1 Scope
This part of GB/T 24818 establishes the general requirements for access to control stations and other areas of cranes as defined in GB/T 6974.1, during normal operations, maintenance, inspection, erection, dismantling and emergency. It also deals with guards and restraints in general, concerning the protection of persons on or near the crane with regard to moving parts, falling objects or live parts.
The particular requirements relating to access, guards and restraints for the various types of cranes and lifting appliances are given in GB/T 24818.3, GB/T 24818.5 and ISO 11660-2.
In some cases, the particular requirements may not comply with the general requirements. Different dimensions can be permitted provided an equivalent degree of protection is achieved.
2 Normative References
The following normative document contains provisions which, through reference in this text, constitute provisions of this part of GB/T 24818. For dated references, subsequent amendments to, or revisions of, any of these publications do not apply. However, parties to agreements based on this part are encouraged to investigate the possibility of applying the most recent edition of the normative document indicated below. For undated references, the latest edition of the normative document referred to applies.
GB 5226.2 Safety of Machinery — Electrical Equipment of Machines — Part 32: Requirements for Hoisting Machines (GB 5226.2-2002, IEC 60204-32:1998, IDT)
GB/T 6974.1 Cranes — Vocabulary — Part 1: General (GB/T 6974.1-2008, ISO 4306-1:2007, IDT)
3 Terms, Definitions and Symbols
3.1 Terms and definitions
Foreword II
1 Scope
2 Normative References
3 Terms, Definitions and Symbols
4 Access
5 General Requirements
6 Stairs and Stepped Ladders
7 Rung Ladders and Footholds
8 Hoop Guards
9 Walkways, Inclined Walkways, Platforms and Manholes
10 Handholds, Handrails, Intermediate Guard-rails and Side Protection
11 Minimum Free Space for Walkway and Inclined Walkway
12 Hatch
13 Guards and Restraints
14 Electrical Guarding
Annex A (Informative) Examples of Surface Considered to be Slip-resistant
Bibliography
