ML20052F259
| ML20052F259 | |
| Person / Time | |
|---|---|
| Issue date: | 11/03/1981 |
| From: | NRC |
| To: | |
| Shared Package | |
| ML19219B002 | List: |
| References | |
| FOIA-81-417 NUDOCS 8205120291 | |
| Download: ML20052F259 (81) | |
Text
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27/6/0000001-0000206//
1 PAGE I
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ACCESSION NO.
0020858293 f) [l TITLE SCHAM DISCHARGE VOLUME HIGH LE vtl SWITCH F A ILS AT UROWNS F ERRY l CURPAUTH T E NNE SSE E VALLEY AUINOHITY DATE 1980
' ' ()
TYPE O
() :
MEMO L1R W/LER 80-051 10 U.S.
NHC. REGION 2.
JUL 18. 3980. DOCKET 50-259. 1 Y PE --BW R. MF G --G E. A E --T V 4 AVAIL AVAILABILITY - NHC PUuLIC DOCUMENT HOOM. 1787 H STREET. WASHINGTON. D.
C.
20555 108 CENIS/PAGF --
()
CATEGORY 1700003090000
()
EDITION 0183 CUNP CODE TVA COUNTRY A
([
AUSTRACT DATE OF EVENT - 062680.
POWER LEVEL - 070%.
CAUSE - STUCK FLOAT.
DURING NORMAL OPERATION WHILE
[)
PERFOHMING SUR VE I L LA NLL TESTING. SCRAM D IS CH AR GE VOLUME HIGH WATER LEVEL SWI T CH LS-84-4 SA FAILED TO i
OPERATE Al T HE PHESCRIHED SETPOINIS.
A REDUSM ANT SWITCH AND A HEDONDANT THIP CHANNEL WERE OPERAHLE.
J THERE HAVE UEEN NO PHEVIOUS DCLURRENCES.
THE FLOAT WAS STUCK IN THE MODEL SL-305-E3-M LEVEL SW I T C HE S.
6 (p
THE FLOAI CHAMBER WAS FLUSHED. THE SW I T CH INSPECTED. AND FUNCTIONALLY IEbiED FOH REPEATABILIlv.
[g i RECUkRENCE CONTHOL WILL CONSIST OF MORE FR E QUE N T TEST ING OF THE SW I T CHE S.
PHOCE DURE S WILL ALSO BE REVISED TO Du FLUSHING.
COMPONENT CODE INSTRU-INSTRUMLNTATION AND CONTROLS l (f SYSTEM CUDE IA-kEACTUN THIP SYSTEMS g
K E Y W OR DS F AILUHE ikE ACTOR. UWH3 BROWNS FERRY I (UWR)$ FAILURE. INSTRUMENf 3F A ILUHE. I NHENEN13 f EST. SYSTEM l
OPER AU I LI T Y 3 SENSDRS. LEVEL 8REACTUH PHO I EC T I ON SYSTEM 8 INS TR UMEN T. SWI TCH3CONTHOL RUD SCRAM MECHANISMS DISCHARGE 8SIORAGE CONTAINEH4 CONTROL NOD DRIVES 27/6/0000001-0000206//
ACCESSION NO.
002015n229,,f-P' TITLE SCRAM AISCHARGE VOLUME FAI 10 DRAIN AND ALARMS CLEAR AT ORESDCN 3 gy COHPAUTH COMMOMLALTH _ ED I BON-CO.
(g DATF 59HO Te rt O
MEMO LTR W/LEN 60-031 10 U.S.
NHC. REGION 3.
JUL 26. 1980. DOCKET 50-249. T YPE --U WR. M F G --GE. AL--SEL
(%
AVAIL AVAILAOILITY - NHC PUULIC DOCUMtNi NDOM. 8787 H STREET. W A SH I NG T ON.
D.
C.
20555 (OH CENTS /PAGE g
V MINIMUM CH AR GE S2.OO3 C A T E GORY 1F00003090000 EDITION 0153
()
CUHP CODE ORS gg COUNIRY A
ADSTRACT DAIE OF EVENT - 0F8980.
POWEH LEVEL - 000%.
CAUSE - VACUUM DREAKER ST ICKS CLOSED.
F DLLOW I NG A MANUAL SCRAM. AN ULINASONIC TEST OF THE WE ST SCRAM DI SCH AR GE VOLUME REVEALED THE 4-INCH PIPE WAS 80% FULL (4
AriER ALL LE VEL AL AHMS CLE ARED UN THE I NS T RUME N T E D SCRAM VOLUME.
A HECENTLY IMPLEMENTED DAILY dg ULTRASONIC TESI Vt R I F I E S THAT SCHAM VOLUME HEMAINS DHAINED AND THAT SUFFBCIENT VOLUME IS AVAILAULE TO ACCOMMUDATE A SCHAM.
THIS WAS THE FIRS T OCCUHRENCE OF THIS TYPE A T DHE SDE N.
THE ExpC? CAUSE IS UNKNOWN. IlUI T HE V OLUME APPEARED TO DE INSUFFICIENTLY VENT ED DUR ING T HE DR AINING CYCLE.
AFTER MANUAL
{}
AC TU AT I ON OF A STUCK CLOSED WACUUM UNEAKER. THE SCHAM DISCHARGE VOLUME RATE OF DRA INIh4 APPE AAEU g
A DE OU A T E.
VENT LINE S WENE SUNSE QUE N TLY CUI IO PHOVIDE A POSITIVE VENilNG PATH.
A SYSTEM TO CONTINUOUSLY MON I I DH WATER LEVELS IN SCNAM DISCHAHbE VOLUMES IS DERNG I NVE ST IG A T ED AS REOUIRED DY I.E.
UULLETIN 80-87 SUPPLEMENT 1.
(}
COMPONENT CODE VALVEM-VALVES qg SYSTEM CODE IC-SYS REORD F UR SAFE SHUIDOWN KE Y WOR DS F A I LURE ;HE AC TON. ItWR3DRESUEN 3 (BWR)3FAILURC. INSTHUMENT I F A ILUN E. DESIGN ERRORITEST. SYSTEM OPERADELITY8 CONTROL HOD SCRAM ME CH AN I SM 8 DI SCHAR GE 3 SIDR AGE CON T A INE R I SE N SON S. LEVEL;tNSTRUMENI. ALARMtvALVES4 VACUUM
()
RELIEFICONTROL ROD URIVES8CMASPilE BULLETIN
[g 27/6/0000001-0000206//
3 A CCE SS ION NO.
0020155299
()
TITLE APHM CHANNEL FAILS TO GO INDPERADLE WITH LESS THAN II LPHM INPUTS At HATCH 2
__ e qg CORPAUTH GEOHGIA POWER CO.
8205120291 811103 0
{
DIGNANB1-417 PDR
F TITLE APRM CHAhEEL FAILS TO GO INOPERA8LE CITH LESS THAN St LPRM INPUTS AT HA T O1 2
,j
~
CITHPJUTH GEORGBA PO CR CD.
-.f i
e
()
(>
27/6/0000003-0000206//
3 CONTINUATION 1 PAGE 2
(y I DATE 1980
()
T Y PE O
MEMO LTR W/L?R 80-014 10 U.S. NRC. REGION 2. F EB 19 1980. DDCKET 50-366. T Y PE --OW R, MFG--GE. AE --SS I AVAIL AVAILAdliITY - NRC PUULIC DOCUMENT ROOM. 3787 H STREET. WASHINGTUN. D.
C.
20555 108 CENTS /PAGE --
(}
()
CATEGORY 8700003090000 EDI T I ON 0800 CORP C ODE GPC
(%
COUNTRY A
gg LH STR ACT DATE OF EVENT - 020480.
PO WE R LE V E L - 099S.
CAUSE - INSTRUMENT DRIFT.
DURING ST E ADY STATE DPERATIDN WHILE PEHFOHMINu APHM INST RU ME NT FUNCT IONAL TEST AND CALIBRATION. APRM "C" F A I LE D TO GO INOPERABLE.
l TWD OPEH ADLE CHANNELS WERE MAINTAINED IN THE TRIP SYSTEM.
THIS IS A REPETITIVE EVENT AS REPORTED ON gg !
(}
LER 50-366/19F 8-5J.
THE CAUSE WAS ATTHIDUTED TO INSTRUMENT DRIF T.
THE APRM WAS ADJUSTED. SUCCESSF ULLY HEIESTED AND DECL ARE D OPER ABLE.
l COMPONENT CODE INSTRU-INS TRUMEN T ATI ON AND CONTROLS SYSTEM CODE IA-REACIDH IRIP SYSIEMS j
(}
KEYWDHDS FAILORE& REACTOR. HWR: HATCH 2 (HWR38 FAILURE. INSTRUMEN T 8F AILURE. INHERENi t f EST. SYSTEM DPER ASILI T Y3
,}
INSTRUMENT. PO WE R RANGEtREACTON PROTECTIDN SYSTEM 8 SET POINTEDRIFTifMSIRUMENT. SWETCH 27/6/0000005-0000206//
4
()
ACCESSION NO.
0020855296
.)
TITLE CONIROL RUD DR IVE ACCUMULA T OR LEVE L SW I ICH F AI LS A T DROWNS FERRY I CORPAUTH TENNESSEE VALLEY AUTHORITY DATE 8980
(}
TYPE O
()
MEMO LTR W/LER 80-006 TO U.S.
NRC. REGION 2. FEB 20. 1980. DOCKET 50-259. T Y PE --D WR. M F G--GE. AE--SVA AVAIL AVAILABILITY - NRC PUBLIC DOCUMENT ROOM. 1787 H STREET. WASHINGTON. D.
C.
20555 608 CENTS /PAGE --
.} 9
(}
CATEGORY 1700003090000 EDITION 0108 l'
COHP CUDE ivA l
COUNTRY A
l
(}
LHSIRACT DATE OF EVENT - 012280.
PO WE R LEVEL - 000S.
CAUSE - URDKEN REED SWITCH.
DUR ING REFUELING OPER Ail 0NS.
J) i CRD ACCUMULATDH LEVE L SW IT CH ON CRD UNIT 38-13 W AS FOUND TO DE INOPERABLE CONTRARY TO TECH. SPECS.
PREVIOUS DCCUHRENCET LWH-50-260/F909.
THE CAUSE OF THE FAILURE OF SWITCH LS-I-305-129. GEM'S INC..
LIOURD LEVEL SWITCH. GE PART NHl37Cl434Pl. WAS A ORDKEN REED Switch.
THE SWITCH WAS REPLACED AND
(}
}
COMPUNEN T CODE I NSTRU-INSTHus4EN T A t l ON AND CONTROLS SYSTEM CODE B A-RE ACTOR TRIP SYST EMS KEYWORDS FAILUNEiHEACTOR. UWH 3 BROWNS FEkRY l towR33 FAILURE. I NSTRUMENT IF A ILURE. INHE REN T 3 5 NST RUMEN T. SWITCH 3
/'s NEACTOR PHOTECTION SYSTEMtCONIHOL HUD bdIVESITEST. SYSTEM OPER AulLl1Y3REOUELING$ SENSORS. LEVEL 8
}
ACCUMULATORS i
27/6/0000001-0000206//
S
()
ACCESSION NO.
0020155208
)
T11LE CHD SCHAM ACCUMULATOR LEVEL SWITCH FAILS TO DPERATE AT BROWNS FERRY I CORPAUTH TENNESSEE VALLEY Au f MOH E T Y DATE 1980 (a
TYPE O
'}
MEMO LTR W/LEN 80-034 TO U.S. NHC. REGION 2. FEB 25. 1980. DOCKET 50-259. T YPE --U W R, MFG--GE.
AE -- T W A CVAIL AVAILAURLRTY - NRC PUBLIC DOCUMENT ROOM. 1787 H STREEi. WASHINGTON. D. C.
20555 (OR CENTS /PAGE --
MINIMUM CHA R GE
$2.00)
(4 CATEGORY 1700003090000
()
EDITION 0800 CONP CUDE TVA COUNINY A
l}
AU S TR ACT DATE OF EVENT - OI2680.
POWER LEVEL - 000S.
CAUSE - BROKEN REED SWITCH.
DURING REFUELING OUT AGE.
()
WHILE PEHFOHMING EMI-50. SCHAM ACCUMUL A T OR LEVEL SW I T CH LS-t 34 FOR CRD 26-27 WOULD NOT OPEHATE 10 (I
()
c>
c) 27/6/0000003-0000206//
5 CONTINUATIOd 1 PAGE 3
()
GIVE ANNUNCIATION FOR HIGH ACCUMULA1DH LEVEL AS REQUIRED BY T.S.
ItERE WA S NO REDUNDANCY AVAILABLE.
()
PREVIOUS OCCURHENCET OFHO-50-259/8006. DFND-50-260/7909 AND OF RD-50-259/7836.
THE CAUSE OF THE FAILUNE OF SWI'1CH LS-I-85-34 GE M
THE SWliCH WAS REPLACED A NO VERIFIED DPERABLE.
