ML042530061
| ML042530061 | |
| Person / Time | |
|---|---|
| Site: | Columbia  |
| Issue date: | 08/31/2004 |
| From: | Coleman D Energy Northwest |
| To: | Document Control Desk, Office of Nuclear Reactor Regulation |
| References | |
| G02-04-149, GL-87-005 | |
| Download: ML042530061 (2) | |
Text
c 1.
ENERGY e
NORTHWEST People -Vision
- Solutions P.O. Box 968
- Richland, WA
- 99352-0968 August 31, 2004 G02-04-1 49 U S Nuclear Regulatory Commission Attn: Document Control Desk Washington, D.C. 20555-0001
Subject:
COLUMBIA GENERATING STATION, DOCKET 50-397 COMMITMENT CLARIFICATION SAND POCKET DRAIN HUMIDITY MONITORING
References:
(1) Letter G02-88-035, dated February 8, 1988, GC Sorensen (Energy Northwest) to NRC, Response to Generic Letter 87-05, Assessment of Measures to Mitigate and/or Identify' Potential Degradation of Containment (2) Letter G02-91-066, dated April 5, 1991, GC Sorensen (Energy
'Northwest) to NRC,.Response to Generic Letter 87-05, Assessment of Measu'res to Mitigate'abdr ldentify Potential Degradation of Containrment'
Dear Sir or Madam:
As a result of a review performed of commitments associated with measures established to identify and mitigate potential degradition of containment, a commitment was identified that requires clarification.
The Energy Northwest response to NRC Generic Letter 87-05 (Reference 1) included a commitment that humidity levels in each sand pocket drain line will be monitored prior to refueling pool flood-up and after pool draining to assure that no new moisture is being introduced into the sand pocket region due to refueling activities. A subsequent letter (Reference 2) from Energy Northwest to the NRC included a statement that inferred that this monitoring was performed twice yearly on all eight sand pocket drain lines for detection of increased moisture levels. At the time of this letter, annual refueling outages were perf6rmed so 'use of the term "twice yearly" was appropriate. However, now that refueling outages are performed on a twoyear frequency this term is incorrect and should be deleted..
.e' As noted in the original response, the intent of the humidity measurement commitment was to assure that no new moisture was being introduced due to refueling activities. As required by plant procedures, the humidity measurement continues to be performed
COMMITMENT CLARIFICATION Page 2 prior to refueling pool flood-up and after pool draining. With this clarification, the original commitment (Reference 1) remains valid and its intent has not been changed.
If you have questions or require additional information, please contact me at (509) 377-4342.
Respectfully, DW Coleman Manager, Regulatory Programs Mail Drop PE20 cc:
BS Mallett - NRC RIV WA Macon - NRC - NRR NRC Sr. Resident Inspector - 988C RN Sherman - BPA/1 399 TC Poindexter - Winston & Strawn