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UNIVERSITY OF WISCONSIN-MADISON SPECIFICATION UW-MDN-03-B1-2015GENERAL PURPOSE CLEAN AIR BIOLOGICAL SAFETY CABINET CLASS II, TYPE B1 - 60 PERCENT EXHAUST AIRBUILDING EXHAUSTFour Foot Class II Type B1 – 276 cfm @ -0.73”WC Six Foot Class II Type B1 – 433 cfm @ -0.85” WCSPECIFICATION OUTLINE1.0SCOPE, OBJECTIVE, CLASSIFICATION, INNOVATIVE DESIGN, DEFINITIONS1.1Scope1.2Objective1.2.1Noncompliance1.3Classification1.3.1Sizes1.3.2Style1.4Innovative Design1.5Definitions2.0APPLICABLE DOCUMENTS2.1 Specifications and StandardsInternational Standards National Standards Federal Specifications Federal Standards Military Specifications Military StandardsPerformance Test Methods2.2Other PublicationsAir Moving and Conditioning Association (AMCA) American National Standards Institute, Inc. (ANSI) American Society of Mechanical Engineers (ASME) Illuminating Engineering Society (IES)National Electrical Code (NEC) Underwriters Laboratories (UL)United States Atomic Energy Commission (AEC) Canadian Standards Association (CSA)Institute of Environmental Sciences and Technology (IEST)3.0REQUIREMENTS3.1Bid Submittal Requirements3.1.1Fan and Motor Graphs3.1.1.1Motor Performance Graph(s)3.1.1.2Fan/Motor Performance Graph(s)3.1.2Fabrication Drawings and Performance Envelope3.1.3Submitted Bids3.1.4Selected Supplier3.1.5Field Fan/Motor Performance Test3.1.7Field Specification Compliance Inspection3.2General Description3.2.8Drain Spillage Trough3.2.15Construction and Fabrication Requirements3.2.15.3Dimensional Tolerances3.2.16Fabrication Welding Requirements3.2.17Service Control Center3.2.18Services in Air Passages3.3Dimensions3.3.1Overall Dimensions3.3.2Inner Dimensions of Work Area3.4Assembly3.4.3Cabinet Sash Requirements3.5Materials and Components3.5.2Sheet Metal and Finishes3.5.2.4Carbon Steel Finish3.5.2.4.6Painted Surfaces3.5.2.5Supply Air Grill (SAG) and Air Curtain3.5.2.7Exhaust Transition and Airflow Monitor3.5.2.7.3Airflow Monitor and Interlock3.5.3Glass3.5.4Filters3.5.5Gaskets, Seals and Clamps3.5.6Fan(s)3.5.7Electrical Components3.5.7.1Electrical Requirements – General3.5.7.2Main Power3.5.7.3Motor3.5.7.4Motor Controller3.5.7.7Controls3.5.8Pressure Gauges and Cabinet Operator Warning Systems3.5.8.1Airflow Monitoring System3.5.8.2Pressure Gauges3.5.9Leak Tight Damper in Exhaust Transition3.5.10Plumbing3.5.10.1Work Area Trough Drain Pipe Assembly3.5.10.2Aerosol Sampling Port Assembly3.5.10.3Side Wall Hose Cock Assembly3.6Lighting and Germicidal Radiance3.7Airflow3.7.5Uniform Airflow3.8Temperature Rise3.9Noise3.10Vibration3.11Leak Tight Construction3.12Labels3.12.1Restricted Substances Label3.12.2Manufacturer Label3.12.3Decontamination Signage3.12.4Field Certification Plate and Recertification Interval3.12.5NSF-49 Seal3.12.6Initial Field Certification (IFC) Label3.12.7Ground Fault Circuit Interrupter (GFCI) Label3.12.8Sash Location Arrows3.12.9Operator Instruction Label3.13Operations Manual and Service Video3.14Pressure Gauge, Blower Interlock, and Cabinet Operator Warning Systems3.15Parts List and Required Parts Discount3.16Options and Requirements3.17Drawings4.0QUALITY ASSURANCE PROVISIONS4.1Qualifications4.1.1Procedure for Obtaining Qualification4.1.2Prototype Tests4.2Production Quality Control Tests4.2.1Pressure Decay/Soap Bubble Test4.2.2HEPA Filter Leak Test4.2.3Downflow Velocity and Volume 4.2.4Inflow Velocity and Volume 4.2.5Temperature Rise4.2.6Lighting Intensity4.2.7Noise Level4.2.8Vibration4.2.9UV Intensity Test4.2.10Electrical Leakage, Ground Circuit Resistance and Polarity4.2.11Airflow Smoke Pattern Test5.0PREPARATION FOR DELIVERY5.1Packaging5.2Packing5.2.5Building Address and Room Number Requirement6.0NOTES6.1Guarantee6.1.1Extended Limited Warrantee6.2Qualification6.3Inspection and Certification of Cabinet Delivered FOB Site6.3.1Notification of Delivery6.3.1.1Building Address and Room Number - Required6.3.1.2Direct Delivery option to the Laboratory6.3.2Dock Inspection6.3.2.3Extreme Needs Situation on Damaged Goods6.3.3Certification Tests6.3.4 Penalties for Noncompliance6.4Fabrication and Delivery Time6.4.1Inspection and Certification of Cabinet Delivered FOB LaboratoryAPPENDIX AGRAPH 1 Example Motor Performance Graph (Specification 3.1.1.1)APPENDIX AGRAPH 2 Example Fan Motor Performance Graph (Specification 3.1.1.2)APPENDIX BFIGURE 1 Example Dimensions (Taken from Paragraph 3.3)UNIVERSITY OF WISCONSIN-MADISONSPECIFICATION UW-MDN-03-B1-2010GENERAL PURPOSE CLEAN AIR BIOLOGICAL SAFETY CABINETCLASS II, TYPE B1 - 60 PERCENT EXHAUST AIRBUILDING EXHAUSTFour Foot Class II Type B1 - 276 cfm @ -0.73” WCSix Foot Class II Type B1 - 433 cfm @ -0.85”WC1.0SCOPE, OBJECTIVE, CLASSIFICATION, INNOVATIVE DESIGN, DEFINITIONS1.1Scope This specification covers biological safety cabinets, which shall be vented to an external exhaust ventilation system. The cabinet shall be designed with an internal fan/motor system in which 40 percent of the fan airflow is re-circulated within the work-space and 60 percent is exhausted. Integral with the cabinet are high efficiency particulate supply (primary and secondary) and exhaust air filtration systems designed with an efficiency such that only pathogen-free air is supplied to the work space or discharged to an external exhaust system. The primary supply filter system shall have multiple filters small enough for bag- in/out procedure, autoclave procedures within the laboratory and shipping in approved US Department of Transportation containers. Type B1 cabinets are suitable for work with low to moderate risk biological agents and may be used with biological agents treated with minute quantities of toxic chemicals required as an adjunct to microbiological studies. The owner shall provide an exhaust ventilation system design for 276 CFM for the four foot cabinet and 433 CFM for the six foot cabinet. The exhaust system shall be capable of providing 0.43 inches water column with unloaded filters and 0.85 inches water column with loaded filter conditions, at the stated airflows.1.2Objective The objective of this document is to provide University specifications for the procurement of Class II, Type B1 biological safety cabinets. Sixty percent of the contaminated air from the work area of the cabinet shall be exhausted to the outside atmosphere via sealed metal negative pressure plenum and ducts. Such cabinets shall be referred to as Class II, Type B1 in this specification. Additional specifications for certain cabinet features or options are detailed. Suppliers are advised to consult with the University Agent or Purchasing Department to ensure completeness.1.2.1Noncompliance Cabinets which have been selected from the competitive bidding process and delivered to the University shall conform to the specifications and standards cited in this document. In the event that the delivered cabinet does not conform to these requirements, the manufacturer shall be contacted to arrange for rectification of any identified non-compliance problem either in performance and/or construction specification. If the non-compliance problem cannot be resolved in 10 working days following receipt of notice, it will be the responsibility of the manufacturer to bear expense to re-crate and remove the equipment from the University property within the following 10 working day period. Unless prior arrangements are made, at the end of the second 10 day period the University, at its option, may have a commercial moving and storage agency remove the equipment from the campus and store the cabinet at the manufacturer's expense.1.3Classification The Class II, Type B1 safety cabinet(s) covered by the specification shall be of the following sizes:1.3.1Sizes1.3.1.1Four foot cabinet1.3.1.2Six foot cabinet1.3.2Style Console: The Class II, Type B1 safety cabinet(s) covered by the specification shall be specified in a console (floor standing) model. A console model is a unit with the cabinet blower located below the work surface with a specified knee space.1.4Innovative Design It is the intent of this specification to limit the purchase of Class II, Type B1 cabinets to units with a demonstrated record of safety, performance, and maintainability at the time of this writing. The University recognizes that these specifications may limit new technology development in the future and is prepared to review design changes, which would be outside the boundaries of the following specifications as currently written. If a selected supplier chooses to revise a biological safety cabinet during the duration of the contract and the University is convinced that an innovative design is acceptable via impartial testing results, supplier testing results, or engineering review, a written variance to these specifications may be granted and specifications revised. Therefore, a selected supplier contemplating changes in the safety cabinets which will conflict with the specifications as written is invited to submit documentation to the University for Paragraph 1.4, “Innovative Design” consideration. Changes in cabinet design will be reviewed and if an approval is issued, fabrication for those cabinets may be commenced. Until approval is granted, the specifications as written remain enforceable.1.4.1Any conflict with the specifications contained herein during the competitive bidding process, using innovative design(s) shall be identified by the supplier per each subsection of the specification with an explanation as to why the innovative design(s) is justified in terms of better safety, performance, testing, and maintainability. The University may review said changes, but expeditious approval within the bidding process period cannot be guaranteed. Each bidder is encouraged to adhere to the specifications contained herein to be considered for competitive selection.1.4.2The cabinet design shall include ergonomic considerations in the use, maintenance and certification of biological safety cabinets. Those manufacturers that display the greatest level of human engineering mechanics and safety, sound control, vibration control, ease of testing and maintenance and conformance with this specification and conservative economic product shall be considered in the bidding process.1.5Definitions1.5.1NSF, National Sanitation Foundation1.5.2RPM, revolutions per minute1.5.3VAC, voltage - alternating current1.5.4CFM, cubic feet per minute1.5.5WC, water column1.5.6QT, total fan airflow1.5.7R, filter resistance1.5.8ID, inside diameter1.5.9OD, outside diameter1.5.10Failsafe mechanism is a mechanical device which requires operator assistance to place mechanism into service and to disconnect mechanism from service.1.5.11PAO-4, the default aerosol challenge and agent of first choice1.5.11.1DOP, dioctylphthalate, acceptable alternative aerosol challenge, agent of second choice1.5.11.2Mineral Oil, acceptable alternative aerosol challenge, agent of third choice1.5.12AMCA, Air Moving and Conditioning Association1.5.13LFPM, linear feet per minute1.5.13.1SLFPM, Standard linear feet per minute, corrected to 29.92”Hg, 70 degrees F1.5.13.2ALFPM, Actual linear feet per minute, non-standard density1.5.14PEP, Positive Pressure Plenum shall be defined as any plenum which has been designed to be maintained at a pressure greater than a surrounding exterior atmosphere in order to insure the satisfactory operation of the biological safety cabinet.1.5.15NEP, Negative Exterior Plenum shall be defined as any plenum which has been designed to be maintained at a pressure less than a surrounding exterior atmosphere in order to insure the satisfactory operation of the biological safety cabinet.1.5.16NPT, national pipe thread1.5.17Filter velocity, the air velocity measured in the media section of the HEPA filter, in a plane projection parallel with and four inches perpendicular from the media. The perimeter of the plane projection must be offset at least three inches from any filter media obstructions.1.5.18Average down flow velocity, the air velocity associated with cabinets designed with a uniform velocity distribution in the work zone. For cabinets designed with multiple velocity distributions in the work zone, average down flow velocity is the velocity in the work zone determined during validation used to produce the required performance envelope.1.5.19HEPA (High Efficiency Particulate Air filter), a throw-away extended-media dry-type filter in a rigid frame having a maximum clean filter pressure drop of 1.0 inch water gauge at a rated airflow. Specific capacity shall be determined by the manufacturer based on the cabinet design. Each filter shall bear a filter label with the designated filter efficiency, airflow, and static pressure drop. The label shall include the factory name and address, filter model and filter serial number.1.5.19.1ULPA (Ultra Low Penetration Air filter) a throw away, extended medium, dry type filter in a rigid frame, having a minimum particle collection efficiency of 99.999% (i.e. a maximum particle penetration of 0.001%) for particles in the range of 0.1 to 0.2 micron when tested in accordance with the methods as outlined in IEST-RP-CC007.1.5.20Supplier, the supplier of the biological safety cabinet. Supplier is the biological safety cabinet contractor. Job site building contractors must provide only UW specification grade biological safety cabinets, alternates will be rejected. Please contact the University Agent for assistance at 608-262-1809.1.5.21Metal double wall Construction: The rear and sidewalls of the work zone are double metal wall with negative air plenums in-between. The inner most wall is contiguous with the work zone and the outer most wall is on the exterior side of the cabinet.1.5.22Closure panel, the barrier between a positive or negative pressure plenum in the cabinet and the ambient environment. Exterior closure panels are referred to as reinforced panels which have been provided with turned edges to increase stiffness and reduce fastener spacing. Interior closure panels are flat panels with very little additional stiffness and generally have welded studs and fasteners in a highly repetitive sequence. Dress panels are cosmetic to cover maintenance areas of the cabinet. These panels are held in position with metal tabs using gravity assist or limited numbers of fasteners.1.5.23HP, horse power1.5.24LASKIN NOZZLE, See NSF Standard No. 491.5.25Performance envelope, the range of airflow velocities (intake versus down flow) within which a biological safety cabinet will pass the NSF-49 microbiological aerosol test for product protection and personnel protection.1.5.26Barometric Pressure, BP; local atmospheric pressure. BP unit as inches mercury1.5.27Port, a re-sealable mechanical penetration into the cabinet interior to provide a service entrance for aerosol and pressure measurement, damper access and decontamination agent introduction.1.5.28University Agent: One designated individual with an engineering degree, formal training in the certification of biological safety cabinets, recommended active Professional Engineering Registration, and recent listing as an Accredited NSF Field Certifier.1.5.28SF – Square feet1.5.29Gel Seal: A flexible seal between the filter frame and the filter-mating surface. Gel seal, also known commercially as “Blue Gel”, is non-flowing, non-hardening, and is applied in either direction vertically. The gel is silicone base and is applied by the filter manufacturer. Gel seal has been evaluated at UW and has demonstrated that the physical properties do not change during the service life of the filter. Silicone base gel is the only acceptable gel for bio-safety cabinet application. Polyurethane base gel is prohibited.2.0APPLICABLE DOCUMENTS2.1Specifications and Standards The following documents, of the issues in effect on the date of the invitation for bids or requests for proposal form a part of this specification to the extent specified herein:International StandardsISO 14644-1 Clean rooms and Associated Controlled EnvironmentsNational StandardsNational Sanitation Standard No. 49, the current edition in effectNational Sanitation Standard – Biosafety Cabinetry LISTING, the latest edition in effectFederal SpecificationsJ-C-145 Cable, Power, Electrical and Wire, Electrical; (Weather Resistant) W-C-00596 Connector, Plug, Electrical: Connector Receptacle, Electrical W-S-00896 Switch, ToggleW-S-893 Switch, Toggle, and Mounting Strap, (Interchangeable) CC-M-636 Motor, Alternating current, (Fractional Horsepower)DD-G-1403 Glass, Plate (Float), Sheet, Figured, and Spandrel (Heat Strengthened and Fully Tempered) QQ-S-698 Steel, Sheet and Strip, Low-carbonQQ-S-766 Steel Plates, Sheets, and Strip-corrosion ResistingTT-C-490 Cleaning Methods and Pretreatment of Ferrous Surfaces for Organic CoatingsTT-C-535 Coating, Epoxy, Two Component for Interior and Exterior Use of Metal, Concrete and MasonryTT-C-001224 Coating System, Epoxy, Glaze for Interior SurfacesTT-C-001227 Coating System, Polyurethane Glaze for Interior Surfaces PPP-B-601 Boxes, Wood, Cleated plywoodPPP-B-621 Boxes, Wood, Nailed and Lock-cornerPPP-B-640 Boxes, Fiberboard, Corrugated, Triple wallPPP-B-650 Crates, Wood, Open and Covered PPP-B-843 Cushioning Material, CellulosePPP-T-60 Tape, Packaging, WaterproofFederal StandardsFederal Standard No. 102, Preservation, Packaging and Packing LevelsFederal Standard No. 123, Marking for Domestic ShipmentMilitary SpecificationsMIL-C-104 Crates, Wood; Lumber and Plywood Sheathed Nailed and BoltedMIL-C-132 Crates, Wood, Open; Maximum Capacity 2,500 poundsMIL-C-3774 Crates, Wood, Open; 12,000 and 16,000 Pound CapacityMIL-F-51079B Filters, Particulate, High Efficiency, Fire Resistant, Biological UseMIL-L-10547 Liners, Case and Sheet Over wrap, Water vapor-proof or Waterproof, FlexibleMIL-P-116 Preservation, Methods ofMIL-R-3065 Rubber, Fabricated Products - Gaskets, Synthetic RubberMIL-S-8802 Sealing Compound, Temperature resistant, Aircraft High AdhesionMilitary StandardsMIL-STD-282 Filter Units, protective clothing, gas mask components, and related productsPerformance Test MethodsISO 14644-1 and 2 – Cleanrooms and Associated Controlled Environments2.2Other PublicationsAir Moving and Conditioning Association (AMCA) AMCA 99-76 Standards HandbookAMCA 210-74 Test Code for Air Moving DevicesAMCA AS-2406-66 Fans, Designation of Direction of Rotation and DischargeAMCA 211-80 Fans, Labeling RequirementsAMCA 401-66 Classifications for Spark Resistant ConstructionAmerican National Standards Institute, Inc. (ANSI) A11.1-120083 Industrial Lighting RP-7N101.1-120082 Efficiency Testing of Air Cleaning Systems Containing Devices for Removal of ParticlesS1.2-1962 (R120081) Method for the Physical