ML20082C112
| ML20082C112 | |
| Person / Time | |
|---|---|
| Site: | Vogtle  |
| Issue date: | 04/04/1995 |
| From: | Bockhold G GEORGIA POWER CO., SOUTHERN NUCLEAR OPERATING CO. |
| To: | |
| Shared Package | |
| ML20082B958 | List: |
| References | |
| 93-671-OLA-3, OLA-3, NUDOCS 9504060166 | |
| Download: ML20082C112 (60) | |
Text
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00RRESPONDENC5
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-DOCKETED USHRC-
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UNITED STATES OF AMERICA NUCLEAR REGULATORY COMMISSION
~ OFFICE OF SECRETARY DOCKEl!!;g & SERVICE BEFORE'THE ATOMIC SAFETY AND LICENSING BOARD gpANCH
]
In the Matter'of
- Docket Nos. 50-424-OLA GEORGIA POWER COMPANY, 31 Al.
50-425-OLA-3 Re: License Amendment.
(Vogtle Electric Generating Plant, :
(Transfer to Units 1 and 2)
Southern-Nuclear)
ASLBP NO. 93-671-OLA-3 SUPPLEMENTAL TESTIMONY OF -
- j
-GEORGE BOCKHOLD, JR.
ON DIESEL GENERATOR AIR QUALITY STATEMENTS h
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PDR ADOCK 05000424 T
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1 TESTIMONY OF' GEORGE BOCKHOLD, JR.
2 Q:
PLEASE STATE YOUR NAME FOR THE RECORD.
3 A:
My name is George Bockhold, Jr.
4 Q:
PLEASE STATE YOUR WORK
- POSITION, BUSINESS ADDRESS AND 5
QUALIFICATIONS.
6 A:
This information is included in my prefiled testimony 7_
concerning diesel generator reporting issues.
8 Q:
FOLLOWING THE MARCH 20, 1990 SITE AREA EMERGENCY, WHAT 9
DISCUSSIONS WITH NRC PERSONNEL DID YOU HAVE CONCERNING THE AIR 10 QUALITY OF THE DIESEL GENERATORS' INSTRUMENT AIR SYSTEM?
11 A:
Air quality, including the possibility of small debris or 12 moisture in the diesel air system, was discussed at a meeting 13 with the NRC Incident Inspection Team ("IIT") on March 28, 14 1990, which I attended.
That meeting was transcribed by the 15 NRC (IIT document #145) and a copy of the relevant portions of 16 that transcript is attached hereto as Exhibit C.
I believe 17 that transcript accurately reflects the discussion.
In i
18 response to a question from the IIT, I committed to review the 19 last historic dew point recorded for the 1A diesel prior to 20 March 20,1990, and, in addition, take new dew point readings.
21 Both the IIT and Georgia Power were attempting to identify the 22 cause of the 1A diesel spurious trips on March 20, 1990.
23 Between March 28 and April 3, as a follow up to the IIT 24
- request, Georgia Power tested the diesel air system for 25 moisture and conducted a review of the control air filters.
1
.On April 3,
1990, I participated in a telephone conference 2'
with IIT and Region II personnel.
A copy of an excerpt from 3
that transcript (IIT #257) is attached hereto as Exhibit D.
4 Although the speakers are not identified on the transcript
-5 prepared by the NRC, Exhibit D is hand-marked to indicate 6
those statements which I believe to be mine.
(A portion of 7
this conversation was tape recorded by Mr. Mosbaugh on Tape 8
No. 30, end of side A. )
I stated that, based upon tests 9
done, the air quality was satisfactory, and was not considered 10 to be the root cause of the 1A diesel trips on March 20, 1990.
11 By April 6,
I had received reports of higher than 12 expected dew points and I passed them on to the IIT and NRC 13 Region II personnel in a telephone conference which was 14 transcribed by the NRC (IIT #203).
A copy of the transcript 15 of portions of that conversation is attached hereto as Exhibit 16 E.
I believe that the transcript accurately reflects our 17 discussion.
The IIT team leader indicated that the IIT may 18 have been informed of the situation prior to the morning of 19 April 6.
I explained that on April 5 I learned that the dew 20 point test results on March 29 were unsatisfactory for the 1A 21 diesel.
I further stated that preliminary indications were 22 that the high readings were due to a bad dew point sensor 23 instrument.
As a precaution, a bleed and feed on the air 24 storage tanks was started to lower the air's dew point.
The 25 basis for my belief that the test instrumentation was suspect 26 included additional recent " bad" readings. Representatives of
- e l
}4 1
thefdiesel generator vendor (Cooper) had been contacted to 2'
verify Georgia Power's belief that ' any. immediate problem
- f
=3 associated with the. controls of the diesel did not call-into
-4 question the. operability of the engines.
A new dew point 5
instrument _or equivalent'was being sought on the morning of-6 April 6.
Egg Exhibit E at pp.
5-7.
'7 Q.
WHAT WERE THE ADDITIONAL RECENT BAD DEW POINT READINGS TO 8
WHICH YOU REFERRED IN YOUR LAST ANSWER?
9 A.
Those readings were among a series of' readings taken with 10 three different instruments which indicated that the dew 11 points of eight separate air systems were either out of 12 specification high or were physically impossible readings.
13 The series of readings were recorded by hand on a single sheet 14 of paper, a copy of which is attached hereto as Exhibit F.
My 15 Instrumentation & Control ("I&C") supervisor at the time, Mr.
16 Mark Briney, concluded'that those readings were the result of
'17 faulty instrumentation because the dew point readings.for all 18 eight air receivers were outside the acceptable range at the 19 same time.
I believed his conclusion was reasonable.
- .i i
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.s -
~
~1-Q.
WERE THE DEW POINT' READINGS' RECORDED ON-EXHIBIT F SHARED-WITH'
- 2 THE NRC AT THE TIME?
fu o 3
LA.-
Ye s '. : The Exhibit F readings were.provided;to NRC inspector 1
<4 Milt Hunt while he was on the Vogtle. site, prior to~ April 9, l
5:
1990.
i s
-6 Q.
WERE ADDITIONAL DEW POINT READINGS TAKEN-PRIOR TO APRIL 9,
'I 7
1990?
=8 A.
.Yes.
Dew point readings were taken on April 8, 1990, which.
9 indicated that all~ dew point readings were within 'the i
10' acceptable range (32
'F to'50 'F) except one, on the Unit 2A I
11 diesel which was 60.9
- F.
A copy of-a memorandum from Mike l
12 Duncan, IEC technician, to Mr. Charles Coursey, Maintenance 13 Superintendent, dated April 9,
- 1990, documenting those 14 readings, is attached hereto as Exhibit G.
15 Q.
WAS THE NRC INFORMED OF THE APRIL 8,.
1990 HIGH DEW POINT 16 READING.ON THE 2A DIESEL?
17 A.
Yes.
As indicated in the testimony of Mr. Lewis A. Ward, the 18 NRC IIT personnel were informed of this reading on April 9, i
19 1990.
i 1
20 Q.
WHAT DID GEORGIA POWER'S APRIL 9, 1990 LETTER TO NRC~ STATE 21 WITH RESPECT TO THE AIR QUALITY OF THE DIESEL GENERATOR
{
22 INSTRUMENT AIR SYSTEM?
i 23 A.
The letter stated the following:
t !
l
r 1-GPC has~ reviewed air quality of the D/G _ air system 2
including dewpoint control and has-concluded that air 3
quality is satisfactory.
