ML091900514
| ML091900514 | |
| Person / Time | |
|---|---|
| Site: | Oyster Creek |
| Issue date: | 12/04/2008 |
| From: | Richmond J NRC Region 1 |
| To: | Conte R NRC Region 1 |
| References | |
| FOIA/PA-2009-0070 | |
| Download: ML091900514 (6) | |
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John Richmond, ý-
Thursday, December 04, 2008 1:09 PM Richard Conte OC REVISED [again] Exit Notes OC LRI 2008-07_Exit Notesrev-4.doc attached Wrtimd In ths meotd was deeted In acordance with the Freedom of InfonYMl"fL LAMP 5ons 0-I L/(Lt Mill"
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([148.184.99.10]) with mapi; Thu, 4 Dec 2008 13:08:21 -0500 Content-Type: application/ms-tnef; name="winmail.dat" Content-Transfer-Encoding: binary From: John Richmond <John.Richmond@nrc.gov>
To: Richard Conte <Richard.Conte@nrc.gov>
Date: Thu, 4 Dec 2008 13:08:43 -0500
Subject:
OC REVISED [again] Exit Notes Thread-Topic: OC REVISED [again] Exit Notes Thread-Index: AcIWOlghvAqkhXQaQMq38c2/qz6RDw==
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r-DeciýinaI Inf man"' - Offi e al TO 7 4'0 TO 5!Xi 9418111IT6 Oyster Creek License Renewal Commitments Inspection Exit Meeting - TBD
Introductions
" NRC Region 1
" NRC HQ
" NRC Residents
" AmerGen
" NJ DEP (Observers)
Excellent Overall Cooperation from everybody
>>> use of the Certrec Internet Database was quite helpful Special Thanks
- Pete Tamburro (LR Program Owner)
- Chris Hawkins (NDE Level-III)
- Cal Taylor & Jhansi Kandasamy Inspection Schedule Slippage
" LR outage schedule slipped due to unexpected issues
" Bay 11 Coating Blisters
- Bay 3 Moisture Barrier Seal Problem
" Cavity Leakage and Water Intrusion into 4 bays
" As a result, our inspection ran into a 2nd on-site week and a 3rd in-office week Documentation Team Report 45 days after the Exit Meeting (mid Jan)
Exec Summary of Inspection Results
- Satisfactory Actions to evaluate primary containment structural integrity Lti.
(b)(5)
These items were also commitments to Generic Letter 67-U5
" Strippable Coating to Prevent Water Intrusion
" Monitoring of Sand Bed Drain Lines
- Monitoring of Cavity Trough Drain Line
- For the selected samples, C (b)(5) 7
- Sampled 9 AMPs to Verify Commitment Implementation o No Problems or Issues Identified, with Three Exceptions S(b)(5)i
- Perform Full Scope inspections of sand bed region every other outage
" Monitor drywell trenches for water every refueling outage, until trenches are restored
- Verified 2 commitment changes were done iaw Exelon commitment management program
- Bolting Integrity Program (commitment 12)
- Rx Vessel Axial Weld Examination Relief Request (commitment 48)
(b)(5)
(b)(5)
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(1) Commitment 27, ASME Section XI, Subsection IWE, Item (2) Not Fully Implemented A strippable coating will be applied to the reactor cavity liner to prevent water intrusion into the gap between the drywell shield wall and the drywell shell during periods when the reactor cavity is flooded.
- The strippable coating initially limited leakage into the cavity drain trough at < 1 gpm. On Nov 7, the leakage rate took a step change to 4 to 6 gpm. Water was subsequently identified in 4 sand bed bays.
- This was also a previous commitment made in response to Generic Letter 87-05 (b)(5)
(2) Commitment 27, ASME Section Xl, Subsection IWE, Item (3) Not Fully Implemented Sand bed region drains will be monitored daily during refueling outages.
- Sand bed drains were remotely monitored by checking poly bottles, attached via tygon tubing to funnels hanging below the drain lines. The drain lines were not directly observed.
- This was also a previous commitment made in response to Generic Letter 87-05 (b)(5)
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(3) Commitment 27, ASME Section XI, Subsection IWE, Item (3).Not Fully Implemented Reactor cavity seal leakage trough drains and the drywell sand bed region drains will be monitored for leakage. Periodically.
- Drain line was found isolated during a boroscope examination to verify no line blockage.
- ?? This was also a previous commitment made in response to Generic Letter 87-05.,
(b)(5)
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Pages 6 through 7 redacted for the following reasons:
(b)(5)