ML16315A169

Assessment Follow-Up Letter 2016

ML16315A169
Person / Time
Site:	Sequoyah
Issue date:	11/10/2016
From:	Joel Munday Division Reactor Projects II
To:	James Shea Tennessee Valley Authority
References
Download: ML16315A169 (3)

Text

UNITED STATES NUCLEAR REGULATORY COMMISSION REGION II 245 PEACHTREE CENTER AVENUE NE, SUITE 1200 ATLANTA, GEORGIA 30303-1257 November 10, 2016 Mr. Joseph Shea Vice President, Nuclear Licensing Tennessee Valley Authority 1101 Market Street, LP 3D-C Chattanooga, TN 37402-2801

SUBJECT:

ASSESSMENT FOLLOWUP LETTER FOR SEQUOYAH NUCLEAR PLANT UNIT 1

Dear Mr. Shea:

As a result of our quarterly review of plant performance, which was completed on October 20, 2016, the U.S. Nuclear Regulatory Commission (NRC) updated its assessment of Sequoyah Nuclear Plant Unit 1. The NRCs evaluation consisted of a review of performance indicators (PIs) and inspection results. This letter informs you of the NRCs assessment of your facility and supplements, but does not supersede, the mid-cycle letter issued on August 31, 2016.

The Unplanned Scrams per 7000 Critical Hours PI exceeded the Green-to-White threshold value in the third quarter of 2015. On July 15, 2016, the NRC completed a review of your corrective actions for the White PI using Inspection Procedure 95001, Supplemental Inspection for One or Two White Inputs in a Strategic Performance Area." The inspectors reviewed your root cause analysis for each event as well as your overarching root cause analysis that was performed to identify and correct any issues common to multiple events. The inspectors determined each root cause analysis performed on individual events appropriately identified the cause and corrective actions to address the individual event. In addition, the inspectors determined that the overarching root cause analysis identified common causes that had applicability to multiple events and developed appropriate corrective actions to address these common causes. The NRC concluded that the corrective actions taken were sufficient to meet the inspection objectives of the procedure. The NRCs inspection is documented in inspection report (IR) 05000327/2016008 which is publically available in the Agencywide Document Access and Management System using accession number ML16244A370.

The NRCs review of Sequoyah Nuclear Plant Unit 1s performance identified that the Unplanned Scrams per 7000 Critical Hours PI returned to Green in the third quarter of 2016.

Therefore, all the findings and performance indicators that input into the Action Matrix are Green. Accordingly, per the guidance in Inspection Manual Chapter (IMC) 0305, Operating Reactor Assessment Program, Sequoyah Nuclear Plant Unit 1 transitioned to the Licensee Response Column (Column 1) of the NRCs Action matrix, effective October 1, 2016.

J. Shea 2 In accordance with Title 10 of the Code of Federal Regulations (10 CFR) 2.390 Public inspection, exemptions, requests for withholding of the NRCs Agency Rules of Practice and Procedure, a copy of this letter will be available electronically for public inspection in the NRC Public Document Room, of from the Publicly Available records (PARS) component of NRCs Agencywide Document Access and Management System (ADAMS); accessible from the NRC Web site at http://www.nrc.gov/reading-rm/adams.html (the Public Electronic Reading Room).

Please contact Alan Blamey at 404-997-4415 with any questions you have regarding this letter.

Sincerely,

/RA/

Joel T. Munday, Director Division of Reactor Projects Docket Nos.: 50-327 License Nos.: DPR-77

________________ SUNSI REVIEW COMPLETE FORM 665 ATTACHED OFFICE RII:DRP RII:DRP RII:DRP SIGNATURE /RA/ /RA/ /RA/

NAME A Wilson A. Blamey J. Munday DATE 11/9/2016 11/9/2016 11/9/2016 E-MAIL COPY? YES NO YES NO YES NO YES NO YES NO YES NO YES NO