ML19339C267
| ML19339C267 | |
| Person / Time | |
|---|---|
| Site: | Sequoyah  |
| Issue date: | 11/08/1980 |
| From: | Advisory Committee on Reactor Safeguards |
| To: | |
| References | |
| ACRS-T-0793, NUDOCS 8011180003 | |
| Download: ML19339C267 (25) | |
Text
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392 1
UNITED STATES OF AMERICA MEETING OF THE 3
ADVISORY COMMITTEE ON REACTOR SAFEGUARD 3 4
5 STAFF STATUS REPORT RE 6
HYDROGEN CONTROL AT SEQUOYAH 7
8 Saturday, November 8, 1980 9
'4 as hi ng t o n,
D. C.
10 The meeting came to Order,-pursuant to notice, at 11 11.10 a.m.,
where were present:
12 ACRS MEMBERS PRESENT :
13 M.
PLESSET, Chairman J. C.
MARK 14 C. SIESS
- 5. LA'4ROSKOI 15 M.
SENDER D.
MOELLER 16
'd. KERR M.
CARBON i
17 D.
'4 A R D
'4. MAIMIS 18 J.
RAY 4
19 DESIGNATED FEDERAL EMPLOYEE:
20 R.
FRALEY, Executive Director 21 ALSO PRESENT:
1 22 J.
M. JACOBE, Secretary i
23 24 25 ALDERSON REPORTING COMPANY,INC, 400 VIRGINIA AVE, S.W., WASHINGTON, D.C. 20024 (202) 554 234S
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MR. PLESSET:
Now we are going to have a little
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2 interruption in the second half of writing letters to get a 3 discussion on Sequoyah Nuclear Plant.
Mr. Stahle is kind 4 enough to come down here on Saturday, and
- .e certainly 5 appreciate it.
We would like to be able to let him get back 6 to his weekend activities as soon as possible.
7 Carson, do you want to introduce the people?
8 MR. MARKS I think, a s you re memb er, Sequoyah,
9 which has its license, was early in the business of sta rtin g 10 a test exercise on igniters for igniting hydrogen in 11 vessels, presumably in containment vessels.
We had not 12 heard very much.
But the first observations they had bden 13 able to make, at the same time the staff was working on a 0)
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14 program in support or in parallel at livermore.
I am not 15 sure, there may or may not be come work also under the 16 staff's guidance at Sandia, either being or planned.
J 17 And along with all that, there is the terms of the 18 license that Sequoyah has that, by Janucry 31st, they have 19 to have demonstrated to the staff something -- it was not 20 too clear what -- and that they have adequa te saf ety 21 margins.
And I think it is of interest to the Committee, 22 some of us on the Subcommittee in particular, just to get as 23 much of a warning as possible as to how that program is 24 going and what it is, if it is going to be available or 25 needed come January 31.
/9 ALDERSoN REPORTING COMPANY,INC, 400 VIRGINIA AVE., S.W. WASHINGTON, D.C. 20024 (202) 554-2345
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"So to the extent that is what you can tell us, it 73 2 would help.
Thank you very much.
3 MR. STAHLE My name is Carl Stahle.
I am the NRC 4 project manager for the Sequoyah plant.
This morning I will 5 provide a brief status report of the work going on on 6 hydrogen control measures for Sequoyah.
7 I would like to start basically where we left off 8 in September.
As you reca~11, September the 8th you did 9 provide us a letter.
First and foremost, you reiterated the 10 conclusion that you had made in July that we could license 11 Seq uoyah f or full power license.
12 Secondly, you did mention in the September letter 13 that it would be prudent to provide additional hydrogen
[~J) 14 control measures and studies ought to be continued and
~
15 intensively carried out.
16 You f urther indicated that we should demonstrate 17 -- and I shall read here, to put this in perspective:
The 18 effectiveness of candidate measures should be pursued 19 effectively on a time scale tha t would permit their 20 application for more than a few additional reactor years of 21 operation of an ice condenser plant."
22 A week after the letter was received we met with 23 the Commissioners and they did approve the licensing of 24 Sequoyah for f ull power operations.
However, there were 25 stipulated three licensing conditions.
