Transcript of the Advisory Committee on Reactor Safeguards - NRC

293 Pages·2014·2.91 MB·English

Official Transcript of Proceedings

NUCLEAR REGULATORY COMMISSION

Title: Advisory Committee on Reactor Safeguards
Meeting of the Fukushima Subcommittee

Docket Number: (n/a)

Location: Rockville, Maryland

Date: Tuesday, July 8, 2014

Work Order No.: NRC-898 Pages 1-293

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1
1 UNITED STATES OF AMERICA
2 NUCLEAR REGULATORY COMMISSION
3 + + + + +
4 ADVISORY COMMITTEE ON REACTOR SAFEGUARDS
5 (ACRS)
6 + + + + +
7 FUKUSHIMA SUBCOMMITTEE
8 + + + + +
9 TUESDAY
10 JULY 8, 2014
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12 ROCKVILLE, MARYLAND
13 + + + + +
14 The Subcommittee met at the Nuclear
15 Regulatory Commission, Two White Flint North, Room
16 T2B1, 11545 Rockville Pike, at 1:30 p.m., Joy Rempe,
17 Chairman, presiding.
18 COMMITTEE MEMBERS:
19 JOY REMPE, Chairman
20 DENNIS C. BLEY, Member-at-Large
21 SANJOY BANERJEE, Member
22 CHARLES H. BROWN, JR. Member
23 MICHAEL L. CORRADINI, Member
24 DANA A. POWERS, Member
25 HAROLD B. RAY, Member
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1 MICHAEL T. RYAN, Member
2 STEPHEN P. SCHULTZ, Member
3 GORDON R. SKILLMAN, Member
4 JOHN W. STETKAR, Member
5 DESIGNATED FEDERAL OFFICIAL:
6 WEIDONG WANG
7
8 ALSO PRESENT:
9 DON ALGAMA, NRC
10 SUD BASU, NRC
11 HOSSEIN ESMAILI, NRC
12 RICHARD LEE, NRC
13 ALLEN NOTAFRANCESCO, NRC
14 STU RICHARDS, NRC
15 MIKE SALAY, NRC
16
17 *Present via telephone
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1 T-A-B-L-E O-F C-O-N-T-E-N-T-S
2 ACRS Opening Remarks
3 Joy Rempe ........................................4
4 Staff Opening Remarks
5 Stu Richards .....................................6
6 Overview of Severe Accident Research
7 Richard Lee ......................................7
8 Molten Core-Concrete Interaction and Fuel-Coolant
9 Interactions (CSNI MCCI SOAR, NRC-IRSN-EdF testing)
10 Sud Basu ....................................... 25
11 Hydrogen (CSNI CAPS on hydrogen and ERCOSAM)
12 Don Algama ..................................... 65
13 Allen Notafrancesco ............................ 67
14 Fission Products Behavior (Phebus - ISTP CSNI-STEM,
15 CSNI-BIP2, SARNET2)
16 Mike Salay ..................................... 80
17 MELCOR Code: Status and Applications
18 Hossein Esmaili ............................... 110
19 Fukushima-Related Activities
20 Richard Lee ................................... 127
21 What Next
22 Richard Lee ................................... 132
23 Sud Basu ...................................... 147
24 Committee Comments ............................. 163
25 Adjourn ........................................ 178
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1 P-R-O-C-E-E-D-I-N-G-S
2 8:30 p.m.
3 CHAIR REMPE: This meeting will now come
4 to order. This is a meeting of the Fukushima
5 Subcommittee, a standing subcommittee of the Advisory
6 Committee on Reactor Safeguards, and I'm Joy Rempe, the
7 chairman of this meeting of the Fukushima Subcommittee.
8 ACRS members in attendance are Sanjoy
9 Banerjee, Stephen Schultz, Harold Ray, Dana Powers,
10 Gordon Skillman, Ron Ballinger, Charlie Brown and Mike
11 Corradini. Weidong Wang of the ACRS staff is the
12 designated federal official for this meeting.
13 In this meeting the Subcommittee will
14 review severe accident research activities conducted
15 by NRC's Office of Research, and we'll hear
16 presentations from the NRC staff. We've received no
17 written comments or requests to make oral statements
18 from members of the public regarding today's meeting,
19 and the enter meeting will be open to public attendance.
20 The Subcommittee will gather information,
21 analyze relevant issues and facts and formulate
22 proposed decisions and actions as appropriate for
23 deliberation by the Full Committee.
24 The rules for participation in today's
25 meeting have been announced as part of the notice of
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Federal
1 this meeting previously published in the
Register
2 , and a transcript of the meeting is being kept
Federal
3 and will be made available as stated in the
Register
4 notice. Therefore, we request that
5 participants in this meeting use the microphones
6 located throughout the meeting when addressing the
7 Subcommittee. The participants should first identify
8 themselves and speak with sufficient clarity and volume
9 so they may be readily heard.
10 And before I begin this meeting, I'd first
11 like to acknowledge that we have two members who showed
12 up late: Dennis Bley and John Stetkar.
13 And I'd also like to mention a couple of
14 facts about some background on this meeting with
15 respect to why we're having it.
16 In completing our biannual research
17 review, Dr. Lee and his colleagues provided me a lot
18 of interesting information such as new data from
19 international experimental programs, descriptions of
20 updates that they've completed on new models for and
21 analyses completed with their severe accident analysis
22 code, MELCOR, and ongoing efforts to update the
23 alternate source term. And although I've provided a
24 summary of this information in our report, I suggested
