5.7.1 The processor of a control section should
receive signals from the oil content meter, the flow rate indicating
system and the ship's speed indicating system at time intervals not
exceeding 5 seconds and should automatically compute the following:
5.7.2 In category B monitoring systems where the
flow rate and ship's speed may be inserted manually, the current information
should be retained in the processor for use in the continuous calculation
of the oil discharge rate and the total quantity of oil discharged
and should be recorded at intervals specified in paragraph 5.8.3. The information currently
inserted into the processor should remain visibly displayed.
5.7.3 When the limits imposed by regulation 9(1)(a)(iv) and (v) are
exceeded, the processor should provide alarms and, in a category A
system, provide command signals to the overboard discharge control
arrangement which will cause the discharge of effluent into the sea
to stop.
5.7.4 The processor should normally include a
device for the continuous generation of time and date information.
Alternative arrangements for the automatic and continuous reception
of time and date information from an external source may be accepted.
5.7.5 In the event of power failure the processor
should retain its memory with respect to computation of the total
quantity of oil discharged, time and date. A print-out of data should
be obtained when the monitoring system is operating with manual override,
but this is not required if, when the power fails, the monitoring
system activates the overboard discharge control to stop the discharge
of effluent.