Initial reports of higher than 4
expected dewpoints were later attributed to faulty 5.
instrumentation..
This was confirmed by internal 6
inspection of _one air receiver on April 6, 1990, periodic 7
replacement of the control air filters which showed no 8
indication of corrosion and daily air receiver blowdowns 9
with no significant water discharge.
10 S.gg McCoy Exhibit K (GPC Exh. 13).
11 Q.
WHAT WAS INTENDED BY THE STATEMENT IN THE APRIL 9 LETTER 12 QUOTED ABOVE?
13 A.
This statement was intended to discuss the current status of 14 the diesels' instrument air quality; it was not intended to i
15 describe all past maintenance issues.
The letter conveyed 16 Georgia Power's judgment on April 9,
1990, that the diesel i
17 control air quality relative to moisture or humidity was 18 satisfactory at that time.
The reference to " initial reports i
19 of higher than expected dew points" referred to those dew 20 point. readings recorded since the March 20, 1990 Site Area 21 Emergency, but was not intended to refer to any of the 22 readings taken after April 6, 1990, discussed previously.
23 The remainder of the statement was intended to say that 24 our conclusion that air quality is satisfactory is supported 25 by the fact that (1) we inspected an air receiver on April 6 26 and found no evidence of unsatisfactory air quality, (2) _ we 27 inspected air filters and found no evidence of unsatisfactory 28 air quality, and (3) daily air receiver blowdowns, which -
i h-1-
yielded no significant water discharge, did not indicate a 2
high humidity-environment in the system.
Q.
DID MR. MOSBAUGH EXPRESS A CONCERN TO YOU IN APRIL,1990 ABOUT THE DIESEL GENERATORS' INSTRUMENT AIR QUALITY?
I 5
A.
Yes.
On April 10, 1990, Mr. Mosbaugh provided me a note which-6 stated, on the basis of an April 10 memorandum from Georgia 7
Power engineer Tim Steele, that the diesels' dew point control 8
and air quality have not always been satisfactory.
A copy of 9
that note, with Mr. Steele's memorandum, is attached hereto as 10 Exhibit H.
Mr.
Steele's memorandum, for the most part, 11 discussed the maintenance history (prior to mid-1989) of 12 diesel air dryers.
The memorandum also noted that on March 9, 13 1990 and March 31, 1990, dew point measurements were high for 14 both air dryers of the Unit 1A diesel, but that it was strange 15 that both dryers would be high at the same time because they 16 were in separate systems.
Mr. Steele suggested that the 17 method of dew point measurement was suspect and might need 18 investigation. A table of dew point measurements for the Unit 19 1A diesel was attached to Mr. Steele's memorandum.
20 Q.
WHAT WERE THE READINGS THAT MR. STEELE REFERRED TO AS BEING 21 TAKEN ON MARCH 31, 1990?
22 A.
Those were the two readings (80 *F and 60 *F) which I told the 23 NRC about on April 6.
They were actually recorded on March 24 29, 1990.
Mr. Steele apparently referred to the wrong date,
e
't 1-written on the maintenance work order when he identified them 2
as March 31 readings.
3 Q.
DID YOU ADDRESS MR. MOSBAUGH'S CONCERN?
4 A.
Yes.
I addressed Mr. Mosbaugh's concern during an internal 5
meeting of Plant Vogtle personnel on the morning of April 11, 6
1990, which was taped by Mr. Mosbaugh (Tape 41).
A transcript 7
of that discussion is attached hereto as Exhibit I, which I 8
believe to be an accurate reflection of the Tape 41 9
discussion.
I questioned a number of engineers on my staff, 10 including Messrs. Ken Stokes, Paul Kochery, Paul Burwinkel, 11
.nd Tim Steele about the accuracy of the air quality statement 12
,n the April 9 letter.
I explained that the reference to 13
" initial reports" in the April 9 letter specifically referred 14 to the work order associated with instruments which were later 15 determined to be faulty.
I explained that the NRC had been 16.
told about the April 6 air receiver inspection, that air 17 filters were clean, that air receiver blowdowns showed no 18 significant water discharge, and that it was the opinion of 19 diesel vendor representatives that air quality at Vogtle was j
20 not a problem.
I asked everyone whether they believed that 21 the plant's experience during May 1988 to May 1989, when one 22 or more dryers may have been out of service, would affect the 23 air quality statement in the April 9 letter.
There was a 24 consensus among the engineers that the dew point acceptance 25 criteria of 50
- F had not always been met in the past, but
' t. o,
j i
f J1c that, based; on engineering.' judgment, they believed the. air j
1 2.
quality was~ acceptable.
This conclusion was.' based on the H
l
- 3:
factors discussed above as well as the expected thirty-degree'
.i dew point depression that occurs in the; system because the 4.
5-system pressure drops from'about 250 psi in the air receiver 6
to 60 psi in the air sensing lines.
At the i end ' of the l
'7 meeting, I told the participants that I would inform the IIT 8
personnel that the preventative maintenance program in 1988
]
9 was "not as good" as the current program but that, based on l
10 engineering judgment, we believed we had. satisfactory air j
.11.
quality.
)
I
-12 Q.
DID YOU HAVE FURTHER DISCUSSIONS WITH THE NRC ABOUT AIR 13 QUALITY?
14 A.
Yes..
On April 11,
- 1990, I participated in. a telephone 1
15 conference with NRC IIT personnel, which was transcribed by-
]
16 the NRC (IIT #233).
A portion of that transcript is attached 17 hereto as Exhibit J, which accurately. reflects the discussion 18 we had.
The IIT team leader, Mr. Chaffee acknowledged that he
)
19 received historic dew point information which Vogtle site 20 personnel had telecopied to him.
A copy of that information i
21 is attached hereto as Exhibit K.
During our discussion.with
-22 the IIT I informed the NRC that we could not obtain good,
'23 consistent data earlier than the data we sent them.that day 24 (Exhibit K).
Georgia Power's belief remained as it had been 25 on April 9 -- that the current air quality of the diesel was r2 k TtL 4
n y 1
satisfactory, although "during that period of time" in 1988,
-2 one.of-the air dryers was out of service for maintenance.
I 3
also explained that daily blowdown of air receivers helped
~4 assure freedom from moisture in the control system air and 5
that inspection of the control air filters at each overhaul 6
period indicated no rust or corrosion products. NRC personnel 7
were further informed that the April 6 inspection of one air 8
receiver showed slight corrosion around welds and a minor oil-9 film on the bottom of the receiver, none of which affected the 10 control air quality.
11 Q.
DID THE DATA THAT YOU PROVIDED TO THE NRC ON APRIL 11, 1990 12 INCLUDE THE OUT-OF-SPECIFICATION READINGS IDENTIFIED BY MR.
13 STEELE AS OCCURRING ON MARCH 9 AND MARCH 31, 19907 14 A.
Yes it did.
Sag Exhibit K, entry of March 31, 1990.
As 15 discussed above, this reading was actually taken and recorded 16 on March 29, 1990.
17 Q.
DID YOU BELIEVE THAT THE AIR QUALITY STATEMENTS IN THE APRIL 18 9,
1990 LETTER WERE COMPLETE AND ACCURATE?
19 A.
Yes, especially given the context of our on-going discussions 20 with NRC personnel at the time which are discussed above.
21 Q.
ARE YOU AWARE OF WATER EVER BEING FOUND IN THE DIESEL
-22 GENERATOR INSTRUMENT AIR LINES?
