ML19323F415
| ML19323F415 | |
| Person / Time | |
|---|---|
| Issue date: | 03/11/1980 |
| From: | Plesset M Advisory Committee on Reactor Safeguards |
| To: | Dircks W NRC OFFICE OF THE EXECUTIVE DIRECTOR FOR OPERATIONS (EDO) |
| Shared Package | |
| ML19323F414 | List: |
| References | |
| NUDOCS 8005290003 | |
| Download: ML19323F415 (1) | |
Text
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NUCLEAR REGUL/. TORY COMMISSION c
ADVISORY COMMITTEE ':N REACTOR SAFEGUARDS (d S WA$HINo7t:N. D. C. 20555 March 11, 1980 Mr. William J. Dircks, Acting Executive Director for Operations U. S. Nuclear Regulatory Commission Washington, D. C. 20555
Dear Mr. Dircks:
Several Nr0L plant test programs are currently under consideration with regard to low power tests which are designed to provide operatioral training and to obtain information regarding plant performance during energency conditions.
Some of the conditions which could usefully be included are verification of core cooling capability when natural circulation has been impeded or upset by one or more factors, including gas binding.
This would make necessary the use of the " feed-bleed" or " reflux-condensation" processes.
?.ese processes have not been proven, and safety grade equipnent is not in place to provide the " bleed" part of the process.
It would be prudent to investigate these processes under controlled condi-tions if we intend to depend on them during energency conditions.
To this end, the ACRS recommends that consideration should be given, if 'at all possible, to some verification testing of decay heat removal under upset
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conditions during low power testing programs.
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Sincerely, Milton S. Plesset Chairman O
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