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[接上页] (3) Every main and emergency switchboard shall be so arranged as to give easy access to the back and the front thereof without danger to any person. Every such switchboard shall be suitably guarded and a non-conducting mat or grating shall be provided at the back and the front where necessary. No exposed parts which may have a voltage between conductors or to earth exceeding 250 volts direct current or 55 volts alternating current shall be installed on the face of any switchboard or control panel. (4) The hull return system of distribution shall not be used in any ship to which these regulations apply, but the Director may exempt any such ship, other than a tanker, from this regulation. (5) In every ship to which these regulations apply every electric cable shall, at every position at which an electrical fault may cause a fire, be flame-retardant sheathed or armoured or otherwise equally effectively protected. All metal sheaths and metal armour of electric cable in every such ship shall be electrically continuous and shall be earthed. (6) In every such ship lighting fittings shall be arranged to prevent rises in temperature which would be injurious to the electric wiring thereof or which would result in a risk of fire in the surrounding material. (7) In every such ship electric wiring shall be supported in such a manner as to avoid chafing and other injury. (8) Every separate electrical circuit shall be protected against short circuit. (9) In every such ship each separate electrical circuit, other than a circuit which operates the ship's steering gear or any other circuit in respect of which the Director grants an exemption, shall be protected against overload. There shall be clearly and permanently indicated on or near each overload protective device the current carrying capacity of the circuit which it protects and the rating or setting of the device. (10) In every such ship all accumulator (storage) batteries shall be housed in boxes or compartments which are constructed to protect the batteries from damage and are ventilated to minimize the accumulation of explosive gas. Devices liable to arc shall not be installed in any compartment assigned principally to accumulator batteries. (11) Every electric space-heater forming part of the equipment of such a ship shall be fixed in position and shall be so constructed as to reduce the risk of fire to a minimum. No such heater shall be constructed with an element so exposed that clothing, curtains, or other material can be scorched or set on fire by heat from the element. (Enacted 1991) Cap 369R reg 11 Fire protection Expanded Cross Reference: 12, 13, 14, 15, 16, 17, 18 Regulations 12 to 18 shall (subject to the provisions of regulation 1(4)(a) and (6)) apply to ships of 4000 tons or over. (Enacted 1991) Cap 369R reg 12 Where a bulkhead is required by these regulations to be constructed of 'B' Class panels, such panels- (a) shall be so constructed as to be capable of preventing the passage of flame to the end of the first one-half hour of the standard fire test; (b) shall have an insulation value such that the average temperature of the unexposed side will not rise more than 139oC (250oF) above the original temperature, nor will the temperature at any one point, including any joint, rise more than 225oC (405oF) above the original temperature, within the time listed below- Class "B-15" 15 minutes Class "B-0" 0 minutes(c) shall be constructed of approved non-combustible materials and all materials entering into the construction and erection of 'B' Class panels shall be non-combustible, except where on a cargo ship the use of combustible materials is not precluded, in which case it shall comply with the temperature rise limitation specified in paragraph (b) up to the end of the first one-half hour of the standard fire test. (Enacted 1991) Cap 369R reg 13 (1) The hull, superstructure, structural bulkheads, decks and deck-houses shall be constructed of steel or of such other suitable materials as the Director may permit in special cases, having regard to the risk of fire. (2) The corridor bulkheads serving accommodation spaces and control stations shall be constructed of steel or of 'B' Class panels. (Enacted 1991) Cap 369R reg 14 (1) In every ship to which these regulations apply doorways and similar openings in corridor bulkheads shall be capable of being closed by permanently attached doors or by shutters. (2) In every such ship the number of ventilation openings in such bulkheads shall be kept to a minimum. Such openings shall, so far as is reasonably practicable, be provided only in or under doors and shall, wherever practicable, be in the lower part of the door. (Enacted 1991) Cap 369R reg 15 In every ship to which these regulations apply interior stairways, ladders and crew lift trunks within accommodation spaces shall be constructed of steel or other equivalent material. (Enacted 1991) Cap 369R reg 16 The boundary bulkheads of any emergency generator room and the bulkheads separating a galley, paint-room, lamp-room, or boatswain's store from an accommodation space shall be constructed of steel or other equivalent material. |