1 Scope
This Standard establishes general principles for the design and application of safety signs and hazard pictorials permanently affixed to cranes as defined in GB/T 6974.1. This Standard outlines safety sign objectives, describes the basic safety sign formats, specifies colours for safety signs, and provides guidance on developing the various panels that together constitute a safety sign.
2 Normative References
The following normative documents contain provisions which, through reference in this text, constitute provisions of this Standard. For dated references, subsequent amendments to, or revisions of, any of these publications do not apply. However, parties to agreements based on this Standard are encouraged to investigate the possibility of applying the most recent editions of the normative documents indicated below. For undated references, the latest edition of the normative document referred to applies.
GB/T 6974.1 Cranes — Vocabulary — Part 1: General (GB/T 6974.1-2008, ISO 4306-l:2007, IDT)
3 Objectives of Safety Signs
3.1 The objectives of a safety sign are to
— Alert persons to an existing or potential hazard
— Identify the hazard
— Describe the nature of the hazard
— Explain the consequences of potential injury from the hazard
— Instruct persons about how to avoid the hazard
3.2 In achieving these objectives, a safety sign should be distinctive on the crane, should be in a clearly visible location, should be protected to the greatest extent practicable from darnage and obliteration, and should have a reasonably long life expectancy.
3.3 Safety signs and hazard pictorials can be located on the machine or in operating service instruction manuals. Safety signs and hazard pictorials located on the machine shall be located near the location of the hazard or the control area to prevent the hazard.
3.4 Care shall be taken to prevent excessive need/use of safety signs and hazard pictorials on the crane, because overuse can reduce their effectiveness.
Note: Experience has indicated that the effectiveness of safety signs and hazard pictorials is reduced when they begin to exceed approximately 7 in number.
3.5 Safety signs and hazard pictorials can be used in operator and service instruction manuals to highlight areas requiring special care. Their use in manuals is not subject to the recommendation in Clause 3.4.
