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!