Thank you all for your valuable input. Let me see if I can answer some of the questions that were posted above. The pumps are all identical 3 stage vertical centrifugal type pumps. They each have a capacity of 1050 GPM, 555 ft total head, 74% eff. The pump curve is relatively flat which just...
We have 3 condensate pumps that pump directly out of a condensor into the deareator tank. I have tested the 3 motors and pumps recently and all are working within 10 to 15% of each other. They have all been rebuilt within the last year. They are sitting next to each other at a distance of 6...
I have been tasked with updating a presentation that is currently used to train power plant operators. The current presentation does a good job of showing how steam flows through the different levels of a boiler and turbine (i.e. superheat panels, finishing panels, condensor etc.) What I am...
Thanks that helps some. I will look at what you mentioned. The frequency first occurs at start up at 70% of running speed. At that speed the frequency is 1251 CPM, at running speed (1800RPM) the frequency is approx 1800CPM and that is where the .25ips comes in. We changed the lift setting...
I have a hotwell pump that is giving me fits. It has been operating great and running within acceptable limits for years. It runs around .13 ips vibration which is pretty much identical to the other 2 pumps. Around the 1st of summer it jumped up to .4 ips while the other 2 remained constant...
