ML20003D445
| ML20003D445 | |
| Person / Time | |
|---|---|
| Issue date: | 01/19/1981 |
| From: | Minogue R NRC OFFICE OF NUCLEAR REGULATORY RESEARCH (RES) |
| To: | Rehm T NRC OFFICE OF THE EXECUTIVE DIRECTOR FOR OPERATIONS (EDO) |
| Shared Package | |
| ML20003D415 | List: |
| References | |
| FOIA-81-16 NUDOCS 8103270157 | |
| Download: ML20003D445 (2) | |
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JAN 191931 l'Ef',3RANDUM FO.R:
T. A. Rchm Assistant for Operations Office of the Executive Director for Operations FROM:
Robert B. !!inogue, Director Office of i:uclear Regulatory Research
SUBJECT:
COMENTS ON DECEMBER MEETING OF NUCLEAR SAFETY OVERSIGHT COMITTEE This memorandum is in response to your request (memo from T. A. Rehm to R. B. Hinogue dated Deccaber 30, 1980) for brief coments on the issues raised in testimony at the December 1980 HSOC meeting. Listed below are coments on the items which pertain to RES.
P.1 (Rasmussen)
Determine what safety risks exist end validate RES the risks (or refine the uncertainties). A research program should be geared toward prescribing safety standards.
Coment:
NRC does have a research program geared toward identifying safety risks and prescribing safety standards.
In the area of particular interest to Dr. Rasmussen, probabilistic risk analysis (PRA), RES has extensive efforts undencay to refine the PRA methodology.
RES is working closely with NRR and others to apply PRA to every single reactorplantthroughtheInterimReliabilityEvaluationProgram(IREP) and the National Reliab'iity Evaluation Program (NREP). In addition.
RES is conducting extensive research in the use of PRA in regulatory decisionmaking snd the setting of safety goals and standards.
NRC research dollars ought to be invested in RES aerosol release.
Coment:
NRC has had an aerosol release and transport program since December 1973. Current rate of expenditure is about $1,500,000 per year, down from $1,80),000 in FY 80 because of budget constraints.
Chief facility is the 76 clear Safety Pilot Plant at Oak Ridge National Lcboratory (ORNL) now being converted for use with steam. One of the world's leading experts on aerosol is et NRC: Mel Silberberg.
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T. A. Rehm P. 2 (Rasmssen)
Risk of steam explosion is less than postulated RES in WASH-1400.
Coment:
RES is aware of the data ar.d analyses now available which indicate that WASH-1400 was conservative in its estimate of steam explosion NRC sponsored research at Sandia National Laboratories p(robability.SNL) has been instrumental in resolving this technical issue, Revised lower estimates of that probability are being used in current risk assessments such as NUREG-0715 (Indian Point Task Force Report).
NRC state-of-the-art report on iodine not to P. 3 (Stratton, include the literature of their group (allegation).
et al.)
Coment:
R. Elrich, SNL, in charge of writing This is explicitly untrue.
chemistry chapters, has already spent significant time interviewing Also two r.d.NL chemists, Bell and Toth, Malinauskas and Campbell.
have been specifically selec'ed to collect the data referenced by Malinauskas and Campbell. Note that Malinauskas and Campbell, who 14, 1930 letter to the Chairr.an along with Stratton, signed the August It does not have identified themselves with a fixed point of view.
appear appropriate to have these same individuals write a report or.
a subject certain to be brought up in repeated licensing cases, especially Limerick.
DNAE ETGRED BY: D. F.,, gggggtg obert B. Minogue, Director f
Office of Nuclear Regulatory Research t
,