I regard these as a qLj ALDERSoN REPORTING COMPANY,INC, 400 VIRGINIA AVE., S.W., WASHINGTON, D.C. 20024 (202) 554 2345
395 3
1 mandate from the Commissioners, and therefore it set the
.J 2 stage for the program we are embarking on.
3 Secause of its importance, let me again read the 4 license conditions, and this is the basis for proceeding:
5 "First, by January 31, 1981, TVA shall do testing 6 and analysis to show to the satisfaction of the NRC staff 7 that an interim hydrogen control system will provide'with 8 reasonable assurance protection against breach of 9 containment in the event that a substantial quantity of 10 hydrogen is generated."
11 The second condition:
"For opera tion of the 12 facility beyond January 31, 1982, the Commission must 13 confirm that an adequate hydrogen control system for the
()
14 plant is installed, and it vill perform its intended 15 functioning in a manner that provides adequate safety 16 margins."
17 The third, more administrative in nature, but:
18 " Dt
_he period of operation, TVA shall continue a 19 research program on hydrogen control measures and the 20 effects of hydrogen burns on safety functions, and chall 21 submit to the NRC quarterly reports on the research
~
22 programs."
23 That is the charter we began with when we licensed 24 Sequoyah for f ull power operations on September 17, 1980.
25 My purpose today is to provide you with an outline of the
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396 1 programs that are under way for meeting our first goal.
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2 Later on we will describe at subsequent meetings our 3 full-term program to meet our second license objective.
4 Secondly, today I do not intend to give you a 5 det ailed discussion of the results, principally because it 6 is premature to do so.
What I shall do is briefly provide a 7 scoping of the offorts that are under way.
Secondly, I 8 shall provide you a schedule here of extreme importance, and 9 principally I will identify the roles of the various people, 10 organizations and people who are involved here.
The idea of 11 the schedule is to make you aware of the extensive work that 12 is under way.
13 Additionally and most important today, I will make i
}
14 the Committee aware that it should plan for its t
15 participation in this effort. '
16 Now, at this poin t I would like to state that we 17 believe, in view of the mandate we have from the 18 Commissioners and the intensive interest th a t has been 19 expressed in this area, we will ask for your continued 20 participation in this matter.
And secondly, we will be 21 requesting a letter from you on the results of this program, 22 the first phase, which must be completed no later than 23 January 31, 1981.
24 You will see the schedule mandated again.
One 25 must be completed by January 31.
Utilizing that as the very h)
ALCERSoN REPORTING COMPANY,INC, 400 VIRGINIA AVE, S.W WASHINGTON, D.C. 20024 (202) 554-2345
1 397 1 end date, we anticipate that we will have an SER on this
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'de will us 2 satter, phase one, to be completed in mid-Decemb er.
3 be requesting a meeting on the 1st of January, the first 4 week of January, 1981, to assist us in this matter.
5 Secondly, we anticipate to go before the 6 Commissioners again some time in the middle of January to 7 present our findings and recommendations on the use of the 8 interim distributor ignition system.
9 Now, at this point in time the system is installed 10 and operable.
But the NRC has not authorized its use.
And 11 its use is pending the results of this first phase of 12 efforts that is under way.
13 Now, Let me take you to phase one effort here.
14 (Slide.)
15 The first listing I have here is the industry
-16 programs being carried out.
Phase one, called the Fenwal 17 phase one, these tests, were completed September 22.
The 18 purpose of these tests is to determine if the igniter would 19 burn hydrogen in hydrogen concentrations of between 8 to 12 20 percent for various environmental conditions cf pressure, 21 temperature, air flow across igniter, and humidity, and to 22 demonstrate the igniter durability.
23 The Applicant stated -- and I think we agree at 24 this point -- that the pressure, temperature, humidity and L
25 air flow across the igniter have little eff ect on the A./
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398 1 ability of the igniter to perforn.
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2 The first effort on phase one was encouraging, and 3 it is sufficient to proceed new to the more intensive 4 effort, which is now called phase two scheduled.
As noted 5 in this chact, completion is expected on or about the 24th.
6 l' is an extremely ambitious schedule.
