3 Cabling for public address and alarm systems
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Statutory Documents - IMO Publications and Documents - Circulars - Maritime Safety Committee - MSC/Circular.808 – Recommendation on Performance Standards for Public Address Systems on Passenger Ships, Including Cabling – (Adopted on 30 June 1997) - Annex - Recommendation on Performance Standards for Public Address Systems on Passenger Ships, Including Cabling - 3 Cabling for public address and alarm systems

3 Cabling for public address and alarm systems

  3.1 Cables and wiring serving internal communications or signals should, as far as practicable, be routed clear of galleys, laundries, machinery spaces of category A and their casings and other high fire risk areas unless serving those spaces. Where practicable, all such cables should be run in such a manner so as to preclude their being rendered unserviceable by heating of the bulkheads that may be caused by a fire in an adjacent space. All areas of each fire zone should be served by at least two dedicated loops sufficiently separated throughout their length and supplied by independent amplifiers.

  3.2 Equipment associated with the public address systems should meet the requirements for a vibration and electromagnetic interference in the current edition of publication 533 or publication 945 of IEC, as appropriate. Electrically powered systems should provide a minimum degree of ingress protection appropriate to the location, in accordance with IEC 92-101 standard.

  3.3 Relevant sections of the Code on Alarms and Indicators should also be applied.

Parent topic: Annex - Recommendation on Performance Standards for Public Address Systems on Passenger Ships, Including Cabling
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