ML19322D178
| ML19322D178 | |
| Person / Time | |
|---|---|
| Site: | Davis Besse, Oconee, Arkansas Nuclear, Crystal River, Rancho Seco, Crane  |
| Issue date: | 08/06/1979 |
| From: | Hartfield R NRC - NRC THREE MILE ISLAND TASK FORCE |
| To: | Parler W NRC - NRC THREE MILE ISLAND TASK FORCE |
| References | |
| TASK-TF, TASK-TMR NUDOCS 8002100022 | |
| Download: ML19322D178 (97) | |
Text
m gi(s> T'Qvg UNITED STATES f,og g
NUCLEAR REGULATORY COMMISSION y
g
- p WASHINGTON, D. C. 20555
\\...../
AUG G 1379 NOTE T0:
William Parler FROM:
Richard Hartfield
SUBJECT:
REQUEST FOR NPRDS FAILURE DATA ON B&W PLANTS Attached is a printout of all the failure data from B&W Plants that has been reported to the Nuclear Plant Reliability Data System (NPRDS).
I have made some sumary calculations and comments to help you in your review.
1.
The headings are pretty much self-explanatory.
The middle date is the failure event start (including time of day). The component and system codes are basically the same we use in the LER system.
The sequence number is just an accounting control number. The description is generally three short paragraphs; failure description, cause of failure, and finally, c.orrective action.
2.
Engineering data on the compenents is available, but I did not think it worthwhile to obtain at this time.
3.
The fourth line just to the right and below event dates, in recent years, indicates who else was informed of this failure.
Z means nobody and H indicates an LER was submitted to the NRC.
4.
It seems to me that many of the " failures" reported are pretty routine maintenance items, like leaking packing, etc. This is not too sur-prising since the utility maintenance group is often responsible for NPRDS, rather than the Operations Group.
5.
The facility codes are:
APLANO 1 - Arkansas 1 DPCNEE
- Oconee FPCCRP
- Crystal River MECTMI 1 - THI 1 SMURSS 1 - Rancho Seco 6.
There are no reports for Davis-Besse or THI-2.
7.
B&W failures account for about 5% of the total 5000 failures in the NPRDS data while they have about 10% of the plants.
8 0 0 210 0 CM f
g.
-_2-AUG 6 1979 8.
A review of the plant by plant, year by year summaries show wide variations which indicate to me that the data cannot be trusted as more than a very qualitative thing. A review of LER caused by component failure for these same time periods indicates a minimum of reporting to NPRDS.
If anything, NPRDS should have more failures than LER because failure reporting should be broader in NPRDS.
l
),
Richard Hartfield i
h
NPRDS LER PLANT YEAR FAILURE REPORTS COMP 0NENT FAILURE Arkansas 1 1974 1
1975 2
5 1976 26 13 1977 2
13 1978 13 Crystal River 1977 35 59 1978 32 35 Oconee 1 1973 12 1974 16 1975 16 7
1976 5
11 1977 26 21 1978 8
12 Oconee 2 1974 8
1975 17 17 1976 16 9 'i 1977 29 11 1978 13 7
Oconee 3 1974 5
1975 18 10 1976 24 10 1977 19 7
1978 9
15 TMI 1 1974 7
1975 5
23 1976 0
19 1977 1
5 1978 0
7
1 Rancho Seco 1975 3
7 1976 3
12 1977 6
8 1978 5
6 i
Davis-Besse 1977 38 1978 52
..h
L 20, 1979 NPRDS OUTPUT ON FATLURES AT DABCOCK & WILCOX PLANTS PAGE 1 EVENT /REPT EQUIPMENTS ACILITY DATES COMP /SYS SEQUENCE #
DESCRIPTION APLAN01 741228 VALVEX RBV-77B PINHOLE LEAK ON VALVE WELD AREA 7412281230 CBD 751 0090 741230 4
INSTALLATION / CONSTRUCTION DEFECT WELD WAS GROUND OUT AND REMELDED APLAN01 750329 VALV0P CV1009 VALVE TORQUES OUT WHEN TRYIN& TO 01 3 7503292000 CBD 752 0009 750331 E..o MUTOR AND TORQUE SWITCH REPLACED PARTS AND RE-ADJUSTED LIMITS APLAN01 751203 VALV0P CV3807 POSITION INDICATOR INCORRECT 7512032000 WAB 784C0041 751223 Z
LIMIT SWITCH SETTING DRIFT
\\
ADJUST SWITCH AND TIGHTEN CLUTCH ASSEMBLY APLAN01 760115 VALVEX CV-4803 VENT HEADER ISOLATION VALVE WOULD HOT OPEN 7601151200 SAB 784C0031 760318 Z
VALVE STEM TO SHORT, TOP 1.5 THREADS ARE STRIPPED. VALVE WILL OPEN WITH ASSISTANCE.
NEW VALVE STEM ON ORDER c
9
DL 20o 1979 NPRDS OUTPUT ON FAILURES AT BABCOCK 1 WILCOX PLANTS PAGE 2 EVENT / REPT EQUIPMENTS FACILITY DATES COMP /SYS SEQUENCER DESCRIPTION APLAN01 760223 MOTORX PM-4C SERVICE WATER PUMP EXCESSIVE MOTOR 7602231200 WAB 784C0016 VIERATION, INCREASING MOTOR TEMPERATURE 760318 Z
WORN BEARING CAUSED BY DIRT AND DUST CLEaHED WINDINGS. REPLACED LOWER BEARING, R E-A 's EMB L E D, M EG G ER ED.
APLAN01 760303 MOTORX PM-4C EXCESSIVE SERVICE WATER PUMP MOTOR 7603030800 WAB 784C0017 VIBRATION. MOTCR DID HOT COMPLETELY FAIL.
760414 Z
APPROXIMATELY 15 MILS LATERAL PLAY IN BEARING AT LOWER END BELL REPLACED LOWER BEARING APLAH01 760429 VALVEX CV-6203 VALVE DID NOT PASS RX BLDG PENETRATION 7604291400 SAB 784C0032 LOCAL LEAK RATE TEST.
760525 Z
NORMAL WEAR LAPPED IN SEATS AND DISK, REPLACED BONNET GASKET.
lAPLAN01 760512 BLOWER VSF1D ES SIGNAL DID NOT BLOCK HAND SWITCH 7605121000 SCB 784C0007 OPERATION OF REACTOR BUILDING COOLING FAN.
760526 Z
DEFECTIVE HANDSWITCH.
REPLACED HANDSWITCH.
l l
~
~
-~
m
__m
?L 20, 1979 NPRDS OUTPUT ON FAILURES AT BABCOCK 3 WILCOX PLANTS PAGE 3 EVENT /REPT EQUIPMENTS
?ACILITY DATES COMP /SYS SEQUENCE #
DESCRIPTION APLAN01 760613 INSTRU LT-2419 CORE FLOOD LEVEL INDICATION GIVES FALSE l
7606130830 SFE 784C0011 READINGS 761130 Z
BAD VENT VALVES AND BELLOWS l
l REPLACE VENT VALVES AND BELLOWS IN LEVEL TRANSMITTER APLAH01 760716 3 LOWER VSF-30A HYDROGEN PURGE INLET FAN TRIPPED DURING H2 7607160632 SCB 784C0005 PURGE LEAD SYSTEM TEST 760924 760803 H THERMAL OVERLOAD SET TOO LOW IN ABNORMALLY HOT ENVIR0fiMENT.
THERMAL OVERLOAD SETTING WAS INCREASED AND VENTILATION DAMPERS WERE ADJUSTED TO DECREASE ROOM TEMPERATURE.
APLAH01 760717 VALV0P CV-4400 RB SUMP TO AUXILIARY SUMP DRAIN ESAS VALVE 7607170250 SAB 784C0035 POSITION INDICATION INCORRECT.
760809 2
NORMAL WEAR, SET POINT DRIFT I
ADJUSTED LIMIT SWITCHES f
APLAN01 760807 PUMPXX P32B REACTOR COOLANT PUMP SEAL NOT STAGING 7608070050 CBD 784C0020 CORRECTLY.
760924 2
SEAL FAILURE DUE TO DEBRIS I
REMOVED AND REPLACED WITH REBUILT SEAL 1
ASSEMBLY.
l
[L 20, 1979 NPRDS OUTPUT ON FAILURES AT BABCOCK 1 WILCOX PLANTS PAGE 4 EVENT /REPT EQUIPMENTS FACILITY DATES COMP /SYS SEQUENCES DESCRIPTION
'APLAH01 760807 PUMPXX P32C REACTOR COOLANT PUMP SEAL NOT STAGING 7608070050 CBD 784C0022 PROPERLY.
760924 Z
UNKNCWN REMOVED SEAL AND REPLACED WITH REBUILT ASSEMBLY.
APLAN01 760808 VALVEX PSV-2695 MAIN STEAM HEADER RELIEF VALVE LEAKING 7608080800 HBA 784C0034 BY.
760902 Z
BROKEN LOWER RING RETAINING PIN.
REPLACED BROKEN RETAINING PIN, LAPPED SEATING SURFACES, CHECKED SPINDLE STRAIGHT NESS AND REASSEMBLED.
APLAN01 760810 SUPCRT HS-10 HYDRAULIC SHOCH SUPPRESSOR FLUID RESERVOIR 7608100800 CBF 784C0025 LEVEL FOUND LOW. PZR RELEIF LINE 760924 760823 H LEAKING SEALS AND 0-RINGS.
REPLACED SEALS AND 0-RINGS, TIGHTENED FITTINGS.
APLAN01 760810 SUPORT HS-12 HYDRAULIC SHOCK SUPPRESSOR FLUID RESERVOIR 7608100800 CBF 784C0026 LEVEL FOUND LOW. PZR RELEIF LINE 760924 760823 H LEAKING SEALS AND 0-RINGS REPLACED SEALS AND 0-RINGS, TIGHTENED FITTINGS.
/
?L 20, 1979 NPRDS OUTPUT ON FAILURES AT BABCOCK & WILCOX PLANTS PAGE 5 EVENT /REPT EQUIPMENT 8 9ACILITY DATES COMP /SYS SEQUENCER DESCRIPTION
'APLAN01 760810 SUPORT HS-3 HYDRAULIC SHOCK SUPPRESSOR FLUID RESERVOIR 7608100800 HBA 784C0029 FOUND LOW. MAIN STEAM HEADER 760924 760823 H LEAKING SEALS AND 0-RINGS.
TIGHTENED FITTINGS, REPLACED SEALS AND 0-RINGS APLAN01 760811 SUPORT HS-13 PIPE HANGER BRACKET LOOSE 7608110800 CBF 784C0027 760917 Z
MISSING BOLT PUT IN NEW BOLT TO HOLD BRACKET.
APLAN01 760811 SUPORT HS-34 PIPE HANGER RESERt0IR BRACKET LODSE j.
7608110800 HHA 734C0030 760917 Z
MISSING BOLT.
PUT IN NEW 80LT ON BRACKET.
APLAN01 760816 VALV0P CV1008 PZR SPRAY VALVE POSITIDH INDICATION NOT 7608162308 CBD 784C0039 CORRECT.
760915 Z
SET POINT DRIFT READJUSTED LIMITS.
\\
CL 20, 1979 HPRDS OUTPUT ON FAYLURES AT BABCOCK 1 WILCOX PLANTS PAGE 6 EVENT /REPT EQUIPMENT!
FACILITY DATES COMP /SYS SEQUENCES DESCRIPTION APLAN01 760903 PUMPXX P32A REACTOR COOLANT PUMP SEAL WAS NOT STAGING 7609032250- CBD 784C0019 PROPERLY AND SEAL CAVITY PRESSURES WERE 770415 OSCILLATING ABHORMALLY Z
UNKNOWN REMOVED DAMAGED SEAL CARTRIDGE FROM PUMP AND REPLACED WITH REBUILT SEAL CARTRIDGE APLAN01 760903 PUMPXX P32B REACTOR COOLANT PUMP SEAL WAS NOT STAGING 7609031659 CBD 784C0021 PROPERLY AND CHARTS INDICATED THAT THE 770415 LOWER SEAL HAD COMPLETELY FAILED PUTTIhG Z
FULL PRESSURE ON THE ONE REMAINING SEAL UNKNOWN REMOVED DAMAGED SEAL CARTRIDGE FROM PUMP AND REPLACED WITH REBUILT SEAL CARTRIDGE APLAN01 760907 MOTORX PM32D RC PUMP MOTOR LUBE OIL LEAK.
7609070800 CBD 784C0018 760924 Z
LOOSE FITTINGS.
TIGHTENED FITTINGS.
APLAN01 760910 VALV0P CV1055 REACTOR COOLANT QUENCH TANK VENT HEADER 7609040730 CBD 784C0040 VALVE OVERCURRENT TRIP 760924 Z
CONTACTS NOT MAKING UP PROPERLY.
CLEANED CONTACTS, REPLACED SPRINGS IN CONTACTOR, TIGHTENED ALL LOOSE WIRES, CHECKED FOR VALVE BINDING, CHECK VALVE OPERATION.
)L 20, 1979 NPRDS OUTPUT ON FAILURES AT BABCCC% & WILCOX PLANTS PAGE 7 EVENT /REPT EQUIPMENTS
- ACILITY DATES CCMP/SYS SEQUENCES DESCRIPTION APLAH01 760926 INSTRU PDT-1238 RCS MAKE-UP FLOW TRANSMITTER VENT LEAKING.
7609262230 PCB 784C0012 761021 Z
LEAKING VENT VALVE.
REPLACED VENT VALVE APLAN01 761021 VALV0P CV-6202 CHILLED WATER E.S.
ISOLATION VALVE WOULD 7610211150 SAB 784C0036 NOT REMAIN SHUT ON E.S. SIGNAL, BUT WOULD 761027 ON LOSS OF AIR.
761029 H RUPTURED FILTER ON DISCHARGE OF INSTRUMENT AIR Dr(ER. AIR LINES FULL OF DESICCANT.
SOLENOIDS. TRANSFER RELAY, AND AIR LINES BLOWN FREE OF DESICCANT.
'APLAH01 761103 INSTRU TE1015 FALSE READINGS WERE OBSERVED 7611030655 CBD 784C0014 770228 Z
ABMORMAL SERVICE CONDITION CHANGED OUT TEMPERATURE ELEMENT AND BRIDGES AND CALIBRATED APLAN01 761103 INSTRU TE1039 FALSE READINGS WERE OBSERVED 7611030655 CBD 784C0015 770228 Z
ABNORMAL SERVICE CONDITION REPLACED RTD AND BRIDGES AND CHECKED CALIBRATION OF BRIDGES
~
3 E
G A
P S
T N
A L
P V
E HI X
S L
TT O
O I
D H
IC C
L G
O N
E C
WE L
C N
C E
CD TM F
I I
H AE IO 5E W
D S
D W
LN WOO D
H U
E PA SRH L
S AN A
C D
EE EDT O
C A
E RL ELT NER K
N L
S C
HOP NRA C
EE E
P O
E TR AIP O
PR V
E L
RE TC HA C
OA L
R C
ER HNI CPE B
AT WE TOG ER A
R0 VU D
N W
ICO ERA B
O7 O
N I
S W
L L
P T F6 T
A A
ES N
UDS A T
2 AN M
VE NIP DN E
A S-R S
E LN I
I OAN S TV RU E
R AI TR M
I S
HC EB R
E VL SET K
D E
G H
I T
V IN TCD N R
IE TO W
O L
KY IY SOE U
U LV ET N
A CL MBE ETC O
L L
G D
GA OR E
A T
A NV TE T
L D
BU L
A CEP E
F I
K R
U I
S ATB IR G
O 0
D A
GAD N S
N N
AO EE H
W N
IR T
OPN I
A O
T G
I I
RB E
L NA ETT1Y A
E T
T DN O
D VD O
E TARAA Dt1E E
K D
U P
NO HT E
LE S
LE RA0L E0L L
S E
P I
II SA R
AT OH NEP1E CRU A
C T
R T
I VA Y
ST OPE 0R AFD E
O A
U C
HI EL A
U T
OC4 L
O V
L O
S TS RI P
ET R
ED E E2D PEM L
D P
E OO IO E
HC I
HN HNI6A EN A
A E
S D
BP WC R
TA D
TA TIP6B ROE V B
R D
R P
N 4
T#
NE 8
7 0
6 EC 20 23 1
92 MN 30 00 50 94 PE 30 20 0
7 IU 5C 6C SC W
UQ
- 4 4
A4 D4 QE 28 V8 S8 F6 ES 57 C7 E7 17 S
K P
U X
Y R
0 R
E S
B V
T V
/
KH AA NB AH M
CH VS II VH O
C 0
0 0
5 T
0 2
0 H
5 Z 0
Z P
0 1
1 1
E 1
1 0
0 RS 111 885 990 554
/E 223 111 003 001 TT 221 223 889 001 NA 1 10 000 000 110 ED 667 777 777 337 9
V 777 777 777 777 7
E 9
Y 1
1 1
1 1
T 0
0 0
E I
H N
N E
0 L
A A
A H
2 I
L L
L C
C P
P P
P L
A A
A A
D f
ll 20, 1979 NPRDS OUTPUT ON FAILURES AT BABCOCK & WILCOX PLANTS
~PAGE 9-EVENT /REPT-EQUIPMENTS
?ACILITY DATES.
