ML17208A665
| ML17208A665 | |
| Person / Time | |
|---|---|
| Site: | Saint Lucie  |
| Issue date: | 05/02/1980 |
| From: | Liebler G FLORIDA POWER & LIGHT CO. |
| To: | |
| Shared Package | |
| ML17208A663 | List: |
| References | |
| NUDOCS 8005290159 | |
| Download: ML17208A665 (19) | |
Text
UNITED STATES OF AMERICA NUCLEAR REGULATORY COMMISSION BEFORE THE ATOMIC SAFETY AND LICENSING APPEAL BOARD In the Matter of FLORIDA POWER 5 LIGHT COMPANY (St. Lucie Nuclear Power Plant, Unit No. 2)
Docket No. 50-389 AFFIDAVIT OF GEORGE E.
LIEBLER I am George E. Liebler.
I hold the position of Manager, Power Resources, Nuclear Services within the Florida Power
& Light Company.
In
.'this capacity I have previously testified in this proceeding.
My educational and professional qualifications are already part of the record (Fol. Tr. 404) and are incorporated herein by reference.
In my Affidavit of March 14, 1980, I provided-information which the Appeal Board had requested concerning the performance of diesel generator units at St. Lucie l.
(Tr. 867, 879-85.)
I also noted there that "using the existing data, a more accurate appraisal of diesel generator performance under emergency conditions can be achieved by eliminating unsuccessful start attempts that occurred during maintenance and troubleshooting, or that can definitely be attributed to spurious operation of a trip that is bypassed in the emergency mode, to a malfunction of equipment that is not operative in in the emergency operating mode or is not part of the present diesel generator uni t design, and to operating conditions which would not be present in an 800529u
) Q g
0 emergency, e.g.,
a diesel generator output bus already energized by offsite power.
(See also Reg.
Guide 1.108, Rev.
1, PIC.2.e(2), C.2.e(7).)
Applying this guideline, the diesel generator units failed to operate a total of 10 times."
(Affidavit, p.2.)
By its order of April 16, 1980, the Board requested the applicant to furnish it the number of such eliminated attempts together with any additional'explanatory material it wished to provide.
That information is cont'ained in this Affidavit.
Upon review of'll start attempts, a total of twenty-three (23) instances are noted in which the diesel generator sets failed to operate according to design but which were not considered valid failures. 'ach such event is now identified with an "X" in the Fail Column on Attachment A
submitted with my Affidavit of March 14, 1980 and resubmitted with this Affidavit as Attachment A (Revised 4/28/80).
These attempts are listed below by type, with a further explanation of the reason why each vtas not considered a valid failure.
Reverse Current Tri s Number of Occurrences - 3 Reason for not counting as a failure:
This trip can only occur if'he D.G; is operating in parallel with another generator and the D.G. output is low enough to allow the other generator to motorize the D.G.
This situation is impossible under emergency operation since the bus is deenergized and all loads on the D.G. bus are, shed prior to output breaker closure.
Because the D.G. is brought onto a dead bus in automatic
operation, there can be no reverse current problem.
Failure To S nchronize lilith A Loaded Bus Number of Occurrences
- I Reason for not counting as a failure:
As stated
- above, the D.G.
bus is deenergized and automatically unloaded prior to closing the D.G.
output breaker under emergency conditions.
For that reason, failure to synchronize with a loaded bus does not indicate an inability to perform the emergency task.
Successful Start And Loadin
- Low Out ut Number of Occurrences 1
Reason for not counting as a failure During a test of "A" D;-G., the unit failed to pick up design load; however, load was assumed in excess of the safeguards load.
At no time during the test was the D.G. 'unable to carry out its emergency function of supplying'safeguards power.
Trouble-Shootin
/Maintenance Number of Occurrences
- 16 Reason for not counting as a failure:
This type of start attempt occurs in two instances:
(I)
A component that has undergone maintenance is tested to assure that the work was done properly and the system has been returned'o its operational configuration.
A failure
0 during these start attempts should not be counted since their sole purpose is to identify problems prior to returning the D.G. to.service.
(2)
A component that has failed to function properly must be diagnosed to identify the source of difficulty.
In many situations the best method of identifying the source
'is to start the machine and observe its response.
A failure during such diagnosis is to be expected since the purpose is to identify a failure that is known to exist.
Turbochar er Breakdown Number of Occurrences
- 2 Reason for not counting as a failure:
As a result of a design deficiency in the lube oil system for the D.G.s, oil flow was interrupted during startup.
