ML20136H262
| ML20136H262 | |
| Person / Time | |
|---|---|
| Site: | Three Mile Island  |
| Issue date: | 12/14/1984 |
| From: | Yeager W AFFILIATION NOT ASSIGNED |
| To: | |
| References | |
| SP-I-032-D, SP-I-32-D, NUDOCS 8508200243 | |
| Download: ML20136H262 (29) | |
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'S 1 UNITED STATES OF AMERICA 2 NUCLEAR REGULATORY COMMISSION 3 IN THE MATTER OF: : DOCKET NO. 50-289 METROPOLITAN EDISON COMPANY :
4 (THREE MILE ISLAND NUCLEAR : (RESTART-MANAGEMENT PHASE)
STATION, UNIT 1) :
5 6
DEPOSITION OF : WILLIAM A. YEAGER 7
TAKEN BY : TMIA 8
BEFORE : SHERRY BARNES, REPORTER 9 NOTARY PUBLIC 10 DATE : OCTOBER 10, 1984 11 PLACE : FRIENDS MEETING HOUSE 6TH AND HERR STREETS E HARRISBURG, PENNSYLVANIA
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14 APPEARANCES:
15 GOVERNMENT ACCOUNTABILITY PROJECT 16 BY: LYNNE BERNABEI, ESQUIRE FOR - TMIA
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17 BISHOP, LIBERMAN & COOK Q
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- ~ ~- O 'D-BY: JOHN F. WILSON, ESQUIRE Ti 9 18 FOR - LICENSEE, GPU NUCLEAR E;i; AUG 7 055b A WMING &
19 NUCLEAR BEGULATORY 30NElssagg . D J {^ ((E MNQi "
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.. I cannot recall.
2 Q Okay. After gathering together the test equipment, 3 what did you do?
4 A Well, Mr. Wright and myself proceeded down to the 5 ICSNNI room and we opened up tile relay cabinet where the incore 6 thermocouple detectors were connected t.o the computer, and we 7 started disconnecting the -- at random, the easiest connections 8 we could disconnect. The cables were wire wrapped and tied 9 wrapped very neatly, and we didn't want to go ripping those 10 all apart, so we took off the easiest ones we could, connected .
11 those to the thermocouple reader. Both of us checked to ensure E that they were connected properly and sta_ted making random
'r ~ D readings.
A.,
14 Q Now, who else was in or around this area at the time 15 you were --
16 A Initial starting, nobody except for myself and Mr.
17 Wright. About ten or 15 minutes into the time frame when we B started taking readings, Mr. Bennett showed up, who is the fore-B man of Unit 2, and he stood there and watched us taking some 30 of these readings. I know Mr. Gilbert showed up. I don't know 21 what time he showed up, and also Mr. Porter, <ho was the engin-22 eer for Unit 2 at that time.
23 Q Anyone else that you can remember?
21 A There was nobody else in that room except us, the
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25 five of us after a certain amount of time.
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, 19 j 1 Q Now, Mr. Bennett and Mr. Gilbert had been with you 2 in the STE office, is that right?
3 A They were in and out of the STE office, yes.
4 Q Okay, but they did not come with you to --
5 A Not initially. They showed up approximately ten min-6 utes after we got there, Mr. Bennett did. I can't remember 7 the time frame Mr. Gilbert came down.
8 Q When Mr'. Bennett arrived, did he indicate what he 9 had come, that is --
10 A No, not really. I had just assumed he came down to 11 watch and to see what was going on. Whether he was sent down, i E I don't know. We did use him, though, we wanted him to take, U to take the readings. We were in a situation there was no core i4 map available, so the thermocouple detectors we were taking off ,
15 we had no indication of their relevance to the core in the 16 location.
17 Q In other words, you would just know the wire of the B cable?
B A All we did was take the wire off the back and stuck 4
20 it on the reader and said, "This reads X amount of degrees."
21 We had no idea of physically what thermocouple we were looking 22 at with respect to the internal of the core.
23- Q Okay, so you engaged Mr. Bennett's help in determininc 24 that? .
25 A Mr. Bennett, wnat we did was, we recorded the pull ~
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, 20 1 slip numbers that were on the back of the thermocouple wires 2 where they connect into the computer. And at the same time, 3 we also recorded the temperatures. When Mr. Bennett recorded 4 the termperature and myself and Mr. Wright verified what Mr.
