scope:

This Standard specifies the limiting and indicating device concerning the load, motion, and function suitable for the targeted environment for tower cranes specified in JIS B 0146-1. These devices give operation information to operators or other persons involved according to the limitation and indication of the operating motion and function.

It is not applicable to end stops such as buffers used to stop trolleying, travelling or derricking movements, nor to erection, dismantling operations or the changing of a crane's configuration.

General requirements of limiting and indicating devices related to the operation and function of tower cranes are given in JIS B 8827-1.

NOTE: The International Standard corresponding to this Standard and the symbol of degree of correspondence are as follows :

ISO 10245-3 : 2008 Cranes - Limiting and indicating devices - Part 3 : Power cranes (MOD)

The symbols which denote the degree of correspondence in the contents between JIS and the corresponding International Standard are IDT (identical), MOD (modified) and NEQ (not equivalent) according to ISO/lEC Guide 21-1.