25 that Richard and his staff come provide our
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1 Subcommittee some additional details. And in
2 particular I've asked them to not only describe this
3 new information, but also ask them to emphasize the
4 impact of their new research results. And they've
5 graciously agreed to provide this information to us,
6 and I'd like to thank them in advance for their efforts.
7 So, Richard?
8 MR. LEE: Thank you. Instead of me giving
9 open remarks, Stu Richards, our deputy division
10 director from DSA will give the remarks. So, Stu?
11 MR. RICHARDS: I just want to say thank you
12 for inviting us to be here today. We appreciate that
13 and we do really appreciate the feedback that we get
14 from the ACRS.
15 I just want to acknowledge a couple, three
16 months ago Dr. Powers, and I think helped by Dr.
17 Corradini, came up to Church Street and addressed our
18 division with some insights about the ACRS. So today's
19 a little bit of a test for us to see if we picked up
20 on any of the tips that he provided, so if we will do
21 well on that.
22 Were you at that session, Sud? You look
23 surprised.
24 (Laughter)
25 DR. BASU: Yes.
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1 PARTICIPANT: Just don't listen to Dr.
2 Powers and Dr. Corradini.
3 DR. BASU: Yes, I was there as a matter of
4 fact.
5 MR. RICHARDS: But at any rate, this area
6 is very important to the Office of Research. We have
7 a lot of important work going on.
8 A lot on the agenda today and we do
9 appreciate the time you take to listen to what we have
10 to say and provide us some feedback. So thank you.
11 MR. LEE: Okay. Getting onto the severe
12 accident research, this is a view graph that we show
13 how the experiment is being used to validate the Code
14 and how it is used in our regulatory analysis to support
15 the agency various activities. On this side here are
16 the experiments. Some of them has been completed.
17 The ARTIST facility is being completed in Switzerland.
18 And these are the major output from the program. I just
19 highlight the output there, probably more than other
20 secondary results that come out from this program. But
21 this is the major thrust of the experimental program.
22 For example, the Phebus fission products,
23 that has been completed. The International Source
24 Term Program is still going on. There are some tests
25 that was ran that analysis of those are still going on.
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1 In terms of the Phebus, the fission products one is an
2 integral test. This program that follow onto the
3 fission product is a separate effect test and compose
4 of many, many parts that investigate different thing;
5 for example, control rod behavior and the major focus
6 is really on iodine chemistry.
7 The OECD-MCCI2 has also been completed and
8 there are some follow-on tests that we follow on with
9 the EdF, IRSN and us. We conducting two additional
10 tests since that program ended at Argonne National Lab.
11 That collaboration is still ongoing, but of course
12 those are focus on MCCI, which you will hear at the next
13 presentation. The OECD behavior of Iodine Project is
14 -- the major lab is doing it at the AECL, the Atomic
15 Energy of Canada Limited in Canada, and it is focused
16 on iodine chemistry.
17 There is also another program called the
18 OECD-STEM Project, which is also a OECD Project. It's
19 not listed here. And it's also focus on chemistry, but
20 it's complementary to the OECD BIP and STEM. Of course
21 we have the Cooperative Severe Accident Research
22 Program with NRC that has been in existence since after
23 the TMI when a lot of research, severe accident research
24 was launch in U.S. That program continue on. In early
25 '80s it was of course focus on experiment. Now it's
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1 focus on the MELCOR Code as the principal exchange from
2 the U.S. that we collaborate with other countries. And
3 in turn we getting all sort of experiment from other
4 partners. For example, the test that perform at
5 France for where high burnup fuel. We got it because
6 of the Cooperative Research Program. The quench data
7 on severe fuel damage that we get from Germany, which
8 we continue to get every year. And those are -- we got
9 those information without paying for anything.
10 And then of course we have the Zirc Fire
11 that has been completed at the U.S. OECD that we use
12 to validate the MELCOR model for the spent fuel pool.
13 The BWR was the first one conducted many years ago. The
14 PWR was just completed.
15 The SERENA Program, which is the
16 fuel-coolant interactions, that one has been
17 completed. Those are two program focus on that Sud
18 going to talk to you more about it. And one is in France
19 and the other one is in Korea. Those project probably
20 will spin off additional research, going to be come in
21 the future. We will talk about little bit more about
22 at the end of this today.
23 The codes are the MELCOR Codes and the
24 Texas Code, which is FCR Codes, because we do not
25 incorporate the fuel cooling reactions calculations in
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