Measurement of SoundS1.4-120081 Specification for Sound Level MetersS2.2-1959 (R2011) Methods for the Calibration of Shock and Vibration Pick-upsZ97.1-2009 Performance Specifications and Methods of Test for Safety Glazing Material Used in BuildingsAmerican Society Mechanical Engineers (ASME)AG-1 Code on Nuclear Air and Gas TreatmentIlluminating Engineering Society (IES) IES Lighting HandbookNational Electrical Code (NEC)Electrical Component and Wiring SpecificationNational Electrical Supplier's Association (NEMA)Underwriters Laboratories (UL)UL StandardsUL-817 Cord Sets and Power Supply CordsUL-62 Flexible Cord and Fixture WireUL-586 High Efficiency Particulate Air Filter UnitUL-900 Safety Standards for Air Filter UnitsUL-2701-1 Electrical safety and IntegrityUnited States Atomic Energy Commission (AEC)ORNL-NSIC-65 (1/70) Design, Construction, and Testing of High-Efficiency Air Filtration Systems for Nuclear ApplicationsCanadian Standards Association (CSA)C22.2 No. 151-1979 Laboratory EquipmentCAN/CSA-Z316.3-M87 Biological Containment Cabinets: Installation and Field TestingInstitute of Environmental Sciences and Technology (IEST)IEST-RP-CC-001.5 HEPA and ULPA FiltersIEST-RP-CC007.2 Testing ULPA FiltersIEST-RP-CC-013.3 Calibration Procedures and Guidelines for Select Equipment Used in Testing Cleanrooms and Other Controlled EnvironmentsArticleChemical Safety Levels, A Proposal For Chemical Safety Practices in Microbiological and Biomedical Laboratories, RH Hill, Jr. ,J.A. Gaunce, Pamela Whitehead, Office of Health and Safety, Centers for Disease Control and Prevention.3.0REQUIREMENTS3.1Bid Submittal Requirements The following requirements apply to cabinets bid on an individual basis. For cabinets procured via a purchasing contract, the selected manufacturer need only comply with Sections 3.1.1, 3.1.2 and 3.1.3 for the initial bid; unless the cabinet fan/motor system is changed during the contract period. In this event, revised motor and fan graphs must be resubmitted and approved by the University prior to construction of any modified cabinet as represented in the original contract. Sections 3.1.4, 3.1.5 and 3.1.6 shall apply to all cabinets received by the university.3.1.1Motor and Fan Graphs Detailed motor and fan graphs for each safety cabinet shall be submitted with each bid to the Purchasing Department. The graphs shall include sufficient detail to permit the University to determine if the selected fan/motor combination will comply with requirements in Section 3 of this specification. Sample graphs detailing the recommended format are included in Appendix A, Graphs 1 and 2. ACCEPTABLE ALTERNATIVE: As an alternative to the graphs included in Appendix A, graphs and data tables can be provided in an alternative format given that the graphs/data tables detail the following:1. Motor manufacturer2. Motor model, horse power, and capacitor size3. BSC model in which the motor is to be installed, including appropriate details such as sash height, presence or lack of prefilters, etc.4. Operational airflow data in CFMs associated with required air velocities detailed in Paragraph 3.75. Initial fan static pressure using clean filters and associated motor RPMs and amperage6. Fan static pressure, associated motor RPMs, motor amperage, representative airflows in CFMs, and change in total airflow detailing 50%, 100%, and 200% filter loading.This requirement shall be fulfilled by actual testing of the biological safety cabinet offered for purchase or testing of a prototype model of identical design and filters.3.1.1.1Motor Performance Graph(s) Submitted bid(s) shall contain a motor performance graph selected by the supplier for the equipment to be used in the cabinet(s) proposed under bid. Each graph shall list the motor manufacturer, model number, horsepower and capacitor size. The ordinate of each graph shall contain units for motor RPM. The abscissa of each graph shall contain units for torque, voltage and amperes with applicable multipliers. At least three curves shall appear on the graph:1. Motor torque versus RPM.2. Motor voltage versus RPM.3. Motor amperes versus RPM.3.1.1.2Fan/Motor Performance Graph(s) Submitted bid(s) shall contain fan/motor performance graph(s) for the equipment selected by the manufacturer to be used in the cabinet(s) proposed under bid. Each graph shall detail the fan manufacturer, fan model number, motor manufacturer and motor model number. The ordinate of each graph shall contain units for static pressure in inches water gauge. The abscissa of each graph shall contain units for cubic feet per minute of air at standard conditions (70 degrees Fahrenheit, sea level datum). The following elements shall appear on each graph:3.1.1.2.1A series of constant fan wheel speed curves in RPMs.3.1.1.2.2A series of constant fan wheel torque curves in ounce feet.3.1.1.2.3A discrete motor/fan torque curve with the motor speed control at full line voltage - 115 VAC. The curve points shall be obtained from the motor performance graph.3.1.1.2.4The fan design curve shall be such that the loaded and unloaded system resistance curves intersect the fan characteristic curve in the negative sloped portion of the fan curve. A fan/motor designed to operate at the specified airflows on either the broad or flat portion of the fan curve – i.e. positive slope – may be rejected depending on how the performance characteristics of the exhaust and supply air velocities are affected when the filters have been loaded in accordance with specification 3.1.1.2.5.5.3.1.1.2.5A discrete fan/motor torque curve with the motor speed control adjusted to the operational airflow in CFMs associated with required air velocities detailed under Paragraph 3.7. The curve points for reduced voltage operation may be approximated from the following formula: torque 1/torque 2 = (voltage 1/voltage 2)2 or with actual motor performance data. The supplier shall indicate on the fan/motor performance graph how the curve points for reduced voltage operation have been derived and submit motor performance data for reduced voltage operation if used as curve points.3.1.1.2.5.1The curve generated under Paragraph 3.1.1.2.5 shall detail a representative initial fan static pressure and airflow using clean filters and a representative operational motor voltage.3.1.1.2.5.2The curve generated under Paragraph 3.1.1.2.5 shall detail the fan static pressure associated with a 200 percent increase in filter static pressure. Two hundred percent increase in filter static pressure shall be determined by multiplying the clean supply filter static pressure by 3.0. The 200 percent increase in filter static pressure for multiple supply filters in series (primary = upstream of fan and secondary = downstream of fan) shall only be based on the static pressure drop across that of the primary supply filter(s).3.1.1.2.5.3The curve generated under Paragraph 3.1.1.2.5 shall detail the fan airflow rate associated with a 10 percent drop in operational total airflow rate in CFM.3.1.1.2.5.4The manufacturer shall detail on the fan/motor performance graph a representative initial clean filter pressure drop at the total fan airflow associated with average down flow and face velocities required under Paragraph 3.7. For primary and secondary supply filters in series, the initial filter pressure drop is based on the primary filter(s) only. This requirement shall be fulfilled by actual testing of the biological safety cabinet offered for purchase or testing of a prototype biological safety cabinet with clean HEPA filter(s) with resistance and flow characteristics which are within ±5 percent of those HEPA filter(s) offered in the production biological safety cabinet. The total airflow in CFM, the motor speed in RPM and filter static pressure in inches W.C. at this set point shall be stated. This detail shall appear on the fan/motor performance graph using the following format:Clean Filter(s) with Cabinet Air Velocities at Factory Set PointQT CFM, Motor Speed RPMs, Filter R "W.C.3.1.1.2.5.5With the upstream supply filter(s) evenly loaded to produce a 10 percent reduction in the clean filter total airflow delivery detailed in Paragraph 3.1.1.2.5.4, the manufacturer shall detail the resultant airflow in CFM, motor speed in RPMs and filter static pressure in inches W.C. This requirement shall be fulfilled by actual testing of the biological safety cabinet offered for purchase or testing of a prototype model of identical design and filter(s). The test results shall appear on the fan/motor performance graph using the following format:Loaded Filter(s) with 10 percent Reduction in Total AirflowQT = CFM, Motor Speed RPMs, Filter R “W.C.3.1.1.2.5.6The 200 percent increase in filter pressure drop across the primary HEPA filter(s) shall be based on filter(s) having at least the following airflow and pressure drop characteristics:5.875 deep filter: 180 CFM/SF media at 1.0 inch pressure drop.11.500 deep filter: 330 CFM/SF media at 1.0 inch pressure drop.If the manufacturer elects to use filters with higher rated airflow characteristics at the same pressure drop, allowance for high rated airflow filters will be permitted in assessing compliance with Paragraph 3.1.1.3.1.2Fabrication Drawings and Performance Envelope Graph3.1.2.1Fabrication Drawings One set of detailed fabrication drawings shall be submitted with each bid to the University Purchasing Department. Drawings shall include sufficient detail to permit the University of Wisconsin to determine if all physical construction, mechanical, electrical and dimensional requirements in Section 3 have been included in the fabrication plans. Sample figures with dimensional requirements are included in Appendix B, Figure 1.3.1.2.2Performance Envelope Graph The submitted bid shall contain one performance envelope graph detailing the cabinet's ability to effectively handle biological aerosols under multiple velocity conditions. The graph data shall provide a statistical performance envelope graph plotting intake air velocity in feet per minute on the ordinate of the graph and supply air velocity in feet per minute on the abscissa.3.1.2.2.1At least 20 data points shall be displayed on this graph.3.1.2.2.2The vendor's model number shall be displayed on this graph.3.1.2.2.3The graph shall show passing results of the NSF-49 Personnel Protection test at set point and at cabinet airflow velocities -15 fpm (±3 fpm) inflow and +15 fpm (±3 fpm) down flow from set point. The graph shall also show points where the cabinet fails.3.1.2.2.4The graph shall show passing results of the NSF-49 Product Protection test at set point and at cabinet airflow velocities +15 fpm (±3 fpm) inflow and -15 fpm (±3 fpm) down flow from set point. The graph shall also show points where the cabinet fails.3.1.2.2.5The graph shall detail the cabinet set point velocity defined as the midpoint velocity for intake and the midpoint velocity for down flow. The NSF-49 velocity ranges for down flow and intake shall also be labeled on the graph. For zone downflow biological safety cabinets, submit average row velocities.3.1.2.2.6A statistical average and upper and lower ninety-five percent confidence limits shall be displayed on the graph.3.1.2.2.7The data shall be reviewed by the University to ensure that the biological safety cabinet under bid can safely perform under an array of air velocity conditions.3.1.2.2.8Failure to submit performance envelope data as called for in paragraph 3.1.2 shall result in bid rejection.3.1.3Submitted Bids Submitted bids will be reviewed within 60 days of receipt and the successful bidder notified accordingly by the University.3.1.3.1Any bid, which does not comply with the specifications and performance standards contained herein shall be rejected. This shall include the requirement for primary and secondary supply HEPA filtration.3.1.3.2Any bid which does not format requested data within the requirements of Paragraph 3.1 shall be rejected.3.1.3.3Any bid containing proposed fan/motor system sized and rated such that the operational air delivery required under Paragraph 3.5.6.3 cannot be obtained shall be rejected.3.1.3.4Any bid containing cabinet exhaust filters requiring a clean filter pressure drop in excess of 0.5 inches WC for an average cabinet face velocity of 105 LFPM (±5 LFPM) shall be rejected. 3.1.3.5Any bid which fails to provide detailed fabrication drawings as required in paragraph 3.1.2 shall be rejected.3.1.4Selected Supplier The vendor selected to construct a biological safety cabinet shall submit one set of detailed final fabrication drawings to the University. The drawings shall include sufficient detail to permit the University to determine if all physical construction, mechanical, electrical and dimensional requirements in Section 3 have been included in the fabrication plans. Electronic drawing submittal shall be the preferred method for submission to comply with this requirement.3.1.4.1Any optional equipment specified by the University for bidding shall be detailed on the final fabrication drawings.3.1.4.2The selected vendor shall commence cabinet fabrication after receiving approval to proceed from UW Environment, Health, and Safety – Engineering Technical Services. 3.1.4.3Once approval for final fabrication drawings has been given, the University shall permit no variance in the construction without prior approval. Contact the University Agent for questions regarding variance.3.1.5Field Fan/Motor Performance Test. The cabinet(s) selected for purchase may be subjected to a field fan/motor performance test during performance testing of the cabinet. If this test demonstrates a failure of the internal fan/motor system to comply with the operational air delivery required under Paragraph 3.5.6.3, the supplier shall be contacted to arrange for replacement of the cabinet or purchase cancellation. Those cabinets returned to the supplier shall be at the supplier's expense (FOB BSC field location). Arrangements and costs for packaging of the cabinet for shipment will be the responsibility of the supplier.3.1.6Field Internal Plenum Pressure Test The cabinet(s) selected for purchase may be subjected to a field internal positive pressure plenum test in addition to other performance testing of the cabinet. If this test demonstrates a failure of the plenum to comply with the allowable leakage rate required under Paragraph 3.5.6.6, the cabinet manufacturer shall be contacted in order to arrange for repair, replacement, or cancellation.3.1.7Field Specification Compliance Inspection. The cabinet(s) selected for purchase may be subjected to a field compliance inspection to determine whether the manufacturer has complied with the construction specifications contained herein. The cabinet may be completely dismantled and any conflicts with the construction brought to the attention of the manufacturer, as detailed in Paragraph 1.2.13.2General Description3.2.1Console: The cabinet shall be a console unit (floor standing), fabricated with materials of construction as required and contain all items of equipment as necessary to be functional and to operate fully within the intent of this document. The cabinet shall be constructed with the strength and rigidity to meet noise and vibration levels specified in Paragraphs 3.9 and 3.10. The liner shall be one piece construction for the rear and sidewalls using 16 gauge stainless steel, integral radius rear corners with non-glare satin number 4 metal finishes to diminish reflection and integral exhaust slots above the sash and at the operator entrance to the work zone. A 16 gauge stainless steel work surface with rounded corners for cleaning and attached integral front intake grill shall be provided along with a recessed work trough for liquid spills. The work tray, if removable shall have stainless finger lifts. There shall be two internal sealed metal ducts, one for the internal supply air and one for the work zone exhaust air.3.2.1.1One Cable Port Required: For those safety cabinets sold with a sliding sash, the right wall shall be provided with a closeable and cleanable port to allow external wiring and tubing to pass into and out of the safety cabinet work zone without having to enter under the sliding sash. A second cable port on the left sidewall maybe specified as an option.3.2.1.2Metal double wall construction: The cabinet liner shall be surrounded by metal double wall construction on the rear and left and right work zone sidewalls. The inner section of the metal double wall shall serve as a negative air plenum and service area for plumbing and electrical services. Single wall construction is prohibited in these areas.3.2.2The cabinet, when connected to an external source of electrical power and external exhaust system, shall be completely independent of all other sources for successful operation and performance. The owner shall provide an exhaust ventilation system design for 276 cfm for the four-foot cabinet and 433 cfm for the six- foot cabinet. The exhaust system shall be capable of providing 0.43 inches water column with unloaded filters and 0.85 inches water column with loaded filter conditions.3.2.3The working face of the unit shall be a sloped panel of safety plate glass which has been metal clad on all four sides, a sliding sash assembly with a work access opening below it. The sash shall have two stainless grip handles. The sash shall be slanted 10 degrees ±2 degrees to reduce eye strain and the rear wall shall be straight. All metal slides shall be protected from metal to metal contact with Teflon strips applied on all contact surfaces.3.2.4The cabinet shall have a partially enclosed work space which is supplied with HEPA filtered air with a front air curtain moving in a unidirectional, vertical downward manner.3.2.5The work area shall consist of the following items arranged from front to back: The arm rest/airfoil, the work access opening (Paragraph 3.2.3), the perforated stainless steel sheet area (Paragraph 3.2.6), with solid one piece stainless steel work surface. There shall be a metal exhaust air plenum located in the rear wall of the work area (Paragraph 3.2.7). The free open portion of the front perforated area shall comply with Paragraph 3.7.4 to permit the supply air to pass through, with a minimum amount of turbulence, into the filter plenum, which is connected to the suction side of the fan. The top lip of the airfoil shall be one inch above the fixed solid stainless steel work surface. The work surface shall be the full length of the work space from wall to wall, extending from the front perforated area to the back wall of the work space. The surface shall be flat and level. The