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Transcript of 850619 Meeting in Oak Harbor,Oh Re Action Plan on Turbine Bypass Valve Following 850609 Event.Pp 1-29
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Issue date:	06/19/1985
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1 1

BEFORE THE PACT FINDING TASK FORCE 2

OF THE NUCLEAR REGULATORY COMMISSION 3

4 Re:

5 Davis-Sesse event 6

of June 9,

1985 7

8 P R O C E E D I N G S 9

10 Proceedings before the Nuclear-Regulatory 11 Coomission Fact Finding Task Force in regard to the 12 aforementioned e v -e n t, held at Conference Room 209, 13 Davis-Besse Nuclear Plant, oak Harbor, Ohio, 14 commencing on Wednasday, June 19, 1985, at 11:22 15 o'cloca a.m.

16 17 la 19 20 21 I

d 22 i

j 23 8507290237 850619 PDR ADOCK 05000346 PDH i

7

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24 j

RUNFOLA & ASSOCIATES (614)445-8477 COMPUTERIZED TRANSCRIPTION

2 1

PRESENT:

2 3

J.

T.

Beard 4

E.

Rossi 5

Walt Roger:

6 Nick Jackiv 7

Jonn Wood S

Steve Wideman 9

Larry Grime 10 Dannis Mominee 11 Jim Helle 12 Mitt Raynes

}

13 Tom Hiss 14 Phil Hildebrandt 15 Randy Kies 16 17 18 19 20 21 22 23

(}

24 RUNFOLA & ASSOCIATES (614)445-8477 COMPUTERIZED TRANSCRIPTION i

i

3 1

Wednesdsy Morning Session 2

Juno 19, 1935 3

11:22 o' clock a.m.

4 5

P R O C E E D I N G S 6

7 MR. ROSSI:

We're bacK then to tals about 8

the action plan on the turbine bypssa valve.

And I 9

guess, lot me start.

I got a couple 10 MR. BEARD:

The record should show that 11 the steno has bean given a copy to be pinced in the 12 record.

And you want to m3ntion tne exact title of

)

13 the document or something so it can be idantified?

14 MR. ROSSI:

You'll identify it as an 15 exhibit, right?

Fina.

I just wanted to point out 16 that enis is one where I understand Region 3 is 17 going to provida un pictures of the valve.

I just 18 talked to your senior rosidsnt, Walt Rogers oh, 19 you're right there.

I didn' t see you.

Okay.

And 20 ne agread to gat us some picturas of it, and they'll 21 be following that.

22 And also this is ons where saving the 23 broxen parts will really be a meaningful item of

()

24 what you need to do.

And then I have a general RUNPOLA & ASSOCIATES (614)445-3477 COMPUTERIZED TRANSCRIPTION l

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4 1

question on wa te r hammer.

Presumably water hammer m

2 is what caused this.

And to what degreo have you 3

reviewed the industry-wide, the INPO and NRC IE 4

Information Noticas on this general subject of water 5

hammer, because, you know, there have been a lot of 6

things put out to give people the benefit of 7

descriptions of experience with water hammer.

And 8

nave you done that at this plant?

I mean, maybe not 9

as part of this action plan, but has that bean done?

10 MR. WOOD:

I'm not sure we have the right 11 people in the room that could answer that at this 12 point.

We have dealt with some wa te r nammer 13 situations at the plant previously.

We hava a 14 auxiliary teodwater neader wheroby we nad some 15 review of industry problems and ended up putting an 16 external ring header on our staam generators as 17 opposed to our interns 1 header, and that got us la quite involved with some hammer problems and some 19 industry discussion at that point.

20 And we currently hava activo I'm not 21 sure water hammer is the right term, but a dater 22 phenomenon on the a u r.. toed pump steam supply linas.

23 To answer your specific questions, I'm not sure that

()

24 we have the people in the room that could fully RUNPOLA s ASSOCIATES (614)445-0477 COMPUTERIZED TRANSCRIPTION

5 1

address that.

