GNRO-2013/00093, 2013 Report of Changes and Errors to 10CFR50.46

2013 Report of Changes and Errors to 10CFR50.46

ML13344A980
Person / Time
Site:	Grand Gulf
Issue date:	12/06/2013
From:	Seiter J Entergy Operations
To:	Document Control Desk, Office of Nuclear Reactor Regulation
References
GNRO-2013/00093
Download: ML13344A980 (2)

Text

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~Entergy Entergy Operations, Inc.

P.o. Box 756 Port Gibson, Mississippi 39150 Tel: 601-437-2344 Jeffery A. Seiter Acting Licensing Manager Grand Gulf Nuclear Station GNRO-2013/00093 December 6, 2013 U.S. Nuclear Regulatory Commission AnN: Document Control Desk Washington, DC 20055-0001

SUBJECT:

2013 Report of Changes and Errors to 10CFR50.46 Grand Gulf Nuclear Station, Unit 1 Docket No. 50-416 License No. NPF-29

REFERENCES:

1. Letter GNRO-2012-00148, UReport of Changes and Errors to 10CFR50.46," dated December 6, 2012.

Dear Sir or Madam:

In accordance with 10CFR50.46 (a)(3)(ii) Grand Gulf Nuclear Station, Unit 1 (GGNS) is required to report to the Commission, at least annually, the estimated effect on the limiting Emergency Core Cooling System (ECCS) analysis caused by changes to or errors discovered in the acceptable ECCS evaluation.

Since the last 10CFR50.46 report dated December 6, 2012 [see reference 1], there have been no changes to or errors discovered in the GGNS ECCS evaluation model. The enclosed table summarizes the effects of all changes or errors to the current GGNS ECCS analysis performed by General Electric-Hitachi Nuclear Energy (GEH) for the current reporting period.

GNRO-2013/00093 Page 2 of 2 Evaluation Model: SAFERIGESTR-LOCA Estimated PCT Notification Nature of Change Effect (~PCT)

GE14 GNF2 N/A No changes or errors have been identified N/A N/A since the last 10 CFR 50.46 report for GGNS Cumutative sum of absolute magnitude of errors during this OaF OaF period.

The GGNS core is comprised of GE14 and GNF2 fuel types. The GNF2 is the limiting fuel type with a current licensing basis PCT of <1770°F, which is well below the 2200 of acceptance criterion of 10CFR50.46.

This letter does not contain any commitments. Should you have any questions or require additional information, please contact Jeffery A. Seiter at 601-437-2344.

Sincerely, JAS/cb cc: U.S. Nuctear Regulatory Commission ATTN: Mr. Mark Dapas, (w/2)

Regional Administrator, Region IV 1600 East Lamar Boulevard Arlington, TX 76011-4511 U. S. Nuclear Regulatory Commission AnN: Mr. Alan Wang, NRR/DORL (w/2)

Mail Stop OWFN 8 B1 Washington, DC 20555-0001 State Health Officer Mississippi Department of Health P. O. Box 1700 Jackson, MS 39215-1700 NRC Senior Resident Inspector Grand Gulf Nuclear Station Port Gibson, MS 39150