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

1 Disclosure to Promote the Right To Information Whereas the Parliament of India has set out to provide a practical regime of right to information for citizens to secure access to information under the control of public authorities, in order to promote transparency and accountability in the working of every public authority, and whereas the attached publication of the Bureau of Indian Standards is of particular interest to the public, particularly disadvantaged communities and those engaged in the pursuit of education and knowledge, the attached public safety standard is made available to promote the timely dissemination of this information in an accurate manner to the public. 1 + , 1 + 0 1 ' 5 . Mazdoor Kisan Shakti Sangathan Jawaharlal Nehru The Right to Information, The Right to Live Step Out From the Old to the New . 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].

2 ! $ ' + - . Satyanarayan Gangaram Pitroda Invent a New India Using Knowledge . ! > 0 B .. Bhart hari N ti atakam Knowledge is such a treasure which cannot be stolen . IS 3177 : (ReaffinDed 2004). ' '! cf) 2/ 117 rt Cfj . ~ ~ -&-i 3lffiClT fmTqft ~ em;ft ~~~3tR~cp'T. ~~. (gff'?7 pRT~). 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 SIS 1999. BUREAU OF INDIAN STANDARDS. MANAK BHAVAN, 9 BAHADUR SHAH ZAFAR MARG. NEW DELI~I 110002. April 1999 . 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. ( ). [ Page 2, claus (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.]

3 MU be applied.'. (Pllge 3, Fig. 2 ) - Read dimeasion 'L ' for dimension '1'. (Page S, Table 1) - Substitute ' '!or '150' in col 2 against M7. (Page S, clause ) - ~. Substitute ' ' for ' ' under Rbi. ( Page 9, clause ) - 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 times of the weight of book block without distortion in accordance witb IS 13870 (part I).

4 '. (PaB~ 10, clause ) - 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 apu,lUItioll/or 'd' ) - Substitute 'dwmcter of the rope, in mm' for the existi. matter. (Page 11, claus , r"st JNlNlgrtlplt ) - Substitute ' ' for '7 A-" . 1. 1-51 BISINDI2008. Amend to IS 3177 : 1999. W. (Page 13, clause ) - Delete D = or, and a substitute the following for the existing formula: Pmean x Cdr x CsC. D=. a x ebb x Cap where D = tread diameter of the wheel in mm;. P m ean = mean wheel load in newtons;. A = useful width of ra il;. Cdf = duty factor for the appropriate mechanism class as defined in ;. Cbh = hardness factor for the wheel material. For values, refer Table 9. Here wbeel hardness Bhw as calculated in 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 ; and C sp co-efficient depending on the speed of rotation of the wheel as defined in Table 10.

5 ( Page 16, clause , second paragraph) - Delete 'steel' from tbe first line. (Page 17, clause ) - Substitute 'or' for 'of' in first line of sentence. (Page 17, clause ) - 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!. , (ITSl paragraph, third sentence) - Substitute 'or'. for ;of'. 2. 1-51 BIS/ND/2008. Amend to IS 3177 : 1999. ( Page 25, clause l!~ ) - SutRitute the follo\ving for the first serseree: 'The provision of overloed protection shaD be with adjustable inverse time log overtoad release.'. (Page ~, clause ,{ust paragraph)- ~Iete tIE last serseree, [Page31, (a) ani (b) ] -SutEtitute '(]ass' for 'sizes', (Page 32, clause ) - SutRitute '20 'for '19'. (Page 34, Table 17) - SutRitute 'wilhoulawu' 'for 'wich CO'Ja" in column 2 URIer IP 54. [Page43, clause (a),btd test ) -Subititute '50' for '5'.)}

6 [Page43, clause (b), load nt }-SutNitute '100' fa- '125.'. Add ' Load Test (c) Losd the ~ nntion with 125 pereera of rated capecity, lift the btd for 1M Ir~ and then lower ~ bad'. ( Page ~ clause Cl ) - Subititute 'Cd( 'for ' '. (Pages 52awJ53, )-In factoredf .substinne '7A3' for ' '. (Page 53, Table 20B ) - SutRitule the f~ table for tbe existing;. Table 208 Reamtmended Cyclk Duration Factor and Starting Class (Clause e-n MecbaoiYa Class Duty Cycle Numbft- Recomm~ndedCycUc S lartinc Clau ( C ). of Cyclic Class (C) Duntion Factor Equivalent Cydft!hour, percent percent S larts/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 3001600. cycles 100. I-51 BISIND/2008 3. Amend to IS 3177 : 1999. ( Pages 53 and 54, Anna C, clause ) - 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 ).))]

