Section 1 Boiler Valve in-place test(on line Popping test)requirement for PSVs

[nasim123]

Dears
If we have section 1 Boiler PSVs,even if we calibrate the PSV in the shop, we need to conduct in place test(on line popping test) at site. What is the reason behind this requirement.

Why a section 1 Boiler PSV needs to test at shop & then test at site?

Awaiting your feedback

Thanks
Nasim

 

[bljnv]

These valves are critical safety elements. Hence they are tested on site. Apart from there could be national regulations which warrant such tests repeated every year.

 

[don1980]

nasim123 - please point out the paragraph in ASME Sec I where you see a requirement to do a pop test in the field. I don't know of such a requirement, and I can't find this in Sec I.