LD-83-074, Forwards Computer Simulation of Natural Circulation Cooldown
| ML20077J683 | |
| Person / Time | |
|---|---|
| Site: | 05000470 |
| Issue date: | 08/12/1983 |
| From: | Scherer A ABB COMBUSTION ENGINEERING NUCLEAR FUEL (FORMERLY |
| To: | Eisenhut D Office of Nuclear Reactor Regulation |
| Shared Package | |
| ML20077J684 | List: |
| References | |
| LD-83-074, LD-83-74, NUDOCS 8308180117 | |
| Download: ML20077J683 (1) | |
Text
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C-E P;wer Systems Tel. 203/688-1911 Combustion Engineenng. Inc.
Telex 99297 1000 Prospect mil Road Windsor. Connecticut 06035 M POWER SYSTEMS Docket No.:
STN 50-470F August 12,1 d3 LD-83-074 Mr. Darrell G. Eisenhut, Director Division of Licensing U.S. Nuclear Regulatory Commission Washington, D.C.
20555
Subject:
Natural Circulation Cooldown Re-Analysis for CESSAR-F
Reference:
Letter LD-83-051, A. E. Scherer to D. G. Eisenhut, dated June 7, 1983
Dear Mr. Eisenhut:
The enclosed report demonstrates the capability of the System 80" NSSS to achieve cold shutdown with a Reactor Vessel Upper Head (RVUH) steam void using only safety grade systems. As noted in the reference, the analysis assumes that the reactor coolant head vent system is available to help reduce the void in the RVUH. Based on our discussions with the Staff, we believe that this submittal should close out Confirmatory Item 9 of the CESSAR-F SER. We also recognize that demonstration of a natural circulation cooldown on the prototype System 80 plant will be addressed during startup testing at the Palo Verde Nuclear Generator Station 1.
If you have any questions on the enclosed report, please feel free to contact me or Mr. G. A. Davis of my staff at (203) 285-5207.
Very truly yours, COMBUSTION ENG NEE NG, INC.
A'2" A. E.
herer Director Nuclear Licensing AES:las Enclosure cc: Gary Meyer (Project Manager / USNRC) w/att.
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