API PLAN 53B

Barrier fluid Circulation is maintained by using pumping ring in running condition and in stand still condition. The pressure is maintained in the seal circuit by a bladder accumulator

In Piping Plan 53B, there is an external barrier fluid system pressurized by a bladder accumulator supplying clean liquid to the barrier fluid seal chamber. The accumulator and barrier liquid are maintained at a pressure greater than seal chamber pressure.

The use of an accumulator prevents contact between the pressurization gas and the barrier liquid.

This prevents gas absorption into the barrier liquid and allows for high-pressure operation. The accumulator is precharged prior to filling the system with barrier liquid and is brought to operating pressure by compressing the bladder in the accumulator as the system is filled with barrier liquid. Leakage past the inner and outer seals results in a decrease in the barrier system pressure.

Heat is removed from the circulation system by an air-cooled or water-cooled heat exchanger.

Effective flow of the Piping Plan 53B system is only achieved with proper exclusion of all gas and air bubbles from the seal cooler and piping.

Model :

• Single / Multiple accumulator

• Design Pressure : 56 Bar G @90°C
• Design Temperature : 100°C
• OperatingTemperature : 100°C

• Design Code : API 610
• Pressure Indicator : Dial 100
• Process flanged Connection: 600#

• Low Pressure Switch With ATEX : ¾”
• Sight Flow Indicator : AISI 316
• Temperature Indicator Cooler :W.C. or F. P. (Please refer Plan 21, Plan 23 to Heat Exchanger Details)

• 10% / 100% Radiography Test & Test Reports
• 10% / 100% Liquid Penetrant Test & Test Reports
• Safety & Process Valves
• Pressure Gauge
• Pressure switch Low

• Temperature Indicator
• Refill Hand Pump Unit
• Relief Valve
• NACE Materials
• Differential Pressure Transmitter

• Pressure Transmitter
• Temperature Transmitter
• Circulation Pump
• Temperature Element
• Accumulator Material