ML052280392
| ML052280392 | |
| Person / Time | |
|---|---|
| Site: | Browns Ferry  |
| Issue date: | 09/02/2005 |
| From: | Chernoff M NRC/NRR/DLPM/LPD2 |
| To: | Singer K Tennessee Valley Authority |
| CHERNOff, M H, NRR/DLPM, 301-415-4018 | |
| References | |
| TAC MC4161 | |
| Download: ML052280392 (5) | |
Text
September 2, 2005 Mr. Karl E. Singer Chief Nuclear Officer and Executive Vice President Tennessee Valley Authority 6A Lookout Place 1101 Market Street Chattanooga, TN 37402-2801
SUBJECT:
BROWNS FERRY NUCLEAR PLANT, UNIT 1 - REQUEST FOR ADDITIONAL INFORMATION REGARDING 24 MONTH FUEL CYCLE (TAC NO. MC4161)
(TS-433)
Dear Mr. Singer:
By letter dated August 16, 2004, Tennessee Valley Authority submitted a request for a Technical Specification change to extend the frequency of once-per-cycle from 18 months to 24 months in the affected Technical Specification Surveillance Requirements.
Based on our review of your submittal, the U. S. Nuclear Regulatory Commission staff finds that a response to the enclosed request for additional information is needed before we can complete the review. The NRC staff requests a response within 30 days from the date of issuance of this letter.
If you have any questions, please contact me at (301) 415-4041.
Sincerely,
/RA/
Margaret H. Chernoff, Project Manager, Section 2 Project Directorate II Division of Licensing Project Management Office of Nuclear Reactor Regulation Docket No. 50-259
Enclosure:
Request for Additional Information cc w/encl: See next page
ML052280392 NRR-088 OFFICE PDII-2/PM PDII-2/PM PDII-2/LA EEIBB/SC PDII-2/SC NAME EBrown MChernoff BClayton EMarinos by memo MMarshall DATE 09/ 01 /05 09/ 01 /05 08/ 30 /05 01/ 10 /05 09/ 02 /05
Enclosure REQUEST FOR ADDITIONAL INFORMATION 24-MONTH FUEL CYCLE TENNESSEE VALLEY AUTHORITY BROWNS FERRY NUCLEAR PLANT, UNIT 1 DOCKET NO. 50-259 1.
On August 16, 2004, General Electric Nuclear Energy Company issued a Part 21 Notification MFN 04-080, Part 21 60-day Interim Notification: Narrow Range Water Level Instrument Level-3 Trip. This notification concerns a potential issue with the Level-3 trip from the narrow range water level instruments that initiate reactor scram.
Does this condition apply to Browns Ferry Nuclear Plant (BFN), Unit 1? Please explain the basis for the determination of applicability. Specifically:
C Show that the dryer skirt will remain submerged with no steam bypass during all anticipated transients for which the reactor vessel water level instrument system (RVWLIS) is needed.
C Show that the error in the water level measurement will remain within the limits assured in the selection of the normal setpoints during all anticipated transients for which the RVWLIS is needed.
2.
In Enclosure 1 of Tennessee Valley Authoritys (TVAs) submittal, on page E1-14, TVA response to Generic Letter 91-04, Item 1, states that A review of BFN data indicated that two occasions... the as-found surveillance value was outside of AVs [allowable values]. An evaluation concluded that the 24-month calibration frequency for these instruments was still acceptable. Please provide the criteria for your evaluation and the basis for the conclusion that the 24-month calibration frequency was still acceptable.
3.
In Enclosure 1, on page E1-58, Section 4.2, Validation Items from Conversion to Improved Technical Specification Item A Calibration Frequencies lists some of the instruments that need to be validated to satisfy License Condition 2.C(4). The U.S. Nuclear Regulatory Commission staff compared the information in Section 4.2 of this submittal and the information in your letters dated June 16, 2004, Browns Ferry Unit 1 - Plan for Satisfying License Condition 2.C(4), and October 12, 2004, Browns Ferry Unit 1 - Completion of License Condition 2.C(4), and found that some clarification is needed. For example, on page E1-59, Section A.1 of the TS-433 submittal discusses only the Reactor Vessel Steam Dome Pressure. However, page E1-4 of the June 16 letter and page E1-3 of the October 12 letter discuss the High Reactor Pressure, High Drywell Pressure and Reactor Low Water Level, and state that the validation of the calibration frequency for two of these functions is no longer required. Please explain this statement. Also, please verify that instruments described in Section 4.2 of this submittal represent all the instruments that need to be validated under License Condition 2.C(4) with respect to 24-month calibration frequency.
4.
On page E1-16 of Enclosure 1, the application states that drift studies were performed for a 30-month cycle for each instrument type. Please provide a sample drift study.
Mr. Karl W. Singer BROWNS FERRY NUCLEAR PLANT Tennessee Valley Authority cc:
Mr. Ashok S. Bhatnagar, Senior Vice President Nuclear Operations Tennessee Valley Authority 6A Lookout Place 1101 Market Street Chattanooga, TN 37402-2801 Mr. Larry S. Bryant, General Manager Nuclear Engineering Tennessee Valley Authority 6A Lookout Place 1101 Market Street Chattanooga, TN 37402-2801 Brian OGrady, Site Vice President Browns Ferry Nuclear Plant Tennessee Valley Authority P.O. Box 2000 Decatur, AL 35609 Mr. Robert J. Beecken, Vice President Nuclear Support Tennessee Valley Authority 6A Lookout Place 1101 Market Street Chattanooga, TN 37402-2801 General Counsel Tennessee Valley Authority ET 11A 400 West Summit Hill Drive Knoxville, TN 37902 Mr. John C. Fornicola, Manager Nuclear Assurance and Licensing Tennessee Valley Authority 6A Lookout Place 1101 Market Street Chattanooga, TN 37402-2801 Mr. Bruce Aukland, Plant Manager Browns Ferry Nuclear Plant Tennessee Valley Authority P.O. Box 2000 Decatur, AL 35609 Mr. Jon R. Rupert, Vice President Browns Ferry Unit 1 Restart Browns Ferry Nuclear Plant Tennessee Valley Authority P.O. Box 2000 Decatur, AL 35609 Mr. Robert G. Jones Browns Ferry Unit 1 Plant Restart Manager Browns Ferry Nuclear Plant Tennessee Valley Authority P.O. Box 2000 Decatur, AL 35609 Mr. Scott M. Shaeffer Browns Ferry Unit 1 Project Engineer Division of Reactor Projects, Branch 6 U.S. Nuclear Regulatory Commission 61 Forsyth Street, SW.
Suite 23T85 Atlanta, GA 30303-8931 Mr. Glenn W. Morris, Manager Corporate Nuclear Licensing and Industry Affairs Tennessee Valley Authority 4X Blue Ridge 1101 Market Street Chattanooga, TN 37402-2801 Mr. William D. Crouch, Manager Licensing and Industry Affairs Browns Ferry Nuclear Plant Tennessee Valley Authority P.O. Box 2000 Decatur, AL 35609 Senior Resident Inspector U.S. Nuclear Regulatory Commission Browns Ferry Nuclear Plant 10833 Shaw Road Athens, AL 35611-6970 State Health Officer Alabama Dept. of Public Health RSA Tower - Administration Suite 1552 P.O. Box 303017 Montgomery, AL 36130-3017 Chairman Limestone County Commission 310 West Washington Street Athens, AL 35611