ML20027D814
| ML20027D814 | |
| Person / Time | |
|---|---|
| Issue date: | 11/17/1981 |
| From: | Ahearne J NRC COMMISSION (OCM) |
| To: | NRC OFFICE OF THE EXECUTIVE DIRECTOR FOR OPERATIONS (EDO) |
| Shared Package | |
| ML20027A669 | List:
|
| References | |
| FOIA-82-426 NUDOCS 8211100127 | |
| Download: ML20027D814 (1) | |
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g UNITED STATES
!9 NUCLEAR REGULATORY COMMISSION f
y, WASHINGTON, D.C. 20085
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November 17, 1981 OPPICE OF THE i
COMMISSIONE;t MEMORANDUM FOR:
Executive Dir ctor for Operations FROM:
John Ahearne t_
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SUBJECT:
EQUIPMENT QUAL 7ICATION PROGPMi PLAN (SECYS-jil-504 AND603A)
In the briefing to the Comission on November 10,1981, due to lack of time my concerns expressed on my vote sheet on SECY-81-504 were not addressed. To help me in reaching a decision on both papers, I would appreciate your providing me answers to the following questions:
1.
Regarding the seismic qualification of electric equipment for plants:
I What precisely has been required for various vintage plants (IEEE-344 '71.
Have seismic tests ever been required as part of the sequential test, as specified in IEEE-323 19747 If yes, for what vintage plants?
! I What seismic problems or deficiencies have we found in SEP plants?
What are the findings of the SQRT case-by-case audits?
Are there any re-evaluations being made of the technical bases in the basic staff guides covering seismic areas (e.g., SRP 3.10 or any Regulatory Guides)? If not, why is it necessary to undertake the seismic qualification review of those' plants that have been reviewed against these staff guides?
Has a cost-benefit study been undertaken for expanding the review to include the seismic qualification of electric equipment?
i 2.
Do we have a set of conditions that are characterized as " mild environments"? Regarding the qualification of electric equipment for mild environments, what kind of an incremental benefit can we expect and i
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at what cost to both NRC and the regulated industry?
cc: Chairman Palladino Rec'd off. EDO Da'-
Comissioner Gilinsky Tirns..d Comissioner Bradford I "*** * *'
i Comissioner Roberts Secy 8211100127 821014 i
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