5 Bennett saw was actually what he saw. We did this with the 6 anticipation of later on determining with a core map, the rela-7 tive location of the detectors.
8 Q Now, before you started this procedure, did you take 9 some readings?
10 A Yes, Jim and I took maybe two or three readings before 11 Mr. Bennett showed up.
U Q And what were those readings?
U
} A We saw some that were relatively low, I would assume 14 within the vicinity of maybe 4 or 500 degrees, and I do recall 15 we saw one in the vicinity 2,000 degrees. That's -- I think we 16 took two or three readings before Mr. Bennett showed up, and 17 then we started, Jim and I kind of looked at ourselves and said-B "We'd better get this on paper."
B Q So you discussed after these two or three readings, 20 - the fact that you'd better record this in some form?
21 A We had no way of recording it. I didn't have a penci]
22 and paper and neither did Jim. All we had was equipment with 23 us, and we'needed somebody to record it, and Mr. Bennett was M a' candidate. .
25 Q Okay, so at that point, you determined you needed to A)%
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-1 record the data, what did you say or do?
2 A Mr. Bennett showed up. He had a pen and pencil, and 3 he started taking the data down.
4 And do you remember what kind of paper did he have?
Q 5 A I think it was just a little notebook.
6 -Q Notebook?
7 A yes.
8 Okay,-and then it sounds-like you then started record -
Q 9 ing the pull slip number'and verifying the temperatures that' i
M Mr. Bennt ' c had read, 'is that' correct?
11 A Yes.
U Q' So if I've got this right, hir. Bennett --'well, you; D- or Mr. Wright would call-out the pull slip number where the
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14 wire entered'into the computer?
15 A We'both did.
16 Q- .Both did, okay, and Mr. Bennett would actually read 17 the temperatures that.were recorded?
E .A. All three of us did. s =,s B Q All thre.e, and you would verify that what thegothers' 2D had read.was, in fact, accurate?
21 A Yes.
22 You were using a Fluke thermometer, is that-correct?
Q 23 A Iudon't'know what. manufacturer it was.
All'I know, 24 it was a thermocouple reader.-
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25
, -Q But'the readings were in' temperatures, is that correc;?
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, 22 1 A Yes, it was.
2 Q So it wasn't a millivoltmeter at this point?
3 A No, it wasn't a millivoltmeter at th - point.
4 Q Now, how many readings did you take in the manner 5 you've just described, Mr. Bennett writing down and the three 6 of you verifying the readings?
7 A I think maybe in the vicinity of five or six readings ,
8 Q If you can remember, what were those readings?
9 A We saw readings anywhere I think from the low of 10 approximately 200 to the point where the thermocouple reader 11 had off-ranged and started flashing, which to the best of my G knowledge, the type thermocouple that is located in the incore (j U detectors reads to 2,600 degrees. Manufacturer specifications 14 would indicate an over-range of plus ten percent on that device, 15 I would assume that that device would have started flashing at 16 approximately maybe 2,700 degrees, in that vicinity, or 2,800 17 degrees.
B Q If you can describe for us, the reader flashing, what B kind of instrument was it?
20 A It's a digital readout instrument. It reads directly 21 out in temperature, and it is designed to read the temperature 22 directly off the thermocouple. I can't remember if it is a 23 multiuse instrument for different type of thermocouples. I M believe it was. It's switchable to the type of thermocouple 25 u
you want to use. We had verified that we had it on the correct
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1 scale.
2 Q Oh, excuse me, what does that mean?
3 A You have a selection, there's Type A, Type B, Type J, 4 Type K thermocouples.
5 Q Is this a Type K?
6 A This one's a Type K thermocouple, yes, it was.
7 Q Okay, go ahead.
8 Q Okay, we verified that. What happens is, the Type K l 9 thermocouple -- and let me make absolutely sure -- will read 1
10 to a range of 2,500 degrees. Above 2,500 degrees, the device 11 will become non-linear and non-accurate. However, it will stil l i 1
u read'some temperature.
D What does'that mean, it becomes non-linear?
t 'r A 3'.
Q i4 A The device is -- without getting very technical, how 15 can I put that.
16 Q It does not, in fact, read degree-for-degree above 17 2,500?
E A No, it will not read degrt?.-for-degree above 2,500; B 2,500 is the top end temperature that this device can read.
