In Piping Plan 53C, there is an external barrier fluid system pressurized by a piston accumulator supplying clean liquid to the barrier fluid seal chamber. The barrier liquid is maintained at a pressure greater than seal chamber pressure. The piston accumulator senses pressure from a reference source and creates a higher pressure through differential areas in the piston. [API 682; G.20]. By using this reference line from the seal chamber, the necessary differential pressure is maintained for an Arrangement 3 seal.
Standard Features
- Piston accumulator, non-code, CS construction
- Shell and tube heat exchanger, non-code, CS shell, copper tubes
- Differential pressure transmitter with 3-valve manifold
- CS valves
- 316SS tubing and fittings
Options
- API 682 compliant
- ASME U stamp, ASME VIII, Div. 1 2015 for vessels
- SS valves and vessel
- All instrument types, ranges, and certifications
