ML032830023
| ML032830023 | |
| Person / Time | |
|---|---|
| Site: | Browns Ferry  |
| Issue date: | 10/10/2003 |
| From: | Jabbour K NRC/NRR/DLPM/LPD2 |
| To: | |
| Jabbour K, NRR/DLPM, 415-1496 | |
| Shared Package | |
| ML032870348 | List: |
| References | |
| TAC MB8423, TAC MB8424, TAC MB8425 | |
| Download: ML032830023 (5) | |
Text
October 10, 2003 LICENSEE:
Tennessee Valley Authority FACILITY:
Browns Ferry Nuclear Plant, Units 1, 2, and 3
SUBJECT:
SUMMARY
OF OCTOBER 2, 2003, MEETING REGARDING THE EMERGENCY CORE COOLING SUBSYSTEMS FOR BROWNS FERRY PLANT, UNITS 1, 2, AND 3 (TAC NOS. MB8423, MB8424 AND MB8425)
Background
On October 2, 2003, the U.S. Nuclear Regulatory Commission (NRC) staff met with Tennessee Valley Authoritys (TVAs or the licensees) representatives at the NRC Headquarters in Rockville, Maryland. The objective of the meeting was to discuss TVAs license amendment request dated April 11, 2003 (ADAMS Accession No. ML031050093). The request was to revise the number of emergency core cooling (ECC) subsystems required in response to a loss-of-coolant accident (LOCA). The meeting was classified as a Category 1 meeting. However, no members of the public were in attendance. Attachment 1 is a list of attendees, and, which contains TVAs agenda for the meeting, is a copy of TVAs handout distributed at the beginning of the meeting.
Discussion Browns Ferry Nuclear Plants (BFNs) current ECC system logic is adequate to support operation of Units 2 and 3. However, the planned restart of BFN Unit 1 will require modifications to eliminate the potential for overloading the Units 1 and 2 shutdown board or diesel generators. The modifications will reduce the number of ECC subsystems that are actually available in response to certain design basis LOCAs coupled with loss-of-offsite power scenarios and a spurious accident signal from the non-LOCA unit. The licensee has concluded that the most limiting single failure is the loss of a battery. The reduction will result in a change to the Updated Safety Analysis Report for the recirculation line suction and discharge breaks for a spurious accident signal.
TVA representatives stated that in 1996 they implemented the General Electric Companys SAFER/GESTR-LOCA methodology, which resulted in more realistic peak-cladding temperatures and less equipment needed than what is actually available. In addition, they stated that the proposed revision of ECC subsystems that are available for various LOCA scenarios conforms to Title 10, Code of Federal Regulations, Section 50.46, and Appendix K.
In conclusion, TVA representatives summarized their analysis, discussed the Technical Specification changes that are needed, and stated that the modified logic will ensure that ECC system requirements are met with or without loss-of-offsite power.
Conclusion The NRC staff did not make any regulatory decisions during the meeting, and will review TVAs submittal in a timely manner.
Please direct any inquiries regarding this meeting to me at 301-415-1496 or KNJ@NRC.GOV.
Sincerely,
/RA/
Kahtan N. Jabbour, Senior Project Manager, Section 2 Project Directorate II Division of Licensing Project Management Office of Nuclear Reactor Regulation Docket Nos. 50-259, 50-260, and 50-296 Attachments: As stated cc w/atts: See next page
ML032830023 OFFICE PDII-2/PM PDII-2/LA SRXB/SC PDII-2/SC NAME KJabbour BClayton FAkstulewicz AHowe DATE 10/7/03 10/7/03 10 /7/03 10/8/03
ATTENDANCE LIST NUCLEAR REGULATORY COMMISSION STAFF MEETING WITH TENNESSEE VALLEY AUTHORITY AT NRC HEADQUARTERS EMERGENCY CORE COOLING SUBSYSTEMS OCTOBER 2, 2003 NRC TVA A. Howe R. Jones F. Akstulewicz T. Abney Z. Abdullahi J. Valente G. Thomas D. Burrell H. Garg W. Crouch S. Dinsmore H. Jones C. Sydnor T. Hayes K. Jabbour S. Kane
Tennessee Valley Authority BROWNS FERRY NUCLEAR PLANT cc:
Mr. J. A. Scalice Chief Nuclear Officer and Executive Vice President Tennessee Valley Authority 6A Lookout Place 1101 Market Street Chattanooga, Tennessee 37402-2801 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. Robert J. Adney, 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. 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