flatness shall be parallel to the plane of the base of the cabinet, ±0.0625 inch offset per 60 lineal inches at all points.3.2.5.1The airfoil should consist of a stainless steel airfoil jamb.3.2.6A perforated stainless steel sheet area shall be incorporated into the solid work surface in the work area. The perforated sheet shall be 16 gauge.3.2.6.1Bypass armrest with pad: An ergonomic stainless steel armrest with pad shall be provided. The armrest shall be cleanable and resist the routine decontamination agents such as alcohol and 5 percent hypochlorite.3.2.7Air shall leave the work-space via the perforated area in front of the work surface and via a metal exhaust air plenum extending the full length of the work space in the lower rear wall or rear work surface. The air removed from the perforated area in front of the work surface shall be drawn through a primary HEPA filtration system located upstream of the fan(s), return air plenum(s), a secondary HEPA filtration system located above the work zone and stainless steel supply air grill. The grill shall be attached with welded sidewall stainless studs and prevented from falling during cleaning. Method of grill attachment shall be designed for ease of use by maintenance personnel using nitrile gloves. The air removed via the front and rear areas shall comply with Paragraph 3.7.4. The work zone shall be ISO Class 4.3.2.7.1The exhaust air plenum shall contain a lower exhaust slot(s).3.2.7.2The lower exhaust slot(s) shall extend across the entire work surface.3.2.7.3The lower exhaust entrance should be provided with a stainless steel, cleanable, removable barrier to prevent the access of laboratory research materials into the exhaust air plenum. The free open area of the barrier shall be at least 80 percent.3.2.8Drain Spillage Trough: A stainless steel drain spillage trough shall be located below the work surface and arranged to catch any spillage dropped from the work surface. The outer perimeter dimensions of the trough shall be at least the same perimeter dimensions of the work tray and front perforated area combined. With the one piece perforated /solid dished work surface removed along with the removable work surface supports, all areas of the trough shall be accessible for cleaning and filter maintenance. The drain spillage trough shall have at least 0.125 inch radius corners. The drain spillage trough shall accommodate a minimum of (4) four liters, be liquid tight, and be provided with a front access drain valve (3.5.11.1).3.2.9The cabinet shall be equipped with electrical services and plumbing as specified in 3.5.8 and 3.5.11.3.2.10The exhaust filter plenum assembly shall be removable. The plenum assembly shall be attached to the cabinet frame with construction according to Paragraphs 3.2.16 and 3.5.5.3.3.2.10.1The exhaust filter plenum shall contain a removable front access, reinforced panel which will attach to the exhaust filter plenum assembly according to Paragraphs 3.2.16 and 3.5.5.3.3.2.10.2With the exhaust filter in place, the exhaust filter plenum assembly shall allow for a minimum clear space of at least 4.0 inches between the downstream filter face and upper interior side of the exhaust filter plenum assembly panel. The filter face shall be defined as the downstream upper edge of the filter face. Cabinet exhaust HEPA filters with obstructed downstream faces shall not be acceptable.3.2.10.3When inserting a replacement exhaust filter through the vertical access plane into the plenum, side and vertical clearance shall be provided to facilitate filter change. A minimum of 0.25 inches lateral clearance between the filter outside width and the filter access opening shall be provided. A minimum 4.0 inch vertical clearance shall be provided between the filter exterior height and the vertical access opening to the plenum. Alternate methods for changing the exhaust filter will be considered, however the University Agent shall make the final determination as to any exception in this paragraph.3.2.10.4The exhaust filter face must be completely accessible. Clamp assemblies which protrude across the filter face shall not be allowed.3.2.10.5The exhaust filter shall be provided with a compression assembly designed to apply at least 50-percent gasket compression and prohibit any aerosol from bypassing around the filter.3.2.10.5.1Exhaust filter clamps shall be easily accessible using standard hand tools.3.2.10.5.2The biological safety cabinet manufacturer shall have a standard operating procedure, SOP, for repairing a gasket or filter media leak in the exhaust filter assembly in the event that the exhaust filter fails the probe test. The manufacturer shall state how the exhaust filter can be repaired using the NSF-49 filter leak test, once the filter access door has been removed. If a special auxiliary blower is required, the bio-safety cabinet manufacturer shall offer the blower assembly for sale or offer a detailed drawing with parts schedule so that an auxiliary blower can be purchased locally and assembled.3.2.10.6The mating surface which forms the bearing surface between the exhaust filter gasket and exhaust filter plenum assembly shall be free of pitting and welding debris. The surface itself shall be flat within a 0.0625 inch maximum offset over 70 inches.3.2.10.7The exhaust filter shall be sized for a maximum clean filter pressure drop of 0.43 inch water column at the specified face velocity and exhaust airflow (Paragraph 3.7).3.2.11Top, front or side dress and reinforced panels shall be provided for access to sash balance mechanism, utility plumbing lines and electrical components.3.2.11.1Dress panels shall allow access into non-contaminated areas of the cabinet structure to perform routine mechanical, electrical or plumbing service, which is ancillary to the cabinet fan, filters and air passages.3.2.11.2Fasteners for attaching reinforced service panels shall be 1/4-20 hex head zinc plated steel screw and flat seal washer. The seal washer shall have a rubber interior seal designed to pass the NSF-49 cabinet leak test. Standard flat panel construction, if used in air passages, shall be welded stud construction using stainless studs and fasteners at 3.5 inch centers.3.2.11.2.1Reinforced service panel screws shall not contact any filter surfaces.3.2.11.2.2Each reinforced service panel shall be provided with a neoprene gasket between the panel and cabinet frame.3.2.11.3Each reinforced panel shall be designed to allow unrestricted access to those areas of the cabinet requiring mechanical, electrical or plumbing service. Unrestricted access is defined as access, which allows service to the sash balance mechanism, utility plumbing lines and electrical components either through the front, sides or top of the cabinet. No service panels that must be removed for service of electrical or plumbing are allowed on the rear exterior wall of the cabinet. This will result in a 1.2.1 notice.3.2.11.4Access to the cabinet shall be front access, without the need to remove any other service access panel(s). A variable frequency drive (VFD) may be mounted on the interior side of the cabinet electrical service control assembly, provided that the switches/adjustment knobs are readily accessible.3.2.11.5The fluorescent lamp assembly shall be located on the front exterior side of the work zone. This construction will allow electrical disconnection of the lamp without having to remove the entire lamp assembly.3.2.12Reinforced panels shall be provided to allow front access to the supply (primary and secondary) filters and exhaust filters and front access to the fan/motor(s), plumbing. Each front access closure plate shall be sized to allow front removal of the supply (primary and secondary) and exhaust filters and front removal of the motor/fan assembly. Each closure plate shall have a gasket as detailed in Paragraph 3.5.5.3 and shall conform to leak tight construction as detailed in Paragraph 3.11. The reinforced plates shall be constructed with finished turned edges to increase rigidity for sealing.3.2.12.1The primary supply filters upstream and downstream faces shall be accessible for repair of filter leaks. The upstream face(s) shall be accessible by either removing the cabinet work tray or if the work zone is integral to the liner, there shall be a 4-inch clearance between the work zone and upstream filter face.3.2.12.2For integral non-removable work zones, when replacing the primary supply filter(s) through a front access panel, a minimum horizontal clearance of 0.25 inches and vertical clearance of 2.0 inches between any frame member of the cabinet and the outside vertical and horizontal dimension of the filter frame shall be provided. When the filter is in place, a minimum vertical clear space of 4.0 inches between the filter media and cabinet frame shall be maintained. When replacing a primary supply filter with a removable work zone tray, a minimum lateral clearance of 0.25 inches front to back and side to side with any cabinet member shall be maintained to facilitate certifier safety in removing filters.3.2.12.3The downstream side of the primary supply filter face shall be accessible for repair by removing the cabinet blower access panel. The secondary supply filter face shall be completely accessible. Clamp assemblies that protrude across either filter face are prohibited. The secondary supply filter downstream face shall be completely accessible once the protective stainless steel supply air grill is removed. The bio-safety cabinet manufacturer shall develop a written standard operating protocol, SOP, for repairing the primary supply filter(s). If an auxiliary blower assembly is required, the bio-safety cabinet manufacturer shall offer for purchase the auxiliary blower assembly or offer an alternate drawing detailing the blower motor assembly and parts to attach the blower to the cabinet. Blower parts should be available from local suppliers.3.2.12.4The primary and secondary supply filter(s) shall be provided with clamping assembly designed to distribute a uniform load per lineal inch of filter gasket and effect at least a 50 percent gasket compression with no aerosol leaks per NSF-49. Option: A gel seal or putty seal system is acceptable for the primary supply filter(s), as long as there are no aerosol leaks per NSF-49.3.2.12.5The mating surface which forms the bearing surface between the primary and secondary supply filter gaskets and plenum assemblies shall be free of pitting and welding debris. The surface itself shall be flat within a 0.0625 inch maximum offset over 70 inches.3.2.12.6All containment access panels to the filters and fan/motor(s) shall be designed so that each plate can be removed from the cabinet without obstruction from adjacent closure plates and associated fasteners.3.2.13Ports: The cabinet shall be equipped with ports for insertion or sampling of aerosol. The port construction shall conform to leak tight construction as detailed in Paragraph 3.11. The ports shall allow access to the upstream plenum of the supply (primary and secondary) and exhaust HEPA filters. The primary supply and exhaust plenum ports shall contain a warning label requiring decontamination prior to removal of the plug.3.2.13.1Each supply port shall be located on the exterior front or top of the cabinet.3.2.13.2The exhaust port shall be located either in the cabinet work zone below the supply grill or the exterior top of the cabinet. The exhaust port, if installed below the supply grill, shall not interfere with the removal of the supply grill.3.2.14Each biological safety cabinet shall be provided with a high-integrity (zero leakage) shutoff damper in order to completely isolate the cabinet from the building exhaust ventilation system. This is not an option.3.2.14.1The damper diameter shall be 12 inches ±0.125 inches.3.2.15Construction and Fabrication Requirements3.2.15.1The cabinet shall be constructed with the strength and rigidity to meet noise and vibration levels specified in Paragraphs 3.9 and 3.10. The liner shall be one piece construction for the rear and sidewalls using 16 gauge stainless steel, with metal double wall construction, integral radius rear corners with non-glare satin number 4 metal finish to diminish reflection and integral exhaust slots above the sash and at the operator entrance to the work zone. A 16 gauge stainless steel work surface with rounded corners for cleaning and attached integral front intake grill shall be provided along with a recessed work trough for liquid spills. The internal metal ducts shall be 16 gauge steel, external reinforced panels shall be 16 gauge steel. Dress panels shall be 18 gauge steel. Option: The supplier shall offer an all stainless steel construction if called for in the purchase request.3.2.15.2The cabinet shall be constructed in a manner making it easy to clean. Cracks or crevices, which provide reservoirs for access of contamination, shall not be accepted. The two rear vertical and two lateral horizontal corners in the work zone shall have radii corners with a minimum radius of 0.4375 inches.3.2.15.2.1All interior nuts, bolts, machine screws, stud screws, stud bolts, etc., shall be stainless steel. Exterior screws used to seal the reinforced panels should be stainless steel with zinc-plated screws as the alternate. All fasteners associated with the stainless steel liner shall be stainless steel and smooth. Fasteners in the work zone shall be glove tear resistant. This shall include fasteners for the window sash assembly. If welded stud bolt construction is used, spacing should be no more than 3.5 inches center-to-center. The method for assembling the multi-section cabinets together shall be by use of sealable o-ring bolts or by use of electric welded stainless steel studs. The holes in the service panels and closure plates and sections of the cabinet shall be sized to prevent panel hole from contacting the screw fasteners during assembly of the panel or assembly. The removable rigid panels used in the contaminated zones shall be designed with integral ? - ? inch ninety degree turned lips which have been formed and welded at the corners and the metal deburred, polished, painted, and gasketed. The holes in the service panels, reinforced panels and separable sections of the cabinet shall be at least 10 percent larger in diameter than the stud diameters. All exterior panels and fasteners shall be fabricated to facilitate required leak tight construction and be easily removed without need of extraordinary measures because of misaligned holes and studs. Misaligned stud/hole construction is poor workmanship and will result in either a 1.2.1 notification or corrective repairs as covered in paragraph 6.3.4. Internal metal ducts shall have smooth welded joints, bolts and gasket construction.3.2.15.2.2The Class II, Type B1 cabinets shall have adjustable gliders installed in the base of the cabinet. The gliders shall be heavy enough to support the weight of the cabinet during shipment, moving and set-up at the use point. The gliders shall have at least 1/2 inch threaded shafts with stainless steel bottom on glider with nylon cap.3.2.15.2.2.1Glider construction shall be stainless steel, adjustable height and the glider foot shall be rounded to reduce floor tile damage on movement. Glider feet with sharp corners at the floor contact point that damage the floor will result in a 1.2.1 notification and the supplier required to replace the parts. The supplier must pay close attention to glider construction since many floors in bio-containment facilities are now being provided with soft floor coverings. Gliders shall be designed to provide a work zone height of 32 inches (-1, +3). An optional glider shall be available to allow a work zone height of 35 inches ±2 inches.3.2.15.3Dimensional Tolerances3.2.15.3.1Linear dimensions shall be within ±0.0625 inches of the specified dimension.3.2.15.3.2The square ness of the cabinet shall have the overall outside and inside surfaces perpendicular within the following limits: the maximum offset from 90 degrees shall be 0.0625 inches or 0.03125 in/ft, whichever is greater.3.2.15.3.3The flatness of the outside surfaces which can be mated to other equipment and/or furniture shall be flat within a 0.125 inch maximum offset over 96 inches.3.2.16Fabrication Welding Requirements3.2.16.1Prior to welding, work shall be degreased, buffed, and brushed as necessary to remove all dirt, scale corrosion, dust, grease, oil, water or other foreign material. All buffing shall be done with a stainless steel brush. In no case shall a carbon steel brush be used.3.2.16.2Weld surfaces as deposited shall be smooth and uniform in appearance without abrupt changes in contour.3.2.16.3Weld metal and base metal shall be free of excessive splatter due to too high a welding current, too large an electrode, wrong electrode angle, etc., when using the base metal consumable electrode with inert gas shielding for the welding method.3.2.16.4Weld surfaces, root or face, shall not show oxidation. Oxidation, as here defined, shall mean granulation (sugary) or scaling of the metal that cannot be removed or restored to a bright metal surface by wire brushing. Heat discoloration or blackening by flux residue is not considered oxidation.3.2.16.5A crevice on any weld surface in any weld joining (other than between "skip" welds on lap joints) is not acceptable. (A crevice is defined as a space or depression which will retain liquid by capillary attraction, generally having a depth greater than its smallest surface dimension.)3.2.16.6Arc burns on the base material are not acceptable. (Arc burns are defined as scars left where the welding arc has been struck on or dragged across the base metal surface.)3.2.16.7Welds shall be entirely free of evidence of lack of fusion or cold lap, pinholes, cracks and weld craters, and shall be free of porosity, slag inclusion, and other imperfections as, in the opinion of the University, is obtainable by exercise of the high skills of the art.3.2.16.8Suck-back on the root face of welds made from one side only shall not exceed five percent of the base metal thickness. Suck-back, as here defined, shall mean a minor depression in the center of the weld-metal surface, as measured from the base metal surface, caused by metal solidification, shrinkage and/or action of gravitational forces on the molten metal.3.2.16.9All welds welded from one side only (except lap joints) shall have 100 percent penetration with melt-through. For butt joints, the weld metal on the front surface shall in no place be lower than the adjacent base metal surfaces; for butt, corner and tee joints, the