ML052130060
| ML052130060 | |
| Person / Time | |
|---|---|
| Site: | Millstone  |
| Issue date: | 04/21/2004 |
| From: | Karwoski K, Ray Lorson NRC/NRR/ADPT, Plant Support Branch 1 |
| To: | Modes M NRC/RGN-I/DNMS/MSIB |
| References | |
| FOIA/PA-2005-0210 | |
| Download: ML052130060 (1) | |
Text
Kenneth Karwoski - Re: MILLSTONE 3 Page 1 From:
To:
Kenneth Karwoski; Raymond Lorson Date:
4/21/04 9:57AM
Subject:
Re: MILLSTONE 3 I vaguely recollect reading about this in their SG degradation assessment. Dent that prevented a probe with an acceptable fill-factor from going through. So they plugged it. This is about 3 or 4 outages ago. I will verify this when I get in the office and let you know.
BTW this outage, 10 plugged as follows: 1 AVB, 1 >40% loose part wear (bare weld wire about 3 inches long), 5 preventatively plugged for wear from loose parts, 3 plugged to cage a part.
This after an app. 1 OK tube expansion to look for loose parts that extended the SG Outage window by 32 hours3.703704e-4 days <br />0.00889 hours <br />5.291005e-5 weeks <br />1.2176e-5 months <br />.
>>>>> Raymond Lorson 04/21/04 08:45AM >>>
AZl Michael:
PIs follow-up with Ken on the Mill 3 question.
Ray
>>> Kenneth Karwoski 04/21/04 08:36AM >>> -r'9-L.
- Ray, JWe recently received a response to an RAI from Millstone 3. The RAI came out of our review of their annual steam generator inspection report. In the response to one of our questions, they indicated that one tube was obstructed in the tubesheet region and that this obstruction was service Induced.
Normally, we would just go back to the PM with some follow up questions such as what was the cause and what are the implications. However, I believe when I spoke with Michael Modes last week on the loose parts Info Notice, he indicated that he was at Millstone 3.
If Michael is there (or was there recently), can you have him give me (or Yamir Diaz - the reviewer for the annual report) a call. We wanted to touch base with him before we contact the licensee through the PM (to see if he had any insights on what may have been done in the past and whether they found anything similar this outage).
- Thanks, Ken 301-415-2752 CC:
Louise Lund; Yamir Diaz