ML20209B208
| ML20209B208 | |
| Person / Time | |
|---|---|
| Site: | Palisades, Quad Cities  |
| Issue date: | 06/29/1999 |
| From: | Pulsifer R NRC (Affiliation Not Assigned) |
| To: | Kingsley O COMMONWEALTH EDISON CO. |
| References | |
| GL-92-01, GL-92-1, TAC-MA1207, TAC-MA1208, NUDOCS 9907060300 | |
| Download: ML20209B208 (3) | |
Text
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k UNITED STATES g
j NUCLEAR REGULATORY COMMISSION 2
WASHINGTON, D.C. 30666-0001
.....p June 29,1999 Mr. Oliver D. Kingsley, President Nuclear Generation Group Commonwealth Edison Company Executive Towers West lli 1400 Opus Place, Suite 500 Downers Grove,IL 60515
SUBJECT:
CLOSURE OF THE RESPONSE TO THE REQUESTS FOR ADDITIONAL INFORMATION TO GENERIC LETTER 92-01, REVISION 1, SUPPLEMENT 1,
" REACTOR VESSEL STRUCTURAL l.NTEGRITY," FOR THE QUAD CITIES NUCLEAR POWER STATION, UNITS 1 AND 2 (TAC NOS. MA1207 AND MA1208)
Dear Mr. Kingsley:
On May 19,1995, the U.S. Nuclear Regulatory Commission (NRC) issued Generic Letter 92-01, Revision 1, Supplement 1 (GL 92-01, Rev.1, Supp.1), " Reactor Vessel Structural Integrity," to holders of nuclear operating licenses. In issuing the GL the staff required addressees of the GL to:
(1) identify, collect and report any new data pertinent to the analysis of structuralintegrity of the reactor pressure vessels (RPVs) at their nuclear plants, and (2) to assess the impact of that date on their RPV integrity analyses relative to the requirements of Sections 50.60 and 50.61 to Part 50 of Title 10 of the Code of Federal Reoulations (10 CFR 50.60 and 10 CFR 50.61), and to the requirements of Appendices G and H to Part 50 of Title 10 of the Code of Federal Reaulations (Appendices G and H to 10 CFR Part 50).
On August 17,1995, you submitted your initial response to GL 92-01, Rev.1, Supp.1. and provided the requested information relative the structural integrity assessment for the Quad Cities Nuclear Power Station, Units 1 and 2. The staff evaluated your response to GL 92-01, Rev.1, Supp.1, and provided its conclusion relative to your response on August 6,1996.
However, since the time of the staffs closure letter, the Combustion Engineering (CE) Owners Group and the Babcock and Wilcox (B&W) Owners Group have each submitted additional data regarding the alloying chemistries of beltline welds in CE and B&W fabricated vessels.
The additional alloying data were submitted in Topical Reports CE NPSD-1039, Revision 2, CE NPSD-1119, Revision 1, for CE fabricated RPV welds, and BAW-2325, Revision 1, for B&W fabricated RPV welds, in addition, Chicago Bridge and Iron (CB&l) BWR data were submitted in Topical Report BWRVIP-46. As a result of the efforts by CE and B&W, the staff determined g
that additional information was necessary relative to the structural integrity assessments for
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your plants. On May 4,1998, the staff issued a request for additional information (RAl)in regard to the alloying chemistries of beltline welds, your assessment of surveillance data form 9907060300 990629 ADOCK0500g4 DR
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O. Kingsley assessment (only applicable to PWRs) for the Quad Cities station. In general, with respect to the contents of the RAl, the staff requested that you reassess the alloying chemistries for the beltline welds and RPV surveillance welds relative to the chemistries provided in the applicable topical report, and provide the impact of any changes to the best-estimate chemistries for your belthne RPV welds on the structural integrity assessments for your facility relative to the requirements of 10 CFR 50.60,10 CFR 50.61, and Appendices G and H to 10 CFR Part 50, as
- applicable to the licensing bases for your plants.
You provided your response to the staff's RAI for Quad Cities on July 30,1998. As a result of the staffs review of your responses to GL 92-01, Revision 1, GL 02-01, Rev.1, Supp.1, and the RAl, the staff has revised the information in the Reactor Vessel Integrity Database (RVID) and is releasing it as RVID Version 2.
The new database diskettes are posted on the world-wide-web at a location which is linked to the NRC home page (http://www.nrc. gov /NRR/RVID/index.html). We recommend that you review this information. If the staff does not receive comments by September 1,1999, we will assume that the data entered into the RVID are acceptable for your plant. No additional information is necessary with regard to the structuralintegrity assessments. Future submittals on P-T limits, PTS (only applicable to PWRs), or upper shelf energy (USE) should reference the most current information.
This closes the staffs efforts in regard to TAC Nos. MA1207 and MA1208. The staff appreciates your efforts in regard to Wis matter.
Sincerely, Original signed by Robert M. Pulsifer, Project Manager, Section 2 Project Directorate 111 Division of Licensing Project Management Office of Nuclear Reactor Roguiation Docket Nos. 50-254 and 50-265 Distribution:
DocketFileL C. Moore cc: See next page PUBLIC R. Pulsifer
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OFFICIAL RECOR OPY
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sv O. Kingsley Quad Cities Nuclear Power Station.
Commonwealth Edison Company Units 1 tod 2 cc:
Commonwealth Edison Company Vice President-Law and Quad Cities Station Manager Regulatory Affairs 22710 206th Avenue North MidAmerican Energy Company Cordova, Illinois 61242-9740 One River Center Place 106 E. Second Street U.S. Nuclear Regulatory Commission P.O. Box 4350 Quad Cities Resident inspectors Office Davenport, Iowa 52808 22712 206th Avenue N.
Cordova, Illinois 61242 Mr. David Helwig Senior Vice President Chairman Commonwealth Edison Company Rock Island County Board Executive Towers West lli of Supervisors 1400 Op. as Place, Suite 900 1504 3rd Avenue Downers Grove, lilinois 60515 Rock Island County Of' e Bidg.
RockIsland, Illinois 61201 Mr. Gene H. Stanley PWR Vice President lilinois Department of Nuclear Safety Commonwealth Edison Company Office of Nuclear Facility Safety Executive Towers West lli 1035 Outer Park Drive 1400 Opus Place, Suite 900 Springfield, Illinois 62704 Downers Grove, Illinois 60515 Regional Administrator Mr. Christopher Crane U.S. NRC, Region lli BWR Vice President 801 Warrenville Road Commonwealth Edison Company Lisle, Illinois 60532-4351 Executive Towers West til 1400 Opus Place, Suite 900 William D. Leach Downers Grove, Illinois 60515 Manager-Nuclear _-
MidAmerican Energy Company Commonwealth Edison Company 907 Walnut Street Site Vice President-Quad Cities P.O. Box 657 22710 206th Avenue North Des Moines, Iowa 50303 Cordova, Illinois 61242-9740 Mr. R. M. Knch Commonwealth Edison Company Vice President - Regetatory Services Reg. Affairs Manager-Quad Cities Ccmmonwealth Edisori Company 22710 206th Avenue N.
Executive Towers West lli Cordova, Illinois 61242-9740 1400 Opus Place, Suite 500 Downers Grove, Illinois 60515 Ms. Pamela B. Stroebel Senior Vice President and General Counsel Document Control Desk-Licensing Commonwealth Edisen Company Commonwealth Edison Company P.O. Box 767 1400 Opus Place, Suite 400 Chicago, Illinois 60690-0767 Downers Grove, Illinois 60515