weld metal on the back side shall in no place show a depression lower than the adjacent base metal thickness. Weld metal protrusion on the back side of welds made from one side shall not exceed 20 percent of the adjacent base metal thickness or 0.09375 inches, whichever is less. Joints detailed to be welded from one side only may, at the option of the supplier, be welded from both sides to obtain 100 percent penetration, provided that no excessive warpage in the sections being joined is caused thereby. All tolerance requirements shall be met as previously mentioned in Paragraphs 3.2.15.3, 3.2.15.3.1, 3.2.15.3.2, and 3.2.15.3.3.3.2.16.10All welds shall develop the full strength of the lighter of the sections being joined, except where only a "tack" or "seal" weld are required.3.2.16.11All interior work area welds shall be finished flush with adjacent surfaces and shall be no rougher than adjacent surfaces. Exterior weld area shall be ground smooth and flush with adjacent surfaces where necessary to provide gasket seating surfaces. Finishes made for this or other reasons shall be no rougher than the finish on adjacent surfaces. All interior air plenum welds shall be finished smooth to within plus or minus 0.01 inches.3.2.16.12The method of choice for permanent joints in the sheet metal comprising the boundaries of the air passages will be continuous welds. Permanent joints in the sheet metal comprising the boundaries of the air passages made by tack welding and sealant bonding are optional provided that the permanent joints can conform to leak tight construction, Paragraph 3.11.3.2.16.13Only the following two methods may be used for welding of stainless steel. The method chosen shall take into account all other requirements of this Specification.3.2.16.13.1Tungsten non-consumable electrode with inert gas shielding, using direct current and straight polarity (work positive). This method is commonly known as "TIG" or "HELIARC."3.2.16.13.2Base metal consumable electrode with inert gas shielding, using direct current and straight polarity (work positive). This method is commonly known as "MIG" or, when straight polarity is used, "SIGMA."3.2.17Service Control Center3.2.17.1All electrical components that service the motor, lamps, and outlets shall be located in a removable, uncontaminated electrical compartment. Accessories, such as lamp ballasts, fluorescent lamps, pressure gauges, switches, relays, motor controller(s), warning alarms, motor capacitor(s), etc., shall be housed in a service control center located on the front of the cabinet. The service control center shall be in a separate, ventilated compartment, which is attached to the main structure of the cabinet. On all units, the service control center connections to the cabinet interior shall be fitted with male/female plugs for disconnection, without having to enter a contaminated area, to facilitate moving and servicing of the cabinet. The service control center shall be front access with no less than two stainless steel fasteners as the attachment unit. All of the penetrations into the cabinet air plenum systems from the control center shall meet the leak tight construction requirements, Paragraph 3.11. The service control center shall be electrically and mechanically demountable to allow for rapid cabinet servicing.3.2.17.2One electric power cord shall originate from the service control center and be secured with at least one fastener on the top assembly panel using a C-clip. The power cord shall be 14 feet in length and be equipped with a hospital grade plug.3.2.17.3The service control center shall have a variable frequency drive, which is clearly marked and accessible. Switches/adjustment knobs shall be readily accessible without the need to remove other assemblies.3.2.17.4The fluorescent lamp shall be front accessible without the need to remove any contaminated access panels to change the bulb(s).3.2.17.5PC board low voltage shall be provided with touch pad controls for the fluorescent, blower, UV, and receptacle. Rocker switches are prohibited. The PC board shall have pilot lamp display on all touch pad low voltage switches and LED lamps on the PC board to trouble shoot the board itself for the fluorescent, blower, UV, and receptacle. There shall be a plug in diagram next to the PC board detailing the wiring harness plug in areas on the board. The board shall be attached using welded studs or tack on plastic stays.3.2.17.6Touch pad switches shall be raised to facilitate user ergonomics. Touch pad switches shall operate smoothly and require less than 0.5 pound force to activate or deactivate the fluorescent lamp, blower, UV, or receptacle. Touch pad switches shall be easily cleaned and not be affected by decontamination chemical agents commonly used in biological research.3.2.17.7The service control center wiring shall be organized systematically using terminal blocks and insulated wiring terminals. All loose wiring shall be secured using plastic ties. All removable electrical components shall be mechanically attached. Solder connections are prohibited on removable components.3.2.18Services in Air Passages3.2.18.1Wires, tubing, cables, conduits, pipes, etc., shall not be located or routed within the air passages of the cabinet with the exception of fan electrical connections, tubing associated with aerosol test ports, and any tubing necessary for airflow and/or pressure measurement.3.2.18.2Exception construction must have gas tight connectors installed between the interior and exterior sections of the cabinet.3.2.18.3Exception construction shall only be routed in plenums. Routing in sections of the air passages with design air velocities in excess of 1000 LFPM shall not be allowed.3.2.18.4Exception construction shall be via a single power cord to insulated spade connectors per motor. The connection shall be located no more than one foot from each fan/motor assembly. The wiring from the spade connectors to the fan motor shall be insulated cable or individual shielded wires sealed in an insulated tube.3.2.19Options and Requirements3.2.19.1Required: Bypass armrest with pad3.2.19.2Option: Adjustable Foot Rest3.2.19.3Option: Direct Delivery to the laboratory3.2.19.4Option: Reinforced work surface3.2.19.5Required: sidewall cable port on right sidewall3.2.19.6Option: All stainless steel construction3.2.19.7Required: Leak tight damper – Paragraph 3.5.103.2.19.8Option: UV lamp at rear wall – Paragraph 3.6.43.3Dimensions3.3.1Overall dimensions shall include all protrusions through and/or from the outside walls of the cabinet such as pipe nipples, side door assemblies, electrical connection boxes, cabinet seams, etc. Sample figures with dimension requirements are included in Appendix B. All cabinets shall have a knee space of 12 inches ±1 inch.3.3.1.1Four foot console cabinet3.3.1.1.1Overall Length 54 inches (±1”)3.3.1.1.2Overall Depth 34 inches (±1”)3.3.1.1.3Overall Height without exhaust housing 76 inches (-1”, +3”)3.3.1.1.4Overall Height with exhaust housing 94 inches (-1”, +3”)3.3.1.1.5Operator Knee Space 12 inches (±1”)3.3.1.2Six foot console cabinet3.3.1.2.1Overall Length 78 inches (±1”)3.3.1.2.2Overall Depth 34 inches (±1”)3.3.1.2.3Overall Height without exhaust housing 76 inches (-1”, +3”)3.3.1.2.4Overall Height with exhaust housing 94 inches (-1”, +3”)3.3.1.2.5Operator Knee Space 12 inches (±1”)3.3.2Inner Dimensions of Work Area3.3.2.1Four foot console cabinet3.3.2.1.1Length, inside wall to inside wall shall be 46 inches (±1”)3.3.2.1.2Depth, window to rear wall 24 inches (±1”)3.3.2.1.3Height, work surface to supply air grille (SAG) 26 inches (±1”)3.3.2.1.4Height, floor elevation to work surface 32 inches (-1”, +3”); Optional 35 inches (±2”)3.3.2.2Six foot console cabinet3.3.2.2.1Length, inside wall to inside wall 70 inches (±1”)3.3.2.2.2Depth, window to rear wall 24 inches (±1”)3.3.2.2.3Height, work surface to SAG 26 inches (±1”)3.3.2.2.4Height, floor elevation to work surface 32 inches (-1”, +3”); Optional 35 inches (±2”)3.4Assembly3.4.1Door Way Requirement: The cabinet shall be capable of being moved through a doorway nominally 6'7" high, 2'11" wide using only equipment commonly available for furniture moving such as jacks and dollies, and it shall not be turned over on end. Cabinets assembled from upper and lower sections connected by joints with gaskets shall be acceptable.3.4.2Bolted Cabinet Sections: The upper and lower sections of two or more section cabinets shall be bolted together to form a structural unit. Screw connection is prohibited.3.4.3Cabinet Sash Requirements: The sash shall consist of 0.25 inch thick safety glass mounted in 24 gauge, type 304 stainless steel channels, 0.4375 inches (maximum) wide, which shall have all corners smooth to provide a protected frame with no exposed glass edges. This will provide protection from the loading and unloading of work materials and for certifier safety. Channels shall be secured to the glass permanently using adhesive. The glass shall be secured into the frame with a flexible material to prevent window breakage. The horizontal width of the window frame, channel, and glass thickness shall not exceed 0.35 inch. Approved alternate: the left and right bottom corners of the safety glass may be exposed provided the corners are ? inch radius construction and beveled with no sharp edges. The exposed glass edges shall not be used as a stop against a metal assembly with rubber stops. The sash shall be designed to slant 10 degrees from vertical ±2 degrees to reduce operator fatigue.3.4.3.1The sash shall be designed to allow field replacement of the safety glass. The sash assembly shall secure the safety plate glass vertically using left and right channel system that is designed to hold the glass securely. This system shall secure the glass and channels and prevent the sash from escaping from the channels if a cable should break.3.4.3.2The method for raising and lowering of the window frame shall be with the assistance of counter balance mechanisms located on the left and right side of the window frame. The mechanisms shall apply sufficient force to maintain the window frame/sash at rest in any open position desired by the user. This could be achieved by the use of a counter balance assembly, using counter balance weights, with adjustable cables to ensure the window remains level.3.4.3.2.1Upper and lower sash stops shall be provided with rubber bumpers to protect the sash assembly from an impact load of 10 pounds per side in either the raised or lowered position without any visible distortion in the stop assemblies or the related fasteners. Rubber stops shall contact the metal window frame, not glass or metal edges. All metal sides shall be protected from metal to metal contact with Teflon strips applied on all contact surfaces.3.4.3.2.2The manufacturer shall run window sash open and close cycle studies of at least 20,000 cycles to verify the integrity of the counter balance mechanisms for the application.3.4.3.2.3The supplier shall provide a sash mechanism to facilitate raising and lowering the sash with one hand. This is necessary because cabinet operators will use one hand to raise the sash while holding a research object with the other. Therefore the supplier shall provide a window assembly that can be raised and lowered with one hand within an offset of ±10 inches from centerline of the sash. The sash shall work smoothly and freely in the sash guides when operated in this manner.3.4.3.3The slide mechanism shall consist of the flexible cable, stainless steel fasteners, and lifters with stainless steel rails to allow the window to be raised and lowered with no more than 0.125 inch of lateral or transverse movement between the window frame and rails. Essentially, the window shall not rack more than 0.375 inch from left to right upon raising and lowering. Racking is a manufacturer defect that will result in a 1.2.1 notification since the condition of racking generally results in window breakage as the operator applies more pressure in order to lift and close the sash. It is understood that if the sash is found out of adjustment, that the university agent shall determine whether this is a manufacturing problem or maintenance. The cables should fasten to a lateral frame member of the window with stainless steel hooks to facilitate maintenance. Each lifting cable shall be provided with a counter balance mechanism designed to allow the window to be passively raised and lowered. If the window moves actively against or with gravitational forces, the manufacturer will be contacted to arrange for replacement parts to be installed at the manufacturer’s expense, or a 1.2.1 notification will be made.3.4.3.3.1Lower Sash Stop: The cabinet shall be provided with two lower window stops and rubber bumpers. The bumpers shall contact only the metal frame of the sash.3.4.3.3.2The sliding window frame shall be provided with a longitudinal scavenger slots to be located on the upper front edge of the cabinet work zone. The slots shall be designed to prevent room contamination from entering the cabinet work zone which is rated for ISO Class 5 conditions.3.4.3.3.3Sliding Window Exhaust Slots: The interior upper side of the sliding window frame shall be maintained in a negative pressure condition relative to the exterior atmosphere of the cabinet. This shall be accomplished with at least two ventilation slots per side on both the left and right sides of the window. The vents shall directly vent into the negative pressure plenum of the cabinet. The vents shall be punched and tear proof to laboratory gloves.3.4.3.3.4Sash Handles: Two stainless steel handles shall be attached to the lower outside edge of the window frame at the tri-sectional midpoints of the lateral window frame member. Window handles shall be permanently bonded to the window glass using adhesive, or welded. In the event that the handles fail within a six year period from the date of manufacture, the manufacturer shall provide replacement parts and adhesive at no charge.3.4.3.3.4.1Each handle shall extend away from the outer lower edge of the window frame at least one inch.3.4.3.3.4.2The portion of each handle that projects away from the window frame shall be at least 14 gauge polished stainless steel with all corners and edges beveled to at least 0.0625 inch radius in both vertical and horizontal corners. No holes and/or slots shall be allowed in the handle surfaces used by a cabinet operator to raise and lower the window, except for the attachment fasteners. 3.4.3.4Unobstructed Work Zone Interior Access Requirement: With the window in the raised position, access to the interior of the safety cabinet shall be unobstructed by cross-members.3.4.3.5Sash Alarm: The operational height of the sliding window shall be set by the supplier with an audible warning device installed to sound when the window is raised above or lowered below the operating height. The alarm shall shut off when the sash is at the lowest point of travel (closed). The noise level of the alarm shall not exceed 80 db-A with a background sound level of less than 55 db-A. The sash alarm switch shall be low voltage 24V or less to reduce the risk of electric shock hazard to certifiers and cabinet operators.3.4.3.6Energy Saving Mode: The cabinet shall have an energy saving mode which shall be activated automatically when the view screen is placed in the closed position. When the cabinet is in the energy saving mode, the lights shall be off, the motor shall operate at a reduced speed, and the total cabinet current draw shall be no more than 2.0 amps. The cabinet manufacturer shall provide passing results of testing the cabinet to the NSF 49 Standard for both Personnel and Product Protection with the cabinet view screen closed and the cabinet in energy saving mode. The three inch cylinder required in the NSF test may be omitted because the view screen has to be closed.3.4.3.7UV Interlock: The manufacturer shall provide a UV lamp interlock, which will prohibit the UV lamp from operating unless the sash is fully closed.3.4.3.8The window and frame shall be flat within 0.125 inch maximum offset over 70 inches. Windows which do not conform to this requirement will be replaced at the manufacturer’s expense.3.4.3.9With the window frame removed, the mating surface of the cabinet, which forms the frame that the window seals against, shall be flat (0.125 inch offset in 80 inches) and smooth so that a plastic shield can be taped in place temporarily to close the front opening of the cabinet during the leak tightness test, Paragraph 4.2.1, and for decontamination. An unobstructed frame clear space of at least 1.0 inch is recommended; a 0.75 inch absolute minimum shall be provided around the entire perimeter of the cabinet face with the window frame removed.3.4.3.10Under special circumstances, the University may request a 7.5 inch sash opening, which is not listed in NSF-49.3.5Materials and Components3.5.1Corrosion and Moisture Resistant Requirement: All cabinet surfaces, interior and exterior, shall be constructed of, or finished with, materials which are corrosion, flame and moisture resistant. This shall include all components of the cabinet, including but not limited to motors, wiring, and other electrical components. These materials shall not deteriorate under exposure to liquid or vapor phase decontaminants such as formaldehyde, alcohol, chlorine dioxide, iodophors, peracetic acid, halogenated phenols and hypochlorite solutions or exposure to ultraviolet radiance.3.5.1.1Option: Hydrogen Peroxide Resistant Components: The University shall reserve the right to specify cabinet construction to be used with hydrogen peroxide as a decontamination agent. The supplier at the time of request for purchase shall be notified that this option is being exercised and the supplier will then supply a cost estimate to comply with this additional requirement. This is a REMOTE possibility and therefore has not been included as a base bid optional request. The cost estimate shall be provided to the UW Purchasing agent for evaluation in conjunction with the University Agent and/or Biosafety Department.3.5.2Sheet Metal and Finishes3.5.2.1Metal Thickness Required: The thickness of metals used for cabinet work zone construction shall be at least U.S.S. Gauge No.16. The work surface and reinforced access panels shall not be less than U.S.S. Gauge No. 16. The exterior cabinet construction shall not be less than U.S.S. Gauge No. 16 on rigid panel construction and 18 gauge on dress panels. Dress panels shall have positive gravity assist tabs or fasteners to prevent panels from harming operators or certifiers as