()
COMPUNENT CO DE INSTRU-INSTRUMENTATION AND CONTROLS q) i kYSTEM CDDE IA-REACTON 1 HIP SYSTEMS i
KEYWORDS FAILUNEIREACTDH. S WR 50HOWNS FERMY l (nWRitSENSOR$. LEVELIACCUMULATORSICONTRDL ROD DRIVES $1NSTRUMENT.
I SW l i CH 31 E ST. SYSTEM OPER AB I LI TY 8HE ACT UM PRO T EC T I ON SYST EM $F AILURE. INSTRUMENi8FAILUME. INHEREN T 3
()
L Cl R EF UCL I NG
()
A85T5 CT UATE OF EVENT - 012&&S.
PO WE R LEVE L - #333.
CAUSE - BROKEN REED VIITCH.
DURING REF UELI NG DU I R4t e ey f EHILE PEHF OHMI NG E MI-53. SCHLG ACCUMULA TOR LEVEL $331CH LS-1-CS-34 FOR CRD 23-27 WDULD NOT C?EH A TE TO
()
)
(?
')
27/6/0000005-0000206//
5 CONTINUATION I PAGE 3
(% 8 GIVE ANNUNCIATEDN FOR HIGH ACCUMULATOR LEVEL AS REQUIRED DV T.S.
THERE WA S NO REDUNDANCY AVAILADLE.
f) )
PREVIOUS OCCURNENCE:
OF HO-50-259/8 006. DFRO-50-260/7909 AND OFRO-50-259/7636.
THE CAUSE OF THE I
FAILURE DF SW11CH LS-I-85-34 GEM'S INC.. LIQUID LEVEL SulTCH. GE P ART NUMutR ll7Cl434POOle WAS A ORDKEN REED SWITCH.
THE SWITCH WAS REPLACED AND WERIFIED OPLRABLE.
g%
COODONENT CODE INSTRU-INSTRUMENTATION A ND CONTHDLS
/)
SYS 'E M CDDE RA-REACIDH 1 RIP SYSTEMS KoiduRDS FAILUkE3HLACTDHe BWH;URDWNS FERMY I I D WR D I SE PISOR$. LEVELIACCUMULATDRSICDNTRDL ROD DRIVES $1NSTRUMENT.
SWITCHifEST, SYSTEM OPER AS I LI TY 3 RE ACf DH PHOTECTION SYSTEM &F AILURE, INSTRUMENT 3 FAILURE, INHERENII i ()
R E F UEL I NG
()
f 27/6/0000001-0000206//
6 ACCESSION NO.
0020154662 i
i (%
TITLE HSCS OLOCKS ROD WI THDR AW AL AT BRUN S W I C K 2
(),
CORP %UTH CAROL.INA POWER C LIGHT CDee SOUTHPORT, NC DATE 8980 l
TYPE O
(%
MEMO 2 PGS. LIR W.*LER 2-60-2 TO U.S. NRC. REGION II. JAN. 22e 3980. DOCKET 50-324. T Y PE --BW R. MF G- -GE.
.}
AE--ULCC AVAIL AVAILAMILITY - NRC PUBLIC DOCUMENT ROOMe 1787 H STREET. WASHINGTON, D.
C.
20555 (08 CENIS/PAGE --
k.INIMUM CHARCE S2.OOD
(}
CATEGORY 1700003090000 J)
EDITION 0107 CORP CODE AHV COUNTRY A
{g h
(}
AUSTRACT DATE OF EVENT - 080280.
POWER LEVEL - OOlz.
CAUSE - DEFECTIVE FULL-IN REED SWITCH FOR DNE ROD.
DUMING A NDRMAL RE ACION STARTUP. RSCS WDULD NOT ALLOW RODS IU BE PULLED UNTIL HDD 34 -27 WAS H YP ASSED
" FULL-IN".
AN INVEST IG AT I DN H AS DE IERMINED THAT THE " FULL-IN" REED SWI TCH FOR ROO 34-27 IS DEFECTIVE.
l THIS SWIICH WILL DE REPAINED/ REPLACED DURING THE NEXT DUTAGE OF SUFFICIENT 4.ENGTH FOR A DRVWELL ENTRY.
} [l
(}
E N G I NL E R I NG IS EVALUAT ING T HE F A I Luke NATE OF THEbE SW11CHES TO DE TERMINE IF A POSSIHLE GENENIC PRDOLEM i
EXISTS.
COMPONENT CDDE I N S T R U-I NS T RUM EN T A T I ON AND CONTHDLS i
SYSTEM CODE ID-SAFETY RELATED DlbPLAY INSIR gg
(}
KEYWORDS FAILUREIREACTOR. BWHiUHUNSWICK 2 (BWRl8CONTRDL RCD DRIVESiCONTRDL SYSTENII NSTRUMENT, PROTECT IVE 8 INSIRUMLNT, SWIICH8FAILUNE. INSTRUMENT 8 FAILURE. INHERENT 8HEACTOR STAH1UP 27/6/0000001-0000206//
7
(}
ACCESSION NO.
00Z0154503 g
TITLE SET POINT DRIFT IN APRM CHANNEL AT FIT 2 PATRICK CORPAU TH POWER AufHURITY OF YtE STATE OF NEW YORKE LYCDMING, NY DATE 39u0
()
TYPE O
gg j MEMO 3 PGS. LTH W/LLR 79-117/03L-O TO NRCo REGION JAN. 17e 3980. DOCKET 50-333. T Y PE =-DW R, MF G--GE.
AE--SCW AVAIL AVAILABILITY - NRC PUBLIC DOCUMENT ROOM. 173? H STREET. WASHINGIDN. D.
C.
20555 (08 CE NT S /P AGE --
(}
MINIMUM CH AN GE S2.OO3 rg CATEGDRY 8700008090000 EDITION 0807 CORP CODE BGO
()
COUNTRY A
gg ADSTRACT DATE UF EVENT - 122779.
POWER LEVEL - COOT.
CAUSE - INSTRUMENT DHIFT.
DURING PREPAR ATION FOR REACIOR STANTUP AND WHILE CONDUCTING A PR M HIGH F LUX IN SHUIDOWNe STARTUP OR REF UEL FUNCT IONAL TEST, APHM CHANNEL D SCRAM TRIP POINI W AS FOUND SET AT 234 COMP ARED TO A TECH SPEC LIMIT DF EQUAL 10 UR LESS THAN
{y 15%.
THE HEMAINING APHM CHANNELS WEHE VENIFIED 10 Ot SE T WITHIN T HE L I MI T S.
THE I MPH DPE R SET POINT IS
()
BELIEVED TO BE DUE TO INSTHUMENT DR IF T. REC ALISH All ON DF THE INSTRUMENT R ESTDRED IT T U OPE R ABLE STATUS I
THE S A ME DAY.
COMPONENT CUDE INSTRU-INSTRUMENTATION Ate) CONTROLS
')f SYSTE M C DDE IA-HLACIDH TRIP SYSTEMS F
KEYWORDS FAILURE 3HEACIDH. UWREFIT2 PATRICK E Owa l 3 I NST R UMEN T, POWER RANGE 81ESie SY ST E M DPCRABILITY3REACIDR 1
()
C)
ED 1D 27/6/0000005-0000206//
7 CDNTINUATION 3 PAGE 4
()
PHOTECTION SYS TE MIF A ILUHE e INS f HUMENi &F A ILUHE, IMMERENT 8 SET POI NT i DRIF T 8RE ACTOR STARTUP3 INSTRUMENT.
gg SWITCH 27/6/0000001-0000206//
8
()
ACCESS ION NO.
00Z0154277 gg fliLE HOD ULOCK MONITOR FAILS INOPERADLE AT ANNULD CORPAUTH IDWA ELECTRIC LIGHT & POWEM CO.
DATE 3979 d ()
1YPE O
gg L
E3C3
_oGR WOoGR 99-00I TO u.S. NHC, HEGION J.
DC C 10. 1979 DOCKET 50-333. T Y PE --B WR. MF G--GE. AE--BECH
isE'Sise DAY.
CDMPONEP1T CODE I NS T LU-I NS T RUMEN T A T I ON APO CONTROLS
- j. i
)
$YSTEQ CODE lA-HLACTUH TAIP SYSTEMS IBWRISINSTRUMENie POWE2 SENGE 8 7ESie SY STEQ DPE3 ASILITYtSECCTOR KLYWOROS FAILUREiHEACIDR, CWR g.F I T ZPATRICK f) *
)
O PAGE 4
)
CONilNUATION I PROTECTION SYSTEMIF AILOHE. INSTRUMENTIFAILUME. lHHER ENT iSE T POINT 80 RIFT 3 REACTOR S Q
7 h 7/6/OOOOOO I-OOOO206//
SWlicH e) >
27/6/0000001-0000206//
8 I
TITLE ROD DLOCA MONITOR FAILS INOPEHAULE AT ARNULD ECCES$10N NO.
00Z015427T
(} I CDN PAU TH IOWA ELEC1 HIC Lir.HT & POWER CO.
l DATE 1979 ME MD LTR W/LER 79-03B TO U.S. NRC. REGION 3. DE C 10. 3 9 F9. DOCKET 50-331. T YPE--MWR. MF G-- GE. AE--DECH
}
TYPE O
AVAIL AVAILAulLITY - NRC PUBLIC DOCUMENT ROOM, 1787 H STREET. WASHINGTON D.C. 20555. (OS /PAGE -- MINIMUM
+
CON T ROL -02 799 7
() i CH AR GE S2.OOR CATEGORY 870000 090000 EDITION OROF
{g AOSTR ACT DATE OF EVENT - 318079. POWER LEVEL - 0861. CA USE - ORIFT IN CDUNT TRIP LEVEL SET POINT.
DURING POWER CORP CODE BGN ASCENSION FOLLOWING A RE ACIDH SCR AM. CHANNEL
'O' DOD BLOCK MONITOR 1RHM) F AILED *INOP* CAUSING A p
COUNTRY A
CONT HOL HOD ULOCK.
THE OLOCK UCCUNRED INTENMITTENTLY DEPENORNG ON IPE COITROL ROD SELECTED.
.}
VERIFYING CH ANNEL
'A' DPERABILITY. CHA N NEL
'O' RBM W AS BY PASSED AS NECES CARY WITHURAWAL.
CH ANNE L
'O' RUM FAILED 'INOP' DUE TO A DRIFTED COUNT TRIP t/WEL SEIPOINT.
1HE CDUMT TRIP LEVEL SEIPOINI WAS ADJUSTED AND SURVEILLANCE TEST WA S PERF OR MED TO VER I F - CHANNEL
'O' R84 UPERAHILITY.
g 4
THE CDUNT T H IP LEVEL ADJUSIMENT WAS COMPLETED DN II-83-79.
f) l*
f.
COMPONENT CDDE INSTRU-INSTRUMENTATEDN AND CDNTHDLS SYSTEM CODE RD-R E PC I IV I T Y CONTROL SYSTEMS S YS TE M ICONINDL RDO ME YWORDS F AILUNEiHE ACTOR, 11WR 8 ANNULD 10 WH i l INS T R UME N T. SW I TCH 5 INSTRUMENT. PROT ECilV EICONTRDL DRlwES3fEST. SYSTEM UpER AB I LI TY 4F A ILURE. INSTRUMENT tF AILORE. INHERENilSET POI N T ibR I F I I RE ACIDH CDNTR f)
HEACIOR STARfup
[4 27/6/0000005-0000206//
r}
9 ACCE SSION NO.
0020153908 TOHUS LEVEL RECORDER FAILS AT HAICH 2 fo T I T LE CORPAUTH GLOWGIA POWER CO.
(
ME MO LTH W/LER 79-133 10 U.S. NRC. HEGION 2. DEC 28. 1979. DOCKET 50-366. TYPE--eWR, MFG--GE. AC--SSI /D ECH y
DATE B979 TYPE O
AVAIL AVAILABILITY - NRC PUBLIC DOCUMENT ROOM. 1787 H STREET. WASHING 1DN D.C.
20555. 608 /P A GE ~~ MINIMUM CONT ROL--0 2 F F F 4
)
t CHAHGE S2 003
{
CATEGDRY 1700005090000 EDITION 0306 AUSTHACT DATE OF EVENT - 120679. POWER LEVEL - 3 00s. CAUSE - INCURRECT REFEkENCE LEVEL INDICAll0N.
WITH RE ACTOR
}J COHP CODE GPC t
2148-#6 0 T A. F AILED UPSCALE INDICATING A HIGH COUNTHY A
'f
(~
IN RUN MODE. T HE TDRUS WATER LEVEL WIDE MANGE NECORDEH.
NARHUW RANGE WATER LEVtL IN TORUS.
SAML EVLMI DCCURRED ON 82/7/F9. DUNING HOTH DCCUNHENCES REGdNDANT LEVEL RE CORDER. 2f48-#6078. INDICATED NDRMAL LEVEL AS DID THE TWO NARNOW H ANCE INDICATORS THIS WAS NOT A REPETITIVE UCCURRENCE.
