### Merchant Shipping (Safety) (Cargo Ship Construction and Survey) (Ships Built On or After 1 September 1984) Regulations 《商船(安全)(貨船構造及檢驗)(1984年9月1日或之後建造的船舶)規例》

43. Main source of electrical power and main switchboard
(1) A main source of electrical power shall be provided in every ship of sufficient capacity to supply all the services required by regulation 42(1)(a) and (b). This main source of electrical power shall consist of at least two generating sets. The main source of electrical power shall be arranged so that such services can be maintained regardless of the speed and direction of rotation of the propulsion machinery or shafting.
(2) The arrangement of the generating sets required by subregulation (1) shall be such that with any one of the sets out of service—
(a) normal operational conditions of propulsion and safety of the ship and minimum comfortable conditions of habitability including those for cooking, heating, domestic refrigeration, mechanical ventilation, sanitary and fresh water can be maintained, and
(b) from a dead ship condition, the remaining sets are capable of providing the electrical services necessary to start the main propulsion plant. The emergency source of electrical power may be used for this purpose if it is capable of simultaneously supplying the emergency supplies required by regulation 47 or it is capable of supplying such services when combined with any other source of electrical power.
(3) Load shedding or other equivalent arrangements shall be provided to protect the generators required by subregulation (1) against sustained overload.
(4) Any transforming equipment supplying an electrical system referred to in this regulation shall be arranged to ensure the same continuity of supply as that required for generating sets by this regulation.
(5) The main switchboard shall be located in the same space as the main generating sets in any ship with only one generating station. Where there is more than one generating station and only one main switchboard, that switchboard shall be located in the same space as one of the generating stations. The Certifying Authority may permit other arrangements where other essential features of the ship render the application of this requirement impracticable subject to such alternative provisions as it may require. For the purposes of this paragraph an environmental enclosure for the main switchboard, such as a machinery control room within the main boundary of the space, does not provide separation between the generating sets and switchboards.
(6) The main busbars shall be subdivided in every ship in which the total installed electrical power of the main generating sets exceeds 3 megawatts. Each section of the busbars shall be interconnected by removable links or other suitable means such that the main generating sets and any supplies to duplicated services which are directly connected to the busbars are, so far as it is practicable, equally divided between the sections. The Certifying Authority may permit other arrangements which provide equivalent system redundancy.

### Merchant Shipping (Safety) (Cargo Ship Construction and Survey) (Ships Built On or After 1 September 1984) Regulations 《商船(安全)(貨船構造及檢驗)(1984年9月1日或之後建造的船舶)規例》

44. Lighting Systems
(1) The main source of electrical power in every ship shall be capable of illuminating any part of the ship normally accessible to and used by the passengers or the crew.
(2) The emergency electric lighting shall be arranged so that a fire or other casualty in spaces containing the emergency source of electrical power, the associated transformers, if any, the emergency switchboard and the emergency lighting switchboard will not render inoperative the main electric lighting system as required by subregulation (1).
(3) Lighting fittings shall be arranged to prevent rises in temperature which would be injurious to the fitting or the electric wiring or which would result in a risk of fire.

### Merchant Shipping (Safety) (Cargo Ship Construction and Survey) (Ships Built On or After 1 September 1984) Regulations 《商船(安全)(貨船構造及檢驗)(1984年9月1日或之後建造的船舶)規例》

46. Starting arrangements for emergency generating sets
(1) Emergency generating sets shall be capable of being readily started at a temperature of 0oC. If temperatures below 0oC are anticipated provision shall be made for heating the engine so that it will start readily.
(2) The starting, charging and energy storing devices, which shall not be used for any purpose other than the operation of the emergency generating set, shall be located in the emergency generator space except that the air receiver of the emergency generator set may be supplied from the main or auxiliary compressed air system through a non-return valve located in the emergency generator space.
(3) The stored energy required for starting shall be maintained at all times—
(a) in electrical and electro-hydraulic systems, from the emergency switchboard, and
(b) in compressed air systems, by the main or auxiliary compressed air system or by an emergency air compressor which, if it is electrically driven, shall be supplied from the emergency switchboard.
(4) Any emergency generating set arranged to be automatically started shall—
(a) be equipped with a starting system having sufficient stored energy for 6 consecutive starts, and
(b) be provided with an additional source of stored energy independent of the starting system required by paragraph (a) capable of producing a further six starts within 30 minutes unless an alternative and independent starting system is provided or effective manual starting can be demonstrated.
(5) Any emergency generator that is not arranged for automatic starting shall either—
(a) be provided with starting arrangements in accordance with the requirements of subregulation (4) except that the starting may be initiated manually, or
(b) be started manually by cranking, inertia starters or manually charged hydraulic accumulators provided that at least six starts can be accomplished within 30 minutes.

### Merchant Shipping (Safety) (Cargo Ship Construction and Survey) (Ships Built On or After 1 September 1984) Regulations 《商船(安全)(貨船構造及檢驗)(1984年9月1日或之後建造的船舶)規例》

48. Location and construction of cables
(1) All electric cables external to equipment shall be flame retardant and shall be installed so that their flame retarding or equivalent properties are not impaired. The Certifying Authority may permit installation of cables which do not comply with the foregoing for particular purposes, such as radio frequency cables, where compliance would be impracticable.
(2) Cables shall be installed and supported in such a manner as to avoid chafing and other damage. All metal sheaths and metal armour of electric cables shall be electrically continuous and shall be earthed except that the Certifying Authority may permit such earthing to be omitted for particular purposes.
(3) Cables serving emergency services shall not, so far as is practicable, be routed through galleys, laundries, machinery spaces of Category A and their casings or other high fire risk areas except insofar as it is necessary to provide emergency services in such areas. Cables connecting fire pumps to the emergency switchboard shall be of a fire resistant type where they pass through high fire risk areas.
(4) Cables serving emergency services shall, where practicable, be installed in such a manner as to preclude them being rendered unserviceable by the effect of a fire in an adjacent space and subsequent heating of the dividing bulkhead.
(5) The electrical, mechanical, flame retarding and, where applicable, fire resisting properties of the terminations and joints in any conductor shall be at least equivalent to those of the conductor.

### Merchant Shipping (Safety) (Cargo Ship Construction and Survey) (Ships Built On or After 1 September 1984) Regulations 《商船(安全)(貨船構造及檢驗)(1984年9月1日或之後建造的船舶)規例》

54. Materials used in construction
(1) Every overboard scupper, sanitary discharge or other inlet or outlet installed in a location where the failure of any such inlet or outlet could cause flooding in the event of fire shall be constructed of materials that are not readily rendered ineffective by heat.
(2) Pipes intended to convey oil or other flammable liquids shall be of a suitable material having regard to the risk of fire. Such pipes should not be installed in accommodation and service spaces unless adequate precautions are taken having regard to the risk of fire and the Certifying Authority considers their installation necessary.
(3) The surface of any insulation shall be impervious to oil or oil vapours in any space where the penetration of oil or oil products would otherwise be possible.
(4) Materials installed on a ship on or after 1 March 2019 that are used for the structure, machinery, electrical installations or equipment of the ship must not contain asbestos. (L.N. 251 of 2018)