ML20003D430
| ML20003D430 | |
| Person / Time | |
|---|---|
| Issue date: | 12/22/1980 |
| From: | Arlotto G NRC |
| To: | Dircks W NRC OFFICE OF THE EXECUTIVE DIRECTOR FOR OPERATIONS (EDO) |
| Shared Package | |
| ML20003D415 | List: |
| References | |
| FOIA-81-16 NUDOCS 8103270112 | |
| Download: ML20003D430 (2) | |
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g g NUCLEAR REGULATORY COMMISSIONyf 5,
g, wemci on. o. c. mss DEC 2 21980 MEMORANDUM FOR: William J. Dircks, Execu,tive Director for Operations FROM:
cuy A. Arlotto, Chairman, Degraded Cooling Steering Group
SUBJECT:
COMENTS ON PROPOSED RES PROGRAM " STATE OF TECHNOLOGY REPORT ON RELEASE OF FISSION PRODUCT I0 DINE" At its November 26, 1980, meeting, the :agraded Cooling Steering Group considered an RES-prepared draft outline for a proposed contractor-prepared*
state of technology report on release of fission-product iodine.
The Steeri.ng Group endorses this effort, subject to the provisions noted below.
The Steering Group believes that an in-house report of the impact of fission-product iodine and fission-product aerosols on past licensing practice, present regulations, and possible future licensing application (in particular for core-melt accidents) should be prepared in parallel with the proposed n contracted state of technology report.
The in-hause report is necessary so that the contracted state of technology report conclusions, in particular possible changes in our technical understanding, can be quickly evaluated in their licensing context. An example of why we believe that this parallel in-house report is important is the following:
To sonie extent, emphasis has been placed on iodine in accident analysis as -..
a surrogate for the whole collection of solid fission products.
This has provided an allowance for our ignorance of the behavior of many of the other fission products.
The shortcoming of this procedure is that it has led to the development of engineered safety features specifically tailored to iodine attenuation when perhaps our view of all the other fission products should have been more balanced.
In any case, we are obliged to take a closer look at the balance of the fission products and-at their attenuation by engineered safety features whenever a substantial reduction in the iodine source term is contemplated, such as is the case today.
The Steering Group recommendation is, therefore, made with the goal of keeping the licensing impact in perspec'tive as iodine and aerosol attenuation factors are developed. We wish to assure that a balanced viewpoint on all forms of iodine and all other related major fission products is maintained. To assure completion of this effort on a timely schedule, I plan to take the following action unless you object:
Ass.ign Denny Ross an action item as member of the Steering Group to set up an ad hoc in-house group to develop a report as discussed above 'on a schedule consistent with the Research L
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'.'l!IlliamJ.Dircks DEC 2 21930 report on the state of technology of iodine.
Providing the needed personnel to staff the ad hoc group will be accomplished through the office representatives on the Steering Group (i.e.,
Ross for NRR, Bernero for RES, and Arlotto for 50).
I have spoken with Ross, and he agreed o take on this act'on item.
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-t Guy A Ar1 to, Chairman Dcgra ed Cooling Steering Group cc: Steering Group Members R. M. Bernero, RES e
G. H. Cunningham, ELD e
B. K. Grimes, IE C. N. Kolber, RES M. S. Medeiros, Jr., SD D. R. Muller, NRR I. C. Roberts, SD J< F. Ross, NRR W. R. Canton, NRR R. B. Minogue, RES R. G. Smith, SD e
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