ML19338E307
| ML19338E307 | |
| Person / Time | |
|---|---|
| Issue date: | 04/06/1979 |
| From: | Hanauer S Office of Nuclear Reactor Regulation |
| To: | Office of Nuclear Reactor Regulation |
| Shared Package | |
| ML19338E305 | List: |
| References | |
| FOIA-80-445, FOIA-81-159, FOIA-81-97 NUDOCS 8009250453 | |
| Download: ML19338E307 (1) | |
Text
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UtMTED STATES j
4 NUCLEAR REGULATORY COMM!sSION
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Attached List if FROM:
S. H. Hanauer, Assistant Director for Plant Systems, DSS l
SUBJECT:
1.
EtNIRONMENTAL QUALIFICATION 2.
INSTRUMENTATION TO FOLLOW THE COURSE OF AN t. CIDENT I believe that as a result of the TMI accident, we have to rethink:
1.
Environmental Qualification envelope 2.
Things which have to be qualified 3.
RG 1.97 implemeritation
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Backfitting Changes in my thinking in'clude:
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Core damage is credible 2.
Long-term plant operation is essential; initiation isn't enough 3.
LOCA and SLB may not give an envelope that includes the TMI experience 4.
We are relying heavily on things not defined as " safety-related" (Browns Ferry was like that, also)
I believe that we will be required,' ju'stifiably, to hasten the pace of review and'backfitting decisions. We can't be defi,nitely quantitative until we have better data than now available (for exam? e, dose rates),
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,,but we can start thinking in principle.
Please start thinking about this problem.
I wiil set a due date for t
your. ideas as soon as we get off the ni~ght shif t.
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