7 Briel. Serrice Trolley Senke Without Pluuilll I WithPlVng I ( Page 54, clause ) - ' Substitute ' ' for ' ' ( under CdC) and ' ' [oro". ' (under Rw1). (MED 14). 4. I-51 BIS/ND/2008. AMENDMENT NO. 2 JULY 2003. TO. IS 3177: 1999 CODE OF Practice FOR Electric . Overhead TRA VELLING CRANES AND GANTRY. CRANES OTHER THAN STEEL WORK CRANES. ( Second Revision). [ Page 10, clause ( see also Amendment No. I ) J - Substitute the following for Zp: 'Zp = minimum practical coefficient of utilization. For normal condition Zp shall be taken equal to for M I to M8 other than hot mill duty cranes. Zp shall be taken equal to 5 for hot mill duty cranes.'. r Page 13, clause ( see also Amendment No. I ) ] - Substitute the following for the existing formula: Pmean x Cdf x Csf D=. a x Chh x C~sp ( Page 54, Annex C ) - Substitute explanation for notation 'N' for existing: 'N = mechanical efficiency of gearing. For spur and helical gears, efficiency to be taken as per reduction. For hardened and ground gears, efficiency to be taken as per reduction.]

8 '. (MED 14). 2-51 BIS/ND/2008. Cranes. LiftinS RelatedEquipmaall Sectioaal Coauniaee, HMO 14. FOREWORD. This Indian Standard ( second Revision) was adopted by the Bureau of Indian Standards, after the draft finalized by the Cranes, Lifting Chains and Related Equipments Sectional Committee had been approved by the Heavy Mechanical Engineering Division Council. This standard covers mechanical and electrical aspects related to design, manufacture, erection and tcsting ofelectric Overhead travelling cranes and gantry cranes used in hazardous areas like Gas Group 2c. Electrical motors and Electric thruster unit for brakes, limit switches, Pendant push button station and panels shall be of flameproof suitable for Gas (Group 2c). An attempt is made here to 'include provisions: a) to bring this standard in line with the International Standards, b) to keep higher factor of safety for hoisting mechanisms compared to travelling mechanisms which may reduce cost of cranes without sacrificing safety, and c) to help standardization, as far as possible, relating requirements for components to basic duty factor for class of mechanisms.

9 While preparing this standard assistance has been derived from various Indian, British, DIN, FEM and ISO. standards to bring this standard in line with the International Standards. As followed in the International Standards, structural provisions for cabin, walkways and means of access are not included in this standard. It is proposed that the same should be added in IS 807. In line with this standard and new classifications now adopted, IS 807 should be modified. Provisions in IS 807 for allowable stresses, deflection criteria, wheel base to span ratio and tolerances on spans, wheel alignment, etc, be modified to bring the-standard in line with International Standard. The new classification of cranes now coming into effect and the classification presently in use can approximately be compared as follows: Old Equivalent New Classification I M3. II MS. III M7. IV M8. For the purpose of deciding whether a particular requirement of this standard is complied with, the final value, observed or calculated, expressing the result of a test or analysis, shall be rounded off in accordance with IS 2 : 1960 'Rules for rounding off numerical values (revised)'.

10 The number of significant places retained in the rounded off value should be the same as that of the specified value in this standard. IS 3177 : 1999. Indian Standard CODE OF Practice FOR Electric Overhead . TRAVELLING CRANES AND GANTRY CRANES. OTHER THAN STEEL WORK CRANES. ( Second Revision). 1 SCOPE. This codecoversmechanical, electrical, inspection and testing requirements relating to the design, manufacturing and erection of Electric Overhead travellingcranes, portal-and semi - portal cranes, single girder, double girder or mono-box type (see Fig. I). It does not cover steel work cranes which are covered in IS 4137 : 1985 and new classification for the crane as a whole, which has been defined as from No. AI, A2, A8 and crane mechanism has beendefined as from Nos. MI, M2, .. M8 according to IS 13834 (Part 1) : 1994. 2 REFERENCES. The Indian Standards listed in Annex Fare necessary adjuncts to this standard. 1C Crane 1A Top Running Crane (Double Girder). 1D Goliath Crane (With Cantilevered Extension).