Investigation revealed that the electric "soap-back" pumps were turning off before the mechanically driven lube oil pumps were supplying oil. to the turbocharger bearings.
The result was bearing failure due to insufficient lube oil supply.
To eliminate this failure mode, the system was modified to keep the "soap-back" pumps running at all times to assure a continuous flow of oil.
Subsequent
to this change, no turbocharger failures have been experienced.
George E. Liebler State of Florida
)
)
County of Dade
)
ss Subscribed and sworn to before me this 2nd day of Hay, 1980.
NOTARY PUBLIC, in and for the County of Dade, State of Florida IX'4~tzQ'QJ!c.
~'Di8 oi I.!orÃQ Qt L..P8 iYip CV;II ~ 1-'I"A '~'~)f6 o'a()<3(
SO, 'a3 Hy commission expires:
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ATTACHMENT A (Revised 4/28/80)
St. Lucie 1 Diesel Generator Data Abbreviation Ke C.I.S.
C.
R.
D/G Maint.
Op Check Op Test P.
M.
P.
M. 0.
Surv.
Run Containment Isolation Signal.
Control Room Diesel Generator Maintenance Operational Check Operational Test Preventive Maintenance Plant l<ork Order Surveillance Run S.
U. T.
Startup Transformer Tech.
Rep; -
Technical Representative
DATE 1/18/80 1/18/80 1/16/80 1/16/80 1/8/80 1/8/80 1/8/80 1/7/80 1/7/80 1/7/80 1/2/80 12/19/79 12/19/79 12/5/79 12/5/79 12/5/79 11/21/79 11/7/79 1.1/2/79 11/1/79 11/1/79 10/31/79 10/31/79 10/18/79 10/18/79 10/17/79 10/16/79 10/16/79 10/16/79 10/3/79 START Y
Y I.OAO FAI I REHAR};S Op check prior to removi SUT Op check prior to removing SUT Periodic surv. run, Op check Op check to return to service Op check-B out of service Op check Op check to return-to service Op check-A out of service Op check-A 'out of service Surv. run Tripped due to reverse current while trying to load Surv. run Op check-A our for maint.
Op check Periodic test Periodic test Periodic test Op check Op check prior to A SUT out of service Op check Op check prior to A SUT out of service Op check Surv. run-24 hrs.
Op check Surv. run-24 hrs.
Attempted to start-out for maint.
Back in service Op check Low kw output (3290 kw); sufficient for safeguards load
SET DATE 8
10/3/79 A
10/3/79 8
9/26/79 8
9/19/79 8
9/7/79 8
9/5/79 A
9/5/79 8
9/3/79 8
9/3/79 A
9/3/79 A
9/2/79 9/2/79 8
9/2/79 A
9/2/79 8
8/15/79 A
8/1/79 8
7/18/79 A
7/4/79
-8 6/29/79 8
6/28/79 A
6/27/79 A
6/27/79 8
6/27/79 8
6/27/79 A
6/26/79 8
6/26/79 8
6/26/79 START LOAD FA L Y
Y...,...
RE('1ARKS Op check Surv.
run Periodic test-Sync to 183.4160 Bus Surv.
run Op check Verification Surv. run ttanual start Relay in start circuit failed; unit would not start.
automatically but was capable of manual start Op check Verification Op check-H2 meter in C.R. put on P.ll.O.
Op check Op check-due to hurricane the H2 meter in the C.R.
did not register Surv.
run Surv. run Surv.
run Surv. run 0
Op check Op check Op check Op check prior'o taking 8 out of service Op check Op check prior to taking A out of service Op check Op check-A out of service Op check-A out of service
ScT A
nATE START LOAD 6/22/79 Y
6/22/79 Y
6/22/79 Y
6/19/79 Y
6/7/79 6/7/79 6/6/79 FAIL REHARKS Op check Op check Op check--prior to removing A from service Surv.
run Op check after maint.
Op check-prior'to removing A from. service Surv. run 5/31/79 Y
5/31/79 Y
5/31/79 Y
5/26/79 Y
5/25/79 Y
5/24/79 Y
5/24/79 Y
5/15/79 5/9/79 5/6/79 5/6/79 5/5/79 5/4/79 5/4/79 5/4/79 5/4/79 5/1/79 Y
Y 4/25/79 Y
4/24/79 Y
4/24/79 Y
4/23/79 Y
4/17/79 Y
4/4/79 N
~ Y Y-Op check after maint.
