ML18267A078

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License Amendment Request to Incorporate Tornado Missile Risk Evaluator Into Licensing Basis - Extension of Response-to Request for Additional Information
ML18267A078
Person / Time
Site: Grand Gulf Entergy icon.png
Issue date: 09/22/2018
From: Emily Larson
Entergy Operations
To:
Document Control Desk, Office of Nuclear Reactor Regulation
References
GNRO 2018/00044
Download: ML18267A078 (3)


Text

  • ~Entergy Entergy Operations, Inc.

P.O. Box756 Port Gibson, MS 39150 Eric A. Larson Site Vice President Grand Gulf Nuclear Station Tel. (601) ~37-7500 GNRO 2018/00044 September 22, 2018

,U.S. Nuclear Regulatory Commission ATTN: Document Control Desk Washington, DC 20555~001 i'

SUBJECT:

License Amendment Request to Incorporate Tornado Missile Risk Evaluator into Licensing Basis - Extension of Response-to Request for Additional Information Grand Gulf Nuclear Station, Unit No. 1 Docket No. 50-416 License No. NPF-29

REFERENCES:

1. Grand Gulf Nuclear Station Letter GNR0-2017/00061, "License Amendment Request to Incorporate Tornado Missile Risk Evaluator into Licensing Basis", dated November 3, 2017.
2. Grand Gulf Nuclear Station Letter GNR0-2017/00077, "Supplemental Letter to License Amendment Request to Incorporate Tornado Missile Risk Evaluator into Licensing Basis", dated December 6, 2017.
3. United, States Nuclear Regulatory Commission Letter EPID L-2017-LLA-0371, "Grand Gulf Nuclear Station, Unit 1 - Request for Additional Information Related to Incorporate' the Tornado Missile Risk Evaluator 1

into Licensing Basis", dated July 20, 2018.

Dear Sir or Madam:

By letter dated July 20, 2018, Nuclear Regulatory Commission (NRC) sent a Request for Additional Information (RAI) related to incorporation of.the Tornado Missile Risk Evaluator (TMRE) into the Grand Gulf Nuclear Station (GGNS) licensing basis. Recent changes in the Missile Impact Parameter values in the model have resulted in the need to reanalyze the GGNS TMRE. As discussed in a telephone conference on September 7; 2018,, with Eva Brown, the NRC Project Manager, this will result in a delay in the GGNS RAI response from September 24, 2018 to October 24, 2018.

GNR0-2018/00044 Page 2 of 3 Should you have any questions concerning the content of this letter, please contact Douglas Neve, Manager Regulatory Assurance, at 601-437-2103.

Sincerely,

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Eric A. Larson Site Vice President Grand Gulf Nuclear Station EAUrws cc: (See Next Page)

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GNR0-2018/00044 Page 3 of 3 cc: NRC Senior Re$ident Inspector Grand Gulf Nuclear Station Port Gibson, MS 39150 U.S. Nuclear Regulatory Commission ATTN: Document Control Desk Washington, DC 20555-0001 I,

  • U.S. Nuclear Regulatory Commission ATTN: Ms. Jennifer Bridges 1600 East Lamar Boulevard Arlington,, TX 76011-4511

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