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

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 05000391/2010603-08

-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 05000391/2010603-08

-'Failure to Adequately

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