23 A.
No. l
f4 i
)
~
1-Q.
WHAT DO YOU BELIEVE TO BE THE'CAUSE OF THE MARCH.20, 1990
- 2 FAILURE OF THE 1A DIESEL GENERATOR?
j 3-A.
I believe the cause of the 1A diesel failure on March 20, 1990-4
~was primarily poor calibration techniques, as described in the 5
report of Wyle Laboratories, dated May 22, 1990.
(
r i
5 9
i
[f-l4 ( & *.'
GPC EXIIIBIT 49 BOCKilOLD EX. C OFFICIALTRANSCRFr OF PROCEEDINGS 1
i AgenCp U.S. NUCLEAR REGULATORY COMISSION Tide:
BRIEFING MEETING Docket No\\
IOCEON:
Waynesboro, Georgia 1-105 dam March 28, 1990 pAcn ANN RILEY& ASSOCIATES, LTD.
1612 K St. N.W. Suke 300 Mshitypon, D.C 20006 (202) 5 3 m 92 raoJEcr os3877
Page 1 U. S. NUCLEAR REGULATORY COMMISSION
)
)
BRIEFING MEETING
)
)
)
7aditorium Adcinistration Building Vogtle Electric Generating Plant Waynesboro, Georgia Wednesday, March 28, 1990 The briefing commenced at 10:26 a.m.
APPEARANCES:
On behalf of the Nuclear Reculatory Commission:
WILLIAM LAZARUS RICK KENDALL I
AL CHAFFEE GENE TRAGER MILTON HUNT On behalf of EPRI:
HARVEY WYCKOFF l
i l
92 PROJECT 063878
Page 2 PROCEEDINGS 1
2 MR. BOCKHOLD:
I'm George Bockhold, the General 3
Manager of Plant Vogtle.
l 4
A1, what we have proposed is the following agenda, 5
We have a couple of our instructors here and we'd like to spend 45 minutes or less and we'll try to move as quickly as 6
7 we can and it'll be up to your team to slow un down -- we 8
have the diesel engine and the sequencer overview.
Actually 9
we're going to swap this sequence because our instructors feel that it's better to do the sequencer overview and then 10 11 the diesel engine -- to go through it that way.
12 Go through a summary of outage activities, the test j
13 sequence that we proposed on the 1-A diesel in detail.
14 MR. CHAFFEE:
Yes, we'd be very interested in the --
15 as far as the instruction goes, on the trip circuitry and 16 what's involved in that.
And the test sequence, we'd also 17 be very interested in that.
We'd also be very interested in 18 a little bit of discussion of what activities have already 19 occurred on the 1-A diesel -- we'd be interested in what happened on the 1-A diesel since it was run just as part of 20 21 the event.
22 My name is Al Chaffee.
23 MR. BOCKHOLD:
We'll cover all that.
I think we'll 24 go ahead and start out first with Steve Wilkinson and then 25 Rick Brigdon.
Steve will do the sequencer overview.
l 92 PROXCT 063879
Page'95 1
look at. it as a group -- as those groups when they come in 2
the logic board, we'll vent that group of sensors off to 3
watch the diesel trip.
4 In this case we're looking at the smaller pieces, 5
here we're looking at the larger combination of the trips l
6 for an actual running diesel and watch the diesel trip.
7 MR. CHAFFEE:
So it sounds like you're satisfied 8
that this is a comprehensive test and if the problem is
)
9 still there -- that's a bad question -- this is as
)
10 comprehensive as you can make it.
11 MR. HOLMES:
Yes, we believe it is as comprehensive 12 a test as we can make it to try to identify the root cause 13 of the problem.
We'll be looking -- first of all we'll try 14 to recreate the situation, then we'll go and look at the 15 sensors, we'll look at the logic, we'll look at the lines, 16 we'll look at the integrated tests of starting and stopping 17 and tripping and then we'll go back and do another UV test 18 to see if we created another problem for ourselves.
19 I hope I don't have to come back up here and tell 20 you we found nothing.
21 MR. CHAFFEE:
As far as the air quality that's in 22 the pneumatics, is there any way to get a handle on whether 23 or not that contributed to this intermittent problem?
I 24 understand that you do tests to make sure it's not a 25 problem, but like was there a test taken on the air before 92 PRCUECT 063971
Pcgi 96 i
1-the event, has one been taken after the event, is there any_
2 difference in those?
Is there anything like that that can l
1 3
be done to try to determine if somehow you had a. fluke, some 4
debris or moisture or something that maybe was there at the j
5 time that is gone now and that's why -- you know what I'm
^
6 saying?
Il 7
MR. BURR We can probably get dew point readings.
l 8
MR. CHAFFEE:
I don't know when your last dew point l
i 9
was, I don't~know if it was --
10 MR. BOCKHOLD:
We'll go ahead and take the action to 11 go ahead and go to our logs and find out what the last dew i
12 point was, when it was and we'll take a dew point, we'll add
{
13 that into some parallel path in the testing modes.
We've j
14 got plenty of time to get a dew point.
15 MR. HOLMES:
You're also asking about air quality.
16 MR. CHAFFEE:
From what I can tell, it sounds like l
l 17 you're come up with about every test possible if the thing i
18 is there to find it.
So now the only thing I can think of 19 is how can you figure out if there's something intermittent.
20 The only thing I can think of that's intermittent is maybe 21 some sort of poor air quality or debris that caused one of 22 these sensors to act irregularly for a period of time and 23 then somehow in testing the diesel it's gone away.
So maybe 24 there's some way to go back and find out that maybe that was 25 the case.
But I don't know how to do that.
92 PROJECT 063972
' - * ~" ' -
yy-,-
1 Page 97 I
1 That's the only ' thing I can think of.
2 MR. BOCKHOLD:
We'll go look at it.
We can get out 3
the INPO guidelines on instrument air systems and see what 4
other kind of tests that we have been running on instrument
[
f 5
air systems or if we can come up with the same testing that l
6 we do for normal plant instrument air systems, we may be l
7 able to do it for a section of the diesel l
1 8
MR. KENDALL:
I think we'd like to know what test on i
9 the air system is routinely done for the diesel start 10 system.
11 MR. BOCKHOLD: We'll take that action, we'll go do
)
12 that and then we'll go run a battery of tests on the air i
i i
13 system for the diesel.
i 14 MR. KENDALL:
Ken, I have one more question.
On the j
15 logic board test and the sensor testing, is the extent of I
16 the testing that's going to be done on the A diesel j
i 17 generator now in this plan, is it essentially identical to 18 what was done during the 36 month inspection and testing?
I 19' MR. KOCHERY:
No.
20 MR. HOLMES:
I believe that the logic board testing I
21 would be very similar to what was done post-maintenance.
j 22 MR. KOCHERY:
If you look at the procedure we marked 23 there, you'll see some of them on the schedule.
The marked 24 up version of the procedure.
Basically all the trips will-25 be looked at.
92 PROKCT 063973 i
d T
'""W
'"1'-
11T DOCUMENT NO. 257 77-F GPC EXIHBIT 50 BOCKHOLD EX. D
(
OFFICIAL TRANSCRIPT OF PROCEEDINGS-i AgeDCy1 Nucl.ar R.gulatory Commission Tide:
u r 1 1.coor.r.ne.
