3 Phase Separator P&ID

This P&ID illustrates a 3-phase horizontal separator vessel that receives a mixed 3-phase inlet stream and separates it into vapor, oil, and water. The vapor outlet is regulated by a pressure control loop. The oil and water outlets are each managed by separate level control loops, with internal weirs and vortex breakers ensuring efficient separation and withdrawal.

Source: instrumentationtools.com_piping-and-instrumentation-diagram.jpg · Components: 33 (1 equipment, 6 instrument, 21 valve, 5 line)

Equipment (1)

Tag Description Details Connects to
separator-vessel 3 Phase Separator Vessel Horizontal vessel with demister pad, weir, and vortex breakers. inlet-line, vapor-outlet-line, oil-outlet-line, water-outlet-line, psv-1, LT-1, LT-2, PT

Instruments (6)

Tag Function (ISA 5.1) Description Details Connects to
PT PT = Pressure Transmitter, field mounted Pressure Transmitter — separator-vessel, PC
PC PC = Pressure Controller, shared display/control Pressure Controller — PT, PV
LT-2 LT = Level Transmitter, field mounted Oil Level Transmitter — separator-vessel, LC-2
LC-2 LC = Level Controller, shared display/control Oil Level Controller — LT-2, LV-2
LT-1 LT = Level Transmitter, field mounted Water Level Transmitter — separator-vessel, LC-1
LC-1 LC = Level Controller, shared display/control Water Level Controller — LT-1, LV-1

Valves (21)

Tag Description Details Connects to
inlet-valve Inlet Isolation Valve Gate valve with pneumatic actuator inlet-line, separator-vessel
vapor-valve-1 Vapor Outlet Isolation Valve 1 Gate valve with pneumatic actuator vapor-outlet-line, vapor-manual-valve-1
vapor-manual-valve-1 Vapor Outlet Manual Valve 1 Manual gate valve vapor-valve-1, PV
PV Pressure Control Valve Pneumatic control valve vapor-manual-valve-1, vapor-manual-valve-2, PC
vapor-manual-valve-2 Vapor Outlet Manual Valve 2 Manual gate valve PV, vapor-valve-2
vapor-valve-2 Vapor Outlet Isolation Valve 2 Manual gate valve vapor-manual-valve-2, vapor-outlet-line
psv-iso-valve PSV Isolation Valve Gate valve psv-line
psv-1 Pressure Safety Valve Relief valve, angle type psv-line
psv-bypass-valve PSV Bypass Valve Globe valve psv-line
oil-valve-1 Oil Outlet Isolation Valve Gate valve with pneumatic actuator oil-outlet-line
oil-manual-valve-1 Oil Outlet Manual Valve 1 Manual gate valve oil-outlet-line, LV-2
LV-2 Oil Level Control Valve Pneumatic control valve oil-manual-valve-1, oil-manual-valve-2, LC-2
oil-manual-valve-2 Oil Outlet Manual Valve 2 Manual gate valve LV-2, oil-outlet-line
oil-drain-valve Oil Drain Valve Manual valve to drain/flare oil-outlet-line
oil-bypass-valve Oil Bypass Valve Globe valve oil-outlet-line
water-valve-1 Water Outlet Isolation Valve Gate valve with pneumatic actuator water-outlet-line
water-manual-valve-1 Water Outlet Manual Valve 1 Manual gate valve water-outlet-line, LV-1
LV-1 Water Level Control Valve Pneumatic control valve water-manual-valve-1, water-manual-valve-2, LC-1
water-manual-valve-2 Water Outlet Manual Valve 2 Manual gate valve LV-1, water-outlet-line
water-drain-valve Water Drain Valve Manual valve to drain/flare water-outlet-line
water-bypass-valve Water Bypass Valve Globe valve water-outlet-line

Lines (5)

Tag Description Details Connects to
inlet-line 3 Phase Inlet Line 3 Phase Inlet inlet-valve, separator-vessel
vapor-outlet-line Vapor Outlet Line Vapor Outlet separator-vessel, vapor-valve-1, PV, vapor-valve-2
psv-line PSV Line — separator-vessel, psv-iso-valve, psv-1, psv-bypass-valve
oil-outlet-line Oil Outlet Line Oil Outlet separator-vessel, oil-valve-1, oil-manual-valve-1, LV-2, oil-manual-valve-2, oil-bypass-valve
water-outlet-line Water Outlet Line Water Outlet separator-vessel, water-valve-1, water-manual-valve-1, LV-1, water-manual-valve-2, water-bypass-valve

Notes on drawing