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English Translations » 信息处理 » Questions regarding the flat cover of heat exchangers

Questions regarding the flat cover of heat exchangers

2009-03-02View Original

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Paragraph 151 specifies that stress verification of the heat exchanger’s shell and head is required before conducting pressure tests; then why is stress verification not necessary for the flat cover?
Reply #22009-03-03
3.17.2 Stress verification before pressure testing in GB151-1999: Before the pressure test, the stress of the cylinder and oval end caps shall be verified (the stress of the end caps shall also be verified when other types of end caps are used). Flat covers should be classified as other types of end caps and also require verification.
Reply #32009-03-03
I agree with the view on the second floor; it also needs to be verified.
Reply #42009-03-11
I agree with the view on the second floor; it also needs to be verified.

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Translated at 2026-07-28 04:33:33

Original: https://bbs.hcbbs.com/thread-404348-1-1.html

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