Op check-B out of service Op check-prior to removing B from service Op check after maint'.
Op check-prior to removing B from service Maintenance Dept.
Checkout Test run Surv.
run Op check-prior to removing B from service Op check after maint.
Test run for t1aint.
Dept. observation Op check Surv.
run Op check Op check Op check Surv. run Op check-prior to removing B from service Op check after maint.
Tripped due to reverse current while trying to 1oad Surv.
run Surv. run Unit run at 1500 kw
SET Dg E
. 'TART 8
4/4/79 Y
A 4/4/79 Y
A 4/3/79 Y
A 3/31/79 Y
8 3/31/79 Y
8 3/31/79 Y
A 3/31/79 8
3/20/79 Y
3/19/79 3/6/7,9 8
2/20/79 Y
A 2/14/79 Y
2/6/79 1/31/79 LOAD Y
FA REt1ARKS Unit run at 1500 kw Surv.
run Surv.
run Verification of oil transfer pump operation Safeguards Test-accepted full load 3 minutes after speed droop trip.
Safeguards Test-speed droop problem; D/G tripped-Safeguards Test Surv.
run Op check Surv. run Surv.
run Op check-A SUT out of service Surv.
run Op check-prior to removing 8
SUT A
8 A
1/16/79 1/2/79
.Y 1/17/79 Y
1/17/79 Y
1/16/79 Y
Op check-after maint.
Op check Surv. run Op check-prior to removing 8 from service Surv. run 12/21/78 Y
8 12/21/78 Y
'A 12/21/78 Y
8 12/21/78 Y
8 12/19/78 Y
A 12/5/79 Y
A 12/1/78 Y
8 11/21/78 Y
A 11/15/78 Y
A 11/14/78 Y
8 11/14/78 Y
Op check-prior to removing A SUT Op check-prior to removing A SUT.
Opcheck-prior to removing A SUT Op check-prior to removing A SUT Surv.
run Surv.
run Op check-prior to removing A SUT Surv. run Test run Op check Op check-prior to removing A from service
SET B
'A A'0/4/78 Y
10/3/78 Y
10/3/78 Y
9/19/78 Y
9/19/78 Y
9/5/78 Y
9/5/78 Y
9/5/78 Y
8/15/78 Y ""
8/15/78 Y
8/10/78 Y
8/10/78 Y
8/10/78 Y
8/10/78 Y
8/1/78, Y
7/19/78 Y
7/19/78 Y
7/18/78 Y
7/18/78 Y
7/18/78 Y
7/4/78 Y
6/20/78 Y
DATE START 11/7/78 Y
11/4/78
~
Y 10/17/78 Y
10/12/78 Y
10/12/78 Y
10/4/78 Y
LOAD Y
FAIL REHARVS Surv. run Low voltage during bus transfer Surv.
run Op check Op check-prior to removing B SUT Check petcock leak Check petcock leak Surv.
run Op check Op check Surv. run Dirty relay. prevented the output breaker from closing from the control noom Op check Surv; run Surv. -run ----
Stopped manually due to low lube oil level-can 'add oil when running if needed Reactor tripped Surv.
run Op check Op check Surv.
run Test run Test run-prior to removing A from service Surv. run Op check-B out of service Op check-prior to removing B from service Surv.
run Surv. run
DATE START LOAD FAIL REttARKS 6/15/78 6/15/78 6/5/78 6/5/78 5/24/78 5/23/78 5/22/78 5/21/78 5/21/78 5/21/78 5/21/78 5/21/78 5/21/78 5/21/78 5/14/78 5/2/78 4/21/78 4/21/78 4/18/78 4/4/78 3/25/78 3/25/78 3/21/78 3/13/78 3/13/78 3/10/78 3/10/78 2/28/78 2/27/78 Y
Y N'p check Op check-B out of service Run for tech rep inspection Surv. run Troubleshoot-unloaded sat.
Mould not unload from the control room Surv.
run Troubleshoot Troubleshoot Troubleshoot Troubleshoot Troubleshoot Troubleshoot Output breaker would not close Loss of offsite power-8 out of service Surv. run Manually stopped because the switchgear door was found open Surv. run Surv.
run Surv.
run Surv. run Surv. run Surv.
run
~.Surv.
run-B out of service Op check-return to service
'p check-return to service Op check-prior to removing A 'from service Op check-prior to returning to service 7.
