ML18030B231
| ML18030B231 | |
| Person / Time | |
|---|---|
| Site: | Browns Ferry  |
| Issue date: | 03/31/1986 |
| From: | Clark R Office of Nuclear Reactor Regulation |
| To: | White S TENNESSEE VALLEY AUTHORITY |
| References | |
| NUDOCS 8604080456 | |
| Download: ML18030B231 (6) | |
Text
Docket Nos.:
50-259/260/296 Mr. S. A. White Manager of Nuclear Power Tennessee Valley Authority 6N 38A Lookout Place 1101 Market Street Chattanooga, Tennessee 37402-2801
Dear Mr. White:
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Gray File HThompson
SUBJECT:
ATWS RULE
REQUIREMENTS Re:
Browns Ferry Nuclear Plant, Units 1, 2 and 3
Your letter of October ll, 1985 on the above subject-presented your proposed design concept on the three ATWS mitigating systems required for Browns Ferry.
Our comments on the three systems are as follows:
Alternate Rod In 'ection (ARI)
The use of the backup scram valves is acceptable provided the design complies with all of the requirements in the table which is a part of the final rule (49 FR 26042) and provided the scram air header can be vented in less than one (1) minute.
Standb Li uid Con'trol S stem (SLC)
The use of both pumps to attain an injection rate of 86gpm is acceptable.
Use of a soluble poison with B-10 enriched solution at an equivalent control capacity to the 86gpm is also acceptable provided the injection rate complies with equation
- 1. 1 on page 1-5 of General Electric topical report NEDE-31096-P dated December 1985 to assure reasonable mixing with water in the reactor vessel.
Recirculation Pum Tri (RPT)
Your concept, using 2 out of 2 logic, is acceptable.
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II II The ATWS Rule requires that licensees submit schedules for meeting the requirements of 10 CFR 50.62 with justification if the schedule calls for final implementation later than the second refueling outage after July 26, 1984.
As noted in your letter of October ll, 1985, your proposed implementation schedule meets the requirement of 10 CFR 50.62(d) and is acceptable.
Sincerely, 0>igigs1 o ignore bg Richard J. Clark, Project Manager BWR Project Directorate 82 Division of BWR Licensing CC:
See next page OFFICIAL RECORD COPY
- Please see previous concurrence page DBL:PDII~2 SNo&Vs nc*
3/24/86 A1 DBL:RSB MHodges*
3/10/86 DBL:PD82 RClark*
3/24/86 PWR-A:AD ERossi*
3/10/86 DBL:PDk'2 PEICSB:CPLB MGrotenhuis*
RKendall*
3/25/86 3/11/86 DDL:PDP2:D DMulle r 3/q(/86
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Mr. S.
A. I!hite Tennessee Valley Authority Browns Ferry Nuclear Plant Units 1, 2, and 3
CC:
H. S. Sanqer, Jr., Esouire General Counsel Tennessee
'(/alley Authority 400 Commerce Avenue E 11B 330 Knoxville, Tennessee 37902 Mr.
Ron Rogers Tennessee Valley Authority 5N 130B Lookout Place Chattanooga, Tennessee 3740'2-280'l
- Chairman, Limestone County Commission Post Office Box 188
- Athens, Alabama 35611 Ira L. Meyers, M.D.
State Health Officer State Department of Public !!ealth State Office Building Montgomery, Alabama 36130 Mr. K. I!. llhitt E3A8 400 liest Summit Hill Drive Tennessee Valley Authority Knoxville, Tennessee 37902 l'I. C, Bibb Site Director, BFNP Tennessee Valley Authority Post Office Box 2000
- Decatur, Alabama 35602 Resident Inspector U. S. Nuclear Regulatory Commission Route 2, Box 311
- Athens, Alabama 35611 Mr. Donald L. I!illiams, Jr.
Tennessee Valley Authority 400 l!est Summit Hill Drive, H10B85 Knoxville, Tennessee 37902 Robert L. Lewis, Manager, BFNP Tennessee Valley Authority Post Office Box 2000
- Decatur, Alabama 35602 Regional Administrator, Region II U. S. Nuclear Regulatory Commission 101 Marietta Street, Suite 3100 Atlanta, Georgia 30303 Mr. Steven Roessler U.
S. Nuclear Regulatory Commission Reactor Training Center Osborne Office Center, Suite 200 Chattanooga, Tennessee 37411
0 i7 II