ML19354C342
| ML19354C342 | |
| Person / Time | |
|---|---|
| Site: | Browns Ferry  |
| Issue date: | 08/08/1980 |
| From: | Ippolito T Office of Nuclear Reactor Regulation |
| To: | Parris H TENNESSEE VALLEY AUTHORITY |
| Shared Package | |
| ML19331C921 | List: |
| References | |
| TAC-12892, NUDOCS 8008200071 | |
| Download: ML19354C342 (3) | |
Text
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]h UNITED STATES
'8 NUCLEAR REGULATORY COMMISSION g
y WASHINGTON, D. C. 20555 t
/e AUGusy 8 1980 Docket Nos. 50-259 50-260 and 50-296 Mr. Hugh G. Parris Manager of Power Tennessee Valley Authority 500A Chestnut Street,-Tower II Chattanooga, Tennessee 37401
Dear Mr. Parris:
By letter dated February 23, 1980, you were requested to provide informa-tion regarding primary coolant system pressure isolation valves. The objective of this 10_CFR 50.54(f) letter was to identify those plants which have either or both of the valve configurations found in WASH-1400 (Event V) to be significant risk contributors to an intersystem LOCA which results in a core melt accident.
We have confirmed that the two specific Event V valve configurations do not exist at your facility. This is based upon the evaluation of your l
response to our February letter as well as the review of previously docketed information (Enclosure). Based on this, our activities regarding these valve configurations have been finalized for your facility.
I In addition to these Event V valve configurations, we are continuing our efforts to review other configurations located at high pressure /
low pressure system boundaries for their potential risk contribution to an intersystem LOCA which may result in a core melt accident.
Therefore, further activity regarding the broader topic of intersystem LOCA's may be expected in the future.
Your time and effort in closing out the Event V portion of the inter-system LOCA concern are appreciated.
Sincerely,
- 5. 4 Ippolito, Chief Thoma Operating Reactors Branch #2 Division of Licensing Enclosure and ccs:
See next page 800820007[
f
a Mr. Hugh G. Parris
Enclosure:
Franklin Research Center Technical Evaluation Report, " Primary Coolant System Pressure Isolation Yalves,"
dated July 21, 1980.
cc w/o enclosure:
See next page 1
i Mr. Hugh G. Parris cc:
H. S. Sanger, Jr., Esquire General Counsel Tennessee Valley Authority 400 Commerce Avenue E 11B 33 C Knoxville, Tennessee 37902 Mr. Ron Rogers Tennessee Valley Authority 400 Chestnut Street, Tower II Chattanooga, Tennessee 37401 Mr. H. N. Culver 249A HBD 400 Commerce Avenue Tennessee Valley Authority Knoxville, Tennessee 37902 Robert F. Sullivan U. S. Nuclear Regulatory Commission P. O. Box 1863 Decatur, Alabama 35602 Athens Public Library South and Forrest Athens, Alabama 35611
..