7-

~V 2

MR. WIDEMAN:

We do on IE Information 3

Notices as a part of our policy here is to provide a 4

written evaluation of that information notice and 5

how it portains to Davis-Besse if it does.

6 MR.*ROSSI:

Okay.

Then I had on Page 3 7

one specific question on hypothesis No.

2, and 3

that's the valve internals being assembled in the 9

fashion to inhibit proper operation and the fact 10 that you indicate that the most likely causa of the 11 problem was a combination of hypothesis 1 and 2.

12 And I was wondering if you could expand on what you 13 believe the involvement of item No. 2 to have been 14 in this?

15 MR. WOOD:

Okay.

I'd like to direct your 16 attention to the other side of the table who are the 17 people who will be answering. questions regarding 18 this action plan.

We have starting in the. corner 19 there in the striped shirt Matt Raynes, Tom Hiss, 20 Phil Hildebrandt, who you have met, and Randy Kies.

i 21 Just for further introduction, Matt Raynes is in our 4

i 22 maintenance department, Tom fliss in our engineering I

23 department, Phil, of course, consulting, and Randy

()

24 Kies from Bechtel. corporation.

RUNFOLA & ASSOCIATES (614)445-8477 COMPUTERIZED TRANSCRIPTION i

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MR. ROSSI:

Could one or you than expand 2.

on what you believe the involvement of the valve i

3 internals being assembled in a tashion to inhibit I

.4 proper operation, exactly what tha t means with 5

respect to this event?

1 I

6 MR. RAYNES:

Okay.

Page 2 on hypothesis, l

7 on visual inspection of the valve, the main things i

(

8 that we got for differences are mentioned here and i

i t

9 on the letter of tne walkdown.

At.this time we 10 don't have the right drawings to address this i

11 properly.

We oon' t have the dimensional drawings..

l 12 They're coming in from Fisher.

O i

13 But for the basis of our hypothesis now, 4,

14 we' re going with the evidence that we see the t

i 15 biggest difference between this valve and any others, i

16 and the other five.

t I

17 MR. BEARD:

Excuse me, are you referring i

i 18 to the statement where it says the deals with tne 19 valve stem thread dimension and continues on to-l 20 mention the pin connector was in contact with the 21 sleeve assembly, is that what you're referring to?

22 MR. RAYNES:

Yes, I am.

i 23 MR. ROSSI:

So you believe that that might

()

24 hsve been a factor in damaging the valve where this 1

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1 valve got damaged and others didn't; is that 2

MR. RAYNES:

Yes, yes.

3 MR. ROSSI:

Okay.

I understand, I think, 4

what you mean.

J.T.

?

5 MR.

BEARD:

This turbine bypass valve 6'

writa-up or action plan, I guess we're calling them, 7

seems to have in tne summary of da ta some 8

information about when the. thing may have failed and 9

under what conditions.

I'm just trying to 10 understand it because a lot of tnis is new 11 intormation to me personally.

12 We had some perception that mayDe a bypass p

v 13 valve related'to the dearator spray' regulator was 14 opan, and I guess I had the perception tha t may have i

1 4

15 contributed to the source of water that would have 16 ultimately led to a wa te r hammer.

And I guess I'd 17 be curious, it's not really a comment, but I'm just 18 curious if you could sort of help me understand what 19 we are talking about here.

20 MR. RAYNES:

All right.

On the first 21 aspect, the. power of the desuperheater. backing up 22 into the line, on inspection of-the PNIDs and the 23 drawings, tha t is on the other_ header,'that

'24 connection.

RUNFOLA & ASSOCIATES (614)445-8477 COMPUTERIZED ~ TRANSCRIPTION w

1 8

1 MR.

BEARD:

On the other heador.

0 1

2 MR.

RAYNES:

Yes.

So that would be on the 3

B header.

T t.i s is on the A header.

So wa had to 4

dispel that.

5 MR.

BEARD:

Now ruled out as the cause.

6 MR. RAYNES:

Right.

7 MR. ROSSI:

Okay.

So now wo're to the 8

point.where we aren't sure what the basic cause of 9

the water hammer was.

