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Reference, Questions and Help => Nuke Q&A => Lessons Learned => Topic started by: wlrun3@aol.com on Apr 05, 2007, 11:21

Title: centrifugal charging pumps
Post by: wlrun3@aol.com on Apr 05, 2007, 11:21

   ...millstone 3 (four loop westinghouse 84) has centrifugal charging pumps as opposed to positive displacement...are there others...

Title: Re: centrifugal charging pumps
Post by: Nuclear NASCAR on Apr 05, 2007, 11:25

Callaway also has centrifigul charging pumps.  Of course, we're also a Westinghouse 4 loop.

Title: Re: centrifugal charging pumps
Post by: Roll Tide on Apr 05, 2007, 12:06

Sequoyah (4-loop W) also has CCP (PD abandoned years ago).

Turkey Point (3-loop W) still has PD pumps. Maintenance headache.

Title: Re: centrifugal charging pumps
Post by: alphadude on Apr 05, 2007, 05:40

Positive displacment pumps can present a real danger more so than cent. pump. they will pump no matter what even with the down stream valve closed and then KFB.

Title: Re: centrifugal charging pumps
Post by: TENN-1 on Apr 07, 2007, 11:55

D.C. Cook (four loop Westinghouse) has two centrifugal and one positive displacement per unit. We only run the centrifugal pump but we maintain both CCPs and the PDP. I've been here a decade and a half and have never seen the PDP run.

Title: Re: centrifugal charging pumps
Post by: alphadude on Apr 08, 2007, 04:55

true dat on those make up pumps, those beasts never tire and only probs i seen was where somebody isolated the seal water while running. they are solid technology from the past