API PLAN 75
Product Description
- API Plan 75 consists of reservoir, weld-pad level gauge, level transmitter, pressure transmitter, orifice plate & fittings.
| P.No. | Description |
|---|---|
|
F1 |
Flange |
|
F2 |
Blind Flange |
|
F3,F4 |
Flange |
|
V1 |
Two way manifold valve |
|
V2 |
Three way manifold valve |
|
V3 |
Ball Vavle |
|
G1 |
Pressure gauge |
|
G2 |
Pressure Transmitter/Switch |
|
G3 |
Level- gauge |
|
G4 |
Level Transmitter |
|
G5 |
Orifice-Plate |
Objective
- It is used to collect leakage for condensing or mixed phase leakage on arrangement 2 Seals.
- This plan is used when pumped fluid condenses at ambient temperature
- They are used on arrangement 2, unpressurised dual seals, which also utilizes a dry containment seal and where leakage from the inner seal may condense.
Advantages
- Lower initial cost alternative to API Plan 52
- Lower maintenance requirements and associated cost compared to liquid dual unpressurised seals that utilize reservoirs.
Technical Features
- Leakage from the inner seal is restricted from escape by the contained seal and is routed in the drain line.
- A level indicator on the collector is used to determine whether the collector needs to be drained.
- The level transmitter will enable the user to monitor the liquid leakage rate.
- An orifice plate in the outlet line restricts flow such that high leakage of the inner Seal will cause pressure increase & trigger the pressure transmitter to alarm at 0.7 bar (g)
- The block valve serves to isolate the collector for maintenance. It may also be used to test the inner Seal by closing while pump is in operation.
- A connection on the collector may be used to inject nitrogen or other gas for the purpose of testing the containment Seal.