ML14363A388

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LTR-14-0729 - Tom Gurdziel Email Pressurized-Water Reactor Loose Parts Monitor Alarm at San Onofre Nuclear Generating Station (SONGS)
ML14363A388
Person / Time
Site: San Onofre  Southern California Edison icon.png
Issue date: 12/28/2014
From: Tom Gurdziel
Public Commenter
To: Macfarlane A
NRC/Chairman
AMT / Victor Dricks, Kriss Kennedy
Shared Package
ML14363A389 List:
References
LTR-14-0729
Download: ML14363A388 (1)


Text

CHAIRMAN Resource From: Tom Gurdziel <tgurdziel@twcny.rr.com>

Sent: Sunday, December 28, 2014 7:29 PM To: CHAIRMAN Resource Cc: Dricks, Victor; Screnci, Diane; Mitlyng, Viktoria; Michael Mulligan; Bridget Frymire

Subject:

PWR Loose Parts Monitor: A Repeating Nuisance Alarm?

Good morning, As I was throwing away my no longer useful, handwritten comments on the SONGS replacement steam generators, I noticed a problem that I do not believe has been addressed by the Nuclear Regulatory Commission.

According to my notes, the SONGS AIT report, (ML12188A748), describes about 30 "valid" vibration and loose parts alarms at San Onofre. My recollection is that these alarms were described as valid although no cause had been identified for any alarm.

Does it make sense to keep in service, inaccurate PWR monitoring equipment?

Thank you, Tom Gurdziel On page 22 of the referenced report, you will find that all the alarms apparently occurred between February 18, 2011 and January 31, 2012. (This would not be even one complete year.)

Is there any NRC group responsible for seeing that PWR nuisance alarms get addressed? Is there any recommended response time?

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