2148 -H60 F A R E COR DER FAILED UPSCALE DUE TD REFERENCE LEG DN LEVEL
'}
DN 82/T/79. VENT TRANSMllTER. 214 8-NO25 A.
H AVING DR A INEDe UN 82/6/79. THL REFEHENCE LEG WAS REFILLED.
PLUG ON THE MANIFOLD OLOCK VALVE W AS LE AKING.
LEAK WAS CORRECTED.
()
COMPONONY CODL INSTRU-INSTNUMLNTATION AND CONTRDLS KEYWORDS F AI LUHE IRt ACIDR. HWHiHATCH 2 (HWR33 FAILURE. INSTRUMENilFAILORE. INHEHENTtSENSORS (j
SYS T E M CDDE IA-HEACTOR TRIP SYSTEMS I NS T RUMEN T. ABNURM AL INDICAftDNiREACIOR PROTECilDN SYSTEM 8 8MSTR UMENT. SWITCH O
C O
'O O
PAGE S
O 27/6/0000005-0000206//
10 O
.Q SCRAM DISCHARGE VOLUME W A T E R LEVEL NOT TEST ED WHEN REQUIRLD AT HATCH I ECCESSION NO.
00Z0153648 TITLE COHPAUTH GEOHGIA POWER C0.
()
{}
LIR W/LER 79-OH8 10 U.S. MRC. REGION 2. NOV IF. 1979. DUCKET 50-323. TYPE--BWR. MF G--GE. AE--S$1/sECH DATE 19F9 TYPE O
ROOM. 3787 H STREET. WASHINGTON D.C. 20555. (08 /PAGE - MINIMUM MEMO CONT ROL--02 F 62 3 AV 2BLA M I { - NRC PUDLIC DOCUMENT W
y_.
E
(*
0 e
0 27/6/0000005-0000206//
10 PAGE 5
Q ACCESSION NO.
0020153648 g
Yl1LE SCRAM D I SCHARGE VOLU ME WATER LEVEL NOT FESTED WHEN REQUIRED AT HATCH I COMPAUTH GEOHG8A PO W E 54 00.
DATE 59F9 TYPE O
g MEMO LIR W/LER 79-068 10 U.S.
NRC. REGION 2.
NOV 87 1979. DOCKET 50-328. TYPE -eWR. MFG--GE.
AE-SS I /B E CH CONTROL-027623 AVAIL AVAILABILITY - N4C PUBLI C DOCUMENT ROOM. 1717 H STREET. WASHINGTON D.C.
20555. (08 /P AGE - M I NI MUM
{
CHARGE S2.003 g
CATEGORY IF0000 E DI T I ON OROS CukP CODE GPC I
Q CDUNTRY A
g j
ABSTRACT DATE OF EVENT - 18037d. POWEH LEVEL - 095E. CAUSE - NOT PROPERLY SCHEDULED.
A REvlEW OF SURVEILLANCE REQU lHEMENIS REVE ALED THAT HNP-t.SOO 4.
SCRAM DISCHARGE VOLUME WATER LEVEL FUNCTIONAL TEST. HAD NOT BEEN PE R F OR ME D WBTHIM ITS ALLOffED TIME FHEQUENCY ll.E.
IIS IN TE RV AL OF ONCE EVERY 3 MONTHS PLUS GR ACE
{\\
Pt!R IOD OF 3 WLEKS).
IT SHOULD HAVE GEEN PENFORMED BY 20-28-79.
IN ADVERTENTLY LEF T OF F OF LIST OF g
}
SUkvEILLANCE PkOCEDURES SCHEDULED TO DE PERFORMED DUR ING TIME PERIOD IN OUESTION.
IT SHOULD HAVE BEE N g
SCHEDULED FOH 9-30-79. Pf40CEDukE WAS SUCCESSFULLY PEl4 FORMED IMMEDIATELY UPON DISCOVERY OF ITS DEING OWEROUE.
Q COMPONEN T COOC ZZZZZZ-COMPONENT CODE NOT APPLICABLE
}
SYSTEM CODE Nti-54E ACi l v l I Y CONTROL SYSTEMS KEYWORDS FAILUREIREACIOR. BWH8 HATCH I (UWR ) t TES T INTERVALiTESTINGISTOHAGE CONT AINER 8 SENSORS. LEVEL ECONTROs. kOO DHIVESIREACTOR CON T R OL 8 F A I Luf4E e OPERATOR ERROH 5NONLICENSED OPERATOR l
27/6/0000001-0000206//
8I ACCESSION NO.
0020153480 fl1LE INIERMEDI AIC R ANGE MUNI TOR SEIPOINis EXCEED LIMITS AT DRESDEN 3 Q-CORPAUTH COMMONWE ALT H EDI SON CO.
.} ;
OATE 1979 TYPE O
MEMO LTR W/LEH 79-029 10 U.S.
NRC. REGION 3.
NOV 28. 1979. DOCKET 50-249 TYPE--OWR. MFG--GE. AE-S+L l
Q CONTHOL--027563 gt AVAIL AVAILABILITY - NRL PUutIC DOCUMENT ROOM. 1787 H STREET. WASHINGTON D.C.
20555. 808 /PAGE - M INIMUM CHANGE s2 00)
CATEGORY 4700003090000 g
Q EDITION 0805
-} ;
CORP CODE DM S COUNTRY A
ABSTRACT DATE OF EVENT - 180379. POWER LEVEL - 0692. CAUSE - DIRTY CONTACTS.
DURING NORM AL OPERAT IONS.
Q SURVERLLANCE FOUND IRM Wll TO HAVE ROO BLDOK AND Hl-HI HALF SCRAM TRIPS TO DE GREATER 1809/122) THAN Q'
IECH SPEC LIMITS.
l</=
108 AND </= 120).
THE REM AINING CHANNELS IN T Hti SAFETY SYSTEM. AND ALL 10 DE OPEHARLC.
"A" CHANNELS IN THE "B"
S AF ETY SYSTEM WERE TESTED AND PROVED THIS IS THE FIRST OCCUHHENCE OF THIS TYPE AT DH E SDE N.
THE PROBLEM W AS Dlf4T Y CONTACTS ON SELECTOH SW I TCH TSS-302A. MODEL 194x672GF.
Q THE CONTACTS OF THE IHM/APRM SELECTON SWITCH WERE CLEANED.
INN 818 WAS TESTED SAT ISFACTORILY WITHOUT Q
ADJUSTMENT. AND HETURNED TO SERVICE.
COMPONENT CODE INSTRU-INSTRUMENTATION APO CONTROLS SYSTEM CODE IA-NEACIDH 1 RIP SYSTEMS
{}
KEYWORDS FAILURESHEACTOR. BWREDHESDEN 3 ( DWR )iF AILURE, INSTRUMENT $ FAILURE. INHCRENf3 INSTRUMENT. INTERMEDIATE Q
R A N GE i IN S T R UPE N T. SWITCHESET POINTECRUDEREALIDH PkOTECTION SYSTEMiiESI. SY ST E M OPERABILITY 27/6/0000001-0000206//
12 ACCESSION NO.
0020153313 Q
j T!!LE CONTROL HUD DRIVE HYDRAULIC CONTROL UNIT W ATER LEVE L SWITCHES AT ARNOLD COf4P AU TH IOWA ELECTRIC LIGHT L PO WE R CO.
DATE 1979 g
TYPE O
'}
MEMO LIR W/LER 7F-028 TO U.S.
NRC. REGION 3.
SE P OF. 1979. DOCK E T 50-331. TYPE--HWR, MFG--GE. AE-t E CH O
O 27/6/0000005-0000206//
12 CONilNUATION 1 PA 6
I Q
CON T ROL-O R BS2 4 g
}
AVAll AVAILAOILITY - NRC PUOLIC DOCUMENT ROOM. IFl7 H STREET. WASHINGTON D.C.
20555. (08 /PAGE - MBNIMUM CHARGE S2.00)
CATEGORY lF00001090000 Q
EDITRON 0805 g
CORP CtX)E OGN COUNTRY A
AUSTR ACT DATE OF EVEN T - 040SFF. POWER LEVEL - 0004. CAUSE - DEFECifvE PNOCEDURES. DURING THE PERF ORM ANCE OF f
Q PHEVENTIVE M A I N it N AN CE. THIHTEEN CONTHOL ROD DHIVE HYU54 AUL IC Cur 4 TROL UNI T WATER LEVEL SWITCHa'S WOULD Qt NOT RESPOND TO IN813AL WATEN LEVEL INCHEASE TESIS.
THE HCU LEvtL SWI TCHES FUNCTIONED PHOPtHLY O*4 ALL 64E PE A f TEST FLOW CYCLES.
THESE I NS THU ME NT S DETECT WAREN LE AK AGE P AST i tW: HCU ACCUMULATON PISION.
THE Win.WMWLFV 5%fd ET XMM VN 3Pn.WTNTmsrMr%.1 M E XiL.In:YiL.ITTHV h K1SW
.ere w
ME MO LIR U/ LEA 77-023 TO U.S NRC, CEGION 3.
SEP 07e 1979. DOC 2EY 59-33 8, T Y PE--owr, MF G--GE, CE --DE CH i
\\ c,-
e>
c, 27/6/0000001-0000206//
12 (ONTINUATION I
PA 6
s
(}
CONTROL--OI8524
- )
f AVAIL AVAILABILITY - NHC PUOLIC DOCUMENT RDOM, 1F87 H STREE1. WASHINGTON D.C.
20555. (08 /PAGE -- MINIMUM CHARGE S2.00)
CATEGORY 1700003090000
()
EDITEDN 0805
{}
CORP CG)E OGN COUNTHY A
AUSTR ACT DATE OF E VEN T - 040577. POWER LEVEL - 0004. CAUSE - DEFECTIVE PRJCEDURE S. DUR ING T HE PE RF OR M ANCE OF
()
PREVENTIVE M A I N T E N AN CE. THIRTEEN CONTROL RUD DHI VE HYDR AUL IC CONTROL UN I T WATER LEVEL Sw!TCHES wDULD s}
NOT RESPUND TO INIllAL WATER LEVEL INCHE ASE TESIS.
THE HCU LEVEL SwI TCHES FUNCT IONED PROPtNLY ON ALL HEPEAT TEST FLOW CY C LE S.
THESE INS TRU MENT S DE TECT WATER LE AK AGE P AST THE HCU ACCUMULATOR PISTDN.
THE Sw liCHE S ANE GLMS COMP ANY LIQUID LEVEL SW I T C HES.
ENGINEER ING E VALUAT ION INDICATED THAT INITIAL TESTS
(%
MAY Fall IF CO MPH ESS ED AIR IS NOT COMPLETELY DISCHARGED FROM THE INSTRUMEN T BL DC.
ALSO TEST CARTRIDGE
()
VALVE HAS SMALL PORT AND T HUS HI GH FLOW RESTRICTION CAUSING INITIAL FILL PROBLEM.
NORMAL DPERATION FLOW ENTERS BLOCK VIA PISTON NOT CARIHIDGE V ALVE.
CH ANGLD M A I N TEN ANCE PROCEDURES ACCDRDINGLY.
COMPONENT CODE INSTRU-INSTRUMENTAT!ON AND CONIROLS
()
SYSTEM CODE RO-NEACTIVITY LONTROL SYSTEMS
()
KEvwORDS FAILUREIREACTON. HwHiARNOLD (HwRliREFUELING3 INSTRUMENT. SW I TCH 8 SENSONS. LE VEL 8 CONTROL ROD DRIVES 8v ATER 8 NEACTON CONTROL 3 TEST. SYSTEM LwTRABILITYtFAILURC. INSTRUMENf8 FAILURE. ADMINISTRATIVE CON T ROL 3 PROCE DURES i
i AND MANUALSIMAINIENANCE AND REPAIH 3HYOR AULIC SYSTEM 27/6/0000001-0000206//
33 ACCESSION NO.
00Z085292F TITLE TWO APNM CH ANNELS F AIL TO TRlp AT FITZPATRICK
(}
CORPAUTH POWER AUIH. OF THE STATE OF NY
() (
DATE 89 79 l
TYPE O
MEMO LTR w/LER 79-084 TO U.S. NHC. REGION 1.
NOV 06. 3919. DOCKET 5 0-333. T Y PE--UwR. MF G--GE. AE --Se w
()
CON ik DL--02 T 30 9
()
AVAIL AVAILAHILITY - NHC PUBLIC DOCUMENT ROOM. 178F H STREET. WASHINGTON D.C. 20555. (08 /PAGE -- MINIMUM CHARGE S2.00)
CATEGORY 8700005090000
(}
EutilDN 0804
,)
CORP CODE OGO CDUNTRY A
l ABSIR ACT DAIE OF EVENI - 10 09 F9. POWER LEVEL - 0934. CAUSE - SET POINT DRIFT.
DURI NG TEST (FLOW BIAS FUNCT I DN AL l (.
