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111. Steam pipe systems
(1) In every ship to which these regulations apply every steam pipe and 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 such steam pipe or fitting shall, before being put into service for the first time, be subjected to a test to a hydraulic pressure to be determined having regard to the requirements of subregulation (1)(a) and (b) but in no case to less than twice the working pressure to which it may be subjected and shall at any time thereafter be capable of withstanding such a test.
(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 conditions likely to arise in the course of the intended service of the ship.
(6) If in any ship to which these regulations apply a steam pipe may receive steam from any source at a higher pressure than it can withstand with an adequate factor of safety, an efficient reducing valve, relief valve and pressure gauge shall be fitted to such pipe.

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113. Cooling systems
(1) In every ship to which these regulations apply where machinery essential for the propulsion or safety of the ship or of persons on board is dependent for its operation on an efficient cooling water system there shall be provided at least one circulating pump and, except in the case of any emergency generator, provision shall be made so that in the event of the failure of such pump an alternative pump is available for the same duty. Such pumps shall be capable of supplying adequate cooling water to such machinery, oil coolers, fresh water coolers or condensers fitted thereto, as the case may be.
(2) If direct sea water cooling is used for essential internal combustion machinery the sea water suctions shall be provided with strainers which can be cleaned without interruption of the supply of water.
(3) Means shall be provided for ascertaining whether the cooling systems are working properly and for preventing overpressure in any part thereof.
(4) The exhaust pipes and silencers of every internal combustion engine provided in a ship to which these regulations apply shall be efficiently cooled or lagged.

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114A. 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 114 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—
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 ship that is owned or operated by—
(a) the Government; or
(b) the government of a party to the Convention.

(L.N. 255 of 2018)

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115. Oil fuel installations: (cooking ranges and other heating appliances)
(1) If in any ship to which these regulations apply a cooking range or other heating appliance is supplied with fuel from an oil tank, the tank shall not be situated in a galley, and the supply of oil to the burners shall be capable of being controlled from a position outside the galley. No range or burner shall be fitted which is designed to be operated by means of oil fuel having a flashpoint of less than 60oC.
(2) The tank shall be provided with an air pipe leading to the open air. The pipe shall be in such a position that there will be no danger of fire or explosion resulting from the emergence of oil vapour from the pipe when the tank is being filled. The pipe shall be fitted with a detachable wire gauze diaphragm.
(3) Safe and efficient means shall be provided for filling every such tank and for preventing overpressure therein.

116. Ventilation
In every ship to which these regulations apply every space in which an oil fuel tank or any part of an oil fuel installation is situated shall be adequately ventilated.

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117. Oil systems for lubricating, cooling and control
(1) In every ship to which these regulations apply, being a ship in which oil is circulated under pressure for the lubrication or cooling or as the sole means of control of machinery essential for the propulsion or safety of the ship or persons on board, at least 2 pumps shall be provided each of which shall be adequate for circulating such oil:
Provided that in the case of any emergency generator in any ship only one such pump shall be required.
(2) In every ship of Class I, Class II or Class II(A) propelled by turbine machinery, or having turbo-electric propelling machinery, the lubricating oil arrangements shall be such that an emergency supply of oil is available sufficient to maintain after a power failure an adequate supply of lubricating oil for at least 3 minutes or for such time as may be required for unloaded turbo-electric propelling machinery to come to rest from the maximum running speed. Such emergency supply shall automatically come into use on failure of the pressure supply of lubricating oil from the pump or pumps.
(3) Strainers shall be provided for straining the lubricating oil and shall be capable of being cleaned without interrupting the supply of such oil.
(4) Means shall be provided for ascertaining whether the lubricating system is working properly and for preventing overpressure in any part of the system. If the means of preventing overpressure is a relief valve it shall be in close circuit.
(5) The arrangements for the storage and distribution of flammable oils used in pressure systems in machinery spaces shall comply with the requirements of regulation 114(4), (7), (11), (14) and (19) as they apply to oil fuel installations. Other arrangements may be permitted in machinery spaces other than those of Category A, where the Director is satisfied that the safety of the ship is not impaired.

118. Communication between bridge and engine room
Every ship of Class I, Class II or Class II(A) to which these regulations apply shall be provided with 2 means of communicating orders from the navigating bridge to the engine room control platform. One of the means shall be an engine room telegraph.