ML19270F804
| ML19270F804 | |
| Person / Time | |
|---|---|
| Site: | Maine Yankee |
| Issue date: | 03/15/1979 |
| From: | Groce R Maine Yankee |
| To: | Reid R Office of Nuclear Reactor Regulation |
| Shared Package | |
| ML19270F805 | List: |
| References | |
| WMY-79-18, NUDOCS 7903270541 | |
| Download: ML19270F804 (1) | |
Text
-
.w.
m==m MAIRE"Y iAHARHEE VmmrFa%iCCn:~W
- TURNPIKE ROAD (RT. 9) s\\
$ [1/
ENGINEERING OFFICE WEST 8ORO MASSACHUSETTS 01581 617-366-9011
'"h g gg B.3.2.1 KEY 79-18 March 15, 1979 United States Nuclear Regulatory Commission Washington, D. C.
20555 Attention: Office of Nuclear Reactor Regulation Robert W. Reid, Chief Operating Reactors Branch #4 Division of Operating Reactors
References:
(a) License No. DPR-36 (Docket No. 50-309)
(b) MYAPC letter to USNRC dated August 3, 1978, Application of Yankee-WREM-Based Generic PWR ECCS Evaluation Model to Maine Yankee (3-loop sample problem)
(c) USNRC letter to MYAPC dated January 17, 1979, Topical Report Evaluation
Dear Sir:
Subject:
Cont ainment Pressure Model for Maine Yankee ECCS Performance Evaluation In your letter, Reference (c), you determined that the present version of our ECCS evaluation model consisting of RELAP 4 EM, RELAP 4-FLOOD and TOODEE 2 was acceptable for analyses of loss of coolant accidents at Maine Yankee and acceptable on a generic basis for YAEC PWR reload licensing applications. The containment pressure response used in the sample cal-culation presented in our evaluation model (Reference b) was based on a Combustion Engineering analysis performed for Maine Yankee Cycle 3 loading.
As stated in our submittal and in your evaluation, future licensing calculations to be submitted for the Maine Yankee reload and subsequent licensing submittals will be performed using the CONTEMPT-LT Version 26 code.
Through discussions with members of your staff, it is apparent that you can provide a more accurate assessment of these future calculations with the assistance of this model. Accordingly, we have enclosed for your information and use, a copy of the Containment Pressure Model for Maine Yankee ECCS Performance Evaluation which is based on the CONTEMPT-LT Version 26 Code.
We trust this information will be of service to you.
However, should you have any questions, please contact us.
(
Very truly yours, I
7903o7059
.ANE YANKEE ATOMIC POWER COMPANY ty
~
- 8/Ar--
\\
~ Robert H. Groce Licensing Engineer RTT/em Enclosure