Docket No.
k-mnm mg April 3, 1990 1 - 74 pgg ANN RILEY& ASSOCIATES, LTD.
i 1612 K se. N.W., suite 300 Washington, D.C 20006 (202) 295-3950
58 1
VOICE:
Yes.
I 2
VOICE:
Okay.
And that explains why, then, that 3
there's no problem with --
4 VOICE:
(Inaudible) pressure.
5 VOICE:
With the (inaudible) water pressure.
Was 6
it a (inaudible) low pressure or oil pressure low?
7 VOICE:
I can't be -- we got those additional 8
trips because of the way the' logic board's in the machine.
9 VOICE:
What were those additional trips?
10 VOICE:
Low turbine lube oil pressure and low 11 (inaudible) water pressure.
12 VOICE:
Okay.
So, therefore, then, low 13 (inaudible) water pressure and low lube oil pressure are not 14 suspect trips for the second trip of the diesel where you 15 end up focusing only on high (inaudible) water temperature.
16 Okay.
17 VOICE:
Right.
18 So as far as all these sensors that are r 19 currentlyinquarantine,theonesthatarehighpr.audibleF 20 water temperature are the ones of the most interest relative 21 to the event
&J 22 V
Yeah. But you've got a mixed bag of A. and 23 B diesel sw tches here, too. ----
/
24
-3n=
Right.
I under tand.
-r-)
e 25 We re in the process of bringing the B
59 1
t[esel bac)t t service and anything tha sus;;wct, if it
. a,i n b
JNijhi-atall,wereplaceditwithaneworie.
'2
- i. 5D 3
TEEY Okay. Just a second, George. 4 (Pause.) 5 VOI E: Is there Cooper there, also? 6 No, Cooper is not. 7 VOIC
- So Cooper is not on-site?
8 No. They've gone back. g 9 VOICE: Is Cooper -- are you going to use Cooper 10 to get involved in this test you're proposing for looking at r 11 the (inaudible) ycle water? 12 y We've talked to them about the theorv and 8 13 we'll collect data and counsel with them as necessary. 14 VOICE: George is now here from Region II. Which 15 sensors are remaining in the diesel? I'm looking for why do 16 you believe that it would be okay to place that diesel back 17 in service in its present condition? Are there any suspect 18 sensors re a ing installed? 19 There are no suspect sensors remaining at V 20 all in the diesel. 21 VOICE: How have you ruled out the possibility 22 that air quality, poor air quality may have caused the 23 problem? 24 (Inaudible) air quality both for normally 25 and when the team was here, they asked us to test the air ~
-6 60 1. quality and we tested it. 2 VOICE: Okay. That test includes oil, moisture 3 and (inaudib ?) [ p: That includes moisture and looking at the 4 5 filter. 6 VOICE: How often are those filters changed? 7 The overhaul period. 8 VoIC : Which is what? [ y: Eighteen months in our particular case. 9 10 VOICE: So they're changed out just before they 11 start the diesel back, when you start (inaudible) the 12 testing? 13 Well, you go ahead and you -- as part of 14 the tear-down, as part of that procedure, you change it out, 15 you pull it and you look and see if you've accumulated any 16 dirt and grime and stuff on that filter, and the filters 17 would come out very clean'. 18 VOICE: So you were confident, based upon tests 19 done, ; hat the quality of the air is now satisfactory and 20 you do not believe that was the root cause of the problem 21 before. 22 That is correct. 23 This is Al Chaffee. We have not yet 24 reviewed the data that the licensee has given on the air 25 quality.
7 A.J O #, U e 91 e ~ TIT DOCUMENT NO. 203 py .16)-p-(k ^- GPC EXIIIBIT 51 BOCKIIOLD EX. E OFFICIALTRANSCRIPT OF PROCEEDINGS Nuclear Regulatory Comission gg Tide: Telephone Conference:
- rir, Licensee, Region II (CLOSED)
Docket No. I Bethesda, Maryland mnm Friday, April 6, 1990 Pacts: 1 - 34
- DATg, M MW &. MIATES, I.TD.
1612 K St. N.W. Suite 300 Washington, D.C 20006 (202) 295-3950
1 1 UNITED STATES OF AMERICA 2 NUCLEAR REGULATORY COMMISSION 3 4 - - - - - - - - - - - - - - - -X 5 In the Matter of: 6 Telephone Conference:
- IIT, 7
Licensee, Region II 8 (CLOSED) 9 - - - - - - - - - - - - - - - -X 10 t 11 Nuclear Regulatory Commission 12 Operations Center l 13 7735 Old Georgetown Road 14' Bethesda, Maryland 15 Friday. April 6, 1990 16 17 The above-entitled matter commenced at 10:12 18 o' clock a.m., when were present: 19 20 Alfred Chaffee, Incident Investigation Team Leader 21 Ken Brockman, NRC Region II 22 Rick Kendall, NRC 23 George Bockhold, Vogtle 24 Lewis Ward, Vogtle 25 t i
M i 1 2 1 PROCEEDINGS 2 (10:12 a.m.) 3 MR. CHAFFEE: It's April 6th, at 10 o' clock. This l 4~ is of IIT Vogtle. 5 Now, what I want to do is talk about a little bit 6 about the diesel generator. I guess maybe the first thing 7 we should talk about is the following: 8 Rick has been trying to pull together, from all O the various information sources, what exactly the history is 10 in some of these sensors, and what he is finding is.that 11 there is a lot of -- in fact, Rick, why don't you begin the 12 talk? 13 MR. KENDALL: Okay. 14 What I have tried to do is take the different 15 sources of information that we had that discusses the 16 history of the sensors, and there are basically four sources 17 of information. 18 The first source are the notes from the blackboard 19 or dry board, whatever you call it, in the large conference 20 room, that Al wrote up during our meetings on the diesel. 21 The second source was the document that was given 22 to us, I guess, the day before we left. It was called 23 " Global Diesel Generator Sensor History: A Summary". And i 24 the first page of that had some information concerning 25 diesel reliability and some other stuff on it. m
4 when the work order was closed, in comparison to when the. 1 calibration itself was done. So,-I'm sure that caused some 2 And some of the other words there were the job 3 confusion. got changed and assigned to a different person for a period 4 of time, and he started to use different words. 5 So, why don't you telecopy what you want us to 6 We'll give it to Mark Briney, and Mark Briney will '7 fill in? fill that in and supply any information that way. 8 MR. KENDALL: Okay. That sounds great, and wo 9 realize it's going to take a couple of days, probably, to do 10 11 it. MR. BOCKHOLD: Okay? 12 MR. KENDALL: Fantastic. I 13 MR. CHAFFEE: Okay. Then let's go on to the 14 15 diesel generators themselves. Maybe the first thing we should do is talk about 16 this dew point situation and what you guys believe with 17 regard to that, and then I guess -- I thought we'd go in and 18 talk a little bit about what you found on the testing and 19 where you're going with the testing. 20 On the dew point situation, MR. BOCKHOLD: Okay. 21 yesterday afternoon it cano to my attention that on the 29th 22 of March we had run a test, and the test on the dew point 23 So, you know, we had some concern about 24 was unsatisfactory. why the test on the A Diesel was unsatisfactory on the 29th, i 25
