【法规名称】
【法规编号】 61480 什么是编号？
【正 文】
第8页 CAP 369S MERCHANT SHIPPING (SAFETY) (CARGO SHIP CONSTRUCTION AND SURVEY) (SHIPS BUILT ON OR AFTER 1 SEPTEMBER 1984) REGULATIONS
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[接上页] (Enacted 1991) Cap 369S reg 10A Access to spaces in the cargo area of oil tanker (1) This regulation applies to oil tankers which are post 1994 ships. (2) Access to cofferdams, ballast tanks, cargo tanks and other spaces in the cargo area shall be direct from the open deck and such as to ensure their complete inspection. Access to double bottom spaces may be through a cargo pump room, pump room, deep cofferdam, pipe tunnel or similar compartments, subject to consideration of ventilation aspects. (3) For access through horizontal openings, hatches or manholes, the dimensions shall be sufficient to allow a person wearing a self-contained, air-breathing apparatus and protective equipment to ascend or descend any ladder without obstruction and also to provide a clear opening to facilitate the hoisting of an injured person from the bottom of the space. The minimum clear opening should be not less than 600 millimetres by 600 millimetres. (4) For access through vertical openings, or manholes providing passage through the length and breadth of the space, the minimum clear opening should be not less than 600 millimetres by 800 millimetres at a height of not more than 600 millimetres from the bottom shell plating unless gratings or other footholds are provided. (5) For oil tankers of less than 5000 tonnes deadweight, the Certifying Authority may approve smaller access openings in special circumstances if the ability to traverse such openings or to remove an injured person can be proved to its satisfaction. (L.N. 415 of 1995) Cap 369S reg 11 Precaution against oil spills Means shall be provided to isolate oil spills on the upper deck from accommodation and service spaces and shall take into account stern cargo handling facilities where these are provided. (Enacted 1991) Cap 369S reg 12 Cargo tank ventilation (1) The cargo tank venting systems shall be independent of the ventilation arrangements for any other compartments. The arrangement and position of the openings in the cargo tank deck from which the emission of flammable vapours can occur shall be such as to minimize the possibility of flammable vapours being admitted into enclosed spaces containing a source of ignition or collecting in the vicinity of machinery and equipment which may constitute an ignition hazard. (2) The cargo tank venting arrangements shall- (a) be so designed and constructed as to ensure that the pressure, above or below that of the atmosphere, within the tanks does not exceed the design pressures, (b) include pressure-vacuum valves capable of providing for the flow of vapour, air or inert gas mixtures caused by thermal variations within the cargo tank, and (c) be capable of providing for the flow of vapour, air or inert gas mixtures whilst the tank is being loaded, ballasted or discharged at the highest rate.(3) Every vent system outlet to atmosphere from a valve required by subregulation (2)(b) shall be located as high and at the furthest distance from a source of ignition as is practicable and in no case shall it be located less than 2 metres above the cargo tank deck or less than 5 metres from air intakes or openings to enclosed spaces containing a source of ignition or from machinery and equipment which may constitute an ignition hazard. (4) By-pass arrangements for the pressure-vacuum valves required by subregulation (2)(b) may be fitted if the valves are located in a vent main or masthead riser. Indicators showing whether the by-pass is open or shut shall be provided. (5) Every vent system outlet to atmosphere provided in accordance with subregulation (2)(c) shall- (a) permit the free flow of vapour mixtures or be so designed that the discharge velocity of the vapour mixtures is at least 30 metres per second, (b) be so arranged that the vapour mixture is discharged vertically upwards, (c) where the system permits the free flow of vapour mixtures be such that the outlets to atmosphere are located at least 6 metres above the cargo tank deck. If a fore and aft gangway is provided the outlets from the tanks shall be located at least 6 metres above the gangway if any outlet is less than 4 metres, measured horizontally, from the gangway or is less than 10 metres, measured horizontally, from the nearest air intake or opening to an enclosed space containing a source of ignition and from machinery and equipment which may constitute an ignition hazard, (d) where the system is so designed that the discharge velocity of the vapour mixtures is at least 30 metres per second, be such that the outlets to atmosphere are located at least 2 metres above the cargo tank deck and at least 10 metres, measured horizontally, from the nearest air intake or opening to an enclosed space containing a source of ignition and from machinery and equipment which may constitute an ignition hazard. Such outlets shall be provided with high velocity vents designed and constructed in accordance with Schedule 1 of these regulations, and (e) be so arranged as to prevent the design pressure of any cargo tank being exceeded. For the purposes of this regulation the system shall be designed on the basis of the maximum designed cargo loading rate of any tank or group of tanks multiplied by a factor at least 1.25.(6) The venting arrangement of each cargo tank may be independent or combine with other cargo tanks and may be connected to the inert gas piping required by regulations 49, 55 or 58 of the Merchant Shipping (Safety) (Fire Protection) (Ships Built On or After 1 September 1984) Regulations (Cap 369 sub. leg.). Where the arrangements are combined with other cargo tanks, stop valves or other effective means of isolating each cargo tank shall be provided. Stop valves shall be provided with locking arrangements to permit control of their operation. Any cargo tank isolation arrangement provided in accordance with this subregulation shall not prevent the flow of vapour, air or inert gas caused by thermal variations within the tank. |
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