ML20056F277
| ML20056F277 | |
| Person / Time | |
|---|---|
| Issue date: | 05/05/1993 |
| From: | Rogers K NRC COMMISSION (OCM) |
| To: | Taylor J NRC OFFICE OF THE EXECUTIVE DIRECTOR FOR OPERATIONS (EDO) |
| Shared Package | |
| ML20056F270 | List: |
| References | |
| NUDOCS 9308260281 | |
| Download: ML20056F277 (1) | |
Text
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o UNITED STATES
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NUCLEAR REGULATORY COMMISSION 3
IE W ASHIN GTON, D.C. 20555 t
8 May 5, 1993 OFFICE OF THE COMMISSIONER MEMORANDUM FOR:
James M.: Taylor Executive Director for Operations
-i FROM:
Kenneth C.
Rogers Jb Commissioner l
SUBJECT:
ACRS REVIEW OF STAFF POSITIONS ON-SECY l 087, " POLICY, TECHNICAL, AND~ LICENSING ISSUES PERTAINING TO EVOLUTIONARY AND ADVANCED LIGHT-WATER REACTOR _(ALWR) DESIGNS" l
I read with interest the ACRS letter to the Chairman of April 24, l
1993 on the subject topic.
I thought their comments on the l
original SECY-90-016 issues of fire protection, hydrogen control, and core debris coolability of particular interest since SECY,
087 is before the Commission.-
The attached memorandum summarizes I
my understanding'of the ACRS concerns as to the staff bases in t
support of these three issues.
In particular, on the question of core-debris coolability of the System 80+ under severe accidents, I assume _that analyses of l
concrete ablation of the reactor pedestal in_large~sph'erical l
containments typical of the KWU-Siemens design performed at Karlsruhe are available to the staff.
Excerpts from a summary of l
this research are enclosed from a report dated December-19, 1988 i
l which presents results of Karlsruhe calculations of core-concrete i
basemat penetration in spherical containments.
I It would appear to me that the staff should analyze the depth of j
core melt penetration as well as gaseous reactant products for the System 80+ and possibly other advanced: light water reactors using equivalent NRC codes and data for these purposes..
I would appreciate your efforts to encourage the staff to buttress its position.on these issues.
u Attachment cc:
The Chairman Commissioner Curtiss Commissioner Remick l
Commissioner de Plangue 1
Secy i
DO,
008865 9308260281 930520
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