4.1 In continuously manned spaces or spaces where
seafarers might reasonably be expected to spend lengthy periods of
time on maintenance or overhaul work, and where separation as detailed
in section 2 of this appendix is not practicable, consideration should
be given to the fitting of sound insulating enclosures or partial
enclosures to engines or machinery producing sound pressure levels
in excess of the limits set out in section 4.2 of
the Code.
4.2 Where the noise level produced by engines
or machinery installed in spaces as in paragraph 4.1 above falls within
the criteria of paragraph 5.3.1 of the Code and zone A of figure 5.1,
it is essential that noise reduction measures are provided.
4.3 When sound insulating enclosures are fitted,
it is important that they entirely enclose the noise source.