ML12172A412

Tennessee Valley Authority - Reply to Notice of Violation 05000391-10-603-08 - Failure to Adequately Evaluate and Qualify Molded Case Circuit Breakers - Revised Response

ML12172A412
Person / Time
Site:	Watts Bar, Sequoyah
Issue date:	06/18/2012
From:	Shea J W Tennessee Valley Authority
To:	Document Control Desk, Office of Nuclear Reactor Regulation
References
IR-10-603-08
Download: ML12172A412 (2)

See also: IR 05000391/2010603

Text

Tennessee Valley Authority, 1101 Market Street, Chattanooga, Tennessee 37402June 18, 201210 CFR 2.201ATTN: Document Control DeskU.S. Nuclear Regulatory CommissionWashington, D.C. 20555-0001Sequoyah Nuclear Plant, Units 1 and 2Facility Operating License Nos. DPR-77 and DPR-79NRC Docket Nos. 50-327 and 50-328Watts Bar Nuclear Plant, Unit 1Facility Operating License No. NPF-90NRC Docket No. 50-390Watts Bar Nuclear Plant, Unit 2Construction Permit No. CPPR-92NRC Docket No.50-391Subject: Reply to Notice of Violation 05000391/2010603-08 -Failure toAdequately Evaluate and Qualify Molded Case Circuit Breakers -Revised ResponseReferences:1. NRC Letter, "Response to Corrective Actions for Watts Bar Unit 2Notice of Violation (NOV)05000391/2010603-08," datedMay 18, 2012 (ML12139A052)2. TVA Letter, Watts Bar Nuclear Plant (WBN) Unit 2 -Reply to Notice ofViolation 05000391/2010603-08 -'Failure to Adequately Evaluate andQualify Molded Case Circuit Breakers," dated June 9, 2011(ML1 1164A141)By letter dated May 18, 2012 (Reference 1), the NRC informed the Tennessee ValleyAuthority (TVA) that corrective actions for Notice of Violation 05000391/2010603-08,"Failure to Adequately Evaluate and Qualify Molded Case Circuit Breakers," described inReference 2, were inadequate to achieve full compliance with design controlrequirements of Title 10 of the Code of Federal Regulations (10 CFR), Part 50, AppendixB, Criterion III, "Design Control." The NRC requested that TVA amend their response toPrinted on recycled paper

U.S. Nuclear Regulatory CommissionPage 2June 18, 2012the NOV (which was issued for Watts Bar Nuclear Plant, Unit 2) with corrective actionsthat are sufficient to achieve full compliance with NRC regulations. The NRC furtherrequested that TVA include in the response, any short-term operability and long-termcorrective actions necessary pursuant to this issue at WBN, Unit 1 and SequoyahNuclear Plant (SQN) Units 1 and 2. The NRC stated that the response shouldspecifically address how configuration control has been verified for these componentsand how applicable Institute of Electrical and Electronic Engineers (IEEE) standards arebeing met for all known Heinemann molded case circuit breaker configurations in safety-related applications.In Reference 1, the NRC stated that TVA is required to submit a supplemental responseto this NOV within 30 days. The NRC further stated that where good cause is shown,consideration will be given to extending the response time. TVA is requesting anextension for the required submittal of the supplemental response to the NOV untilJuly 20, 2012.TVA requests additional time to prepare a comprehensive response that fully addresseshow configuration control is verified and conformance with applicable IEEE standardsare met at each of the four affected units (WBN 1 and 2 and SQN 1 and 2). Theadditional time will be used to ensure full coordination of the response between theconstruction and operating units within TVA.TVA has determined that the non-conforming condition will not prevent the circuitbreakers from performing their WBN Unit 1 and SQN Units 1 and 2 intended safetyfunction. Documentation that supports TVA's determination of operability is availablefor inspection and will be included, as required, in TVA's response to Reference 1.If you have any questions relating to this matter, please contact Gene Cobey at 423-751-3275.I declare under penalty of perjury that the foregoing is true and correct. Executed on the18th day of June, 2012.Respec IJ. .hraa ager, Corporate Nuclear Licensingcc: NRC Regional Administrator -Region IINRC Senior Resident Inspector -Sequoyah Nuclear PlantNRC Senior Resident Inspector -Watts Bar Nuclear Plant, Unit INRC Senior Resident Inspector -Watts Bar Nuclear Plant, Unit 2