ML081350163

Assessment Followup Letter 05/13/2008

ML081350163
Person / Time
Site:	Grand Gulf
Issue date:	05/13/2008
From:	Chamberlain D Division Reactor Projects III
To:	Douet J Entergy Operations
References
Download: ML081350163 (4)

Text

UNITED STATES NUC LE AR RE G UL AT O RY C O M M I S S I O N R E GI ON I V 612 EAST LAMAR BLVD , SU I TE 400 AR LI N GTON , TEXAS 76011-4125 May 13, 2008 James R. Douet, Vice President of Operations Grand Gulf Nuclear Station Entergy Operations, Inc.

P.O. Box 756 Port Gibson, MS 39150

SUBJECT:

ASSESSMENT FOLLOWUP LETTER - GRAND GULF NUCLEAR STATION

Dear Mr. Douet:

On May 7, 2008, the NRC staff completed a quarterly review of Grand Gulf Nuclear Station.

The assessment evaluated the performance indicators and inspection results for the first quarter of calendar year 2008. The purpose of this letter is to inform you of your safety performance during this period and our plans for a future inspection at your facility.

Overall, Grand Gulf operated in a manner that preserved the publics health and safety and fully met the cornerstone objectives. Plant performance for the most recent quarter of the assessment cycle was within the Regulatory Response Column of the NRCs Action Matrix based on the unplanned scrams per 7000 critical hours performance indicator crossing the threshold from Green to White. All inspection findings for the assessment period indicated performance at a level requiring no additional NRC oversight (Green).

On March 21, 2008, a reactor scram occurred when a current transformer relay sensed a suspected difference between the grid current and the output current from the main generator.

This resulted in a protective main generator trip and subsequent reactor scram. As a result, we have assessed Grand Gulf Nuclear Station performance to be in the Regulatory Response column of the NRCs Action Matrix. Therefore we tentatively plan to conduct a supplemental inspection using Inspection Procedure 95001, Inspection for One or Two White Inputs In a Strategic Performance Area, during the week of June 9, 2008. This inspection procedure is conducted to provide assurance that the root causes and contributing causes of risk significant performance issues are understood, the extent of condition and cause are identified, and the corrective actions are sufficient to prevent recurrence.

In accordance with 10 CFR 2.390 of the NRCs Rules of Practice, a copy of this letter will be made available electronically for public inspection in the NRC Public Document Room or from the Publicly Available Records (PARS) component of the NRCs document system (ADAMS).

ADAMS is accessible from the NRC web site at http://www.nrc.gov/reading-rm/adams.html (the Public Electronic Reading Room).

Entergy Operations, Inc. Please contact Richard W. Deese at 817-276-6573 with any questions you may have regarding this letter.

Sincerely,

/RA/

Dwight D. Chamberlain, Director Division of Reactor Projects Docket: 50-416 License: NPF-29 cc:

Senior Vice President Entergy Nuclear Operations P.O. Box 31995 Jackson, MS 39286-1995 Senior Vice President and COO Entergy Operations, Inc.

P.O. Box 31995 Jackson, MS 39286-1995 Vice President, Oversight Entergy Services, Inc.

P.O. Box 31995 Jackson, MS 39286-1995 Chief Energy & Transportation Branch Environmental Compliance and Enforcement Division Mississippi Department of Environmental Quality P.O. Box 10385 Jackson, MS 39289-0385 President Claiborne County Board of Supervisors P.O. Box 339 Port Gibson, MS 39150 Senior Manager Nuclear Safety & Licensing Entergy Services, Inc.

P.O. Box 31995 Jackson, MS 39286-1995

Entergy Operations, Inc. Manager, Licensing Entergy Operations, Inc.

P.O. Box 756 Port Gibson, MS 39150 Attorney General Department of Justice State of Louisiana P.O. Box 94005 Baton Rouge, LA 70804-9005 Office of the Governor State of Mississippi Jackson, MS 39201 Attorney General Assistant Attorney General State of Mississippi P.O. Box 22947 Jackson, MS 39225-2947 State Health Officer State Board of Health P.O. Box 1700 Jackson, MS 39215 Associate General Counsel Entergy Nuclear Operations P.O. Box 31995 Jackson, MS 39286-1995 Richard Penrod, Senior Environmental Scientist, State Liaison Officer Office of Environmental Services Northwestern State University Russsell Hall, Room 201 Natchitoches, LA 71497 Lisa R. Hammond, Chief Technological Hazards Branch National Preparedness Division FEMA Region VI 800 N. Loop 288 Denton, TX 76209 Conrad S. Burnside, Chief Technological Hazards Branch National Preparedness Division DHS/FEMA 3003 Chamblee Tucker Road Atlanta, GA 30341

Entergy Operations, Inc. Electronic distribution by RIV:

Regional Administrator (Elmo.Collins@nrc.gov)

DRP Director (Dwight.Chamberlain@nrc.gov)

DRP Deputy Director (Anton.Vegel@nrc.gov)

DRS Director (Roy.Caniano@nrc.gov)

DRS Deputy Director (Troy.Pruett@nrc.gov)

Senior Resident Inspector Rich.Smith@nrc.gov)

Branch Chief, DRP/C (Rick.Deese@nrc.gov)

Senior Project Engineer, DRP/C (Wayne.Walker@nrc.gov)

Team Leader, DRP/TSS (Chuck.Paulk@nrc.gov)

RITS Coordinator (Marisa.Herrera@nrc.gov)

Only inspection reports to the following:

DRS STA (Dale.Powers@nrc.gov)

J. Adams, OEDO RIV Coordinator (John.Adams@nrc.gov)

P. Lougheed, OEDO RIV Coordinator (Patricia.Lougheed@nrc.gov)

ROPreports GG Site Secretary (Nancy.Spivey@nrc.gov))

SUNSI Review Completed: WCW ADAMS: Yes No Initials: WCW Publicly Available Non-Publicly Available Sensitive Non-Sensitive R:_REACTORS\_GG\2008\GG Assessment Followup.doc ADAMS ML081350163 RIV:SPE:DRP/C C:DRP/C D:DRP WCWalker RDeese DDChamberlain

/RA/ /RA/ /RA/

04/30/2008 05/12/2008 05/12/2008 OFFICIAL RECORD COPY T=Telephone E=E-mail F=Fax