20 We did have a flashing display on the thermocouple reader.
21 Q And was this attached -- where did you see this flash-22 ing display?
23 A On the front of the thermocouple reader, there is 24 a red digital readout that reads directly in degrees Fahrenheit, ,
25 If that display flashes, that indicates that the temperature
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-1 that'you are reading 'is greater than the acceptable limit of 2 .the device, the measuring instrument. .
3 Q Okay, so it will read a temperature, it will just 4
flash to indicate it's above?
5 A It.will just flash to indicate it's above, right.
6 Q Okay, so I think you said that there were some read-7 ings that were above 2,500, that is, were flashing?
8 A' Yes. Yes, there was.
l 9 Q You said, now' talking about the second, as you've 10 described it, set of-readings for the five or six readings, one
~11 was.a low of 200, something around'therer did you remember what M any of the others were?
(, D .A .We saw temperatures of 2,000, anywhere'within a range t
14 of I'think the low was 200 to on up to the point where the 5
machine, where the device would not indicate any more.
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16 Q Did it print out any number?
17 A I can't remember.
E Q .But it was certainly flashing above:-the designed B limit of the instrument?-
10 A of course, yes.
21 Q Were there any higher than 2,200 degrees?-
22- .A yes.
23 Q Do you know how-many? -
24 Af I can't.specifically recall'how many. .
25 I'm-talking'of the five or six.
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ao 1 A Of the five or six, I can't recall.
2 Q Now, was Mr. Porter present at any of the time you 3 were measuring either the first two or three or this later five 4 or six?
5 A Mr. Porter did walk in -- I can't remember exactly 6 when now -- and started basically watching us to see what we 7 were doing. Mr. Bennett was taking the readings, and I know 8 Mr. Bennett did, in fact, show these readings to Mr. Porter.
9 Q Did Mr. Porter indicate why he had to come to watch 10 the readings?
11 A No. I have no idea why he carae.
U Q 'Did he introduce himself or --
] U A Oh, I knew him.
I4 Q I mean at the time he entered the room, did he speak 15 to an"~ '?
16 I don't know whether he spoke to anybody. All I 17 know is that I turned around and there's Mr. Ivan Porter stand-B ing in front of me.
D Q Now, either at the time you took the two or three 2 readings or at the later time when Mr. Bennett started writing 21 down the five or six readings, did you have any discussion 22 about the readings themselves?
23 A Yes, we did.
24 Okay, and if you can, what was the discussion, the Q
25 best you can remember?
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.- 26 1 A When Jim and I started.seeing the temperature of 2 2,000 and 2,500 degrees, we looked at each other and Mr. Bennel.
3 was there at the time. My comment to Jim was that the core 4 is uncovered. I don't know who it was, one of the other three 5 gentlemen that was there, it would have been either Porter, 6 Bennett or Gilbert,-doubted our readings. I tend to believe-
.7 it-was Mr. Porter at the time. Our readings were doubted.
8 Jim and I discussed this and decided at that time.to ensure-9 accuracy, we would get a millivoltmeter and remeasure some of 10 these temperatures using a millivoltmeter and a conversion 11 chart such as I have here.
E Q And now, was this, if you remember, before or after 7'
.u D the five to six readings you just described?
14 A After.
B Q It was after that?
16 A Yes.
17 Q Was there any discussion ' at this time about possible B malfunctions of the thermocouples?
B A. There might have been discussion among the foremen 30 about it. Between Jim and myself, no. We were led to believe-21 that the_ procedure we were. going about very possibly we could
, 22 have had a bad piece of test equipmentnin the thermocouple :
23 reader or, yes, there possibly might have been-bad thermocouples 24 givirig us this indication. Jim and myself,did not.believe that.
25 We believed that.the temperatures we were seeing was actually
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27 1 true. Now, the reason for getting the millivoltmeter was to 2 corroborate our findingsaof the thermocouple reader.
3 Q And it was largely to answer the question that had 4 been raised by either Mr. Porter or someone else that perhaps 5 the readings were not reliable, is that correct?
6 A Right, right.
7' Q Now, if you know, was it apparent whether it was Mr.
8 Porter or someone else, to that person, that the additional 9 readings were being taken to satisfy his concern?
10 A I don ' t kisow. I know Mr. Bennett and Mr. Gilbert and 11 Mr. Wright and myself were all instrument people before, and u if we ran across a situation where we would have seen an erron-
} m eous reading or something that did not look correct to us, we'd 14 want to corroborate this with another piece of equipment.
