API Plan 53A vs 53B
API Plan 53A vs 53B
(OP)
Hi guys,
We have an agitator with these parameters :
T = 210 C
P = 18 Barg
The seal installed is EagleBurgmann HSL double seal.
The plan used is Plan 53A, are the process parameters OK with the 53A ? Or it's recommended to upgrade the flushing system to 53B ?
And, what is the max. temp. & pressure for Plan 53B ?
Regards,
We have an agitator with these parameters :
T = 210 C
P = 18 Barg
The seal installed is EagleBurgmann HSL double seal.
The plan used is Plan 53A, are the process parameters OK with the 53A ? Or it's recommended to upgrade the flushing system to 53B ?
And, what is the max. temp. & pressure for Plan 53B ?
Regards,





RE: API Plan 53A vs 53B
It is common to see Plan 53A system is these applications and the most common problem is operator error when topping up. It would be nice to better understand the reason for your question.
Plan 53A is suited for this application but you may need better circulaion or cooling coils in the vessel to disappate the heat. Plan 53B is a better system because it uses a bladder accumulator which makes topping up easier and less prone to reverse pressure failure.
Plan 53B can handle high Temp and pressure, for example I have used them at 160Bar and on other high temp applications of 350C.
If you advise what you are experiencing we may be able to point you in the right direction.
trust this helps.
RE: API Plan 53A vs 53B
The barrier fluid is oil SAE 30 with N2 gas.
The problem is that we are having leakage of the barrier fluid from the top of the seal.
By the way, what do you mean by topping up ?
Regards,
RE: API Plan 53A vs 53B
Topping up means when you refill the Plan 53B accumulator or Plan 53A vessel.
Also API682 recommends that the N2 pressure on a Plan 53A not exceed 10bar. please refer to API682 for this information.
RE: API Plan 53A vs 53B