ML19331E083
| ML19331E083 | |
| Person / Time | |
|---|---|
| Site: | Pilgrim |
| Issue date: | 08/08/1980 |
| From: | Ippolito T Office of Nuclear Reactor Regulation |
| To: | Andognini G BOSTON EDISON CO. |
| Shared Package | |
| ML19331E084 | List: |
| References | |
| NUDOCS 8009050450 | |
| Download: ML19331E083 (3) | |
Text
'
TERb UNITED STATES NUCLEAR REGULATORY COMMISSION 3
a O
E WASHmGTON. D. C. 20586
% s,,, $
' AUGUST 8 m Docket No. 50-293 Mr. G. Carl Andognini Soston Edison Company M/C NUCLEAR 800 Boylston Street Boston, Massachusetts 02199
Dear Mr. Andognini:
By' letter dated February 23,19CO, 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 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.
s 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, i
Thomas n Ippolito, Chief Operating Reactors Branch #2 Division of Licensing Enclosure and ces:
See next page l
1 l
8uvo050150 g
Mr. G. Carl Andognini 2-
Enclosure:
- l Fratiklin Research Center Technical
,)
Evaluation Report, " Primary Coolant System Pressure Isolation Valves,"
j dated July 21, 1980.
cc w/o enclosure:
See next page 4
9 f
i 1
i i
i i
i I
l
Mr. G. Carl Andognini Boston Edison Company cc:
s Mr. Paul J. McGuire Pilgrim Station Acting Manager Boston Edison Company RFD #1, Rocky Hill Road Plymouth, Massachusetts 02360 Henry Herrmann, Esquire Massachusetts Wildlife-Federation 151 Tremont Street 1
Boston, Massachusetts 02111 Plymouth Public Library North Street Plymouth, Massachusetts 02360 Resident Inspector c/o U. S. NRC
+
P. O. Box 867 Plymouth, Massachusetts 02360 i
l
,-