ML18024B048
| ML18024B048 | |
| Person / Time | |
|---|---|
| Site: | Browns Ferry  |
| Issue date: | 10/09/1979 |
| From: | Mills L TENNESSEE VALLEY AUTHORITY |
| To: | Harold Denton Office of Nuclear Reactor Regulation |
| Shared Package | |
| ML18024B049 | List: |
| References | |
| NUDOCS 7910120143 | |
| Download: ML18024B048 (3) | |
Text
ACCESSION NBR FACIL: 50-259 50-296 A
AM ILLS'. M.
ECIP. NAME DENTONs H. R.
REGULATORY INFORMATION DISTRIBUTION SYSTE
( R IDS) 79101201 ~3
. DATE: 79/10/09 NOTARIZED-.
YES Browns Ferry Nuclear Power Stations Unit ii Tennessee rowns'erry Nuclear Power Stations Unit 2i Tennessee owns Ferry Nuclear Power Stations Unit 3i Tennessee AUTHOR AFFILIATION Tennessee Valley Authority RECIPIENT AFFILIATION Office of Nuclear Reactor Regulation DOCKET 05000259 05000260 05000296
SUBJECT:
Forwards "Evaluation of Environ Effects on Nonsafetg-Related Sgs Resulting from Postulated High Energy Pipe Failures Inside h Ouside Primary Containmenti" in response to 790917 ltr 8c IE Info Notice 79-22..
DISTRIBUTION CODE:
A038S COPIES RECEIVED: LTR ~ ENCL B SIZE:
/+ /+
TITLE: Resp 9/17/79 Denton Ltr-Interact Sf tg Qrd e Sg s 5 Non-Sg s NOTES:
RECIPIENT ID CODE/NAME ACTION:
5 BC g
INTERNAL:
EQ FU1 E 1,1 REAC SFTY hR 14 EEB 16 OELD' LPDR 6 T MARSH 8
W MORRIS EXTERNAL:
17 ACRS COPIES LTTR ENCL 4
4 1
1 1
1' 1
1, 1
1 1,
1'.
1 1
16 16 RECIPIENT ID CODE'/NAME 10 ENGR BR 12 I5E 15 EFLT TRT SYS 2
NRC, PDR 5 M'ROTENHUIS 7'
ROSENTHAL 9'ORE PERF BR PLA4< spy. Mt
4 NSIC COPIES LTTR ENCL 1
1 2
2 1
1 1
1.,
11.
1 1
1 t
1
-1 OCT l51978 TOTAL NUMBER OF COPIES REQUIRED:
LTTR 36 ENCL 36
400 Chestnut Street Tower II October 9, 1979 Mr. Harold R. Denton, Director Office of Nuclear Reactor Regulation U.S. Nuclear Regulatory Commission Washington, DC 20555
Dear Mr. Denton:
In response to IE Information Notice 79-22 and your September 17, 1979, letter to all operating light ~ater reactors regarding a potential unreviewed safety question on interaction between nonsafety grade systems and safety grade
- systems, we are enclosing the results of our evaluation for the Browns Ferry Nuclear Plant.
This evaluation was performed using guidance and clarification provided in a meeting with the NRC staff held in, Bethesda,. Maryland, on September 20, 1979.
The General Electric= Company (GE) has provided TVA with a generic evaluation of BWR's.
We have reviewed this evaluation and, although the methodology used by GE differs from that used by TVA, we have found that the final conclusions regarding system interaction and effects. on safety systems are the same.
Based on the conclusions. of the enclosed report continued operation of the Browns Ferry Nuclear Plant is justified and the operating licenses for Browns Ferry units 1, 2, and 3 should not be modified, suspended, or revoked.
Very truly yours, TENNESSEE VALLEY AUTHORITY Nuclear Regulation and Safety Subscribed and sworn to before me this 6 day of
('~ )/cd'79.
.E cc d~DC No ary Public My Commission Expires 8
'nclosure An Equal Opportunity Employer V9slo i2o I+5
ENCLOSURE