ML25175A073
| ML25175A073 | |
| Person / Time | |
|---|---|
| Issue date: | 03/11/1980 |
| From: | Plesset M Advisory Committee on Reactor Safeguards |
| To: | Dircks W NRC/EDO |
| References | |
| Download: ML25175A073 (1) | |
Text
UNITED STATES NUCLEAR REGULATORY COMMISSION ADVISORY COMMITTEE ON REACTOR SAFEGUARDS WASHINGTON, D. C. 20555 March 11, 1980 Mr. William J. Dircks, Acting Executive Director for Operations
- u. s. Nuclear Regulatory Coounission Washington, D. c. 20555
Dear Mr. Dircks:
Several NTOL plant test prograns are currently under consideration with regard to low power tests "1ich are designed to provide operational training and to obtain infonnation regarding plant perfonnance during anergency conditions.
Some of the comitions 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 bihding.
'!his would make necessary the use of the *feed-bleed* or *reflux-condensation* processes.
'lhese 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 comi-tions if we intend to depend on them during anergency conditions.
To this end, the ACRS recamnends that consideration should be given, if at all possible, to some verification testing of decay heat removal mder upset conditions during low power testing prograns.
Sincerely, Milton s. Plesset Olairman 2834