a fall hazard. The supplier shall offer all stainless steel construction if requested, on an individual basis.3.5.2.2Metal Finish Required: All cabinet interior work surfaces, including the drain pan assembly, shall be fabricated with corrosion-resistant 16 gauge stainless steel that shall conform to Federal Specification QQ-S-766, Class 304, No. 4 satin finish. The window metal clines shall be stainless steel with at least a No. 4 satin finish. Raised surfaces on the liner walls as determined by inspection of the University Agent are a manufacturing defect. The manufacturer shall be informed to correct this on future models and if the raised surfaces continue in later delivered models, the manufacturer shall be requested to replace the surface under examination or replace the cabinet.3.5.2.2.1The cabinet interior work zone side walls, rear wall and inlet flanges shall be fabricated from a single sheet of stainless steel with punched scavenger slots at the work zone vertical walls, at the zone behind the sash, and for the frontal service entrance to the UV lamp sockets. The rear vertical work zone corners shall have at least 0.44 inch radius corners, 0.50 inch corners are recommended.3.5.2.2.2Both the left and right inlet sides of the work zone shall be provided with at least fifteen exhaust scavenger slots at the vertical inlet work zone side wall flanges.3.5.2.2.3The rear wall or rear work zone exhaust slots and all scavenger slots shall be fabricated from punched metal stock. The manufacturing process shall insure that the work zone side is tear resistant to laboratory gloves.3.5.2.3Prime Grade Cold Rolled Steel: Steel sheet used in the cabinet fabrication shall be prime grade, cold rolled carbon steel. Carbon steel sheet shall be used where Paragraph 3.5.2.2 does not apply.3.5.2.4Carbon Steel Finish Before painting/coating, surfaces shall be cleaned of dirt, oil, and grease. The carbon steel shall be given a phosphate coating treatment in accordance with Federal Specification TT-C-490. Enamel finish shall be a uniform satin luster white. Concealed surfaces or hollow metal sections shall be protected from the finish previously specified, by a suitable method, after welding, but before assembly. All welded studs shall be covered with rubber caps to protect the stud threads from overspray. Failure to cover the threads will result in a 1.2.1 notification and possible field repairs being carried out under the specified conditions of paragraph 6.3.4.3.5.2.4.1Uniform Pressure Secondary Supply Filter Plenum requirement: The interior supply filter plenum shall be designed to produce uniform airflow per unit area of upstream supply filter by applying computational fluid dynamics modeling to allow the air from the blower and blower discharge plenum to turn and introduce the supply filter air in a near uniform condition across the filter and promote uniformity in the final cabinet airflow which will facilitate certification and filter life. The plenum shall produce uniform airflow into and out of the secondary supply filter. This dynamic condition is accomplished by careful design analysis of the fluid properties of air introduced into the plenum, the plenum curvature and baffles for turning the blower air and air introduction into the filter itself. Furthermore the roughness of the plenum surfaces must be smooth and free of fabrication debris. Fabrication debris shall be defined as detached particles such as metal filings and grit greater than 0.0625 inches in size. 3.5.2.4.2Puncture and Tear Requirement: All exterior metal plates, window sash handles and frames, all interior work zone metal surfaces, all metal diffusers/grills, the metal spill trough, all interior metal surfaces within 6 inches of each HEPA filter, and the fan/motor assembly and compartment shall have no exposed metal edges, seams or corners that will puncture or tear a nitrile examining glove when advanced across these surfaces with a maximum force not to exceed one pound per square inch of glove surface area. The nitrile glove cited in this requirement shall be Fisher Scientific brand, number 19-050-550C, marketed by Fisher Scientific 2000 Park Lane Drive, Pittsburgh, Pa 1-800-772-6733. Puncture and tears will be deemed as poor workmanship and result in a 1.2.1 notification and field repair as specified in Paragraph 6.4.3. More than five areas in the cabinet having tear and puncture potential will result in cabinet rejection and request for a replacement.3.5.2.4.3Finish Texture Required: FLAT All exterior surfaces shall have a flat finish application. A flat finish surface shall be defined as a continuous surface in either the horizontal or vertical plane with no surface distortion in excess of ±0.001 inch. Paint/coating runs from either overspray or finishes purposely designed with an irregular surface shall be a cause for rejection of the cabinet and result in a 1.2.1 notification.3.5.2.4.3.1All electric welded stud construction shall be protected from paint over spray. The method of protection shall be a rubberized cap fitted over each stud prior to painting. Failure to cover the threads will result in a 1.2.1 notification and possible field repairs being carried out under the specified conditions of Paragraph 6.3.4.3.5.2.4.4Exhaust Filter: On biological safety cabinets designed to exhaust air to the building exhaust system, the cabinet exhaust filter shall be enclosed by a negative air plenum. The manufacturer shall maintain a clearance zone of 4 inches (-0, +2) above the frame of the exhaust HEPA filter to facilitate scan testing and filter repairs.3.5.2.4.5Interior Metal Duct: The interior metal air ducts from the re-circulating fan assembly to the secondary supply filter and exhaust air duct shall be 16 gauge steel. Flexible or non-rigid duct construction is prohibited. The transverse and longitudinal seams should be continuously welded. Alternatively, a bolted and gasket assembly is allowed provided that either construction complies with leak tight construction on all rigid portions of this internal ductwork.3.5.2.4.6Painted Surfaces: Epoxy powder coated finish – painted permawhite shall be a uniform satin luster white or approved alternate. Prime and finish coats shall be applied by spraying or dipping, and baked after each coat for a minimum of 15 minutes at 300 degrees Fahrenheit. A total thickness of not less than one mil shall be achieved. Concealed surfaces or hollow metal sections shall be protected by the finish previously specified, by a suitable method, after welding, but before assembly. Epoxy coatings can be used to coat all carbon steel surfaces and they shall conform to TT-C-001224 and shall be a uniform satin luster white. A polyurethane coating can be used to coat all carbon steel surfaces and it shall conform to TT-C-001227 and shall be a uniform satin luster white. All carbon steel surfaces shall be painted and stainless surfaces and accessories protected from over spray. Painted over spray on cabinet surfaces shall result in a 1.2.1 notification and Paragraph 6.4.3 will be exercised to remove this paint if possible.3.5.2.4.6.1Optional colors and all stainless steel may be available by special request and cost. It is strongly recommended that the white color be observed for safety reasons.3.5.2.4.6.2Raised painted surfaces greater than 0.1 mil are prohibited and will result in 1.2.1 notification for correction.3.5.2.4.6.3Option: The supplier shall offer all stainless steel construction, no painted surfaces.3.5.2.4.7Option: Reinforced work surface: The manufacturer shall offer a reinforced work surface designed for increments of 100 pound loading up to 300 pounds.3.5.2.5Supply Air Grill (SAG) and Air Curtain3.5.2.5.1The SAG shall be stainless steel and constructed in accordance with specifications cited in Paragraph 3.7.3. Fasteners used to hold the grill in place shall be tear resistant per Paragraph 3.5.2.4.2.3.5.2.5.2The SAG shall be mounted approximately 2.0 to 4.0 inches below the filter media. The SAG shall fit flush to the left and right liner sidewalls and rear wall.3.5.2.5.3Air Curtain: The front edge shall be turned to allow for an air curtain on the interior side of the sash to control ingress of room particulates during operator movement into and out of the cabinet work zone.3.5.2.5.4The SAG shall be easily removed from the attachment points with holes in the SAG at least 40 percent larger than the fastener shaft to facilitate SAG installation. SAG removal that results in damage to the cabinet sidewalls or filter will result in a 1.2.1 notification as a manufacturing defect. The manufacturer will be requested to supply a replacement SAG, fasteners, re-drill thumb screw holes or replace the safety cabinet.3.5.2.5.5No open cell foam shall be allowed on the SAG or within the vicinity of the cabinetwork zone (work surface to downstream face of the supply HEPA filter).3.5.2.5.6The space between the SAG and HEPA filter shall be a smooth, stainless side wall contiguous with the filter gasket. No cavities or structural reinforcement in this critical area shall be allowed, due to the necessity for field filter repairs and prevention of contamination.3.5.2.5.7All edges on the SAG shall be smooth and will not tear or puncture a laboratory nitrile glove as detailed in Paragraph 3.5.2.4.2.3.5.2.6External Air Balancing Damper3.5.2.6.1The cabinet shall contain an external leak tight air balancing damper located after the uncontaminated exhaust pressure plenum, just above the exhaust outlet collar. The damper shall be adjustable with a locking device and have a large rotating arm for field maintenance activities.3.5.2.6.2The damper assembly shall be constructed of stainless steel, have an o-ring seal and pass a leak test.3.5.2.6.3The damper assembly shall be of the same finish as the interior liner. Non-stainless steel dampers are prohibited and will result in a 1.2.1 notification. The damper assembly shall be smooth and pass the tear resistance test per 3.5.2.4.2.3.5.2.7Exhaust Transition and Airflow Monitor3.5.2.7.1Manufacturer shall supply a hard connected transition with a 12 inch round exhaust collar. The external leak tight damper assembly shall be 12 inch round (±0.25”). Smaller sizes shall be considered on an individual basis; however the 12 inch damper shall be standard.3.5.2.7.2Manufacturer shall supply stainless hose rings and reinforced flex duct to allow contractors to connect the damper assembly to the cabinet and to the house exhaust duct without the use of fasteners which can damage the damper o-ring seal. The manufacturer shall provide written instructions and drawing with each cabinet to explain to cabinet installers not to use fasteners on the stainless damper assembly and to use the o-rings and flex seal. If the manufacturer uses companion angle rings and gasket to connect the upstream isolation damper to the exhaust transition, hose rings shall be used on the downstream section of the damper assembly.3.5.2.7.3Airflow Monitor and Interlock: An airflow monitor is required on a Class II Type B1 cabinet. The airflow monitor shall be interlocked to the cabinet blower switch and not allow operation of the cabinet blower unless the building exhaust has been proven. Further, the interlock shall shut off the cabinet blower and turn on an alarm if the building exhaust decreases 20% or more, or fails completely. The airflow monitor shall be field adjustable. 3.5.3Glass3.5.3.1All windows shall be 0.25 inch laminated safety plate glass in conformance with PPG’s “Duo-Lite" or equal. All glass shall conform to ANSI Z97.1-2009.3.5.3.2Exposed glass edges are prohibited except at corners. All exposed corners shall be 0.375 inch to 0.50 inch radius to prevent sharp exposed corners. All edges shall be metal clad, glass edges beveled and corners rounded to at least 0.375 inch radius.3.5.3.3Sash glass shall not exceed ?” thickness.3.5.4Filters3.5.4.1High Efficiency Particulate Air (HEPA) filters zero probed, 99.99 percent efficiency, shall be required for both supply (primary and secondary) and exhaust air systems of all cabinets. Refer to USAEC, ORNL-NSIC-65 or ASME Code on Nuclear Air and Gas Treatment, AG-1. The University may require higher efficiency filters UPLA (greater than 99.99 percent) on an individual procurement basis. Primary HEPA filters shall be standard construction aluminum frame and sized small for bag-in/out procedure, autoclave procedures within the laboratory, and shipping in approved US Department of Transportation containers. Therefore the primary supply filters exterior dimensions shall be no more than 8.06 inches (-1/8 inch) in depth, 21 inches (-1/8 inch) in length, and 12.88 inches (-1/8 inch) in width.3.5.4.2The cabinet shall be designed such that all HEPA filters can be replaced without any additional attachments or assemblies permanently affixed to the HEPA filter frames. HEPA filters that have permanently attached flexible plenums are prohibited and will result in a 1.2.1 notification.3.5.4.3All supply and exhaust filters shall be high efficiency, fire resistant, particulate air filters, in conformance with MIL-F-51079B, Type 1C with fire retardant treated plywood or aluminum frames, self-extinguishing type adhesives and sealant, and glass fiber media. Filters using asbestos materials are prohibited. No filter shall have factory test patching greater than one percent of the open face area. Filter sizes not listed in MIL-F-51079B shall be acceptable. Paragraph 3.4.7 of the MIL-F-51079B covering the environmental testing shall not apply.3.5.4.4All supply and exhaust filters shall conform to IEST Standard IEST-RP-CC-001.5. Each filter shall be construction Grade 3 or 4, performance Type C or Type J. A label shall be affixed to each filter frame detailing testing requirements, ratings, manufacturer’s test results, date tested, and name of the factory test agent. The test results shall indicate DOP leak rate, airflow in CFM and pressure drop across the filter during filter testing.3.5.4.5Filter mounting(s) tolerances shall be for openings up to 20 inches (+0.0625, -0 inches), and for openings over 20 inches (+0.125, -0.0 inches). The square ness of the filter mountings shall have diagonals within a 0.0625 inch total allowance. Width of the gasket seating area shall be 0.75 inches (+0.25, -0.0 inches). 3.5.4.5.1Filter mountings which provide a knife-edge seal between the face of the filter and the sealing edge of the frame are prohibited and will result in purchase cancellation unless the gel seal is used on the primary supply filter in conjunction with an exhaust HEPA filter and secondary supply HEPA filter. If gel seal is used, it shall be silicone base, “Blue Gel”, the integrity of which as defined by the aerosol leak test (0.01% Scan) for the life of the filter. Other gel seals are prohibited. This includes polyurethane.3.5.4.6HEPA filters mounted in such a manner that the total weight of the filter(s) is supported by the clamping mechanisms shall not be acceptable. On those cabinets provided with a secondary supply filtration system, clamping mechanisms may carry the weight of the filter provided that the clamping mechanism is designed to carry the weight of the filter plus at least 10 pounds of force per lineal inch of filter frame.3.5.4.7Exhaust filter(s) shall be sized for a maximum clean pressure drop of 0.5 inch WC at a face velocity condition of 105 LFPM (± 5 LFPM).3.5.5Gaskets, Seals and Clamps3.5.5.1HEPA filter seals using fluid seal systems are not acceptable and will result in a 1.2.1 notification except as noted in Paragraph 3.5.4.5.1. 3.5.5.2The HEPA filter gasket materials shall be cellular sheet or molded rubber or closed cell expanded neoprene gasket materials. 3.5.5.2.1All HEPA filters shall be sealed to the cabinet plenum. The accepted method is the use of clamps designed with sufficient rigidity to uniformly compress the filter gasket material 50 percent of thickness along the perimeter of the filter/cabinet interface. Filter clamps shall be constant pressure type used to clamp supply and exhaust HEPA filters in place. An alternate filter seal method can be evaluated provided that the method can be shown to work upon filter replacement cycles and pass the NSF-49 aerosol challenge test.3.5.5.2.2All clamping mechanisms shall apply constant pressure to compress the filter gasket 50 percent along the perimeter of the filter frame. 3.5.5.2.3Rear filter clamps, if used must be accessible by certifiers using standard tools available from WW Grainger. Inaccessible clamps will result in a 1.2.1 notification.3.5.5.3Unless otherwise specified herein, neoprene rubber gasketing, 25 to 45 Durometer, with vulcanized or sealed joints shall be used in all non-welded cabinet joints, seams, and on the facing of all air access panels of the cabinet which form a barrier to the contaminated air plenums. The structural strength of the joints and connections of the service panels shall be independent of the seal produced by the gasket.3.5.5.3.1Gaskets shall have a minimum width of 0.50 inch and a minimum thickness of 0.25 inches on all joints and panels, which form a barrier between contaminated areas of the cabinet and ambient environment. Gaskets shall deform at least 50% in thickness from the perpendicular force applied from the fastening unit. Filter gaskets shall be by the filter manufacturer. 3.5.5.4All joints or assemblies made with sealant bonding in non-contaminated areas shall be made by one of the following methods. The structural strength of the joints or assemblies shall be independent of sealants.3.5.5.4.1Two-part accelerated synthetic rubber (polysulfide type) sealing compound, temperature resistant, high adhesion aircraft specification grade, MIL-S-8802 or PR-1422 Class B-2, Products Research Company or equal shall be acceptable.3.5.5.4.2One part silicone-base sealant compound, such as Dow Corning RTV 732 Adhesive Sealant, Dow Corning RTV 781 Building Sealant, or equal shall be acceptable.3.5.5.5All joints formed using fasteners and gaskets and made to conform to leak tight construction (Paragraph 3.11) shall not contain sealant bonding on the fasteners. Sealant bonding on the fasteners shall be deemed a fabrication defect and result in a 1.2.1 notice of noncompliance.3.5.6Fan(s)3.5.6.1The cabinet shall have no more than one motor driven fan system for re-circulated air. No motor driven fan system shall be provided to move the exhaust air.3.5.6.2Fans shall be labeled in accordance with Bulletin 211 of the Air Moving and Conditioning Association. Manufacturer’s name and nameplate data shall be labeled on each fan scroll, indicated on permanent label on the outside of the cabinet, and in the operations manual. Fan housing and blades shall be fabricated of or protected with corrosion resistant materials to withstand normal laboratory or chemical fumes and as specified in Paragraph 3.5.1.3.5.6.3Total fan delivery shall fall off no more than 10 percent as a result of 100 percent increase in the pressure drop across the primary supply filters. The supplier shall provide a graph/data table of the test results for the automatic airflow compensation for filter loading from 0 to 200 percent. No manual adjustment shall be required to compensate for filter loading.3.5.6.4The fan shall be direct connected forward curved centrifugal fan in conformance with AMCA standards. 