Section 4 Orderly evacuation and abandonment after a casualty
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Clasifications Register Rules and Regulations - Rules and Regulations for the Classification of Ships, July 2022 - Part 5 Main and Auxiliary Machinery - Chapter 23 Additional Requirements for Passenger Ships - Section 4 Orderly evacuation and abandonment after a casualty

Section 4 Orderly evacuation and abandonment after a casualty

Parent topic: Chapter 23 Additional Requirements for Passenger Ships

4.1 General

4.1.1 Consistent with the requirements of the relevant SOLAS Regulations, this Section provides design criteria for machinery and equipment described in Pt 5, Ch 23, 1.1 Scope and application 1.1.2 to remain operational, thereby supporting orderly evacuation and abandonment of the ship in the event of a fire that exceeds the casualty threshold.

4.1.2 In addition to the requirements of Pt 6, Ch 2, 1.16 Operation under fire conditions, when any one main vertical zone is unserviceable due to fire, machinery and equipment essential for the provision of the following emergency services are to remain operational in the remaining part of the ship not affected by fire:

  1. for fire main systems where supplied by electrically driven fire pumps, the pumps (and electrical equipment essential for their operation) are to be located and arranged such that operating capability will be available in all main vertical zones not directly affected by the casualty. This is in addition to the requirements of Pt 6, Ch 2, 17.4 Fire pumps;

  2. for internal communication:

    1. general emergency alarm system. This is in addition to the requirements of Pt 6, Ch 2, 18.2 General emergency alarm system;

    2. public address system. This is in addition to the requirements of Pt 6, Ch 2, 18.3 Public address system; and

    3. from the safety centre as required by Pt 6, Ch 2, 17.9 Safety centre on passenger ships 17.9.1;

    where identified by the National Administration to be required to satisfy SOLAS 1974 as amended, Chapter II-2/G, 3 Systems for communication in support of fire-fighting and/or for passenger and crew notification and evacuation;

  3. for bilge systems, the bilge pumping systems, and all associated equipment essential for its operation, in all spaces not directly affected by the casualty to permit the removal of fire-fighting water. This is in addition to the requirements of Pt 5, Ch 13 Ship Piping Systems and Pt 6, Ch 1, 2.7 Valve control systems; and

  4. lighting of escape routes, assembly stations and at embarkation stations of life-saving appliances and electrically powered low location lighting. This is in addition to the requirements of Pt 6, Ch 2 Electrical Engineering, Pt 6, Ch 2, 3 Emergency source of electrical power, Pt 6, Ch 2, 5.4 Insulated distribution systems, Pt 6, Ch 2, 5.7 Lighting circuits, Pt 6, Ch 2, 18.1 Emergency lighting and Pt 6, Ch 2, 18.4 Escape route or low location lighting (LLL).

4.1.3 When any one main vertical zone is unserviceable due to fire, electrical power, where required, is to be available and sustainable for the following services:

  1. those required by Pt 5, Ch 23, 4.1 General 4.1.2;

  2. other required means of internal communications systems not addressed by Pt 5, Ch 23, 4.1 General 4.1.2.(b);

  3. means of external communications provided to communicate via the GMDSS or the VHF Marine and Air Band distress frequencies even if the main GMDSS equipment is lost;

  4. guidance systems for evacuation not addressed by Pt 5, Ch 23, 4.1 General 4.1.2.(d);

  5. life-saving appliances and arrangements;

  6. other systems that the National Administration has determined to be necessary to comply with SOLAS 1974 as amended, Chapter II-2/G, 3 Systems ; and

  7. other fixed electrically powered loads intended to be operated during evacuation and abandonment.

The electrical power available is to be at least sufficient to supply the machinery and equipment specified by the National Administration as necessary to support orderly evacuation and abandonment with due regard to such services as may be operated simultaneously.

4.1.4 Machinery and equipment required to satisfy this sub-Section is to be capable of operation for at least 3 hours based on the assumption of no damage outside the unserviceable main vertical zone. System operation within the unserviceable main vertical zones is not required.

4.1.5 A description of the intended system function in the event of fire for the services referred to in this Section is to be submitted for consideration, see Pt 5, Ch 23, 1.4 Plans and information 1.4.3. A risk based analysis is to be conducted in accordance with standards acceptable to LR to assess the availability of services required by this Section, see Pt 5, Ch 23, 1.4 Plans and information 1.4.4 and Pt 5, Ch 23, 3.3 Analysis scope 3.3.4.

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