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发表于 2007-12-20 09:52
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来自： 英国
如果是air vent 或是air pipe，看LL公约。
Regulation 19 - Ventilators
(1). Ventilators in position 1 or 2 to spaces below freeboard deck or decks of enclosed superstructures shall have coamings of steel or other equivalent material, substantially constructed and efficiently connected to the deck. Ventilators in position 1 shall have coamings of a height of at least 900 mm above the deck; in position 2 the coamings shall be of a height at least 760 mm above the deck. Where the coaming of any ventilator exceeds 900 mm in height it shall be specially supported.
(2). Ventilators passing through superstructures other than enclosed superstructures shall have substantially constructed coamings of steel or other equivalent material at the freeboard deck.
(3). Ventilators in position 1 the coamings of which extend to more than 4.5 m above the deck, and in position 2 the coamings of which extend to more than 2.3 m above the deck, need not be fitted with closing arrangements unless specifically required by the Administration.
(4). Except as provided in paragraph (3), ventilator openings shall be provided with weathertight closing appliances of steel or other equivalent material. In ships of not more than 100 m in length the closing appliances shall be permanently attached; where not so provided in other ships, they shall be conveniently stowed near the ventilators to which they are to be fitted.
(5). In exposed locations, the height of coamings may be increased to the satisfaction of the Administration.
应该有watertight closing appliances。
Regulation 20 - Air pipes
(1). Where air pipes to ballast and other tanks extend above the freeboard or superstructure decks, the exposed parts of the pipes shall be of substantial construction; the height from the deck to the point where water may have access below shall be at least 760 mm on the freeboard deck and 450 mm on the superstructure deck.
(2). Where these heights may interfere with the working of the ship, a lower height may be approved, provided that the Administration is satisfied that the closing arrangements and other circumstances justify a lower height.
(3). Air pipes shall be provided with automatic closing devices.
(4). Pressure-vacuum valves (PV valves) may be accepted on tankers.
应该有automatic closing devices。
如果说是measure draft的，怎么量？如果不是，是一个vent，那没有closing devices，是否ok？
[ 本帖最后由 都市 于 2007-12-20 09:55 编辑 ] |
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发表于 2007-12-20 08:59
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提升卡
变色卡
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