3.5.6.5The fan installed shall be balanced within the vibration limits of Section 3.10.3.5.6.6The fan/motor assembly shall be isolated from the cabinet by means of a vibration isolation system such as motor struts and/or bonded rubber springs. Air connections to the fan shall have a gasket interface to reduce vibration transmission. Flexible plenums, including those made out of fabric, are prohibited. Attachment screws and associated metal materials shall be stainless steel. The fan/sleeve connection(s) shall be such that air leakage is less than 0.5 percent of the total airflow.3.5.6.6.1Fan/motor assemblies with steel spring damping mechanisms are not allowed and will be replaced at the manufacturer’s expense.3.5.6.6.2A flexible sleeve on the discharge side of the fan is prohibited.3.5.6.7The fan wheel shall contain provisions for attaching a wheel puller in the event that the fan and motor must be separated for maintenance.3.5.6.8The fan wheel and scroll shall be designed to be separated without the need to cut welds in the scroll.3.5.6.9The centerline angle between the fan discharge and receiving plenum shall be greater than or equal to 135 degrees. 90 degree elbows on the fan discharge shall be prohibited.3.5.6.10The fan scroll when installed shall not contact the exterior cabinet metal walls. A minimum peripheral clear space of 0.375 inches shall be maintained.3.5.6.11The fan wheel shall be balanced to meet the vibration requirements in this specification.3.5.7Electrical Components3.5.7.1Electrical Requirements – General3.5.7.1.1The cabinet electrical system, when connected to the owner supplied 115VAC/20Ampere wall outlet shall have a ground resistance not to exceed 0.15 ohms, a “no fault” electrical leakage current tested to 3500 micro-amps single fault per UL61010-1, correct wiring polarity and ground fault circuit interrupter that will trip at 5.0 or more milli-amperes. If these minimal electrical conditions cannot be achieved, the manufacturer shall be contacted and the components repaired or replaced. This shall include all components contained under Paragraph 3.5.7.3.5.7.1.2No polychlorinated biphenyls (PCBs) shall be allowed in any electrical component.3.5.7.1.3Cable and wire shall conform to Federal Specification Cable Power, Electrical and Wire (Weather Resistant) J-C-145.3.5.7.1.4Receptacles and plugs shall conform to Federal Specification W-C-00596.3.5.7.1.5All electrical components and wiring shall conform to the latest edition of the National Electrical Code and the National Electrical Manufacturers Association (NEMA). The entire cabinet must be listed as certified by Underwriters Laboratory (UL) or the Canadian Standards Association.3.5.7.1.6Separate metal parts of the cabinet shall be interconnected (jumpered) and grounded to the common ground with the electrical components. These interconnections shall be made on the inside of the cabinet. All electrical components shall have green wire ground connections.3.5.7.1.7Electrical parts shall not be located in the air passage from the work surface to the filters except for the fan motor, one (two) junction box(es) containing only permanently connected conductors, wiring for the optional UV lamp assembly, and necessary wires and cables.3.5.7.1.8Cabinet Wiring Diagram Location: Two up-to-date wiring diagrams showing connection of all electrical components shall be provided. One diagram shall be permanently attached to the cabinet in the service control center and the other provided in the service manual. 3.5.7.2Main Power3.5.7.2.1Service plugs to electrically disconnect the Service Control Center: Male/female plastic plugs shall be provided to separate the service control center from the cabinet body. On that side of the plug going to the cabinet body shall be provided with a clamp assembly to secure the plug wiring harness. The wiring harness itself shall be provided with a stress relief mechanism to allow wiring to easily be secured back into the service control center when reattached to the cabinet body. The wiring harness shall not rub against the window, contact sharp sheet metal assemblies which can degrade insulation, or prevent closure of the service center assembly.3.5.7.2.2The cabinet flexible power cord shall be a three wire with ground wire for single phase power unless otherwise specified, and shall be sized in accordance with the National Electrical Code for the specified load. It shall be labeled in accordance with UL Standard(s) UL-817 and/or UL-62. The power cord should directly connect to the service control center and not pass through contaminated plenums.3.5.7.2.3Main Power Cord shall be number 12 gauge cord with a Nema 5-20P cap plug. The exterior portion of the cord shall be at least 14 feet in length. The cap and cord shall be of monolithic construction. Separate cord cap plugs are prohibited. The cord shall be secured to the cabinet frame to maintain the cord in position and not obstruct other components of the cabinet.3.5.7.2.4The main power cord shall exit the top of the cabinet on the operator right side.3.5.7.3Motor3.5.7.3.1The motor used in the fan system shall be designed that the motor winding temperature shall not exceed a temperature of 105 degrees Centigrade in a maximum ambient temperature of 48 degrees Centigrade (120 degrees Fahrenheit) under any maximum load condition. The thermal protector shall not trip at 115 percent of the rated voltage under maximum load and ambient temperature conditions. The motor shall be rated for 24 hour continuous operation. Nuisance trips shall not be allowed. The motor shall conform to Federal Specification CC-M-636.3.5.7.3.2The motor switch shall be interlocked to the airflow monitoring system.3.5.7.3.3The motor shall be rated by the motor manufacturer for a continuous design running time of 50,000 hours (5.7 years).3.5.7.3.4The motor performance curve should be provided with each cabinet in the operations manual with a format as detailed in Paragraph 3.1.1. Motor performance curve shall be provided in the initial bid.3.5.7.3.5The motor shall be sealed (not shielded) bearing construction.3.5.7.3.6The motor shall be sized to operate the fan at airflow sufficient to maintain a down flow velocity in accordance with Paragraph 3.7 with a total fan delivery requirement as specified in Paragraph 3.5.6.3.3.5.7.3.7Electrical Requirements. The motor shall be 230 volts, 3-phase, 60 hertz AC, and of appropriate HP to provide and sustain the required full load. Dual rated voltage motors shall not be acceptable. Full load is defined as that condition associated with the fan operating at a static pressure condition necessary to overcome at least a 100 percent increase in primary supply filter static pressure with up to a maximum of 10 percent drop in total airflow in CFM, Paragraph 3.5.6.3.5.7.4Motor Controller3.5.7.4.1Motor controllers shall be an adjustable Variable Frequency Drive (VFD). The VFD shall be 115V AC single phase input 230V, three phase output capable of running a ? hp motor. The VFD shall be programmed with an algorithm that automatically adjusts the motor control frequency/speed to compensate for changes in filter loading.3.5.7.4.2Motor controllers shall have a provision for reduced power operation when the cabinet sash is closed.3.5.7.4.3Motor controller switches/adjustment knobs shall be readily accessible if the motor controller can be adjusted manually by certifiers, under the direction of technical service representatives.3.5.7.4.4A cover shall be provided for the motor controller/VFD to protect it during repair work. The cover shall be vented and extend above and below the main chassis that the remaining wiring is attached to.3.5.7.5Lighting3.5.7.5.1Ballasts shall be UL and/or CSA approved. Each unit shall be designed to satisfactorily start and operate the type of fluorescent lamp in the particular fixture and shall meet the current practice and requirements of the “Certified Ballast Manufacturer.” Ballast design voltage shall suit the circuit voltage from which the fixtures are to be operated. Two lamp ballasts for operation of rapid start types of fluorescent lamps may be series-sequence type. Ballasts shall be securely fastened in place with the mounting surface of the ballast making a complete contact with the surface of the ballast mounting plate of the fixture as practical.3.5.7.5.2No ballast(s) shall contain any derivative of polychlorinated biphenyls (PCBs).3.5.7.5.3Electromagnetic ballasts are prohibited in front mounted canopy control assemblies unless the assembly has at least 25 percent open area for ventilation.3.5.7.6Duplex Receptacles3.5.7.6.1A 115 volt, 60 hertz, AC, three prong convenience duplex receptacle for grounded plugs shall be provided on each side of the cabinet sidewalls (left and right) just above the work surface. Work tray removal and average user reach capabilities shall be considered. The receptacles as located shall cause minimal disruption of the airflow pattern and allow at least a 2.0 inch vertical clearance between the uppermost section of the work tray and the lower edge of the faceplate to the receptacle. All duplex outlets shall be Hubbell No. 5262 specification grade or equivalent. All receptacles shall be protected with a ground fault circuit interrupter system as defined in Paragraph 3.5.7.6.2. One of the receptacles shall be a GFCI which will feed the second duplex receptacle on 4 and 6 foot cabinets. The GFCI shall have a single waterproof cover and the standard duplex outlet shall have dual independent covers. Both outlets shall have a circuit breaker or fuse inside the service control center.3.5.7.6.2Ground Fault Circuit Interrupter (GFCI) A ground fault circuit interrupter shall be provided on one duplex outlet circuit and be designed for a maximum threshold leakage of five milli-amperes. The circuit shall be protected with a circuit breaker or fuse, which is separate from the protection device for the motor, lights, and control circuit, and shall comply with the National Electrical Code.3.5.7.7Controls3.5.7.7.1Switches shall conform to Federal Specifications W-S-893 and W-S-00896.3.5.7.7.2Touch pad switches shall be low voltage membrane touch pad. 3.5.7.7.3Touch pad switches shall be raised to facilitate user ergonomics. Touch pad switches shall operate smoothly and require little force to activate and deactivate the fluorescent lamp, blower, UV, and receptacle. Touch pad switches shall be easily cleaned and not be affected by decontamination chemical agents commonly used in biological research.3.5.7.7.4PC board low voltage shall be provided with touch pad controls for the fluorescent, blower, UV, and receptacle. Rocker switches are prohibited. The PC board shall have pilot lamp display on all touch pad low voltage switches and LED lamps on the PC board to trouble shoot the board itself for fluorescent, blower, UV, receptacle, and sash position sensor operations. There shall be a ladder schematic next to the PC board detailing the wiring harness plug in areas on the board. The board shall be attached using welded studs or tack on plastic stays.3.5.8Pressure Gauges and Cabinet Operator Warning Systems3.5.8.1Airflow Monitoring System: Each Class II Type B1 shall be equipped with an airflow monitoring system downstream of the exhaust filter. The airflow monitoring system shall be connected to a cabinet operator warning system. The warning device shall be located in the front of the cabinet and be designed to alert cabinet operators when the mass exhaust airflow has dropped to or below 20 percent of the set point exhaust airflow for certification. The power source for the airflow monitor shall be located inside the service control center. The cabinet internal blower shall be interlocked to the airflow warning system and automatically turn off the supply blower when the system is in alarm condition. The airflow warning system shall not be operated from the cabinet blower switch and will remain on continuously. The airflow warning system shall be field calibrated by the certifier.3.5.8.2Pressure Gauges: Each Class II Type B1 cabinet shall be equipped with two front mounted diaphragm operated, mechanical differential pressure gauge rated for ±5 percent full scale accuracy. The gauges shall measure the differential pressure from the laboratory to the primary supply HEPA filter plenum and the exhaust HEPA filter negative pressure plenum. The gauge scale shall read at least 200 percent of the initial plenum pressure. 3.5.8.2.1The HEPA filter gauges shall be a four-inch diameter gauge as manufactured by Dwyer Instruments, Michigan City, Indiana or equivalent.3.5.8.2.2The gauges shall conform to paragraph 3.11.3.5.8.2.3The gauges shall be mounted in a location that does not require gauge disassembly in order to remove the HEPA filters.3.5.8.2.4The gauges shall have a front adjustable screw to adjust the needle to zero without disassembly of the gauge or removal of any cabinet assemblies to access this adjustment screw.3.5.9Leak Tight Damper in Exhaust Transition3.5.9.1Each cabinet shall be provided with a 12 inch airtight damper to completely isolate the cabinet from the building exhaust system for decontamination. The damper shall be a butterfly assembly mounted in a seamless duct. The mating surface between the damper and duct shall be a continuous rubber ring. The damper assembly shall be at least eight inch in diameter, however the standard size shall be 12 inch diameter.3.5.9.2The damper will be operated with a handle which is connected to the pivoting shaft of the damper blade.3.5.9.3The end connectors of the damper shaft shall be gas tight and the damper arm shall be vertical when open, ±10 degrees.3.5.9.4The damper shall be provided with upstream and downstream flexible sleeves and hose rings to allow field installation of the damper assembly to the collar of the exhaust filter box assembly.3.5.9.5All metal parts of the damper assembly shall be stainless steel.3.5.9.6The damper assembly shall conform to leak tight construction, Paragraph 3.11.3.5.9.7Label Requirement: A red warning label with white ? inch lettering shall be posted above the damper assembly warning against hard connecting the damper exhaust outlet duct to the receiving exhaust duct. Damper o-rings have been damaged from such practices. The sign shall say: “Warning! The exhaust transition cannot support the overbearing weight of the ductwork without damaging internal cabinet components. Under no circumstances shall the damper assembly be hard connected to the house exhaust system. You must use the flexible sleeves and hose rings provided.”3.5.9.8The damper assembly shall have a 0.5 inch diameter hole located on the front side of the damper assembly for testing and aerosol injection. The hole shall be finished smooth and be provided with a sealable plug.3.5.9.9The damper handle shall be capable of being locked into place by University of Wisconsin – Madison staff. This will ensure users are not tampering with the location of the damper and affecting airflow.3.5.10Plumbing3.5.10.1Work Area Trough Drain Pipe Assembly3.5.10.1.1A stainless steel drain pipe shall be connected to the lowest point in the perimeter drain spillage trough, which shall be piped to a minimum 0.375 inch female NPT stainless steel ball valve located on the front operator left side of the cabinet. The ball valve and ball valve connection shall conform to leak tight construction, Paragraph 3.11. This shall be provided on all UW cabinets.3.5.10.1.2The handle of the drain valve and/or an appropriate area next to the drain valve shall be permanently marked DRAIN VALVE. The open and closed positions of the drain valve shall be permanently marked on the cabinet next to the drain valve or marked on the handle of the valve itself. 3.5.10.1.3The drain valve handle, in the closed position, shall point away from the cabinet operator and be horizontal.3.5.10.1.4The welded stainless pipe nipple to connect the drain valve shall be located such that the valve assembly axle does not touch any surfaces of the cabinet. Valves striking the cabinet surfaces or installed such that the handle protrude into the knee space is a safety hazard and the manufacturer shall receive a 1.2.1 notice requiring that the handle assembly and welded nipple be relocated to a location that does not interfere with cabinet operators or causes damage to cabinet surfaces.3.5.10.2Aerosol Sampling Port Assembly3.5.10.2.1An external aerosol port connected to the primary negative supply pressure plenum shall be provided downstream of the primary HEPA filter(s) for testing.3.5.10.2.2The port shall be located in the cabinet supply blower access panel.3.5.10.2.2.1The port shall be a welded coupling, at least 0.50 inch NPT female pipe size. The coupling shall be continuous welded to the cabinet access panel. An NPT male pipe plug shall be used to seal the port entrance. The pipe plug and welded seam shall conform to leak tightness requirements as detailed in Paragraph 3.11.3.5.10.2.2.2A warning label must be prominently displayed near the plug advising that the cabinet be decontaminated prior to removing the plug.3.5.10.2.3An external port shall be provided to measure aerosol in the downstream duct work or plenum of the supply fan(s). The port shall be a welded coupling at least 0.50 inch NPT female pipe size. The coupling shall be continuous welded to the cabinet. An NPT male pipe plug shall be used to seal the port. The pipe plug and welded seam shall conform to leak tightness requirements as detailed in Paragraph 3.11. The port shall be located to allow for withdrawal of a completely mixed sample. The port shall not interfere with the operation of the cabinet. The port shall conform to Paragraph 3.2.13.3.5.10.2.4An external test port connected to the downstream damper section shall be provided to sample aerosol downstream of the exhaust filter(s). The port shall conform to Paragraph 3.2.13.3.5.10.3Side Wall Hose Cock Assembly3.5.10.3.1Plumbing services should be front access remote controlled valve(s) located within the non-plenum space of the end section(s) and controlled by a handle projecting through the vertical fascia panel of the cabinet with either a rod supported by an angle type escutcheon plate or a valve attached directly to the handle. The valve penetration into the cabinet interior shall be welded or sealed by the sealant bonding material specified. The portions of the valve(s) exposed within and outside the hood shall have a chemically resistant finish as specified in Paragraph 3.5.1. Standard interior petcocks are acceptable in this specification unless special request for remote controlled handles located outside the work zone. In this event additional delivery time will be extended to 120 days.3.5.10.3.2Unless additional petcocks are specified, two petcocks shall be provided on the operator right sidewall. The upper petcock shall be marked for gas and the lower petcock assembly marked for vacuum. Internal piping for the petcocks shall be copper. 