TESTF. AVE R A GE POWEH RANGE MONITOR ( APRM ) CHAN NE LS
- A*
ANO "O" TRIPPED AT A VALUE OF 120.5 AS COMPARED
) -
TO IECH SPEC LIMIT OF m/< 120X OF R A TE D POWER.
REDUND ANT EDUIPMENT WAS OPERA 8EE.
THE CAUSE WAS INSTRUMENT DRIFT AND THE INSTRUMENT BE I NG SE T RIGHT AT THE LIMIT.
PROC EDU RE WAS CHANGED TO REOUIRE f(
CALIBRATION AT 138.54 (4/- 3 54).
REC ALIS R A T I ON WAS COMPLETED AND INST HUMENT S wERE RE TURNED TO SE R V I CE.
COMPONEN T CODE INSIHU-INSTRUMENTATION AND CONTROLS
-}g SYS TEM CODE IA-REACTOM IHIP SYSIEMS i
KEYWORDS FAILUHEtHEACTOR. DwH3FITZPATRICK (BwR)31EST. SYSTEM OPER AS I L I T Y 3 F A ILURE. I NSTRUMENT 8F AILURE. INHERENil SE1 POIN58DRIFTIINSTRUMENT. POWER R ANGE 8 I NS TRU MEN T. Sw!1CH8HEACTOR PROTECTION SYSTEM 2F/6/0000001-0000206//
00Z0552657 TITLE SET POINI DRIFT IN SOURCE H ANGE HDD OLUCK TRIP AT ORESDEN 3
{
CORPAUTH COMMONWEALTH E D S SON CO..
MORRIS. IL
,}
DATE 1979 TYPE O
ME MO 2 PGS. LTR w/RO 79-19/03L-O 10 NRC DIRECTOM ATE OF REGULATORY OPER ATIONS. REGION III. AUG.
6.
I9F9
{'t DOCKET 50-249. T V PE--HwR. MF G--GE. AE--SGI & LUNDY
()
l AVAIL AVAILADILITY - NRC PUOLIC DOCUMENT ROOM. 1717 H STHEET. WASHINGTDN. D.
C.
20555 (08 CENTS /PAGE --
CATEGORY S T0000 3090000
()
EDITION 0303
()
CORP CODE DRS
()
()
l c)
()l' 27/6/0000005-0000206//
1A CDNTINUATION I PAGE 7
()
CCUNTRY A
()
AOSTRACT DATE OF EVENT - 7/I9/79.
POWER LEVEL - 095E.
CAUSE - SET POINT DRIFT.
WHILE PERFORMING SOURCE RANG" MONITOR CALIDRATION. SHM 21 INITIATED A ROD ULOLE At 5.03E5 COUNTS PER SEC OND (CPS) INCRE ASING.
TECH SPECS REOUIHES ROD HLOCK TRIP OF </s 1.OE5 CPS.
SAFETY IMPLICATIONS ARE MINIMAL SECAUSE HEMAINING
{}
CHANNELS WLkE OPE N AH LE AND WDULD HAVE SUPPLIED NECESS ARY ROD ULOCK AT.9BES CPS WHICH IS CONSEHVATIVE
() I 10 T.S.
LIMIT.
PREVIOUS OCCUHRENCE REPORT AS R.O.
79-015/03L-0. DOCKE T 050-249.
CAUSE IS A31HIOUTABLE TO E LE C T R ON I C DH IF T OF HIGH ALAHM SEIPOINT POTENTIOMETER ON MO DULE Z-368.
THE SEIPOINT WAS IMMEDI ATELY AD JU S T ED TO.99ES CPS AND HEPE AT ABILIT Y VERIFIED.
TRIP POINTS WILL DE SET DOWN TO.95ES CPh.
()
COMPONENT CODE INSTHU-INSTRUMLNEATEDN AND CONTHDLS
()
SYSTEM CODE IA-HEAC10H THIP SYSTEMS fT4ET*~ ~iiD f2LVMUVE4XMUIhf QmII[WWn O GrTmfDQfYWTin PN M E NORMT PO1N TMI NS T R UMEN T. SWITCH 3 INSTRUMENT.
(,
seus 0 4we usus CORP Ca.oE DRS b
c Ol 27/6/0000005-0000206//
14 CONTINU%ISON I PAGE 7
l ('
COUNTRY A
Q AB S TR AC T DATE OF EVENT - 7/I9/79.
POWER LEVEL - 095%.
CAUSE - SE T POINT DRIFT.
WHILE PERFORMING SOURCE RANGE MONITOR CALIONATION. SHM 21 INITIATED A ROD DLOCK At 1.03ES COUNTS PER SECore (CPSI INCRE ASING.
TECH SPECS REOUIRES ROD HLOCK TRIP OF </m 1.0E5 CPS.
S AF E T Y IMPLICATIONS ARE MINIMAL SECAUSE REMAINING
{ {
CHANNELS WERE OPEWAULL ANO WOULD HAVE SUPPLIED NECESSARY ROD BLOCK AT 98E 5 CPS WHICH I S CONSE RV A T I VE g
i 10 f.S.
LIMIT.
PR LV I OUS OCCURHENCE REPOR T AS R.O.
79-Ol5/03L-0. DOCKET 050-249.
CAUSE IS ATTRIBUTABLE TO ELE C TRON IC OR IF T OF HIGH ALARM SEIPU I NT POTENIIOMETER ON MODULE Z-868.
THE SETPOINT WAS IMMEDI AIELY ADJUSTED 50.99Eb CPS AND REPE AT AB ILIT Y VERIFIED.
TRIP POINTS WILL ISE SET DOwM 70.95E5 CPS.
Q COMPONENT CODE INSTRU-INSTRUMENTATION AND CONTROL 5 Q
SYS TE M CODE IA-HEACIDH IRIP SYSTEMS KEYWORDS F AILukEIRE ACTOR. DwH ;DRESDE N 3 IBwH)iFAILURE. INSTRUMENT 35ET PO IN T 8 DR I F T 8 8 NST RUMENT. SWITCH 3 INSTRUMENT.
STANIUP H ANGE 8 CONTROL HOD DR IVESI T E ST. SYSTEM OPERASILITY3 FAILURE. I NHE R EN T 27/6/0000001-0000206//
15 ACCESSION NO.
0020552327 TITLE SET POINT DRIFT IN SOUNCE RANGE MONSTOR AT DRESDEN 3 Q
CONPAUTH COMMONwE ALTH EDI SON CD.
]
DATE 8979 TYPE O
MEMO LTR w/LER 79-023 TO U.S.
NHC. REGION 3.
SEP 21. 1979. DOCK E T S0-249. TYPE--owr. MF G--GE. AE -S*L Q
CON T ROL-0 2 7 I I I Q
AVAIL AVAILAulLITY - NHC PUULIC DOCUMENT ROOM. 1787 H STREET. WASHINGTON D.C.
20555. 100 /PAGE - MINIMUM CHARGE S2.003 CATEGORY I700001090000 Q
EDITION 0802 g
CORP CODE ONS COUNTRY A
AtSSIR ACT DATE OF EVENT - 082379. POWER LEVEL - 07S4. CAUSE - DC AMPLIFIES DRIFT.
WHILE PERFORMING WEEKLY Q
SUHVE,ILLANCE (SOURCE HANGL MUNITOR CALIORATION) ON iwo SEPARA1E OCC AS IONS.~ SRM #28 SUPPLICH REQUIRED g
ROD OLOCK THIP AT 8.03E5 EXCEEDING LECH SPEC LIMIT OF < / sr I.0ES CPS.
REMAINING SRM CHANNELS wERE OPERAISLE AND WOULD HAVE PRDVIDED HDD flLOCK.
EVENT HAS OCCURRED DEFORE (HO 879-85).
THE OUTPUT OF THE SHM #28 LOW LEVEL DC AMPLIFIER WAS FOUND TO DR IF T AND DEMONSTR ATED A T EMPE R AT URE DEPENDENCY.
THE EXACT Q
COMPONENT INVOLVED H AS NOT YET isEEN LOCALIZED.
A SUPPLEMENT AL REPORT W I El., DE SutlM I T T ED WHEN THE CAUSL g
IS IDENTIFIED.
THE SRM'S ARE CHECKED WEEKLY.
COMPONENT CODE INSTRU-INSTHUMENTATION APO CONTROLS SY S T E M CODE RA-REACTOR THIP SYSIEMS Q
KEYWORDS FAILUME8 REACTOR. DwR&DHESDEN 3 (DwR); INSTRUMENT. STARTUP HANGEIINSTRUMENT. SwITCHifNSTRUMENT Q
C AL.lf3R A T IONiiEST. SYSTEM OPER Aul LI T YtF AILUNE. INSTRUMENI$ FAILURE. INHERENTISET PotNT;DRIFillNSTRUMENT.
AMPLIFIER & REACTOR PROTECTION SYSTEM
(,
27/6/0000005-0000206//
86 g
ACCESSION NO.
0020850734 TITLE SCRAM DISCHARGE LEVEL-SWITCH FAILS IN THE UNSAFE DIRECTION AT BROWNS FERRY l CORPAUTH TENNESSEE VALLEY AufHORITY Q
DATE 1979 Q
TYPE O
ME MO LTR w/LER 79-011 TO U.S.
NRC. REGION 2.
JUL 2 7.
3979. DOLKET 50-259 TYPE--owr. MF G-GE. AE-TVA CONTROL--026398 Q
AV AIL AV AILAUILI TY - NHC PUBLIC DOCUMENT R(M) M. 1787 H STREEi. WASHINGTON D.C.
20555. tOS /PAGE - M I N I MUM Q
CHANGE S2.003 CATEGORY 1700008090000 EDITION 0099 Q
CORP CLI)E TVA O
COUNTRY A
NIH ACT DATE OF EVENT - 0628F9. POWER LEVEL - 095%. CAUSL - CHUD IN PIVOT PIN AREA.
WHILE PERFORMING St
}
4.8.A-8.
SCHAM DISCHANGE LEVEL SWITCH LS-85 -4 50 WAS F OUNO F AILED IN THE LN S AFE DIRECTION.
THE bA 1
IMOPERAULE CHANNEL W AS M ANU ALLY TRIPPED IN ORDER 10 ALLOW CONI INUED UPERAT ION.
THE REDUNDANT SWITCH Q
WAS OPEHAULE.
THERE HAVE DEEN NO PRLVIOUS OCCLMRENCES.
THE MODEL SL-305-EE-X W AS FOUND 50 HAVE A O
O O
O 27/6/0000001-0000206//
16 CONTINUATIUN I
PAGE 8
Q OUILDUP OF FOHEIGN MATERIAL IN THE PIVOi PIN AkE A WHICH PRE VENT ED MOVEMENT OF THE SWITCH ACTUAfDH ROD.
g THE SWITCH WAS CLEANED. RECALIuHATED. AND F UNCT IONALLY TESTED.
A PROCEDURE WILL DE DEVELilPCU TO PERIOulCALLY FLUSH T Hti SWITCHES.
COMPONENT CODE INSTHU-INSIRUMENTATION AND CONINOLS Q
SYSTEM CODE BA-REACIOR TRIP SYSTEMS g
KE YWORDS FAILUREIREACIOH. t$wR & BROWNS FERRY I (B WR ) i R NST RUMEN T. Sw!TCH8 SENSORS. LEVE L 8 5 TOR AGE CONTAINER 3CONTHOL ROD DRIVES 3 FAILURE. INST RUMENT ICRUDIF A ILURE. I PesENEN T 8 TES T. SYSTEM OPERAttILITYINEACTOR PROTECTION SYSTEM O
D 27/6/0000005-0000206//
87 M
mawmma m e ntm
m
_...... _ _~.,.._....... _.. _ _.
THE MODEL SL-3 E S-E l "I tN.S FOUNO t o Mr.Vt A t;AS OPEHJ.0LE.
T VSE HAVE EEEN NO PREVIOUS OCCONRENCES.
()
()
(>
()
27/6/0000001-0000206//
16 CONitt:UATEUN I PAGE 8
(4 BUILDUP OF FOREIGN M AT ERI AL IN THE PIVOT PIN AkEA wHICH PRE VENTED MOVEMENT OF THE SulTCH ACTUATOM R OD.
()
I THE SulTCH wAS CLEANED. RECALIURATED. AND F UNCT I ONALLY TESTED.
A PROCEDURE w l LL DE DEVELOPED TO PE R IDD ICALLY FLUSH T HE SW I T C HE S.
COMPONENT CODE INSIRU-INS TRUMLNI A T I ON AND CONIRDLS
(}
SYSTEM CODE RA-REACIOR THIP SYSTEMS
/)
REYwORDS FAILURE 3REACIDH. HwH 8HRO WNS FERR Y I (B wR ) 8 I NST RUMEN T. Sw l T CH 8 SEN SORS. LEVE LI STOR AGE CONTAINERICONTHOL ROD DR I VE S I F A I LUH E. I NST RUMENT ICRUD 8F AILURE. I NHEH EN 18 T ES T. SYSTEM UPERAHILITY8 REACTOR PROTECTION SYSTEM
)
27/6/0000001-0000206//
17 ACCESSION NO.
00ZOIS03S8 TITLC SET POINI DR $F T IN SOURCE M ANGE MONI TOR AT DRESDEN 3 (S
COkPAUTH COMMONwE AL TH ED E SON CD.