5 1 and we're pulling in together a bunch of.information. f At this point -- and this is speculation on my 2 1 part -- the evidence is tending to point to a bad 3 'I instrument, a bad dow-point densor instrument, and we only J 4 5 have one onsite, and we're getting another one, and other 6 than that, you can speculate seven different dozen ways on 7 this thing, but that's what the evidence is starting to point to, because when we test air at similar conditions, it 8 9 all appears to be higher right now. Okay? And it's at a significantly different condition, 10 11 like our instrument air in the turbine building. The instrument does appear to work correctly, but at the diesel-12 1 13 temperature pressure dew point, the instrument may not be 14 working correctly. 15 MR. KENDALL: This is a test instrument. 16 MR. BOCKHOLD: So, basically, what happened is we got this informations put the jacket water test, basically, 17 18 on hold until we could determine what we had; and what wo did in the meantime is that the appropriate procedure that 19 20 the vendors and our experts tell us to use if you have a higher dew point in the diesel storage tanks is basically to 21 do a feed-and-bleed on the tank, and over a day or so, the 22 air will clean up to -- the dew point will clean up to the 23 24 required quality. 25 We started that. We checked the instrument lines
6 1 at'one of the low points on the A Diesel. We also checked 2 the receivir by blowing it down. We haven't really gotten The any real water out of the receiver in blowing it down. 3 comment was that we haven't seen any water coming out of the 4 bottom of the receiver, and there's a drain valve right'-- 1. 5 'l-6 there's a drain pipe right on the bottom. Further, the l i diesel system engineer blev one of the drain points down on 7 -- and this is the A Diesel -- on the control air system, 8 and he didn't see any moisture come out of that line. 6 9 10 And we've run some other tests. Like we ran one 11 test quickly on the B Diesel. That showed bad. We're off to run a test in a few minutes on one of Unit 2's diesels. 12 I expect that's going to show bad, because right at this i 13 point, what I believe is that the instrument is bad. 14 In parallel with this, we're going to buy -- we're 15 going to find another instrument, so we can do this. test 16 with a different instrument and see what that tells us. 17 In parallel with this, when the Cooper people get la in in the morning, which I guess is about 11 o' clock or so, 19 20 we'll give them a call. Given the indication that we have on the air and the dew point that this instrument is 21 reading, we believe we can probably.do the jacket-water test 22 without doing any damage to the control or instrument air 23 24 system. We believe that even at an elevated dew point, 25
.= 7 1 this is a long-term problem and not an immediate problem for 2 -- associated with the controls on the diesel. We believe 3 the diesels are operable right now, for example, and we 4 believe this is -- you wouldn't want to run like this for I l 5 months, if you had an elevated dew point. 6 So, we want to verify our belief with the Cooper 7 people. If we do verify our belief with the Cooper people, 8 we will go ahead and run the jacket-water test. 9 MR. CHAFFEE When do you expect to have the new 10 instrument onsite to do the dew point? 11 MR. BOCKHOLD: Don't know. Maintenance was off 12 this morning to go find one from one of our fossil plants or i 13 maybe even buy one in Augusta. 14 MR. CHAFFEE: Okay. 15 MR. BOCKHOLD: I'm not sure we can get exactly the 16 same instrument that we have. The one that we have has a 17 radioactive source in it, and you have to be, you know, 18 appropriately licensed to have this instrument. '19 So, we'll get something that's equivalent, but it 20 probably won't be exactly the same instrument. 21 MR. CHAFFEE: But you'll get one that meets 22 whatever the standards are for its readings being -- felt to 23 be correct, one that's calibrated and that's -- I don't know 24 if there's any industry standards in that area for that type 25 of test instrument or not.
l 1 You will ensure that your test instrument is 2 properly pedigreed. 3 MR. 80CKHOLD:.Yes. 4 MR. CHAFFEE: Okay. 5 Well, okay. I guess as far as doing the test 6 before you have satisfied yourself, through-a test, that the 7 dew point of the air is within spec or not, I guess you're 8 probably right that it wouldn't cause any damage to the 9 diesel. It obviously would be preferable that you get that 10 thing all resolved and clean up before you ran the diesel. 11 As far as that goes, George, I think what we'll do 12 is, after the call, Region II and we will talk about Cox a i 13 little bit and decide what our feelings are on that. I 14 understand where you're coming from. 15 MR. BOCKHOLD: We've basically put the test on 16 hold until we could resolve the issues with dew point. 17 okay? 18 Ar.d one of the parallel paths was that our i 19 engineers, our folks believe that the air quality that we 20 are actually seeing in the instrument controls and in the 21 receiver, even if the dew point was a little bit high, would 22 not be of concern for operability o'f the diesel engines, i 23 would not affect the control systems. We are verifying that 24 with Cooper. If Cooper agrees with those opinions, we'would 25 be prepared to go ahead and run the test.
9 1 In the meantime, in parallel, we are doing the 2 appropriate procedure with the air receiver and the air 3 dryer that if the dew point is not correct, we'll go ahead 4 and lower the dew point in the air tank. But we're not 5 seeing the dew point in the air tank getting any better. 6 So, we're starting to believe, more and more, we have a bad 7 instrument, and the instrument has somehow failed. 4 MR. CHAFFEE: I see. Okay. I understand. 9 (Pause.) 10 MR. CHAFFEE: George, Rick is going to talk to you i 11 a little bit at Catawba. 12 MR. KENDALL: It's our understanding that Catawba I 13 is the only other plant with TDI diesels that has a 14 refrigerant-type dryer, and there were some problems at 15 Catawba with their dew point and moisture affecting their 16 Calcon pressure switches, and we understand that you don't f 17 think you have a dow-point problem, and we understand that 18 you've also got a different model of pressure switch that 19 may not be subject to the same types of problems that they 20 had at Catawba. 21 However, when we go back and look at this thing, 22 one of the tests that was run was on jacket-water pressure 23 disconnecting the sense line, and the diesel tripped after 24 80 seconds, which was one of the timeframes during the 25 event, and just putting everything together, one of the
