Seal Plan 52
Seal Plan 52
(OP)
Hi all,
I would like to know about a pressure guage range if a pump is developing 12 and 26 barg pressure.
In my refinery, we are facing problem seal pot high pressure alarm and when asked from operator, he is replying Pressure is zero. our maintenance team installed a pressure guage with range of 0 to 40 barg.
I need your assistance with reference for correct local pressure guage range.
Thanks
10815L
I would like to know about a pressure guage range if a pump is developing 12 and 26 barg pressure.
In my refinery, we are facing problem seal pot high pressure alarm and when asked from operator, he is replying Pressure is zero. our maintenance team installed a pressure guage with range of 0 to 40 barg.
I need your assistance with reference for correct local pressure guage range.
Thanks
10815L





RE: Seal Plan 52
RE: Seal Plan 52
Cheers,
gr2vvessels
RE: Seal Plan 52
The pressure gauge needs to be appropriate for the maximum pressure which it may see. If your flare runs at 0.2 barg and the pump suction pressure is 5 barg, then a 40 barg gauges is not appropriate. An appropriate gauge might have a full scale of 5 barg or perhaps 10 barg. Keep in mind, you not need to have the maximum pressure in the center of the gauge range. You only need to be able to distinguish a leaking seal from a seal that is not leaking. And, of course, you do not want the gauge to fail from overpressure in the event of a seal failure.
If you want a better reply, you need to provide your flare pressure, suction pressure, discharge pressure and pump configuration.
Johnny Pellin
RE: Seal Plan 52
I'm not talking about one pump, here is many pumps in my refinery. Flare pressure is even less than 0.2 barg.
The acutal problem is, seal pot high pressure alarm is coming frenquently and set value is 0.5barg for pressure switch and pressure is on pressure guage always not readable may be due to high range.
I want to know about the standards for pressure guage specification.
Thanks
10815L
RE: Seal Plan 52
RE: Seal Plan 52
Johnny Pellin
RE: Seal Plan 52
Switch setting is generally at 0.7 bar pressure.
In view of this I would recommend that whatever is maximum stuffing box pressure, if a pressure gauge is selected for that range should be sufficient.
Even in the case of total seal failure buffer fluid pressure will not be even nearer to stuffing box pressure.