ML20127B449
| ML20127B449 | |
| Person / Time | |
|---|---|
| Issue date: | 03/15/1984 |
| From: | Dircks W NRC OFFICE OF THE EXECUTIVE DIRECTOR FOR OPERATIONS (EDO) |
| To: | Palladino NRC COMMISSION (OCM) |
| Shared Package | |
| ML20127B435 | List: |
| References | |
| FOIA-84-577 SECY-83-357, NUDOCS 8404100109 | |
| Download: ML20127B449 (2) | |
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MEMORANDUM FOR: Chaiman Palladino . ;
Comissioner Gilinsky Comissioner Roberts Comissioner Asselstine Comissioner Bernthal FROM: William J. Dircks Executive Director for Operations .
SUBJECT:
REC 0fEENDATION TO DEFER DECISION ON FINAL HYDROGEN CONTROL '
RULE (SECY-83-357)
The Comission has scheduled an affimation/ discussion and vote on the final Hydrogen Control Rule (SECY-83-357) for March 16, 1984. This memorandum is to infom you of recent test infomation which I believe warrants further consideration prior to your decision on SECY-83-357.
As part of a cooperative large-scale experimental program at the Nevada Test Station, EPRI has recently completed a series of hydrogen combustion tests in a 52-foot diameter dewar. The objectives of this research program were to confim test data on hydrogen combustion taken at smaller scale, assess the effects of igniter location on burning and obtain some generic infomation on the perfomance and themal response of selected nuclear plant equipment under a range of hydrogen burn conditions. Preliminary observations (Enclosures 1, and 3) indicate that there may be a potential problem regarding the behavior o electrical cables during a hydrogen burn at a hydrogen concentration of 13 percent. It should also be noted that after entry into THI-2 following the accident, damage was observed to the electrical cables.
The NRC staff and the contractors are currently in the process of analyz'ing the data in detail and evaluating the uncertainties and implications of the EPRI tests. This review will include all the equipment identified in Attachment 1 of Enclosure 1. I will continue to keep you advised on this matter as the post-test analyses are conducted and will provide recomenda '
tions to you on how and when to proceed with SECY-83-357.
(SignetDWilliam J.Dirch William J. Dircks Executive Director for 0 tions
Enclosures:
See next page ,
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Enclosures:
- 1. Memo 12/19/83 G. Sliter to Distribution w/2 att
- 2. Memo 2/17/84 G. Sliter to Distribution w/4 att 3.. Memo 2/16/84 R. Curtis to V. Benaroya, W. Butler, K. Kniel & V. Noonan w/ encl s
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RES RES RES MFleishman JMalaro RBernero l 3/14/84 3/14/84 3/14/84 t
REVISED IN EDO 3/15/84(5520/DED032) j see previous concurrences. ,
A l' 0FC :RES :RES :RES :RES :DD:RES :D:RES :EDO l' . _____:.._____..___:...______...:__........__:____________:_.........._:.____.......:.. __
NAME :FGillespie _:Larkins :0Bassett :GArlotto : Dross :RMinogue :WDirc DATE :3/14/84 :3/14/84 :3/14/84 ...:____...___..:___....__...:3/14/84
- 3/14/84 :3/14/84 : :3//_ 84 l
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