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_W'M N $ 3dy/ %6 GPC EXIIIBIT 53 BOCKIIOLD EX. G Interoffice Correspondence GeorgiaRnter k DATE: April 9, 1990 RE: Dewpoint Readings FROM: M. O. Duncan T0: C. t.. Coursey The following dewpoint readings are for Unit I and Unit 2 Diesel Generator Air Compressor. Samples were taken from air receiver tanks on 4/8/90. b Unit IA Diesel Generator 12403G400lK01 34.2*F 12403G400lkO2 33.2*F Unit IB Diesel Generator 12403G4002K01 44.S'T 12403G4002K02 36.6'F Unit 2A Diesel Generator 22403G400lK01 43.9'F 22403G400lK02 60.9'F Unit 28 Ofesel Generator 22403G4002K01 33.?'F 22403G4002K02 44.4*F Unit 2A Diesel Generator Air Receiver K02 is currently out of specification and is being continuously blown down. f// HDD/jbc h6dENDA' 5g. f W %#W /ad
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+s-re GPC EXHIBIT 55 BOCKHOLD EX. I 1 (TAPE 41,. SIDE 1:) 2 VOICE: Let's yet. started, please. 3 (Inaudible) containment and (inaudible). 4 VOICE: (Inaudible). 5 VOICE: All that's (inaudible) and 6 the (inaudible). 455 (inaudible). 7 VOICE:. Okay. Critical path S 8 remains (inaudible) and containment closecut. 9 (Inaudible) those four entries. 10 We've added some more water to the RWSP 11 yesterday evening and have been running the 12 (inaudible) tests. I don't have the exact 13 status, but (inaudible). 14 VOICE: (Inaudible). 15 VOICE: All right. 16 VOICE: (Inaudible). (Inaudible) the other 17 VOICE: 18 surveillances, I believe, we're all going 19 forward. 20 VOICE: Let's talk about that last 21 thing (inaudible). 22 VOICE: (Inaudible). 23 VOICE: (Inaudible). 24 VOICE: 14 (inaudible) is not yet 25 turned off, but will be as soon as EXHRT 4 I# P*Se / OF BZPAGE(S)
} 40 1 (inaudible)? 2 VOICE: 31ght a.m. 3 VOICE: (Inaudible). 4 h VOICE: .Whatever yesterday's mode 44e Amt 5 1 projection is (inaudible). 6 VOICE: But (inaudible) Saturday 7 night at eight o' clock. fe b VOICE: 8 We were showing three 9 o' clock Tuesday (inaudible) yesterday. I W4e$$AM o' clock Tuesday. 10 VOICE: Three F- " - " '- "- ' p' d f a /s o m 4 dlm t. 11 ' ' - - " d' *' -V ~ ' ^^-'-- 12 That's my projection. 13 VOICE: Mode 2 (inaudible). 14 'VCICE: Okay. (Inaudible) mode 4. 15 hI VOICE: (Inaudib . N"*" 16 VOICE: .Okay. (Inaudible) we 17 don't need to worry about (inaudible). 18 VOICE: (Inaudible) engineers 19 (inaudible). 20 VOICE: (Inaudible). 21 VOICE: I'm leaving, I just t 22 (inaudible). $h My Mik 23 hh VOICE: (Inaudible). .M me 24 VOICE: (Inaudible) read a h 25 paragraph. 'Ir..ufihl:) has reviewed air i
[GWX 41 1 quality of /Ad;&ediesel Jydfn th generator focusing on ilbe @w Me, ( ina udible gde wpoin t control d has 2 3 concluded that air quality is satisfactory. 1 4 Initial reports of hi her t)d y I4> Y Y 5 an 'l ( i = =ik le 4 . do a 5 expected dowpoints later = d i M a t. l 6 That specific was in reference 7 to the March 29, March 30, and March 31 work .i 8 order associated with the instruments that we 9 later determined w a bad, and we got to VC. JM kW I%>j7v :. k 10 (inaudible) er: .Lir and we figured out (inau$C S 11 how to work the dible) instrumentation. 12 This was confirmed by an internal & pts:rW 13 inspection of one (inaudible) on April 6, H4 14 1990. ( I r... d i b l e ) looked in there and found a i Afn 15 light (inrniblel of oil and a found some Mt S
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- 16 minor corrosion on.(inaudible) also. M /aff //.e MC 48 We periodically haced in a control 17 18 air filters were done in March, 1990.
From 19 all reports that I've heard on that is that 20 those air filters were always clean. Even in 21 the previous outage they were very clean and 22 practically brand new. 23 We showed no indication of corrosion 24 and air recei"tr and daily air receiver 25 (irandible) showed no indication of corrosion l l ~
c t 42 1 and daily. air receiver blow down with no 2 significant water discharge. 2 We believe, although schwartzwalder 4 is checking, is ever since we started up 5 we've been doing daily air receiver blowdowns 6 as part of operations. 4g Qq 7 Further, I guess, (1;;2f*-? when a the air quality can up, spoke to the cooper P" 9 people. And the (in e r f iLir) reaction (.y,osa j fr 10 ......t44) if you do these daily blowdowns, 11 and you don't have a air receiver full of -/Mor M 12 water, because of the (in;;fibi, marine i 13 engines and because you have a pressure 14 reduction going to the controls, you really ) i 15 don't have to worry about air quality. ) 16 The ed the word that was use I MMS >*vt &y u fh M y~(inavuaulw)j ( i n t e _ i -).jgutneb pl th td 17 you know, 1 y is That was the flavor that came to me, okay. 19 We've done I guess some additional i g 4~.y v$r 20 research. We have (inaudible) '88 time fyane-f (i n:f1 p*,bM*? 9e 21 -well, we had the .lible) progran eg4 $M 22 working outldnj the (inaudible) program ter-vb (inaudi(le). 23 24 The '88 time frame from like 5/10/88 25 to 5/2/89, somewhere in that time frame,
l j 1 43 1 approximately a year ago, the year before 2 that, we may have had one or more of the 3 dryers out of service for several months, I 4 okay, and that's indicated here. -l 5 We probably were not doing good PM's { 6 on chepkigg dryer quality at that particular i W i art'E%v i 7 W), okay. s I ,A guess +my question to the group is wars' t h a t h(-i n+.a i s i.-) t 9 the statement that we 10 made in our letter at all? 11 Is the other facts, the fact that bey 4R i 12 (inaudible) blow do,wn ] e air dryer, the fact un e -~ 13 that d e.. " ;.- ( i n a u d i b l e ) the air dryer, the 14 fact that essentially a year or approximately Aksha./I 15 a year before the sel instr &&(inaudibAe$) 4'you know, w I .t savkx /rasd /475 M' 1 *MW 4 w(he$tfnaudible)O 16 did have did n;t ^ u11 (insufikle) 1 d gN 17 et terent (it__diti;}, (gb Med>8"I VOICE: 18 44, 4 wf d bstion I-= /n o3* d t o ' g g[ The A 19 answer first, (inaudible), the (inaudible)austs UM 20 you know, the right way. (Inaudible) 21 seventeen, twelve, twenty-two, you have 22 (inaudible). 23
- Remember, (inaudible).
h VOICE: 24 That's theoretically not 25 possible.
~ 44 1 hj) VOICE: I mean, what we've got to E 2 basically say is our PM program before, I 3 don't know -- /d7 4 VOICE: June, July, '89; right? 5 69 VOICE: Yeah, somewhere -~ /vWhMIvoICE: (Inaudible) '89. s (hpr VOICE: Yeah, somewhere in that 7 8 time frame our PM program was suspect.