Op check-prior to removing A from service
8 1/29/78 8
1/17/78 A
1/3/78 A
12/21/77 8
12/21/77 8
12/16/77 A
12/16/77 A
12/6/77 11/18/77 A
11/18/77 A
, 8
'1/18/77 11/16/77 A
11/15/77 8
11/15/77 SET DATE A
2/26/78.
8 2/21/78 A
2/14/78 2/14/78 A
2/7/78 START Y
Y LOAD FAIL REHARVS Op'heck-prior to remove 8 from service Surv.
run Op check-prior to removing 8 from service Op check-return to service Surv.
run Reactor trip Surv.
run Surv. run Op check-prior to removing 8 for maint.
Surv.
run Op check after maint.
Op check after maint.
Surv. run Op check-return to service Op check-8 out of service Op check-prior to removing 8 from service Test run Op check Test after maint.-Stopped due to low coolant level; water could have been added during operation',
stop 8
11/15/77 A
11/15/77 A
11/1/77 A
10/28/77 8
10/28/77 8
10/23/77 10/23/77 8
10/23/77 A
10/23/77 Y
Y, was discretionary Surv.
run Op check Surv. test
.Test after maint.
Test prior to taking A out of service Op check Op check-A out" of service Surv. run Surv.
run
10/4/77 Y
10/4/77 Y
10/3/77 Y
10/3/77 Y
10/3'/77 Y
10/3/77 Y
9/26/77 Y
9/25/?7 Y
9/24/77 Y
9/24/77 Y
9/23/77 Y
9/23/77 Y
9/22/77 Y
9/22/77 Y
9/21/77 Y
9/21/77 Y
9/21/77 Y
9/21/77 Y
PPTE START LOA0 10/22/77 Y
10/22/77 Y
10/22/77 Y
10/21/77 Y
10/21/77 10/21/77 10/21/77 Y
10/18/77 Y
10/8/77 Y
10/4/77 10/4/77 Y
10/4/77 Y
REWARDS Op check-A out of servic Op check-A out of service:
Op check-A out of service Op check-A out of service Op check-A out of service Op check prior to taking A out of service Under, voltage relay dropped on 1A3 bus' Surv. run l
'I Loss of offsite power test on A side Surv.
run Troubleshooting Troubleshooting Troubleshooting Troubleshooting Troubleshooting Troubleshooting Surv.
run Surv. run Turbocharger breakdown Surv. run Surv. run Surv. run Op check-SUT out of service Op check-SUT out of service Op check-SUT out of service Op check-SUT out of service Op check-SUT out of service Op test-SUT back in service Op test-SUT out of service Op check-SUT out of service
SET.
GATE A
9/21/77 B
9/21/77 9/20/77 B
6/28/77 B
6/21/77 A
6/7/77 B
6/7/77 A
6/7/77 A
5/31'/77 B
5/31/77 ASB 5/16/77 A
5/3/77 B
9/6/77 A
9/6/77 A
8/24/77 B
8/24/77 B
8/23/77 A
8/23/77 A
8/23/77 A
8/18/77 A
8/18/77 B
8/17/77 B
8/16/77 8/16/77 A
8/2/77 B
7/19/77 A
7/5/77 A
7/5/77 START I,
Y.
LOAO FAIL Y,
Y
'Et1ARKS Op check-SUT out of serv Op check-SUT out of service Surv. run Op check Surv. run Surv.
run Op check Test run Test run Test run Op check-prior to taking B out of service Op check Op check-prior to taking A out of service Surv. run Op check Surv.
run Surv. run Surv.
run Surv. run-stopped due to load fluctuations-stop vias discretionary (added oil to gov.)
Surv. run Surv. run Surv. run Op check-P.H:
on air start relay valves
Op check after P.N.
Reactor trip Reactor trip Loss of offsite power following a reactor trip-all system.'esponded as designed Test run-B'ut of service
SET L~":T'=
START LOAD
- =AI L REt"lARKS A
4/5/77 Y'
3/15/77 Y
B 3/15/77 Y
A 3/15/77 Y
A 3/8/77 Y
B 3/8/77 Y
A 3/8/77 Y
B 3/8/77 Y
A 3/2/77 Y
A 3/1/77 Y
B 3/1/77 Y
A 3/1/77 2/22/77 2/22/77 B '/3/77' 5/2/77 Y
A 5/2/77 Y
A 4/30/77 Y
B 4/30/77 Y
A 4/22/77 Y
B 4/22/77 Y
B 4/19/77 Y
B 4/19/77 Y
B 4/19/77 Y
A 4/10/77 Y
4/10/77 4/9/77 4/9/77 Y
N Test run after repairs'p check-A out of service Test run after oil change Reactor trip-loss of 1A2 and 1A3 Reactor trip-loss of 1B2 and 1B3 Op check Op check Op check-stopped due to low tube oil level; could add oil during operation Op check-stopped due to low lube oil level; could add'il during operation Surv.
run Test run after fixing air leak Op check-air leak on A airstart sys.
