本帖最后由 knstar 于 2011-12-20 13:22 编辑
回复 knstar
1. 关于第二个NCR,我认为只要给个水压试验压力值,并进行应力校核就可以了。没有必要 ...
SHINES 发表于 2011-12-20 13:02
我认为,如果气压试验就N/A
如果水压试验的时候静压头很小就可以ignore,
下边内容供参考。
Question (1): The operating liquid level in a vertical vessel is controlled so that the level can never exceed half-full. In complying with the requirements of UG-21 in Section VIII, Division 1, is it permissible to determine the thickness of the bottom head of the vessel for the maximum allowable working pressure plus the static head due to the operating liquid, even though the vessel is full of liquid at hydrostatic test?
Reply (1): Yes.
Question (2): Shall consideration be given to the effect of the static head during hydrostatic test of the vertical vessel described in Question (1)?
Reply (2): Yes, see UG-22(b) and UG-99(b).
Question (3): If Reply (2) is yes, shall U-2(g) be used to check the design at hydrostatic test?
Reply (3): Yes.
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