3.5.10.3.3All connections in each sidewall shall be located toward the rear of the work area and be stacked one above the other with the top connection approximately 4 to 12 inches off of the work surface and offset from each other. The petcocks shall be offset with the lower unit closet to the front of the work zone.3.5.10.3.4Petcock Labels: The lower hose connections shall be at least 2 inches above the uppermost section of the work tray to facilitate ease in removal of the work tray.3.5.10.3.5Petcocks shall be internally piped to the rear section of the lower horizontal panel of the work zone.3.5.10.3.6All exterior pipe connections for the petcocks shall be 3/8-inch brass pipe female with tube connectors.3.6Lighting and Germicidal Radiance3.6.1Lighting intensities shall average no less than 60 fc (foot-candles) on the work surface, where background light levels average a maximum of 15 fc. Test procedure shall follow NSF/ANSI 49-2012 listed procedure.3.6.2The light source shall be obscured from direct view of the operator and will not create any eye strain from glare on the sash glass.3.6.3The fluorescent lamps shall be cool white, rapid start type. Lamps shall be located outside the workspace and their reflection shall not interfere with visibility through the window.3.6.3.1The fluorescent lamp assembly shall be front-access and located exterior to the work zone.3.6.4Option: Germicidal Lamp: A germicidal ultra violet lamp is optional; the assembly shall be attached to the rear interior wall of the work zone. The lamp shall be located below the supply diffuser and not interfere with the installation and removal of the diffuser. The lamp shall be a low-pressure mercury vapor type, which emits approximately 90 percent of the non-ionizing radiation at 253.7 nanometers. The lamp, when tested, shall be designed to produce at least irradiance on the work surface of the cabinet of 100 ?W/cm2 with no individual reading of less than 40 ?W/cm2 in any area of the work surface, exclusive of those areas which are four inches from the work zone sidewalls. All interior work zone components shall be UV resistant.3.6.4.1The bulb shall be a low ozone bulb.3.6.4.2The UV lamp holders shall be removable from within the biological safety cabinet work zone. UV lamp holders and starters that require dismantling of air plenums for parts replacement are prohibited and will result in a 1.2.1 notification.3.6.4.3The UV bulb shall be fabricated from quartz glass (hard glass). Soft glass UV lamps are prohibited.3.6.4.4The manufacturer shall provide a method to shut off the UV lamp 15 minutes after the start cycle. This can be done by time control relay or by a programmable circuit with touch pad LED panel. The operation time of the UV lamp shall be programmable in 15 minute or 1 hour increments through the control panel.3.6.4.5Test Protocol: UV; Take four measurements along the centerline of the work surface spaced 12 inches from the side walls. Allow the lamp to operate for one minute before taking readings. The minimum average reading shall be at least 100 ?W/cm2.3.6.4.6The UV bulb shall be designed to operate with the cabinet sash in the fully lowered position. The enabling switch logic will preclude UV operation in any other sash position to protect the operator from reflected UV radiance.3.7Airflow3.7.1The downward airflow velocity through the cross section of the unobstructed work area shall be maintained at a level which has been verified by the manufacturer by performance envelope testing. The average velocity shall have a uniformity ±10 percent. The individual velocity readings shall not exceed ±20 percent in the horizontal plane defined 4 inches above the bottom edge of the window frame at the operating position (i.e., eight-inch opening position). If cabinet fixtures must be removed to measure the downflow velocity, the label will provide instructions to this effect.3.7.2The supply air through the front work access opening at the 8 inch opening position shall have a face velocity of 105 LFPM, ±5 LFPM. The face velocity shall be determined in accordance with Paragraph 4.2.4.3.7.3Turbulence caused by filter sealing materials, grills, etc., shall not result in an upward vertical component or refluxing of airflow in the work-space. Solid phase CO2 in water, smoke pencils, MSA smoke sticks, and synthetic fog shall be used to check each operational cabinet for an upward vertical component or refluxing of airflow in the work space due to obstructions. Refluxing of airflow caused by filter media case seals, filter cases, and filter frame supports shall be eliminated by use of a perforated stainless steel supply air diffuser (SAG) that is fabricated with close tolerance to the cabinet side walls, less than 1/8 inch spacing. Titanium tetrachloride smoke and zinc chloride smoke bombs are prohibited.3.7.4The quantity of air leaving the work space through the rear slot shall be equal to that quantity of air entering the work face of the cabinet. The remainder of the re-circulated air shall leave through the front perforated area. The distribution of re-circulated air shall be adjustable.3.7.5Uniform Airflow: The cabinet air grill(s), filtration systems, plenums and fan/motor systems which will produce the required air velocities shall be designed to produce a near uniform and constant velocity distributions on the downstream side of the supply and exhaust systems under undisturbed atmospheric and electrical conditions.3.7.5.1Individual readings of down flow air velocities shall not vary more than ±20 percent or plus or minus 16 FPM, whichever is greater, from the calculated zone or row average under clean filter(s) conditions. For exhaust readings by direct measurement at the work zone using a mass flow meter, the variance shall be no more than 5 percent on at least five readings.3.7.5.2Any individual velocity reading should not vary more than ±20 percent during a 5 second time interval for that particular reading.3.7.5.3There shall be no outward component of airflow in any part of the work access opening. Smoke released at any point in the work opening face shall pass directly into the front perforated opening.3.7.6Aerosols released anywhere in the work space behind the front perforated opening shall not escape through the work access opening.3.7.7Secondary Face Velocity Test: Allowed: if direct measurement technique using a flow hood and secondary measurement using a discrete velocity traverse at the reduced sash opening of 3 inches produces a uniform difference, the manufacturer shall report the conversion/correction factor “CF” on the factory certification report and on the cabinet data label.3.8Temperature Rise3.8.1The design of the cabinet shall be such to limit the inherent temperature rise within the work space to 15 degrees Fahrenheit above the ambient room temperature after four hours of continuous operation as described in Paragraph 4.2.5.3.8.2The manufacturer shall provide the BTU rejection rate per hour for all models in this contract.3.9Noise3.9.1The overall noise level 12 inches in front of the work opening of the cabinet and 15 inches above the plane of the work surface at the vertical centerline of the cabinet shall not exceed 67 dbA, at a reference sound-pressure value of 20 micro-newtons per meter squared (re: 0.0002 dynes per centimeter squared) when measured with the background not over 57 dbA per Paragraph 4.2.7. In addition, there shall be no objectionable pure tone noise component present during the operation of the cabinet.3.10Vibration3.10.1The maximum displacement of the work tray of the cabinet shall not exceed 100 micro-inches, R.M.S., in any direction when the cabinet is operating at the nominal set point velocities, tested as per Paragraph 4.2.8.3.10.2The maximum field vibration limits for each centrifugal fan shall not exceed the following specified limits: RPM MILS DEFLECTION9001.0012000.7518000.50These limits shall apply to the top and side of the motor shaft/fan wheel connection and the fan scroll.3.11Leak Tight Construction3.11.1All air plenums including the exhaust air plenum, supply air plenums and supply air filter and fan plenum shall be leak tight as demonstrated by the pressure decay test or the alternative soap bubble leak test. This shall include welds, gaskets and all plenum penetrations. Testing requirements are described in Paragraph 4.2.1, NSF49-Annex A and Annex F.3.11.2Utility service outlets, as specified, and requiring penetrations through plenum walls or bulkheads, shall meet leak tightness test per Paragraph 4.2.1.3.12Labels3.12.1Restricted Substances Label: The cabinet shall have a permanently affixed (cemented) label with at least half inch-high letters colored white on a red background. The label shall have the following phrase: "DO NOT USE TOXIC, EXPLOSIVE, OR FLAMMABLE SUBSTANCES IN THIS CABINET. THE USE OF SMALL AMOUNTS OF CARCINOGENIC, TOXIC OR RADIOACTIVE SUBSTANCES MUST BE APPROVED BY THE OFFICE OF BIOLOGICAL SAFETY." This label shall be affixed and centered directly above the viewing window.3.12.2Manufacturer Label: The manufacturer shall install a label permanently affixed to the front of the cabinet where it will be clearly visible. The label shall be located approximately five feet above the base of the cabinet and shall contain the following information:(1) The supplier (manufacturer's) name and address(2) Cabinet type: Class II, Type B1(3) The cabinet model number(4) The cabinet serial number(5) NSF-49 certified down flow rate in LFPM, and test grid dimensions. For zone flow, see Paragraph 3.12.2.1(6) NSF-49 Certified face velocity rate in LFPM; Primary and secondary methods and traverse locations(7) Exhaust HEPA filter size, rating, and quantity (8) Supply HEPA filter size, rating, and quantity for both primary and secondary supply filters(9) Factory Certification/Manufacture Date3.12.2.1For cabinets designed with multiple velocity distributions in the work zone, the down flow rate shall appear as follows: (5) Certified supply filter airflow rate, LFPM3.12.3Decontamination Signage: The cabinet shall have a permanently affixed label with the following phrase: "THIS CABINET MUST BE DECONTAMINATED PRIOR TO ENTERING OR SERVICING FILTER AREAS, THE FAN/MOTOR EQUIPMENT OR BEFORE MOVING." The label shall be approximately 5 feet above the base of the cabinet with at least HALF-inch block letters white on a red background.3.12.4Field Certification Plate and Recertification Interval: The cabinet shall have a permanently affixed stainless steel, Class 304; No. 4 satin finish plate, minimum U.S.S. Gauge No. 26, 4 inches vertical by 5 inches horizontal. The plate shall be located directly below or to the side of the manufacturer's label detailed in Paragraph 3.12.2. This plate shall be used to affix subsequent field certification labels.3.12.5NSF-49 Seal: The cabinet shall display a current valid NSF 49 seal of certification to be located on a frontal surface. In the event that the cabinet has been verified by the university agent as passing the performance envelope data and has been independently inspected or is awaiting NSF 49 approval, the seal of certification is waived.3.12.6Initial Field Certification (IFC) Label3.12.6.1The cabinet shall have a manufacturer's IFC label affixed to the front horizontal and vertical center of the work zone sash, external side. The label shall be printed in at least 0.25 inch block letters and be removable after field certification.3.12.6.2The IFC label should have a white background with red letters and a red border frame.3.12.6.3The IFC label shall state: "Warning. This biological safety cabinet shall be field certified according to the latest edition of NSF 49, Field Performance Tests for Personnel, Environmental and Product Protection. This certification is a directive of the Institutional Bio-safety Committee."3.12.7Ground Fault Circuit Interrupter (GFCI) Label3.12.7.1All electrical outlets provided on or inside the biological safety cabinet shall be labeled with ground fault circuit interrupter (GFCI) stickers.3.12.8Sash Location Arrows: Laminated sash arrows, with white markings on red background, shall be provided on the left and right side of the sash at operating height position.3.12.9Operator Instruction Label3.12.9.1The supplier shall affix an abbreviated set of operator instructions to the cabinet detailing instructions on the startup, use, and shut down of the cabinet.3.12.9.2The operator instructions sign shall be plastic laminated and located 60 to 70 inches above floor elevation on the front panel of the cabinet.3.13Operations Manual and Service Video3.13.1One copy of the operations manual containing the following information shall be furnished with each biological safety cabinet. If an electronic version of this information is to be provided, instructions as to its location and how to access it shall be provided.(a) Unpacking procedure, purpose, location within the laboratory, cabinet function and description including the proper use of the optional UV lamp.(b) Instructions for installing, operating and performing preventive maintenance on the cabinet(c) Trouble shooting procedures(d) List of service parts (identified by supplier's part number) and quantity required for preventive maintenance purposes.(e) HEPA/ULPA filter - definition, chemical effects, filter life, and procedure for HEPA filter replacement(f) Decontamination procedure(g) An up to date wiring diagram of all electrical components shall be provided in the operations manual.(h) A hard copy of the test results for all of the Production Quality Control Tests listed in Section 4.2 shall be provided with each cabinet. A copy of the test report shall also be included in the operations manual. The hard copy provided with the cabinet shall indicate that it is for UW-EH&S use only. 3.13.2One copy of the manufacturer's operations manual for the prototype biological safety cabinet shall be submitted to the University biological safety officer or University Agent.3.13.3Service Video: The manufacturer shall have available upon request a video presentation of biosafety cabinet maintenance and operation.3.14Pressure Gauges, Blower Interlock, and Cabinet Operator Warning Systems, see 3.5.8.3.14.1Pressure gauges: The supplier shall provide two flush mount gauges to monitor the supply and exhaust filter negative air pressure (plenums). The filter gauges shall be located in the service center metal panel, one gauge labeled EXHAUST and one gauge labeled SUPPLY.3.14.2Airflow Monitoring and Cabinet Blower Interlock: The cabinet shall be provided with an automatic air flow monitoring system to alert cabinet operators by set point of a ventilation reduction in the owner supplied ventilation system. The airflow system shall have both audio and visual alarm mechanisms and be built into the service control center. The airflow monitor shall also serve as a blower interlock to turn off the cabinet internal blower in the event of a failure in the house exhaust system. Under normal conditions, the airflow monitor shall have a green lamp for normal, if air is deteriorating a yellow warning lamp, and a red lamp for low or no airflow condition. In red, the airflow monitor shall be programmed to activate an audio alarm. Audio shall sound at or below 80 dbA and turn off the cabinet blower. The operator shall be able to turn off the audio alarm, but the visual alarm shall remain on. 3.14.2.1The airflow monitor shall be designed to be field adjustable by the cabinet certifier.3.14.2.2The airflow monitor shall activate when the cabinet blower switch has been turned on and the airflow monitor will turn off when the operator turns the blower off.3.14.3Sash Alarm: A failsafe mechanism shall be provided to alarm when the cabinet window is raised above or lowered below the safe operating (8 inch) height. The alarm shall shut off when the sash is at the lowest point of travel (closed). The noise level of the alarm shall not exceed 80 db-A with a background sound level of less than 55 db-A. The sash alarm switch shall be low voltage 24V or less to reduce the risk of electric shock hazard to certifiers and cabinet operators.3.15Parts List and Required Parts Discount3.15.1The supplier shall provide a parts list by part name and part number for the contract year. The parts list shall be provided in the Operator’s Manual.3.15.1.1Parts price lists should be updated every year prior to the new contract year (renewal years included). The parts list shall be provided to the University Purchasing Department and the University Agent in electronic format.3.15.2The supplier shall have available, parts for each cabinet sold under the contract for at least ten years from the last production date of the cabinet model. This shall include but not be limited to motors, ballasts, PC boards, wiring, etc. Replaceable parts such as HEPA filters shall be available for 20 years from the date of BSC manufacture.3.15.3Replacement Parts and labor: The supplier shall agree to provide warrantee parts for no cost and no shipping charge, FOB UW Environment, Health & Safety Loading Dock for three years starting from the date of delivery at the job site. The UW-EH&S Engineering Technical Services, Biological Safety Cabinet Program and the University Agent shall have final authority to make the decision regarding warrantee adjustment and the supplier shall agree to this condition. In the event that any installer on the job, in the sole opinion of the University Agent, has damaged the safety cabinet, the installer shall be liable for replacement parts, shipment and the labor to install said parts and if necessary re-certification or replacement of any biological safety cabinet. Regardless of which person or contractor has actually caused the problem, the General Contractor shall have the final responsibility for payment of damages in the event a subcontractor or any job employee cannot be proven to be the source of the damages.3.15.4Parts Discount: Required: The manufacturer or supplier shall agree to sell replacement Class II Type B1, non-warranted parts under this contract for 25 percent off the retail price. Non-warranted parts will be warranted for (3) years.3.16Options and Requirements3.16.1Required-UW: Bypass armrest with pad – Paragraph 3.2.6.13.16.2Option: Adjustable Foot Rest – Paragraph 3.2.19.23.16.3Option: Direct Delivery to the laboratory – Paragraph 6.3.1.23.16.4Option: Reinforced work surface – Paragraph 3.5.2.4.73.16.5Required: Cable port on right sidewall – Paragraph 3.2.1.13.16.6Option: All stainless steel construction – Paragraph 3.2.15.13.16.7Required: Leak Tight damper – Paragraph 3.5.93.16.8Option: VHP – Paragraph 3.5.1.13.16.9Option: UV lamp at rear wall – Paragraph 3.6.43.16.10Option: High work zone: On request, the supplier shall offer the cabinet with an adjustable high work zone height 35 inches ±2 inches for taller height lab workers.3.16.11Option: 12 inch sash: On request, the supplier shall offer the cabinet with a 12 inch sash opening. This cabinet shall be NSF Listed.3.17Drawings3.17.1Upon request, the supplier shall provide drawings of this workstation detailing the entire front face of this workstation.3.17.2Upon request the supplier shall provide a plan view of this work station. 