COMP /SYS SEQUENCES DESCRIPTION DPCHEE1 731006 CRDRVE 1CRD-G-7 CONTROL ROD DRIVE STATOR SHORTED PHASE TO 7310062300 RBB 734 0029 PHASE 731009 REPLACED STATOR DPCNEE1 731006 VALVEX 1RC-4 VALVE WILL NOT OPEN 7310062300 CBD 764 7432 770114 Z
STRIPPED THREADS OH VALVE STEM REPLACED TORQUE LIMIT SWITCH AND MOTOR AND REBUILT THREADS DPCHEE1 731007 VALV0P 1RC-1 RC-4 PRESSURIZER POWER RELIEF BLOCK MOTOR 7310070930 CBE 734 0036 BURNED UP 731007 UNKNOWN REPLACED MOTOR DPCMEE1 731007 VALV0P 1RC-4 MOTOR BURNED OUT 7310070930 CBD 764 7450 770114 Z
UNKNOWN REPLACED MOTOR
CL 20, 1979 NPRDS OUTPUT CH FAILURES AT BABCOCX & WILCOX PLANTS PAGE 10 EVENT /REPT EQUIPMENT #
FACILITY DATES COMP /SYS SEQUENCE #
DESCRIPTION DPCHEE1 731120 CRDRVE 1CRD-F-10 CONTROL ROD DRIVE STATOR SHORTED PHASE TO 7311201500 RBB 734 0030 PHASE 731125 REPLACED STATOR DPCHEE1 731121 CRDRVE 1CRD-M-9 CONTROL ROD DRIVE STATOR SHORTED PHASE TO 7311210238 RBB 734 0031 PHASE 731125 REPLACED STATOR DPCHEE9 731125 CRDRVE 1CRD-E-11 CONTROL ROD DRIVE STATOR SHORTED PHASE TO 7311251158 RBB 734 0032 PHASE 731213 REPLACED STATOR DPCNEE1 731211 CRDRVE 1CRD-M-13 CONTROL ROD DRIVE STATOR SHORTED PHASE TO 7312112000 RDB 734 0033 PHASE 731213 REPLACED STATOR
0L 200 1979 NPRDS OUYPUT ON FAZLURES AT BABCOC;' & WILCOX PLANTS PAGE 11 EVENT /REPT EQUIPMENTS 9ACILITY DATES COMP /SYS SEQUENCE 8 DESCRIPTION DPCNEE1 731212 CRDRVE 1CRD-E-3 CONTROL RCD DRIVE STATOR SHORTED PHASE TD 7312122030 RBB 734 0034 PHASE 731213 REPLACED STATOR DPCHEE1 731213 CRDRVE 1CRD-C-11 CONTROL ROD DRIVE STATOR SHORTED PHASE TO 7312130605 RBB 734 0035 PHASE 731224 i
I REPLACED STATOR i
DPCNEE1 731227 VALV0P 1HP-20 VALVE WILL NOT CLOSE i
7312270730 SFD 734 0037 731227 FAULTY TORQUE SWITCH REPLACED TORQUE SWITCH DPCHEES 740211 CRDRVE 1CRD-E-13 CONTROL ROD DRIVE STATOR SHORTED-PHASE TO 7402111525 RBB 741 0015 PHASE 740214 REPLACED STATOR L---.________-----___________
OL 20,1979 NPRDS DUTPUT ON FAILURES AT BABCOCK & WILCOX PLANTS PAGE 12 EVENT /REPT EQUIPMENT #
FACILITY DATES COMP /SYS SEQUENCE #
DESCRIPTION
'DPCHEE1 740211 CRDRVE 1CRD-P-6 CONTROL ROD DRIVE STATOR SHORTED-PHASE TO 7402111337 RBB 741 0014 PHASE 740214 REPLACED STATOR
'DPCHEE1 740401 VALVEX 1FDW-41 VALVE LEAKS AROU:4D SEAT 7404010830 HHA 752 0233 740517 UNKNOWN REPLACED GASKETS DPCHEE1 740423 VALVEX 1RC-4 VALVE OPERATED SPURIOUSLY 7404230930 CBD 764 7433 770114 Z
VALVE OFF SEAT REPAIRED VALVE DPCNEE1 740522 PUMPXX EFW PUMP PUMP FAILED WHILE OPERATING. SEALS RAN HOT 7405221200 HHB 764 7418 CAUSING BEARINGS TO BURN OUT AND BEARING 770114 INSPECTION PLATE TO FALL OFF Z
OPERATOR ERROR REPLACED BEARINGS AND INSPECTION PLATE
~
li{
3 1
E G
A P
S Y
N A
L P
N E
D X
P E
O O
T C
G A
L H
O L
I I
T P
W L
A G
L E
P N
E S
O I
K K
R Y
C C
V D
R I
O T
T H
C R
O B
T NM D
D A
H OO E
N B
T D
PO T
A I
O UR R
T A
W R
O S
A E
SL H
L R
D G
PO S
S A
S A
E N
IR L
E E
L I
RT Y
A S
R G
A S
TN L
E U
N E
U O
E S
S G
L I
S A
RC K
K N
I L
C R
O I
A G
I A
P S
O TM LR E
N R
F U
A D
T OO O
L I
O W
E A
N N
C L
T F
OO N
O O
O R
I S
O TM O
I M
E A
TE O
I O
T T
O VD F
D V
MD T
D U
P R
N ON N
E RL E
A E
P I
F W
CU R
W C
EA YC R
Y CE T
R O
O O
O A
KV TA T
T AG U
C K
N EP T
N L
A LL E
L LN O
S A
K PM A
K P
EE UP N
U PA E
E N
IO T
N E
RH AE E
A EL S
D L
U PC S
U R
BT FR P
F RF D
R P
H TS 1
NE 23 19 30 2
EC B2
- 9 05 0
MN 14 K3 11 4
PE P7 7
0 07 IU D
W 1
UQ C4 R4 D4
- 4 QE R6 C6 F5 C6 ES 17 I7 17 E7 S
X E
P R
Y X
V 0
T S
P R
V E
/
PC CR VH PS O
C 0
0 0
T 0
Z 0
B 0
Z P
2 2
2 E
1 1
1 RS 334 994 889 664
/E 001 221 000 1 11 TT 661 661 888 991 NA 000 000 000 000 ED 447 447 444 447 9
U 777 777 777 777 7
E 9
1 Y
1 1
1 1
T E
E E
E 0
I E
E E
E 0
L N
H H
H 2
I C
C C
C C
P P
P P
L A
D D
D D
l li llll l
- ll ll1
DL 20, 1979 HPRDS OUTPUT ON FAILURES AT BABCOCK 1 WILCOX PLANTS PAGE 14 EVENT /REPT EQUIPMENT 3 FACILITY DATES COMP /SYS SEQUENCES DESCRIPTION DPCHEE1 741009 VALVEX 1HP-15 VALVE NOT OPERATING PRCPERLY 741009 SFD 752 0234 SLUGGISH AND RESETS BY ITSELF 741108 l
t UNKNOWN REPLACED BAD CONTROL UNIT & RECALIBRATED
]
DPCHEE1 741028 VALVEX 1CC-16 VALVE STEM BROKEN OFF o
741028 WB3 744 0553 741122 UNKNOWN REPLACED VALVE DPCHEE1 741103 VALV0P
?HP-2 VALVE WILL NOT OPERATE ELECTRICALLY 741103 SFD 754 0152 741104 BLOWN FUSE REPLACED FUSE DPCHEE1 7'31118 MOTORX 1RC-P1B2 LEAK 741118 CBD 752 0217 750228 SEAL FACES HEED LAPPING RELAPPED SEAL FACES - REPLACED
'O' RINCS
.~
~
J 5L 20, 1979' HPRDS OUTPUT ON. FAILURES AT BABCOCK & WZLCOX PLANTS P ACE.15.-
- EVENT /REPT
- EQUIPMENT 4 7ACILITY DATES.
COMP /SYS SEQUENCES DESCRIPTION
'I DPCHEE1.741210
- VALV0P 1LP-22 FAULTY MOTOR
.741210 SFF 752 0245
.l 741223 i
~ l UNKNOWN REPLACED WITH NEW MOTOR
- DPCNEE1 741216 VALV0P ILP-21 FAULTY MOTOR
'741216 SFF 744 0550 741221 UNKNOWN REPLACED MOTOR DPCNEE1 741227 VALV0P 1HP-20 MAKE UP FLOW CHANGES WITH NO APPARENT 741227 SFD 752 0241-CHANGE IN VALVE POSITION 741228 FAULTY POSITIONER-REPAIRED POSITIONER DPCHEE1 ~ 75 0107.
VALVEX 1LP-79 VALVE LEAKS AND IS NOT REPAIRABLE 750102 SFF 752 0235 750107-UNKNOWN REPLACED VALVE
_= __- - __ ___
--. _ _ _ _ = _ =.
'I Q
L 20g 1979 NFRCS CUTPUT ON FAILURES AT BABCOCK 1 WZLCOX PLANTS PAGE 16 EVENT /REPT EQUIPMENTS
.ACZLITY DATES COMP /SYS SEQUENCES DESCRIPTION DPCNEE1 750104 VALVCP 1LP-2 VALVE NOT OPENING AT 300 PSIG 750104 SFF 752 0244 750110 i
FAULTY MICRO-SWITCH REPLACED MICRO-SWITCH DPCNEE1 750105 PUMPXX 1RC-P1A1 WORN OUT SEAL 750105 CBD 752 0230 750113 NATURAL END OF LIFE REPLACED SEAL ASSEMBLY DPCNEE1 750105 VALV0P 1NP-228 VALVE WILL NOT OPERATE BY MOTOR 750105 SFD 752 0242 750107
'B' FINGER INTERLOCK STUCK STRETCHED SPRING IN ORDER TO MAKE CONTACT DPCHEG1 750114 MOTORX 1RC-P1A1 WORN SEALS 750114 CBD 752 0216 750217 I
l l
HATURAL END OF LIFE REPLACED GASKETS, SEAL RING, RUNNER,AND CUP
\\
JL 20, 1979 HPRDS OUTPUT ON FAILURES AT BABCOCK & WILCOX PLANTS
'PAGE 17 EVENT /REPT
. EQUIPMENTS FACILITY DATES COMP /SYS SEQUENCES DESCRIPTION DPCNEE1 750114 PUMPXX 1RC-P1B2 WORN SEALS 750114 CBD 752 0232 750217 NATURAL END OF LIFE REPLACED GASKETS, RING, RUNNER, SLEEVE, INSERT DPCHEE1 750203 VALVEX 1RC-66 VALVE LEAKS PAST SEAT j
750203 CBD 754 0148 750204 MANUFACTURING AND/OR INSTALLATION ERROR LAPPED SEAT DPCNEE1 750225 PUMPXX 1RC-P1A1 FAULTY SEALS - LEAK *?.0 750225 CBD 752 0231 750310 L
WORN SEALS - REPLACED SEAL INSERT, RINGS, SEAL HOUSING, RING ASSEMBLY,AND COLLAR DPCHEE1 750314 VALVEX 1BS-3 VALVE JAMS AFTER TRt.VELING A SHORT 7503141520 SCC 764 7424 DISTANCE. MOVING THE VALVE MANUALLY ALLOWS 760826 ELECTRICAL OPERATION.
Z PACKING GLAND T00 TIGHT l
LOOSENED PACKING GLAND. REPAIR DELAYED DUE TO THE NON-CRITICAL HATURE OF THE FAILURE.
..s_,.
DL 20,S1979
.NPRDS OUTPUT 0N FAILURES AT BABCOCK 3 WILCOX PLANTS PAGE 18.
EVENT /REPT EQUZPMENTS FACILITY DATES-
. COMP /SYS-SEQUENCE #
. DESCRIPTION-
.DPCNEE1 750502 VALV0P-752 0243
. VALVE BEING OPEN WHEN IT WAS OPENED 1LP-18 VALVE STATUS INDICATOR DID NOT SHOW THE 7505021700' SFF-
'740503.
L OPEN LIMIT SWITCH CONTACTS WERE CORRODEDJ CLEANED CONTACTS.
DPCHEE1 750804 PENETR WA-5 LEAKING SF6 GAS 7508040900 SAB 764 7416 760830 Z
CRACK AROUND WELDS IN PENETRATION REPLACED PENETRATION DPCHEE1 750804 PENETR 'WB-1 LEAKING SF6 GAS i
7508040900 SAB 764 7417 I
760830 Z
CRACK AROUND WELDS IN PENETRATION e
REPLACED PENETRATION DPCNEE1 750923 PUMPXX 1 B W ? 1 '.
SEAL' LEAK 7509232100 SCC 764 7419 751027 A
).
I' 9
1 E
G A
P s
S T
N A
L P
X O
S S
C E
E L
S S
I O
/
O W
L L
G C
C N
1 I
R K
T T
C N
N
'O O
E E
C M
M B
T T
A S
S D
U U
L J
H J
H A
T D
C D
C E
T A
A T
A T
E SL A
I I
T A
E S
F W
F W
A S
LE S
E O
S O
S T
L AS R
3 A
C T
X U
T E
T E
R E
IT S
E O
L U
U U
U S
NF A
R B
E O
TT Q
OT T
Q O
AA P
U A
FH R
H F
R T
T HH L
T F
H IG O
HG I
O F
CS G
I I
C RI T
CI R
T D
A E
N A
M N
N T
DT TT D
R H
MD I
F I
O O
I D
I D
A S
N K
L I
W T0 E
WO T
E H
DA A
X T
T S
N0 T
SO N
T D
E E
O D
U P
IT S
T I
S S
E L,
L B
E P
I E
O U
E O
U I
D LT C
T R
U PE J
UE P
J O
AE E
T A
U C
Q V
D QV D
P R
TK V
I L
O S
R TL A
RL T
A M
R SS L
M P
E O
EA E
OA E
E U
O NA A
I E
S D
T SV R
TV S
R P
C IG V
L R
D R
P H
S TS NE 3
4 1
5 EC 3
3 C2 3
MN 70 80 14 64 PE 15 15 P7 67 TU UQ P1 P1 P4 C4 QE L6 L6 L6 R6 ES 17 I7 17 17 S
P P
X X
Y 0
0 X
E S
V V
P V
/
LF LF MF LD P
VS VS PS VC O
.C 0
0 5
0 T
3 A 3
A 1
A 0
Z P
2 2
5 9
E 1
1 1
0 RS 445 445 993 993
/E 111 111 220 000 TT 112 112 229 11 9 NA 1 11 111 11 0 000 ED 555 555 556 666 9
V 777 777 777 777 7
E 9
Y 1
1 1
1 1
T E
E E
E I
E E
E E
0 L
H H
N N
2 I
C C
C C
C P
P P
P L
A D
D D
D l:i!I l
ll
!ll I
1lllt t
FL 200 1979 HPRDS OUTPUT OH FAILURES AT BABCOCK E WILCOX PLANTS PAGE 20 EVENT /REPT EQUIPMENTS FACILITY DATES COMP /SYS SEQUENCE #
DESCRIPTIDH DPCHEE1 760210 PEHETR ED-3
'O' RING SEAL LEAKING 7602100830 SAB 764 7403 760903 Z
SEAL IS CORRODED i
REPLACED SEAL DPCHEE1 761101 BLOWER 1RBC-1A EXCESSIVE VIBRATIDH AND LOAD RUBBING 7611011200 SBB 764 7394 CAUSED BY WORN PARTS 770214 Z
CYCLIC FATIGUE REPLACED LUG, FAN BLADE, AND UPPER AND LOWER BEARINGS DPCNEE1 761209 VALVEX 1HP-120 VALVE LEAKING THROUGH SEAT 7612091200 SFD 764 7428 770201 Z
SCARED VALVE SEAT LAPPED VALVE SEAT DPCHEE1 761218 VALVEX 1HP-57 VALVE HARD TO OPERATE AND LEAKING THROUGH 7612180800 SFD 773B0029 SEAT 770330 Z
HATURAL END OF LIFE REPLACED VALVE
JL 20,-1979 NPRDS.0UTPUT ON'FATLURES AT BABCOCK 4'WILCOX PLANTS L PACE 21 EVENT /REPT-
.-EQUIPMENTS
?ACILITY DATES.
COMP /SYS. SEQUENCES.
, DESCRIPTION DPCHEE1 ~ 770113' VALV0P 1LP-18 BRAKE ENGAGING INCORRECTLY' 7701131200 SFF'
'773B0031 770330. Z OUT OF-ADJUSTMENT
-ADJUSTED' BRAKE DPCHEE1-770116-VALVEX 1HP-322 VALVE LEAKING PAST SEAT 7701161200 SFD 773B0028-770201 Z
SCARRED VALVE SEAT LAPPED AND REPACKED VALVE DPCHEE1 770119' VALVEX' 1RC-66
'VAfVE LEAKING THROUGH SEAT-7701190800 CBD 773B0030 770201 Z
' SCARRED VALVE. SEAT LAPPED VALVE SEAT DPCHEE1 770417 VALVEX 1HP-71 VALVE LEAKS BY SEAT 7704170400 SFD 773C0235
'770907 Z
UNKNOWN
'l LAPPED SEAT, REPLACED SPRINGS AND GASKETS
CL 20, 1979 HPRDS OUTPUT OH FAILURES AT DABCOCK & WILCOX. PLANTS PAGE 22 EVENT /REPT EQUZPMENTS FACILITY DATES COMP /SYS SEQUENCES DESCRIPTIDH DPCHEE1 770506 PUMPXX 1HP-PIB EXCESSIVE VIBRATICH 7705061100 SFD 774A0279 770919 Z
UNKNOWN i
REPLACED MECHANICAL SEAL DPCHEE1 770721 VALVEX 1RC-66 VALVE LEAKS PAST SEAT 7707211100 CBD 774A0288 771104 Z
DEFECTIVE GASKET AND WORN DISC REPLACED GASKETS AND DISC DPCHEE1 770729 VALVEX 1HP-43 VALVE LEAKS 7707291200 SFD 774A0285 771104 Z
UNKNOWN REPLACED DISC, STEM, SPRING DPCHEE1 770730 VALV0P 1FDW-106 VALVE WOULD HOT OPERATE 7707301430 HHA 774B0292 770817 Z
DEFECTIVE SPLEHOID P:iLACED SOLEHOID
EL 20, 1979 HPRDS OUTPUT ON FAILURES AT BABCCCK & WILCOX PLANTS PAGE 23 EVENT /REPT EQUIPMENT 2 FACILITY DATES COMP /SYS SEQUENCE #
DESCRIPTION DPCNEE1 770731 VALVEX 1RC-5 VALVE WILL NOT OPERATE MANUALLY 770731ta40 CBD 774A0286 771104 C Z
DEFECTIVE HANDWHEEL REPLACED HANDWHEEL AND STEM DPCHEE1 770805 VALV0P 1PR-2 VALVE WOULD HOT CLOSE, AIR BLOWING 7708051930 SCB 773C0237 CONTINU0USLY FROM EXHAUST 4
i 770817 Z
f RUPTURED DIAPHRAGM j
REPLACED DIAPHRAGM DPCHEE1 770806 VALV0P 1PR-2 VALVE WILL NOT OPEN 7708060415 SCB 773C0238 770817 l
Z l
RUPTURED DIAPHRAGM l
i REPLACED DIAPHRAGM iDPCHEE1 770915 VALVEX 1HP-285 VALVE FAILED TO FUNCTION PROPERLY 7709151100 SFD 774A0284 771104 Z
UNKNOWN REPLACED VALVE W/KER0 TEST S/N WA1-24 l
$L_200.1979 NPRDS OUTPUT OH FAllbRES AT BABCOCK 1 WILCOX PLANTS.
