custody transfer metering requirement for double block and bleed valve
custody transfer metering requirement for double block and bleed valve
(OP)
I am working on projects for ship loading facilities, custody tranfer.
All systems I have seen so far has double block and bleed valves up and down stream of the meters. Most experts explain that it is in OIML, API or MID -> nobody can point it out.
the only phrase I found is regarding bypassing the meter.
Does anybody knows why these expensive valves are applied?
All systems I have seen so far has double block and bleed valves up and down stream of the meters. Most experts explain that it is in OIML, API or MID -> nobody can point it out.
the only phrase I found is regarding bypassing the meter.
Does anybody knows why these expensive valves are applied?





RE: custody transfer metering requirement for double block and bleed valve
Regards
Roy
RE: custody transfer metering requirement for double block and bleed valve
David