ML20005A507
| ML20005A507 | |
| Person / Time | |
|---|---|
| Site: | Crane  |
| Issue date: | 06/17/1981 |
| From: | Weiss E HARMON & WEISS |
| To: | Cutchin M NRC OFFICE OF THE EXECUTIVE LEGAL DIRECTOR (OELD) |
| References | |
| NUDOCS 8106300405 | |
| Download: ML20005A507 (3) | |
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June 17, 1981 Mac Cutchin, Esquire Office of the Executive Legal' Director U.S. Nuclear Regulatory Commission Was hingto n, D.C. 20555 RE:
TMI-Restart. Docket No. 50-289
Dear Mac:
I am enclosing a copy of a letter dated May 7, 1981 sent by Congressman Udall to Chairman Hendrie which is relevant to TMI-l restart issues.
Can you please tell me if the Chairman has answered the letter?
If so, I believe the answer should be served on the TMI-l Restart Board.
Verv truly yours, i
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The Honorable Joseph Hendrie Chairman, Nuclear Regulatory Commission Washington, D.C.
20555
Dear Mr. Chairman:
The record of the TMI inquiries indicates that during hot functional testing at TMI-2, a steam bubble developed in the high point of the pipe through which water flowed from the reactor pressure vessel to one of the steam generators.
(This seems to be the event described on page 65 of the Report of the Senate Special Investigation into the TMI accident.)
During the event in question, considerable difficulty was encountered in condensing the steam bubble, and it appears that persons present at TMI-2 on March 28, 1979 recalled this event as they sought to take actions to restore circulation between the reactor pressure vessel and the steam generators.
The recollection of the September 1977 event probably influenced judgements as to what would be required to restore circulation during the March 28 accident.
For example, Mr. Brian Mehler told NRC investigators that following closure of the PORV block valve there had been a plan to enter the reactor building for the purpose of manually opening a valve at the top of the hot-leg.
This plan was abandoned, however, once radiation levels prevented access to the valve in ques-tion.
Later in the day, in a conversation between Mr. Leland Rogers, a B&W engineer assigned to TMI, and B&W staff in Lynchburg, Virginia, Mr. Rogers, in disagreeing with advice that the primary coolant system be filled, indicated that he believed this could not be done.
In apparent reference to the 1977 event, Mr. Rogers said in that instance,
. it took us something like four days to get out of that thing to 7 > m,rsnd.. cool,it down to where we could get that bubble u-4e
.ot a similar condition here."
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