ML12333A218

RAI for the Review of the GGNS LRA

ML12333A218
Person / Time
Site:	Grand Gulf
Issue date:	11/30/2012
From:	Ferrer N License Renewal Projects Branch 1
To:	Mike Perito Entergy Operations
Ferrer N, 415-1045
References
TAC ME7493
Download: ML12333A218 (4)

Text

UNITED STATES NUCLEAR REGULATORY COMMISSION WASHINGTON, D.C. 20555-0001 November 30,2012 Mr. Michael Perito Vice President, Site Entergy Operations, Inc.

P.O. Box 756 Port Gibson, MS 39150

SUBJECT:

REQUESTS FOR ADDITIONAL INFORMATION FOR THE REVIEW OF THE GRAND GULF NUCLEAR STATION LICENSE RENEWAL APPLICATION (TAC NO. ME7493)

Dear Mr. Perito:

By letter dated October 28, 2011, Entergy Operations, Inc., submitted an application pursuant to Title 10 of the Code of Federal Regulations Part 54, to renew the operating license for Grand Gulf Nuclear Station, Unit 1, for review by the U.S. Nuclear Regulatory Commission (NRC or the staff). The staff is reviewing the information contained in the license renewal application and has identified, in the enclosure, areas where additional information is needed to complete the review.

These requests for additional information were discussed with Jeff Seiter, and a mutually agreeable date for the response is within 30 days from the date of this letter. If you have any questions, please contact me at 301-415-1045 or bye-mail nathaniel.ferrer@nrc.gov.

Sincerely, Nathaniel Ferrer, Project Manager Projects Branch 1 Division of License Renewal Office of Nuclear Reactor Regulation Docket No. 50-416

Enclosure:

As stated cc w/encl: Listserv

GRAND GULF NUCLEAR STATION LICENSE RENEWAL APPLICATION REQUESTS FOR ADDITIONAL INFORMATION-SET 43 RAI4.3-5c Background. In response to request for additional information (RAI) 4.3-5b, part (a), dated October 22, 2012, the applicant revised the time-limited aging analysis (TLAA) disposition of certain non-Class 1 non-piping components that have cumulative usage factor (CUF) values for their fatigue design. However, the applicant did not demonstrate that the design number of cycles used in the original analysis of the expansion joints in the standby liquid control (at tank outlet and pump inlets), high pressure core spray (diesel exhaust), and compressed air (air accumulators) will not be exceeded during the period of extended operation, as requested in RAI4.3-5b.

Issue. As identified in RAI 4.3-5b, the staff noted that it is not adequate to use the "qualified cycles" as a demonstration that the analyses for these expansion joints remains valid for the period of extended operation in accordance with 10 CFR 54.21(c)(1)(i). In accordance with 10 CFR 54.21(c)(1)(i), it must be demonstrated that the "design cycles" used in the analyses for these expansion joints will not be exceeded after 60 years of operation (e.g., claiming a design cycle limit of 1200 thermal cycles for the high pressure core spray diesel exhaust joint without demonstrating that the plant actual operation would not exceed this 1200-cycle assumption is not an adequate justification under 10 CFR 54.21 (c)(1)(i>>.

The applicant also did not revise the updated final safety analysis report (UFSAR) supplement in LRA Section A.2.2.2 indicating that, for certain non-Class 1 expansion joints, the metal fatigue TLAAs have been projected to the end of the period of extended operation in accordance with 10 CFR 54.21 (c)(1)(ii).

Request.

a. Supplement RAI 4.3-5b's response to provide, for non-Class 1 expansion joints discussed above, adequate justification for the disposition of 10 CFR 54.21(c)(1)(i), by demonstrating that the number of cycles used in the design analysis will not be exceeded during the period of extended operation (i.e., cycles 'from plant actual operation will not exceed the number of design cycles).

b. Revise UFSAR supplement in LRA Section A.2.2.2 indicating that, for certain non-Class 1 expansion joints, the metal fatigue TLAAs have been projected to the end of the period of extended operation in accordance with10 CFR 54.21 (c)(1)(ii).

ENCLOSURE

November 30,2012 Mr. Michael Perito Vice President, Site Entergy Operations, Inc.

P. O. Box 756 Port Gibson, MS 39150 SUB~'ECT: REQUESTS FOR ADDITIONAL INFORMATION FOR THE REVIEW OF THE GRAND GULF NUCLEAR STATION LICENSE RENEWAL APPLICATION (TAC NO. ME7493)

Dear Mr. Perito:

By letter dated October 28, 2011, Entergy Operations, Inc., submitted an application pursuant to Title 10 of the Code of Federal Regulations, Part 54, to renew the operating license for Grand Gulf Nuclear Station, Unit 1, for review by the U.S. Nuclear Regulatory Commission (NRC or the staff). The staff is reviewing the information contained in the license renewal application and has identified, in the enclosure, areas where additional information is needed to complete the review.

These requests for additional information were discussed with Jeff Seiter, and a mutually agreeable date for the response is within 30 days from the date of this letter. If you have any questions, please contact me at 301-415-1045 or bye-mail nathaniel.ferrer@nrc.gov.

Sincerely, IRA!

Nathaniel Ferrer, Project Manager Projects Branch 1 Division of License Renewal Office of Nuclear Reactor Regulation Docket No. 50-416

Enclosure:

As stated cc w/encl: Listserv DISTRIBUTION: See following pages ADAMS Accession No.: ML12333A218 *concurred via email OFFICE LA:RPB1:DLR* PM:RPB1 :DLR BC:RPB1 :DLR PM: RPB1 :DLR NAME IKing NFerrer DMorey NFerrer DATE 11/29/12 11/30/12 11/30/12 11/30/12 I OFFICIAL RECORD COpy

Letter to M. Perito from N. Ferrer dated November 30, 2012

SUBJECT:

REQUESTS FOR ADDITIONAL INFORMATION FOR THE REVIEW OF THE GRAND GULF NUCLEAR STATION LICENSE RENEWAL APPLICATION DISTRIBUTION:

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