ML103190518
| ML103190518 | |
| Person / Time | |
|---|---|
| Site: | Grand Gulf  |
| Issue date: | 11/15/2010 |
| From: | Perino C Entergy Operations |
| To: | Office of Nuclear Reactor Regulation, Document Control Desk |
| References | |
| GNRO-2010100069 | |
| Download: ML103190518 (2) | |
Text
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.-'=.'=-Entergy GNRO-2010100069 November 15, 2010 u.s. Nuclear Regulatory Commission Attn: Document Control Desk Washington, DC 20555 Entergy Operations, Inc.
P.o. Box 756 Port Gibson, Mississippi 39150 Tel: 601-437-2800 Christina L. Perino Licensing Manager
Subject:
References:
Report of Changes and Errors to 10CFR50.46 Grand Gulf Nuclear Station, Unit 1 Docket No. 50-416 License No. NPF-29 1.
Letter GNRQ-2009/00064, "Report of Changes and Errors to 10CFR50.46," dated November 10,2009 2.
Letter GNRI-2008-00083, "GRAND GULF NUCLEARSTATION, UNIT 1 - ISSUANCE OF AMENDMENT RE: CHANGES TO TECHNICAL SPECIFICATION 5.6.5, CORE OPERATING LIMITS REPORT (TAC NO. MD7493)," dated October 16,2008.
Dear Sir or Madam:
In accordance with 10CFR50.46 (a)(3)(ii), Grand Gulf Nuclear Station (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 acceptable ECCS evaluations for information.
There have been no changes or errors associated with the GGNS ECCS analysis since the last 10 CFR 50.46 report [see reference 1).
The table below summarizes the current ECCS analysis performed by General Electric - Hitachi Nuclear Energy (GEH) using their NRC approved SAFERIGESTR - LOCA methodology.
Notification Nature of change Estimated peT Effect None No changes or errors have been identified since the NIA last 10 CFR 50.46 report for GGNS.
Sum of absolute magnitude of changes during this period 0
Cumulative sum of absolute magnitude of changes and errors prior 0
to this period Cumulative sum of absolute magnitude of changes and errors 0
including this period
GNRO-2010/00069 Page 2 Since the last 10 CFR 50.46 report provided to the NRC [reference 1], GGNS loaded a new fuel type (GNF2). However, the ATRIUM-10 fuel remains the limiting fuel type with a licensing basis PCT ~ 1880°F as reported in reference 2, which is well below the 2200°F acceptance criterion of 10 CFR 50.46.
This letter does not contain any commitments. Should you have any questions or require additional information, please contact Dennis M. Coulter at 601-437-6595.
Sincerely, CLP/DMC cc:
U.S. Nuclear Regulatory Commission ATIN: Mr. Elmo E. Collins, Jr. (w/2)
Regional Administrator, Region IV 612 East Lamar Blvd., Suite 400 Arlington, TX 76011-4125 U. S. Nuclear Regulatory Commission ATIN: Mr. Alan Wang, NRRlDORL (w/2)
Mail Stop OWFN 8 G14 Washington, DC 20555-0001 NRC Senior Resident Inspector Grand Gulf Nuclear Station Port Gibson, MS 39150