Why are We Here? The What and Whys of Vacuum Excavation
[Pages:12]3/15/2017
Precision Excavating: The What and Whys of
Vacuum Excavation
Ben Schmitt & Ron Spoerl Session #T35
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Why are We Here?
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Introduction
? Ben Schmitt Vactor Manufacturing Product Manager
? Ron Spoerl Hawk Construction LLC
What is Vacuum Excavation?
? Non-Mechanical ? Non-Destructive ? Safely Visually Locate ? Precise Excavation ? Minimally Disruptive
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Why are We Here?
"In Walnut Creek, California on November 9, 2004, a petroleum pipeline carrying gasoline to San Jose, California, owned and operated by Kinder Morgan Energy Partners was
$90,000,000 IN FINES AND struck by a backhoe used by Mountain
Cascade Inc., a contractor operating in the construction of a water pipeline for the East
LAWSUIT SETTLEMENT Bay Municipal Utility District. A massive
gasoline spill was subsequently ignited, resulting in an explosive fireball that caused the deaths, by burns, of four workers and one supervisor and the severe injury of five others. A Kinder Morgan worker had misread an as-built map, and had incorrectly marked the pipeline's route before the accident."
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Is Vacuum Excavation New?
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Vacuum Excavation History
? 1960's Vactor ExcaVACtor ? Sewer Cleaners Adapted in 70's ? 80's ? First Dedicated Machines in 80's for
Canadian Oilfields ? Mainstream in the late 1990's
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Why Vacuum Excavate?
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Why Vacuum Excavate?
Why Vacuum Excavate?
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Why Vacuum Excavate?
Why Vacuum Excavate?
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Not All Hits Result in a Fireball
Not All Hits Result in a Fireball
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Not All Hits Result in a Fireball
News Travels Fast!
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Not All Hits Result in a Fireball
Why Do They Happen?
? Electronic Locates are Often Inaccurate
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Why Do They Happen?
Why Do They Happen?
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Why Do They Happen?
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Why Do They Happen?
> 2.5 MILLION MILES IN US!
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Why Do They Happen?
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Natural Gas Distribution Disruption
Significant Instances
Property Damage
70 60 59
64 66 60
$80,000,000 $70,000,000
52 50
$60,000,000
2015 AVERAGE $50,000,000
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INCIDENT ~ $413,000! $40,000,000 $30,000,000
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$20,000,000
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$10,000,000
0
$0
2011 2012 2013 2014 2015
2011 2012 2013 2014 2015
Source:
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Google Fiber Video
Root Cause Analysis
Source: States Requiring Hand Dig or Soft Dig in Tolerance
Zone
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Source:
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Affected Utilities
? Over 19 million miles of buried utilities in Water, 1% the United States
? 288,346 known strikes in 2015!
That's one every 2 minutes! 5% increase from 2014
Tele com, 50%
Cable, 11% Electric, 8%
Natural Gas, 30%
Sewer, 0% Source: 2015 CGA DIRT Report 26
What They Think...
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Root Cause
Other (6%)
Locating Practices NOT Sufficient (17%)
Notification NOT Made (30%)
Excavation Practices NOT Sufficient (46%)
Notification Practices NOT Sufficient (1%)
Source: 2015 CGA DIRT Report 27
What We Do
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Root Cause Analysis
50%
Percent of Damage by Excavation Type
45% 43.2%
40%
35%
30%
26.6%
25%
20%
15%
10%
7.3%
5%
0.2%
0%
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Advantages of Hydro Excavation
? Can Dig in Virtually All Soils ? Can Dig in Frozen and Hard Soils ? Water is a Lubricant ? Eliminates Sandblasting Effect ? Eliminates Fugitive Silica Dusts ? Reduces Static Hazard ? Varied Water Pressure and Flow ? Can be used for Alternate Applications ? Highly Productive in Virtually all Soil
Conditions
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Root Cause Analysis
Shovel Damage
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Advantages of Air Excavation
? Air is Limitless ? On-Demand Generation ? Non-Conductive ? Lighter Weight Unit ? Faster Excavation in Loose Soil ? Dry Spoils for Backfill ? Drought Proof
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Root Cause Analysis
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Advantages of Vacuum Excavation
? Jobsite Safety ? 100% Verification of Utility ? Non-Visual Utility Locating Methods are Often Inaccurate ? Much Faster than Manual Excavating Methods (Hand Digging) ? Versatile ? Equipment can be used for many Applications ? Easily Reach Hard to Reach Areas ? Reduces Landscape Reconstruction ? Improves Public Perception ? Reduces Risk with Non-Destructive Methods ? Safety as a Value Proposition ? Reduces Job-Site Congestion ? Reduces Operator Fatigue
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Competitive Advantage
Excavate in Hard to Reach Areas
? Easily Access Remote Locations ? Minimal Disruptions ? Does Not Damage Surrounding Area
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What Can You Do With A Vacuum Excavator
? Light Pole Installation ? Directional Drilling Mud Recovery ? Potholing/Daylighting ? Safe Excavation around Utilities ? Water Main Repair ? Pit Cleaning (Car Wash, Elevator, etc.) ? Electrical Fault Repair ? Fence Installation ? Telephone Pole Installation and Removal ? Anode Replacement ? Large Excavations ? Water Valve Exercising ? Water Valve Replacement ? Gas Line Repair/Shutoff ? Fire Hydrant Maintenance ? Excavation around Tree Roots ? Spill Cleanup ? Fiber Optic Repair ? Sand Filtration System Cleanout ? Vacuum Roof Rock
? Valve Box Cleanup ? Catch Basin Cleaning ? Portable Toilet Cleanup ? Recovery of Material ? Cleaning of Lateral Lines ? Lift Station Cleaning ? Culvert Cleanout ? Utilize as a Water Truck ? Natural Gas Extraction ? Cathodic Protection ? Service Cut-Off ? Connecting Service Tee or Lateral ? Pipeline Inspection ? Pressure Testing ? Slot Trenching ? Frozen Ground Excavation ? Telephone Line Repair ? Vault/Hole Digging ? Window Well Installation ? And More!
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Excavate in Hard to Reach Areas
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Water Main Repair
? Minimal Ground and Material Removal ? Can Dig in Muddy and Wet Conditions ? Water Mains are often Located Near Other
Utilities ? Repair without Shutting the Water Off ? Reduced Traffic Disruption
Excavation Around Tree Roots
? Fast and Efficient ? Non-Destructive to Tree Roots ? Mandated by some Cities
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Excavation Around Tree Roots
Surface Preparation
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Prevent Cross Bores
Contain and Transport Material
Source: People's Gas
Source: Cross Bore Safety Association 44
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Utility Pole Installation/Removal
? Not All Utility Poles are Clear
Vacuum Roof Rock
Underground Focus ? Volume 26 Issue 1
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Source: Great Lakes Power Vac
Source: Dunn Service Group 48
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