5 Q You knew that from your experience working with them?
16 A Yes.
17 Q But you had never worked with Mr. Porter before?
E A No, I haven't worked -- I've worked with him'-- I can' t B say worked with him, I have worked for him on some problems 20 throughout the plant. As far as actual working with Mr. Porter, 21 getting into the screwdriver and tool bit, no,_Mr. Porter did Z2 not-do that.
D Q Okay, but it's fair to say that it was your experience ,
24 at'_least with Mr. Gilbert, Mr. Wright and Mr. Bennett, that if 25 there was some question raised about equipment or a reading, z.-
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1 you would attempt to corroborate that?
2 A Yes.
3 Q Now, after taking this five to six readings, what 4 happened then?
5 A The question came up as to whether the readings were 6 legitimate, whether we were taking them correctly or whether 7 the piece of equipment we were using to measure them was oper-8 ating properly. At that time, we nad decided to obtain a milli--
9 voltmeter and measure them with a millivoltmeter to corroborate 10 the findings with the thermocouple reader.
11 Q Okay, going back for a moment. When you say there E was discussion about a piece of equipment perhaps not operating
} 13 properly, can you remember any more specifies about the dis-14 cussion?
15 A I didn't believe the temperatures I was seeing, espe-16 cially the range of temperatures. They were, like I said, in 17 the 200 to 2,000-some-odd degrees. It was very well possible B that the thermocouple reader was malfunctioning.
B Q Okay now, I'm asking you a little different question.
20 I'm asking you what discussion was there at the time, if any?
21 A I guess the basic question came up between me and 22 Jim is: do you believe these readings, are these true, and 23 checked where I hooked the wires up to the thermocouple reader 34 to ensure I've got them hooked up correctly.
25 Q Anything of that nature?
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29 Il 1 A That was basically it. We had doublechecked from 2 the first two indications that we got that were relatively high 3 before anybody showed up. Jim and I right then and there 4 started to doublecheck to ensure that, number one, we were in 5 the right cabinet; number two, we had the right set of wires; 6' and, number three, they were-connected to the meter properly 7 and all the meter settings and everything was correct.
8 Q Okay, so you had basically doublechecked these early 9 high. readings, is that_ correct?
10 A Yes.
11 Q Doublechecked?
E 'A Yes. We didn't go back and read them-again. We U looked to make sure that we have, in fact, tight connections on
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14 the thermocouple reader because the wires had to be taken off 15 of the back of the NNI cabinet and installed on the thermocouple 16 reader, and we wanted to make sure that we did not have crossed 17 wires from one detector to another detector. So we did do B some checking on our own to verify that the way we terminated 19 the equipment on the thermocouple reader was correct, the scale 20' we.were using was correct, and basically the procedure.that we 21 were using was correct.
22 0 .Okay now,~at the time a question was. raised about lu whether the equipment was functioning properly and whether you 24 and Mr. Wright had taken the readings prop.erly, can you remember 25 any specifics-in that discussion, in other words, did you state s
l A;
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30 I perhaps to some of the people: "We've already doublechecked a 2 number of these matters," was there any specific conversation 3 you can remember?
4 A The only thing I can really recall is one of those 5 other three people requesting us to take off some more thermo-6 couples _and read them. I know the question came up as to our --
7 are you sure you're doing this right, are you sure the thermo-8 couple reader is reading correctly? My answer to that was:
1 9 -yes, we're doing it right; no, I'm not sur.?. it's reading cor-10 - rectly, I want to corroborate these 'eadings. r 1
d- 11
.Q What did you do then?
U A I think it was Mr. Gilbert left and went up to the ,
} - 13 Unit 2-instrument shop and obtained'a millivoltmeter for-us Jsj 14 and brought it down. We looked for a millivoltmeter in the 15 ISCNNI room, which there should be one there. The technician 16 had all of his equipment locked up and we couldn't_get in to 17 get it.
M Q So what did you do after Mr. Gilbert brought the-19 millivolt down?
20 A We went back through and we checked those detectors.
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21 that we had checked with the thermocouple reader to verify that 22 they were, in fact, reading what we had measured on the thermo-
'M couple reader.
24 Q Okay, and how many were those? ,
5 A All of them.
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, 31 1 Q So if I'm correct --
2 A We're talking maybe seven to nine of them.
3 Q Seven to nine?
4 A Yes, not very many of them.
5 .Q So it would essentially be the ones that were includec 6 within this first-two or three as well as any additional?
J 7 A They were included on the millivolt readings, yes.
