3.6
Cargo under in-transit
fumigation
5 The existing text under 3.6 is renumbered as
3.6.1.
6 Insert new paragraphs 3.6.2 and 3.6.3 as follows:
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3.6.2 3.6.2 When a fumigant is used, such as phosphine
gas, for fumigation-in-transit, due consideration shall be given to
the severe toxicity of fumigants, taking into account that fumigants
may enter into occupied spaces despite many precautions taken. In
particular, in the case that fumigant leaks from a cargo hold under
fumigation, the possibility should be kept in mind that it may enter
the engine-room via pipe tunnels, ducts, and piping of any kind, including
wiring ducts on or below deck, or dehumidifier systems that may be
connected to parts of the cargo hold or compartments of the engine-room.
Attention shall be given to potential problem areas such as bilge
and cargo line systems and valvesfootnote.
In all cases, ventilation procedures on board the ship during the
voyage, should be scrutinized with regard to the possibility of drawing
in the fumigant gas such as by incorrect ventilation procedures and
settings, vacuum creation due to incorrect closing devices or flap
settings, air conditioning and closed loop ventilation of the accommodation.
Prior to commencement of fumigation procedures, it should be verified
that ventilation flaps and closing devices are set correctly and that
means of closing and sealing of all the bulkhead openings (such as
doors and manholes) leading from the engine-room to piping tunnels/duct
keels and other spaces that in case of leaks could become unsafe to
enter during the fumigation are effective, confirmed closed and have
warning signs posted.footnote
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3.6.3 Gas concentration safety checks shall also
be made at all appropriate locations, which shall at least include:
accommodation; engine-rooms; areas designated for use in navigation
of the ship; and frequently visited working areas and stores, such
as the forecastle head spaces, adjacent to cargo holds being subject
to fumigation in transit, shall be continued throughout the voyage
at least at eight-hour intervals or more frequently if so advised
by the fumigator-in-charge. Special attention shall also be paid to
potential problem areas such as bilge and cargo line systems. These
readings shall be recorded in the ship's logbook.