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发表于 2011-12-10 13:58
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来自: 中国辽宁大连
ZJ,止裂孔是要开的,直径大于等于25mm,且要大于比龙骨对接的焊缝,开孔的下缘距离复板尽可能近,如果不开的话也可以用无损探伤来代替,下面这句是LR的原话。
For ships over 65 m in length, holes are to be drilled in the bilge keel butt welds. The size and position of these holes are to be as illustrated in Fig. 10.5.5. Where the butt weld has been subject to non-destructive examination the stop hole may be omitted. |
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