ML12172A412: Difference between revisions

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| issue date = 06/18/2012
| issue date = 06/18/2012
| title = Tennessee Valley Authority - Reply to Notice of Violation 05000391-10-603-08 - Failure to Adequately Evaluate and Qualify Molded Case Circuit Breakers - Revised Response
| title = Tennessee Valley Authority - Reply to Notice of Violation 05000391-10-603-08 - Failure to Adequately Evaluate and Qualify Molded Case Circuit Breakers - Revised Response
| author name = Shea J W
| author name = Shea J
| author affiliation = Tennessee Valley Authority
| author affiliation = Tennessee Valley Authority
| addressee name =  
| addressee name =  
Line 14: Line 14:
| page count = 2
| page count = 2
}}
}}
See also: [[followed by::IR 05000391/2010603]]


=Text=
=Text=
{{#Wiki_filter: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
{{#Wiki_filter:Tennessee Valley Authority, 1101 Market Street, Chattanooga, Tennessee 37402 June 18, 2012 10 CFR 2.201 ATTN: Document Control Desk U.S. Nuclear Regulatory Commission Washington, D.C. 20555-0001 Sequoyah Nuclear Plant, Units 1 and 2 Facility Operating License Nos. DPR-77 and DPR-79 NRC Docket Nos. 50-327 and 50-328 Watts Bar Nuclear Plant, Unit 1 Facility Operating License No. NPF-90 NRC Docket No. 50-390 Watts Bar Nuclear Plant, Unit 2 Construction Permit No. CPPR-92 NRC Docket No. 50-391
}}
 
==Subject:==
Reply to Notice of Violation 05000391/2010603 Failure to Adequately Evaluate and Qualify Molded Case Circuit Breakers -
Revised Response
 
==References:==
: 1. NRC Letter, "Response to Corrective Actions for Watts Bar Unit 2 Notice of Violation (NOV) 05000391/2010603-08," dated May 18, 2012 (ML12139A052)
: 2. TVA Letter, Watts Bar Nuclear Plant (WBN) Unit 2 - Reply to Notice of Violation 05000391/2010603 'Failure to Adequately Evaluate and Qualify Molded Case Circuit Breakers," dated June 9, 2011 (ML11164A141)
By letter dated May 18, 2012 (Reference 1), the NRC informed the Tennessee Valley Authority (TVA) that corrective actions for Notice of Violation 05000391/2010603-08, "Failure to Adequately Evaluate and Qualify Molded Case Circuit Breakers," described in Reference 2, were inadequate to achieve full compliance with design control requirements of Title 10 of the Code of FederalRegulations (10 CFR), Part 50, Appendix B, Criterion III, "Design Control." The NRC requested that TVA amend their response to Printed on recycled paper
 
U.S. Nuclear Regulatory Commission Page 2 June 18, 2012 the NOV (which was issued for Watts Bar Nuclear Plant, Unit 2) with corrective actions that are sufficient to achieve full compliance with NRC regulations. The NRC further requested that TVA include in the response, any short-term operability and long-term corrective actions necessary pursuant to this issue at WBN, Unit 1 and Sequoyah Nuclear Plant (SQN) Units 1 and 2. The NRC stated that the response should specifically address how configuration control has been verified for these components and how applicable Institute of Electrical and Electronic Engineers (IEEE) standards are being 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 response to 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 an extension for the required submittal of the supplemental response to the NOV until July 20, 2012.
TVA requests additional time to prepare a comprehensive response that fully addresses how configuration control is verified and conformance with applicable IEEE standards are met at each of the four affected units (WBN 1 and 2 and SQN 1 and 2). The additional time will be used to ensure full coordination of the response between the construction and operating units within TVA.
TVA has determined that the non-conforming condition will not prevent the circuit breakers from performing their WBN Unit 1 and SQN Units 1 and 2 intended safety function. Documentation that supports TVA's determination of operability is available for 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 the 18th day of June, 2012.
Respec I J.   . hra a ager, Corporate Nuclear Licensing cc:     NRC   Regional Administrator - Region II NRC  Senior Resident Inspector - Sequoyah Nuclear Plant NRC  Senior Resident Inspector - Watts Bar Nuclear Plant, Unit I NRC  Senior Resident Inspector - Watts Bar Nuclear Plant, Unit 2}}

