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发表于 2010-8-10 19:51
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来自： 中国浙江台州
BV 规范原文是这样的：
BV Rules Part C, Chapter 1, Section 10, 9.1.7 Special arrangements for air pipes of flammable oil tanks
9.1.7 Special arrangements for air pipes of flammable oil tanks
a) Air pipes from fuel oil and thermal oil tanks are to discharge to a safe position on the open deck where no danger will be incurred from issuing oil or gases.
Where fitted, wire gauze diaphragms are to be of corrosion resistant material and readily removable for cleaning and replacement. The clear area of such diaphragms is not to be less than the cross-sectional area of the pipe.
b) Air pipes of lubricating or hydraulic oil storage tanks not subject to flooding in the event of hull damage may be led to machinery spaces, provided that in the case of overflowing the oil cannot come into contact with electrical equipment, hot surfaces or other sources of ignition.
c) The location and arrangement of vent pipes for fuel oil service, settling and lubrication oil tanks are to be such that in the event of a broken vent pipe there is no risk of ingress of seawater or rainwater.
d) Air pipes of fuel oil service, settling and lubrication oil tanks likely to be damaged by impact forces are to be adequately reinforced.
e) Where seawater or rainwater may enter fuel oil service, settling and lubrication oil tanks through broken air pipes, arrangements such as water traps with:
• automatic draining, or
• alarm for water accumulation
are to be provided.
如果现场验船师或审图部门认为船上燃油日用舱、燃油沉淀舱或滑油舱的透气管安装位置在破损的情况下容易进入海水或雨水，那么可能就要船厂加上一个Water trap这样的东西，以满足BV规范的相关要求。
如果现场验船师或审图部门认为透气管的安装位置在破损的情况下不容易进入海水或雨水，那么就不需要加装Water trap。
所以在实船上，大家可能没有见到过透气管上装有Water trap这样的东西。
顺便提醒以下, 在Water Trap下面一般还需要加装一个泄放阀和相关的泄放管，以利于Water Trap有雨水或海水进入时，能把存留在Water Trap中的雨水或海水泄放掉。 |
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