- Okay, 9
the readings were suspect. You know, that i 10 doesn't mean that you did have good air, but 11 it doesn't mean that you didn't have good air. 12 We don't know if we had good air or bad air, 13 okay. 14 But in the meantime ve did pull the l 15 filter, okay, and we had been doing the 16 blowdowns and all of that implies thAt $4e My bi> r*in't 9f To'nt 17 air, although it may not demonstrate j 18 "--"'-) the best quality, was 19 satisfactory. 20 k# 44Y VOICE: (Inaudiblehyoucan't/he rn;!ky 21 that we have a bad air and (4r;.J.,7.1-) ~. because 22 anytime you've got a minor corrosion, you can 23 see anytime (inaudible). (,]% VOICE: You know, I guess I would 24 25 tend to believe that we had good air based
45 1 upon two things; one, pulling the al ilter 6,. is 2 and inspecting it, which was (inaud bl ) new. sV il;45, 3 We didn't see any buildups of (inaudple). 4 The second thing I guess I would 5 tend to believe, yor know, two hundred and av 6 fifty pounds (inaudible) or thereabouts and 7 kind of room temperature, okay, and your 8 dryer (inaudible) an expansion process, even 9 if you didn't have a drye as through an 10 cxpansion process, the (lu-udiLl.) in my 11 opinion. M 12 You know, so some two hundred and 13 fifty pounds or two hundred and ten pounds 14 (inaudible) sixty p unds (inaudible) dry air. 15 So I would then conclude, if my 16 logic i co rect, I would conclude that g,gn het r w edt' es 17 (in ),apf-a ir q u a lity is still a valid 18 (inaudible). ~~ ' (Inaud ble) M ^* 19 VOICE: Cers jn? Yp4CE.: Yes. You know, 20 yor MS M*de st' Ih p 21 (inaudible) w= ^?v=- (incudibi-) this 22 generic letter and stated what our air 23 quality was. We dd
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fif ty deSr es Able d (in a us ible ) gre g+hi;w DA see R at --upr...-v (inaudible). 2 3 That's what we said our requirements are. 4 Dewpoint criteria wah i*e cik hi edJy>W establ 5 based on a design capability (inaudib1 ) and a 6 minimum diesel generator (i d8 M 7 So basically we sa th t our l e ) fe.LWYt' 8 criteria is fifty degreesW( nau 9 she+ w P W h f4efCh6 h VOICE: Yeahi X (inaudible). 9 [h VOICE : yk & loc.e%E & awd M e4 # NY**$ 10 Finaue~~ % e w - d.M';) A.s.a mo n s tr a t e it d 14.' em s n n 11 per ically. y question really focuses on
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$e) letter and how long -- you 12 this ( d 13 know, I believe from what I've heard from all 14 the experts that Item 4 here is still valid. 15 I mean, we believe that we've had 16 satisfactory quality air going to the control 17 system. 18 OICE: Yes, I think that because 4% (inaudible).A ///b 19 the 20 VOICE: Given the fact that you 21 have an expansion process in the dryer. M VOICE: Again, George, I say, you 22 23 know, it depends on what you're going to call 24 satisfactory. 25 If you're going to say satisfactory l
i i 1 47 1 is what we said in response to the generic 2 letter, I'm not sure that we can show that 3 we've met that criteria. 4 The problem is that you can't tell 5 what any of these numbers are because the way 6 the PN's done, you just can't tell. 7 You know, there's a number down 8 here, but there's no calculation. You're 9 doing the measurements at atmospheric 10 pressure, yet they need to be corrected back 11 to a system pressure, you know, and we're 12 getting high numbers. ggg k b VOICE (' t &"h..M,..<~_._*_. % a, s su 13 tannualsAu; 4. w._; nh h VOICE: We've made engineering 15 16 judgments, okay, on this particular statement. 17 I would go ahead and [M VOICE: You know, we're saying if 18 19 there's internal corrosion that we're 20 observing, therefore air quality is met and 21 that may or may not be the (inaadible). Tk s:, bree-s >1 d h'[VOJhE: 22 (Inaudible) you can see a.
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23 the 1 y4^) *4 bg D /,$ Ch.*.#eE.. / // / ' t. N*b p h VOICE: (Ir. edible) ybased on our a 24 25 judgment when we pull it down three times a
48 1 day and o erations says based on what we've i[ble)j*@rr M (vverMcor ha' ion, I)f (iIn 2
- seer, no we have to say
~ I" k b (in $d 3 b NMPTOICE: u i l e' 4 g 4) ht-*wdenis h. p(Inaudible) 5 fjCS? VOICE: recent 6 requests, George, for all these work' orders, 7 okay. They've asked for all these dih VOICE'ZTirm 8 I think at ten o' clock 9 I'll talk to (inaudible) about going back on 10 our past work orders in our PM program in '88 11 was not as good as our PM program has been in 12 the past year, basically, in '89 going to '90, 13 and we'll provide that information to our 14 engineering judgment that we had satisfactory 15 air quality. I think that's 16 h***b VOICE: . The expansion of air from 17 receiver pressure to eighty pounds is going to 18 result in about an eighty degree depression of 19 devpoint pardon me, thirty degree 20 depression at dowpoint. 21 VOICE: (Inaudible). 22 VOICE: Yeah. 23 VOICE: Yeah. 24 VOICE: So the receiver fN(3 VOICE: The absolute worst case 25
/1307.D/g42 .~ TIT _ DOCUMENT NO. 233 ~ ly-f GPC EXHIBIT 56 BOCKHOLD EX. J ( OFFICIALTRANSCRIPT OF PROCEEDINGS 4 Agency: sucl ar m.aulatory co..ission Tide: 11r 1 1.contor.oca with Licensee and Vogtle Docket No. mg Bethesda, Maryland dam Wednesday, April 11, 1990 1-8 p3c 3 ( . ANN RIW& ASSOCIATES, IE. 1612 K St. KW, Suite 300 Washington, D.C 20006 (202) 293-3950
t 1 -1 UNITED STATES OF AMERICA 2 NUCLEAR REGULATORY COMMISSION 3 i 1 4 - - - - - - - - - - - - - - - ~X 5 In the Matter of: t 6 IIT Teleconference with 7 Licensee and Vogtle J 3 .. _x 9 t 10 Nuclear Regulatory Commission i 11 Operations Center 12 7735 Old Georgetown Road 13 Bethesda, Maryland 14 Wednesday, April 11, 1990 15 16 The above-entitled matter commenced at 10:03 17 o' clock a.m., when were present: 18 19 Alfred Chaffee, IIT Team Leader 20 Rick Kendall, NRC 21 Ken Burr, Vogtle 22 George Bockhold, Vogtle i 23 John Aufdenkampe, Vogtle 24 t i 25
f ~ s 1-PR0CEEDINGS e i 2 (10:03 a.m.) 3 MR. AUFDENKAMPE: I think 12 videotapes that we 4' had to duplicate, but those were supposed to be done 5-yesterday and last night, the duplications, and those will 6 he Fed Ex'd, along with the other data that 'we have. ~~ 7 accumulate, tonight. So, you should have the videotape and 8 an additional box of data tomorrow morning. 9 MR. CHAFFEE: Okay. Great. 10 How about the diesel generator alarm and trip 11 setpoints? 12 MR. AUFDENKAMPE: It should be in the box f 13 tomorrow. 14 MR. CHAFFEE: So I guess we'll probably get the 15 box on Thursday? 16 MR. AUFDENKAMPE: Yes. You should have it 17 Thursday morning by 9 o' clock or so. i 18 MR. BOCKHOLD: Ten o' clock is when Federal Express 19 arrives. 20 MR. CHAFFEE: Okay. 21 We just got the dew point information on the air 22 receiver. That was handed to me about 10 minutes ago. 23 I guess the accumulator air pressure information - 24 - where does that stand? And by that I mean -- 25 MR. AUFDENKAMPE: I don't know that we understand \\
3 1 your question. I 2 MR. CHAFFEE: The question was the air pressures 3 that we observed to exist on the diesel start air system 4 during the event. 5 MR. AUFDENKAMPE: This is the conversation with r 6 the operators? i 7 MR. CHAFFEE: Yes. 8 MR. AUFDENKAMPE: We have that information, and we 9 were going to call Gene directly with that. 10 MR. CHAFFEE: Okay. Great. So, you'll probably 11 talk to him this morning? 12 MR. AUFDENKAMPE: Yes. I will make sure that you e 13 know he physically has the information. I will make sure 1 14 that happens before noon, A1. 15 MR. CHAFFEE: Okay. 16 Then the next question I had is -- you know, 17 yesterday we mentioned the fact that we saw something in a - 18 - I guess it was an outage schedule on the diesel, two l 19 items. One had to do with an entry that said that the 20 alarms will not come in on the 1-A diesel generator. That 21 was supposedly some work that was done on March 22nd. And I 22 was curious -- have you been able to find out what that was 23 all about? 24 ,MR. AUFDENKAMPE: I have not found anything on 25 that.
