ML19208B181
| ML19208B181 | |
| Person / Time | |
|---|---|
| Site: | Crane  |
| Issue date: | 07/17/1979 |
| From: | Faust C, Marsh B, Scheimann F, Zewe W Metropolitan Edison Co, NRC Office of Inspection & Enforcement (IE Region III) |
| To: | |
| References | |
| TASK-TF, TASK-TMR NUDOCS 7909190195 | |
| Download: ML19208B181 (9) | |
Text
.
, 's l
UNITED STATES OF AMERICA NUCLEAR REGULATORY CCMMISSION f
I!
In the Matter of:
2:
IE TMI INVESTIGATION INTERVIEW 21 of Group Interview I
4.!
Mr. W. H. Zewe i
Mr. F. J. Scheimann, Jr.
Si Mr. C. C. Faust Mr. Frederick j
61 7i 8:
Trailer #203 9!
NRC Investigation Site TMI Nucisar Power Plant 10!
Middletown, P2nnsylvania ll!
Un arwn 12!
(Date of Interview) 131 Juiv 17. 1o70 (Date franscr1pr. Typea) 14:
32T 15i (Tape Numcer(s))
ISi 17:
i 18l 19i 20!
21; NRC PERSONNEL:
22!
Sob Marsh Darwin Hunter 23,:
88b3S4 24 25l 7909190/ib~
/
i l
MARSH:
Resuming at this time being 12:30.
This the third tape of this if interview.
Dorwin, you still had some final questions.
2' 31 We have a computer printout in the morning, 4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br /> and 4 minutes.
HUNTER:
g Now, this is right aftar the building isolation.
And the computer printout Si And then also, shows that somebody selected R-13 E tod percent withdrawal.
6 You the printout right after that says rod motor 3M temperature &larmed.
,k i
know, temperature indication. Those... the percent withdrawn with all g
rods on the bottom, leaves the question mark of why it was selected and Si The rod motor 3M temperature does some logic to that, because looked at.
10!
you had just logged close coolant water building isclation, and possibly Do either of you fellows the cooling water to control our draft system.
12!
remember looking at the rod motor temperatures, at about 8 o' clock or so?
13; 14i ZEWE: Which rod is that?
15; 16:
HUNTER:
3M.
17!
1Si ZEWE:
It isn't in the AB absorbent?
19!
'.t's a data... a data point recuested to look at apparently rod 20:
HUNTER:
motor temperatures 5 minutes or so, after the building isolation.
21:
22l t
23l You know what some of this might have been, the guy making an SCHEIPANN:
2 41 error putting the points into one.
25j S85355
~
j l
t t
2 l
l HUNTER: These two points are close together.
As far as their selection, lj 2j like 676 and 696.
31 Wouldn't you think the first one may have been an error, because there is 4;
only one digit difference..
7 versus a 9.
3 i
Si HUNTER:
But would you have some requested rod motor temperatures at that 7
time? After having a building isolation.
8 9!
1g; ZEWE: What time was this again?
l 11.
HUNTER:
It's 8:05.
Exactly the first building isolation.
131 FAUST:
I don't know why we would have, because... there are... because 14' probably the rods were already in the core.
16i HUNTER:
- 0. K.
What about rod temperature? Motor temperature?
ISl FAUST: Well, that's what I mean.
We had no intention of driving the rods, so I don't see why we would have selectad them.
21i HUNTER: Would that be an indication of reestablishment of closed coolant 22!
i water, or some type cooling system?
23!,
24l 25i SS335G
1 l
t 3
FAUST:
I don't know we didn't have any problem with...
1 1
2l 31 HUNTER:
You were not aware of that particular.
41 Si We would The rod motors would have been deenergized at that time anyhow.
i 6
have had no need to look at the temperature on them.
7j i
8; We HUNTER:
5d, le: me get to you, and give you your turn at this thing.
g
- C #*
- 5 ""
- ** **** ** Y "
10 And the intarview shows that a person, an operator, went to the morning.
core flood tank valve breakers, broke off the lock, locally closed the And this in l
breakers and reported to you that the breakers were closed.
13l fact was earlier in the morning.
Do you recall that particular event?
14!
Where somebody went A0... went specifically at your direction to the 15; Auxiliary Building and broke the locks off the core ficed tank motor operator breakers and closed the breakers locally ar.d reported to you that they were 17!
closed.
Do you recall that?
ISI 19i FREDERICK:
I think I remember sending somebody to close the breakers.
20' But, I don't remember telling him to break the locks on them.
21; HUNTER:
No... but do you recall sending somebody to close the breakers, 23i and having him call you back and say yes, they're closed?
i 24!
25i 385357
a, i
i l
4 i
If FREDERICK:
I don't remember him calling me back.
I remember wanting to 2:
have the breakers closed. That's about it.