Latest revision as of 02:47, 12 November 2019

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  Tennessee Valley Authority icon.png
Issue date: 06/18/2012
From: James Shea
Tennessee Valley Authority
To:
Document Control Desk, Office of Nuclear Reactor Regulation
References
IR-10-603-08
Download: ML12172A412 (2)
v • d • e


Text

Tennessee Valley Authority, 1101 Market Street, Chattanooga, Tennessee 37402 June 18, 2012 10 CFR 2.201 ATTN: Document Control Desk U.S. Nuclear Regulatory Commission Washington, D.C. 20555-0001 Sequoyah Nuclear Plant, Units 1 and 2 Facility Operating License Nos. DPR-77 and DPR-79 NRC Docket Nos. 50-327 and 50-328 Watts Bar Nuclear Plant, Unit 1 Facility Operating License No. NPF-90 NRC Docket No. 50-390 Watts Bar Nuclear Plant, Unit 2 Construction Permit No. CPPR-92 NRC Docket No. 50-391

Subject:

Reply to Notice of Violation 05000391/2010603 Failure to Adequately Evaluate and Qualify Molded Case Circuit Breakers -

Revised Response

References:

1. NRC Letter, "Response to Corrective Actions for Watts Bar Unit 2 Notice of Violation (NOV)05000391/2010603-08," dated May 18, 2012 (ML12139A052)
2. TVA Letter, Watts Bar Nuclear Plant (WBN) Unit 2 - Reply to Notice of Violation 05000391/2010603 'Failure to Adequately Evaluate and Qualify Molded Case Circuit Breakers," dated June 9, 2011 (ML11164A141)

By letter dated May 18, 2012 (Reference 1), the NRC informed the Tennessee Valley Authority (TVA) that corrective actions for Notice of Violation 05000391/2010603-08, "Failure to Adequately Evaluate and Qualify Molded Case Circuit Breakers," described in Reference 2, were inadequate to achieve full compliance with design control requirements of Title 10 of the Code of FederalRegulations (10 CFR), Part 50, Appendix B, Criterion III, "Design Control." The NRC requested that TVA amend their response to Printed on recycled paper

U.S. Nuclear Regulatory Commission Page 2 June 18, 2012 the NOV (which was issued for Watts Bar Nuclear Plant, Unit 2) with corrective actions that are sufficient to achieve full compliance with NRC regulations. The NRC further requested that TVA include in the response, any short-term operability and long-term corrective actions necessary pursuant to this issue at WBN, Unit 1 and Sequoyah Nuclear Plant (SQN) Units 1 and 2. The NRC stated that the response should specifically address how configuration control has been verified for these components and how applicable Institute of Electrical and Electronic Engineers (IEEE) standards are being 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 response to 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 an extension for the required submittal of the supplemental response to the NOV until July 20, 2012.

TVA requests additional time to prepare a comprehensive response that fully addresses how configuration control is verified and conformance with applicable IEEE standards are met at each of the four affected units (WBN 1 and 2 and SQN 1 and 2). The additional time will be used to ensure full coordination of the response between the construction and operating units within TVA.

TVA has determined that the non-conforming condition will not prevent the circuit breakers from performing their WBN Unit 1 and SQN Units 1 and 2 intended safety function. Documentation that supports TVA's determination of operability is available for 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 the 18th day of June, 2012.

Respec I J. . hra a ager, Corporate Nuclear Licensing cc: NRC Regional Administrator - Region II NRC Senior Resident Inspector - Sequoyah Nuclear Plant NRC Senior Resident Inspector - Watts Bar Nuclear Plant, Unit I NRC Senior Resident Inspector - Watts Bar Nuclear Plant, Unit 2

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