3.8.1 Subject to the requirements
of this section, cargo piping may be arranged to permit bow or stern
loading and unloading.
3.8.1.1 Bow or stern loading
and unloading lines which are led past accommodation spaces, service
spaces or control stations should not be used for the transfer of
products requiring a type 1G ship. Bow or stern loading and unloading
lines should not be used for the transfer of toxic products as specified
in 1.3.38 unless specifically approved
by the Administration.
3.8.2 Portable arrangements
should not be permitted.
3.8.3 In addition to the requirements
of chapter 5 the following provisions apply
to cargo piping and related piping equipment:
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.1 Cargo piping and related piping equipment outside
the cargo area should have only welded connections. The piping outside the cargo
area should run on the open deck and should be at least 760 mm inboard except for
thwartships shore connection piping. Such piping should be clearly identified and
fitted with a shutoff valve at its connection to the cargo piping system within
the cargo area. At this location, it should also be capable of being separated by
means of a removable spool piece and blank flanges when not in use.
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.2 The piping is to be full penetration butt welded,
and fully radiographed regardless of pipe diameter and design temperature. Flange
connections in the piping are only permitted within the cargo area and at the
shore connection.
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.3 Arrangements should be made to allow such piping
to be purged and gas-freed after use. When not in use, the spool pieces should be
removed and the pipe ends be blank-flanged. The vent pipes connected with the
purge should be located in the cargo area.
3.8.4 Entrances, air inlets
and openings to accommodation spaces, service spaces, machinery spaces
and control stations should not face the cargo shore connection location
of bow or stern loading and unloading arrangements. They should be
located on the outboard side of the superstructure or deckhouse at
a distance of at least 4% of the length of the ship but not less than
3 m from the end of the superstructure or deck house facing the cargo
shore connection location of the bow or stern loading and unloading
arrangements. This distance, however, need not exceed 5 m. Sidescuttles
facing the shore connection location and on the sides of the superstructure
or deckhouse within the distance mentioned above should be of the
fixed (non-opening) type. In addition, during the use of the bow or
stern loading and unloading arrangements, all doors, ports and other
openings on the corresponding superstructure or deckhouse side should
be kept closed. Where, in the case of small ships, compliance with 3.2.4 and this paragraph is not possible,
the Administration may approve relaxations from the above requirements.
3.8.5 Deck openings and air
inlets to spaces within distances of 10 m from the cargo shore connection
location should be kept closed during the use of bow or stern loading
or unloading arrangements.
3.8.6 Electrical equipment
within a zone of 3 m from the cargo shore connection location should
be in accordance with chapter 10.
3.8.7 Fire-fighting arrangements for the bow or stern
loading and unloading areas should be in accordance with 11.3.1.3 and 11.4.7.
3.8.8 Means of communication
between the cargo control station and the shore connection location
should be provided and if necessary certified safe.