/)
DATE 1979 TYPE O
MEMO LIR w/LE R 79-055 TO U.S.
NRC. REGION 3.
JUL 03. 3979. DOCKET 50-249. TYPE--BWR. MFG--GE. AE--S*L
()
CONTROL--02b212
()
AVAIL AVAILADILITY - NHC PUBLIC DOCUMENT ROOM. 1717 H STREET. WASHINGTON D.C. 20S55. (08 /PAGE -- MINIMUM
{
CHARGC S2.00)
CATEGORY 3700003090000
(}
EDITION 0090
- )
CORP CUDE ONS COUNTHY A
ADSTRACT DATE OF EVENT - 060879. POWER LEVEL - 0965. CAUSE - INSTRUMENT DRIFT.
WHILE PERFDRMING WEEKLY
(}
SURVEILLANCE. SOURCE R A N GE MONITOR CALIBHAIION. SRM 828 HI CDUNT WAS FOUND TO INITIATE A RDO ULOCK AT g}
1.lOES CDONIS PER SECONO WHICH IS IN VIDLATEDH TO TECH SPEC LIMil OF </= 1.0E5 COUNTS PER SECOND.
THE REMAINING SRM CH ANNE LS WERE ALL OPERATIVE AND FOUND WITHIN T HE DRESDEN SEIPOINT LIMIT. THIS IS THE FIRST OCCURRENCE OF THIS NATURE ON THIS UNIT.
THE CAUSE IS ATTRIBUIED TO ELECTRONIC INSTRUMENT DHIFT.
(}
SR M 825 WAS HE AD JUST ED TO.97ES CPS. AND DIS 700-3 w AS SUCCESSFULLY COMPLET ED.
e")
COMPONENT CODE INSTRU-INSTRUMENTATION AND CONIRDLS SYSTEM CODE IA-NEACTDH TRIP SYSIEMS KEYWORDS FAILUHEiHEACTOR. DwRIDNESDEN 3 (BWR)tlNSTRUMENT. SwlTCHilNSTRUMENT CAllHRATIONITESie SYSTEM OPERABILI TY 8
(}
FAILUHE. I NS TR UMEN i i F A I LURE, IMHERENilSET POINitDRIF18 REACTOR PROTECTION SYST EM 5 INST RUMEN T. STARTUP
,}
HANGE 4
27/6/0000005-0000206//
38 I
ACCESSION NO.
0020850258 j
T I I LE SEE POINI DRIFT IN POWER R AN GE CHANNEL AT LACR DS SE I
CORPAUTH DA!HYLAND power COOPEHATIVE i
DATE 1979 l {
TYPE O
}
I MEMO LIR w/LER 79-053 TD U.S.
NRC. REGION 3.
JUN 2 7.
1979. DOCKET 50-409. T Y PE--awR. MrG--AC. AE -SAL CON T ROL--0 26 8 8 0 i
AVAIL AVAILABILITY - NRC PUBLIC DOCUMENT ROOM. 3717 H STREEl. w A SHIN GT ON D.C. 20SSS. (08 /PAGE -- MINIMUM
(
CATEGONY 1700008090000 EDITION 0090 CORP CODE AYS
()
COUNTRY A
{)
AUSTRACT DATE OF EVEN T - 0h0179. POWER LEVEL - 0334. CAUSE - INSTRUMENT DRIFT.
DURING REACTOR DPERATION. A ROUTINE SURVE I LL AN EE IEST REVEALED THAT THE UPSCALE SCRAM SETPOINT DN POWE R RANGE NUCLE AR INSTHUMENT CHANNEL 6 EXCEEDED T.S.
A.O.2 2 LIMIT OF 120% OF RATED T HERM AL POWER.
T HE DISCOVCRLD SETPOINT V ALUE (j
WAS R28 8% DF RATED THERMAL power. REDUNDANT PO WER R ANGE NUCLE AR INSTRUMENT CHANNELS S.
7 AND 5 WERE
()
OPENAULE AND UNAFF EC TE D.
INSTHUMENT All DN SETPOINT DRIFT DUE 10 UNDETERMINED CAUSA T I VE F ACTD4.
THE SCRAM SETPOINI WAS RESE T TO THE PR E SCR IDED VALUE.
A LATER CHECK OF SEI POI N T INDICATED NO CHANGE IN SE T T ING FROM THE PRE SCR I HED WALUE.
SIMILAR DCCURRENCE8 LER 77-06.
()
COMPONENT CODE INSIRU-INSTRUMLNTATIDN AND CONTROLS g
SYSTEM CODE I A-RE ACIOR TRIP SYSTEMS I)
()
()
()
27/6/0000001-0000206//
18 CDNTINUATION I PAGE 9
I
()
KEYWORDS F A ILUHE iHE ACIOR. DwRILACROSSE I H wH ) i lN S T RUM EN T. SwliCHilNSTRUMENT. power R ANGE 8 T EST. SYSTEM OPEHABILITYi
()
FAILUHE. I NS T R UME N T 3 F A I LUHE. IhHERENT35ET POIN T 3 DR IF l iREACTOR PkUTECTION SYSTEMilNSIHUMENT CALIBRAllON 27/6/0000003-0000206//
19
(}
ACCESSION NO.
0020150337
()
TITLE SCRAM DISCHANGE V OLU ML HI-LEVEL SwlTCH FAIL AT HATCH I COH P AU TH GEOHGIA POWLR CO.
DATE E 9 F9
_ (]
IYPE O
()
MEMO LTR w/LER 79-038 TO U.S.
NHC. REGION 2.
JUL 02. 1979. DOCKE T 50 -J2 8. TYPE--BwR. MF G--GE. AE --SS I /H E CH
[L CON,f rot.--Op t S 2,.
j _
w rw..w..
w.~.............. ~..........
a.,
- w.......
y CYSTEM CODE RA-CEACTOR TRIP SYSTEMS
()
)
(?
e) 27/6/0000005-0000206//
38 CONTINUATION 2 PAGE 9
(}
KE YW DRDS F AILURE IRE ACIOR. OWR 8 LACROSSE 6BWR)3 INSTRUMENT. SWIICHilNSTRUNENT. POWER R ANGEITES!. SY S I *> DPERASILITV3 f)
F AI LUR E. I NSTR UMEN T 8 F AILURE. t hHER EN T 3 SE T POIN T 8 DR IF T &RE ACIDH PROTECT ION SYSTEM 8 INSIRUhEN T CALIBRAIRON 27/6/0000001-0000206//
19
(} ' ACCESSION NO.
0020150817 r])
fliLE SCRAM DISCHARGE VOLUML HI-LEVEL SW I TCH FAIL AT HATCH I CORPAUFH GEORGIA POWER CO.
DATE 1979
(}
TYPE O
{}
MEMO LTH W / LE R 79-0 J8 TO U.S. NHL. REGION 2.
JUL 02. 1979. DOCKET 50-323. TYPE--BWR. MF G--CE.
A E --SS I /U E CH I
CONTROL--026152 AVAIL AVAILABILITY - NRC PUHLIC DOCUMLNT R DG M. 171T H STREET. WASHINGTON D.C.
20555. (OS /PA GE -- MINIMUM
(}
{}
CATEGORY 1T00003090000 EDITION 0098 COffP Ct.DE GPC
[
AB CT DATE OF EVENT - 065379. POWER LEVEL - 000s. CAUSE - NOT YET OETERMENED.
WHILE FUNCT IONALLY TESTING
/
SCRAM DISCHARGE VOLUME HI-LEVEL SWI TCHE S C l l-NO B JA.B. THE SWITCHES WERE FOUND TO B E INOPERABLE.
R E AC T OR WAS IN IHL REFUELING MODE AND REDUND ANT SWIICHES Cll-N083C.D WERE OPER AULE.
LEVEL SWI TCHES t
(}
Cll-N013A.D WERE O PE NE D F OR INSPECTION.
T HE F LO A T W AS FDUND TO DE BENT DN OOTH SWITCHES G BINDING
.} l AGAINST SIDE OF FLUAT CHAMBER. FLUAT RODS WERE S TR A I GHTE NE D. SWITCHES REASSE MBLED E FUNCTIDNALLY TESICD.
VENDOR WILL PERFORM INSPECTION OF REMAINING SWITCHES & DETERMENE CAUSE OF FAILURE.
A FOLLOW-UP REPORT WILL BE SUBMil f ED.
(}
COMPONENT CODE INSTRU-8NSTRUMENTATION AND CONTROLS e')
SYSTFM CODE RA-REACIDR TRIP SYSTEMS KEYWO9DS FAILURE 84EACf0R. UWR3 HATCH I ( HWR ) 8 REF UEL I NG I T EST. SYSTEM OPER ASIL I T YiCONT ROL RODS tDISCHARGE t I N S T R UM E N T. SWITCH; FAILURE. I NSTRUMENT 8 F A ILURE. INHERLNT 8 DAMAGE 8 51 DRAGE CONTAINERIREACTOR PROTECTION
(}
SYSIEMISENSORS. LEVEL
/)
27/6/0000005-0000206//
20 ACCESSION NO.
0020150510
()
TITLE CONTROL-ROD-OUT OLOCK FUNCTION FAILS AT MILLSTDNE.
.])
CORPAUTH NORTHEAST NUCLEAR ENERGY CO.
DATE 1979 TYPE O
()
MEMO LIR W/LER 79-015 TO U.S.
NRC. REGI ON 3.
JUN 22. 19T9. DOCKET 50-2A5, T Y PE--B WR. MF G--G E. AE--EB ASCO
.)4 CONT ROL--026 t A S AVAIL AVAILABILITY - NRC PUOLIC DOCUMENT ROO M. 3787 H STREE T.
WASHINGTON D.C.
20555, 108 /PAGE -- MINIMUM CHARGE S2.00)
()
CATEGORY 8700003090000
{} l EDITION 0098 CORP CODE AIG t
COUNFRY A
(
ABSTR ACT DATE OF EVENT - 052379. POWER LEVEL - 000s. CA USE - WORN LIMIT SWITCH.
ON MAY 28. 1979 AT 2330 HOUR S.
,}
DURING REFUELING UPER AT IONS. IT WAS NOTED THAT NO CONIROL RDO OUT DLOCK DCCURRED W HE N THE REF UEL BRIDGE WAS UVER T HE C UR E WITH A FUEL ASSEMBL'/ LOADED DN T HE GRAPPLE.
THE PRIM ARY CAU bE OF THE OCCURRENCE WAS ATIRIBUTED TO A WORN TRACK LIMIT SWITCH.
THE FUNCTIONAL SURVEILLANCE W AS ACCOMPLISHED IN SUCH A WAY
{
THAI IHL WORN SWITCH WAS NOT DETECTED.
THE SW I T CH W AS REPL ACED AND T HE SURVE ILL ANCE PROCEDURE W AS t) e CHANGED.
COMPONENT CODE INSIRU-INSTRUMENTATluN Ate CONTROLS SYSTEM CDDE IF-OTHR INST SYS NOT REOD FR SF T Y
()
KEYWORDS FAILURE 8 REACTOR. BWRIMILLSIDNE 3 (OWR)8 REFUELING 3 CONTROL ROD DRIVES 4CONIROL SY ST EM 8 F A I LUR E. INSTRUMENT 4
- }
INSTRUMENT. SW I T CH iF AILURE. INHERENT 33NSTRUMENT. PROTECTIVE 27/6/0000005-0000206//
21
()
ACCESSION NO.
00201500A7
)
T 8 7 LE SET POINT DRIFT IRM DOWN SC ALE ROD OLDCK AT DRESDEN 3 s
()
27/6/0000001-0000206//
28 CONTINUATIDN t PAGE lo
(}
COMPAUTH COMMONWEALIH EDISDN CO.
gg DA1E 1979 TYPE O
MEMO LTR W/LER 79-082 10 U.S.
NRC. REGION 3.
JUN 18. 3979. DOCKET 50-2A9. TYPE--BWR, MF G --G E.
AE--S+L
()
CON T ROL--026081 (g
AVAll AVAILABILITY - NRC PUBLIC DOCUMENT ROUM. 3717 H STREET. WASHINGION D.C.
20555. 808 /PAGE -- MINIMUM CHARGE S2.00)
CATEGDRY 8700003090000 i
L
()
EDITION 0098
()
CORP CODE DRS MDTM137 O
I m....
y TITLE SET POINT ORIF T IRM DOWNSCLLE ROD CLOC:t AT DRESDEN 3 O
C O
2 F/6 /000000 3-0000206//
21 CONTINUAllON 3 PAGE to p
CORPAUTH COMMONuE ALTH EDE SON CO.
Q I DATE 1919 TYPE O
MEMO LIR w/LEN F9-012 10 U.S.
NRC. HEGION 3.
