Letter Sequence Request |
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TAC:MD9013, Control Room Habitability (Approved, Closed) |
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MONTHYEARRA-08-057, Unit 1, Application for Approval of License Transfers2008-06-20020 June 2008
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ML0817701612008-06-20020 June 2008
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RA-08-069, Unit 1, Application for Approval of License Transfers - Response to Request for Additional Information2008-07-17017 July 2008
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ML0822807952008-08-22022 August 2008
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ML0836403732008-12-23023 December 2008
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Project stage: Draft Other
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Project stage: Approval
ML0836404672008-12-23023 December 2008
Public Letter and Order - Order Approving Transfer of the Operating License and Conforming Amendment
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ML0827500472008-12-23023 December 2008
Order - Order Approving Transfer of the Operating License and Conforming Amendment
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ML0827705682009-01-0808 January 2009
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Project stage: Approval
TMI-09-009, Future Correspondence Concerning the License Renewal Application and a Revision to the License Renewal Commitment List2009-01-26026 January 2009
Future Correspondence Concerning the License Renewal Application and a Revision to the License Renewal Commitment List
Project stage: Other
2008-07-23
[Table View] |
Text
OFFICE OF THE SECRETARY CORRESPONDENCE CONTROL TICKET Date Printed: Jun 23, 2008 15:50 PAPER NUMBER:
ACTION OFFICE:
AUTHOR:
AFFILIATION:
ADDRESSEE:
SUBJECT:
ACTION:
DISTRIBUTION:
LETTER DATE:
ACKNOWLEDGED SPECIAL HANDLING:
LTR-08-0352 EDO David Lochbaum UCS Samuel Collins NRC's Oyster Creek "Bend before Break" cr LOGGING DATE: 06/23/2008
'i' EDO r,. EDMRJS DEDR DEDIA AO
.r..2 Appropriate RF 06/20/2008 No Made publicly available in ADAMS via EDO/DPC NOTES:
FILE LOCATION:
ADAMS DATE DUE:
DATE SIGNED:
Union of Concerned Scientists Citizens and Scientists for Environmental Solutions June 20; 2008 Samuel J. Collins, Regional Administrator United States Nuclear Regulatory Commission Region I 475 Allendale Road King of Prussia, PA 19406-1415
Subject:
NRC's Oyster Creek "Bend before Break" Criterion
Dear Mr. Collins:
Janet Tauro of the Grandmothers, Mothers, and More for Energy Safety (GRAMMES) copied me on her letter to you dated June 6, 2008. Ms. Tauro raised two points in her letter that caught my attention:
- 1. During the May 2008, annual assessment meeting, the NRC staff was reported to have assured the public that the NRC staff had determined that current drywell conditions met the 2.0 safety factor margin, but no documents existed to support that determination.
How did the NRC reach an undocumented determination? Was it via the straw poll process that worked so well in fall 2001 on Davis-Besse?
- 2. Mr. Richard Conte of your staff was reported to have informed Ms. Tauro that NRC inspectors "would stop refueling in October if they saw the drywell begin to buckle."
I'm familiar with the "leak before break" criterion for reactor coolant pressure boundary integrity and the studies supporting it. This "bend before break" criterion is new to me.
Could you point me to studies, analyses, or even straw polls that provide the technical and/or regulatory basis for it?
Sincerely, David Lochbaum Director, Nuclear Safety Project Washington Office: 1825 K Street NW Suite 800 e Washington DC 20006-1232 s 202-223-6133
- FAX:. 202-223-6162 Cambridge Headquarters: Two Brattle Square o Cambridge MA 02238-9105
- FAX: 617-864-9405 California Office: 2397 Shattuck Avenue Suite 203
- Berkeley CA 94704-1567 e 510-843-1872 e FAX: 510-843-3785 I