5.1.1 Material
used for the Ballast Water Treatment System (BWTS) is to be manufactured
and tested in accordance with the requirement of the Rules for
the Manufacture, Testing and Certification of Materials.
5.1.2 Where
the BWTS uses hazardous or reactive materials then the proposed materials
for construction are to be suitable for their intended use. Such materials
are subject to special consideration and are to be considered in the
risk-based studies, see
Pt 5, Ch 25, 6 Risk-based studies.
5.1.3 Materials used for chemical storage tanks and associated piping systems are
to be resistant to such chemicals and constructed in accordance with the Rules and
Regulations for the Construction and Classification of Ships for the Carriage of
Liquid Chemicals in Bulk (hereinafter referred to as the Rules for Ships for
Liquid Chemicals), as applicable.
5.1.4 Non-metallic materials which do not comply with the fire endurance test
requirements given in Pt 5, Ch 12, 5.4 Fire performance criteria, may be used
in BWTS provided that the system can be remotely isolated from other ship systems by
isolation valves which are of steel construction, including the remote actuator, or of
an acceptable fire tested design. The control of isolation valves is to be designed in
accordance with the characteristics of fail-safe operation.