ML11066A000
| ML11066A000 | |
| Person / Time | |
|---|---|
| Site: | Watts Bar  |
| Issue date: | 03/04/2011 |
| From: | Ogle C NRC/RGN-II/DCI |
| To: | Bhatnagar A Tennessee Valley Authority |
| References | |
| EA-10-195, IR-10-603 | |
| Download: ML11066A000 (6) | |
Text
UNITED STATES NUCLEAR REGULATORY COMMISSION REGION II MARQUIS ONE TOWER 245 PEACH TREE CENTER AVENUE, NE ATLANTA, GEORGIA 30303-1257 March 4, 2011 EA-10-195 Mr. Ashok S. Bhatnagar Senior Vice President Nuclear Generation Development and Construction Tennessee Valley Authority 6A Lookout Place 1101 Market Street Chattanooga, TN 37402-2801
SUBJECT:
RESPONSE TO CORRECTIVE ACTIONS FOR NOTICE OF VIOLATION (NOV)05000391/2010603-08
Dear Mr. Bhatnagar:
Thank you for your letter dated November 24, 2010 (ML103300217), in which you admitted that a violation occurred and for the information you presented during our meeting of December 16, 2010 (ML103230195), concerning your corrective actions to address NOV 05000391/2010603-08 dated August 5, 2010. The NOV described a violation involving the failure to adequately qualify and evaluate Molded Case Circuit Breakers (MCCBs).
The corrective actions you prescribe for the violation do not appear to be adequate to achieve full compliance with the design control requirements of 10 CFFR 50, Appendix B Criterion III.
Your methodology appears to be based on a premise that the seismic testing of MCCBs does not need to simulate their actual configuration if they are rigidly mounted. To support your premise, you cited IEEE 344-1974 section 6.4, which addresses devices that are intended to be mounted on a panel, and further states that, The device may be mounted directly to the shake table if the in-service excitation can be simulated. Your calculation WCG-ACQ-1301 did not demonstrate that the clamped mounting configuration is rigid nor did it establish that IEEE 344 section 6.4 is applicable to the clamped mounting configuration of your MCCBs. Your use of section 6.4, in this case is in contradiction to section 6.1 of the same standard, which states in part, The equipment to be tested shall be mounted on the vibration generator in a manner that simulates the intended service mounting. Therefore, we request an amended response to the violation describing corrective actions that are sufficient for you to achieve full compliance.
In accordance with 10 CFR 2.390 of the NRCs Rules of Practice, a copy of this letter and your response will be available electronically for public inspection in the NRC Public Document Room or from the Publicly Available Records (PARS) component of the NRCs document system (ADAMS). Adams is accessible from the NRC Web site at http://www.nrc.gov/reading-rm/adams.html (the Public Electronic Reading Room).
A. Bhatnagar 2
If you have any questions regarding this correspondence, please contact Mark Lesser at 404-997-4460.
Sincerely,
/RA/
Charles R. Ogle, Director Division of Construction Inspection Docket No. 50-391 License No. CPPR-92
ML102920665 O SUNSI REVIEW COMPLETE OFFICE RII:DCI RII:DCI RII:EICS OE NRR RII:DCI RII:DCP SIGNATURE MSL CRO CE GG via email KM via email TF RH NAME M. Lesser C. Ogle C. Evans G. Gulla K. Manoly T. Fanelli R. H DATE 2/25/11 3/4/11 3/4/11 2/28/11 3/3/11 2/15/11 2/28/11 E-MAIL COPY?
YES NO YES NO YES NO YES NO YES NO YES NO
A. Bhatnagar 3
cc:
Mr. Gordon P. Arent Manager New Generation Licensing Nuclear Generation Development and Construction WBN Nuclear Plant P.O. Box 2000 Spring City, Tennessee 37381 Ms. Maria Gilman Interim Vice President WBN Unit Two WBN Nuclear Plant Tennessee Valley Authority P.O. Box 2000 Spring City, Tennessee 37381 Mr. Michael K. Brandon, Manager Licensing and Industry Affairs WBN Nuclear Plant Tennessee Valley Authority P.O. Box 2000 Spring City, Tennessee 37381 Mr. Preston D. Swafford Chief Nuclear Officer and Executive Vice President Tennessee Valley Authority 3R Lookout Place 1101 Market Place Chattanooga, Tennessee 37402-2801 County Executive 375 Church Street Suite 215 Dayton, Tennessee 37321 W.R. Crouch, Manager WBN Unit 2 Licensing Watts Bar Nuclear Plant Tennessee Valley Authority P.O. Box 2000 Spring City, Tennessee 37381 Mr. Gregory A. Boerschig Plant Manager, WBN Nuclear Plant Tennessee Valley Authority P.O. Box 2000 Spring City, Tennessee 37381 Mr. M.J. Hellstern General Manager NGDC Governance & Oversight Tennessee Valley Authority 3A Blue Ridge Place 1101 Market Street Chattanooga, Tennessee 37402-2801 Mr. R.M Krich Vice President Nuclear Licensing Tennessee Valley Authority 3R Lookout Place 1101 Market Street Chattanooga, Tennessee 37402-2801 Mr. E.J. Vigluicci Assistant General Counsel Tennessee Valley Authority 6A West Tower 400 West Summit Hill Drive Knoxville, Tennessee 37402 Lawrence E. Nanney, Director Tennessee Department of Environmental Health and Conservation Division of Radiological Health 3rd Floor, L&C Annex 401 Church Street Nashville, TN 37243-1532 Mr. D. E. Grissette Site Vice President WBN Nuclear Plant Tennessee Valley Authority P.O. Box 2000 Spring City, Tennessee 37381 County Mayor P.O. Box 156 Decatur, Tennessee 37322 Senior Resident Inspector WBN Nuclear Plant U.S. NRC 1260 Nuclear Plant Road Spring City, Tennessee 37381-2000
A. Bhatnagar 4
cc email distribution:
Greg Scott Tennessee Valley Authority Electronic Mail Distribution Watts Bar 2 Licensing Tennessee Valley Authority Electronic Mail Distribution
Letter to Ashok S. Bhatnagar from Charles R. Ogle dated March 4, 2011
SUBJECT:
RESPONSE TO CORRECTIVE ACTIONS FOR NOTICE OF VIOLATION (NOV)05000391/2010603-08 Distribution w/encl:
L. Raghavan, NRR S. Campbell, NRR P. Milano, NRR C. Evans, RII L. Douglas, RII EICS R. Haag, RII, DCP T. Nazario, RII, WBN Unit 2 SRI E. Guthrie, RII DRP R. Monk, RII WBN Unit 1 SRI OE Mail (OEMAIL)
PUBLIC