Pump Switching Program

I have just a general question about what other plants typically do with there pump switching program. I have always followed the guidelines that starting and stopping a pump is more risky than say false brinelling of a stationary bearing. I would much rather a operator, if possible turn the spare pumps by hand a quarter turn. There is the benefit of getting the pump up to operation temperature but at the risk of failing a mechanical seal early. there are other reasons to switch pumps of course but wanted to get other thoughts on this. 

Thank you in advance!

Jordan Watkins

Original Post

I go to a plant that switches their pumps on a regular basis, not sure what that is I go there monthly and the opposite pump from last month is running. In the 6-7 years I have been doing their vibration only maybe 3 or 4 pumps have needed changing. That's out of 120 pumps. I think backup equipment should be swapped at least monthly and ran, not just started. I really don't think it damages a pump or fan to do this. On another note they do change their pump oil every 6 months. I am sure that contributes to their pump reliability.

Jack

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