ML19308B820
| ML19308B820 | |
| Person / Time | |
|---|---|
| Site: | Crane  |
| Issue date: | 07/20/1979 |
| From: | NRC COMMISSION (OCM) |
| To: | |
| References | |
| TASK-TF, TASK-TMR NUDOCS 8001170365 | |
| Download: ML19308B820 (4) | |
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i 26 June 1979 Talked to@@ He talked toh}h[of the ACRS.
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(%jng. claims that Ebersole pursuedLQuesties26;relRebblel Fraley slwithHarleySilver(LPM). Silver is also the LPM for-TMI.
The ACRS claims that they weren't aware of the Michelson Report until after March 28, 1979.
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Called Nerl,ey,iS11ver,l(NRR) about Ebetsole's. discussion ofiQ-61with the s ta f f.
He was not involved with;febble,$p]ngjs Carl Stahle was and is the LPM.
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Called;CarEStahl,eiretQ-6.,1 The ACRS discussed Ebersole's 26 Questions at the January 1978 full ACRS Committee meeting. Stable seemed quite certain that there were no separate meetings with the staff. The only discussion was at the January 1978 ACRS meeting.
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- o 20 July 1979 Called 3hdie3(ACRS) author of th[et55dkijiddulitiiEk
-- He received the draft Michelson Report within a few days of its completion.
He wrote the Pebble Springs Questions following the Pebble Springs Subcommittee meeting (10/25/77).
-- He was not satisfied with the response provided by B&W through PG&E. He felt the response was vague and constituted a statement of general confidence.
He was not satisfied that people knew where the water was in PWRs:
in general (he strongly prefers BWRs)'
He has raised this issue before with an engineer named Peacock at the 1974 ACRS hearing re Diablo Canyon.
He agrees that he provided a hand-written draft of the Michelson report to Israel. He does not recall receiving any comments from Israel only a buck slip from Israel saying he'd try to take a look at it.
-- He didn't feel that the answers given at the ACRS hearing were very good either.
-- He didn't pursue the issue any further because he had raised the issue before the staff (copy to Israel, questions to PG&E, discus-sion at:the_ACRS' meeting).and he.had raised the issue with B&W.
(question to PG&E) and he felt (assumed) that the staff and B&W would recognize the significance of the issue and would pursue the issue themselves. He seemed to be concerned that if he pursued this and other issues more agressively he'd develop an image of the-boy-who-cries-wolf, and this would reduce his creditibility.
He never saw the Israel /Novak memo until after TMI but when he did see it he. felt that it should have been stronger.
-- He feels that Westinghouse and CE PWRs are more of a problem than B&W PWRs because there is no way to vent the steam generator U-tubes if non-condensible gases collect and stop natural circula-tion (no RCPs available).
-- He was not aware that the report was sent to B&W by TVA.
It is ironic that TVA sent the Michelson-Report to B&W because they anticipated a question from the ACRS about Bellefonte. However, Ebersole was the only ACRS member concerned with this issue and he would not have participated in the ACRS review of Bellefonte because he. worked for TVA. As it turned out, his involvement with the ACRS s
decreased significantly following Pebble Springs due to his wife's illness.
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He vaguely recalled Creswell's name (Creswell once worked fs? TVA)'
but he didn't have any involvement with him about the Michelson Report.
His primary concern with this B&W design was how close the water level came to the core. Very little (maybe too little) margin.
Also B&W claimed a cooling path (HPI through the PORV to the sump to the LPI to the HPI). He seemed to like that idea but he wasn't willing to accept that it would work until a more detailed analysis was provided. He says Westinghouse and CE don't claim such a path. Without this path the current comnercial PWRs must rely on the normal secondary system and it's too complex to use during an emergency. Also, he thinks the natural circulation tests are too structured and controlled to be of any real value.
He will be in Washington for the August 9-11 ACRS meeting and on July 29 to talk to the President's Comr..ission.
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