JUN 18. 1979 DOCKET 50-249. TYPE--ewR. MF G--G E. AE-S
- L Q
CON T ROL-0 2608 I Q
AVAIL AVAILABILITY - NRC PUOLIC DOCUMENT RuuM. 1757 H $1NEET. WASHINGTON D.C.
20555. 808 /PAGE - M I N I MUM CHARGE S2.003 CATEGORY IF00005090000 Q
EDlituN 0098 t}
CORP CODE DRS l
}
COUNTRY A
ASSTRACT DATE OF EVENT - 0524F9. POWER LEVEL - 0964. CAUSE - INSTRUMENT DRIFT.
WHILE PERFORMING MONTNLY Q
SUHvEILLANCE INM Il DOwMSCALE ROO BLDCK WAS FOUND TO 1 RIP At 4/125 OF FULL SCALE INSTEAD OF TECH. SPEC g
REOUIRED TRIP OF S/12S OF FULL SCALE.
REMAINING CHANNELS IN THE
- A*
SAFETY SYSTEM AND ALL CHANNELS IN THE "O"
SAFEfY SYSTEM WERE OPERABLE AND WEHE WITHIN DRESDEN SE T POI NT LIMITS. NO RECORD OF AN Y PR IOR OCCURHENCE OF THIS N AT UNE.
THE CAUSE W AS ATTRIBUTED TO E LEC TRONIC INSINUMENT DR IF T.
IRM 88 WAS Q
READJUSTED TO 6/3 25 DECREASING AND SURVEILLANCE WAS SUCCESSFULLY C04'LETED.
}
COMPONENT CODE INSIRU-INSTRUMENTATION APO CONTROLS SYSTEM CODE IA-REACTOR THIP SYSTEMS KEYWOHOS FAILUREIREACTON. owr 3DRESDEN 3 I BwR ) 31 NS TRUMEN T. SWITCHilNSTRUMENT. INTERMEDIATE RANGEikEACTOR Q
PROTECTION SYS TE M 5 TEST. SYSIEN OPE R AS I L I T Y 3 F A I LURE. INSTRUMENT 3 FAILURE. INHERENTISET POINiiORIFT
]
l 27/6/000000l-O000206//
22 l
ACCESSION NO.
0020I50045 h
Q TITLE SET POINT DRIFT IN INTERMEDIATE RANGE MONITOH AT DHESDEN 3 Q
CORPAU'H COM Mo*e wE A L T H E D I SON CD.
DATL 19 F9 TYPE O
2 Q l!
l Q
ME MO LTH w/LER 79-051 TO U.S.
NRC. REGION 3.
JUN 82. 1979. DOCKE T 50-249. TYPE--BWR. MF G--GE. AE-S
- L CON T ROL-02607 9 AVAIL AVAILADILITY - NHC PUBLI C DOCUMENT ROOM. ITIF H STREET. wA%HINGTON D.C.
20555. 108 /PAGE - MINIMUM CHANGE $2 005 Q
CATEGORY I700008090000
-}
EDITION 0096 CORP CCDE ONS COUNTRY A
Q AUSTRACT DAIL OF EVENT - 0S1779. POutR LEVEL - 0964. CAUSE - INSTRUMENT DRIFT.
wHILE PERFORMING MONTHLY
}
SUHWEILLANCE. IRM 37 s AS F OUND TO TRIP AT 109/825 INS TE AD OF TECH. SPEC. REQUIRED THIP TABLE 3.2.3 OF
</= 10S/I25 OF FULL SLALE.
REMAINSNG CHANNELS IN THE
- B" SYSTEM APO ALL CHANNELS IN
- A*
SAFETY SYSTEM WERE OPE N A B LE. LAST OCLURRENCE OF THIS NATURE W AS REPOR TED IN H.O.
78-03.
THE CAUSE WAS ATTRIBUTED TO Q
I N51R UME N T DRIFT.
IRM stF WAS READJUSTED 10 106E INCHEASfNG.
.) !
COMPONEN T CODE I N S TRU-I NS T RUM EN I A T I ON AND CONih0LS SYSTEM CODE IA-NEACION TRIP SYSTEMS KEYwuRDS FAILUMEikEACTOR. owr 3DRLSDEN 3 IBwHilINSTRUMENT. SW I T CH 5 I NST RU MEN T. INTERMEDI ATE R ANGE ilNSTRunegnet Q
CALBbHAllON8 TEST. SYSTEM OPER AOILI T YiF A ILUWE. INSTRUMLNTIF A ILURE. INHERENTISET POINTEDRIFI8 REACTOR
,)
PROTECTID4 SYSTEM 27/6/0000003-0000206//
23 Q
ACCESSION NO.
0020149703 Q
TliLE SCHAM ACCUMULATOR $ LEVEL SWITCH FAILS AT BROWNS FERRY 2 CORPAUTH IENNESSEE VALLEY AUTHORITY DATE 1979 Q
TYPE O
Q MEMO LTR w/LER 79-309 TO U.S.
NRC. REGION 2.
JUN 06 3979. DOCKET 50-260. T YPE--O wR. seF G-G E. AE-T W A CONTROL--025954 AVAIL AVAILAUILITY - NRC PUHLIC DOCUMENT ROO M. 1717 H STREET. WASHINGTON D.C.
20555. 808 /PAGE - M I N I MUM Q
CHARGE S2.001 0
CATEGORY IF00003090000 0
0 O
O 27/6/0000001-0000206//
23 CDNTINUATION 3 PAGE St O
'a ' " o" O-'
CORP CODE 1VA COU*tiR Y A
i Q
- AUSTRACT DATE OF EVENT - 058079. POWER LEVEL - 000X. CAUSE - NOT DETEkMINEO.
DUR IN G A REFUELING OUTAGE. WHILE O
PE R t OR M I NG EM I ~50. SCRAM ACCUMUL A TON LE VEL Swl TCH LS-2-65-34 FOR ORD*S 58-39 ADO 55-19 wOULD NOT OPERATE TO GIVE ANNUNCIATION FOR HIGH ACCUMULA10N LEVEL.
THEkL ARE NO RE DUND AN T SYSTEMS.
PREvtOUS OCCUHRENCEI 259/F8-36. 259/FF-25.
CAUSE OF T ed. FAILUEE OF Su l ICH LS-2-05-34 GEM *S INC.. LIQUID LEVEL SWITCH. GE PART NRil7Cl4J4PI. I S UNKNOWN AS Sul1CH I S E NCLOSED IN EPORY & CLEANING OF ACT U A T OR D I D PeO T Q
CORRECT PHOBLEM.
SWITCHES wENE HEPLACED & SUBSE QUE N T SYST E M DPERATRON W AS SATISFACTORY.
Q COMPONENT CODE INSTHU-INSTRUMENTATION AND CONTROLS
. 00%R El 00-GWMD 9RDP OYBOCCD
CCTEGDRV IFC0035190&GW f
e 4
CN r)
C'
()
2F/6/0000001-0000206//
23 CONT I MJAT E UN I
PAGE II
(]
EDITION 0097
/) <
CORP CODE TVA COUNTHY A
AUSTRACT DATE OF EVENT - 053079. POWER LEVEL - 0004. CAUSE - NOT DE TERMI NED.
DURING A REFUELING DUTAGE. WHILE
(}
SCRAM ACCUMULAT OR LE VEL SWI TCH LS-2-85-34 F DR CRD*S 58-39 AND 58-89 WDULD NOT
/) '
OPENATE TO GIVE ANNUNCIATION F OR HIGH ACCUMULATOR LEVEL.
THERE ARE NO REDUND AN T SYSTEMS.
PHEVIOUS DCCUHRENCE:
259/F8-36, 259/FF-25.
CAUSE OF T HE FAILURE OF SW I TCH LS-2-e5-34 GEM *S INC.. LIQUID LEVEL j
SWITCH, GE PART NRIIFCl4J4Pl. IS UNKNOWN AS SWITCH IS ENCLOSED IN EPOXY & CLEANING DF ACTUATDR OlO NOT
(}
CORRECT PROBLEM.
SWITCHES WERE REPLACED & SUBSEQUENT SYST E M DPERATIDN W AS SATISFACTORY.
() i COMPONENT CODE I NS T RU-I NS T RUM EN T A T I ON AND CDNTROLS d
SYS TE M CODE IA-NEACTOR 1 RIP SYSTEMS KEYWORDS FAILUMEtREACTON. H WH ;URO WN S FE RR Y 2 IBWRl8 CONTROL RDO DR IVE S I S T OR A GE CDNT A INER 8 SENSOR S. LEVEL 3 FAILURE.
(}
INSTRUMENT 38HSTRUMENI. SWITCHi1EST. SYSTEM OPER AHILI T Y 3 REF UEL ING p}
27/6/0000005-0000206//
24 ACCESSION NO.
002014873F
() I
()
TITLE SLT PUINT DHIFT IN LEVEL SWITCH AT HATCH 2 CDHPAUTH GE DHG I A FUWEN CD..
DAMLEY, GA
[
DATE 1978 TYPE O
(}
MEMO 2 PGS. LTR W /R O 50-366/8978-67 10 NRC DIRECTOR OF I & E. REGIDN II, NOV. 27, 1978. DOCKET S0-366,
.}
T Y PE-B W H, MFG-GL, AE -SS I & BECHTEL AVAIL AVAILABILITY - NRC PUOLIC dor.UMENT ROON. IFIF H STREET. WASHINGTON. D.
C.
20555 IOS CENTS /PAGE --
(}
CATEGORY 3700008090000
.-}
EDITBON 0095 CORP CODE GPC CDUNTRY A
(}
AUSTR ACT DATE OF EVENT - 18I278.
POWEN LEVEL - 392.
CAUSE - INSTRUMENT ORIFT.
WITH THE REACTOR IN THE RUN
(}
MOUE. WHILE PERFOHME NG PROCEDUkE HNP-2-S202 EN 2B28-NORFD. THE INSTRUMENT WAS FOUND TO BE OUT OF TULERANCE.
(TECHNICAL SPECIFICATION 332, IABLE 33.2-83.
THE ACCEPT AGLE TDLER ANCE R ANGE IS PLUS OR MINUS 0.3 INCHES OF THE 60 INCH RANCE.
THE INSTRUMENI WAS DUT OF TOLENANCE DUE TO THE SETPOINT
(}
DRIFTING BY AS MUCH AS 8 I NCHE S.
W HE N THE I NS T R UME N T COULD NOT BE CALIBHATED CO RR E C T LY. IT WAS
()
REPLACED AND PROCEDURE HNP-2-5202 PERFOR MEO SA T I SF ACTORILY.
COMPONEN T CODE INSBRU-INSTRUMLNTATION APO CON IROL S SYSTLM CODE IA-REACTOR TRIP SYSTEMS
(}
KE Y WURDS FA ILUME IRE ACTON. BWR$ HATCH 2 IDWR38REACTUN STARIUP E XPER IENCE t I NST RUMENi e SWI TCH 8 3 NS TRUMEN T C AL IBR AT IDN S
{}
SENSORS, LEVELITEST. SYSTEM OPEHABILITY8 FAILURE, INS T RUME N T 8 SE T POINf 8DRIF T IRE ACTOR PROT E C T IDM SYSTEM 5 FAILURE. INHERENT
(}
27/6/0000005-0000206//
25
.)
ACCESSION NO.
0020347J8F TITLE SEI POINT DR IF T I N F LOW COMPARATOR AT NINE MILC POINT I CORPAUTH NI AGAH A MOHA WK POWER CDNPOHATIDN
(}
DATE 1979 l}
TYPE O
MEMO LTH W/LER 79-005 TO U.S. NRCe REGION le MAR 83. 19F9. DOLKET 50-220. T Y PE--B WH. MF G--GE, AE--O CONTROL--02S26S gp AVAIL AVAILABILITY - NRC PUBLIC DOCUMENT ROOMe 178F H STREET. WASHINGTON D.C. 20S55. (08 /PAGE -- MINIMUM
]' )
CHARGE S2 005 CATEGORY 8700008090000 EDITION 0093 Q
CORP CODE NMP
]'
COUNTRY A
ABSTRACT DATE OF EVENT - 028879. POWER LEVEL - 0714. CAUSE - DEFECTIVE COMPARATOR.
DURING STEADY STAIE OPERATION. PERFORMANCE OF SURVEILLANCE TEST NI-ISP-IC26. FOUND FLOW COMPARATOR sll DID NOT t'RODUCE NOD
(#)
OLOCK WITHIN REOutRED 1DLERANCE, REOUIRLD SETPOINT IS I44 */- 2.
T HE UNIT WAS F OUND AT 202.
THis
)
CONDITION HESULTED IN MIM8%AL SAFETY I MPLI C A T I ONS.
REPLACED DEFECTIVE FLOW CO MP AR A T OR AND THE SE T POIN T l
C)
()
(?