7 Some of the material may not be fully completed, 8 as you will see as we get into the work.
The way of 9 defining the tests here obviously is an extension of phase 10 one.
'4 hat our intent here is in phase two is, one, to 11 establish the lowest hydrogen concentration at which the 12 igniter would initiate burning; much more detailed, of 13 cou rse, than we have been able to accumulate in the first 14 phases determine the igniter's ability to function in a 15 spray environment; three, confirm the multiple burns due to 16 continuous addition of hydrogen; and, fourth and moct 17 im po rtan t is to measure the effect of hydrogen burns on 18 representative samples of material and equipment inside of 19 containment.
20 Now, this last item mentioned is under intensive 21 investigation both by TVA and the staff, recogniring its 22 importance here to assure ourselves there are no adverse 23 effects from hydrogen burns inside of containment.
And so 24 the Applican t and ourselves are scing through detailed 25 analyses of lists of equipment necessary for operation of A
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399
):
1 the plant.
2 Materials a t this point have already been inserted 3 in the -chambers, looking at tables, some switch-costing 4 materials.
And from this we hope to determine, if 5 necessary, what. equipment may have to be hardened against 6 any hydrogen burn.
Again, this matter is under review.
7 Nothing more can be said at this point in time other than to 8 recognize its importance and that we must have a reasonable 9 assurance that there are no adverse effects prior to its use 10 in January.
11 HR. " ARK Just to get a feeling here, they have a 12 tank, a fair size, I believe.
It does not matter, the exact 13 size.
It is not a containment, but it is an experimental 14 tank with gauges and so forth.
How long does it take them 15 to get one data point?
16 Let's pretend tha t you have told them, we want you 17 to feed in hydrogen at some rate and store it, and run the 18 igniters and find out at what concentration it burns and how 19 much is burned, and now do that over assin when you put in 20 the same amount of steam as hydrogen.
How long to get the 21 first data point, then the second data poin t, that is going 22 to give a feeling how much they are going to know by 23 November 24th, which is exactly 11 days off?
24 Can they do this before lunch and again before tea 25 time, or does it take until Thursday when they start on O
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1 Monday?
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3R. STAHLE:
I will have Dr. Butler respond to 3 that.
He has been intimately involved in the test program.
4 MR. BUTLER:
It is my understanding they can run 5 between two and four tests a day, depending on the 6 parameters that are being changed.
7 MR. MARKS Things of the sort I mentioned, they 8 could do a couple of those a day?
O 3R. BUTLER:
Yes.
10 3R. MARKS Okay.
They will have a chance, then, 11 to really get quite a spectrum examined.
12 MR. STAHLEs I think they will be.
We feel 13 reasonably assured there will be a substantial amount of
()
14 data accumulated for such an analysis, certainly by the 15 completion of this period.
16 MR. LAWROSKI:
Can you refresh my memory with 17 respect to the composition that would have been included in 18 the phase one if they found postulated hydrogen, steam and 19 oxygen competition?
20 MR. BUTLER I do not recall the particular steam 21 content that Fenwal tests were going to be conducted at.
22 But at Livermore in th a t ve ssel we were testing up to about
^
23 35 percent by volume steam, with hydrogen up to 12 percent i
24 by volume.
I expect Fenwal is on the same order.
25 MR. PLESSET Are they going to measure pressures e
ALDERSoN REPCRTING COMPANY,INC.
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MR. BUTLER:
Yes, they will.
3 NR. PLESSET:
And they will get into detonations?
4 MR. RUTLERa I think they plan not to 5 intentionally test for detonable mixtures.
8 MR. PLESSET:
I wonder why not.
7 MR. MARK It takes two months to get the safety 8 evaluation report experimental apparatus.
9 (Laughter.)
10 MR. Pl.'SSET Is that supposed to be a reason?
11 MR. MARKS Sandia is proposing to do something.
12 They are going to get a steel tank, bury it, and then do 13 some detonations in it after they are sure that everybody is 14 standing back far enough.
(}
15 MR. PLESSET:
What are they afraid oft 16
- 43. MARKS R egula tion s.
17
( La u ch t er. )
i 18 MR. PLESSET Okay.
Go ahead, Mr. Stahle.
