What is Plan 53A?
Plan 53A uses an external reservoir to provide barrier fluid for a pressurized dual seal arrangement. Reservoir pressure is produced by a gas, usually nitrogen, at a pressure greater than the maximum process pressure being sealed. During normal operation, circulation is maintained by an internal pumping ring.
How does API plan 53B work?
API Plan 53B circulates a pressurized barrier fluid between the inboard and outboard seals. The source of pressurization is a bladder accumulator. Plan 53B has the advantage of not allowing gas absorption into the barrier fluid which may allow for operation at higher pressures than Plan 53A.
How does a plan 52 work?
API Plan 52 seal systems employ a seal pot (reservoir) to deliver an unpressurized buffer fluid to the seal chamber and circulate the fluid between the inboard and outboard mechanical seals. This plan is commonly used with light hydrocarbons or fluids with a high vapour pressure.
What is a seal flush plan?
A flush plan is a strategic equipment arrangement that circulates fluid to or from the seal chamber in order to maintain proper lubrication, pressure, temperature, and solids management. The goal is to create an ideal work environment for the seal in order to avoid wear and failures, thus prolonging its useful life.
What is difference between Plan 53A and 53B?
The major difference in the plans is that Plan 53A uses an external reservoir, while Plans 53B and 53C run within a closed loop system with a make-up system piped to it for replenishment of the barrier fluid.
What is a seal in engineering?
A mechanical seal is a device that helps join systems or mechanisms together by preventing leakage (e.g. in a pumping system), containing pressure, or excluding contamination. A stationary seal may also be referred to as ‘packing’.
Do we need to maintain pressure system as in plan 53A?
No need to maintain pressure system as in Plan 53A. 1. For media where product dilution is not allowed but leakage to atmosphere in diluted form may be allowed. 2. Preferred for clean, non-polymerizing media with vapour pressure higher than buffer fluid pressure (Is also used for lower vapour pressure media). 1.
What is plan 52 buffer fluid?
Seal Plan 52 is commonly used with light hydrocarbons or fluids with a high vapor pressure. The buffer fluid must be compatible with process fluid as inboard seal leakage will eventually mix with the buffer fluid.
Is plan 52 available as a seal pot Assembly?
Plan 52 is available as a seal pot assembly. The associated field installation kit for use in connecting the seal pot assembly to your system is also available. Assembly components may include:
What is API Plan 52 in chemistry?
API Plan 52 1 Description. Depressurised buffer fluid circulation in outboard seal of a dual seal configuration through a seal support system. 2 Features. No process contamination. 3 Use. For media where product dilution is not allowed but leakage to atmosphere in diluted form may be allowed. 4 Caution.