Three-Phase Separator Control System
This P&ID shows a three-phase horizontal separator with dedicated control loops for level and pressure regulation. It displays a water outlet with a level control loop (LT/LC/LV), an oil outlet with its own level control loop (LT/LC/LV) separated by an internal weir, and a vapor outlet regulated via a pressure control loop (PT/PC/PV).
Source: instrumentationtools.com_piping-and-instrumentation-diagram.jpg · Components: 11 (1 equipment, 6 instrument, 4 valve)
Equipment (1)
| Tag |
Description |
Details |
Connects to |
| V-100 |
3-Phase Separator |
Equipped with Demister Pad, Weir, and Vortex Breakers |
LT-1, LT-2, PT-1, PSV-1 |
Instruments (6)
| Tag |
Function (ISA 5.1) |
Description |
Details |
Connects to |
| PT-1 |
PT = Pressure Transmitter, field-mounted |
Pressure Transmitter |
— |
V-100, PC-1 |
| PC-1 |
PC = Pressure Controller, shared display/control |
Pressure Controller |
— |
PT-1, PV-1 |
| LT-1 |
LT = Level Transmitter |
Level Transmitter |
Left side interface / water level measurement |
V-100, LC-1 |
| LC-1 |
LC = Level Controller, shared display/control |
Level Controller |
— |
LT-1, LV-1 |
| LT-2 |
LT = Level Transmitter |
Level Transmitter |
Right side oil level measurement |
V-100, LC-2 |
| LC-2 |
LC = Level Controller, shared display/control |
Level Controller |
— |
LT-2, LV-2 |
Valves (4)
| Tag |
Description |
Details |
Connects to |
| PSV-1 |
Pressure Safety Valve |
Vents to atmosphere or safe location |
V-100 |
| PV-1 |
Pressure Control Valve |
Controls vapor outlet flow |
PC-1 |
| LV-1 |
Level Control Valve |
Water outlet control valve |
LC-1 |
| LV-2 |
Level Control Valve |
Oil outlet control valve |
LC-2 |