API Plan 76 collects leakage from the inboard seal in applications where normal process fluid leakage does not condense between the seals at ambient temperatures. In this piping plan, gaseous leakage from the inboard seal exits through the containment seal vent port in the gland. The orifice creates the necessary back-pressure for a pressure transmitter to signal an alarm in the event of a seal failure.
API Plan 76 Panel and API Plan 76 Kit
Panel and kit shown with some optional components.
- Monitors inboard seal leakage that does not condense at ambient temperatures
- Is typically used in conjunction with a Plan 72
Plan 76 is available as an assembled panel. The associated field installation kit for use in connecting the panel to your system is also available. Panel contents may include:
- Swagelok tube fittings
- 63 series ball valves
- V series 2-valve manifold
- CH series check valves
- PGI series gauges
- Swagelok pipe fittings
- Pressure transmitter
- Pressure switch
- Mounting panel
- Brackets/miscellaneous hardware
See page 67 of the Mechanical Seal Support Systems Application Guide for additional details and ordering information. Contact your authorized Swagelok sales and service center for information on optional components.