ML20209D751

Responds to RAI on GL 92-01,rev 1,suppl 1, Rv Structural Integrity. as Result of NRC Review of Util Responses,Info Revised in Rvid & Rvid Version 2 Will Be Released

ML20209D751
Person / Time
Site:	Grand Gulf
Issue date:	07/09/1999
From:	Sekerak S NRC (Affiliation Not Assigned)
To:	Eaton W ENTERGY OPERATIONS, INC.
References
GL-92-01, GL-92-1, TAC-MA1191, NUDOCS 9907140010
Download: ML20209D751 (3)

Text

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p nog ht UNITED STATES

! . yl Cf ) j NUCLEAR ~ REGULATORY COMMISSION

( t.g r t WASHINGTON, D.c. 20555 4001

._ '% July 9, 1999 w-Mr. William A. Eaton

Vice President, Operations GGNS Entergy Operations, Inc.

P.O. Fox 756 Port Gioson, MS 39150

SUBJECT:

GRAND GULF NUCLEAR STATION, UNIT 1 - RESPONSE TO THE

REQUESTS FOR ADDITIONAL INFORMATION TO GENERIC LETTER 92-01, REVISION 1, SUPPLEMENT 1, " REACTOR VESSEL STRUCTURAL INTEGRITY" (TAC NO. MA1191)

Dear Mr. Eaton:

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 generic letter, the staff required addressees of the generic letter to:

(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 t ' ' hat data on their RPV integrity analyses relative to the

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requirements of Sections 50.60 and 50.61 to Part 50 of Title 10 of the Code of Federal Regulations (10 CFR 50.60 and 10 CFR 50.61), and to the requirements of Appendices G 1

and H to 10 CFR Pad 50. ,

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On August 14,1995, 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 Grand r

Gulf Nuclear Station. The staff evaluated your response to GL 92-01, Rev.1, Supp.1, and provided its conclusion relative to your response on August 22,1996. However, since the time b

jf-7 of the staff's 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

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addition, Chicago Bridge and Iron boiling water reactor 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 the structural integrity assessments for your plant. On April 27,1998, the staff issued a request for additional information (RAl) in regard to the alloying chemistries of beltline welds, your assessment of surveillance data for your facility,

_ pressure-temperature (P-T) limits, and pressurized thermal shock (PTS) assessment (only E

applicable to pressurized water reactors (PWRs)) for the Grand Gulf Nuclear Station. In general, with respect to the contents of the RAI, 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

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best-estimate chemistries for your beltline RPV welds on the structural integrity assessments 9907140010 990709 PDR P

ADOCK 05000416 pop hfh'hh f t

W. A. Eaton 2 July 9, 1999 1

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 basis for your plant.

You provided your response to the staff's RAI for the Grand Gulf Nuclear Station on August 3,1998. As a result of the staff'.s review of your responses to GL 92-01, Revision 1, GL 92-01, Rev.1, Supp.1, and the Supplement 1 RAI, 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 that 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 l l

necessary with regard to the structural integrity assessments. Future submittals on P-T limits, PTS (only applicable to PWRs), or upper shelf energy should reference the most current information.

This closes the staff's efforts in regard to TAC number MA1191. The staff appreciates your efforts in regard to this matter.

Sincerelv, ORIGIt(AL SIGNED BY S. Patrick Sekerak, Project Manager, Section 1 Project Directorate IV & Decommissioning ,

Division of Licensing Project Management ]

Office of Nuclear Reactor Regulation j i

l Docket No. 50-416 1 cc: See next page l DISTRIBUTION:

Docket File A. Lee PUBLIC OGC i I

PD#1V-1 Reading ACRS KBrockman, RIV To receive a copy of this document, indicate "C" in the box OFFICE PDIV-1/PM C- PDIV-1/Lp r th PDIV-1/SC ' C NAME PSekerakh LBerry h RGramm{lh DATE I / 7 /99 l / db [99 7 / Cl /99 DOCUMENT NAME: G:\PDIV-1 \GrandGulf\LTRMA11 d1.wpd OFFICIAL RECORD COPY ,

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Grand Gulf Nuclear Station cc: -

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Executive Vice President Attorney General

& Chief Operating Officer. Department of Justice Entergy Operations, Inc. State of Louisiana P. O. Box 31995 P. O. Box 94005 Jackson, MS 39286-1995 Baton Rouge, LA 70804 9005 Wise, Carter, Child & Caraway State Health Officer P. O. Box 651 State Board of Health Jackson, MS 39205 l P. O. Box 1700 Jackson, MS 39205 Winston & Strawn 1400 L Street, N.W. - 12th Floor Office of the Governor Washington, DC 20005-3502 State of Miseissippi Jackson, MS 39201 Director Division of Solid Waste Management Attorney General  !

Mississippi Department of Netural Asst. Attorney General Resources St& of Mississippi 1 P. O. Box 10385 P. O. Box 22947 Jackson, MS 39209 Jackson, MS 39225 President Vice President, Operations Support Claiborne County Board of Supervisors Entergy Operations, Inc. '

P. O. Box 339 P.O. Box 31995 Port Gibson, MS 39150 Jackson, MS 39286 1995 Regional Administrator, Region IV Director, Nuclear Safety U.S. Nuclear Regulatory Commission and Regulatory Affairs 611 Ryan Plaza Drive, Suite 1000 Entergy Operations, Inc.

Arlington,TX 76011 P.O. Box 756 Port Gibson, MS 39150 Senior Resident inspector U. S. Nuclear Regulatory Commission P. O. Box 399 Port Gibson, MS 39150 General Manager, GGNS Entergy Operations, Inc.

P. O. Box 756 Port Gibson, MS 39150 May 1999