8 Q What were the readings --
1 9 A I know for a fact'I saw a reading of approximately 10 75 millivolts.
11 Q Seventy-five?
! E A Yes.
T~ D Q Which would translate'into?
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14 A Approximately 3,500 degrees roughly.
15 Q Any others you remember?
16 A 4
We saw ranges from, I would'say, in the low 50's to 17 the upper SO's, which is in the 2,000 to 2,500' degree tempera-
, 2 tures. We also saw some that would.lbb in the normal reactor i
. B operating temperature of I think it was 650 degrees Fahrenheit.
2D Q Now, can you indicate how many were in any one of 21 these categories that you said there was one of 3,500, there 22 were.several in the range of 2,000 to 2,500, of course, talking 23 about millivolts,-is that correct?
- 24 A Yes. .
25 g ;And there were several in'the range of 650 degrees t
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2 A I don't know how many you'd say several, maybe one 3 of them was 650. There might have been three or four at 2,500.
4 There might have been one at 3,000, I don't know.
5 Q Now, were these readings recorded in any way?
6 A Mr. Bennett recorded them, yes.
7 Q How did he record them?
8 A He recorded them on pencil or on paper with a pencil.
9 I think it was Mr. Bennett cad .'r. Gilbert also had a book like 10 this which is the standard book that is handed out to TMI 11 employees when they go to Leeds and Northrup school for instruc-E tion.
'( ' D Q For the record, Mr. Yeager is referring to a Leeds 14 and Northrup temperature-EMF tables for thermocouples. Would 15 this contain a conversion table, is that correct?
16 A Yes, it is. '
It's a conversion table of different 17 types of thermocouples, referenced to zero degrees Centigrade, E in reference to 32 degrees Fahrenheit, their maximum and mini-B mum ranges and what millivolt reading you should see if you 2 were to measure at a certain temperature.
21 Q So Mr. Bennett was recording these reading on a piece
- ZZ of paper,.was he also at the same time making conversions using 2 this table?
24 A I believe it was Mr. Bennett and.Mr. Gilbert both l
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. 33 JD 1 with the thermocouple reader, went back with the millivoltmeter 2 to verify some of the readings that we had taken to make sure 3 that what we saw on that thermocouple reader was a true indi-4- cation.
5 Q And was Mr. Bennett also reading the input numbers?
6 A We would take the wires off, tell Mr. Bennett what 7 the wire pulls were, hook them up onto either the thermocouple 8 reader or the millivoltmeter, make a measurement. Mr. Bennett 9 verified these measurements along with myself and Mr. Wright.
10 I don't know I don't know what function Mr. Gilbert had in it.
11 whether Mr. Porter took notes as to any of the readings we got U or not. He was made aware that they were hot, but all of us, 13 the four of us that I know of excluding Mr. Porter, did, in
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14 fact, ensure that somewhere along the line, the information was 15 written down.
16 Q Okay now, Mr. Porter was present during the time the 17 seven to nine readings were taken?
E A Yes.
B Q Okay, and was he reviewing or otherwise observing M your work?
21 I guess he was observing. I was too interested in A
22 doing what we were doing. We had no idea of the locations we 23 were taking off, would pull a location off, measure the temper-M ature, look at each other and say: " Wow, 2,300 degrees, you 25 know, what's next?" We'd put it back on, go to another one, s
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1 take it off and say: " Gees, 1,700 degrees." As we were -- like 2 I said, as we were taking them off, Mr. Bennett was aware of 3 what we were taking off and what the temperatures were. It 4 would seem kind of illogical to me to go down there and start 5 measuring temperatures,without making a record of what you're 6 measuring.
7 Q But again, my question focuses somewhat on Mr. Porter .
8 To your knowledge, was he in a position to observe the work 9 you were doing?
10 A Yes, I assume he was standing there observing and 11 watching what we were doing.
U Q Okay now, did you call out the millivolt readings
} 13 such that he could hear them?
14 A This was a digital millivoltmeter and he was capable 15 of reading them himself. All of us verified that what rcading 16 we had was true.
17 Did you call out the reading as you made it?
Q B A Jim and I apparently talked about the readings as we B made it. It's not every day you see those kind of temperatures .
2D Q Do you remember Mr. Bennett having something called 21 a computer point identification book which indicated the loca-22 tion.:of the thermocouples in the core?
23 A I don't know whether he had that or not because if 24 he would have had that, we would have been able to determine 25 'directly where they were located. I think that the book that N.