.PAGE.24 EVENT /REPT-EQUIPMENT 8 FACILITY DATES COMP /SYS SEQUENCES
-DESCRIPTION DPCHEE1: 770916
. VALV0P-TCC VALVE WILL NOT OPEH ELECTRICALLY 7709160700 WBB 774A0293 771104.
Z TORQUE SWITCH OUT OF ADJUSTMENT ADJUSTED TORQUE SWITCH DPCHEE1 -770917 VALVEX 1HP-147 VALVE FAILED TO FUNCTION PROPERLY 7709170900 SFD 774A0283 771104 Z
UNKNOWN REPLACED VALVE W/KER0 TEST S/HOBB7-7 DPCHEE1 '770918
. VALVEX 1HP-126 VALVE LEAK BY SEAT 7709180930 SFD 774A0281 771104 Z
UHKNOWN REPLACED GASKET, SPRING,AND SEAT DPCHEE1 770918 VALVEX 1HP-127 VALVE LEAKS BY SEAT 7709180950 SFD 774A0282 771104 Z
UNKNOWN REPLACED DISK, SPRING, GASKET
- i "n.
pt 20, 1979 NPRDS 0UTPUT ON FAILURES AT-BABCOCK & WILCOX, PLANTS.
E PAGE' 25..
EVENT /REPT..
EQUIPMENTS-P FACILITY.
DATES
' COMP /SYS' SEQUENCE 8-DESCRIPTION
'l DPCNEE1. 770921 VALVEX -1RC-7
' REMOVE' AND REPL ACE VALVE TO ELIMINATE 7709211130 CBD
'774A0292 PREVIOUS PROBLEMS.
771006
-H 1
-Z
' DEFECTIVE VALVE REPLACED VALVE WITN 2IN 1S00# S/S GATE q
BORG WARHER S/N 24561 1
DPCHEE1 -770926
.VALVEX 1RC-67 VALVE LEAKS THROUGH 7709261000 CBD 774A0290 771104.
Z 1
UNKNOWN REPLACED WITH IDENTICAL VALVE S/N BL8891.
'DPCHEE1 770926 VALVEX.1RC-68 VALVE LEAKING THROUGH 7709261000 CDD 774A0291 1
771104 UNKNOWN REPLACED WITH IDENTICAL VALVE S/N BLO8890 DPCNEE1 770926 VALV0P 1LPSW-4 DID NOT MEET MAXIMUM STROKING TIME 7709261300 WAB 774B0294 REQUIREMENTS-770926 Z
LIMIT SWITCH OUT OF ADJUSTMENT q
ADJUSTED LIMIT SWITCH.
L...___.____.______.___._
________..__.______.m____
- _ _ _ _ _ _ l UL 20, 1979 NPRDS OUTPUT ON FAILURES AT BABCOCK & WILCCX PLANTS PAGE 26 EVENT /REPT EQUIPMENT 3 FACILITY DATES COMP /SYS SEQUENCE #
DESCRIPTION DPCHEE1 770930 VALVEX 1RC-5 VALVE FAILED 7709301630 C3D 774A0287 771104 UNKNOWN REPLACED VALVE DPCHEE1 771004 CBD SEALS LEAKING 7710041100 PUMPXX 774A0278 771104 Z
UNKHCWN REPLACED SEALS DPCHEE1 771004 PUMPXX 1RC-P181 SEALS LEAKING 7710041100 CBD 774A0280 771104 Z
UNKNOWN REPLACED SEALS lDPCHEE1 771004 VALVEX 1RC-66 VALVE LEAKS BY SEAT 7710040300 CBD 774A0289 771104 Z
SEAT SCARRED LAPPED SEAT AND INSTALLED NEW GASKETS
_~ _--
)L;20,o1979 HPRDS OUTPUT-OH FAILURES AT BABCOCK & WILCOX PLANTS PAGE 277
-EVENT /REPT'.
EQUIPMENT 8' FACILITY DATES-COMP /SYS SEQUENCES
-DESCRIPTION DPCNEE1 771011J VALV0P' ILP-22.
VALVE WILL NOT OPEN ELECTRICALLY.
-7710111940 SFF
'774A0294
.771104 Z'
BAD COIL REPLACED COIL
- DPCNEE1 '771116 PUMPXX 1BS-P1A
, MECHANICAL SEAL LEAKING 7711161300 SCC-774B0290
.780111 Z
SEAL CRACKED REPLACED SEAL i-'DPCNEE1 780501 VALVEX 1RC-4
_ VALVE LEAKS AROUND PACKING 7805011200 CBD 783A0333 780711-Z VALVE IMPROPERLY PACKED REPACKED VALVE, REPLACED BONNET ASSEMBLY
.DPCHEE1 780504 VALVEX' 1LP-2' VALVE WOULD NOT REOPEN.AETER BEING CLOSED 7805041400 SFF 783A0332 780711 780519 H UNKNOWN-THE YOKE NUT AND STEM WERE BOUND l
REPLACED INTERNALS OF VALVE i
L 20,'1979' HPRDS OUTPUT ON-FAILURES'AT BABCDCK 4 WILCOX PLANTS PAGE 28
- EVENT /REPT
. EQUIPMENTS PACILITY' DATES
_ COMP /SYS. SEQUENCES.
DESCRIPTION L
tDPCNEE1 780512 VALVEX. 1CF-12.
VALVE LEAKING AT COVER PLATE 7805121100 SFE 783A0331 780711..
WORN SEALS L
REPLACED SEALS DPCHE 1J 780517 VALV0P 1RC-7'
_ VALVE WILL NOT OPEN BY OPERATOR 7805170600 CBD 783A0334 780711 Z
WORN SOLEHOID VALVE REPLACED SOLEN 0ID VALVE
.DPCHEEl' 780803 CRDRVE 1CRD-G-7 CONTROL ROD 1 ON GP 7 DROPPED FORCING UNIT
~
-7808031000 :3B 784B0125-TO OPERATE AT REDUCED POWER 781009 780925 H STATOR SHORTED OUT ON A PHASE-TO-NEUTRAL REPLACED WITH HEW STATOR DURING REFUELING OUTAGE DPCNEE1- '780908~
VALVEX 1HP-31
- VALVE HP-31 LEAKS BY SEAT WHEN CLOSED 7809081600 SFD 784B0130
-781006
-Z SEAT CUT BY PRESSURE REPLACED VALVE STEM AND SEAT 1
l
,1
-- f SL 30, 1979 HPRDS OUTPUT ON. FAILURES AT BABCOCK 1'WILCOX' PLANTS
'PAGE 29; EVENT /REPT-EQUIPMENT #'
PACILITY DATES
. COMP /SYS -SEQUENCES DESCRIPTION iDPCHEE1 '780910
'VALV0P -1PR-2
-1PR-2 VALVE OPERATOR WILL NOT OPEN VALVE 7809101600 SCB 784B01?.1 781006 Z
WIRING SHORTED AND CHARRED REPLACED WIRING IN RELAYS AND SWITCHES DPCHEE1 780918 VALVEX 1HP-120 VALVE LEAKS BY SEAT WHEN CLOSED 7809181600 SFD' 784B0129 781006 Z
VALVE SEAT WORN AND HOT SEALING OFF REPLACE AND LAPPED VALVE SEAT DPCHEE2.740925 VALVEX 2LP-14 VALVE WILL NOT OPERATE PER SPECIFICATIONS 7409251200 SFF 764 7486 741231 Z
FAULTY VALVE EPAIRED VALVE AND SET LIMITS DPCHEE2.741003 VALVEX. 2LP-37 VALVE LEAKING THROUGH SEAT 7410031200 SFF 764 7490 770208 A
UNKNOWN l
l RELAPPED SEAT
l 4
[L 20, 1979
.HPRDS OUTPUT'0H FAILURES AT BABCOCK & WILCOX PLANTS-
.PAGE'30-
.. EVENT /REPT EQUIPMENTS FACILITY DATES COMP /SYS SEQUENCE #~
DESCRIPTION
-DPCHEE2:~741017 V A LV 0'P ' '2BS-2 CONTROL ROOM INDICATES' VALVE IN' CLOSED
-7410171200. SCC
~ 764 7500 POSITION. VISUAL INSPECTION SHOWS VALVE 770117 PARTIALLY OPEH.
Z CHANGE IN LIMIT SWITCH SETTING Y
READJUSTED LIMIT SWITCH g
DPCHEE2.741025 VALV0P 2RC-1 VALVE WOULD HOT OPEN ON DEMAND 7410251200 CDD
.764 7505 770117 Z
FAULTY TORQUE SWITCH I
REPLACED TORQUE SWITCH DPCHEE2 741119 GENERA 2DIB ERRATIC OUTPUT 7411191200 EBG 764 7463 770208 A
UNKNOWN REPLACED S*... i CONTROL RECTIFIER
.DPCHEE2 741209 VALV0P 2LP-22 VALVE WILL HOT'0PERATE
' t 7412091200 SFF 764 7502 770117 Z
FAULTY' MOTOR j
i
-l REPLACED MOTOR l
$L 20, 1979-HPRDS OUTPUT ON FAILURES AT BABCDCK & WILCOX PLANTS' PAGE 31 EVENT /REPT-
.. L EQU7NfENT #
FACILITY __ DAT ES
- COMP /S"5. SE'sd EhCES DESCRIPTION l
DPCNEE2 J741215 VALV0P 2LP-22 VALVE WILL NOT' OPERATE 7412151200 'SFF.
764.7503 770117
-Z MOTOR FAILED DUE TO INSTALLATION ERROR
. REPLACED MOTOR DPCNEE2 '741225 VALV0P 2 LWD-1 INDICATIDH LIGHTS IN CONTROL ROOM HOT 7412251200 MAB 764 7504 WORKING 770117 Z
LIMIT SWITCH OUT OF ADJUSTMENT READJUSTED LIMIT SWITCH DPCHEE2 750101 VALVEX 2FDW-99 VALVE LEAKING 7501011200 HHB 764-7479 770117 Z
. FAULTY GASKET REPLACED GASKET DPCHEE2 750121 VALVEX.2RC-67 VALVE LEAKS PAST SEAT 7501211200 CBD 764 7496 770117 FAULTY VALVE REPLACED VALVE l
e
... =
[L 200(1979.
HPRDS DUTPUT ON FAILURES AT;BAGCOCK 1 WILCOX PLANTS
'PdGE 32' EVENT /REPT' EQUIPMENT 8
?ACILITY
' DATES.
' COMP /SYS SEQUEHCE8
. DESCRIPTION DPCHEE2 750121' VALVEX 2RC-68 VALVE LEAKS PAST, SEAT' 7501211200 CBD 764 7499 770117' A
FAULTY VALVE REPLACED VALVE I
DPCNEE2 750205 PUMPXX 2RC-P2A1 TEST N0ZZLE
'J' CAP HAS A LEAK THROUGH-7502051200 CBD 764 7471 WELD 770117.
Z FAULTY WELD
' REWELDED TO STOP LEAK
- DPCHEE2 150205 PUMPXX 2RC-P2A2 TEST N0ZZLE
'J' CAP HAS A LEAK THROUGH 7502051200 CBD 764 7473 WELD 770117 Z
FAULTY WELD REWELDED TO STOP LEAK DPCNEE2 750205 PUMPXX 2RC-P2B1 TEST N0ZZLE
'J' CAP HAS A LEAK THROUGH 7502051200 CBD 764 7475 WELD
.770117 Z
FAULTY WELD REWELDED TO STOP LEAK k
4 4
y, 0L 20, 1979 HPRDS OUTPUT ON FAILURES AT BABCOCK & WILCOX PLANTS PAGE 33 EVENT /REPT EQUIPMENT #
PACILITY DATES CCMP/SYS SEQUEHCES DESCRIPTION DPCHEE2 750205 PUMPXX 2RC-P2B2 TEST Nd2ZLE
'J' CAP HAS A LEAK THROUGH 7502051200 CBD 764 7477 WELD 770117 Z
FAULTY WELD REWELDED TO STOP LEAK l
DPCNEE2 750210 MOTORX 2RC-P2B1 LEAK AROUND SEALS 7502101200 CBD 764 7465 770117 Z
UHKHOWN REPLACED GASKETS AND
'O' RING SEAL COVER DPCHEE2 750214 VALVEX 2HP-58 CRACK IN WEDGE FOR V-BEVEL 7502141200 SFD 764 7483 770117 Z
UNKNOWN WELDED WEDGE l
lDPCHEE2 750220 VALVEX 2LP-17 HANDWHEEL WILL NOT ENGAGE MANUALLY l
7502201200 SFF 764 7487 l
770117 l
Z f
FAULTY SPRING REPLACED MANUAL ENGAGE SPRING
[L 200 1979 NPRDS OUTPUT ON FAILURES AT BABCOCK & WILCOX FLANTS PAGE 34 EVENT /REPT EQUIPMENTS FACILITY DATES COMP /SYS SEQUENCE #
DESCRIPTION DPCNEE2 750224 VALVEX 2HP-57 VALVE STUCK ON BACKSEAT 7502241200 SFD 764 7482
.770117 Z
FAULTY WOODRUFF KEY IN REACH ARM REPLACED WOODRUFF KEY
'DPCHEE2 750320 VALV0P 2RC-1 VALVE DOES NOT FUNCTION PROPERLY 7503200100 CBD 764 7506 770117 Z
FAULTY MOTOR REPLACED MOTOR DPCNEE2 750806 VALVEX 2RC-67 VALVE LEAKS PAST SEAT 7508061500 CBD 764 7497 760902 Z
INTERNAL PARTS WORN REPLACED BELLOWS ASSEMBLY AND HDZZLE DPCHEE2 751026 PUMPXX 2RC-P2A1 SEALS LEAKING 7510260900 CBD 764 7472 751215 B C THE ORIGINAL TWO SEAL PACK APPARENTLY CAN-NOT WITHSTAND TRANSIENT PRESSURES, THOUGH THEY ARE DESIGNED TO. THERE IS NO APPARENT REASON FOR THE FAILUR".
REPLACING THE TWO SEAL PACK WITH A THREE SEAL PACK SEEMS TO CORRECT THE PROBLEM. NO ONE KNOWS WHY THE THREE SEAL PACK WORKS WHEN THE TWO SEAL PACK DOES NOT.
[L 20, 1979 HPRDS OUTPUT ON FAILURES AT BABCOCK 1 WILCOX PLANTS PAGE 33 EVENT /REPT EQUIPMENT #
?ACILITY DATES COMP /SYS SEQUENCEE DESCRIPTION DPCHEE2 751026 PUMPXX 2RC-P2A2 SEALS LEAKING 7510260900 CBD 764 7474 751215 B C THE ORIGINAL TWO SEAL PACK APPARENTLY CAN-HOT WITHSTAND TRANSIENT PRESSURES, THOUGH THEY ARE DESIGHED TO. THERE IS NO APPARENT REASON FOR THE FAILURE.
REPLACING THE TWO SEAL PACK WITH A THREE SEAL PACK SEEMS TO CORRECT THE PROBLEM. NO ONE KNOWS WHY THE THRE5 SEAL PACK WORKS WHEN THE TWO SEAL PACK DOES NOT.
DPCHEE2 751026 PUMPXX 2RC-P2B1 SEALS LEAKING 7510260900 CBD 764 7476 751215 B C THE ORIGINAL TWO SEAL PACK APPATENTLY CAH-HOT WITHSTAND TRANSIENT PRESSURES, THOUGH I
THEY ARE DESIGHED TO. THERE IS NO APPARENT REASON FOR THE FAILURE.
REPLACING THE TWO SEAL PACK WITH A THREE SEAL PACK SEEMS TO CORRECT THE PROBLEM. NO ONE KNOWS WHY THE THREE SEAL PACK WORKS WHEH THE TWO SEAL PACK DOES HDT.
DPCHEE2 751026 PUMPXX 2RC-P2B2 SEALS LEAKING 7510260900 CBD 764 7478 751215 B C l
THE ORIGINAL TWO SEAL PACK APPARENTLY CAH-l NOT WITHSTAND TRANSIENT PRESSURES. THOUGH THEY ARE DESIGHED TO. THERE IS HO APPARENT REASON FOR THE FAILURE.
REPLACING THE TWO SEAL PACK WITH A THREE SEAL PACK SEEMS TO CORRECT THE PROBLEM. NO ONE KNOWS WHY THE THREE SEAL PACK WORKS WHEN THE TWO SEAL PACK DOES NOT.
