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  
{{#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
Valley Authority, 1101 Market Street, Chattanooga, Tennessee  
 
37402 June 18, 2012 10 CFR 2.201 ATTN: Document Control Desk U.S. Nuclear Regulatory  
==Subject:==
Commission
Reply to Notice of Violation 05000391/2010603 Failure to Adequately Evaluate and Qualify Molded Case Circuit Breakers -
Washington, D.C. 20555-0001
Revised Response
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  
==References:==
License No. NPF-90 NRC Docket No. 50-390 Watts Bar Nuclear Plant, Unit 2 Construction  
: 1. NRC Letter, "Response to Corrective Actions for Watts Bar Unit 2 Notice of Violation (NOV) 05000391/2010603-08," dated May 18, 2012 (ML12139A052)
Permit No. CPPR-92 NRC Docket No. 50-391 Subject: Reply to Notice of Violation  
: 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)
05000391/2010603-08
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
-Failure to Adequately  
 
Evaluate and Qualify Molded Case Circuit Breakers -Revised Response References:
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.
1. NRC Letter, "Response  
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.
to Corrective  
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.
Actions for Watts Bar Unit 2 Notice of Violation (NOV) 05000391/2010603-08," dated May 18, 2012 (ML12139A052)
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.
2. TVA Letter, Watts Bar Nuclear Plant (WBN) Unit 2 -Reply to Notice of Violation  
If you have any questions relating to this matter, please contact Gene Cobey at 423-751-3275.
05000391/2010603-08
I declare under penalty of perjury that the foregoing is true and correct. Executed on the 18th day of June, 2012.
-'Failure to Adequately  
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}}
Evaluate and Qualify Molded Case Circuit Breakers," dated June 9, 2011 (ML1 1164A141)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 Federal Regulations
(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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