19 MR. STAHLE:
All right.
The second item, of 20 course, the halon systems and studies here are the bac'<up to 21 the interim distributor ignition system.
This work will be 22 completed by January 1, obviously a late da te, but 23 nevertheless the results we anticipate having earlier than 24 that.
4 25 MR. M3ELLER:
Could you expand on that, please?
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1 do not understand what the halon system study -- what is the v
2 object.' ve or the goal?
It is to put out the fire or --
3 3R. BUTLER:
No.
The objective is to assess the 4 feasibility of using halon as a mitigative measure where, 5 when you detect substan tial amount of hydrogen and before 6 any combustion of that hydrogen, you quickly inject the 7 necessary concentration of halon to prevent any combustion.
8 It is an inerting mechanism.
9 ER. 30ELLER:
And the igniters would not be on at s
10 this time?
11 3R. BUTLER It would be a separate -- of course, 12 if the igntters were proven unacceptable for whate'ver 13 reason, then we would have to go to a backup mitigation 14 system.
15 MR. M0ELLERs Thank you.
That explains it.
16 MR. MARK It is an idea in which you inert the 17 a tmosphere on the spot with the thing that is more effective 18 than getting the oxygen out q ui ck e r.
19 MR. MOELLER:
Okay.
20 MR. PLESSET Do you have any idea of the lifetime 21 of the igniters?
How long will the y last?
Will they find 22 that out?
23 MR. BUTLERS They do intend to run the igniters 24 for extended periods.
But whether they can define the 25 ultimate number of hours or not, I do not know if they s
ALDERSoN REPORTING COMPANY,INC, 400 VIRGINIA AVE., S.W., WASHINGTON, D.C. 20024 (202) 554-2345
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403 1 intend to rarry it that far.
But I think they will have Q
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2 information that will make them comfortable that the 3 igniters can stay on for at least a month without adverso 4 damage.
5 HR. PLESSET Fine.
6 Steve, did you have a comment?
7 MR. LAWROSKI:
On your point, if they don't have 8 the kind of data that you were asking about, then the people 9 should have some schedule of getting it or replacing the 10 igniters at some predetermined point.
11 MR. FEALEY:
This is once ti.?v get turned on 12 during the accident.
I don't think replacemer.t is 13 feasible.
It is a matter of how long they last once you 14 turn them on.
15 HR. LAWROSKIs They won't turn them en until --
16 MR FRALEY:
That is right, until the accident.
17
- 53. PLESSET I think the question.is a little 18 broader.
There might be alternate types of igniters that 19 could last indefinitely.
Is that being considered in the 20 longer ters?
21 ER. BUTLER:
Well, the TVA and the ice condenser 22 owners group, they do have a program to study alternative 23 igniters.
Also, EPRI has a contract with Rocketdyne to 24 study alternative igniters, including spark igniters.
25
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KR. STAHLE:
That's fine.
The last item 3 identified is EPRI.
'4e u nderstand they are planning or 4 proposing these four studies.
The information at this point 5 is somewhat sketchy.
Its impact or use for the first phase, 6 I think we do not f eel will be considered or vill be 7 useful.
But for the long term the program itself certainly 8 by 1982, this data may, in addition to what we are doing, be 9 useful.
10 It is an identification of what is involved in 11 industry and a recognition that this program is a very 12 intensive, broad-based type of program on the whole hydrogen 13 control measures.
14 (Slide.)
15 The second slide here is a con *:inuation.
As s.
16 mentioned before, the Lawrence Livermore National Lab here 17 is working on a program that is complimentary to the TVA 18 program, in that they are testing igniters like TVA and 19 planning a spectrum of tests in the varying percentage of 20 hydrogen, steam, and so forth.
21 In addition, I understand at this point their 22 objective is also to look at current h ydrogen analyzers in 23 the plants.
24 The second -- third item on the chart here, the 25 Sandia study of course is self-explanatory, an overall study O
ALDERSON REPCRTING COMPANY. INC.
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1 related to the halon, interim distributor ignition system, 7-L )
2 water fogging, all possibilities to hydrogen control or 3 mitigation systems.