DPCHEE2 760126 VALVEX 2LP-17 BREAK RELEASE NOT WORKING 7601260900 SFF 764 7488 760901 l
Z BROKEN ROLL PIN j
REPLACE ROLL PIN l
,_v,a%---v=,---ww=-=m v*T-wwwr-DY'"-=--F"T--ww-wwe--e--=--m--,-+,v,-w--wewww,-=
ew w we --,er www----
-vw w vw e m --ww e- -w -a v-w w--
as e-
UL 20, 1979 HPRDS OUTPUT ON FAILURES AV BABCOCK 1 WILCOX PLANYS PAGE 36 EVENT /REPT EQUIPMENT 8 FACILITY DATES COMP /SYS SEQUEHCES DESCRIPTION DPCHCE2 760127 PUMPXX 2HP-P2A PUMP BASE PLATE LEAKING 7601271130 SFD 764 7468 760901 Z
ABHORMAL WEAR INSTALLED HEAD GASKET, INTAKE AND DISCHARGE GASKETS DPCHEE2 760322 VALVEX 2LP-22 VALVE LEAKINC AROUND STEM AND PACKING 7603221200 SFF 764 7489 760901 Z
NATURAL END OF LIFE 2
REPLACED 51EM, BODY TO BONNET GASKET, AND i
REPACKED DPCNEE2 760408 VALVEX 2LP-5 BODY TO B0HNET LEAK 7604051445 SFF 764 7492 760901 2
NATURAL EN.D OF LIFE 4
REPLACED BODY TO BONNET GASKJT, STUDS, AND REPACKED
' DPCNEE2 760413 VALVEX 2LP-4 VALVE LEAKING PAST SEAT 7604131130 SFF 764 7491 760901 Z
BAD VALVE DISC.HATURAL END OF LIFE.
REPLACED VALVE DISC AND VALVE GASKET 3
L 20, 1979 HPRDS OUTPUT ON FAILURES AT BABCOCK & WILCOX PLANTS PAGE 37 EVENT /REPT EQUIPMENT 8 ACILITY DATES COMP /SYS SEQUENCE 8 DESCRIPTION DPCHEE2 760510 PENETR EMV-2 LEAK ARCUND
'O' RING SEALS
,I 7605101300 SAB 764 7466 760831 CORROSION REPLACED
'O' RING SEALS DPCNEE2 760510 PENETR WMV-2 LEAK AROUNP
'O' RING SEALS 7605101300 SAB 764 74b7 760831 Z
CORROSION REPLACED
'O' RING SEALS DPCHEE2 760513 VALVEX 2HP-286 VALVE LEAKING THROUGH PACKING AND THROUGH 7605130900 SFD 764 7481 VALVE SEAT 760901 Z
NATURAL END OF LIFE REPACKED VALVE AND RELAPPED SEAT DPCNEE2 760610 VALVEX 2HP-120 LEAKING THROUGH THE VALVE SEAT 7606101500 SFD 764 7480 760331 Z
NATURAL END OF LIFE i
INSTALLED HEW GASKETS. PACKING. LAPPED SEAT
UL 20, 1979 NPRDS OUTPUT ON FAILURES AT BABCOCK & WILCOX PLANTS PAGE 38 EVENT /REPT EQUIPMENT 4 FACILITY DATES COMP /SYS SEQUENCES DESCRIPTION DPCNEE2 760708 MOTORX 2HP-P2A PUMP TRIFS CH ATTEMPTS TO START 7607081830 SFD 764 7464 761209 Z
BAD ROTOR DRAWING HIGH STARTING CURRENT CAUSING MOTOR TO TRIP I
REPLACED ROTOR ASSEMBLY DPCHEE2 760920 HTEXCH 2HP-C2B COOLER 2B HAS TUBE LEAK 7609200800 SFD 773C0240 770725 760920 H ABHORMAL W'sR REPLACED COOLER AT HEXT SCHEDULED REFUEL DPCHEE2 761007 VALVEX 2 LWD-1 BROKEN ROLL PIN 7610071200 MAB 764 7493 761209 Z
HATURAL END OF LIFE REPLACED ROLL PIN DPCHEE2 761206 VALVEX 2HP-58 UNABLE TO OPEN VALVE 7612061200 SFD 764 7484 770131 Z
BAD LINKAGE INSTALLED HAHDWHEEL DN REACH ROD AND REPAIRED REACH ROD l
l
[L 20, 1979 HPRDS OUTPUT ON FAILURES AT BABCOCK 1 WILCOX PLANTS PAGE 39 EVENT /REPT EQUIPMENTS PACILITY DATES COMP /SYS SEQUENCES DESCRIPTION
.DPCHEE2 761210 VALVEX 2RC-67 VALVE LEAKS 7612101200 CBD 764 7498 770131 Z-GASKET WORN OUT REPLACED STUDS AND GASKET DPCHEE2 761211 VALVEX 2HP-58 VALVE WOULD HOT OPEN DUE TO A STRIPPED 7612111200 SFD 764 7485 YOKE AND VALVE STEM 770131 Z
ABHORMAL SERVICE CONDITION LAPPED SEAT AND REWORKED HEW WEDGE, TAPPED AND PUT LIQUID METAL ON BODY AND BONNET DPCHEE2 761227 VALVEX 2FDW-31 STUFFING BOX BLOW OFF PLUG LEAKING 7612270800 HHA 773B0034 770712 Z
WELD FAILURE GROUND AND REWELDED PLUG DURING OUTAGE DPCHEE2 770113 VALV0P 2BS-2 VALVE STUCK ON SEAT AND WOULD NOT OPEH 7701131200 SCC 773B0036 MANUALLY 770131 Z
DRIFT IN SET POINT OF LIMIT SWITCH OH VALVE OPERATOR l
RESET LIMIT SWITCH
EL 20, 1979 NPRDS OUTPUT OH FAILURES AT BABCOCK 8 WILCOX PLANTS PAGE 40 EVENT /REPT EQUIPMENTS 7ACILITY DATES COMP /SYS SEQUENCE #
DESCRTPTION DPCHEE2 770131 PENETR RB PER HTCH LIMIT SWITCH OH PERSONNEL HATCH INDICATES 7701312047 SAB 773B0033 OPEN WHEN HATCH IS SHUT 770609 Z
ADJUSTMENT ARM OUT OF ADJUSTMENT READJUSTED ARM AT TOP OF DOOR AND ADJUSTED LINKAGE SWITCH DPCHEE2 770405 VALV0P 2LP-21 LP-21 WILL NOT OPERATE FROM SWITCH IN 7704051600 SFF 773B0037 COHTROL ROOM 770609 Z
LOOSE SET SCREW ADJUSTED PINION GEAR TO MESH WITH GEAR ON LIMITORQUE AND TIGHTENED SET SCREW DPCHEE2 770419 VALVEX 2RC-67 2RC-67 LEAKS PAST SEAT REPLACE 7704191300 CBD 773C0249 770907 Z
UNKNOWN REPLACED WITH IDENTICAL VALVE. S/N BL-8889 DPCHEE2 770419 VALVEX 2RC-68 VALVE 2RC-68 LEAKS PAST SEAT 7704191300 CBD 773C0250 770907 Z
UNKNOWN REPLACED WITH IDENTICAL VALVE. S/N BL8892
NL 20, 1979 HPRDS OUTPUT ON FAILURES AT BABCOCK & WILCOX PLANTS PAGE 41 EVENT /REPT EQUIPMENTS FACILITY DATES COMP /SYS SEQUENCE #
DESCRIPTION i
DPCHEE2 770526 VALVEX 2RC-66 VALVE LEAKS THRU SEAT 7705260800 CBD 773B0035 770725 Z
l ABNORMAL WEAR ON SEAT OF MAIN V1'.VE AND PILOT VALVE REMOVED VALVE, MACHINED SEATS, REPLACED VALV l
E DPCHEE2 770606 VALVEX 2HP-7 VALVE WOULD ONLY STROKE 1/2 IN,SHOULD 7706061550 SFD 773C0247 BE 1 IN
-770817 Z
UNKNOWN STROKED VALVE AND REPACKED DPCHEE2 770609 VALVEX 2RC-2 NO FAILURE MODIFICATION 7706091300 CBD 773C0248 770718 Z
NONE REPLACED VALVE WITH 2.5 IN. TARGET ROCK VALVE S/H2 DPCHEE2 770617 MOTORX 2RBC-2A MOTOR BURNED OUT 7706171345 SBB 773C0241 770817 Z
UNKNOWN l
l REPLACED MOTOR i
I
a.-a a.
[L 20, 1979 HPRDS OUTPUT ON FAILURES AT BABCOCK & WZLCOX PLANTS PAGE 4Z EVENT /REPT EQUIPMENTS PACILITY DATES COMP /SYS SEQUENCE 8 DESCRIPTION DPCHEE2 770617 MOTORX 2RBC-2C MOTOR BURNED OUT 7706171345 SBB 773C0243 770817 Z
UNKHOWN i
REPLACED MOTOR DPCHEE2 770623 VALVEX 2HP-35 VALVE COULD HOT BE RE-ASSEMBLED DUE TO 7706231600 SFD 773C0245 BACK SEAT BEING GAULDED 770725 Z
BACK SEAT GAULDED CUT VALVE OUT AND REPLACED DPCNEE2 770625 VALV0P 2PR-7 VALVE WOULD HOT CLOSE ELECTRICALLY 7706250800 SCB 774B0306 770725 Z
TORQUE SWITCH FAILED TO FUNCTION NORMALLY ADJUSTED TORQUE SWITCH DPCNEE2 770803 VALV0P 2LP-22 VALVE WOULD NOT OPERATE ON ES TEST 7708031300 SFF 773C0254 770817 Z
INSULATION CAUSED MECHANICAL INTERLOCK TO BIND PREVENTING OPEN CONTACTOR FROM OPERATING REMOVED EXCESS INSULATIDH
$L 20, 1979 HPRDS OUTPUT ON FAILURES AT BADCOCK & WILCOX PLANTS PAGE 43 EVENT /REPT EQUIPMENTS FACILITY DATES COMP /SYS SEQUENCES DESCRIPTION DPCHEE2 770804 MOTORX 2RBC-2A MOTOR TRIPS OFF AT HIGH SPEED 7708041915 SBB 773C0242 770817
.Z BREAKER SET TO LOW RESET BREAKER DPCHEE2 770812 VALV0P 2HP-228 VALVE WOULD HOT OPERATE ELECTRICALLY 7708120400 SFD 773C0251 770825 Z
UNKNOWN EXERCISED VALVE MANUALLY DPCHEE2 770814 VALVEX 2HP-285 VALVE HAS CRACKED SEAT 7708141300 SFD 773C0244 770907 Z
UNKNOWH REPLACED STEM, SEAT,AND DIAPHRAM DPCHEE2 770815 CRDRVE DS CONTROL ROD WILL NOT MOVE 7708150315 RLR 774B0297
~l 771006 Z
DEFECTIVE STATOR j
REPLACED STATOR
FL 20, 1979 NPRDS OUTPUT Oh F4ILURES AT BABCOCK & WELCOX PLANTS FLGE 44 EVENT /REPT EQUIPMENTS FACILITY DATES COMP /SYS SEQUENCER DESCRIPTIDH DPCNEE2 770816 CRDRVE E7 CONTROL ROD WILL HOT MOVE 7708161000 RBB 774B0298 771006 Z
DEFECTIVE STATOR k
REPLACED STATOR t
I
.DPCHEE2 770822 VALVEX 2HP-66 VALVE LEAKS, REPLACE 7708221300 SFD 773C0246 770907 Z
ABHORMAL WEAR REPLACED VALVE DPCHEE2 770825 CRDRVE D10 CONTROL ROD WILL NOT MOVE 7708251800 RBB 774B0296 771006 Z
DEFECTIVE STATOR REPLACED STATOR DPCNEE2 770826 VALVEX 2FDW-100 BODY TO BONNET LEAK 7708261600 HHA 782B0135 780110 Z
SEAL RING SCARRED REPLACED SEAL RING AND ADJUSTED PACKING
[L 200 1979 HPRDS OUTPUT ON FAILURES AT BA9 COCK 1 WILCOX PLANTS PAGE 45 EVENT /REPT EQUIPMENTS FACILYTY DATES COMP /SYS SEQUENCE 8 DESCRIPTION DPCNEE2 770830 VALVEX 2HP-120 VALVE DEMAND CHANGES 2% BUT FLOW CHANGES 7708300200 SFD 774A0296 20GPM TD 70GPM CAUSING SWING IN PZR LEVEL, 771004 RCS. PRESSURE,LDST LEVEL,AND RCP SEAL FLOW Z
AIR LEAK AROUND STEM SEAL REPLACED SEAL DPCHEE2 770907 VALV0P 2LP-21 MOTOR STARTED SMOKING DURING VALVE MOVE-7706241500 SFF 773C0253 MENT 770907 Z
UNKNOWN REPLACED MOTOR DPCHEE2 770920 CRDRVE E9 CONTROL ROD WILL HOT MOVE 7709200015 RBB 774B0299 771006 Z
DEFECTIVE STATOR REPLACED STATOR I
DPCHEE2 770922 CRDRVE 07 STATOR FAILED 7709220015 RBB 732B0131 l
771104 Z
UNKNOWN REPLACED STATOR
$L 20, 1979 NPRDS OUTPUT ON FAILURES AT BABCO'4 & WILCOX PLANTS PAGE 06 EVENT /REPT EQUIPMENTS 7ACILITY DATES COMP /SYS SEQUENCER DESCRIPTIDH
'DPCHEE2 770924 CRDRVE H10 STATOR FAILED 7709240030 RBB 774B0300 771104 Z
UNKNOWN b
REPLACED STATOR l
DPCHEE2 771008 VALVEX 2HP-234 HANDWHEEL TURNS FREELY VALVE IS IHOPERABLE 7710081215 SFD 774A0297 771104 Z
YOKE NUT STRIPPED REPLACED HANDWHEEL AND YOKE HUT DPCNEE2 771113 VALVEX 2HP-234 VALVE WILL NOT MANUALLY OPERATE 7711132309 SFD 774B0304 780109 Z
WORN YOKE HUT AND STEM REPLACED YOKE NUT AND STEM DPCHEE2 771230 CRDRVE N12 LOC.
' BAD STATOR DURING INSPECTION 7712301S00 RBB 782B0130 780111 Z
UNKNOWN REPLACED STATOR
[L 20, 1979 HPRDS OUTPUT ON FAILURES AT BABCOCK & WZLCOX PLANTS PAGE 47 EVENT /REPT EQUIPMENT 8 FACILITY DATES COMP /SYS SE1UENCEB DESCRIPTION DPCHEE2 780103 VALV0P 2FDW-36 VALVE WILL NOT OPERATE ELECTRICALLY 7801031110 NHA-783A0336
'780111 Z
MOTOR BURNED OUT REPLACED MOTOR DPCNEE2 780105 CBD LEAK IN STEAM GENERATOR B 7801051135 HTEXCH 782B0128 780215 780215 N UNKNOWN REPAIRED LEAK BY FILLING TUBE AND PLUGGING DPCNEE2 780114 CRDRVE M7 STATOR FAILED TO RESPDHD 7801140800 RBB 782B0129 780215 Z
GROUNDED REPLACED STATOR DPCHEE2 780117 VALVEX 2BS-10 VALVE WILL NOT OPERATE 7801172335 SCC 78230134 780215 Z
DAMAGED RING AND PINION GEARS IN REACH ROD h
REPLACED GEARS wN
[L 20, 1979 NPRDS OUTPUT ON FAILURES AT BABCOCK & MfLCOX PLANTS PAGE 48 EVENT /REPT EQUYPMENV8
@ACZLIlY DATES COMP /SYS SEQUENCE 8 DESCRIPTION DPCHEE2 780215 PUMPXX 2BS-P2A HIGH VIBRATION RECORDED DUR!hu ROUi:9E 7801241400 SCC 782B0133 INSPECTION 780215 Z
BAD MOTOR BEARING i
REPLACED BEARING AND REALIGNED i
DPCNEE2 780409 CBD DURING NORMAL OPERATION 2RC-3 DEVELOPED A 7804090830 VALVEX 782C0138 PACKING LEAK CAUSING UNIT 2 TO BE TAKEN 780504 OUT OF SERVICE 780505 H UNKNOWN VALVE REPACKED DPCNEE2 780409 VALVEX 2RC-3 P.AcKING LEAK 7804090830 CBD 782C0139 780504 780505 H UNKNOWN REPACKED VALVE DPCNEE2 780609 CRDRVE M5 STATOR MS WILL NOT OPERATE 7806091335 RBB 784B0134 781009 780728 H SHORT IN A PHASE REPLACED WITH NEW STATOR
~
[L.0? oft 979' HPRDS OUTPUT ON FAILURES AT BABCOCK &'WILCOX PLANTS PAGE 49' JEVENT/REPT-EQUIPMENTS PACILITY DATES.
COMP /SYS. SEQUENCE #
DE3CRIPTION DPCHEE2 2780619 PUMPXX 2BS-P2B BAD PUMP' BEARING ON RB SPRAY PUMP 2B-7806190100 SCC 784B0135 781009 Z
POSSIBLE ALIGNMENT OR VIBRATION PROBLEM REPLACED WITH SPARE PUMP AND ALIGHED DPCHEE2.780814 PUMPXX 2RC-P2B1 RCP 231 SEAL LEAKOFF FLOW RATE HIGH 7808141120 CBD 784B0136 781006 Z
SEAL LIFE SHORTER THAN EXPECTED REPLACED SEALS DPCNEE2 780814' PUMPXX 2RC-P2B2 RCP 2B2 SEAL LEAKOFF FLOW RATE HIGH 7808141118 CBD 784B0137 781006 Z
SEAL LIFE SHORTER THAN EXPECTED REPLACED SEALS DPCHEE2 780817 CRDRVE G5 STATOR G5 TESTED BAD 7808171600 RBB 784B0132 781009 Z
PHASE SHORT INDICATED REPLACED KITH NEW STATOR-
. i w
-m
n.
