8.7 Alarm system
Clasification Society 2024 - Version 9.40
Statutory Documents - IMO Publications and Documents - International Codes - 1989 MODU Code – Code for the Construction and Equipment of Mobile Offshore Drilling Units, 1989 – Resolution A.649(16) - Chapter 8 – Periodically Unattended Machinery Spaces for all types of Units - 8.7 Alarm system

8.7 Alarm system

  8.7.1 An alarm system should be provided in the main machinery control station giving audible and visual indication of any fault requiring attention. It should also:

  • .1 activate an audible and visual alarm at another normally manned control station;

  • .2 activate the engineers' alarm required by 7.8, or an equivalent alarm acceptable to the Administration, if an alarm function has not received attention locally within a limited time;

  • .3 as far as is practicable be designed on the fail-to-safety principle; and

  • .4 when in the marine mode, activate an audible and visual alarm on the navigating bridge for any situation which requires action by the officer on watch or which should be brought to his attention.

  8.7.2 The alarm system should be continuously powered with automatic change-over to a stand-by power supply in case of loss of normal power supply.

  8.7.3 Failure of the normal power supply of the alarm system should be alarmed.

  8.7.4 The alarm system should be able to indicate at the same time more than one fault and the acceptance of any alarm should not inhibit another alarm.

  8.7.5 Acceptance at the position mentioned in 8.7.1 of any alarm condition should be indicated at the positions where it has been shown. Alarms should be maintained until they are accepted and the visual indications should remain until the fault has been corrected, when the alarm system should automatically reset to the normal operating condition.

Parent topic: Chapter 8 – Periodically Unattended Machinery Spaces for all types of Units
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