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-e 35 1 you're discussing there also had a core memory or a core map 2 inside of it, and it would have given us some direction as to 3 where we were measuring temperatures. Because at the time, we 4 were just grabbing here, there and making temperature measure-5 ments to satisfy the requirements. We hcd no direction as to:
6 we want you to specifically measure this one, this one and 7 this one. So he might have had that information available.
8 If he did, I don't recall it being there.
9 Q At least it was not used in the readings you've 10 described thus far?
11 A No. We just ran them, we pulled them, wires, the U easiest ones there were to pull out because we weren't going 7'LJ. D to go cutting all the wire wrappings and getting really deeply I4 involved in the back of that cabinet.
15 Q So it's fair to say at least for the readings you 16 took on March 28th, you did not know of any use of a core map?
17 A Not that I know of, no.
M Q Now, did you have any discussion either during or 19 after you took these seven to nine readings?
20 A Just between Jim and myself about, " Wow,lpletty 21 warm, ain't it?" We tried to summarize basically what happened ,
22 what was going on.
1 Zl Q How did you do that, can you describe the conversatic a l i'
38 as best you remember? ,
25 A Well, sitting in the STE's office, we got bits and s
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pieces of information as to what happened at four a.m. in the 2
morning, what happened at 5:00 in the morning, who did what 3 to this. So summarizing what had happened, we at the time we 4
finished our incore measurements and went back upstairs and 5 sat down and were talking about it, pretty well had a handle 6
on what had happened that day.
7 Q Okay now, again focusing on your discussion either 8
ddring the time you're taking the incore, the seven to nine 9
readings or after that, what discussion do you remember either 10 between you and Mr. Wright or you and any of the other indi-11 viduals?
E A Most of the discussions were between me and Mr. Wright ..
'/ 'l 13 A .; Mr. Bennett was just observing, Mr. Gilbert was just observing 14 and I don't know what Mr. Porter was doing. He was there dur-15 ing the course of the measurements. The only thing that Jim 16 and I had mentioned was: " Wow, this one's hot," and both of us 17 concurred that the core was uncovered.
B Q Okay, and did you state that?
B A Oh, yes, we stated it directly to Mr. Porter and we 20 said -- Mr. Bennett also kind of heard it and I'm sure Mr.
21 Gilbert heard it, too, because I did not quite state it that way ,
E I used different terminology.
23 Q What was your terminology?
M A I said: " Christ, this thing's me.lting down."
25 s
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1 +he greater than 2,500-degree-range?
2 - A We knew -- well, let me clarify that. This is my 3 person opinion. I had felt that the core was uncovered from 4 the tempe tures that I read. After corroborating those tem-5- peratures, I s very sure that the core was uncovered. I 6 don't know what e feelings of the other people were. I know 7 Mr. Wright and myse talked about it being uncovered. That 8 is the only possible ex anation for reaching temperatures t 9 that high.
10 Q I-guess what I'm ask'ng you is what does that mean j 11 in terms of core damage, to you a that time?
E A To me at that time, seeing hose temperatures that p D high, of course I was there to perform o e specific function,
-i i4 that was to read temperatures. It is the C 's and the engi-15 neer's function to take those temperatures and se them to 16 the best of their knowledge. I didn't think of an kind of 17 hydrogen problem or anything of that at the nature. at we .
B had thought of was the . team bubble in the pressurizer ha l
B transferred itself over tc the reacter vesse1. ,
20 Q I'm asking you a different question. Reading the 21 temperatures that you read, what did that mean to you in terms
, 22 of core damage?
23 A Core damage had started or was in the process of 24 getting worse.
25 O Me", you etated that you affixed the thermecouple-3
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2 A es, it is.
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3 MS.-BER I: I have no other questions.-
4 CROS AMINATION 5 BY MR. WILSON:
6 Q Mr. Yeager, I would like~to ask you a uestions .-
7 A All righe 8 Q Ms. Bernabei'showed you a Porter' Exhibit 1, and asked l
9- you whether or'not'that'was the document that Mr. Bennett used
! 10 to record'the millivolt readings.
11 A Correct.
E2 Q . And I believe you indicated that you weren't certain
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13 that that, that document --
i4 A When we originally started the temperature readings, 15 Mr. Bennett's recordings were taken on a note pad he had in 16 his pccket. It is1very possible at a.later time in those reada l
17 .ings, that-chart may have-shown up. I don't know.