..~..-..-. -
.~.
hL20g-.1979.
HPRDS OUTPUT ON FAILURES AT BABCOCK 2-WIlCOX-PLANTS
'PAGEt507 -
EVENT /REPT
-EQUIPMENT 8' 7ACILITY-DATES jCOMP/SYS SEQUENCES.
DESCRIPTION.
DPCHEE2 -780817
-CRDRVE H10 STATOR H10 TESTED BA7 7808170800 RBB-784B0133 781009' Z^
I PHASE GROUND INDICATED
' I
'I REPLACED WITH NEW STATOR l
~!
.DPCNEE - 741220 VALVEX 3HP-120 VALVE LEAKING
.7412201200 SFD 764 7538.
770209 l
Z FAULTY DIAPHRAGM i
i REPLACED DIAPHRAGM 1
iDPCNEE3' 741222 GENERA 3DIA INVERTER SHIFTED FREQUENCY 7412221200 EBG 764 7519 770209 Z
DRIFT IN SET POINT OF FREQUENCY CONTROL RESET FREQUENCY CONTROL 1
- iDPCNEE3 741223
-VALVEX 3HP-259 VALVE LEAKS BEYOND REPAIR 7412231200 SFD 764 7540 770209
.Z UNKNOWN
- i REPLACED VALVE 1-a i
c PAGE 51 0L 20, 1979 HPRDS OUTPUT ON FAILURES AT BABCOCK & WILCOX PLANTS EVENT /REPT EQUIPMENTS FACILITY DATES COMP /SYS SEQUENCE 8 DESCRIPTION
'DPCNEE3 741224 VALV0P 3LP-5 VALVE WILL HDT OPERATE ELECTRICALLY 7412241000 SFF 764 7560 770209 Z
BLOWN FUSE REPLACED FUSE DPCHEE3 741230 VALVEX 3CF-1 BODY TO BONHET LEAK 7412301200 SFE 764 7536 i
770209 Z
CORROSION CLEANED SEAL RING AND SEALING SURFACES DPCHEE3 750106 GENERA 3DIC LOSS OF OUTPUT 7501061200 EBG 764 7520 770208 Z
BAD POWER FUSE l
REPLACED POWER FUSE I
DPCHEE3 750107 VALVEX 3FDW-108 VALVE WILL NOT OPERATE 7501071200 HHA 764 7537 770209 i
l Z
l CORROSION l
l l
DISASSEMBLED, CLEANED, LUBRICATED, AND
'A REASSEMBLED
=4 l
I 1
1
FL 20, 1979 NPRDS OUTPUT ON FAILURES AT DABCOCK & WILCOX PLANTS PAGE 52 EVENT /REPT EQUIPMENT #
FACILITY DATES CCMP/SYS SEQUENCES DESCRIPTION DPCHEE3 750123 VALV0P 3FDW-106 NO OPEN INDICATI0H ON CONTROL ROOM PANEL 7501231200 HHA 764 7553 WHEN VALVE IS OPEN 770210 Z
FAULTY ACTUATOR I
ADJUSTED ACTUATOR DPLNEES 750126 INSTRU NI-8 PR DET CHANNEL TRIPPED SEVERAL TIMES 7501261200 IAB 764 7522 770210 A
POWER RANGE DETECTOR OUT OF ADJUSTMENT ADJUSTED DETECTOR DPCNEE3 750205 VALVEX 3RC-66 VALVE LEAKS PAST SEAT 7502051200 CBD 764 7549 770209 Z
UNKNOWN LAPPED SEAT DPCNEE3 750205 VaLV0P 3LP-13 VALVE WILL NOT OPERATE ELECTRICALLY 7502051200 SFF 764 7559 770209 Z
BLOWN FUSE REPLACED FUSE
~
.~.
(L12 0,1197 9'
,NPRDS OUTPUT ON FAILURES AT BABCOCK.&.WILCOX PLANTS-PAGE 93
' EVENT /REPT.
EQUIPMENTS FACILITY DATES COMP /SYS SEQUENCE #
DESCRIPTION DPCHEE3.750219 VALV0P 3HP-21 VALVE WILL NOT OPEN 7502141200 SFD
.764 7556
'770209.
Z FAULTY PRESSURE SWITCH REPLACED PRESSURE SWITCH DPCHEE3 175C219 VALVEX 3HP-284 VALVE LEAKS 7502191200 SFD 764 7541 770209 Z
LOOSE LEAK-OFF PLUG TIGHTENED PLUG DPCHEE3 750224
. BLOWER 3PR-E3A VENTILATION FAN LEAKS AROUND SUCTION-7502241200 SCB 764 7516 GASKET
~770209 A
RANDOM PLACED RTV SEALANT ON LEAK-DPCHEE3 750321 PEHETR RB PER HTCH~ MECHANICAL INTERLOCK OH PERSONNEL HATCH IS 7503211200 SAB 764 7528 BENT 770208 Z
UNKNOWN - LIKELY OPERATOR ERROR SET LOCKING CAM ON SHAFT TO MESH WITH GEAR
A ML 20, 1979 HPQDS OUTPUT ON FA8 LURES AT BABCOCK & WILCOX PLANTS PAGE 56 4
EVENT /REPT EQ UIF 9E*dT t FACILITY DATES COMP /SYS SEQUC TED DESCRIPTION DPCHEE3 750502 MOTORX 3RC-P3A2 SEAL LEAK 7505021000 CBD 764 7526 770209 Z
UNKNOWN l
REPLACED SEAL AND MODIFIED
'O' RING IN SEAL DPCKEE3 750617 PUMPXX 3RC-P3B1 FAULTY SEALS 7506171500 CBD 764 7534 770216 Z
UNKNOWN REPLACED SEALS DPCHEE3 750621 VALV0P 3HP-26 VALVE WOULD HDT OPERATE ELECTRICALLY 7506210600 SFD 764 7558 770209 Z
CONTACTS LOOSE TIGHTENED CONTACT 3 DPCHEE3 750731 PENETR EMER P HTCH EMERGENCY PERSONNEL HATCH DOOR GASKETS 7507310830 SAB 764 7527 FAULTY 770210 Z
HATURAL END OF LIFE REPLACED GASKETS l
$L120, 1979 NPRDS OUTPUT ON FAILURES AT BABCOCK & WILCOX PLANTS PAGE 55 EVENT /REPT EQUIPMENTS 7ACILITY DATES COMP /SYS SEQUEHCES DESCRIPTION DPCHEE3 750809 PUMPXX 3BS-P3B PUMP L..L LEAKING 7508091005 SCC 764 7532 770209 Z
FAULTY MECHANICAL SEAL REPLACED SEAL DPCHEE3 751012 INSTRU 3RC3A-PT1 ERRONEOUS PRESSURE READING - RPS CHANNEL A 7510120915 IED 774A0299 770216 Z
BAD TRANSMITTER REPLACED TRANSMITTER AND RECALIBRATED DPCHEE3 751012 INSTRU 3RC3B-PT2 ERRONEOUS PRESSURE READING - RPS CHANNEL D 7510120915 IED 774A0300 770216 Z
BAD TRANSMITTER REPLACED TRANSMITTER AND RECALIBRATED DPCHEE3 751019 CRDRVE M3 CONTROL ROD M3 SHCWS API POSITION OF ABOUT 7510192200 RDB 764 7518 93% WITH ROD OUT OF LIMIT LIGHT ON, l
760813 CAUSING ASSEMBLs RCD FAULT ALARM.
Z LOOSE COHHECTI)H OF THE API INPUT SIGNAL TIGHTEHED CONNECTIDH l
l
ML 20 A979 NPRDS OUTPUT ON FAILURES AT BABCOCK & WILCOX PLANTS PAGE 56 l
EVENT /REPT EQUIPMENT 8 FACILITY DATES COMP /SYS -SEQUENCE #
DESCRIPTICH DPCHEE3 751104 INSTRU HP-27 UC CONTROL UNIT DOES NOT FUNCTION PROPERLY IN 7511041210 IBC
.764 7521 THE MANUAL MODE 770211 Z
PUSHBUTTON SWITCH IS STICKINC REPLACED SWITCH f
DPCNEE3 760115 VALVEX 3LP-12 VALVE CANNOT BE OPERATED LOCALLY 7601151500 SFF 764 7542 760817 Z
SHAFT SHEARED OFF FABRICATED SHAFT AND install.ED DPCHEE3 760115 VALVEX 3LP-14 HAHDWHEEL INOPERABLE 7601151500 SFF 764 7543 760817 Z
RATCHET PAW STRIPPED OFF REPAIRED RATCHET PAW AND REPLACED HALF-M00H KEY DPCHEE3 760223 PUMPXX 3RC-P3B1 PUMP SEALS BAD 7602231000 CBD 764 7535 l
760817 Z
HATURAL END OF LIFE l
REPLACED SEALS l
l. _ _ _
1 IL 20, 1979 HPRDS OUTPUT ON FAILURES AT BABCOCK & WILCOX PLANTS PAGE 57 EVENT /REPT EQUIPMENTS 7ACILITY DATES COMP /SYS SEQUENCE #
DESCRIPTION DPCNEE3 760321 VALVEX 3LP-6 VALVE WOULD NOT OPERATE MANUALLY 7603210606 SFF 764 75;4 i
760819 Z
SHAFT THAT ENGAGES FOR MANUAL OPERATION WOULD NOT FUNCTION DUE TO EXCESSIVE WEAR REPLACED SHAFT DPCHEE3 760405 PENETR WD-3 LEAKING SF6 GAS 7604050830 SAB 764 7531 760819 Z
UNKNOWN REPLACED PENETRATION DPCHEE3 760428 PUMPXX 3HP-P3C PUMP SHAFT SEALS LEAKING 7604281005 SFD 764 7533 761026 Z
NATURAL END OF LIFE REPLACED SEALS l
l DPCNEE3 760719 VALV0P 3HP-24 VALVE IHOPERABLE - WILL NOT OPEN 7607191440 SFD 764 7557 760813 Z
LIMIT SWITCH DUT OF ADJUSTMENT i
l l
ADJUSTED LIMIT SWITCH l
l 1
~
~
DL 20, 1979 HPRDS OUTPUT ON FAYLURES AT BABCOCK & WILCOX PLANTS PAGE 53 I
EVENT /REPT EQUIPMENT #
FACILITY DATES COMP /SYS SEQUENCES DESCRIPTION DPCHEE3 760720 VALVEX 3RC-66 VALVE LEAKING PAST SEAT 7607202230 CBD 764 7550 761214 Z
VALVE SEAT WORN BADLY i
REMOVED VALVE, REPAIRED VALVE SEAT, AND REPLACED VALVE DPCHEE3 760730 VALVEX 3RC-67 LEAKIN3 PAST VALVE SEAT 7607302230 CBD 764 7551 761214 Z
VALVE SEAT WORN BADLY REMOVED VALVE, REPAIkED VALVE SEAT, AND REPLACED VALVE DPCHEE3 760730 VALVEX 3RC-68 LEAKING PAST VALVE SEAT 7607302230 CBD 764 7552 761214 Z
VALVE SEAT WORN BADLY REMOVED VALVE, REPAIRED VALVE SEAT, AND REPLACED VALVE DPCNEE3 760822 VALV0P 3FDW-108 VALVE OPERATOR WILL NOT CLOSE WITH A 7608221130 HHA 764 7554 SYSTEM PRESSURE OF 920 LB. ON IT 761027 Z
l BAD SPRING REPLACED SPRING l
l
$L 20, 1979 NPRDS OUTPUT ON FAILURES AT BADCOCK 1 WILCOX PLANTS PAGE 59 EVENT /REPT EQUIPMENT 8 7ACILITY DATES COMP /SYS SEQUENCE #
DESCRIPTION DPCHEE3 760913 VALVEX 3RC-24 PLUG AND PACKING LEAK 7609181200 CBD 764 7548 1
761027 Z
CYCLIC FATIGUE REPLACED STEM, BACKSEAT ASSEMBLY, YOKE BUSHING, DISC, AND PLUG AND REPACKED VALVE DPCHEE3 760930 VALV0P 3FDW-108 VALVE OPERATED SPURIOUSLY 7609301200 HHA 764 7555 l
761027
)
Z BAD SOLEHOID IN OPERATOR REPLACED SOLEN 0ID DPCNEE3 761005 VALVEX 3PR-1 VALVE LEAKING PAST SEAT 7610051200 SCB 764 7546 761027 Z
VALVE SEAT DRIED OUT AND OUT OF ADJUSTMENT LUBRICATED AND ADJUSTED VALVE SEAT DPCHEE3 761005 VALVEX 3PR-2 VALVE LEAKING PAST SEAT 7610051200 SCB 764 7547 761027 Z
VALVE SEAT DRIED OUT AND OUT OF ADJUSTMENT LUBRICATED AND ADJUSTED VALVE SEAT l
l l
l
EL)20, 1979 NPRDS. OUTPUT ON FAILURES AT BABCOCK & WILCOX PLANTS.
PAGE 60 EVENT /REPT
!EQUIPMENTt.
7ACILITY_ DATES COMP /SYS SEQUENCES DESCRIPTION DPCHEE3 '761006 VALVEX 3 LWD-1 VALVE LEAKING PAST SEAT 7610061200 MAB 764 7545 761027 Z-BAD DIAPHRAGM i
REPLACED DIAPHRAGM DPCNEE3 761014
-PENETR RB PER HTCH PERSONNEL HATCN INTERLOCKS OUT OF
~7610141200 ~SAB 764 7529 ADJUSTMENT
'761027-Z CYCLIC FATIGUE CAUSING ADJUSTMENT PROBLEM ADJUSTED INTERLOCKS DPCHEE3 761020 PENETR RB PER HTCH PERSONNEL HATCH INTERLOCKS OUT OF 7610201200 SAB 764 7530 ADJUSTMENT 761101 Z
OUT OF ADJUSTMENT ADJUSTED INTERLOCKS DPCNEE3-761020 VALV0P 3PR-1 VALVE WILL NOT OPERATE ON DEMAND 7610201200 SCB 764 7561 761130 Z
FAULTY MOTOR IN VALVE OPERATOR REPLACED MOTOR l
l c-
FL 206 1979 HPRDS OUTPUT ON' FAILURES AT BABCDCK & WILCOX PLANTS
~ PAGE 61~
)
EVENT /REPT EQUIPMENTS 7ACILITY ' DATES-COMP /SYS SEQUENCES DESCRIPTION DPCHEE3 761026 VALV0P.3RC-5 VALVE OPERATOR MOTOR SHORTED TO GROUND 7610261200 CBD 764 7562 761130
'-Z BARE PLACE CH MOTOR LEAD TAPED BARE PLACE DPCNEE3 761111 CRDRVE H10 ROD H10 DROPPED TO THE BOTTOM OF THE CORE' 7611111200' RDB 764 7517 761130 Z
BAD STATOR REPLACED STATOR DPCNEE3 761121 VALVEX 3FDW-108 VALVE WILL NOT OPERATE FROM CONTROL ROOM 7611211200 HHA 773B0047 SWITCH - CANHOT CLOSE 770405 Z
PACKING WAS TOO TIGHT AND HAD THE VALVE STEM IN A BIND NOT ALLOWING IT TO TRAVEL COMPLETELY CLOSED REPACKED VALVE PROPERLY DPCHEE3 761206 INSTRU 3RC14A-DPT4 RPS' CHANNEL D TOTAL FLOW DOES NOT AGREE 7612061200 IED 764 7525 WITHIN 4.8 MILLION t/HR WITH CHANNELS A, 770128 B, AND C.
Z FAULTY EAJON-FITTING GASKET l'
REPLACED GASKET AND RECALIBRATED l
t I
i
f UL 20, 1979 HPRDS OUTPUT ON FAILURES AT BABCOCK & WILCOX PLANTS PAGE 62~
EVENT /REPT EQUIPMENT 8 FACILITY. -DATES COMP /SYS SEQUENCES DESCRIPTION DPCNEE3 761212 VALVEX 3NP-120 VALVE DOES NOT OPERATE ON DEMAND 7612121200 SFD 764 7539 770128 Z
DIAPNRAGM IN VALVE OPERATOR LEAKS - VALVE AND VALVE OPERATOR ARE A SINGLE UNIT
^
REPLACED DIAPHRAGM DPCHEE3 770216 CRDRVE F2 CONTROL ROD DRIVE MOTOR TUBE F2 ON REACTOR 7702161500 RBB 773B0039 SERVICE CLCSURE NEAD LEAKS 770405 Z
NATUP.AL END OF LIFE REPLACED"0" RINGS, VENT VALVE ASSEMBLY,AND CLOSURE INSERT ASSEM3LY.
