3.1 The part flow system shall be so fitted that
it can effectively provide a representative sample of the overboard
effluent for visual display under all normal operating conditions.
3.2 The part flow system is in many respects similar
to the sampling system for an oil discharge monitoring and control
system but shall have pumping and piping arrangements separate from
such a system, or combined equivalent arrangements acceptable to the
Administration.
3.3 The display of the part flow shall be arranged
in a sheltered and readily accessible location on the upper deck or
above, approved by the Administration (e.g. the entrance to the pump-room).
Regard should be given to effective communication between the location
of the part flow display and the discharge control position.
3.4 Samples shall be taken from relevant sections
of the overboard discharge piping and be passed to the display arrangement
through a permanent piping system.
3.5 The part flow system shall include the following
components:
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.1 sampling probes;
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.2 sample water piping system;
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.3 sample feed pump(s);
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.4 display arrangements;
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.5 sample discharge arrangements; and, subject
to the diameter of the sample piping,
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.6 flushing arrangement.
3.6 The part flow system shall comply with the
applicable safety requirements.