irishal
Industrial
- Mar 8, 2005
- 39
Hi,
We have a problem on our site where we are pumping Jet aviation fuel from underground tanks into a pipeline. Over a short period of time the pump performance drops significantly until eventually is loses all discharge pressure. The pump, a vertical can pump, then needs to be vented and is always found full of gas. The suction pipe configuration from the tanks involves the Jet being taken out of the bottom of the tank and up above ground level (hence above liquid head level) before running downhill to the pump which is approximately 2m below the tank base. There is definately enough product in the tank. There is a 'babbling stream' noise from the pipework during the onset of the problem. We have checked calculations, etc, and the pumps are definately not cavitating.
Any ideas? Could the jet be vaporising in the pipeline?
We have a problem on our site where we are pumping Jet aviation fuel from underground tanks into a pipeline. Over a short period of time the pump performance drops significantly until eventually is loses all discharge pressure. The pump, a vertical can pump, then needs to be vented and is always found full of gas. The suction pipe configuration from the tanks involves the Jet being taken out of the bottom of the tank and up above ground level (hence above liquid head level) before running downhill to the pump which is approximately 2m below the tank base. There is definately enough product in the tank. There is a 'babbling stream' noise from the pipework during the onset of the problem. We have checked calculations, etc, and the pumps are definately not cavitating.
Any ideas? Could the jet be vaporising in the pipeline?