DPCHEE3 770219 VALVEX 3NP-236 VALVE STEM BROKEN 7702191900 SFD 773B0049 770405 Z
UNKNOWN -BROKEN VALVE STEM REPLACED VALVE STEM, SPRING,AND DISC DPCNEE3. 770302 PEN 5TR RB PER HTCH PERSONNEL LOCK INNER DOOR EQUILIZER VALVE 7703021430 SAB 774A0301 NOT WORKING PROPERLY 770414 Z
OUT OF ADJUSTMENT ADJUSTED VALVE l
UL 20, 1979 NPRDS OUTPUT ON FAILURES AT BADCOCK & WILCOX PLANTS PAGE 63-EVENT /REPT EQUIPMENTS FACILITY DATES COMP /SYS SEQUENCE #
DESCRIPTION DPCHEE3 770610 VALVEX 3RC-19 VALVE LEAKS BY SEAT 7706102330 CBD 774B0317 780110 Z
WORD DISC l
REPLACED DISC Al.) REPACKED DPCHEE3 770624 PUMPXX 3LP-P1A MECHANICAL SEAL LEAKING 7706240400 SFF 783A0338 770725 Z
ABNORMAL WEAR OF SEAL REPLACED SHAFT SLEEVE. SEAL GLAND,AND GASKET DPCHEE3 770715 VALVEX 3RC-43 REPACK RC-43, VALVE LEAKS PAST SEAT 7707150500 CBD 77?"0259 770907 Z
CRACKED SEAT REPACKED VALVE AND SCHEDULED TO REPLACE DURING OUTAGE DPCNEE3 770720 HTEXCH 3RC-H3B TUBES ONE AND TWO ROW SEVENTY-SEVEN LEAK f
7707201100 CBD 77430310 l
7708*5 l
770728 H i
UNKNOWN PLUGGED TUBES e
- - ~
UL 20, 1979 NPRDS OUTPUT ON FAZLURES AT DABCOCK & WILCOX PLANTS PAGE 64 EVENT /REPT EQUIPMENTS FACILITY DATES CCMP/SYS SEQUENCES DESCRIPTION DPCHEE3 770807 VALVEX 3PR-2 VALVE WILL NOT OPEN 7708071525 SCB 773C0258 770817 Z
RUPTURED DIAPHRAGM REPLACED DIAPHRAGM DPCHEE3 770820 CRDRVE G9 CONTROL ROD WILL NOT MOVE 7708201430 RBB 774A0298 771006 Z
DEFECTIVE STATOR REPLACED STATOR DPCHEE3 771011 VALV0P 3LP-21 VALVE WILL NOT CLOSE ELECTRICALLY 7710111048 SFF 774B0323 771104 Z
TORQUE SWITCH SET TO LOW RESET TORQUE SWITCH DPCHEE3 771023 VALVEX 3CF-15 VALVE BLOWS BY 7710231600 SFE 774B0314 780110 Z
DRIFT IN SET PRESSUP.E REMOVED VALVE, SET PRESSURE, REINSTALLED
- )
EL 20, 1979-HPRDS OUTPUT-ON FAILURES AT BABCOCK' & WILCOX PLANTS PAGE 65
~
EVENT /REPT
.E002PMENTS TACILITY DATES' COMP /SYS SEQUENCES DESCRIPTION DPCNEE3 771024
'VALV0P 3HP-4 VALVE WILL NOT OPEN 7710241400 SFD 774B0322 771104 Z
CONTACTS CORRODED' CLEANED CONTACTS DPCHEE3 771114 ~
VALV0P.'3HP-26 VALVE WILL NCT CLOSE ELECTRICALLY 7711141400 SFD-774B0320 780110 Z
B.'C FINGERS NOT OPENING ADJUSTED CONTACTS f
DPCNEE3' 771116 VALV0P 3BS-2 UNABLE TO CYCLE VALVE 7711161600 SCC 774B0319 780110 Z
GEARS WORN REBUILT GEAR MECHANISM DPCHEE3 771122 VALVEX 3HP-120 VALVE WILL NOT SEAT 7711221145 SFD 78280144 780215.
Z WORN STEM AND DISC
'l REPLACED STEM AND SEAT
L 20, 1979' HPRDS OUTPUT ON FAILURES AT BADCOCK & WILCOX PLANTS PAGE 66' EVENT /REPT EQUIPMENT #
FACILITY DATES COMP /SYS SEQUENCE #
DESCRIPTIDH DPCHEE3 771122 VALVG? 3HP-26 HO CONTROL ROOM POWER TO OPERATE 7711220200 SFD 77KB0321 780110 Z
WIRES BURHED I
RECOHHECTED WIRES DPCHEE3 771201 INSTRu HI-5 PR DET CHAHHEL A TRIPPED AT 6X10-8 7712010030 IAB 774B0311 780111 Z
BAD DETECTOR REPLACED DETECTOR WITH LIKE 3/N WL-23636-B DPCHEE3 771228 VALVEX 3LP-12 VALVE WILL HOT OPERATE MANUALLY 7712281400 SFF 774B0315 780111 Z
ENGAGEMENT LEVER BROKEN REP. IRED LEVER DPCNEE3 771228 VALVEX 3LP-14 VALVE WILL NOT OPERATE 7712281400 SFF 774B0316 780111 Z
LOOSE SETSCREWS CH HAHDWHEEL l
TIGHTEN SET SCREWS ON HAHDWHEEL
FL 20, 1979 NPRDS OUTPUT OH FAILURES AT BABCOCK & WILCOX PLANTS PAGE 67 EVENT /REPT EQUIPMENTS FACILITY DATES COMP /SYS SEQUENCES DESCRIPTIDH DPCNEE3 780113 VALVEX 3CF-1 VALVE HAS A BODY TO BONNET LEAK 1
7801130948 SFE 782B0142
[
780215 Z
HAD WORN SEAL RING REPLACED SEAL RING DPCNEE3 780119 VAL 7EX 3HP-154 VALVE LEAKS BY SEAT 7801190900 SFD 78280145 780215 Z
USING VALVE AS A THROTTLE VALVE LAPPED SEAT REPLACED INTERNALS DPCNEE3 780120 VALVEX 3CF-8 VALVE LEAKS PAST SEAT 7801201615 SFE 782B0143 780215 Z
WORN DISC AND SPRING REPLACED SPRING AND DISC l
lDPCHEE3 780202 VALV0P 3PR-9 VALVE WILL HOT CLOSE ELECTRICALLY l
7802021100 SCB 782B0148 780215 780223 H DEFECTIVE, TORQUE SWITCH IN OPERATOR REPLACED TORQUE SWITCH 1
l
UL 20, 1979 NPRDS OUTPUT CH FAILURES AT BABCOCK & WILCOX PLANTS PAGE 68 EVENT /REPT EQUIPMENTS FACILITY DATES COMP /SYS SEQUENCE #
DESCRIPTION DPCHEE3 780210 CRDRVE N12 STATOR FAILED 7802100830 RBB 782C0140 780504 2
UNKNOWN REPLACED STATOR DPCHEE3 780620 VALVEX 3HP-234 NANDWNEEL SPINS ON STEM 7806200900 SFD 783A0339 780711 Z
YOKE NUT BROKEN REPLACED YOKE NUT DPCHEE3 780706 VALV0P 3LP-21 3LP-21 OPERATOR HOT FUNCTIONING PROPERLY 7807061730 SFF 784B0142 781009 Z
OPERATOR STEM NUT THREADS STRIPPED REPLACED OPERATOR STEM HUT DPCNEE3 780822 VALVEX 3LPSW-24 VALVE WOULD HOT OPERATE TO CLOSE POSITION 7808221226 WAB 78430140 781006 780919 H BAD TORQUE SWITCH TORQUE SWITCH WAS REPLACED i
DLi20,f1979 HPRDS OUTPUT ON FAILURES' AT BABCOCK & WILCOX PLANTS PAGE 69
-EVENT /REPT.
, EQUIPMENTS FACILITY-DATES-
' COMP /SYS SEQUENCES DESCRIPTION
~
DPCHEE3 780823 VALVEX 3LPSW-21 VALVE IN INTERMEDIATE POSITION-
" 7808230855.WAB 784B0139
'781006 780919 H POSITION INDICATOR' SLIPPED
. ADJUSTED VALVE POSITION INDICATOR FPCCRP3' 770313 MOTORX MSV-55 VALVE IS HORMALLY CLOSED. DURING FUNCTION-7802091200 -HBA 782B0153
.AL TEST, VALVE WOULD HOT OPEN.
780406 Z
VALVE MOTOR WOULD HOT FUNCTIDH DUE TO A FAULTY ROTOR REPLACED ROTOR ASSEMBLY FPCCRP3 770323 CRDRVE 000M-C?*
DURING HORMAL ST, TUP AFTER MANUAL RX 7703231425 RBB 772 2076 TRIP, CONTROL R0r,WOULD NOT RESPOND TO 770509 OUT COMMAND D E MEGGERED STATOR, A SHORT FROM PHASE TO GROUND WAS DISCOVERED REPLACED FAULTY STATOR, RX IN MODE 3, HOT STANDBY FPCCRP3 770404 CRDRVE CRDM-C59 WHILE PERFORMING POWER TESTING OSCILLATION 7704041055 RBB 772 2077 CONTROL ROD WAS-FOUND TO BE INOPERABLE.
770509 RX.-POWER AT : 45 % AT TIME D E MEGGERED STATOR, A SHORT FROM PHASE TO GROUND-WAS DISCOVERED RX BROUGHT DOWN TO HOT STANDBY, STATOR REPLACED BY PLANT PERSONNEL.
l I
UL 20, 1979 INFRDS.0UTPUT OH FAILURES AT BABCOCK 4 WILCOX FLANTS
.PAGE 701
. EVENT /REPT.
LEQUIPMENTS FACILITY-DATES
- COMP /SYS SEQUENCE #
, DESCRIPTION FPCCRP3 770407 CRDRVE ' A07-CRDM.
WHILE PERFORMING BALANCE CORRECTION AT 7704072300 RBB 772 2075 HORMAL. POWER OPERATION,APSR'S BECAME 770509 IHOPERABLE DUE TO PI MALFUNCTION OF ROD 5
-D E
RX POWER AT 92 %.
ALL PI CABLING.AND CONNECTIONS CHECKED,-
ALL HORMAL,. CONCLUDED PI TUBE WAS DEFECTIV E
RX BROUGHT TO MODE 3, HOT STANDBY, PI TUBE
- REPLACED WITH SPARE, PROBLEM WAS CORRECTED.
FPCCRP3 770426 INSTRU SP-1B-LR DURING HORMAL OPERATION IT WAS HOTED THAT 7704261200 HBA 772 2079 A8B STEAM GEHERATOR OPERATING LEVEL 770606 RECORDEF.S DID HOT AGREE WITHIH 2 Z
BOTH INSTRUMENTS WERE CHECKED, SP-1B-LR HAD A BAD POWER SUPPLY FILTER CAPACITOR REPLACED DEFECTIVE PART AND.RECALIBRATED FPCCRP3 770503
'VALVEX RCV-8 VALVE APPEARED TO BE LIFTING AND 7705031200 CBD 772 2080 RESEATING AT 2155 PSIG 770607 D G VALVE REMOVED,SENT TO LAB FOR REPAIR.
THE DISC AND N0ZZEL SEAT.WERE SCORED IN FIVE PLACES.
REBUILT VALVE WITH HEW PARTS AND RE-SET l
LIFT PRESSURE FPCCRP3 770513 INSTRU MU-14-LR WHILE RECORDING HORMAL LEVEL IN MAKE-UP 7705131200 PCB 773A0118 TAHK, CHART ADVANCE FAILED
-770711 Z
BOSS ON TAKE-UP REEL THAT ENGAGES CHART ROLL BROKE OFF.
BUILT UP A BOSS ON TAKE UP REEL WITH SOLDER.
I
FL 20, 1979 NPRDS OUTPUT GN FAILURES AT BABC0cK & WILCOX PLANTS PAGE 71 EVENT /REPT EQUIPMENTS l
7ACILITY DATES COMP /SYS SEQUENCES DESCRIPTION l
I FPCCRP3 770517 CRDRVE A02-CRDM DURING PERFORMANCE OF PREVENATIVE MAINTENA 7705170700 RBB 773A0114 NCE ON CONTROL ROD DRIVE SYSTEM STATOR 770711 FAILED ELECTRICAL TEST.
RX POWER 0 %
l B D MODE 5 STATOR SHORTED TO GROUND ON ONE PNASE REPLACED STATOR DURING OUTAGE FPCCRP3 770517 CRDRVE CRDM-C03 DURING PERFORMANCE OF PREVENATIVE MAINTENA 7705170700 RBB 773A0115 NCE ON CONTROL LCD DRIVE SYSTEM STATOR 770711 FAILED ELECTRICAL TEST.
RX POWER 0%
B D MODE 5 STATOR SHORTED TO GROUND OH ONE PNASE I
REPLACED STATOR DURING SAME OUTAGE FPCCRP3 770517 CRDRVE CRDM-C09 DURING PERFORMANCE OF PREVENATIVE MAIN.
7705170700 RBB 773A0116 DN CONTROL ROD DRIVE SYSTEM STATOR FAILED 770711 ELECTRICAL TEST.
RX POWER AT 0 %
B D MODE 5 STATOR SHORTED TO GROUND ON ONE PNASE REPLACED STATOR DURING SAME OUTAGE FPCCRP3 770517 CRDRVE CRDM-C22 DURING PERFORMANCE OF PREVENATIVE MAINTENA 7705170700 RBB 773A0117 NCE ON CONTROL ROD DRIVE SYSTEM STATOR 770711 FAILED ELECTRICAL TEST RX POWER 0 %
B D MorE 5 STATOR SHORTED TO GROUND ON ONE PNASE REPLACED STATOR DURING OUTAGE I
I,
UL 20011979-HPRDS OUTPUT'ON FATLURES AT BABCOCK & W8tCOX PLANTS PAGEU721 s
J EVENT /REPT ~
EQUIPMENTt; FACILITY DATES COMP /SYS; SEQUENCES DESCRIPTION.
FPCCRP3-770530 VALVEX' ASV-50 DURING HORMAL START OF. EMERGENCY FEEDWATER 7705301800 "NNB 773A0119 PUMP, ASV-50 FAILED TO OPEN 770711' Z
BROKEN STEM AND RUST PREVENTED VALVE FROM OPERATING VALVE'WAS DISASSEMBLED AND CLEAF6D, STEM WAS WELDED AND REPLACED IN VALVE. VALVE FUNCTIONED PROPERLY.
.FPCCRP3 770624 CRDRVE CRDM-C42 DURING NORMAL POWER OPERATICH ROD 6 0F 771108-
~RBB 774A0309 GROUP 2 ABSOLUTE POSITION INDICATOR 7706241200 JUMPED AT ABOUT 5% AND 10 % WHILE B D WITHDRAWING GROUP UNKNOWN REPLACED PI TUBE DURING SCHEDULED OUTAGE FPCCRP3 770627 CRDRVE CRDM-C36 ROD 6 0F GROUP 1 FELL INTO CORE DURING 7706271200 RBB 774A0307 POWER OPERATION WITHOUT COMMAND 771108 B'D' SHORTED WINDING ON STATOR REPLACED PI TUBE AND STATOR DURING SCHEDULED OUTAGE FPCCRP3 ~770630 CRDRVE A02-CRDM DURING NORMAL POWER OPERATION 7706301200 RBB 774A0303 ABSOLUTE POSITION INDICATOR FOR ROD 1 771108 GROUP 8 DROPPED TO ZERD B D UNKNOWN REPLACED PI TUBE DURING SCHEDULED OUTAGE l
l 1
FL 20e 1979 NPRDS OUTPUT OH FAILURES [AT BABC0CK & W3LCOX PLANTS' PAGE 73 EVENT /REPT EQUIPMENTS I'
7ACILITY-1 DATES:
COMP /SYS-SEQUENCE #1 ~
DESCRIPTION d
Dl FPCCRP3 770703' V'ALVEX L FWV-163 VALVE IS NORMALLY CLOSED. VALVE WAS 17707031203-HHA 773C0264 OBSERVED LEAKING THRU SEAT AND AROUND 770914 B0HHET BOLTS z.
1 AFTER REMOVAL OF VALVE, SEAT WAS DISCOVERED i
PITTED,AND BONNET GASKET BAD 1
RELAPPED SEAT AHD. INSTALLED HEW BOMMET l
GASKET FPCCRP3 '77d717-CRDRVE A07-CRDM DURING HORMAL POWER OPERATION CRDM 7707171200 RBB 774A0304 APPEARED TO HAVE PI PROBLEM AND ROD l
771108 MOVED SLOWER THAN REST OF GROUP 8 j
A-D.
STATOR HAD SHORTED WINDINGS 3
l REPLACED STATOR DURING PLANT GUTAGE FPCCRP3 770718-CRDRVE CRDM-C25 ABSt_UTE INDICATOR ON GROUPE 7 ROD 2 7707181200 RBB 774A0305 NOT MOVING AS FAST AS REST OF GROUP 771108 WHEN PULLING FROM 0 POSITION B
-D UHKNOWN REPLACED PI TUBE DURING SCHEDULED OUTAGE FPCCRP3 770720 INSTRU DH-10-TTS DURING NORMAL PLANT OPERATION TEMPERATURE 7707201200 CFC 774B0325 SWITCH WAS NOT WORKING. HEATER ON BWST 780104 WAS ON WHEN TEMP OF TANK WAS 12 DEG Z
HIGHER THAN SET POINT OF SWITCH.
A BAD RELAY WAS FOUND IN SWITCH REPLACED DEFECTIVE RELAY AND RECALIBRATED l
i d
74-EVENT /REPT EQUIPMENTS FACILITY DATES COMP /SYS SEQUENCES DESCRIPTION FPCCRP3 770728 VALVEX MSV-25 DURING NORMAL OPERATION, STEAM WAS 7707281200 NBA 774A0310 NOTICED ESCAPING THRU ATMOSPHERIC 771107 DUMP VENTS, INDICATING SEAT LEAK Z
SEAT LEAK ON val *!"
EdAT VALVE WAS DISASSEMBLED LURING OUTAGE, SEAT WAS LAPPED AND NEW GASKETS INSTALLED.
FPCCRP3 770728 VALVEX MSV-26 DURING NORMAL OPERATION, STEAM WAS 7707281200 NBA 774A0311 NOTICED ESCAPING THRU ATMOSPHERIC 771107 DUMP VENTS, INDICATING SEAT LEAK Z
SEAT LEAK ON VALVE VALVE WAS DISASSEMBLED DURING OUTAGE, SEAI WAS LAPPED AND NEW GASKETS INSTALLED FPCCRP3 770805 VALVEX MUV-18 SEAL RING CUT BY HI PRESSURE, CAUSING 7708051200 PCB 773C0265 EXCESSIVE VALVE LEAKAGE.
