ML20094M879
| ML20094M879 | |
| Person / Time | |
|---|---|
| Site: | Prairie Island  |
| Issue date: | 11/17/1995 |
| From: | Wadley M NORTHERN STATES POWER CO. |
| To: | NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM) |
| References | |
| GL-92-01, GL-92-1, NUDOCS 9511270276 | |
| Download: ML20094M879 (4) | |
Text
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,s Northern States Power Company Prairie Island Nuctaar Generating Plant 1717 Wakonade Dr. East Welch, Minnesota 55089 November 17,1995 Generic Letter 92-01 l
U S Nuclear Regulatory Commission j
Attn: Document Control Desk Washington, DC 20555-0001 l
PRAIRIE ISLAND NUCLEAR GENERATING PLANT Docket Nos. 50-282 License Nos. DPR-42 50-306 DPR-60 Response to Generic Letter 92-01, Revision 1, Supplement 1 Reactor Vessel Structural Integrity Generic Letter 92-01, Revision 1 was issued to obtain information needed to assess compliance with requirements and commitments regarding reactor vesselintegrity in view of certain concerns raised in the staff's review of reactor vessel integrity for the Yankee Nuclear Power Station. Prairie Island responded to the Generic Letter 92-01, Revision 1, and subsequent staff requests for information, by letters dated July 6, 1992, November 24,1993, March 31,1994, and May 19,1994. Generic Letter 92-01, Revision 1, Supplement 1, (dated May 19,1995), was issued to require that all addressees identify, collect and report any new data pertinent to analysis of structural integrity of their reactor vessels and to assess the impact of the data on their reactor pressure vessel integrity analysis. The Generic Letter requested that we provide, within 90 days, a description of those actions taken or planned to locate all data relevant to the determination of RPV integrity, or an explanation of why the existing data base is considered complete as previously submitted We submitted that information on August 17,1995.
The Generic Letter also requested that we provide, within 6 months, n
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1 USNRC NORTHERN STATES POWER COMPANY November 17,1995
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l a written response to parts (2), (3), and (4) of the (Generic Letter required]
information.
I The following provides our written responses:
REQUIRED INFORMATION (2):
an assessment of any change in best-estimate chemistry based on consideration of all relevant data;
RESPONSE
We have looked at all relevant known data and no change is required.
REQUIRED INFORMATION (3):
a determination of the need for use of the ratio procedure in accordance with the established Position 2.1 of Regulatory Guide 1.99, Revision 2, for those licensees that use surveillance data to provide a basis for the RPV integrity evaluation; and
RESPONSE
This is not applicable as we stated in our previous submittal, dated July 6,1992.
REQUIRED INFORMATION (4);
a written report providing any newly acquired data as specified above and (1) the results of any necessary revisions to the evaluation of RPV integrity in accordance with the requirements of 10 CFR 50.60,10 CFR 50.61, Appendices G and H to 10 CFR Part 50, and any potentialimpact on the LTOP or P-T limits i
in the technical specifications or (2) a certification that previously submitted evaluation remain valid. Revised evaluations and certifications should include consideration of Position 2.1 of Regulatory Guide 1.99, Revision 2, as applicable, and any new data.
RESPONSE
We hereby certify that our previously submitted evaluation remains valid.
9201FINL. DOC
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i USNRC NORTHERN STATES POWER COMPANY November 17,1995 Page 3 This letter contains no new NRC commitments.
Please contact Jack Leveille (612-388-1121, Ext. 4662) if you require further information.
M
. Michael D Wadley Plant Manager Prairie Island Nuclear Generating Plant c:
Regional Administrator - Ill, NRC NRR Project Manager, NRC Sr Resident inspector, NRC J Silberg Attachments: Affidavit to the US Nuclear Regulatory Commission 9201FINL. DOC
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6" UNITED STATES NUCLEAR REGULATORY COMMISSION NORTHERN STATES POWER COMPANY PRAIRIE ISLAND NUCLEAR GENERATING PLANT DOCKET NO. 50-282 DOCKET NO. 50-306 Response to Generic Letter 92-01, Revision 1, Supplement 1 Reactor Vessel Structural Intearity Northem States Power Company, a Minnesota corporation, by this letter dated November 17,1995 hereby submits information required by Generic Letter 92-01, Revision 1, Supplement 1 for the Prairie Island Nuclear Generating Plant.
This letter contains no restricted or other defense information.
NORTHERN STATES POWER COMPANY By Mr Michael D Wadley Plant Manager Prairie Island Nuclear Generating Plant On this day of efore me a notary public in and for said County, personally appeared, Michael D Wadley, Plant bla' nager, Prairie Island Nuclear Generating Plant. and being first duly sworn acknowledged that he is authorized to execute this document on behalf of Northern States Power Company, that he knows the contents thereof, and that to the best of his knowledge, information, and belief the statements made in it are true and that it is not interposed for delay.
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