ML19345B678
| ML19345B678 | |
| Person / Time | |
|---|---|
| Site: | Millstone  |
| Issue date: | 11/14/1980 |
| From: | Counsil W NORTHEAST NUCLEAR ENERGY CO. |
| To: | Clark R Office of Nuclear Reactor Regulation |
| References | |
| TASK-2.K.3.30, TASK-TM A01216, A1216, TAC-45840, NUDOCS 8012020336 | |
| Download: ML19345B678 (2) | |
Text
_
f-lWHrrHI!AST trrII.friliS u
navu
<- m po gog 270
}
m,.;
ino, i i n.
HARTFORD. CONNECTICUT 06101 y,,
.; q.7. -
~
k L
J"".",,....'
m llt 10 E?
o h
[
November 14, 1980 TU.i Q
crifi k
$.1
-[
Docket No. 50-336
[
':f
~,
A01216 j
~
1 fn
.~
c3 8
[
Directo82cf Nuclear Reactor Regulation Attn:
Mr. Robert a.
Clark, Chief Operating Reactors Branch #3 U. S. Nuclear Regulatory Commission Washington, D.C.
20555
References:
(1)
D. G. Eisenhut letter to All Licensees of Operating Plants and Applicants for Operating Licenses and Holders of Construction Permits dated October 31, 1980 forwarding NUREG-0737.
(2)
T. M. Anderson letter to D. G. Eisenhut dated September 26, 1980.
Gentlemen:
Millstone Nuclear Power Station, Unit No. 2 Revised Small Break LOCA Model The TM1 Action Plan, as updated by Reference (1), required licensees to outline the scope and schedule for developing revised small break Loss of Coolant Accident (LOCA) models to demonstrate compliance with 10CFR50, Appendix K.
The implementa-tion schedule forwarded via Reference (1) requires the Nuclear Steam Supply System (NSSS) vendors and/or fuel suppliers to submit justification for present models or revised analysis models for Staff review by January 1, 1982.
Plant-specific analyses utilizing the revised models are to be completed by January 1, 1983.
Northeast Nuclear Energy Company (NNECO), on behalf of Millstone Unit No. 2, has contacted both the NSSS vendor and the fuel supplier concerning the small break LOCA model upgrade. As a result-af u s e discussions, NNECO has concluded tlut this item would be more appropriately handled through the current fuel supplier, who provided the Staff with an outline of the program for model revision via Reference (2).
It is noted for clarification that the current fuel supplier is not the NSSS vendor for Millstone Unit No. 2.
80120203Ob
'jo Westinghouse Electric Corporation, the current fuel supplier, anticipates the special effects simulation changes addressing the TML concerns to be completed by January 1, 1982. Specific application to Millstone Unit No. 2, which addresses NUREG-0635, is not anticipated to be completed until April,1982.
Further information regarding the scope and schedule of these revisions can be found in Reference (2).
We trust you will find this information responsive to your request.
Very truly yours, NORTHEAST NUCLEAR ENERGY COMPANY f.
ll k?l,!'NO'l W. G.
insil Senior vice President