Surv. run Surv. run Surv. run Surv.
run-gas completed satisfactorily-tripped on reverse current when taking D/G off the line Surv.
run P.W.O. test Surv. run Op check Op check-stopped due to low lube oil level; could add oil during operation 1
Op check-A out of service Test run Surv. run Op check-A out of service Attempted to start for surv..
run (failed to start because of unreset overspeed trip following generator lockout)
Generator trip test Generator trip test
SET DATE START LOAD fAIL REi"lARYiS B.
A A
2/22/77 2/22/77 2/15/77 2/2/77 2/2/77 2/1/77 1/21 /77 1/20/77 1/20/77 1/20/77 1/20/77 1/19/77 1/19/77 1/19/77 1/19/77 1/19'/77 1/18/77 1/18/77 1/18/77 1/7/77 1/7/77 1/7/77 1/6/77 1/6/77 1/5/77 1/3/77 12/21/76 12/7/76 11/29/76 11/1 9/76 Y
'Y Support for reactor trip'upport for reactor trip Surv. run Op Check Op check Surv. run Op run Op run 1 1/2 hrs Op run 1/2 hr Op run Op run Op run Op run Op run Failed to start - troubleshooting Failed to start Op check Op check Turbocharger breakdown Surv. run Op check Op check Op check Op check-B out of service Surv. run Run to check oil level after maint.
Surv.
run Surv.
run Surv. run Op check
11/7/76 11/2/76 11/2/76 11/1/76 11/1/76 10/19/76 10/5/76 10/1/76 9/27/76 9/24/76 9/24/76 9/17/76 9/7/76 9/2/76 8/17/76 8/1 3/76 8/10/76 8/10/76 8/6/76 8/3/77 8/1/76 8/1/76 7/31/76 7/31/76 7/31/76 7/20/76 7/6/76 6/21/76 6/21/76 6/15/76 START LOAO 'AIL Y
Y Y
Y REHARKS Test run Naint. test run Troubleshooting associated with the failure of ll/1/76 Op check Failed to start Surv.
run Surv.
run Test run-working on the Kw-hr meter Op check-stopped to add coolant water could have been added during operation, stop was discretionary Op check Op check Started to do periodic test of C. I.S.
Surv. run Test run Surv.
run D/G A channel check Op check Surv. run Op check-prior to removing B from service Surv. run Initiati on of 1 B C. I.S.
Initiation of 1B C.I.S.
Troubleshooting failure to start on C.I.S.
Initiation of lB C.I.S.-B failed to start Initiation of 1A C. I.S.
Surv.
run Surv.
run Op check-prior to maint.
Op check-prior to maint.
Surv. run
SET B
ASB B
DATE START
'/2/76 6/2/76 Y
6/2/76 Y
6/2/76 6/1/76 Y
5/26/76 Y
5/26/76 Y
5/26/76 Y
5/20/76 Y
5/20/76 Y
5/18/76 Y
5/18/76 Y
5/18/76 Y
5/17/76 Y
5/17/76 Y
5/17/76 Y
5/4/76 Y
5/1/76 Y
5/1/76 Y
4/30/76 Y
4/30/76 Y
4/20/76 Y
4/20/76 Y
4/6/76 Y
LOAD FAIL REt!ARKS Tripped due to abnormal rent phase 1
Troubleshooting Test, of relay Test sync. verification Mould not sync. with loaded bus (would not occur in
'mergency operation)
Op check Op check-prior to removing B from service Op check-prior to removing B from service Test after maint.
Op check-prior to removing B from service Test run Op check after maint. (sluggish start)
I Surv. run Op check-A out of service Op check-B out of service Surv.
run Surv. run Op check-prior to taking out line ¹I
, Op check-prior to taking out line ¹2 Pick up B SUT-1 1/2 hrs.
Pick up B SUT-2 hrs.
Surv. run Surv. run Surv.
run-Kbl indicator chart indicated fluctuations; problem was in the chart not the generator