10 MR. RAYNES:

Undsr investigation with Phil, 11 he can fill you in on some of the information we 12 have correlated.

He can probably tell you more 13 about looking at the water hammer.

14 MR. HILDEBRANDT:

T-h e sequence of evants 15 that appears to have occurred, the MSIVs were closed.

16 The header having the-turbine bypass valves on them,.

17 on it, was isolated and cooling.

We have 18 temperature data which shows the A header went down 19' to about 140 degrees below steam temperature.

The'B 20 header, which was the one with the undamaged valves, 21 stayed up close to steam temperature.

. Why the r

22-difference we have no answer at this particular 23 point.

()

24 Upon deciding to further cool.the plant RUNFOLA & ASSOCIATES (614)445-8477 COMPUTERIZED TRANSCRIPTION

9

'l tnen to go to Mode 5,

the bypass around MSIV is 2

opened,.a small lino, one inen line.

The drains are k

3 closad to facilitate pressurizing the turbine bypass 4

header.

And steam than is admitted.

And presumably 5

the hypothesis is that that steam condensed.

We had 6

water sitting in the header.

7 The drains are reopened by the procedure 8

prior then to opening turbine bypass valves.

We 9

only'have a suspicion at this point, but believe at 10 least one of the two drains is not operable, and-t 11 another one may ce may not be operable.

So tnere is 12 a possibility of water emaining in the neader.

And

[

13 at the time there when the turbine bypass valve 13A2 14 was opened, vi believe tne water hammer occurred at 15 that point in time.

16 MR. ROSSI:

Okay.

Now, so now the issue 17 on wnat caused the water hammer really may be bacx-18 with a couple inoperable drains?

19 MR. HILDEBRANDT:

Yas, sir.

120

-MR.

ROSSI:

Have those drains been added 21 to the quarantine list?

I mean, I assume there's 22 going to be a troubleshooting 23 MR. BEARD:

May want to ask the licensees I ()

24 instead of the consultant.

b

'RUNPOLA & ASSOCIATES (614)445-8477 COMPUTERIZED ~ TRANSCRIPTION

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MR. ROSSI:

I'm asking the room.

[

2 MR. WOOD:

No, they have not been.

They i

3 have not altered the equipment freeze list.

And, in i

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4 fact, we had - hopad to discuss, I guass, the. turbine 5.

bypass valve arrangement in the context of removing F

6 i t from the freeze list:with'our impression that the i

7 bypass valve failure occurred in a time trame i

8 sufficiently removed from the-sequence of events

-9' that were,,I g u e'a s, under close scrutiny of the 10 other activities that are ongoing that it justified 11 removing it from the equipment freeze list.

12 MR. ROSSI:

Well, I' guess I would say that 13 it shouldn' t be.

My feeling is you've got the plan I

14 here.

You ought to Reep. the records, find out what I

15 caused the water hammer.

But my feeling is the

)

16 drain valves I assume you're going to do a 17 troubleshooting of the-drain valves.

I mean, it may j

actua'ly'be a problem with the drains j u s t., d i d n ' t i

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19 work.

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20 MR. RAYNES:-

They're actually steam traps.

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21

/

MR. ROSSI:

Or steam traps actually just 22 didn't work, and that may be-the problem.-

I think-l 23 in'the spirit of finding.out.what the root cause of i

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associated with the transient are that you ought to 7-2 add those to tne quarantine list and do your 3

troubleshooting the same way you're doing this, the 4

other troubleshooting for the equipmant.

5 As for this particular plan, you got it 6

developad.

And the only thing that I would see that 7

taking it off the quarantine list might do is it 8

might lose tne careful records and the padigree of 9

doing the troubleshooting so that when you get done, 10 we don't have an explana tion to what happened.

And 11 I don't feel comfortable with that.

12 MR. WIDEMAN:

I guess our point was that

)

13 it was after the avant and did not cause an 14 initiation of the event or significantly contribute 15 to the event, so that's what our reason was.

16 MR.

BEARD:

I think you're right, that it 17 may be, the safety significance of this occurrence, 18 tne bypass valve failuro may not be large, but 19 it is certainly a part of the event.

