[接上页]

　　(4) Any ventilator shaft constructed solely for the purposes of ventilation may be fitted as an air outlet when serving a compartment ventilated either naturally or mechanically if its coaming extends sufficiently high above the weather as to permit the ventilator to remain open in ordinary weather:
　　
　　Provided that where a non-cowl type of ventilator is fitted in a natural ventilation system as an exhaust ventilator its area shall be at least double that required for a cowl ventilator in the same position.
　　
　　(5) Any unberthed passenger space situated in the uppermost between deck, bridge or other detached superstructure compartment or deckhouse shall be ventilated by-
　　
　　(a) a trunked mechanical ventilation or other air change system fitted in accordance with regulation 23; or
　　
　　(b) a natural ventilation system so arranged as to provide an aggregate area of not less than 10 square inches for each person of the maximum number for which the space may be measured, that is 5 square inches each of inlet and of exhaust ventilation:
　　
　　Provided that where a compartment is abreast the machinery or boiler casings, or immediately above the machinery spaces, the area of each ventilator serving the compartment shall be increased by not less than 50 per centum.(6) Every ventilator cowl shall-
　　
　　(a) be placed in an unobstructed position where it can remain open in ordinary weather and can be trimmed in any direction; and
　　
　　(b) have an area at least 50 per centum greater than that of its coaming.(7) Every ventilator coaming shall-
　　
　　(a) project to the bottom of the beam of the compartment that it serves;
　　
　　(b) be measured at the narrowest part of the air passage; and
　　
　　(c) not exceed 452 square inches in area (24 inches in diameter); and
　　
　　(d) be not less than 78.5 square inches in area (10 inches in diameter).(8) If less than 4 ventilators are fitted to any one compartment, suitable trunks shall be provided to ensure proper distribution of air, except where any such ventilator does not exceed 15 inches in diameter, in which case, such trunking shall not be required.
　　
　　(9) If an odd number of ventilators is fitted, the prescribed inlet and exhaust areas shall be maintained.
　　
　　(10) If any trunking or air passage has a curved bend or knee and the angle does not exceed 30o, no additional area is required to be provided; but for any curved bend or knee of which the angle exceeds 30o, the following additions to the area shall be made-
　　
　　(a) for curved bends of angles ranging between 30o to 60o, 5 per centum additional area for each such curved bend;
　　
　　(b) for curved bends of angles ranging between 60o to 90o, 10 per centum additional area for each such curved bend;
　　
　　(c) for knees of angles ranging between 30o to 60o, 16 per centum additional area for each such knee; and
　　
　　(d) for knees of angles ranging between 60o to 90o, 36 per centum additional area for each such knee.(11) If the radius of the inner side of any curved bend is less than the diameter of the trunk or air passage, the bend shall be regarded as a knee.
　　
　　Cap 369E reg 23 Mechanical ventilation of unberthed passenger spaces
　　
　　(1) In every ship to which these regulations apply engaged in the eastern trade area, other than a ship engaged exclusively in the river trade area, every space allocated for the accommodation of unberthed passengers situated-
　　
　　(a) below the uppermost between deck; or
　　
　　(b) in a compartment in an upper between deck that is completely covered by a long superstructure,shall be ventilated by a trunked mechanical ventilation or other air change system approved by the Director:
　　
　　Provided that, where such an uppermost between deck space or long superstructure has large openings in the sides of the ship with no means fitted whatsoever of closing the openings, the unberthed passenger compartment in the between deck next below and adjacent to such openings may, subject to the approval of the Director, be regarded as an uppermost between deck and may be exempt from the requirement to be ventilated by a trunked mechanical ventilation or other air change system.
　　
　　(2) The approval, on completion, of any system of mechanical ventilation shall be conditional upon the results of anemometer tests with which the Director is satisfied that the system is efficient.
　　
　　(3) Arrangements shall be made to ensure a sufficient supply of air in the event of a breakdown in any part of a mechanical ventilation system-
　　
　　(a) by interconnecting the air ducts from two or more fans;
　　
　　(b) by providing additional independent means of mechanical ventilation; or
　　
　　(c) by providing spare gear, properly packed for storage, for each size of electric motor employed to operate any trunked mechanical ventilation or other air change system on the following scale-
　　
　　(i) for direct current motors-
　　
　　1 armature
　　
　　1 field cod
　　
　　1 set of bearings
　　
　　1 brush holder
　　
　　1 set of carbon brushes; and(ii) for alternating current motors-
　　
　　1 set of stator windings, complete with insulation pieces
　　
　　1 set of bearings.(4) A trunked mechanical ventilation system, required to be fitted to any space pursuant to this regulation, shall be capable of delivering, under normal sea-going conditions, for each passenger of the maximum number for which the space may measure, at least 830 cubic feet of fresh air per hour.

此法规有错误，我来纠正。请点击在此提交错误内容或者您纠正的内容！

回到顶部

法规搜索：

关于法邦网

法律百科

京公网安备11010802013176号

客服电话：15811286610