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发表于 2007-11-19 22:22
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来自： 中国上海
防水塞就是在外壳上开个孔，弄个塞子赛上。液舱，就是装液体的舱。2个的放水快，没什么特别依据，如果船东愿意，放个10个也成，因为不是class项目。放水塞大船小船都一样，两种形式见下。
11.1.1. Drain plugs are not normally a classification matter, but if they are fitted Surveyors should be guided by the following.
11.1.2. Drain plugs are acceptable in double bottoms or other tanks, but should not be fitted in open spaces such as bilges or wells.
11.1.3. Where the shell plating is greater than 12,5 mm, then plugs of type A may be fitted, see [url=mk MSITStore:C:\Program%20Files\Lloyd]Fig. 6.11.1[/url].
11.1.4. Where the shell plating is less than 12,5 mm, then an adequate pad or doubling is to be fitted in way of plugs, so that the maximum number of threads is obtained with screwed plugs, Type B, see [url=mkMSITStore:C:\Program%20Files\Lloyd]Fig. 6.11.1[/url].
11.1.5. Where the plugs stand proud of the shell plating, then some form of tapered chafing or protection ring should be fitted externally. Where the underside of the pad is recessed to ensure the plug head is flush with the shell, the minimum thickness of the pad is not to be less than the shell thickness.
11.1.6. All welds in way of drain plugs are to be inspected visually and checked with a suitable NDE method.
11.1.7. For identification purposes, plugs with square heads are often fitted to oil tanks and hexagonal heads for water tanks.
11.1.8. Drain plugs should be kept clear of docking blocks, welded seams or butts, flat of keel, suction strums or any other arrangements inside tanks.
11.1.9. Tank numbers, etc. may be welded adjacent to each plug for identification purposes.
11.1.10. Where pads are to be fitted on higher tensile steel, then the pads should be of the same grade of steel.
[img]mkMSITStore:C:\Program%20Files\Lloyd's%20Register\Rulefinder\9.8\Rulefinder_LR.chm::/x-ifs-3800-2047.gif[/img] |
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