770914 B D F#ILURE OF SEAL RING TO CONTAIN SYSTEM PRESSURE SEAL WELDED BONNET OH VALVE. LEAKAGE CONTAINED FPCCRP3 770815 VALV0P DNV-4 DURING COOL DOWN FOR MAINTENANCE DNV-4 7708151200 CFC 773C0266 COULD NOT BE OPENED FROM CONTROL ROOM OR 770914 AT LOCAL STATION l
Z L
AFTER QUICK INSPECTION BY PLANT ELECTRICAN A BROKEN WIRE WAS DISCOVERED IN OPERATOR.
REPAIRED BROKEN WIRE AND OPERATOR PERFORM ED PROPERLY.
l l
l l
l
~
l
$L 20, 1979 HPRDS OUTPUT ON FAILURES AT BABCOCK 8 WILCOX PLANTS PAGE 75 EVENT /REPT EQUIPMENT 8 FACILITY
-DATES COMP /SYS SEQUENCE 8 DESCRIPTION FPCCRP3 770817 INSTRU DH-002-TE1 INCORRECT READING WAS OBSERVED BY 7708171200 CFC 773CO261 OPERATIONS WHILE RX PLANT SHUTDOWN AND 770914 DELAY HEAT SYSTEM IN SERVICE Z
ELEMENT WAS FOUND TO BE BAD IN RTD BY PLANT INSTRU. TECH.
REPLACED FAULTY ELEMENT WITH SPARE,RETURNE D COMP 0HET TO SERVICE FPCCRP3 770818 INSTRU RP-A39 RPS SYSTEM WAS OUT OF SERVICE FOR A 7708181200 IBB 773C0263 MODIFICATION. WHEN CHANNEL WAS ENERGIZED 770914 MODULE FAILED Z
FAILURE OF PRINTED CIRCUIT BOARD.
CALIBRATED SPARE MODULE AND INSTALLED IN SYSTEM FPCCRP3 770823 INSTRU MU-27-FI DURING YEARLY CALIB FLOW INDICATOR 7708271200 PCB 773C0262 WAS INDICATING 40 % WITH NO MAKE-UP 770914 PUMP RUNNING Z
A BAD METER MOVEMrHT WAS DISCOVERED IN INDICATOR REPLACED METER MOVEMENT WITH SPARE I
AND RECALIBRATED STRING
.j (FPCCRP3 770824 CRDRVE CRDM-C40 OURING PLANT STARTUP ROD 3 GROUP 3 7708241200 RBS 774A0308 GAVE A FAULTY POSITION INDICATION 771108 B D UNKNOWN REPLACED PI TUBE, RESUMED START-UP, GROUP 3 ROD 3 WAS NORMAL
UL,20, 1979 NPRDS OUTPUT ON FAILURES AT BABCOCK 1 WZLCOX PLANTS PAGE 76 EVENT /REPT EQUZPMENTS FACILITY.
DATES COMP /SYS SEQUENCE #
DESCRIPTION FPCCRP3 770825 INSTRU NI-003-C5 DURING PERFORMANCE OF SURVEILLANCE 7708251200 IBB 774B0327 PROCEDURE, MODULE WAS FOUND TO BE OUT 780103 0F TOLERANCE.
RX POWER 0 PERCENT B
CALIBRATION RESISTOR WAS FOUND TO BE BAD REPLACED COMPLETE MODULE AND CALIBRATED FPCCRP3 770825 INSTRU NI-004-D5 DURING PERFORMANCE OF SURVEILLANCE 7708251200 IBB 774B0328 PROCEDURE MODULE WAS FOUND TO BE OUT 780103 0F TOLERANCE.
RX POWER AT 0 PERCENT B
RAMP GENERATOR CARD FOUND BAD REPLACED RAMP GENERATOR CARD AND RE0ALIBRA TED MODULE.
FPCCRP3 770825 INSTRU HI-004-D9 DURING PERFORMANCE OF SURVEILLANCE 7708251200 IBB 774B0329 PROCEDURE F. A T E OF CHANGE AMPLIFIER 770103 WAS FOUMD O'JT OF TOLERANCE.
B RX POWER 0 PERCENT UNKNOWN REPLACED COMPLETE MODULE AND RECALIBRATE D
FPCCRP3 770912 VALVEX MUV-27 DURING POWER OPERATION VALVE WAS 7709121200 PCB 774A0312 DISCOVERED LEAKING EXCESSIVELY FROM 771107 SEAL RING D B UNKNOWN SEAL RING WELDED UP, VALVE WAS STROKED OPEN AND CLOSED AND VISUAL EXAM SHOWED NO LEAKAGE UNDER SYSTEM PRESSURE
,_z, UL{20,1 1979;
.HPRDS'0UTPUT,0N FAILURES AT' BABCOCK & WILCOX PLANYS LPAGE 77
~
EVENT /REPT EQUIPMENTS FACILITY ~ -DATES-COMP /SYS SEQUENCE 8
. DESCRIPTION FPCCRP3' 770919 LINSTRU MU-22-PI2-
- NEEDLE ON' PRESSURE INDICATOR WAS GIVEN 7709191200 PCB
-774B0326 FALSE RESPONSE
-780103 RX POWER 100 PERCENT
.B HEEDLE WORN OUT PURCHASED NEW GAGE, CALIBRATED AND INSTALLED GAGE.
FPCCRP3 771001 INSTRU RC-14B-DPT2 DURING HORMAL POWER OPERATION CHAHHEL 7710010321 CBD 774B0330 B 0F REACTOR PROTECTIDH SYSTEM TRIPPED OH LOW FLOW.
RX POWER AT 100 PERCENT
- 780103
-B A BAD AMPLIFIER ASSY WAS FOUND IH DIFF. PRESSURE TRANSMITTER t
REPLACED BAD AMPLIFIER ASSY. WITH SPARE.
CALIBRATED STRING AND RETURNED TO SERVICE.
FPCCRP3 771020 INSTRU SP-008B-PT2 DURING HORMAL PLANT OPERATION DIFF.
7710201200 HHA 774B0331 PRESS TRANSMITTER STARTED GIVING 780104 BAD IMPUT TO COMPUTER.
RX POWER B
AT 100 PERCENT BROKEN BELLOWS ON TRANSMITTER R PLACED BELLOWS WITH SPARE AND RECALIBRATED FPCCRP3 771213 MOTORX DHV-42 VALVE WOULD NOT OPEN 7712131200 CFC 78280152 780406 Z
CRACKED ROTOR REPLACED ROTOR 1
UL 20, 1979 NPRDS OUTPUT ON FAILURES AT BABCOCK'& WILCOX PLANTS,
.PAGE 78-EVENT /REPT-EQUIPMENT #
FACILITY DATES COMP /SYS. SEQUENCE #
DESCRIPTION FPCCRP31780206 INSTRU SP-12A-DPT INPUT FOR INTEGRATED CONTROL SYSTEM FOR
-7802061200 HHA 782B0151 FEEDWATER BYPASS VALVE WAS ERR 0NEOUS.
780406 Z
SP-12A 2PT HAD A. BAD CURRENT. BUFFER q
REPLACED CURRENT BUFFER FPCCRP3 780215 RELAYX ES-4A-AS DURING TESTING OF ENGINEERED SAFEGUARDS 7802151200 IBC
'782B0154 TEST BLOCK LOADING SEQUENCE,HORMAL ACTUA-780407 TION INDICATING IIGHT WOULD HOT LIGHT E
RELAY ES-4A-AS WAS DISCOVERED TO HAVE BAD CONTACT ALIGNMENT.
REPLACED RELAY SYSTEM FUNCTIDHED NORMALLY.
FPCCRP3 780414 GENERA DP-INVTR-3A INVERTER 3A HAS HISTORY OF UNEXPLAINABLE
.7804141200 ECD 784B0166 TRIPS.
781121 B -D UHKHOMN MODIFICATION TO CIRCUIT DESIGN WAS INIT-IATED (MAR #78-7-4L TO INCREASE INVERTER RELIABILITY. INVERTER IS PRESENTLY PERFORM-ING-SATISFACTORY. TEST SAT PER TP78-7-4.
FPCCRP3 780422 VALV0P AHV-1D UPON INITIATING REACTOR BUILDING PURGE, 7804220800 SCB 783B0076 AHV-1D WOULD NOT OPEN.
780815 Z
AHV-1D VALVE OPERATOR WAS LEAKING AIR REBUILT VALVE.SOLEHOID WITH ASCO REPAIR KIT 8103-863. VALVE THEN FUNCTIONED PROPERLY t
_~
~
.UL 20, 1979 HPRDS OUTPUT OH FAILURES AT BABCOCK & WILCOX PLANTS PAGE 79 EVENT /REPT EQUIPMENTS FACILITY DATES COMP /SYS SEQUENCER DESCRIPTION FPCCRP3 780519 INSTRU DH-1-FS1 WHILE INTRODUCING BORATED WATER TO THE 7805191430 CFC 783B0073 REACTOR VESSEL,USING THE DECAY HEAT REMOV-780815 AL SYSTEM, DH-1-FS1 WOULD HOT FUNCTICH.
Z BAILEY SIGNAL MONITOR HAD DEFECTIVE COMPONENTS REPLACED TRANSISTORS Q1(PART#2N2770)AND Q2(PART32H4036) ON SIGNAL MONITOR (BAILEY METER COMPANY PART86623819-A1). SIGNAL MONITOR THEN TESTED SATISFACTORILY.
FPCCRP3 780622 INSTRU RC-1-LT2 DURING TEST,RC-1-LT2 WAS INOPERABLE.
i 7806221400 CBD 783B0075 l
780815 Z
POWER TRANSFORMER AND AN AMPLIFIER ASSEM-BLY WERE DEFECTIVE.
REPLACED POWER TRANSFORMER PARTC6623040-2 (BAILEY METER COMPANY)AND AMPLIFIER ASSEM-BLY PART86619912A1(BAILEY METER CO.).
TRANSMITTER THEN FUNCTIONED PROPERLY.
FPCCRP3 780801 FILTER AHFL-1 SAMPLE CANNISTER FOR FILTER BANK AHFC-1 7508011000 SCB 784B0164 DID HOT MEET ACCEPTANCE CRIERIA 0F METHYL 781120 IODIDE REMOVAL EFFICIENCY OF 99 PER CEHT.
Z THIS FAILURE WAS TO BE EXPECTED DUE TO RECENT GUTAGE. MOISTURE CREATED DURING FUEL SHUFFLE AND VAPORS CREATED FROM PAINTING DOWHGRADED THE CHARCOAL FILTERS.
REPLACED CHARCOAL FILTERS BEFORE STARTUP.
l TESTED SATISFACTORY.
FPCCRP3 780827 INSTRU BS-1-PT2 BS-PT-2, BUILDING SPRAY PUMP 3B DISCHARGE 7808270800 SCC 783B0072 PRESSURE TRANSMITTER, INDICATES HD FLOW 731010 WHEN PUMP IS RUNNING.
Z TRANSMITTER FILLED WITH WATER AND AIR VENTED AND FILLED TRANSMITTER. TRANSMITTER THEN FUNCTIONED PROPERLY.
~
c
UL 20, 1979
-HPRDS OUTPUT ON FAILURES'AT BABCOCK 1.WILCOX PLANTS.
'PAGE 80:
EVENT /REPT..
EQUIPMENTS-FACILITY.
DATES COMP /SYS SEQUENCE #
. DESCRIPTION q
FPCCRP3 -780831~
INSTRU DN-43-FIS DNV-110, DELAY HEAT-REMOVAL NEAT' EXCHANGER 7808310800 CFC 783B0074
' DISCHARGE VALVE,WILL NOT CONTROL IN AUTO-781010 MATIC MODE.
Z DN-43-FIS, FLOW SWITCH WAS OUT OF CALBRAT-IDH CAUSING DNV-110 TO NOT CONTROL AUTO-MATICALLY.
' CALIBRATED DN-43-FIS PER SP-169.DNV-110 NOW CONTROLS PROPERLY.
FPCCRP3 780907'
.CRERVE A02-CRDM DURING SP-102, CONTROL ROD DROP TIME TESTS, 7809071500 RBB
'784B0147 POSITION INDICATOR FAILED TO FUNCTIDH 781121 CORRECTLv.
Z UNKNOWN REPLACED POSITION INDICATOR. RETESTED-FUN-CTIONED PROPERLY FPCCRP3 780907 CRDRVE CRDM-C08 DURING SP-102, CONTROL RCD DROP TIME TESTS, 7809071500 RBB 784B0150 POSITION INDICATOR FAILED TO FUNCTION 781121 CCRRECTLY.
Z UNKNOWN REPLACED POSITION INDICATOR. RETESTED-FUN-CTIONED PROPERLY FPCCRP3 780907 CRDRVE' CRDM-C09 DURING SP-102, CONTROL ROD DROP TIME TESTS, 7809071500 RBS 784B0151 POSITION INDICATOR FAILED TO FUNCTION 781121 CORRECTLY.
Z UNKNOWN l
REPLACED POSITION INDICATOR. RETESTED-FUN-CTIONED PROPERLY l
y.
UL120,s 1979' NPRDS-0UTPUT ON FAILURES AT BABCOCK 1.WILCOX PLANTS
. PAGE 81
. EVENT /REPT.
-EQU2PMENT#'
FACILITY DAT ES _'
COMP /SYS SEQUENCES
. DESCRIPTION FPCCRP3, 780907.
CRDRVE CRDM-C13
-CRDM-C013, GROUP 1-ROD 8, BLOWS PHASE FUSES.
7809071500 RBB 783B0067
-781010-
.7
' SHORTED PIN IN STATOR CONNECTOR.
STRAIGHTENED PINS IN STATOR CONNECTOR.
CRDM THEN OPERATED SATISFACTORILY.
FPCCRP3 780907' CRDRVE CRDM-C19' DURING SP-102, CONTROL ROD DROP TIME TESTS, 7809071500 RBB 784B0153 POSITION INDICATOR FAILED TO FUNCTION 781121 CORRECTLY.
Z UNKNOWN REPLACED POSITION INDICATOR. RETESTED-FUN-CTIONED PROPERLY FPCCRP3 780907 CRDRVE CRDM-C20 DURING SP-102, CONTROL ROD DROP TIME TESTS, 7809071500 RBB 784B0154 POSITION INDICATOR FAILED TO FUNCTION-731121 CORRECTLY.
Z UNKNOWN REPLACED POSITION INDICATOR. RETESTED-FUN-
-CTIONED PROPERLY FPCCRP3 780907 CRDRVE CRDM-C30-
_DURING SP-102, CONTROL ROD DROP TIME TESTS, 7809071500- RBB 784B0155 POSITION INDICATOR FAILED TO FUNCTION 781121 CORRECTLY.
Z UNKNOWN REPLACED POSITION INDICATOR. RETESTED-FUN -
CTIONED PROPERLY
-ii-......ii-ii..
3i
.. i. iii, ii.,......
3 lUL20, 1979 NPRDS OUTPUT ON FAILURES AY BADCOCK & WILCOX PLANTS PAGE 82 EVENT /REPT EQUIPMENT 8 FACILITY DATES COMP /SYS SEQUENCES DESCRIPTION FPCCRP3 780907 CRDRVE CRDM-C43 DURING SP-102, CONTROL ROD DROP TIME TESTS, 7809071500 RBB 78480158 POSITION INDICATOR FAI' TD TO FUNCTION 781121 CORRECTLY.
Z UNKNOWN REPLACED POSITION INDICATOR. RETESTED-FUN-CTIONED PROPERLY FPCCRP3 780907 CRDRVE CRDM-C45 DURING SP-102, CONTROL ROD DROP TIME TESTS, 7809071500 RBB 784B0160 POSITION INDICATOR FAILED TO FUNCTION 781121 CORRECTLY.
Z UNKNOWN REPLACED POSITION INDICATOR. RETESTED-FUN-CTIONED PROPERLY FPCCRP3 780907 CRDRVE CRDM-C56 DURING SP-102, CONTROL ROD DROP TIME TESTS, 7809071500 RBS 734B0162 POSITION INDICATOR FAILED TO FUNCTION 781121 CORRECTLY.
Z UNKNOWN REPLACED POSITION INDICATOR. RETESTED-FUN-CTIONED PROPERLY FPCCRP3 780907 VALV0P CFV-15F DURING PERFORMANCE OF SURVEILLANCE PRO-7809071600 SAB 784B0167 CEDURE SP 417
,A CLOSE POSITION INDICATION 781120 WAS NOT RECEIVED IN THE CONTROL ROOM WHEN 780929 H CFV-15 WAS COMMANDED TO CLOSE.
TROUBLESHOOTING, VALVE OPERATOR REVEALED A FAULTY TORQUE SWITCH.
REPLACED TORQUE SWITCH, VALVE THEN OPERAT-ED SATISFACTORY.
J -
UL' '2 0,J - 19 7 9 L
- NPRDS OUTPUT ON FRYLURES AT BABCOCK-& WILCOX PLANTS.
- PAGE.83 -
EVENT /REPTz ECUZPMENTt FACILITY- : DATES
. COMP /SY3' SEQUEHCE8 DESCRIPTION.
.FPCCRP3 -780910 CRDRVE CRDM-C37 DURING SURVEILLANCE TESTING, POSITION 7809101200 RBB 784B0156 -
INDICATOR FAILED TO INDICATE CORRECTLY.
781121' Z
UNKNOWN REPLACED POSITION INDICATOR. RETESTED INDICATOR-FUNCTIONED PROPERLY 780910.
CRDRVE CRDM-C43' DURING SURVEILLANCE TESTING, POSITION
' FPCCRP3.'7809101200 RBB 784B0159 INDICATOR FAILED TO INDICATE CORRECTLY.
781121 UNKNOWN REPLACED POSITION INDICATOR. RETESTED
. INDICATOR-FUNCTIONED PROPERLY FPCCRP3 780913 CRDRVE A02-CRDM DURING SURVEILLANCE TESTING, POSITION 7809130712 -RBB-784B0148 INDICATOR FAILED TO INDICATE CORRECTLY.
