ML041110665
| ML041110665 | |
| Person / Time | |
|---|---|
| Site: | Browns Ferry  |
| Issue date: | 04/16/2004 |
| From: | Jabbour K NRC/NRR/DLPM/LPD2 |
| To: | Scalice J Tennessee Valley Authority |
| Jabbour K, 415-1496 | |
| References | |
| TAC MC1427 | |
| Download: ML041110665 (4) | |
Text
April 16, 2004 Mr. J. A. Scalice 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 THE SCRAM DISCHARGE VOLUME WATER LEVEL SETPOINT (TAC NO. MC1427)
Dear Mr. Scalice:
By letter dated November 3, 2003, the Tennessee Valley Authority submitted an application to revise the Technical Specifications (TSs) for the Browns Ferry Nuclear Plant, Unit 1. The proposed revision would lower the allowable value in TS Table 3.3.1.1.1-1, Reactor Protection System Instrumentation, Function 7.b, Scram discharge Volume Water Level - High Float Switches.
The U.S. Nuclear Regulatory Commission staff has reviewed your submittal and finds that a response to the enclosed request for additional information is needed before we can complete the review. This request was discussed with your staff on April 15, 2004, and it was agreed that a response would be provided within 30 days of receipt of this letter. If you have any questions, please contact me at (301) 415-1496.
Sincerely,
/RA by W. Burton for/
Kahtan N. Jabbour, Senior 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
ML041110665 OFFICE PDII-2/PM PDII-2/LA EEIB/SC SRXB/SC PDII-2/SC NAME KJabbour BClayton EMarinos FAkstulewicz MLMarshall for:
WBurton DATE 04/15/04 04/15/04 04/15/04 04/16/04 04/16/04
Mr. J. A. Scalice BROWNS FERRY NUCLEAR PLANT Tennessee Valley Authority cc:
Mr. Karl W. Singer, Senior Vice President Nuclear Operations Tennessee Valley Authority 6A Lookout Place 1101 Market Street Chattanooga, TN 37402-2801 Mr. James E. Maddox, Vice President Engineering & Technical Services Tennessee Valley Authority 6A Lookout Place 1101 Market Street Chattanooga, TN 37402-2801 Mr. Ashok S. Bhatnagar, Site Vice President Browns Ferry Nuclear Plant Tennessee Valley Authority P.O. Box 2000 Decatur, AL 35609 General Counsel Tennessee Valley Authority ET 11A 400 West Summit Hill Drive Knoxville, TN 37902 Mr. T. J. Niessen, Acting General Manager Nuclear Assurance Tennessee Valley Authority 6A Lookout Place 1101 Market Street Chattanooga, TN 37402-2801 Mr. Michael D. Skaggs, 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. Mark J. Burzynski, Manager Nuclear Licensing Tennessee Valley Authority 4X Blue Ridge 1101 Market Street Chattanooga, TN 37402-2801 Mr. Timothy E. Abney, 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 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
REQUEST FOR ADDITIONAL INFORMATION SCRAM DISCHARGE VOLUME WATER LEVEL SETPOINT TENNESSEE VALLEY AUTHORITY BROWNS FERRY NUCLEAR PLANT, UNIT 1 DOCKET NO. 50-259
- 1. Please discuss the instrument setpoint methodology used to calculate the allowable values of the float switches to monitor the scram discharge volume water level. Please identify the method discussed in the Instrument Society of America Standard 67.04.02, which has been used to determine the allowable values for this function. If your methodology has not been previously reviewed by the U.S. Nuclear Regulatory Commission staff, then please submit a copy of plant instrument setpoint methodology for review and approval.
- 2. Please provide simplified drawings showing the configuration of the scram discharge volume, the instrument volume, and the location of all level switches.
- 3. It appears that there is a slight discrepancy between the Updated Final Safety Analysis Report, Section 3.4.5.3, and the November 3, 2003, submittal regarding the number of switches. Please address this discrepancy.
- 4. Please discuss, in detail, the function and the allowable setpoint values of the resistance temperature devices that are provided for the scram discharge volume level monitoring.