IS 3177 (1999): Code of Practice for Electric Overhead Travelling ...

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IS 3177 (1999): Code of Practice for Electric Overhead Travelling Cranes and Gantry Cranes other than Steel Work Cranes [MED 14: Cranes, Lifting Chains and Related Equipment]

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IS 3177 : 1.999

(ReaffinDed 2004)

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Indian Standard CODE OF PRACTICE FOR ELECTRIC OVERHEAD TRAVELLING CRANES AND GANTRY CRANES

OTHER THAN STEEL WORK CRANES ( Second Revision)

Second Reprint SEPTEMBER 2008

(Including Amendment No. J & 2)

ICS 53.020.20

April 1999 .

? SIS 1999

BUREAU OF INDIAN STANDARDS

MANAK BHAVAN, 9 BAHADUR SHAH ZAFAR MARG NEW DELI~I 110002

Price Group 15

AMENDMENT NO. 1 DECEMBER 2000 TO

IS 3177: I " , CODE OF PRACTICE FOR ELECTRIC OVERHEAD TRAVELLING CRANES AND GANTRY

CRANES OTHER THAN STEEL WORK CRANES

( S.COIIIIRnisiola )

[ Page 2, claus? 3.Z (b?) - Substitute the following for the existiag matter:

lib) Ambient temperature should be oOe tel 40?C aDd iftbe service conditions

those beyond this, suitable derating !acton .MU be applied.'

(Pllge 3, Fig. 2 ) - Read dimeasion 'L ' for dimension '1'.

(Page S, Table 1) - Substitute '1.4'!or '150' in col 2 against M7.

(Page S, clause 7.3.1 ) - Substitute '7.2' for 'I.z' under Rbi. ~

( Page 9, clause 1.1.%) - Substitute the following for the existiDg matter:

'For loads up to and induding 50 t, Shank type plain books be used unless otherwise specified by tbe purchaser. For 1000ds of SO t and over, boob of Rams hom type or triangular lifting eyes are to be preferred where there is ? chance of fouling of book and the 'risk of displacement of load during boistiDg and for lowering 'e' type hook shall be used. Hook witb book latch is to be provided with closing fingers to prevent slippage of load. However an option can be given to the purchaser on wbetber book is to be provided with closing fingers or book latch. In tbis case the biage lug for the closing- finger shall be forpd with tbe book. The finger shall be capable of taking load equal to 1.5 times of the weight of book block without distortion in accordance witb IS 13870 (part I).'

(PaB~ 10, clause 1.3.J ) - Substitute the following for Zp:

= ~Zp minimum practical co-efficient of utilization. For DOrm.) condition Zp shall

be taken equal to 6 for M7 aDd M8, Zp == 4 for Ml to M6.'

(Page 11, clause 1.4.6 apu,lUItioll/or 'd' ) - Substitute 'dwmcter of the rope, in mm' for the existi. matter.

r"st (Page 11, claus? 1.5.%, JNlNlgrtlplt ) - Substitute '1.4.6' for '7A-" .

1

1-51 BISINDI2008

Amend No.1 to IS 3177 : 1999

1.5 W

= (Page 13, clause 8.6.6 ) - Delete D

or, and

a

substitute the following for the existing formula:

where

Pmean x Cdr x CsC D=

1.5 a x ebb x Cap

D P mean A

Cdf Cbh

= tread diameter of the wheel in mm;

= mean wheel load in newtons; = useful width of ra il; = duty factor for the appropriate mechanism class as defined in 7.4.3; = hardness factor for the wheel material. For values, refer Table 9.

Here wbeel hardness Bhw as calculated in 8.6.3 sball be used even if wheel rim if hardened more for longer wheel life;

Csf

safety factor depending on the material used as defined in 7.4.3; and

C sp

co-efficient depending on the speed of rotation of the wheel as

defined in Table 10.

( Page 16, clause 8.7.1, second paragraph) - Delete 'steel' from tbe first line.

(Page 17, clause 8.8.2) - Substitute 'or' for 'of' in first line of sentence.

(Page 17, clause 8.8.3 ) - Substitute the following for tbird paragraph:

'The gearbox mounting shall be machine cut, seated and positively located on machined surface.'

( Page 21, Table 12 ) - Substitute '240' for '60' in column 3 against 'ae Magnets'.

( Page 25, clause .1!.2.2, (ITSl paragraph, third sentence) - Substitute 'or' for ;of'.

2

1-51 BIS/ND/2008

Amend No.1 to IS 3177 : 1999

( Page 25, clause l!~ ) - SutRitute the follo\ving for the firstserseree: 'The provision of overloed protection shaD be with adjustable inverse time log overtoad

release.'

(Page ~, clause IS.J.4,{ustparagraph)- ~Iete tIE last serseree, [Page31,clou.se 20.1(a)ani (b) ]-SutEtitute '(]ass' for 'sizes',

(Page 32, clause1Z.3) - SutRitute '20 'for '19'.

(Page 34, Table 17) - SutRitute 'wilhoulawu' 'for 'wichCO'Ja" in column 2 URIer IP 54.

[Page43, clause21.3 (a),btd test ) -Subititute '50' for'5'.

[Page43, clause 21.3 (b),load nt }-SutNitute '100' fa- '125.'. Add '28.J Load Test (c) Losd the ~ nntion with 125 pereera of rated capecity, lift the btd for 1M Ir~ and then lower ~ bad'.

( Page ~ clauseCl ) - Subititute 'Cd( 'for 'Cc.-'.

(Pages 52awJ53,cIauseC.1 )-In factoredf .substinne '7A3' for '6.4.3'. (Page 53, Table20B ) - SutRitule the f~ table for tbe existing;

Table 208 Reamtmended Cyclk Duration Factor and Starting Class

(Clause e-n

MecbaoiYa Class

Duty Cycle NumbftofCyclic Class (C) Cydft!hour, percent

Recomm~ndedCycUc Duntion Factor percent

Slartinc Clau ( C )

Equivalent Slarts/bour

Mt

Upto5

25

90

cycles 25

M2

Up loS

25

90

cycles 2S

M3

10 to 15

25

150

cycles 40

M4

16 to 20

2S

150

cycles 40

MS

2110 30

25/40

tSOI3OO

cycles 60

M6

31to 40

40

300

cycles 60

M7

41 to SO

60

300

cycles 100

M8

5110 60

60

cycles 100

3001600

I-51 BISIND/2008

3

Amend No.1 to IS 3177 : 1999

( Pages 53 and 54, Anna C, clause C-Z.z ) - For explanation of T, delete last two lines after the explanation and substitute Table 21 B with tbe following:

Table ZIB Values or Service Factors

(CItJuu C?l.%)

Briel. Serrice F.dor

Without Pluuilll

I

WithPlVng

0.95

I

1.00

Trolley Senke F.ctor

1.06

( Page 54, clause C-Z.l ) - ' Substitute '7.4.3' for '6.4.3' ( under CdC) and '7.3.1' [oro".3.1' (under Rw1).

(MED 14)

4 I-51 BIS/ND/2008

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