7,81120 Z
UNKNOWN REPLACED POSITION INDICATOR. RETESTED SATISFACTORY.
FPCCRP3 780913 CRDRVE CRDM-C37 DURING SURVEILLANCE TESTING, POSITION 7809130712 RBB 784B0157 INDICATOR FAILED TO INDICATE CORRECTLY.
781121 Z
UNKNOWN
. REPLACED POSITION INDICATOR. RETESTED INDICATOR-FUNCTIONED PROPERLY
NPRDS OUTPUT CH FAILURE 3 AT BABCDCK & WILCOX PLANTS PAGE 84 o.
EVENT /REPTO EQUIPMENTS ~
~
FACILITY-DATES COMP /SYS SEQUENCES.
DESCRIPTION CRDRVE CRDM-C46 DURING SURVEILLANCE TESTING, POSITION FPCCRP3..780913
- RBB 784B0161 INDICATOR FAILED TO INDICATE CORRECTLY.
L7809130712' 781121 Z
UNKNOWN REPLACED POSITION INDICATOR. RETESTED INDICATOR-FUNCTIONED PROPERLY FPCCRP3-780918-CRDRVE CRDM-C07
-ROD FAILED TO MOVE WHEN IT WAS COMMANDED 7809182130 RBB 783B0066 TO MOVE 781010-780918 H.
LEADSCREW WAS UNCOUPLED WITH RESPECT TO THE CONTROL ROD.
PLANT WAS BROUGHT.DOWN FROM MODE 2 TO MODE 5,DEPRESSURIZED. ROD WAS THEN RECOUPLED TO THE LEADSCREW. ROD THEN FUNCTIONED HORMAL-LY.
FPCCRP3 780927 BATTRY DPC-5 BATTERY CHARGER E KEEPS TRIPING.
7809270645-ECD 784B0144 781120 Z
HIGH VOLTAGE SHUTDOWN CARD KBC2136A WAS FOUND TO BE DEFECTIVE.
REPLACED HIGH VOLTAGE SHUTDOWN CARD AND CLEANED LEAD CONNECTIONS.ALSO REPLACED'A' PHASE CONTROL CARD.
FPCCRP3 781018 BLOWER AHF-1C FAN BEARINGS SHOMED SIGHS OF DETERIORATION 7810201420 SCB
.784B0146 WHEN TESTED FOR EXCESSIVE VIBRATION. FAN 781120 WAS TAKEN OUT OF SERVICE.THIS FAN IS A D
REACTOR BUILDING COOLING FAN.
BEARINGS FAILED DUE TO UNKNOWN REASONS.
l REMOVED BEARINGS. DISCONNECTED COUPLINGS, SCREENS, INST. LINES,AND LUBRICATION LINES.
REPLACED NEW BEARINGS, RECONNECTED LINES, SCREENS,ETC., REALIGNED CDUPLINGS. FAN SAT.
'UL 200 1979 NPRDS OUVPUT ON FAILURES AT DAGCOCK & WILCOX PLANTS PAGE 85 EVENT /REPT EQUIPMENTS FACILITY DATES COMP /SYS SEQUENCES DESCRIPTION FPCCRP3 781018 VALVCP MUV-58 WHILE PERFORMING SURVEILLANCE PROCEDURE 7810180200 PCB 784B0168 SP-340,MUV-58 WOULD NOT CLOSE 781120 Z
VALVE WOULD HOT CLOSE DUE TO A FAULTY TORQUE SWITCH.
REPACED TORQUE SWITCH. VALVE THEN TESTED SATISFACTORY.
FPCCRP3 781024 FILTER AHFL-2A CHARCOAL SAMPLE CANNISTER FOR FILTER BANK 7810241200 SCB 784B0165 AHFL-2A DID NOT MEET ACCEPTANCE CRITERIA 781120 0F METHYL IODIDE REMOVAL EFFICIENCY OF Z
95 PERCENT.
RECENT REFUELING ACTIVITIES CREATED MOIS-TURE AND PAINT FUMES WHICH DETERIORATED THE EFFICIENCY OF THE CHARC0AL.
REPLACED CHARCOAL FILTERS AND THEY TESTED SATISFACTORY FPCCRP3 781104 BATTRY DPC-6 BATTERY CHARGER'F' KEEPS TRIPPING.
7811041030 ECD 784B0145 781120 Z
DEFECTIVE HIGH VOLTAGE SHUTDOWN CARD,KBC-2136A.
l REPLACED DEFECTIVE CARD. BATTERY CHARGER OPERATED SATISFACTORY.
iFPCCRP3 781121 CRDRVE CRDM-C57 ABSOLUTE POSITION INDICATION FOR CONTROL 7811212215 RBB 784C0174 ROD C-57 DOES NOT CHANGE WHEN MOVING THE 790108 ROD.
Z CONTACTS OF POSITION INDICATOR'S REED SWITCH WERE STUCK.
A VARIABLE A.C.
FREQUENCY WAS APPLIED TO THE POSITION INDICATOR TO ALIGN MAGNET-IC FIELD. POSITION INDICATOR THEN FUNCTI-ONED PROPERLY.
1
UL 20, 1979 HPRDS OUTPUT ON FAILURES AT DABCOCK & WILCOX PLANT 3 PAGE 86 EVENT /REPT-EQUIPMENT 4 FACILITY DATES COMP /SYS SEQUENCES DESCRIPTION MECTMI1 740903 CKTBRK 1P-480V BUS WHEN THE DV DEVICE FOR THE 1P 480V BUS ARE 7409030001 EDA 743 0070 TESTED THEY DO NOT PRINT OUT ON THE COMPUT 740906 ER WIRING PROBLEM FOUND AND REPAIRED MECTMI? 740903 INSTRU 63Z2B/RB3A INDICATION LIGHT DOES NOT COME OH 7409030001 IBC 743 0074 740910 DIRTY CONTACT CLEANED CONTACTS MECTMIt 740903 '
INSTRU 63Z2B/RC3A INDICATION LIGHT DOES NOT COME OH 7409030001 IBC 743 0073 740910 DIRTY CONTACT CLEANED CONTACTS MECTMIt 740911 MOTORX BS-V-1B BLDWS CONTROL FUSES WHEN OPENING WITH T54 7409110001 SCC 743 0071 RBB SWITCH IN TEST 2 & TEST 3 POSITIONS.
743913 REMOVED EXTRA WIRE LEFT THERE DURING CONSTRUCTION.
I t
l l
-x
(UL 20, 1979 NPRDS OUTPUT ON FATLURES AT DAGCOCK & WILCOX PLANTS PAGE 87 EV dT/REPT EQUIPMENT #
' FACILITY DATES COMP /SYS SEQUENCE #
DESCRIPTION MECTMI1 740918 ANNUNC FS-241-ABC RX BLDG COOLING EXCESS CONDENSATE FLOW 7409180001 SBB 744 0010 ALARMS 740921 REMOVED OLASS CLEAN AND CHECKED ALARM POINTS WITH CONTROL ROOM MECTMI1 740919 INSTRU RTM RPS-C FAULTY TEST TRIP CHANNEL 4 7409190001 IBB 743 0075 740921 REPLACE SWITCH MECTMZ1 740926 INSTRU CRC-56 METER AND RECORDER DO NOT AGREE.
7409260001 PCB 743 0076 740927 PH TO CURRENT CONVERT 0R REPLACED AND CALIBRATED BOTH CONVERT 0R AND RECORDER MECTMI1 750523 MOTORX DRPM1B DR-P-1B MOTOR SHAFT IS SHEARED AT THE END 7505230000 CFC 754 0230 BELL HOUSING ON THE DRIVE END OF MOTOR l
750701
]
REPLACE SHAFT i
JUL 200 1979 NPRDS OUTPUT ON FAILURES AT BABCOCK & WILCOX PLANTS PAGE 38 EVENT /REPT EQUIPMENT #
FACILITY DATES COMP /SYS SEQUENCES DESCRIPTION l
MECTMI1 750530 MOTORX DRPM1A LOWER END BRACKET (ENDBELL) IS CRACKED 7505301600 CFC 754 0229 AND REQUIRES REPLACEMENT 750701 END BRACKED REPLACED MECTMI1 -751113 CRDRVE CRDM #25 BAD STATOR $ B CABLE ON MECN #25 7511130000 RBB 754 0226 760110 REPLACED STATOR $ B CABLE MECTMI1 751113 CRDRVE CRDM #7 BAD STATOR $ B CABLE ON MECH 7 7511130000 RBB 754 0228 760110 REPLACED BAD STATOR $ CABLE MECTMI1 751121 CRDRVE CRDM #31 CRDM831 STATOR HAS LOW INSULATION RESISTAN 7511210200 RBB 754 0227 CE 760110 REPLACED STATOR ON MECH #31 ALSO CABLE B
ML 20, 1979 NPRDS OUTPUV ON FAILURES AT DABCOCK & WILCOX PLANTS PAGE 89 EVENT /REPT EQUIPMENT #
PACILITY DATES COMP /SYS SEQUENCES DESCRIPTION MECTMI1 771022 VALV0P MU V 0014B WHILE PERFORMING ES 1ESTING MU V 0014B FAI 7710221110 PCB 774A0313 LED TO OPERATE AND TRIPPED ITS THERMAL OVE 771028 RLOAD DEVICES. THE VALVE WAS OPERATED MANU 771115 H ALLY.
THE CAUSE OF FAILURE WAS DUE TO BROKEN MOU NTING BOLTS LODGED IN MOTOR WINDINGS.
THE MOTOR WAS REMOVED AND A NEW MOTOR INST ALLED AND TESTED SATISFACTORILY.
SMURSS1 750827 VALVEX SFV-53604 EXCESSIVE AIR LEAKAGE FOR REACTOR DUILDING 7508270800 SCB 761 0027 PURGE OUTLET VALVE WAS DETECTED DURING SUR 760108 VEILLANCE TESTING 750925 H VALVE SEATS ON 66 INCH VALVE HAD BEEN IMPR OPERLY ADJUSTED READJUSTED VALVE SEAT AND RETESTED.
SMURSS1 750911 VALVEX SFV-53604 EXCESSIVE LEAKAGE THRU VALVE DURING SURVEI 7509110331 SCB 761 0028 LLANCE TEST 760108 Z
VALVE SEAT ON 66 INCH VALVE HAD BEEN IMPRO PERLY ADJUSTED REPLACED VALVE SEAT I SMURSSI 751231 VALVEX PSV-20004 RELIEF VALVE LEAKING THRU AND WILL NOT SEA i
7512311930 CFC 763 0588 T LEAK TIGHT l
760910 l
Z l
UNKNOWN l
DISASSEMBLED VALVE, LAPPED SEAT, BENCH TES TED, RESET TO 300 PSIG AND REINSTALLED
JUL 20, 1979 NPRDS OUVPUT ON FAILURES AT DABCOCK & WILCOX PLANTS PAGE 90
. EVENT /REPT EQUIPMENTS FACILITY DATES COMP /S";
SEQUENCES DESCRIPTION SMURSSI 760207 VALVEX ::V-26106 DURING SURVEILLANCE TESTING EMERGENCY SUMP 7602071900 SFF 761 5071 SUCTION VALVE FAILED TO CPEN ON CONMAND 76f312 7 ^.' 3 0 4 H CAUSE OF FAILURE WAS EITHER DUE TO PACKING BEING TOO TIGHT OR VALVE DISC STICKING IN THE SEAT VALVE WAS MANUALLY OPENED FOR A PORTION CF THE STROKE WHICH ALLEVIATED THE PROBLEM SMURSS1 761009 VALVEX RCS-001 VALVE LEAKING BETWEEN BODY AND BONNET 7610091505 CBD-01 764 0099 761206 D
POOR QA AT MANUFACTURER VALVE BODY SEAL AR EA LARGER THAN STANDARD SIZE SEAL CASKET FABRICATED AND INSTALLED LARGER SEAL RING SMURSS7 761025 CKTERK 2B121 DURING TEST OF FIRE PROTECTION SYSTEM EMER 7510251400 EBE-03 763 3287 GENCY SUPPLY FAN WAS STARTED AND COULD NOT 761029 BE STOPPED FROM REMOTE CONTROL Z
AUXILIARY CONTACTS ON CLOSING COIL FOR BRE AKER WERE BINDING AND WOULD NOT RELEASE CO IL REPLACED AUXILIARY CONTACT SET, TESTED AND RETURNED TO SERVICE lSMURSS1 770726 VALV0P SFV-70001-L THE INSIDE CONTAINMENT ISOLATION VALVE ON l
7707261100 CBD-02 77430407 THE SAMPLE LINE FAILED TO CLOSE 771219 771220 H THE VALVE WOULD NOT CLOSE DUE TO A FAILED MOTOR OPERATOR REPLACED MOTOR I
1 0 1979 NPRDS CUTPUT ON FAILURES AT BA9 COCK & WILCOX PLANTS PAGE 91 lUL 20 EVENT /REPT EQUZPMENT#
FACILITY DATES COMP /SYS SEQUENCES DESCRIPTION SMURSS1 770921 VALVEX SFV-53504 LLRT WAS BEING PERFORMED AND EXCESSIVE LEA
/709211400 SCB 774B0404 KAGE WAS NOTICED 771219 771219 H DEGRADATIDH OF VALVE SEAT WAS CAUSE OF LEA KAGE INSTALLED HEW VALVE SEAT AND RETESTED SMURSS1 770921 VALVEX SFV-53605 LLRT WAS BEING PERFORMED AND EXCESSIVE LEA 7709211400 SCB 774B0405 KAGE WAS NOTICED 771219 771219 H i
DEGRADATION OF VALVE SEAT WAS CAUSE OF LEA KAGE INSTALLED NEW VALVE SEAT AND RETESTED SMURSS1 771001 VALV0P SFV-25003-L SEVERE WEAR WAS DISCOVERED IN THE MOTOR OP 7710280001 SFF 774B0406 ERATOR CLUTCH ASSEMBLY OF SFV-25003-L 771219 771031 D H UNKNOWN-INVESTIGATION IS IN PROGRESS INSTALLED NEW GEARS AND CLUTCH l
SMURSS1 771101 SUPORT SS-17 DURING SURVEILLANCE INSPECTION, FOUND FLUI 7711010930 CBD-01 774B0402 D ACCUMULATOR FOR SHUBBER DRY 771219 771129 H A LEAKING 0 RING WAS THE CAUSE OF THE EMPT Y ACCUMULATOR THE ACCUMULATOR WAS REBUILT AND RETURNED TO SERVICE l
\\
UL 20, 1979 HPRDS OUTPUT ON FAILURES AT BABCOCK 1 WILCOX PLANTS PAGE 92 EVENT /REPT EQUIPMENT 8 FACILITY DATES CCMP/SYS SEQUENCES DESCRIPTION SMURSSI 771116 VALVEX HV-21515 EXCESSIVE LEAKAGE FROM RCS. FOUND LEAKAGE 7711',1715 CBD 774B0403 TO SE FROM PACKING GLAND OF HV-21515 77'?.s9 778209 H UNKNOWN l
BACKSEATED VALVE TO STOP LEAKAGE J
SMURSS1 780521 VALVEX HV-21505 DURING OPERATION THE PRESSURIZER CODE SAFE 7805210800 CBD 783A0358 TY DEVELOPED LEAKAGE AND THE LEAKAGE CONTI 780710 NUED IN SEVERITY UNTIL REPAIR WAS REQUIRED 780705 H LEAKAGE THRU SEAT OF VALVE POLISHED AND RELAPPED VALVE SEAT SMURSSV 780521 VALVEX PSV-21506 DURING OPERATION THE PRESSURIZER CODE SAFE 7805210800 CBD 783A0359 TY DEVELOPED LEAKAGE AND THE LEAKAGE CONTI 780710 HUED IN SEVERITY UNTIL REPAIR WAS REQUIRED 780705 H LEAKAGE THRU SEAT OF VALVE POLISHED AND RELAPPED VALVE SEAT SMURSS1 780521 VALVEX PSV-21507 DURING OPERATI?N THE PRESSURIZEp 0;Lc SAFE 7805210800 CBD 783A0360 TY DEVELOPED LEoKAGE AND THE LEAKAGE CONTI 780710 NUED IN SEVERITY UNTIL REPAIR WAS REQUIRED 780705 H LEAKAGE TARU SEAT OF VALVE POLISHED AND RELAPPED VALVE SEAT
UL 20, 1979 NPRDS OUTPUT ON FAILURES AT BA9 COCK & WILCOX PLANVS PAGE 93 EUENT/REPT EQUIPMENTS FACILITY DATES COMP /SYS SEQUENCES DESCRIPTION SMURSS1 780622 PUMPXX P261B WHILE IN CSD WITH DHR SYS A IN SERVICE, EX 7806220300 CFC 782C0181 CESSIVE LEAKAGE WAS NOTED FROM THE PUMP SE 780629 AL 780628 H UPON DISASSEMBLY OF THE PUMP SEAL NOTHING UNUSUAL WAS NOTED, CAUSE OF LEAKAGE IS UNK NOWN REPLACED PUMP SEAL
.j SMURSS1 781024 GENERA GEA DURING STEADY STATE OPERATION A DIESEL GEN 7810241150 EDA-02 784B0460 ERATOR, DPERABILITY OF THE A DIESEL GENERA 781106 TOR WAS LOST. LOSS WAS DUE TO PROBLEMS WIT 781106 H H THE VOLTAGE REGULATOR.
PRIMARY FUSES ON THE CONTROL POWER CIRCUIT FOR THE VOLTAGE REGULATOR HAD FAILED.
FUSES WERE REPLACED, THE UNIT TESTED AND R ETURNED TO SERVICE.
l l
l
_. _ _ -