关于防浪阀的问题

石岛港888

这个问题比较纠结，主要因为阀件标准没能和船级规范同步造成的

miner911

lmw0320 发表于 2012-7-31 21:58
1. 是哪个船级社对此要求是设计压力的1.5倍？
2. 关于阀件的试压，可以做密性，也可以做水压。关键是是否 ...

1）关于你的第一个问题，
----CCS规范轮机篇2.6.2.8：所有阀件应在车间进行液压试验，其试验压力应为1.5倍设计压力。2.7.2.1中提到舷侧阀，试验压力不少于0.5MPa。
----LR规范：8.1.7. Valves and fittings nonintegral with the piping system, intended for Classes I and II, are to be tested in accordance with recognised standards, but to not less than 1,5 times the design pressure。2.5.10. Valves, cocks and distance pieces, intended for installation on the ship’s side below the load waterline, are to be tested by hydraulic pressure to not less than 5 bar.
----ABS规范：

7.3.1 Hydrostatic Test of Pipes Before Installation Onboard

All Classes I and II pipes and integral fittings after completion of shop fabrication, but before

insulation and coating, are to be hydrostatically tested in the presence of a Surveyor, preferably

before installation, at the following pressure.

PH = 1.5P

where PH = test pressure, and P = design pressure.

7.3.2 Hydrostatic Tests of Shell Valves

All valves intended for installation on the side shell at or below the deepest load waterline,

including those at the sea chests, are to be hydrostatically tested in the presence of the Surveyor,

before installation, to a pressure of at least 5 bar (5.1 kgf/cm2, 72.5 psi).

-----NK规范要求：装在舷侧载重水线以下的阀，应进行水压试验，其试验压力为设计压力的1.5倍或0.5MPa，取大者。

关于你的第二个问题：阀件的试压，可以做密性，可是以上船级社规范中都要求做水压试验（液压试验）。如有规范要求支撑，麻烦贴出出处？