Thanks a lot Johnny for your help. There is one other possibility. We had no pressure transmitters installed on the suction line or balance line. We installed temporary transmitters and connected them to seperate recorders. My instrument guy tells me the times are synced on the recorders, but if...
Sorry, maybe i misled you, you are correct the balance line is taken from the balance disk and routed to the DA. The pressure control valve on this line is a manual valve. Its is set during commissioning and should not need to be changed. It is usually set about 1-2 bar higher than the DA...
Hi JJPellin,
I'll try answer all your questions.
- We've checked the pump performance and it looks fine.
- The deaerator level is also fine. This is verified by three level transmitters. DCS is 1 second interval, level is flat before, duraing and after the event.
- The balancing devide is a...
Hi pennpiper.
a) Two 100%. Standby pump starts and keeps process running when duty pump trisp.
b) Not sure what you are asking here
c) probably should have said. THe pumps were installed five years ago and have ran without issue until a few weeks back. So pipes are sized correctly.
Hi, i am having an issue with one of our boiler feed pumps. Randomly the pump is tripping due to low outlet flow (this is a protection in out control system). The pump is a Torishima multistage (10 stage) horizontal axis and is fed from a deaerator. I've chcked all the temperatures/pressures and...
