Plan 75 (Leakage Containment Vessel)
Buffer/Barrier
Plan 75 is a collection system used with secondary containment seals for process fluid that will condense at lower temperatures or is always in a liquid state.
Why do we use it?
- When an arrangement 2 plan is required
- When the process fluid includes liquids/condenses after leaking across the inboard seal
- When a liquid leakage collection provision is available
- When a vent/flare system is available
Advantages:
The collection reservoir contains a pressure transmitter to indicate a build up in pressure from excessive primary seal leakage or failure.
General:
Plan 75 can be used in conjunction with a gas purge from Plan 72.
