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MSC.1/Circ.1654
9 May 2022
The Maritime Safety Committee, at its 105th session (20 to 29 April 2022), in order to provide for a uniform application of the Code on noise levels on board ships (resolution MSC.337(91)) with respect to the noise limit for ʺworkshops other than those forming part of machinery spacesʺ, approved a unified interpretation on the noise level limit in workshops on board ships, set out in the annex, as prepared by the Sub-Committee on Ship Design and Construction, at its eighth session (17 to 21 January 2022).
Member States are invited to apply the unified interpretation set out in the annex and bring it to the attention of all parties concerned.
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MSC.1/Circ.1654
Annex, page 1
Part of paragraph 4.2.1 reads as follows:
Limits for noise levels (dB(A)) are specified for various spaces as follows:
Designation of rooms and spaces | Ship size | |
1,600 up to 10,000 GT | ≥10,000 GT | |
4.2.1 Workspaces (see 5.1) | ||
Workshops other than those forming part of machinery spaces | 85 | 85 |
For the purposes of applying provisions in the annex to resolution MSC.337(91) on the Code on noise levels on board ships, "workshops other than those forming part of machinery spaces" should be enclosed workshops which are separated from the engine-room with bulkheads, which may include access doors of the equivalent acoustic insulating properties as the bulkhead. Workbenches and workstations located inside the machinery space should not be considered as "workshops other than those forming part of machinery spaces".
The noise level limit for workshops, which are forming part of machinery space, should be as
for the machinery space: 110 dB(A).
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