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Thank you for your reply. My undestanding is that VR stamp is not necessary when the repair is carried out before the application of V and NB stamp. The repair was carried out 2018 while the test was 2019. The nameplates with stamp VR and V/NB were installed at the same time after the test.

Dear Gentlemen, Safety Valves were delivered to site (and installed) without V and NB stamps on the nameplate due to the reason that it will be tested on site (set pressure). Repair/parts replacement was carried out on the valves before the test due to the leak observed in the other units...

Dear Mohamed, See attached interpretation in support to the interpretation provided by david. regards,

Dear Mohamed, See attached file extracted from Section 8. regards

Hope it could help.

Dear Daniel, Before I saw your message, we are actually discussing the same thing, that is to test using two different boiler base pressure. It makes us more interested after I saw your message and shared it with my colleague. Thank you very much, raa2125

Dear Dhurjati Sen, I read thru the link you sent. This procedure may not be advisable to our boiler. Here, we used the hydraulic lift assist device. Our boiler is supercritical with MAWP stamp on the nameplate as "26.7Mpa". Maxium set pressure we have is over 31 Mpa. It may be dangerous to...

Dear gentlemen, In one of the audit of local authorities on the on-going boiler erection, they raised a question regarding the safety valve as follow; "How could you confirm if the test result of safety valve using lift assist device is the same with actual popping pressure". We could not...

hacksaw and mk3223, I think I am enlightened by your responses. Thanks to both of you. Regards,

hacksaw, YES to which question below? (a), (b) or both (a)&(b). The client/owner question is,(a)is it mandatory that any repair/alteration in future be an R or UV stamp? (b) Or they could use an NBIC (Repair and alteration) as a guide without the application of R or UV stamp? Can you cite any...

Dear Dhurjati Sen, Thank you for your suggestion. We always told them that its out of the construction scope and they should check their local regulation. But sometimes we cannot say no to the clients request, so we have to look any provision in the code or interpretation for their reference...

Dear Gentlemen, We erected a power boiler and applied "S" Stamp after the hydrotest. Local regulation (in one of Asia country) requires newly constructed power boiler or parts be regsitered in National Board. This requirements had been satisfied by us (boiler manufacturer). The client/owner...