I think if you are to apply BS 6364, it is in addition to API 598.
I think testing will go as follows.
You test the valves in accordanc with API 598.
(Let's say we are talking about Group 2.2 material
like A182-F316. We are going to test hydrostatically,
no pneumatic test that appears in API 598.)
a). Shell test pressure = 275 * 1.5 = 425 PSIG (with nearest 25 psig increment)
b). Seat test pressure = 275 * 1.1 = 325 PSIG (with nearest 25 psig increment)
And test them again with BS 6364.
c). Shell strength test (In accordance with API 598)
- you pass this test, because you tested in a).
d). Shell leak test
e). Seat leak test at 6.9 barg.
- you pass this test, because you tested in b).
f). Cryogenic prototype test
-196'c, helium, 275 psig
What I think is you take test a), b), d), f).
Am I right?
I think testing will go as follows.
You test the valves in accordanc with API 598.
(Let's say we are talking about Group 2.2 material
like A182-F316. We are going to test hydrostatically,
no pneumatic test that appears in API 598.)
a). Shell test pressure = 275 * 1.5 = 425 PSIG (with nearest 25 psig increment)
b). Seat test pressure = 275 * 1.1 = 325 PSIG (with nearest 25 psig increment)
And test them again with BS 6364.
c). Shell strength test (In accordance with API 598)
- you pass this test, because you tested in a).
d). Shell leak test
e). Seat leak test at 6.9 barg.
- you pass this test, because you tested in b).
f). Cryogenic prototype test
-196'c, helium, 275 psig
What I think is you take test a), b), d), f).
Am I right?