E Q Okay, so then when Ms. Bernabei characterized your B earlier testimony as it beir.g fair to say that you don't know 20 how that Porter Exhibit.1 was compiled, it would aiso be fair-21 to say that maybe it was compiled by;Mr. Bennett at the time 22 the thermocouple. readings were being taken?
23 MS. BERNAT.EI: ' Objection, no basis, no foundation.
24 .BY'MR. WILSON: .
25 . -Ql You may answer:the question.
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1 A If the handwritten temperat.ure indications on that 2 chart there are indicative of the amount of temperature mea-3 surements we took that day, to the best of my knowledge, that 4 chart has been falsified. Because we took no more than nine 5 or maybe 11 measurements at the most. That chart is indica-6 tive of approximately 50 measurements being taken. Now, if 7 those measurements were made, they were not made in my pres-8 ence. The time required to make those measurements by taking 9 the wires off - and all those measurements that are there 10 would have required us to undo the wire wrapping on the back 11 of the cabinets. And you are talking unscrewing the terminals, E putting them onto a millivol: meter or whatnot, reading and U putting'them back on again. And you're talking a couple hours
'(a^'t 14 worth of work. And we weren't down there for any longer than 15 30 minutes, maybe 40 minutes at the most.
16 Then-in-erdar *e eca 6ha = i l l i'ra1 +- reeder, 'reu ac+ '-
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17' ally d to do a disconnect and reconnect as opposed to a wire B probe?
B A You coul onnect the millivoltmeter onto the actual 20 terminations that were in ck of the NNI cabinets. I believe 21 Mr. Wright and myself had some t inations off already from 22 when we did the Type K thermocouple rea e , and we had used 23 the millivoltmeter to measure those already.
34 .Q Mr. Yeager, do you know whether.or not the core 25 t h n e m n ta nti n l o g nrn entm i rnd Fnr e- h n nngg @ n.gf ehg f i c [ 1 [ +- sj ,_
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- . ' . 77 1 c A At that ti=c, nc, I did not. At-th ic t ime , a f te r 2 revi ing past testimony, it is my understanding that they were 3 not an i egral part of the TMI Unit 2 system.
4 Q If . ey were not an integral part of that system, 5 would that have r. utred entry of the readings taken off of 6 them?
7 A They reported in the computer. Whether the read-8 ings.were for aesthetic purpose I don't know.
9 Q Apart from a computer ent ,~ if recordings such as 10 you took manually, would they be requir to be entered any-11 place?
U A I don' t know.
.( ;- D MR. WILSON: That's all the questions I hav i4 REDIRECT EXAMINATION 15 DY MC. SEnt:AccI; 16 Q You stated that you took no more than nine readings, 17 is that correct?
E A To the best of my knowledge, nine, maybe 11 at the B most.
The amount of time we were down there was 30 minutes.
20 And in that time frame, to do what we did there, maybe nine, 21 maybe 11 at the most. I can't remembe'r exactly. There's no Z!
way we took as many readings as is listed on that chart.
23 Q But if I represent that it has been, I think Mr. Porter 24 has. stated this Porter Exhibit 1 indicates.around 51 readings, 25 you stated that would take several hours, in your. opinion?
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78 1 A In my opinion, yes, to do those readings properly.
2 Q And why is it, can you describe the process by which 3 you would take the readings?
4 A The way we were taking the readings originally was 5 to take the leads directly of f of the terminations in the back 6 of the cabinet, place those leads onto the Type K thermocouple 7 reader or onto the volt, millivoltmeter. The time involved 8 to take one reading was approximately maybe three or four 9 minutes, whatever time it takes to unscrew two screws and con-10 nect the device up.
11 We were there no longer than 30 minutes, maybe 35 m at the most before we departed there. Now, we did, in fact, 13 leave the device down there, measuring device that is, and to 14 the best of my knowledge, it was the thermocouple reader. We 15 left that physically there for someone else's use.
16 Q It's also true, is it not, that you at no time during 17 the time you were taking the readings, saw a core map being 18 used?
19 A No. We had requested one so that we could have an 20 idea as to where they were located. It was doing us no good 21 taking these random readings and seeing these temperatures 22 unless we knew where they were to get an idea of a fixed loca-a tion.
M Q Okay, but to your memory or current knowledge, at 25 no time during the taking of the readings did you receive this l
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1 core map?
