### 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》

18. Boiler feed systems
(1) Every boiler which provides services essential for the safety of the ship and which could be rendered dangerous by the failure of its feed water supply shall be provided with not less than two efficient and separate feed water systems so arranged that either of such systems may be opened for inspection or overhaul without affecting the efficiency of the other. Means shall be provided which will prevent overpressure in any part of the systems.
(2) If in any ship it is possible for oil to enter the feed water system of a boiler, the arrangements for supplying boiler feed water shall provide for the interception of oil in the feed water.
(3) Every feed check valve, fitting, or pipe through which feed water passes from a pump to such boilers shall be designed and constructed to withstand the maximum working stresses to which it may be subjected, with a factor of safety which is adequate having regard to the material of which it is constructed and the working conditions under which it will be used. Every such valve, fitting, or pipe shall, before being put into service for the first time, be subjected to a hydraulic test suitably in excess of the maximum working pressure of the boiler to which it is connected or of the maximum working pressure to which the feed line may be subjected, whichever shall be the greater, and shall be maintained in an efficient condition. The feed pipes shall be adequately supported.
(4) Means shall be provided to test and control the quality of the feed water to boilers.

### 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》

19. Steam pipe systems
(1) In every ship every steam pipe and every fitting connected thereto through which steam may pass shall be so designed and constructed as to withstand the maximum working stresses to which it may be subjected, with a factor of safety which is adequate having regard to—
(a) the material of which it is constructed, and
(b) the working conditions under which it will be used.
(2) Without prejudice to the generality of the foregoing, every steam pipe or fitting shall, before being put into service for the first time, be subjected to a test by hydraulic pressure to a pressure suitably in excess of the working pressure to be determined having regard to the requirements of subregulation (1)(a) and (b) and every such steam pipe or fitting shall be maintained in an efficient condition.
(3) Steam pipes shall be adequately supported.
(4) Provision shall be made which will avoid excessive stress likely to lead to the failure of any such steam pipe or fitting, whether by reason of variation in temperature, vibration or otherwise.
(5) Efficient means shall be provided for draining every such steam pipe so as to ensure that the interior of the pipe is kept free of water and that water hammer action will not occur under any condition likely to arise in the course of the intended service of the ship.
(6) If a steam pipe may receive steam from any source at a higher pressure than it can otherwise withstand with an adequate factor of safety, an efficient reducing valve, relief valve and pressure gauge shall be fitted to such pipe.

### 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》

20. Air pressure systems
(1) In every ship in which machinery essential for the propulsion and safety of the ship or of persons on board is required to be started, operated or controlled solely by compressed air, there shall be provided an efficient air system which shall include a sufficient number of air compressors and compressed air storage vessels to ensure that an adequate supply of compressed air is available under all conditions likely to be met in service.
(2) (a) The parts of every such compressed air system which are subjected to air pressure shall be designed and constructed to withstand, with an adequate factor of safety, the maximum working stresses to which they may be subjected, and every air pressure pipe or fitting in such system, other than a pneumatic control system, shall, before being put into service for the first time, be subject to a hydraulic test suitably in excess of the maximum working pressure to which it may be subjected and be maintained in an efficient condition.
(b) Means shall be provided to prevent overpressure in any part of any such compressed air system and, where water jackets or casings of air compressors and coolers might otherwise be subjected to dangerous overpressure due to leakage into them from air pressure parts, suitable pressure relief arrangements shall be provided.
(c) Provision shall be made to reduce to a minimum entry of oil into any such compressed air system and to drain the system. Provision shall also be made to protect the system from the effects of internal explosion.
(d) All discharge pipes from starting air compressors shall lead directly to the starting air receivers, and all starting air pipes from the air receivers to main or auxiliary engines shall be entirely separate from the compressor discharge pipe system.

21. Cooling water systems
In every ship in which cooling water services are essential for the running of the propelling machinery there shall be at least two means of operating such water services.

### 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》

22A. Use of low-flashpoint fuel
(1) A ship (other than a specified ship) may use low-flashpoint fuel if—
(a) the use is approved by the Director on being satisfied that the applicable requirements specified in the IGF Code are complied with in relation to the ship; and
(b) the applicable requirements on the arrangement, installation, control and monitoring of machinery, equipment and systems using low-flashpoint fuel specified in the IGF Code are complied with in relation to the ship.
(2) If a ship uses low-flashpoint fuel under subregulation (1), regulation 22 does not apply to the ship.
(3) The owner and the master of a ship (other than a specified ship) that uses low-flashpoint fuel must ensure that the applicable requirements on the testing, drills, emergency exercises and operations specified in the IGF Code are complied with in relation to the ship.
(4) In this regulation—
IGC Code (《國際氣體規則》) means the International Code for the Construction and Equipment of Ships Carrying Liquefied Gases in Bulk set out in the Annex to Resolution MSC.5(48) adopted by the Maritime Safety Committee of the International Maritime Organization on 17 June 1983, as from time to time revised or amended by any revision or amendment to any provision of such Code that applies to Hong Kong;
IGF Code (《國際氣體燃料規則》) means the International Code of Safety for Ships Using Gases or Other Low-flashpoint Fuels set out in the Annex to Resolution MSC.391(95) adopted by the Maritime Safety Committee of the International Maritime Organization on 11 June 2015, as from time to time revised or amended by any revision or amendment to any provision of such Code that applies to Hong Kong;
low-flashpoint fuel (低閃點燃料) means gaseous or liquid fuel that has a flashpoint lower than that permitted under regulation 4.2.1.1 of Chapter II-2 of the Annex to the Convention as from time to time revised or amended by any revision or amendment to that regulation that applies to Hong Kong;
specified ship (指明船舶) means—(a) a gas carrier in relation to which the applicable requirements of the IGC Code are complied with; or
(b) a ship that is owned or operated by—
(i) the Government; or
(ii) the government of a party to the Convention.

(L.N. 251 of 2018)