Is: 3177

IS 3177 : 1999
Edition 3.2 (2003-07)
( Reaffirmed 2006 )

Indian Standard

CODE OF PRACTICE FOR ELECTRIC OVERHEAD TRAVELLING CRANES AND GANTRY CRANES OTHER THAN STEEL WORK CRANES
( Second Revision )
(Incorporating Amendment Nos. 1 & 2)

ICS

53.020.20

© BIS 2004

BUREAU

MANAK BHAVAN , 9 BAHADUR SHAH ZAFAR MARG NEW DELHI 110002

OF INDIAN

STANDARDS

Price Group 15

Cranes, Lifting Chains and Related Equipments Sectional Committee, HMD 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 testing of electric 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. 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