And it, if 20 nothing else, added contusion to the things that the 21 operators had to deal with.

And, you know, in that 22 context, that the safety significance of it may be 23 small, out I'm not certain in understanding tho

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24 totality of tha event tha t it ought to be dropped RUNFOLA & ASSOCIATES (614)445-8477 COMPUTERIZED TRANSCRIPTION

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in terms of following it carefully.

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.MR.

ROSSI:

Yes.

That's my feeling too.

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~3 I think in looking for root causes around the i

4 circumstances.cf this avent, that one of the things f

i 5

we're going to do is look at the root cause that you l

6 tind with each of the number of pieces of equipment i

7 that failed or worked improperly, and then there's j

8 also going to be a careful look by this team at the j

9 totality-of the failures and problems that you had 10 as to the root cause of those problems.

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11 I mesn, is.there a maintenance problem l

12 that had affected the totality of tne e q'u i p m e n t.

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v 13 And that's why I tnink you ought to keep this on the r

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14 list and add the drain lines to the list, do those l

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15 things carefully so that we xnow, you know, the root 16 cause of the totality of problems as well as the j

l 17 root causa of each individual one.

18 MR. WOOD:

Okay.

We will identify the i

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19 steam traps by number then, add those to the i

20 equipment fraeze list.

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21 MR. BEARD:

So you'll add those to the i

22 freeze list?

l 23 MR. WOOD:

Yes.

-(

24 MR. BEARD:

So we would expect to see in

)

RUNFOLA & ASSOCIATES (614)445-8477 i

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some'short period of timo some revised equipment 2 Ifreeze list.

3 MR. WOOD:

Yes.

And we will intorm the 4

equipment supervisor.

i 5

MR. HELLE:

Was an alternative to that 6

possibly to include the inspection of other steam 7

traps and drain. valves associated with the line.and in the troubleshooting snd 8

the valve in tne 9

investigation plan, and make it a part of the 10 troubleshooting program for tnat turbine bypass 11 valvo rather than adding tne specific items to the i

l 12 ching?

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13 MR. ROSSI:

I'd be perfectly happy with i

14 that.

That would have the advantage that what we 15 really want is you to keep careful records of what I

16 you find there.

And I'm not sure that we naad to 17 get into the details of what you're going to do with 18 the drains, but that ought to be a part of this.

l 19 And so that's fine with me.

I i

l 20 MR. HELLS:

To include it as part of the i

21 investigative work and troubleshooting work 22 associated with the bypass valve.

23 MR. BEARD:

I think we would be

)

24 comfortable if on your oWn you foldGd th3t'into this RUNFOLA & ASSOCIATES (614)445-8477 CONPUTERIZED TRANSCRIPTION l

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1 program, and we would be provided a copy of that P

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revisad thing.

But I don't see at this point it 3

would be necessary to convene:another meating to 4

4 discuss it.

5 MR. HELLE:

Okay.

I 6

MR. ROSSI:

That sounds good.

7 MR. BEARD:

Along that same'line, would it 8

be then your in te.a t to include a revisad action plan I

9 addressing the matter of the temperatures on tne 10 headers tha t the gentleman referred to earliar of 11' apparently for reasons that are unknown'at the 12 moment that temperature did fall for some 140 13 degrees, and I get the gist that the condensation 14 that may have resulted could hsve baen the source of 15 the wa ter that led to tne water hammer.

Is that j

16 your intant o r -- I do not want to put words in your I

17 mouth.

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18 MR. II E L L E :

No.

I think that that would i

l 19 be a good idea, to include the observations that

)

20 Phil made regarding that header differential i

21 temperature in the possible generation -- or being i

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22 the source of the condensate would be a-good idea.

i 23 MR. BEARD:

Because this ties.right into a

()

24 comment I was going to make a little later but it i

RUNFOLA & ASSOCIATES (614)445-8477 l

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I seems appropriate to bring it up now.

i 2

MR. II E L L E :

So we'll include those two

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items in the discussion of the header ditterential

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4 tamperature and the possible davelopment ot 5

condensate in the one header, and slao include in 6

the troubleshooting action plan the investigation ot i

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7 the traps and drains associated with this valve.