~. -A 4 1 Ken, do you want to talk about the thing on the '2 fuel rack, explain that? 3 MR. BURR: I thought you were going to talk to Ray 4 Howard. I did not talk to him yesterday. 5 MR. AUFDENKAMPE: Well, what you told me is what I 6 understand to be correct. I did not talk to Ray Howard 7 directly, but I understand that'to be correct, that all they 8 did was to take care of an interference. They cut off part 9 of the -- what's it' called, Ken, on the rack? 10 MR. BURR: Yes. It's the shaft that extends out. 11. It has no effect on the engine whatsoever. i 12 MR. KENDALL: Was this like something to keep I s' 13 somebody from stubbing their toe on it? 14 MR. BURR: I think it was. 15 Again, I should have talked to Ray Howard, and if 16 you don't mind, I'd like to do that. 17 MR. CHAFFEE: Okay. 18 We're still interested. We'd like to know what 19 those two activities were. We're trying to understand what i 20 they mean, particularly the entry about the alarms will not 21 come in on the 1-A diesel generator, because apparently that 22 work was done after the event, and we want to know if it 23 sheds any light on what happened in the event. 24 MR. BURR: You're seeing this in a work order, t 25 right? l
t 5 1 MR. CHAFFEE: No. 2 MR. KENDALL: Ken, what it is -- it's a big chart, 3 and it looks like -- across the top,.it's got rows, and the. 4 rows are-listed by the date, and it looks like it's for the 5 month of March. It goes from the let through the 31st. And 6 the columns down the side are all the stuff that you did on i 7 the diesel. So, it's a diesel outage planning chart or 8 something. I don't think it's a planning chart as much as 9 it is an actual chart of what nappened. And it's got blocks 10 in there for when certain tests were run and when the diesel 11 was started and what surveillances were performed, and it's 12 got a list -- it must have 60 or 70 entries in it. 13 MR. CHAFFEE: It's like a bar graph that goes 4 14 across, sort of like critical path, and it had all the 15 testing that was done up through the 31st in there. So, 16 apparently, that would tend to indicate that this entry on 17 the 22nd about alaras will not come in on the 1-A diesel i 18 generator is being some sort of work that was really done. 19 MR. KENDALL: Ken? Is Ken Burr there? 20 MR. BURR Yes, I'm here. 21 MR. KENDALL: If you give me your number, I can 22 give you a call back and give you a reference number or 23 whatever it is off the top we're talking about, so you can 24 see where it is we got the information. 25 MR. BURR: Okay. My number is area code 205-677- ~
y i 6-1 7836. 2 MR. KENDALL: Okay. I'll give you a call'when 3 this is finished. 4 MR. CHAFFEE: Okay. 5 MR. BOCKHOLD: Hey, A1, this is George Bockhold. 6 MR. CHAFFEE: Hi, George. 7 MR. BOCKHOLD: On one of your questions yesterday 8 and what we faxed up to you and you said you just received 9 on the air receiver dew point measurements -- 10 WR. CHAFFEE: Right. j 11 MR. BOCKHOLD: I really don't have good data prior 12 to the last date shown on that chart there, and we had been 13 working on our PM program, and we really don't have 14 consistant data earlier on on the~ diesel. We've looked at that, but that does not -- we believe, in fact, the air 15 16 quality of the diesel was basically satisfactory. 17 We did have one of the air dryers out for some 18 maintenance during that period of time, also, earlier on, in-19 '88, and that kind of stuff, but the key things about the 20 satisfactory quality of air is associated with the fact that i 21 the normal receiver is at roughly 250 pounds, and the air 22 pressure is reduced to 60 pounds. That reduces the dew 23 point about 30 degrees, and -- going to the control system. 24 So, given the fact that the room is heated and the roon pretty much stays at a constant temperature -- it will vary 25
7 1 sones it's not air conditioned -- and the fact that we blow i 2 down the receiver _ on, basically, a daily basis, even if the 3 air in the receivers was saturated with water, we'd get a 4 30-degree decrease in dew points for the control air, would 5 not be moist air. 6 Also, we, at each of the overall periods, have i 7 inspected the control air filters, and they have been 8 essentially like new. We didn't see any rusting or 9 corrosion products in those filters. And also, we inspected 10 the one air receiver, and we only saw a very light corrosion 11 around the wells and some minor oil in the botton, and none 12 of that really got to the control air. P 13 so, we think -- we believe we still have 14 satisfactory air ever since startup on these machines, but 15 our PM history is not as good in the '88 timeframe, because 16 we added some PM program at that particular point in time. 17 MR. CHAFFEE: Okay. 18 Okay. I understand. 19 okay. I understand, from talking to Warren, that 20 the discussion he had yesterday with several people at your 21 site was very helpful. 22 MR. AUFDENKAMPE: You have to pass on to Warren 23 that it was educational both ways. 24 MR. CHAFFEE: Okay. (- 25 MR. AUFDENKAMPE: But it was lengthy. i l
'k 8 1 MR. CHAFFEE: Yes. I guess you must have lasted, P 2 what, 2 or 3 hours, 4 hours? 3 MR. AUFDENKAMPE: I' sat in on about 3 hours of it, 4 at least 3 hours. 5 MR. CHAFFEE: Who is talking right now? Is that 6 John Aufdenkampe? 7 Okay. So, that takes care of documents. It 8 sounds like we're getting a package of stuff tomorrow. 9 Talked about the test program. 10 Anything else we have? 11 That's all the questions I have today. That was a 12 nice, short call. r 13 MR. AUFDENKAMPE: I guess we'll talk to you 14 tomorrow at 10:00. 15 MR. CHAFFEE: Right. 16 Thank you very much. 17 (Whereupon, at 10:14 a.m. the Interviey was 18 concluded.) 19 20 21 22 23 24 1 25
'l REPORTER'S CERTIFICATE This is to certify that the, attached proceed-ings before the United States Nuclear Regulatory Commission in the matter of: Teleconference NAME OF PROCEEDING: si DOCKET NUMBER: PLACR OF PROCEEDING: Bethesda, Maryland were held as herein appears, and that this is the original transcript thereof for the file of the United States Nuclear Regulatory Commission taken by me and thereaf ter reduced to typewriting by me or under the direction of the court report-ing company, and that the transcript is a true and accurata record of the foregoing proceedings. ik) 4L.- l.& P.ossie Sutton Official Reporter Ann Riley & Associates, Ltd. e t.
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~, A :<e :: a 5 :: : M =o1 GPC EXillBIT 57 BOCKilOLD EX. K UNIT 1 A TRAIN DIE 5EL GENERATOR AIR RfCt!VER DEW POINT EASUREENTS mfd N0,:, DATE RECEIVER E01 RECEIVER E02 19001651 4/8/90 34'F 33'T 19001513 3/31/90 80'T 60'F 19000899 3/12/90 44'F 45'F 3/9/90 61'F 66'F 19000465 2/11/90 37'F 37'F 18906'445 1/18/90 44'F 44*F 18906199 12/19/89 40'F 37'F ^ 18905007 11/20/89 40*F 41'r 18904442 10/20/89 38'F 45'F 18903652 9/27/89 45'F 45'F 18903214 8/24/89 37'F 35'F 18902798 7/30/89 45'T 49'F 18902453 6/28/89 48'F X02 was tagged out for natntenance 18900984 3/16/89 22.6'F 20.1*F _.}}