4 The last item identified here on this chart is the 5 Zion.
Indian Point smudies, of course, originally began 6 back in January 1980 and continuing on.
Three parts of work 7 presently under way will be of use to us in incorporating e
8 into our own evaluations.
9 (Slide.)
10 I put this schedule -- this schedule has been 11 drawn up and illustrates two things I wish to point out to 12 you, namely the number of participants,
! course, involved 13 in this programs TVA, Livermore, Sandia, as well as six g ')
14 branches of NBC that will be actively involved in this r
\\J 15 program.
16 The second point that this schedule shows is 17 mainly the very ambitious type schedule which we are dealing 18 with.
You will recall that we do still have a mandate from 19 the Commissioners that all of this be done no later than 20 January 31, and therefore the schedule has been drawn 21 together and all of this data we hope to be completed, most 22 of it to be in by the 1st of December.
23 On the right-hand part of the schedule it shows 24 additional Fenwal, additional Lawrence Livermore work, 25 additional TV A submittals.
This is in anticipation that O
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(^T 1 testing work will probably still be going on, particularly V
2 in the area of survivability of critical components and 3 materials.
We factored that in at the last moment, and we 4 will make this material available to you as well as the 5 Commissioners.
We simply identified tha t on a schedule 8 chart to' recognize the fact of, again of the work and the 7 tightness of the schedule.
8 Six branches are identified.
The most important 9 branch was the fact tha t that is my branch.
The involvement 10 here is all of this material will need to be put together 11 ~ and form a safety evaluation report.
12 Last but not least, findings and recommendations 13 that we provide to the director and of course to the i(
)
14 Commissioners at that tame.
15 MR. MATHISs So f ar on the results to date, have 18 you had any surprises?
17 MR. STAHLE:
The Applicant provided me some 18 information on phase two, all of which seems to be quite
~
19 encouraging.
I could briefly go over this if you vi-h.
But 20 to my knowledge -- and maybe I could check with Walt Butler 21 -- ha ve there been any surprises in the program that you are l
22 aware of?
23 MR. BUTLER:
No.
24 5R. MAINIS:
Fine.
25 MR. MCELLEE Let me ask, if I nay, supposing --
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407 1 hey are going to need a hydrogen analyzer which acts on line 2 and warns them, you have two percent hydrogen in there, or 3 some -- I'll pick a number.
That doesn't nean they are 4 required.
That will presumably be one of the things that 5 will have to be in place before January 31.
They know they 6 have hydrogen.
7 And then they will have tested with the igniters 8 to show that, we usually ignite at whatever you like, 6 9 percent, we are absolutely sure we will ignite before 8, or 10 words to that effect.'
11 Is that then going to meet the kind of 12 requirements that will have to be met in January, that kind 13 of information?
[~)T 14 ER. BUTLER:
I am not sure I heard the very first 15 part of your question.
16 MR. MARK Since they don't turn on the igniters 17 until they think they are having hydrogen, they must have a 18 hydrogen analyzer, I suppose.
19 MR. lAWROSKI I thought they might turn on the 20 igniter even before they suspect hydrogen, if there is some 21 22 MR. BUTIER Their procedures call for turning on 23 the igniters as soon as they have a genuina LOCA on their 24 hands.
25 3R. MARK:
Okay.
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MR. STAHLE:
It is a safety injection signal that 2 would be the basis for turning on the igniters, not 3 necessarily 4
MR. MARK:
Very good.
5 MR. STAHLE:
This matter has still not been fully 8 resolved.
7 MR. MARKS It is a packet of that kind that is 8 expected to cover tiae needs of the current phase?
would you repeat that, 9
MR. BUTLER:
I'm not 10 please?
i 11 MR. MARK:
They have experience that says we 12 almost always ignite at 6 percent, and we are absolutely 13 sure we ignite before 8.
They have enough experimental data 1
)
14 to have established that.
That was what you wanted?
15 MR. EUTLER :
That is correct.
We have some 18 concerns about the degree of mixing, the distributions, 17 about th e ef fect of sprays on cooling the igniters.
These 18 things we have to -- we have to determine the effects of 19 these things as part of the task.
And when we satisfy our 20 concerns in that regard, we then conclude our review.