3 MR. WOOD:

Tha t's correct.

9 MR. ROSSI:

J.T.,

do you have any other 1

10 comments on the plan?

i 11 MR. BEARD:

Let's see.

I guess we got

)

12 into this discussion because I was intrigued by this 13 sdditional information about why it may have i

f 14 occurred or precisely when and whatnot, but let ms 4

i 15 go on nere.

i 16 MR. RAYNES:

I'd like to just add I

i 17 something on the reopening of the traps and drains.

4 la We haven't had a chance yet to talk to the operators 19 on exactly how they do t n ri t, so tna t would bo 1

20 another -- something to look at, you know.

If one i

2 i

21 steam trap on that neader was worxing, then that 22 might be sufficient drain-oft, but if tney had not l

j 23 opened i t prior to actuating the valve, that might i ()

24 be something to t<tke into consideration.

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MR. ROSSI:

That would be a part I think 2

or what you do in your action plan, to tind the root 3

cause of the problem with tne valve.

4 MR. BEARD:

Let's see.

I guess over on 5

tne attsched detailed action plan, tnere are two 6

steps.

First one dealing with tno disassembly 7

inspection and comparison to tha design information.

8 It saams to me that in the intent of retaining 9

documentation or providing documen ta tio n of the i

10 damago nere, I wantad to asK it it was your intent 11 to take photographs s ta r te d before and at stages 12 during the disassembly process?

13 MR. RAYNES:

Yes.

We already nave 14 contacted the photographer for that, and we have going to keep a log.

15 s

i 16 MR. RossI:

And you'll asve the broken 17 parts so that they can bo 18 MR. WOOD:

Further analyzed it need be.

19 MR. WIDBMAN:

J.T.,

I was down looking at 20 the investigative worn that was going on on AF God, 21 and wo did nava a photographer there.

In tne timo 22 that I was thare, which was approximately 45 minutes, 23 I think ha took approximately 10 to 15

()

24 MR BEARD:

40.

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MR. WIDEMAN:

No, not quito that many.

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2 Maybe 10 to 15 cifterent views or the setup ot the 3

troubleshooting.

And I wa sn' t there when they 4

initially came down, but I again, tnere was no 5

real damaga on that valva, so 6

MR. BEARD:

I was just coming from the 7

point of view that if my memory is correct, the 8

genersi guidelines ths.c we're working under had some 9

language in there that spoke to tho idea of taking 10 pnotographs and recording the as-found conditions 11 througn photographs.

And I didn't see that 1

12 mentionad in here.

And I w.s n t o d to make certain 13 that tha t's part of your plan.

We could have 14 avoided this entire question if there had oaan some 15 words here about photographs.

16 MR. WIDEMAN All right.

17 MR. BEARD:

The second part ot that 18 question on item No. 1 is really a detailad comment, 19 but it would seem to me that if I were the person 20 involved in this disassumbly, that I would want to 21 know which design and assembly information documents 22 that tne person who wrote this plan was referring to.

23 What did he have in mind, and how do I go about

(~')

24 carrying this thing out.

t-RUNPOLA & ASSOCIATES (614)445-8477 COMPUTURIZED TR ANScill PTION

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And I'd think you might want t0 consider 2

being a little bit more specific in tarms of what 3

you had in mind as best you can.

I undarstand you 4

said something about some more drawings aro coming.

5 But give the guy as much help as you can.

6 MR. RAYNES:

Okay.

7 MR. BEARD:

Don't be presumptuous that no 8

knows avorything that we know.

Tnosa are the only 9

comments that I nad.

10 MR. ROSSI:

Walt?

11 MR. ROGERS:

I guess I've got a couple.

12 wnst made this event different thsn any other time 13 you've had closure of the main steam isolation 14 valves and then going back and geing through your 15 norms 1 cooldown tha t would have caused the water 16 hammer.

