7.4 Warning notices
Clasification Society 2024 - Version 9.40
Statutory Documents - IMO Publications and Documents - International Codes - Noise Levels - Code on Noise Levels on Board Ships – Resolution A.468(XII) - Annex - Code on Noise Levels on Board Ship - Chapter 7 - Ear Protection and Warning Information - 7.4 Warning notices

7.4 Warning notices

 Where the noise level in machinery spaces (or other spaces) is greater than 85 dB(A), entrances to such spaces shall carry a warning notice comprising symbol and supplementary sign in the working language of the ship as prescribed by the Administration (see below an example of the warning notice and signs in English). If only a minor portion of the space has such noise levels the particular location(s) or equipment shall be identified at eye level, visible from each direction of access.

Signs at the entrance to noisy rooms (example in English)
80-85 dB(A) HIGH-NOISE LEVEL – USE HEARING PROTECTORS
85-110 dB(A) DANGEROUS NOISE – USE OF HEARING PROTECTORS MANDATORY
110-115 dB(A) CAUTION: DANGEROUS NOISE – USE OF HEARING PROTECTORS MANDATORY – SHORT STAY ONLY
>115 dB(A) CAUTION: EXCESSIVELY HIGH-NOISE LEVEL – USE OF HEARING PROTECTORS MANDATORY – NO STAY LONGER THAN 10 MINUTES

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