Patent ID: 11906061
Assignee: IDEATION AS
Field: Mechanical elements (Mechanical engineering)
Classification: CPC F  G | IPC F  G

Claim 6:
7. The method according to claim 4 wherein the step of determining if the PSV is tight enough to remain in service includes:
closing the first and second isolation valves,
opening the first and second bleed valves,
applying the same pressure on both sides of the PSV,
venting the pressure between the PSV and the second isolation valve through the SC,
calculating the volume between PSV and the second isolation valve and second fluid line by measuring the fluid flow through the second fluid line until a given lower pressure is reached,
applying test fluid to a predefined leak testing level of the PSV through the first bleed valve,
measuring any pressure build-up in the volume between PSV and the second isolation valve and second fluid line over a given time period,
using the pressure build-up in the volume between PSV and the second isolation valve and second fluid line over said given time period to calculate the leak rate per time unit.