21 MR. PLESSET I think Bill, Dade and Steve.
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22 MR KERR:
What happens if you don 't meet the 23 schedule?
24 MR. BUTLER:
Well, it depends on which schedule.
s 25 You are talking about the January 31.date?
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MR. STAHLE:
I think at this point we have not O
2 cro ssed tha t bridge.
The manda te is -- circumstances may 3 require us to request some relief of that date, and 4 therefore we would go back to the Commission possibly for S the basis of why we need relief on this date.
There is a 6 date targeted, a degree of arbitrariness in that, in the 7 sense we feel the plant can still operate without the 8 interim distributor ignition systems.
9 But at this point, and from Project Management's 10 point of view, we regard that as a mandate and we will meet
- 11. it.
12 TR. BUTLER:
It depends on why we don't meet the 13 schedule.
For example, if we find unacceptable results, I 14 think you have to wait until you get to that point and find
)
15 out why you are missing the schedule.
Is it simply because 16 reports cannot be published in time?
I think then the 17 consideration of relief might be appropriate.
18 MR. PLESSET:
If things look very black, I think 19 there will be some motion upstairs to ask that the license 20 be suspended.
21 XR. SIAHLE:
There is the element of adequacy of 22 our evaluation.
23 MR. PLESSET It seems to me it looks quite 24 hopeful right now, as I expected before the start of the 1
25 tests, I must say.
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MR KERR And it was your view that hydrogen and a 2 suitable mixture of oxygen could be ignited.
3 MR. PLESSET:
Yes, that was my position, Dr. Kerr.
4 MB. STAHLE:
I have seen, and the Applicant feels 5 very confident a t this point, the data he has to date.
He 6 is very encouraged that the igniters are reliable, will 7 work, and so everything is -- again, I emphasize, probably 8 the most difficult area is the question of survivability of 9 equipment.
They are working very hard on that, because that 10 is a very difficult area, very difficult.
11 MR. PLESSET:
Dade and then Steve.
12 MR. M3ELLER:
I note, and you have just shown us 13 on those charts, that Lawrence Livermore, Sandia, and TVA
()
^14 are involved.
What about the utility that operates D.C.
15 Cook; aren't they involved?
16 MR. STAHLE:
They are part of the owners group 17 here.
18 MR. M0ELLER:
I see.
Okay.
I guess the other 19 question -- and it is just a thought to add to Mr. Kerr's --
20 and that is what would be the implications for D.C. Cook if f
21 you do not meet the deadlines?
~
22 MR. STAHLE:
I cannot address that.
23 MR. EUTLER Let me try to respond to that.
We 24 are dealing with the hydrogen issue on all the plants on a 25 case by case basis.
Now, the license condition that exist O.V ALDERSoN REPORTING COMPANY,INC, 400 VIRGINtA AVE., S.W WASHINGTON. D.C. 20024 (202) 554 2345
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1 today is one that applies to Sequoyah only.
Now again, if kJ 2 the reason for not satisfying tee license condition is 3 because we find that we are not satisfied safety-wise, then 4 that would' have an impact on D.C. Cook and the other ice 5 condensers as well.
8 We have issued a 50.54(f) letter to D.C. Cook, 7 basically succesting that they consider the license 8 conditions on Seque,yah as to applicability for D.C. Cook.
9 And we are taking steps to get the D.C. Cook people up to 10 speed with the Sequoyah people.
They will be treated in 11 much the same way.
12 MR. STAHLE:
I might add, they have been not 13 participants but observers at meetings, and they are
()
14 tracking this very closely, obviously for reasons that are 15 self-evident.
16 HR. PLESSET:
Steve?
17 HR. LAWROSKIs Assuming you find that the igniters 18 are acceptable with you, will your tests on the f actors tha t 19 influence the performers of the igniters include enough to 20 be able -- for you to be able to determine whether or not 21 the igniters have to be replaced or not, depending on 22 whether you have a. core spray actuation, first without the 23 additive having been added and then, in the second instance, 24 if the additive has been added?
25 MB. BUTLER:
Okay.
Clearly, once you have the O
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412 1 igniters in containment and you need them, you turn them on,
)
s 2 you do not have access to them for any replacement.
