ML19323B438
| ML19323B438 | |
| Person / Time | |
|---|---|
| Site: | Millstone  |
| Issue date: | 05/02/1980 |
| From: | Counsil W, Switzer D NORTHEAST NUCLEAR ENERGY CO. |
| To: | Crutcheield D Office of Nuclear Reactor Regulation |
| References | |
| TASK-15-19, TASK-RR NUDOCS 8005120371 | |
| Download: ML19323B438 (2) | |
Text
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NORTHEAST IFFII.FFIES w -.<v a tunmww a w w P O BOX 270
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May 2,1980 Docket No. 50-245_
Director of Nuclear Reactor Regulation Attn:
Mr. Dennis M. Crutchfield, Chief Operating Reactors Branch #5 U. S. Nuclear Regulatory Conmission Washington, D. C.
20555
References:
(1) Letter, W. G. Counsil to D. M. Crutchfield, dated April 29, 1980.
(2) Letter, W. G. Counsil to D. L. Ziemann, dated April 16, 1980.
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Letter, W. G. Counsil to D. L. Ziemann, dated March 19, 1980.
Gentlemen:
Millstone Nuclear Power Station, Unit No.1 Isolation Condenser As requested by members of your Staff, and reported in Reference (1), confirmatory studies were conducted for Northeast Nuclear Energy Company (NNECO) by General Electric Company in support of our application for Technical Specification change (References 2 and 3). The purpose of this analysis was to demonstrate that the small break analysis submittal contained in Reference (3) conservatively bounded the case where no LPCI flow is assumed to enter the reactor vessel for reflooding.
The attached Table 1 shows the results of this ECCS scenario and compares them to the limiting case which forms the basis for our requested Technical Specifications.
As Table 1 indicaces, the reference case with partial LPCI flow is more limiting than the case with no LPCI flow.
Based on the above and the detailed responses provided in Reference (2), it is our understanding that all considerations have been fully addressed.
Therefore, your approval is requested at the earliest possible data.
Very truly yours, NORTHEAST NUCLEAR ENERGY COMPANY LL b
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W. G. Counsil Vice President
?m By:
D. C. Switzer
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President
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_TMIJ: 1
_MDirtatE EMAIL DISCHAMCE FIM WI111 GAS TURBINE FAIIRME LIMITING BREAK 2
EIZE (FT )
FAIIRRE SYSITMS REMAINING LPCI FIDef
' PCT O.10 Gas Tuzidne II2CS+3AD5+IC no 2145 0.10 Gas Turhine II7C5+fz21JCI+3 ADS +IC Yes 2200
- CEASTE PCT based on SDRB265-6G2.0-80M Puel at 10GMD/T with MAPIJIGR=9.76 EN/FT
- fx21 SCI represents partial 17CI flow into the vessel I
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