3!
HUNTER:
Can you indicate just why you wanted them closed?
... Going back 41 Sj through the scenario a little bit, Ed, reactor coolant pressure has, in 6
fact, gone through its decreased ES, and, in fact, has decreased quite drastically. And steadied out at some point initially, at-ch-1,100 pounds.
gl After the high pressure injection had been initiated, reactor coolant pump g
secured, the pressure went down to the point where it would be questionable whether coolant flood tanks would have come in, at the low point at that 10 g
pressure. And the coolant flood tanks did not come in at that time.
It y
would appear that the coolant flood tank valves may have been manually
]
isolated at that time.
They may have not have been closed.
But do you recall that particular activity?
14,:
15, FREDERICK:
I do remember having somebocy going and make sure the breakers l
were closed.
But, I don't remember why or... and I did not operate the 17!
valve, but I remember leaving the guy close the breaker I don't 181 really rememcer why.
20:
FAUST:? I thought we were anticipating going onto Ke cooling down, that's 21; all it was done for. We didn't shut it. We didn't isolate the core flood.
22!
j It was just get the breakers closed as we anticipated going down on K heat.
23!
2 41 25i t
38b358
I i
5 j
1]
JACKSON:? But the pressure would have continued coming down.
h 600 - 700 pounds 3I FAUST:? When are you supposed to close those breakers
, I don' t 4:
remember...
g; Gi JACKSON:? 700 pounds, you close the breakers...
7f 81 ZEWE: You keep referring to the operator did this action early.
In what g
time frame are we really talking about now? Give me a half hour type 101 period.
11.
12:
HUNTER: Around 6 o' clock in the morning, plus or minus a half hour.
131 1M ZEWE:
I don't recall... the time I believe that Ed is referring to, which li, we discussed was whenever we were going to come down and go on the K heat.
16; There was some discussion whether we wanted to just D..., or the core flood valves, go in, as the pressure came down slowly, or to shut the valves and ISt come down in pressure and blow the core flood tanks in with more differential 19' pressure. That was the only time that I remember, and this was much later.
20i 21:
HUNTER:
You're speaking in terms of noon time.
22' 23; ZEWE:
Noon or so.
Right.
24!
2si SS3359
i 6
i lj HUNTER:
I didn't want to key on breaking the locks off.
The reason that
-r I keyed on that, because that man specifically remembers that, because he 2
3{
forgot his keys.
But they're break-away locks, and he said there was...
the way he said there was no reason why that didn't bother him--he just That's the way he 5l reached up and snapped them off and closed the breakers.
remembers that he aid it.
It was, you know, vivid in his mind.
6 7!
ZEWE: Was he dressed or anything?
. g, 91 HUNTER:
No.
It was before problems.
It was during the time that they were doing...
12!
FREDERICK: Were they doing this before? I did this on another tape.
For some reason I feel like we had just talked about cooling.down, a normal 14!
cooldown bit.
15 16:
HUNTER:
Early in the morning? Normal cooldown during that time?
17!
18l FREDERICK:
I don't know why I keep remembering that.
That's why I think 191 we were just gettirig ready, so then we depressuri::ed... you know, in other 20(
words, into cold down, to do that.
And it was just a consideration, w 21!
ended up never getting there.
22l 23i Hal?
i HUNTER:
Did you fellows end up with the normal cooldown procedure?
24!
did you consider a normal cooldown at that time?
25l S55360
I ZEWE:
I did not, no.
li I
2:
FREDERICK:
I thought it was just... somebody said, well, I don't know 3
what they said.
I just got the... for some reason I remember something 4
like tnat.
And that's about it.
All as I can remember it.
Gl ZEWE:? Because I guess it was short lived.
j I
81 HUNTER:
During that time period in the afternoon, and you were setting up g
l to depressurize the core flood, and let them come in.
Do you recall 10l having to open the core flood tank valves at that time? Or were they 11!
I already opened?
12:
13!
FREDERICK:
No, they were already opened.
To my knowledge, those valve had never got closed.
16i HUNTER:
You were, Fred... you were with Ed in that area?
lSt SCHEIMANN:
Yes, I was right in front of the pressurizer station, and I 191 don't remember ever having those valves shut.
201 21l i en if the breakers were closed?-
t HUNTER:
v 22j 23l r
SCHEIMANN:
Even if the breakers were closed, I do not recall those valves 24!'
were shut.
25i 8853G1
,.~
f
~
i 8
i s
HUNTER:
That's all my questions that I have.
2!
MARSH:
All right, the time is 12:45, we'll terminate the tape.
The 31 4l reading is 179 on the tape.
Si Si 7
8' 91 i
101 i
f i
i 14' 15; 16:
171 l
18r 19f 201 21!
22' 23i 24 25i i
6 SS5362 t