So that 3 if it turns out that the chemicals mixed in the containment 4 spray system would have an adverse effect on the igniters, 5 then we would have to have a resolution to that problem.
6 Now, we do have a second phase to this igniter 7 review pro; ram.
We have a 1981 license condition.which is 8 the interim program.
We are also under way with a final 9 program for Sequoyah which has a January 31, 1982, 10 concluding date.
11 Now, we could well look into this longer-term item 12 of yours as part of that second phase.
13 MR. LAWROSKIs You see, it is quite possible that
()
14 the igniter may function well shortly after spray has been 15 actuated, with or without the additives, but six months 18 later, as a result of -- I want to make sure you know 17 whether or not you plan to test them, bound that.
For 18 example, if you don't conduct tests for beyond six months 19 after you won't know.
20 MR. PLESSET:
It is a fac'etious remark, but I 21 think you have made the point, Steve.
22 Okay, go ahead, Mr. Stahle.
23 MR. STAHLE:
I just wanted to indicate, I know 24 there is a surveillance program associated wi th the 25 gniters, and therefore that would ensure continued 1
O ALDERSoN REPORTING COMPANY,INC, 400 VIRGINIA AVE., S W., WASHINGTON. D.C. 20024 (202) 554 2345 1
413 (G'T 1 operability.
j 2
MR. PLESSET:
He is commenting -- his comment 3 relates to your question.
4 MR. STAHLE:
There has been and will be in place a 5 surveillance program.with respect to the igniters, and they 6 will be periodically tested to assure continued operation 7 over'the period of time.
So I think -- I know that is under w
3 way with TVA and will be part of a surveillance program, if 9 this is what you are alluding to.
10 I think TVA is considering this.
This is not to 11 say we won't be running duration type tests.
So I think 12 your point is, what happens over some long period of time.
13 The answer is, they will assure, through the surveillance T,,
14 program, they are operable and continue to do so.
l
~
15 MR. BUTLER:
But basically, the igniters are to t 18 planned to be used unless there is an accident.
Any use of 17 the igniters will be just for test purposes prior to an j
18 accident.
19 MR. PLESSET.
Is that it?
Let me ask one 20 different questions.
There are two ice condenser plants in 21 Japan that have been operating for a while.
Have they shown 22 any interest in this?
23 MR. BUTLER 4
'de have not had any communications 24 with them.
25 MR. PLESSETs I did not think that they cared OV
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C.sERSCN REPORTING COMPANY,INC.
400 VIRwlNIA AVE., S.W, WASHINGTON, D.C. 20024 (202) 554 2345
414
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1 about it, from my contact with them.
They are not 2 interested.
Okay.
3 MR. STAHLE:
I promised to keep it down to this 4 period of time.
I could go tato the various functions and 5 responsibilitias of the branches.
Ort I think it is fair to 6 say that we now have a very involved, intensive program, and 7 with a very tight schedule, all of which culminates coming s
8 to you with an SER, again hopefully to be able to sit down 9 with you the 1st of January in expectation of getting a A
10 f avorable letter.
11 MR. PLESSET:
Okay.
Well, thank you, Mr. Stahle.
12 We appreciate it.
13
'.ereupon, at 11:50 a.m.,
the reported portion of
)
14 the meeting was concluded.)
15 16 17 18 19 20 21 22 23 24 25 ALDERSoN REPORTING COMPANY,INC.
400 VIRGINIA AVE., S.W., WASHINGTON, D.C. 20024 (202) 554-2345
1 NUCLEAR REGULATORY CO.* EMISSION This is to certify tha: the attachec proceedings before One
~
ACRS/247th General Meeting in the : atter of:
Staff Status Report re Hydrogen Control at Sequoyah Cace of ?roceeding:
- 1ovember 8, 1980 Docket !!ue:b er:
? lace of ?roceeding:
Washington, D.
C.
s were held as herein appears, and tha: this is the original transcrip thereof for the file of the Commission.
David S.
Parker Cfficial Reporter (Typec)
?C 5.1/
(SIGNATURE CF REPCRTER) e 4
CN V
1 i