Do you 511 hav9 any -- trom wnat you've if you've interviewed the 17 sean or what you'va 18 operators, talked to them, tind out if thoro was 19 anything dittarent in tne way they did business this 20 time than the other time?

21 MR. RAYNES:

In the interviews on Sunday, 22 thay said that they had gone by the procedures this 23 time.

And I asked if there's -sny way of going back

()

24 snd finding out whan the isst time they used that RUNFOLA & ASSOCIATES (614)445-0477 COMPUTERIZ8D TRANSCRIPTION

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1 and the last timo they did it.

And they said that

)

2 it would taka a while to find that, but we could go i

3 back and look.

I don't know what would make it i

4 different this tima, no.

5 MR. ROSSI Well, Walt brings up a good 6

point, because I think whan we talk about looking l

7 for root causes, that it's ons thing to fix the 8

valve and look at the broxen parts and conclude that I

9 tnst was caused by water hammer, but I'm not sure

[

10 that that's raally the root cause.

Tha t's just a t

11 step on ths -- tnst's something that nas to be done.

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12 And that may be the root cause for the

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13 valva problem, but you rus11y ought to be working t

14 back to the previous root cause, which is what r

15 caused the wster hammer on tnis particular event and 16 how do you mane sure that it doesn't occur sgsin.

17 And so we're talking about adding the drain valves, 18 adding the question of what happened with the 19 temperatures of the lines, and tnat.

And you really f

20 got to direct this thing, focus it to the real root 21 cause at why did you get a water hammer in the first t

22 place during this event that caused the valve dam 49e.

23 MR. BEARD:

I was just going to say in s

()

24 follow up to what r,rnis said, you could find out.

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mean, it's possible to find out that thero's a 2

procedural improvoment that would be appropriate.

3 And I think that in thu general tone of doing a 4

change analysis, which I understand you tolns had 5

presanted to us as your general approach, tnat the 6

proceduras involved hero may be very relevsnt.

7 MR. HIIDEuRANDT:

Two observations.

Ono, i

8 the time betore cooldown v i.i the turbino bypass was 9

accomplished is longer than generally encountured in 10 the plant.

That's an observation by the operators.

11 It was delayed by timo tanan to reestablish 12 cond-anser vacuum which is required for a cooldown i

13 via the turoins bypaassa.

14 Secondly, the specific conditions of the o

15 drains may be different, a hypothesis we've already 16 discussad.

And thirdly, the cooling tnat 3pparently 17 occurred on the one header might not have occurrod l

18 in the past.

We just don' t Know tnst.

Thst 19 i n t o r:n a tio n is not readily available.

l 20 MR. ROGERS:

Tha t's also what 18 to 21 intarusted in.

Have you all gone DacK to look at l

22 previous data to see it this asymmotric cooling was l

23 ta ken down or this one header dropped down botoro l

()

24 the other one or this is normal and the other haader RUNFOLA & AJSOCIATES (614)44S-B477 COMPUTERIZED TRANSCRIPTION

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21 1

actually being a little highar temperaturo is an ss 2

abnormal condition or some sort at waopiga or 3

somathing liko that, keeping that line hested up.

4 I guess I'm Kind or concerned about tnia 5

sbnormal temperature, asymmetric te mpe ra tu ra enst 6

you ssw in the headers in terms of where it camo 7

from in case it means one of your MSIVs or one of 8

tna

'3 MR. HILDEBRANDT That's a valid question

]

10 that will need to be answerud, yes, sir.

11 MR. ROGERS:

Was weeping some.

Onay.

12 MR. ROSSI:

Okay.

So you naad to get

(

13 those into your action plan.

I think this action

{

14 plan needs some turth9r work botore you implemtnt it 15 to direct it towards the real root cause as well as 16 the partial root cause of it.

I j

17 MR. BEARD:

In terms of we're looking back 18 st the experiance, I think tnere are several s

19 comments in thst area.

20 MR. WIDEMAN Ernie, are you saying then 21 that we need to, before wo -- we have to got run 22 this throu'Jh you again before we implement any work 7 23 MR. ROSSI No, I don't tool it has to be

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24 run Enrough us again.

