Modifications to orifice flange with pressure taps not drilled
Modifications to orifice flange with pressure taps not drilled
(OP)
To what extent are we allowed to modify standardized piping components in a facility designed to ASME B31.3?
We have received orifice flanges with no pressure taps drilled, and orifice flanges with no jack screws. My question is:
Can we still consider the orifice flange as a B 16.36 flange if we modify it in our shop? One thing's for sure, the manufacturer won't assume responsibility for such modification and will state that the normal way to deal with this is to have the non-conform flanges sent back for re-work. Would you approve such modifications if you were in my place?
Thanks
We have received orifice flanges with no pressure taps drilled, and orifice flanges with no jack screws. My question is:
Can we still consider the orifice flange as a B 16.36 flange if we modify it in our shop? One thing's for sure, the manufacturer won't assume responsibility for such modification and will state that the normal way to deal with this is to have the non-conform flanges sent back for re-work. Would you approve such modifications if you were in my place?
Thanks





RE: Modifications to orifice flange with pressure taps not drilled
RE: Modifications to orifice flange with pressure taps not drilled
RE: Modifications to orifice flange with pressure taps not drilled
Any deviations from B16.36 will require a complete engineering evaluation, with calc's. Allowed, but requires a lot of effort.