API 2000: Credit for depressuring device for N2 Pad Valve Failure
API 2000: Credit for depressuring device for N2 Pad Valve Failure
(OP)
I am revalidating PVRV for API 620 LP Tank. API 2000 doesn't say anything about credit for depressuring device for Inert Pad Failure. Can i take credit for flow through depressuring valve?
Thanks in advance for any feedback
Thanks in advance for any feedback





RE: API 2000: Credit for depressuring device for N2 Pad Valve Failure
RE: API 2000: Credit for depressuring device for N2 Pad Valve Failure
what is the likelihood of failure at the same time? and are the failures related?
is the depad device a simple back pressure regulator? or is a control valve with a control loop from a PIT?
is the pad regulator a pilot operated with remote sensing line that is also connected to a common valve that provides the tap to a PIT to a PIC? that could result in a common root cause failure that could impact both the supply and outlet, etc.
are you likely to be filling the tank and using the capacity of the depad regulator when you have the supply failure?
you need to define your credible scenarios and then address them.