ML17053B938
| ML17053B938 | |
| Person / Time | |
|---|---|
| Site: | Nine Mile Point  |
| Issue date: | 08/08/1980 |
| From: | Ippolito T Office of Nuclear Reactor Regulation |
| To: | Dise D NIAGARA MOHAWK POWER CORP. |
| Shared Package | |
| ML17053B939 | List: |
| References | |
| NUDOCS 8009170389 | |
| Download: ML17053B938 (6) | |
Text
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t980 NRC PDR NRR Reading DEisenhut RPurple TNovak RTedesco GLainas JKeltemes, AEOD Docket No. 50-220 tIr. Donald P-Dise Vice President - Engineering c/o 51iss Catherine R. Seibert Niagara tfohawk Power Corporation 300 Erie Boulevard West
Dear fir. Disc:
By letter dated February 23, 1980, you were requested to provide infornia-
'ion regarding primary coolant system pressure isolation valves.
The objective of this 10 CFR 50.54(f) letter was to identify thohe 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.
1 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 response to our February letter as well as the revisit of previously docketed information (Enclosure).
Based on this, our activities regarding these valve configurations have been finalized for your faci 1 ity.
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.'herefore, 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.
Sine rely, ri8in8l Signed Qy eI
>QpohtO
- Enclosure and ccs':
See next page Thomas A. Ippolito, Chief Operating Reactors Branch ¹2 Division of Licensing OFFICE) i.,
SURNAME DATE
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/80 i~NRC FORM 318 (9-76) NRCM 0240 40.S. GOVERNMENT PRINTING OFFICE: 1979-289 369
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Mr. Donald P. Disc
Enclosure:
Franklin Research Center Technical'valuation
- Report, "Primary..Coolant System Pr essur e Isolation Valves,"
dated July 21, 1980.
cc w/o enclosure:
Eugene B. Thomas, Jr.,
Esquire
- LeBoeuf, Lamb, Leiby 8 MacRae 1333 New Hampshire Avenue, N.
W.
Suite 1100 Washi.ngotn, D. C.
20036 State University College at Oswego Penfield Library - Documents
- Oswego, New York 13126
Mr. Donald P.
Disc
- 3 CC:
Eugene B. Thomas, Jr., Esquire
- LeBoeuf, Lamb, Leiby 5 MacRae 1333 New Hampshire
- Avenue, N.
W.
Suite 1100 Washington, D.
C.
20036 State University College at Oswego Penfield Library - Documents
- Oswego, New York 13126 Mr. Joseph J.
- Sunser, Manager System Security Niagara Mohawk Power Corporation 300 Erie Boulevard West
- Syracuse, New York 13202 (Security matters only)