1p 27/6/0000001-0000206//
25 CDNTINUATIDN I PAGE 12 O'
WAS LEFT AT 84%.
g COMPONENT CO DE INSTRU-INSTRUMENIATION AND CONTROLS SYSTEM CODE IA-HLACIDR INIP SYSTEMS KEYWORDS FAILUHE3REACTON. HWR$NINE MILE POINT I (OWRl88HSikUMENT. SWITCH $ INSTRUMENT CALIBRATION 8 TEST, SYSTEM
(}
DPE F AO ILI T Y 3 F A ILURE, INSTRUMENT 5FAILUHE. INHERENT &RE ACTOR PROTECTIDN SYS TE M 8 SE T POINT 8 DRIFT gg 27/6/0000005-0000206//
26 ACCESSION NO.
0020147301
()
TITLF CHD SCRAM ACCUMULATOR LEVEL SW I TCHES F A IL ID OPERATE AT HIG ROCK POINT
{j CDRPAUTH CDNSUMENS POWLH CO.
r.
(,
usou~.........
...muu som6=
s.NO THE SETPot%T CONDI T RUM KE SULI ED IN CINICAL SAFETY I MPLI C At l ONS.
KEPLACED DEFECTIVE FLO3 COMPARATOR.
l cy
')
C' r) 27/6/0000003-0000206//
25 CONTINUATION 3 PAGE 12
[}
WAS LEFT AT 844.
/) J f COMPONEN T CODE INSIRU-INS T R UMEN T A T I ON AND CONTROLS l
S YS TE M CODE I A -H E A C I OR THIP SYSTEMS
^
KEYWORDS FAILUHE5 REACTOR. HWR$NINE MILE POINT I (OWR)&lNSINUMENT. SW IT CH t lNST HUMENT CALIBRATION 3 TEST. SYSTEM
(}
OPE R AB IL R T Y 3 F A ILUR L.
INSTRUMENf8FAILUHE. INNERENf3 REACTOR PROTECTIDN SY STEM 8 SE T POINT 3DREFT
/)
27/6/0000003-0000206//
26 ACCESSION NO.
0020147301
()
T I T LE CHD SCHAM ACCUMULATOR LEVEL SWI TCHES FAIL TO OPERATE AT BIG ROCK POINT s}
CDRPAUTH CONSUMENS PowEN CO.
I DATE 3979 TYPE O
()
ME MO LTH W/LER 79-005 TO U.S.
NRC HEGI DN 3.
MAN 15. 3979 DOCKET S0-I55. T Y PE--RW R. MF G--G E. AE-- BE CH s}
CONTROL--025195 AVAIL AVAILABILITY - HNC PUOLIC DOCUMENT RuuM. 1717 H SIREET. WASHINGTON D.C. 20555. 608 /P A GE -- MINIMUM CHANGE S2.00)
()
CATEGDRY IT00003090000
,)
EDITION 0093 CORP CODE CPC COUNTHY A
(}
ABSTRACT DATE OF EVENT - 02I979. POWEH LEVEL - 0002. C A USE - SWITCH FAILURE.
OURING PREVENTIVE MAINTENANCE
}
TESTING OF CONTROL ROD DRIVE SCRAM ACCU MUL A TOR LEVEL SWITCHES. 7 OF 32 SWI TCHES FA ILED TO DPtRATE.
THE PLANI IS SHUF DOWN FOR REF UELING AND NO HAZ ARO OCCURRED.
THIS TESTING IS THE FIRST IN A NEW PRE VE N T I VE l
M A I N T E N ANCE PROGH AM FDH THESE Sw3TCHCS.
SWITCH FAILUHE COINCIDENT WITH ACCUMULATOR BL ADDER FAILURE
- (}
WOULD RE SULT IN HEDUCED SCRAM CAPABILITY AT LUw HEACIDH PHESSURES.
FIVE REED SW I T CHES AND ONE
(}
s AURILIARY kELAY WERE REPLACED AND Two UNITS HE DUIRED HEPOSI T IONING OF THE REED SW I TCH.
COMPONENT CODE I NS T RU-I NS 1 HUM EN T A T I ON AND CON TROLS SY S T E M CODE IE-0THH INST SYS HEOD FOR SAFE 1Y
(%
KE Y WOR DS F AILUHE IRE AC ION. OWH iHIG HOCK POINT GUWR38tNSTRUMENT. SW l iCH3 SENSORS. LEVELt ACCUMULATORSICONTROL ROD
()
DRIVES 8CONTHOL HUD SCRAM MECHANISMiFAILUHE. IN ST RUME Ni iF A I LUN E. SIMULTANEUUS8 TEST. SYSTEM DPER AS ILI TY 3 REFUtLING (1
27/6/0000003-0000206//
27
.)
ACCESSION NO.
00Z0146688 TITLE APRM SCRAM TEST NOT CDMPLE TED WHEN RE0ulHED AT MONTICELLO CORPAUTH NOM f HERN ST ATES POWEH CO.
(}
DATE 1979
-]
1YPE O
MEMO LTH w/LER 79-002 TO U.S.
NRC. REGION J.
FEB 09. 19F9 DOCM E T 50-263. TYPE--UwR. MF G--GE. A E--U E C H CO N T HOL--02 SOS 4
{,
AVAll AVAILAHILITY - NHC PUBLIC DOCUMENT ROOM. 3 717 H STHEET. WASHINGTON D.C.
20555. (08 /PAGE -- MINIMUM
.}
CHAkGE S2 00)
CATEGORY 8700003090000 EDITION 0098
{ ',
C OHP CODE NSP
()
i I
COUNTHY A
ADST R ACT 041E OF EVENT - 053879. POWEH LEVEL - 3004. C AUSE - LICENSED DPER ATOR ERROR. OUR ING NORM AL OPER AT I ON, THE WEEKLY APRM FUNCTIONAL SCRAM TEST W AS NOT LOMPLETED WITHIN THE T I ME PERIOD ALLOWED FOR WEEKLY (j
TECHNICAL SPECIF ICA T ION 4. 4. A HEDUlHES THIS 1EST TO BE CONDUCTED WEEKLY.
NOT A REPElliBVE
()
OCCUHHENCE.
S UH SE DUEN T TESIS COMPLEILD SATISFACTUNILY.
APRM FUNCT ION AL S CH AM TEST NOT COMPLE TE D WITHIN ALLOWAOLE TIME PERIOD DUL TO MI SUNDERSI ANDING CUNCERNING TEST COMPLETION HY SUPT., DPENATIONS.
INVOLVED PERSON REMINDED OF TECH. SPEC. REOUIHEMLNT AND IMPORTANCE OF COW LETING TEST WITHIN ALLOWABLE
{j IIME PERIDO.
()
COMPONENT CODE INS TRU-INSTRUMENT AT I DH ANO CONTROLS SYSTEM CODE I A-HE AC TOR TRIP SYSTEMS KEYWORDS FAILURE 3HEACTOR. BWH8MONTICELLO (DwRliTEST I NT ERVAL I T EST I NG 3 I NST RU MEN T. SWITCHiINSTRUMENT. POWfR RANGE 3
()
H E AC T OH PHOIECTION SYSTEM 8 FAILURE. OPE R ATOR ENROR3 LICENSED OPERAIDH8 COMMUNICATION
()
()
()
C) s)
2T/6/0000005-0000206//
20 PAGE 33
(}
ACCESSION NO.
00ZOI46505
(}
T11LE EXCESS OXYGEN IN ORYWELL AT MILLSIONE I CORPAUTH NORTHEAST NUCLEAR ENERGY CO.
DATE 1979
(-}
TYPE o
()
MEMO LTH W/LER 78-OJI TO U.S.
NRC. REGION I.
JAN 87. 3979. DOCKET 50-245. T Y PE--H wR. MF G--GE. A E --E D A SCO CONIROL--023350 AVAIL AVAILABILITY - NHC PUBLIC DOCUMENT RDUM. 1717 H SikEET. WASHINGTON D.C. 20555. (OS /PAGE -- MINIMUM gg CHARGE $2 003
}
CATEGORY 1700005090000 MWC
@O h
b 9
i
.{ p 27/6/0000003-0000206//
28 PAGE 13 ACCESSION NO.
0020146505 g
{.
TITLE EXCESS OKYGEN IN ORYWELL AT MILLSIDNE I CORPAUTH NORTHEAST MUCLEAR ENENGY CO.
DAIE 19F9
{
1YPE O
g MEMO LTR w/LER 78-038 TO U.S. NRC. REGION 1.
JAN 87. 1979. DOCK ET 50-245. TYPE--ewR. MFG-GE. A E-E B A SCO CON f ROL-0 2335 0 AVAIL AVAILABILITY - NRC PUBLIC DOCUseENT ROOM. 1787 H SIREET. WASHINGTON D.C.
20555. (Os /PAGE - MINIMUM Q
CHARGE S2 00) g CATEGORY 1700005090000 i
EDITION 0098 CORP CODE AIG Q
COUNTRY A
g AOSTRACT DATE OF EVENT - 128878. power LEVEL ~ 3003. CAUSE - DEFECTIVE PROC E DURE S.
THE AUDITOR $ DE NT IF IED A SURVEILL ANCE REQUIREMENT (NEDUCED HIGH FLUM APHM PRION TO STARTUPI THAT HAS NOT BEEN ACCOMPLIEHED.
PRIDR TO STARIUP. SINCL I15 ADDITION INTO i tt. TECH. SPEL ALTHOUGH THE SUR VE I LL ANCE WAS NOT PERFORMED Q
PRIOR TO ST ARIUP. IT WAS PERFOHMED MONTHLY AS A POHTION OF THE FLOW BIASED HIGH FLUE APRM SURVEILLANCE.
g 1HE SURVERLLANCE W AS NOT PERFOHMED AT THE PkESCRISED FREQUENCY DUE TO A CLERIC AL ERROR wH3CH 1545 RE F LEC T E D IN A PROCEDUH AL DEF ICIENCY.
THE SUBJECT PROCEDURE HAS BEEN R EV I SE D.
COMPONENT CDDE Z Z Z Z 2 2-COMPONE NT CODE NOT APPLICABLE Q
SYSTEM CODE IA-HEACTOR TRIP SYSTFMS
%.s t
]
KE YwoRDS F A ILUHL 5 HE AC TOR. swr 3 MILLSTONE I (BwRllTEST INTERVAL 8 TEST ING 8 INSTRUMENT. POWER RANGE 3RFtfeUq STARTUPt FAILURE. ADMINISTRATIVE CONTHOLIPROCEDURES AND M ANUALS3 REVIEW 3RE ACTm PROTECTI(N SYSTEM 3dNS43UMENT.
SWITCH 27/6/0000001-0000206//
29 ACCESSION NO.
00F0844949 TITLE SET POINT DRIFT IN NUCLE AR POWER RANGE CHANNELS AT LA CROSSC p
COMPAUTH DAIRYLAND POWEH CDOPERATIVE. LA CROSSE. wl g
DATE 1977 TYPE O
MCMO 3 PGS. LTR w/RO 77-06 TO NRC DIRECTORATE OF REGULATORY OPER ATIDMS. REGION III. NOV. 23. 1977. DOCKET p
50-409 T YPE-Bw H. MFG--AC. A E-SG T T. 8.UPO Y g
AVAIL AVAILAURLITY - NRC PUBLIC DOCUMENT ROOM. 1787 H S1REET. WASHINGTON. D.
C.
20555 (OS CEN TS/PAGE -
MINIMUM CHANGE S2.003 CATEGORY 170000:090000 p
EDITION 0089
}
CORP CODE AYS COUNTRY A
ASSIRACT DATE OF EVENT - 102577.
PO WE R LEVEL - 02.
CAUSE - INSTRUMENT DRIFT.
Ot.5t I NG A REFUELING OUTAGE. A p
HOUTINE SUH VE I LL AN CE TEST HEVE ALEO THAT THE SCRAM SE1 POINTS ON NUCLEAR IN S T RUMEN T POWER RANGE CHANNCL
]
5 AND 6 HAD DRIFTED DEYOND TECH SPEC LI MI TS.
THE CAUSE WAS NORMAL INSTRUMENT DRIFT COMPOUNDED Hr DHIFT ADDITINS NOTED ON PREVIOUS TESTS.
NO COMPONENTS WERE DEFECTIVE.
COMPONEN T CODE INSIRU-INSTRUMENIA18UN AND CONTROLS p
SYSTEM CODE IA-HEACTOR TRIP SYSTEMS l}
KEYWORDS FAILUME3 REACTOR. DuMILACROSSE IB WR ): INSTRUMENT, SWI TCHilNSTRUMENT. POWER R ANGE 81NS TRUMENT CALIRRATION8 TEST. SYSTEM GPERASILITYiFAILURE. IMMEHENitSET POINT 8 DRIFT 8REACIOR PROTECTION SYSTEM 3 REFUELING 5FAILUkE.
INSTRUMENT 27/6/0000005-0000206//
30 ACCESSION NO.
00Z0143549
- g 781LE SET POINT DR IF T IN APRM AT HINE MILE POINT I p
CORPAUTH NIAGARA MOHA wel PUWER COR P.. SYRACUSE. NY
,}
DATE 1977 TYPE O
MEMO 2 PGS. L1H w/LER 77-42 TO U.S.
