6.1 Structural materials used
for tank construction, together with associated piping, pumps, valves,
vents and their jointing materials, shall be suitable at the temperature
and pressure for the cargo to be carried in accordance with recognized
standards. Steel is assumed to be the normal material of construction.
6.2 The shipyard is responsible
for providing compatibility information to the ship operator and/or
master. This must be done in a timely manner before delivery of the
ship or on completion of a relevant modification of the material of
construction.
6.3 Where applicable, the following
should be taken into account in selecting the material of construction:
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.1 notch ductility at the operating temperature;
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.2 corrosive effect of the cargo; and
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.3 possibility of hazardous reactions between the
cargo and the material of construction.
6.4 The shipper of the cargo
is responsible for providing compatibility information to the ship
operator and/or master. This must be done in a timely manner before
transportation of the product. The cargo shall be compatible with
all materials of construction such that:
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.1 no damage to the integrity of the materials of
construction is incurred; and/or
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.2 no hazardous, or potentially hazardous reaction is
created.
6.5 When a product is submitted
to IMO for evaluation, and where compatibility of the product with
materials referred to in paragraph 6.1 renders special requirements,
the BLG Product Data Reporting form shall provide information on the
required materials of construction. These requirements shall be reflected
in chapter 15 and consequentially be referred
to in column o of chapter 17.
The reporting form shall also indicate if no special requirements
are necessary. The producer of the product is responsible for providing
the correct information.