I tnink wo've discussed ite RUNPOLA & ASSOCIATES (614)445-8477 COMPUTERIZED TRANSCRIPTIOt1

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22 i

i, 1

and we feel we've gotten your agreement that that i~

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2 will be dono.

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3 MR. WIDEMAN:

Okay.

l 4

MR. ROSSI:

And, you know, the. region is I

i going to be monitoring the work.

And we'll be 9

6 ultimately involved in the decision about whether

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7 you tound the root problem, so --

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MR. WIDEMAN:

Okay.

I just wanted j

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claritication.

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j 10 MR. ROSSI:

We do not want to have it coma 1

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11 back through us again.

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12 MR. BEARD:

I'd like to follow up i :

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13 something I mentioned earlier.

I think we ' ' o talked 14 all around it, so I might have skipped over in my

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15 initial comments.

On your'Page 3 where you liat l

16 your hypothesis, the No. I hypothesis said water i

17 hammer.

Okay.

Now, looxing forward to tne time l

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j 18 that you come back to us and any we've determined l

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l 19 the root cause, all right, would it be your intent

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20 that you would como back and say, okay, the root i

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21 cause is water hammer, or would you include in that i

22 explanation, it you would, a discussion or where the i

l 23 sourca of water was and what caused it to be a

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24 hammer?

I'm particularly interested in how you got 1

RUNFOLA & ASSOCIATBS (614)445-0477 COMPUTERIZ8D TRANSCRIPTION 4

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to water ham.nor.

2 MR. WOOD:

Yes.

3 MR. BEARD That would be your intent?

4 MR. WOOD We would be intsnding to

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5 describe not only that the valve was damaged by 6

water nammer, but an explanation as to where that 7

water hammer was.

And then it appropriate later, j

8 correctiva actions nouded to either prevent it or to 9

acropt it in soma fashion.

You Know, I'm not in a 10 position a t this time to say that we actually had L

11 water hammer for one thing.

12 MR. BEARD Right.

13 MR. WOOD:

And it may show it was not l

14 water hammer but.snother sound, for instance the 15 breaking of the valve itself that was heard.

So I 16 guess we've baon kind of rolling siong assuqing tnat 17 there is a water hammer out tnere.

And I tutak the la situation is sa such tnat you can't res11y go out i

l 19 and read an instrument thst says, yes, you had water 20 nsamer.

So it has yet to be provad avan thtt there 4

21 was a water hssmor.

i 22 HR. HEARD:

You do not have water hammer i

23 instrumentation.

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24 MR. WOOD Tha t's right.

Tha t's correct.

I RUNPOLA & ASSOCIATES (014)445-d477 COMPUTERIZED TRANSCRIPTION l

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1 MR. BEARD:

Could wo go ott the record for 7-V 2

a moment.

3 (Discussion ott the record.)

4 MR. ROSSI We're back on the record now.

5 And we had, while we were ott the record, a briet 6

discussion of the tact that what we've now learned 7

inout the reasons tor the daisgo to the turbine 8

bypass v.sive and what we included in our sequence or t

9 Svants is likely at well, nighly likely not to De 10 correct.

And we just want to stress the fict that 11 wo need to be told as promptly as possiolo of any C

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12 new information that's found during any ot the l

13 troubleshooting or analyses that attects tne basic 14 sequance of events that 15 MR. BEARD:

And the causas.

tha t's been issued.

And 10 MR. ROSSI 17 the licensus was given our Sequence of Events this i

la morning that was revised atter yesterday's meeting.

4 19 And so we would line to be intormed as quickly as 20 possible whon new things turn up that necessitato 21 modifying that.

I think tha t's probably enough on i

22 this.

23 MR. DEARD W111, the only thing I'd like

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24 to add, I'd line that idantification to De in an up-RUNPOLA & ASSOCIATES (614)445-0477 COMP,uTERtzED TRANSCRIPTION

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front, straignttorward way rather than be buried in 2

ML20129B706

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