2 A. No, not to my knowledge, I d idn' t. I didn't see it.
3 Q And you don't remember anything which Mr. Bennett 4 has ca))ed a computer point identificatton book?
5 A It may have been there, I don't recall it.
6 Q And at the time.Mr. Bennett was writing down the 7 readings, you don't remember him specifically correlating each 8 reading with a point in the core?
9 A No.
10 0 You don't remember him doing that kind of computa-11 tion or correlatica?
U2 A No, I don't.
} ~~'.; D Q And to your knowledge, d.td anyone else -- again, n.-
14 during the time you were taking the readings -- do that kind 15 of correlation?
16 A Not to my knowledge, no.
17 Q Are you familiar with something called a reading book 18 which is on the computer console in the control room, I'm asking B either unit now since --
20 A I have probably seen it. I don't recall what it is 21 any more.
22 Q I can state that Mr. Bennett stated in prior testi-23 many, that he wrote up a complete set of . thermocouple readings 24 in a reading book for the computer console, that doesn't --
25 A No.
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- . .... , 80 1 Q -- recall to you any particular log?
2 A No,-I don't.
3 Q Just.to make sure I understand, will you view Porter 4 : Exhibit 1 for a moment. To compile Porter Exhibit 1, one would l
5 need to take, assuming there's around 51 readings, approximate 1 /
6 42 or so additional. readings to the ones you took, is that 7 correct?
8 A To the best of my knowledge, yes.
9 Q It would also involve correlation of those readings 10 with a particular point in the core, is that correct?
11 A Yes. Eventually these, these locations, line number U or reference number, are going to correlate somewhere along
}({'; D the line as to where those incore detectors are located.
14 Q And it would additionally -- assuming you were using 5 a millivoltmeter -- would also require a conversion into tem-16 peratures, is that correct?
17 A Yes, it would.
M Q Now, at the time you were making your readings, you B recorded them in millivolts, is that right?
20 A Yes, we did.
21 Q Did you at-that time or did Mr. Bennett also put down 22 a temperature reading next to the millivolt reading? -
23 A -I took no physical readings at all on pencil and M paper.- .
25 Q No, I understand that, I'm talking about Mr. Bennett.
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gj 1 A I have no idea what Mr. Bennett was marking down.
2 We just grabbed wires, disconnected and said: "It reads such 3 and such," and he marked them down, I assume he did all of them .
4 5 Q Okay now, you satd -- did he have a conversion table,-
6 to your knowledge?
7 A You mean one of these conversion Type K? It wasn't 8 there inttially when we started, it was there after we started.
9 Q Do you remember at or near the time you were doing 10 the readtngs, actually converting the millivolt readings to 11 temperatures?
U A Someone may have been dotng that, it wasn't me.
{]} 13 Q Okay, and you don't have any knowledge whether Mr.
14 Bennett was dotng that?
15 A It might have been Mr. Bennett, I don't know.
16 Do you know that tt was done?
Q 17 A I know one of these tables was there when we were B taking mtllivolt readings, so I would assume that someone along B the line has taken the conversion.
20 Q Okay, no, my question to you was: at that time, do 21 -
you now know of anyone that was taktng, doing the conversion 22 from your mtlltvolt readings to temperatures?
m A Any spectfic one indtvidual, no. Outside of myself, 31 I can't name any spectf ic individual that actually sat down 15 and said, "This specific milltvolt corresponds to thts
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2 Q Did you actually see any data in which that conver-3 sion was made?
4 A No. All I know is this book was used and it was 5 open.
6 Q So it's fair to say you don't know whether or not 7 that conversion was done at the time the readings were taken?
8 A The conversion had to be done at the time the read-9 ings were taken because we could not tell that a reading of 10 . 52 millivolts corresponded to 2,500 degrees, and we wanted to 11 corroborate our findings that we took with the Type K thermo-12 couple reader. The only way that you can do that is by having 7~1 13 a mil 1ivalt temperature conversion table.
nJ 14 Q Okay, so although you can't remember the particular 15 individual and you did not see the conversion, you know that 16 they were, in fact, converted at that time?
17 A They were, in fact, coverted, yes, they were.
18 -
RECROSS-EXAMIFATIOF 19 BY MR. WILSON:
20 Q W u ik about conversions being made of the 21 millivolt readings perpture --
22 A Yes.
23 Q When you use that word conversion, es that mean 24 a mental process and perhaps then vocalize,d as opposed 25 being reduced-te eriting? - - - -
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