3.17.3PDF files of same may be sent as fulfilling this requirement; however the supplier shall provide “CAD”drawings if formally requested by the university agent3.17.4Drawings shall be provided in CD or DVD diskettes and will be used in the evaluation of the product or for the design and location of this product within the University Laboratory.4.0QUALITY ASSURANCE PROVISIONS.4.1Qualifications4.1.1Procedure for Obtaining Qualification Applicants submitting bids shall submit to the University of Wisconsin a statement on the applicant's willingness to furnish a Class II, Type B1 safety cabinet in conformance with this specification. The statement must also indicate that the equipment under bid conforms to all NSF 49 standards and will display a current NSF 49 seal or take exception to NSF49 as allowed under certain circumstances in this specification. As proof of compliance with the above statements the applicant mustagree to submit test results, if called upon, for a prototype model tested by NSF. If corrections and/or modifications have been made since the prototype tests by NSF, these changes shall be listed and detailed along with the test results.4.1.1.1UL and NSF Seals In the event that an individual purchase calls for an option that invalidates the UL or NSF Seal, the supplier shall note this in the drawing submittal in half inch block letters directly on the drawing, black on white: This design, if approved shall not be listed under UL and/or NSF seal because of user requirements.4.1.2Prototype Tests: The supplier shall conduct test procedures at the manufacturing facility for prototype models as outlined in the most current edition of NSF-49, Section 6 – Performance and Annex A. If requested by the Purchasing Department, the test results shall be provided in written form for review by the University Agent. NSF testing results may also be submitted but for an identical model provided under this specification. Alternate models may be rejected and the supplier given sixty days to execute this requirement and submit a complete testing report to the purchasing department.4.2Production Quality Control Tests. Each production biological safety cabinet unit shall meet the following required tests performed by the supplier on the cabinet at the factory. One signed factory test report, hard copy, shall accompany the operations manual for that cabinet. Additional tests may be specified under specific specifications for a particular cabinet. 4.2.1Pressure Decay/Soap Bubble Test NSF-49 ANNEX A4.2.2HEPA Filter Leak Test NSF-49 ANNEX A4.2.3Downflow Velocity and Volume NSF-49 ANNEX A4.2.4Inflow Velocity and Volume NSF-49 ANNEX A4.2.4.1Inflow velocity determination shall be by NSF-49 Annex A, Test Method A.9.3.2 and applicable Secondary Method4.2.5Temperature Rise Optional NSF-49-1992 ANNEX A4.2.6Lighting Intensity NSF-49 ANNEX A4.2.7Noise Level NSF-49 ANNEX A4.2.8Vibration NSF-49 ANNEX A4.2.9UV Intensity Test MDN-03-20104.2.10Electrical Leakage, Ground Circuit Resistance and Polarity NSF-49-1992 ANNEX A4.2.11Airflow Smoke Pattern Test NSF-49 ANNEX A5.0PREPARATION FOR DELIVERY5.1Packaging5.1.1All indicators, gauges and dials shall be covered with cushioning material conforming to PPP-C-843 and the cushioning material shall be secured in place with the tape conforming to PPP-T-60, Type II, Class 1.5.1.2All switch boxes, outlets, connections and drain-line openings shall be sealed with the tape specified in Paragraph 5.1.1.5.1.3Instruction books, leak tight damper assembly, a hard copy of the test report, and parts lists shall be packaged together and secured to the cabinet in a protected location, such as the work zone.5.1.4The work tray, sash, front perforated area, air and/or light diffuser, fluorescent light bulb(s), IV bar(s), and UV lamp(s) shall be secured in position by taping, tying, blocking or bracing to prevent movement during transit.5.1.5The transition collar from the exhaust filter plenum shall be covered to protect the exhaust filter from shipping damage.5.1.6The sash mechanism shall be secured to prevent window, cable and pulley breakage in shipment.5.2Packing5.2.1Each Class II biological safety cabinet shall be packed in a container conforming to PPP-B-621, Class 2, style optional; or to PPP-B-601, overseas type; or PPP-B-640, Class 2, Grad A, style optional. It shall be packed in a crate conforming to MIL-C-3744; nailed assembly, skid type base. The contents of the crate shall be blocked, braced, and anchored in accordance with MIL-C-104, and optionally waterproofed with a shroud extending to the base of the crate in accordance with the appendix to MIL-C-132. Strapping shall be in accordance with the appendix to the applicable container specification. APPROVED ALTERNATE: The cabinet shall be alternatively packed on a wooden skid rated for the shipping load, protected with cardboard walls and top with reinforcement members to face protect the front of the cabinet. The manufacturer shall be responsible for taping all moveable, unsecured cabinet components to protect against movement and breakage during transport.5.2.2The shipping container shall be marked on all four sides with warning labels not to drop the contents.5.2.3The entire shipping container shall be wrapped in 6 mil construction grade plastic sheeting and/or hardboard to protect against rain damage.5.2.4On Class II cabinets with a moveable window, the sliding assembly shall be braced with wood and taped. No movement shall occur on transit.5.2.5Building Address and Room Number Requirement: The cabinet shall be tagged with the building address and room number of the campus laboratory that the unit is going to be installed.6.0NOTES6.1Guarantee The supplier guarantees the Class II, Type B1 safety cabinet against defective material, workmanship and performance for three years, said guarantee to run from the date of delivery. The supplier agrees to furnish, without cost to the University, replacement of all parts which are found to be defective during the guarantee period. Cost of installation (labor and decontamination if necessary) of replacement parts and material shall be borne by the supplier, exclusive of transportation charges on returned parts.6.1.1Extended Limited Warrantee. The supplier warrantees the Class II, Type B1 safety cabinet against defective parts for three years from the date of delivery.6.1.2Filters and lamp bulbs are perishable and may not covered under 6.1.1 in the second and third years. The University Agent in conjunction with certification personnel will investigate filter and lamp parts to determine responsibility for replacement. The University will be the sole judge on requiring the guarantee on defective filters and lamp bulbs in the three year period; the supplier shall be consulted.6.1.3Contractors: Cabinet filters pre-loaded with construction debris in excess of 25 percent of the reserve cabinet blower capacity may be replaced by order of the University Agent who has the final authority in determining whether construction debris has been allowed to enter the cabinet work zone and contaminate the filters. The general contractor shall be responsible for any labor and parts replacement costs incurred in the replacement of the cabinet HEPA filters.6.1.4Contractors: Cabinet filters damaged with construction debris or labor, may be replaced by order of the University Agent who has the final authority in determining whether construction activities have resulted in damage to the cabinet. The general contractor shall be responsible for any labor or parts replacement costs incurred.6.1.5Replacement Parts Requirement: The manufacturer agrees to provide all parts at a 25% discount rate from retail cost. This shall include the certifier discount.6.2Qualification With respect to products requiring NSF 49 certification, awards will be made only for such products as have, prior to the bid opening date, been tested and approved for inclusion in the NSF 49 Products List, whether or not such products have actually been so listed by that date. The attention of suppliers is called to this requirement, and suppliers are urged to arrange to have products that they propose to offer to the University tested for qualification in order that they may be eligible to be awarded contracts or orders for the products covered by this specification. Information pertaining to qualification of products covered by this specification may be obtained from the UW-Environment, Health & Safety Department, University of Wisconsin-Madison, 30 E. Campus Mall, Madison, Wisconsin, 53715.6.3Inspection and Certification of Cabinet Delivered FOB Site6.3.1Notification of Delivery Supplier shall notify the University of Wisconsin-Madison – Office of Biological Safety at 608-263-2037 or Engineering Technical Services (30 E. Campus Mall, Madison, Wisconsin 53715, telephone: 608-262-1809) 10 days prior to date of expected delivery at designated FOB site Madison, Wisconsin.6.3.1.1Building Address and Room Number: Required: Attached to the safety cabinet underneath the packing plastic or written on cardboard shall be a paper label attached with a string. The label shall have the room number and building or address that the cabinet is being delivered to in order to assist university loading dock personnel, certifiers, and moving and transfer personnel in the final resting location of the cabinet. Current program needs for data management require that the location of the biological safety cabinet be identified by the manufacturer PRIOR to shipment.6.3.1.2Direct Delivery Option to the Laboratory: Alternative shipment: FOB Room: The supplier upon request shall arrange delivery of the safety cabinet to the lab space of the designated room at the University. The supplier shall therefore list as an option direct delivery cost to the laboratory and assume all delivery and moving liability.6.3.2Dock Inspection User/Purchaser will notify the UW-Environment, Health & Safety – Engineering Technical Services group of the cabinet's arrival. Gross inspection will be made for punctures, breakage or other signs of damage to packaging material and/or cabinet. Notation will be made of defects observed. Suppliers will be promptly notified of any defects or deficiencies in the cabinet. Following disassembly of outer packing and further inspection for damages, completeness of cabinet and options, authorization (by the UW-Environment, Health & Safety – Engineering Technical Services) will be given to the user to arrange for transfer to the designated laboratory. The site, utility proximity and other installation considerations for the cabinet will have been previously arranged by the user and the Engineering Technical Services/Office of Biological Safety.? NOTE TO CUSTOMERS AND RECEIVING PERSONNEL: ALL UNIT SHIPMENTS ARE MONITORED DURING TRANSIT. UNIT SHIPMENTS CONTAIN A DROP (N) TELL IMPACT INDICATOR TO IDENTIFY IN TRANSIT SHIPMENT DAMAGE AND CONCEALED IN TRANSIT SHIPMENT DAMAGE. ALL SHIPPING CONTAINERS WILL BE CLEARLY MARKED.6.3.2.1Hidden Damage The University shall not be liable for hidden damage. It will be the responsibility of the supplier, shipper and/or moving and transfer agent to correct any hidden/undisclosed damages. The University shall notify the interested party(s) of any damage that is discovered. The cabinet supplier shall have the primary liability for resolving hidden damages with all parties concerned including replacing parts, the costs for labor or the cabinet itself.6.3.2.2Replacement Parts or Cabinet The cabinet is a custom made unit manufactured to controlled University specifications. Therefore if standard replacement parts are called for the supplier shall have 14 days to ship the parts to the University. If custom made parts or the entire cabinet is damaged, the supplier has 60 days to replace these parts or cabinet.6.3.2.3Extreme Needs Situation on Damaged Goods In an extreme needs situation, the University reserves the option to replace the damaged goods with non-specification grade parts or entire cabinet assembly. In this extreme situation standard supplier terms as listed in the supplier’s catalog will be honored. UW Purchasing Department will contact the supplier and authorize to proceed.6.3.3Certification Tests Upon installation, cabinet certification tests (paid by user) will be performed on the installed cabinet by UW-Environment, Health & Safety – Engineering Technical Services. These tests will follow those outlined in NSF49 Annex F, both in scope and method of performance. In addition, a filter-load test to determine fulfillment of the "10/200" requirement as stipulated in Paragraph 3.5.6.3 may be made by the Engineering Technical Services group on selected cabinets if there is some question of the fan/motor performance graphs cited in Paragraph 3.1.1. Cabinet site tests will be compared to results of factory control tests, which accompany the operator's manual for the cabinet supplied.6.3.3.1The required initial certification has been mandated by the University Institutional Biosafety Committee for all biological safety cabinets, whether purchased for non-hazardous or bio-hazardous projects. The certification shall be performed by the UW-Environment, Health & Safety – Engineering Technical Services group under the direction of the University Agent or other personnel who are NSF 49 Accredited for field testing of biological safety cabinets. Each safety cabinet will be tested and certified.6.3.3.2Contact the UW-Environment, Health & Safety – Engineering Technical Services group at 608-262-1809 for certification and inspection service.6.3.4Penalties for Noncompliance Labor for minor corrections needed to achieve certification beyond one hour normally allotted will be charged to the supplier at the rate of $200.00 per hour. Failure of the cabinet to meet any of the tests specified (unless only minor correction suffices) or structural material requirements shall constitute grounds for rejection. The cabinet will be returned at the supplier's expense unless remedial action (including parts and labor) is provided within 30 days. This corrective action must be appropriate and satisfactory in the opinion of the Engineering Technical Services group and purchaser and enable the cabinet to pass the specified certification tests. At the option of the supplier corrective labor necessary to satisfy the performance can be performed by the Engineering Technical Services group at the rate stipulated above ($200.00/hour).6.4Fabrication and Delivery Time Once drawing approval is given on a cabinet, the supplier shall commence fabrication within thirty days. Shipment should be made within sixty days of drawing approval. The supplier shall complete an individual cabinet order no later than two months from the time the drawing approval is issued. Two months from the time of approval to shipment from the supplier’s loading dock is considered the maximum time and shall not occur more than three times per twelve month period. The supplier shall contact the University Agent in order to clarify any conflicts in shipping and specification compliance to insure acceptable delivery time.6.4.1 Inspection and Certification of Cabinet Delivered FOB Laboratory: The University requests that the supplier prepare an optional cost for delivery FOB laboratory room. Shipping Inspection will be during certification in the final “AS IS” location.APPENDIX AGRAPH 1Example Motor Performance Graph (Specification 3.1.1.1)1133475-79883000MOTOR MANUFACTURER: MOTOR MODEL NUMBER:MOTOR HORSEPOWER: (HP) CAPACITOR SIZE: (MFD)T= MOTOR TORQUE OUNCE FEETEC= VOLTAGE ACROSS CAPACITORT - OUNCE FEETx MULT. I= MOTOR AMPERESEC -x MULT. RPM= REVOLUTIONS PER MINUTEI-x MULT. MFD= MICROFARADAPPENDIX AGRAPH 2Example Fan Motor Performance Graph (Specification 3.1.1.2)3.1.1.2.4.4 Clean filters with cabinet air velocities required under Paragraph 3.7. QT = CFM, Motor Speed = RPM, Filter Pressure Drop = IWC3.1.1.2.4.5 Loaded filters to produce a 10 percent reduction in total airflow. QT = CFM, Motor Speed = RPM, Filter Pressure Drop = IWCFAN MANUFACTURER: FAN MODEL NUMBER: MOTOR MANUFACTURER: MOTOR MODEL NUMBER:OPERATIONAL TORQUE DEFINED BY THE EXPRESSION:T2 = T1/(EC1/EC2)e2T2 = OPERATIONAL TORQUE - OUNCE FEET T1 = TORQUE AT 115 VOLTS AC-OUNCE FEET EC1 = 115 VOLTS AC201930037846000EC2 = OPERATIONAL VOLTAGEQT=FAN AIRFLOW-CFM-STANDARD AIR SP=FAN STATIC PRESSURE-IWC IWC=INCHES WATER COLUMNRequired minimum load factor is 50% not 100% as reported in graphAPPENDIX BFIGURE 1Console Model, Class II, Type B1 (Taken from Paragraph 3.3)NOT TO SCALEDIMENSIONAL REQUIREMENTS IN INCHES Paragraph 3.3A (RANGE)B (RANGE)C (RANGE)D (RANGE)E (RANGE)F (RANGE)G (RANGE)H (RANGE)4 ft console54 (53-55)34 (33-35)76 (75-80)46 (45-46)24 (23-25)26 (25-27)94 (93-97)32 (31-33)6 ft console78 (77-79)34 (33-35)76 (75-80)70 (69-71)24 (23-25)26 (25-27)94 (93-97)32 (31-33)Knee Space 12 (11-13) ................
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