ML20003E184
| ML20003E184 | |
| Person / Time | |
|---|---|
| Site: | Yankee Rowe, Maine Yankee |
| Issue date: | 03/27/1981 |
| From: | Ray J YANKEE ATOMIC ELECTRIC CO. |
| To: | Check P Office of Nuclear Reactor Regulation |
| References | |
| RTR-NUREG-0737, RTR-NUREG-737, TASK-2.K.3.30, TASK-TM FYR-81-47, NUDOCS 8104020451 | |
| Download: ML20003E184 (1) | |
Text
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YANKEE ATOMIC ELECTRIC COMPANY
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Re 2.C.2.1 YYN 01'Al 1671 Worcester Road, Frommgham, Masnchusetts 01701
,Yauxeef March 27,1y81
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United Sta tes Nuclear Regula tory Commiss ion Was n in gton, D. C.
20555 At ten tion:
Mr. Paul S. Ch e ck Ass i s tan t Director for Plant Sys tems Divis ion of Sys tems In tegra t ion Re fer en ces :
a)
Lien ese No. DPR-3 (Docket No. 50-29) b)
License No. DPR-36 (Docket No.50-309) c)
Le t te r, P.
S. Check of NRC to W.
P. Johnson of YAEC; da ted February f., 1981 Sub je ct :
Subcd ttal of Pos t-tes t Analyses for LOFT L3-1 an d S-07-10D Tes ts
Dear Sir:
We have carefully evalua ted your reques t of providing pos t-tes t prediction results for LOFT L3-1 and S-07-10D tes ts [ Re fer en ce (c)l.
Th is letter presen ts our res pense to your reques t.
As we poin ted out to Dr. Sheron of your sti ff, Yankee Ato=ic Electric Company did not pa r ti ci pa te in the pre-tes t prediction of LOFT L3-1 or S-07-10D tests.
Any analysis for these tes ts will require us to start th e work from a very initial stage.
Nodalization work will have to be completed.
The s teady s ta te calcula tions represen ting the tes t opera ting conditions will h.ve to be perforred.
In our opinion, th is is a major task and we cant.ot complete it by April 1,1981.
As you know, Yank ee is partici pa ting in LOFT L3-6 pos t-tes t predictions as required by NRC.
We have exercised our currently licensed code (RELAP 4/ MOD 3 based) as well as RELAP 5/ MOD 1 for the LOFT L3-6 prediction.
Th is prediction will aid our dec i s ion in choosing either RELAP 4 or RELAP 5 to perform future plan t specific Small Break Analyses.
The selected code will be modi fieJ as required, to account for post-TMI concerns and to meet Appendix K cr ite r ia.
We plan to review LOFT L3-1, LOFT L3-5 and S-07-10D tes ts in order to select a suitable candida te for the verification of our Small Break LOCA ce th odol o gy.
The tes t selected will be analyzed and the predictions will be s en t to you before January 1, 1982.
Th is schedule is in agreement with the requiremen ts set for th in II. K. 3. 30 o f NUREC-073 7.
If you have any ques tions or de.= - c a 4 di t ion al in forma t ion, please con ta ct us.
Very truly yours, YAfMEE ATOMIC E1ECTRIC COMPANY
/
J.
A.
Kav 8104020451-Senior Engineer - f.i c en s in g
.an,