ML20210B745

Informs That as Result of Staff Review of Licensee Responses to GL 92-01,rev 1 & Rev 1,suppl 1,staff Revised Info in Reactor Vessel Integrity Database & Releasing Database as Rvid Version 2

ML20210B745
Person / Time
Site:	Summer
Issue date:	07/22/1999
From:	Cotton K NRC (Affiliation Not Assigned)
To:	Gabe Taylor SOUTH CAROLINA ELECTRIC & GAS CO.
References
GL-92-01, NUDOCS 9907230221
Download: ML20210B745 (4)

Text

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NUCLEAR REGULATORY COMMISSION WASHINGTON, D. C. 2055o

• g , July 22,1999 Mr. Gary J. Taylor - i Vice President, Nuclear Operations  !

South Carolina Electric & Gas Company  !

Virgil C. Summer Nuclear Station )

Post Office Box 88 Jenkinsville, South Carolina 29065 l

SUBJECT:

V. C. SUMMER NUCLEAR STATION RE: CLOSURE OF THE REVIEW OF THE I RESPONSE TO THE GENERIC LETTER 92-01, REVISION 1, SUPPLEMENT 1, l

" REACTOR VESSEL STRUCTURAL INTEGRITY" l

Dear Mr. Taylor:

On May 19,1995, the U.S. Nuclear Regulatory Commission (NRC) issued Generic Lotter 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: j (1)- identify, collect and report any new data pertinent to the analysis of structural integrity of the reactor pressure vessels (RPVs) at their nuclear plants, and (2) to assess the impact of that data 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 Reaulations (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 16 and November 7,1995; you submitted your responses to GL 92-01, Rev.1, Supp.1, t nd provided the requested information relative to the structurai integrity assessments for the V. C. Summer Nucioar Station. The staff evaluated your responses to GL 92-01, Rev.1, Supp.1, and provided its conclusion relative to your recponses on August 9,1996. However, since the time of the staff's closure letter, the Combustio,1 Er.gineering (CE) Owners Group and the Babcock and Wilcox (B&W) Owners Group have each submitted additional data regarding the alloying chemistries of beltli. a 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 weids, 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 that additional information was necessary relative to We structural integrity auessments for all

. operating plants.

In mid-1998, the staff issued a request for additional information (RAI) to all owners group plants in regard to the alloying chemistries of beltline welds, the assessrnent of surveillance data, pressure-temperature (P-T) limits, and pressurized thermal shock (PTS) assessments for their plants. in the RAI, the staff requested the licensees to reassess the alloying chemistries \ O<

for the beltline welds and surveillance welds of their.RPV vessels relative to the chemistrier i provided in the topical reports mentioned above, and provide the impact of any changes to the j 9907 8" 230221 " ei" 990722^" ?CM B CDP 9

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Gary J. Taylor best-estimate chemistries for.the RPV beltline welds on the structural integrity assessments for their vessels relative to the requirements of 10 CFR 50.60,10 CFR 50.61, and Appenciices G and H to 10 CFR Part 50, as applicable to the licensing bases for their plants. For V. C. Summer, which is not a member of any owners groups, no RAI was issued in 1996.

However, additional staff review and conference phone calls with your personnel have been  ;

conducted regarding the issues similar to those in the 1996 RAI for other plants. i As a result of the staff's review of your responses to GL 92-01, Revision 1 and GL 92-01, Rev.1, Supp.1, the staff has revised the information in the Reactor Vessel Integrity Database l (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 structurat integrity assessments. Future submittals

-on P-T limits, PTS, or upper shelf energy (USE) should reference the most current information.

This closes the staff's efforts in regard to GL 92-01, Revision 1 and GL 92-01, Revision 1, Supplement 1. The staff appreciates your efforts in regard to this matter.

Sincerely, Karen Cotton, Project Manager, Section 1 Project Directorate 11 Division of Licensing Project Management Office of Nuclear Reactor Regulation Docket No. 50-395 4

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• Gary J. Taylor July 22, 1999 best-estimate chemistries for the RPV beltline welds on the structural integrity assessments for their vessels 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 their plants. For V. C. Surnmer, which is not a member of any owners groups, no RAI was issued in 1996.

However, additional staff review and conference phone calls with your personnel have been conducted regarding the issues similar to those in the 1996 RAI for other plants.

As a result of the staff's review of your responses to GL 92-01, Revision 1 and GL 92-01, Rev.1, Supp.1, 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, or upper shelf energy (USE) should reference the most current information.

This closes the staff's efforts in regard to GL 92-01, Revision 1 and GL 92-01, Revision 1, Supplement 1. The staff appreciates your efforts in regard to this matter.

Sincerely, ORIGINAL SIGNED BY:

Karen Cotton, Project Manager, Section 1 Project Directorate il Division of Licensing Project Management Office of Nuclear Reactor Regulation Docket No. 50-395 Distribution: Alee ACRS

'(Docket Filei BElliott i PUBLIC MMitchell i PDil-1 R/F KWichman  !

JZwolinski OGC {

DOCUMENT NAME: G:\PDil-1\ SUMMER \gl9202.wpd To receive a copy of this document, indicate in the box C= Copy w/o attachment / enclosure E= Copy with attachment / enclosure N = No copy OFFICE PDil-1/PM , PDll-1/LA b PDil/SC NAME otton CHawes C/M REmch Y DATE h[//99 N /d! /99 7/ /99 OFFICIAL RECORD COPY l

1 i

Mr. Gary J. Taylor VIRGIL C. SUMMER NUCLEAR STATION South Carolina Electric & Gas Company cc:

Mr. R. J. White J. B. Knotts, Jr., Esquire Nuclear Coordinator Winston & Strawn Law Firm S.C. Public Service Authority 1400 L Street, N.W.

c/o Virgil C. Summer Nuclear Station Washington, D.C. 20005-3502 Post Office Box 88, Mail Code 802 Jenkinsville, South Carolina 29065

{

Resident inspector / Summer NPS c/o U.S. Nuclear Regulatory Commission Poute 1, Box 64 Jenkinsville, South Carolina 29065 l

Chairman, Fairfield County Council Drawer 60 Winnsboro, South Carolina 29180 Mr. Virgil R. Autry, Director Division of Radioactive Waste Management Bureau of Land & Waste Management Department of Health & Environmental Control 2600 Bull Street Columbia, South Carolina 29201 Mr. Robert M. Fowlkes, Manager Operations South Carolina Electric & Gas Company Virgil C. Summer Nuclear Station, Mail Code 303 l

Post Office Box 88 Jenkinsville, South Carolina 29065 Ms. April R. Rice, Manager Nuclear Licensing & Operating Experience South Carolina Electric & Gas Company Virgil C. Summer Nuclear Station, Mail Code 830 Post Office Box 88 Jenkinsville, South Carolina 29065