ML20099L380

Intervenor Exhibit I-MOSBA-9A,consisting of Transcript Re Intervenor Exhibit 9 Tape 10,dtd 900323,TR 22-23

ML20099L380
Person / Time
Site:	Vogtle
Issue date:	10/06/1995
From:	AFFILIATION NOT ASSIGNED
To:
References
OLA-3-I-MOSB-9A, NUDOCS 9512280200
Download: ML20099L380 (6)

Text

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00CKETED USNRC 1

INT. EXH. 98 h

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'95 0CT 20 PS :09 TAPE 10 3

DATE: 3-23-90 4

5 0FFicf4ckfi64Uinfineering Conference Roost 6

00 Cit: !?..f 13rd Floor service Building 7

OCCASION: Event Critique Team Meeting 8

9 10 SEGMENT #1 11 TR. 22-23 12 13 14 BRINEY:

They vent anyway.

If they start coming up on 15 their setpoint, they start to vent.

Just reaching up there and 16 feeling them, they are blowing air.

When they actually trip, they 17 blow [CPC:(inaudible)] [NRC: ape], okay?

So if he just went up 18 there and felt the air, and it was just barely venting, you know 19 whether it was approaching its trip, or has reset, okay?

And if 30 you're trying to completely reset, to pinch it off.

These are the al worst temperature switches you've ever seen in your life.

They're 32 junk.

I don't know whether we need to advertise that or not, but 33 if you ever looked at the calibration process for these temperature 34 switches you'd say, "How the hell can we put this on something like 25 a diesel."

36 KOCHERY:

These CALCON switches have a lot of Part 21's 4

4 l

27 on

them, you know.

(Inaudible) switches (inaudible).

38 Unfortunately, none of them say -- lube oil presure switches is one 39 of them.

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SEGMENT #2 l

2 TR. 27-28 3

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4 FREDERICK:

Can I ask a question before we go ahead?

i 3

j 5

On the repeatability, once you do get it set, have we demonstrated h

6 in the past that it drifts from that setpoint?

i 7

BRINEY:

When you calibrate these things, you take three I

8 sets of data and [GPC:

take an average of the three)

[NRC:

i j

9 (inaudible)].

1

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FREDERICK:

Yes. But have we demonstrated in the past 10 11 that once we get this average value and we put it in service, that,',

[J L-t la it subsequently drifts way off from where [GPC: its set to]

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13 sets it]?

l 14 BRINEY:

It's difficult to tell.

No, I don't think that 15 we've gone out and tried to recalibrate [GPC: them again] [NRC:

16 (inaudible)].

I don't know how many sets of data [GPC: on it]

17

[NRC: unit] you would take.

18 HOLMES:

Typically do'we go back and recalibrate them?

19 Do they always require recalibration?

20 BRINEY:

Always require recalibration or replacement.

1 21 HOLMES:

Because they are off.

i 22 MOSBAUGH: Do you use this tapping procedure?

23 BRINEY:

Since the RER came back in "88",

I think we 24 (inaudible) we did, we've used that tapping procedure.

Prior to i

35 that, no, we did not because the vendor did not give us the 26 information.

Its hard to tell with them because they are such 27 junk.

2 1

9

+,

~ --

4 1

MOSBAUGH: In which direction does the switch tend to 2

behave if it was in normal service without the tapping procedure?

Do you understand the kind of question I'm asking?

3

+

BRINEY:

Yeah.

I understand, but I'm not sure whether i

4 4

5 I can -- I think [CPC: that the] [NRC: if that] possibility exists I

6 one could behave in either direction.

7 MOSBAUGH: Okay.

8

[ Inaudible conversation.]

9 HOLMES:

But the next time you go back and try to 1

10 calibrate these same sensors essentially every time that you go so 11 far as recalibration,

[GPC:

the cal is never sat (i.e.,

12 satisfactory)] [NRC: whenever the cal is in a relapse].

13 BRINEY:

Especially on jacket water.

Especially on a 14 jacket water.

We wind up replacing the switches quite often.

15

[GPC INSERT 16 HOLMES:

Jacket water pressure and temperature?

17 MOSBAUGH:

The CALCON switch is used on both?

4 18 NRC INSERT 19 VOICE:

Are CALCON switch is used on both?

20 VOICE:

I understood (inaudible) we've gone 21 through this.]

22 BRINEY:

There isn't a whole hell of a lot of data j

23 to go back and look at.

24 VOICE:

Right.

35 BRINEY:

Historically, we've always had problems 26 with jacket.

3

1 CASH:

How -- if we take these sensors out and we 2

take them to the shop, are they difficult to install and remove?

3 I mean, on that, can the calibration be messed up in the transit?

4 BRINEY:

You can say that about every calibration 5

that we do, Jimmy, but, you know --

6 CASH:

I'm just asking --

7 BRINEY:

When it comes to temperature switches, really the.best way to calibrate them is to remove the damn thing, 8

9 bring them back into the lab where you've got a controlled 10 environment to perform the calibration (inaudible) a pressure 11 switch or a transmitter or something like that.

12 i

i i

4

i 4

4 1

SEGMENT #2A (NRC INSERT) 3 TR. 33-34 3

4 HOLMES:

Has another RER been written since they (i.e.,

l 5

CALCON] gave us that revised procedure?

Has any other action been l

6 initiated to say, hey, we still have to solve it folks?

I 7

BRINEY:

I don't think so.

1 2

8 HOLMES:

Are we just going to live with it?

4 i

9 BRINEY:

Well, we get them to calibrate according to the 10 vendor's methodology.

Now, whether or not they're still reliable 11 switches after that, I don't know.

We [GPC: can] [NRC: can't]

12 comply with the vendor's procedure.

4 i

13 HOLMES:

I would think, based on the fact that they had i

14 failed after they had been calibrated several times, every time we 15 go back to recalibrate one, we have to recalibrate it or replace 16 it.

They are never sat.

They have a problem.

17 BRINEY:

We've had temperature switches straight out of 18 the warehouse that we have been unable to calibrate.

i 19 HOLMES:

We've got, it sounds like we've got a problem.

to me, if they're related in that they're on both 20 That's the

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21 diesels, then I think we need to try to draw a circle around this i

32 one and attack this issue seperately from the other one, okay.

I I

33 think we've got another issue now to address and that's the 24 temperature switches, d5 VOICE:

Do they show up in NPRDS in CESSAR?

26 VOICE:

Not in the portion I read.

37 VOICE:

Okay.

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l 1-3 SEGMENT #3 1

3 TR. 40-41 4

l 5

BRINEY:

Well, you're asking me to go back and calibrate 6

all the sensors again.

I just got through calibrating every single l

7 one of them.

8 VOICE:

That's right.

I 9

COURSEY:

Cal -- what do you' call it?

10 KOCHERY:

Calcon.

l i

11 COURSEY:

Calcon.

And you know they're going to be off

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13 anyway, right?

i 13 BRINEY:

Chances are.

Yeah.

i 14 KOCHERY:

And you put it back, and quickly (inaudible).

i 15

[ Simultaneous inaudible conversation.]

?

16 COURSEY:

About all he's saying, he's saying again is 17 that what he's got to calibrate is.a piece of garbage and he knows 18 they're all going to blow! (Inaudible.)

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