5.8.1 The recording device of a control section
should include a digital printer. The recorded parameters should be
explicitly identified on the print-out. The print-out should be legible
and should remain so once removed from the recording device and should
be retained for at least 3 years.
5.8.2 The data to be automatically recorded should
include at least the following:
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.1 instantaneous rate of discharge of oil (litres
per nautical mile);
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.2 instantaneous oil content (ppm);
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.3 the total quantity of oil discharged (cubic
metres or litres);
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.4 time and date (GMT);
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.5 ship's speed in knots;
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.6 effluent flow rate;
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.7 status of the overboard discharge control or
arrangement;
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.8 oil type selector setting, where applicable;
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.9 alarm condition;
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.10 failure (i.e. no flow, fault, etc.); and
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.11 override action (i.e. manual override, flushing,
calibration, etc.).
Any information inserted manually should be identified on the
print-out as a manual input.
5.8.3 Data required in paragraph 5.8.2 of these Guidelines and Specifications should
be printed out, as applicable, with the following minimum frequency:
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.1 when the discharge is started;
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.2 when the discharge is stopped;
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.3 at intervals of not more than 10 minutes (except
when the system is in stand-by mode);
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.4 when an alarm condition develops;
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.5 when normal conditions are restored;
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.6 when input data are introduced;
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.7 whenever the computed rate of discharge varies
by 10 litres per nautical mile;
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.8 when zero-setting or calibration modes are
selected; and
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.9 on manual command.
5.8.4 The recording device should be located in
a position easily accessible to the person in charge of the overboard
discharge operation.