NRC, REGION I.
AUG. 29 397?. DOCKET 50-220. T YPE-B wR. MFG--GE.
Q AE--N I AG AR A MOHAWK
-}
AVAIL AVAILABILITY - NRC PUBLIC DOCUMENT ROOM. 3717 H STREET. WASHINGTON. D.
C.
205S5 (08 CENTS /PAGE -
O O
O 4
27se/0000003-0000206//
30 CONTINUATION I
PAGE is Q
MEN! MUM CHARGE S2.003 g
CATEGORY I700001090000 EDITION 0086 CORP CODE NMP Q
COUNTRY A
Q ABSIRACT OATE OF EVENT - 073877.
PO WE R LE V E L - 9 74.
C AUSE - INSTHUMENT DRIFT.
A ROUTINE SURwEILLANCE TEST OF t
THE APkM ' S F OUND IT NECESSANY TO HYPASS SIX LPRM INPUTS. INSTEAD OF THE FIVE STIPULATED IN TECH Sp F (.S t
TO RECEIVE AN IN-OP LIGHT ON A PR M 36.
THE GENEHAL ELECTRIC APNM. NUMBER 286E583G2. S.N.
S.488.25r 90 J Q DRIFTED.
THE PHOPEN SET PUINT wAS HE-LST ABLISHED HY ADJUSTING POTENTIDMETEN R -R O2.
y d
COMPONENT CODE I NS T HU-I NS T RU*eE N I A T I O*4 AND CONTROLS fTlPfTW W m fVVTVY4F LJUYY.LPfTg5A
l AVAll NV A lbdt"T'Y'INRk PUOLI:" DOCUMENT 5000Me 1787 H STREETe CASHINGTON. De C.
21555
( 03 CE N T S/PtA.E -
V g
g o
o 27/6/0000063-0000206//
30 CONTINUATION 8 PAGE I4 p
MIN! MUM CHANGE
$2.003 g
I CATEGPRY I70000g090000 EDITION 0086 CORP CODL NMP Q'
COUNTRY A
g ABSTRACT DATE OF EVENT - 0F3877.
PO WE R LEVEL - 974.
C AUSE - INSTHUMENT DRIFT.
A ROUTINE SURVEILLANCE TEST OF THE APRM'S FOUND IT NECESSARY TO ISYPASS SIX t.P R M INPUIS. INSTEAD OF THE FIVE STIPULATED IN TECH SPECS 10 RECEIVE AN IN-CP LIGHT ON APRM 16.
THE GENERAL ELECTRIC APRM. NUMOER 216M5 8 3G2 e S.N.
5.481.257 HAD O
DRIFTED.
THE PROPER SET POINT W AS RE-EST ABLISHE D IlY ADJUST ING POTENTIOMETER R-102.
G COMPONENT CODE INSINU-INSTRUMENTATION AND CONTROLS SYSTEM CODE R A-RE AC TOR INIP SYSTEMS k
KE YwOR DS F A ILURE 8HE AC IOR. owr 88HSIRUMENT. SW I TCH 3 INSTRUMENT C ALIBRA T ION 31NS TRUME NT, POWER R ANGE 81E ST, SYSTEM v
Q OPEHAOILITY3FAILUNE. INSTRUMENT 8 F A ILUHE. INHERENT 8 SET POIN T 8 DR IF T 8 RE ACT OR PHOTECTION SYSTEM 8NINE MILE gl POINT I towR) 27/6/0000005-0000206//
3I Q
ACCESSION NO.
00Z0143438 g
TITLE APRM THERMAL IRIP SET POINTS EMCEED LIMIT AT ORUNSulCK I COhPAUTH CAHOLINA PO u t.H & LIGHT CO.,
RALEIGH, NC DATE 1977 Q
TVPE-O g.
ME MO 3 PGS. LTR w/LEN 3-F7-70 TO U.S.
NRC. REGION II, OCT. 23e 397F, DOCKET 50-325. TYPE--owr, MFG--GE.
I AE --UE E C AVAIL AVAILABILITY - NRC PUBLIC DOCUMENT ROOM. 8787 H STREEle WASHINGTON, D.
C.
20555 408 CENTS /PAGE -
6 Q
MINIMUM CHARLE S2.003 Q
CATEGORY I700003090000 EDITIUN 0086 CORP CODE AHV Q
COUNTHY A
q3 ABSTRACT DATE OF EVENT - 092677.
POWER LEVEL - 8 72.
CAUSE - PROCEDUHAL DEFICIENCY.
DURING A FLOW OIAS I
PERIODIC TEST. AVENAGE POWER HANGE MONITOR CHANNEL "F"
UPSCALE THERMAL TRIPS FOR OE AND SOE FLOW CURVE q'
WAS FOUND DEYOND THESH TECH SPEC LIM 115.
THE AS FOUNO SEI POINT FOR THE OX FLOW WAS 604 POWER. WHILE Q
THE LIMIT IS 54 4/- JE.
THL AS FOUNO SET POINT FOR THE 502 FLOW WAS 9J4 POWER WHILE THE LIMIT IS 8F
+/- PUwtR.
PEHIODIC RECALIBRAf f 0N OF THE APRM WAS PERFUHMED ON AUG. 22, 89FFe USING M AIN TEN ANCE INSTRUCTION MI J-158.
THI S M A IN T EN ANCE INSTRUCTION DID NOT HAVE THE TECtN ICI AN CHECK THE THE RM AL SE T
+
POINTS.
Q COMPONENT CODE INSTRU-INS THUMEN T AT I ON APO CONTROLS i
]i SYSTEM CODE IA-REACTOH THIP SYSTEMS KEYWORDS FAILUHE3HEACTOR. InwH 3ORUNSWICK I (owr)33NSTRUMENie Sw l T CH i l NS TRUMENT CALIB54ATIONtINSTRUMENT. POWER RANGEITEST. SYSTEM OPERAB* I T Y 3 F AILUNE. INSTRUMEN T 8 F A ILURE e ADM INI STR AT I VE CONTROL 3 PROCEDURES AND 6
Q MANUALSiSET POINT 3 REACTOR.ROTECTION SYSTEM
]
27/6/0000005-0000206//
32 i
b ACCESSION NO.
0020142760 Q
TITLE EMERGENEY ROO IN SwlTCH FAILS RESULTING IN A HEACTOR SCRAM AT OYSTER CREEK ql CORPAUTH JEN SEY CENTHAL POWEN & LIGHT CO.e MOHRISTOWN, NJ DATE 1978 TYPE O
I Q
MEMO 4 PGS. LIR w/LER S0-289/78-33/87-0 TO NRC OFFICE OF I &E. REGION
- 8. DEC. 28. 1978. DOCKE T 50-2 3 9.
Q T YPE-owr. MF G-GL, AE --80R NS & ROE AVAIL AVAILABILITY - NHC PUHLIC DOCUMENT ROOM. 1717 H SINEET. WASHINGTON.
D.
C.
20555 (OS CENTS /PAGE -
MINIMUM CHANGE S2 003 Q
CATEGORY 3700003090000 g
EDITION 0085 CORP CODE JCP l
COUNIRY A
Q ASSTRACT DATE OF EVENT - 121478.
POWER LEVEL - 04.
CAUSE - ISENT SWITCH STOP.
DUR ING ROUT INE STARTUP. A g
REACTOR S CHA M OCCURHED IN RANGE ONE OF THE IBM SYS EM.
AT T Hti TIME OF THE SCR AM, ROOS WERE DEING O
O O
O 27/6/0000001-0000206//
32 CONTINUATION l PAGE IS Q
ul THDHAwN FUH APPROACH TO CRITICAL.
DECAUSE OF HIGH MENON CONCENTRATIONS. THE OPERATOR W A S M AK ING THE Q'
APPROACH USING INFOHMATION FNOM THE SHM.
SINCE THE SRM COUNI HAIE HAD CHANGEO VERY LITTLE. HUOS WERE DEING WITHDRAWN IN Itti NOICH UVERRIDE MODE.
AN ATTEMPT TO INSENT IHE HOO US!NG THE EMERGENCY NOD IN 1
SWITCH FAILEO AN O THE REACIOR SCHAM FDLLOWED.
THE FAILURE IS AT T R IBUTED TO A BENT SWITCH STOP.
THE Q
STOP wOULD NOT ALLOW CONTACT 30 DE MAINTAINEO IN THE FULLY STROKEO PostilON OF THE SWITCH.
THE Q
ME CHAN IC AL STOP PLATE ON THE SW I T CH W A S REPLAC EO.
COMPONENT CODE I NS T HU-I NS I RUMEN T A T I ON APC CONTROLS MYSTEM CODE BA-NEACTON TRIP SYSTEMS Q
KEYWONDS FAILURLINEACION, LlwR IOfS TER CREEK ( SWR ) $ 1NSTRUMENT. SWITCH 8HEALTOR PHOTECTION SYSTEMICONIROL HUD DRIVES 8 Q
CDNTHOL SYSTEMitMERGLNCY SYSTEM 3HEACTOH STAHiUP850 RAM. HEAL 8FAILUNE. INS TRUMEN f 3 F A ILURE. INHEHENT
<o
aomia.s.
o-.c o.
t. u..
ro m..
mm.mm -... --.
..AT__.TKI_. TIME C7... _. _SC3ANe RODS CERE BEING
- l t,
REACTOR S CRt.M OCCURRED I N ICANCE ONE OF ftd IM3 2VS IEM.
THE l
(
)
27/6/0000005-0000206//
32 CONTINUATION l PAGE IS WITHDRAWN FOR APPRO A CH TO CRITICAL.
DEC AU SE OF HIGH XENDN CONCE N T R A T IONS. T HE O PE R A TOR W AS M AK I NG INE
/}
(N -
APPROACH USING I NF DR MA T I ON FROM THE SR M.
SINCE THE SRM COUNT RATE HAD CHANGED VERY LITTLE. RODS WERE DEING wliHDRAwN IN itt NOT CH UVE RR B DE MODE.
AN ATTEMPT TO INSERT THE RDD USING THE EMERGENCY ROD IN SWITCH FAILED AN D THE REACTOR SCRAM FDLLOWED.
THE F A ILURE IS A T T R IBUTE D TO A BENT SwlTCH STOP.
THE
(}
SIDP wOULD NOT ALLOW CDNTACT TO DE MAINTAINED IN THE FULLY STROKED POSITION OF THE SwliCH.
THE
/)
ME CHAN I C AL STOP PLAI E ON THE SW I T CH w A S REPL AC ED.
COMPONENT CODE INSTRU-INSTRUMENTATION AND CONTROLS SYSTEM CODE IA-REACTOR TRIP SYSTEMS
(}.
KEYWORDS F A ILURE 3RE ACIOR. tlwR IOYS TER CREEK ( HwR i % INST RUMENT. SulTCH8 REACTOR PROTECTION SYSTEM 8CDNTROL ROD DRIVES 8 f)
CONTROL SYSIEM IE MERGENCY SYS T E4 8RE ACTOR STARIUP& SCRAM. REAL3 FAILURE. IN STRUMEN T 8 FA ILURE. IMMERLNT 27/6/0000001-0000206//
33
(}
ACCESSION NO.
0020142437
()
TITLE 18ME LIMIT F OR T E S T I NG R PS SYSTEM EXCEEDED AT HATCH 2 CDRPAUTH GEORGIA POWER CO..
DAxLEY. GA DATE E9F8
(}
TYPE O
}
MEMO 2 PGS. LIR W/RO S0-366/8978-70 TO NRC DIRECTOR OF I G E. REGION II. Nov. 2 2.
1978. DOCKET 50-366.
T Y PE -Uw R. M F G-bE. AE-SS I & BECHTEL AVAIL AVAILAUBLliY - NRC PUOLIC DOCUMENT RDOM. 1787 H STREET. WASHINGTON. D.
C.
20555 (08 CENTS /PAGE --
()
}
CATEGORY 1700003090000 EDITION 0084 CORP CODE GPC
(}
COUNTRY A
,} 'i ABSTRACT DATE OF EVENT - 318578.
POWER LEVEL - 554.
CAUSE - INSTRUMENT COULD NOT BE CALIDRATED.
wHILE CALIBRATING 2028-NOI70. THE TWO HOUR TIME LIMIT OF PROCEDURE 16HP-2-52 02 WAS EXCEEDED.
THE Iwo HOUR TIME LIMIT WAS EXCEEDED DECAUSE THE 2B23-NOl7C I NS T R UME N T COULD NOT DE C4.IDR AT ED.
(}
wtTH A NEW BNSTRUMENI AND PROCEDURE HNP-2-5202 PERFOR MED SAIISFACTORILY.
/)
COM PONEN T CODE INSTRU-INSTRUMENTATIDN AND CON T H DL S SYSTEM CODE I A-RE ACIOR TRIP SYSTEMS KEYWORDS F A ILURE 3RE ACTOR. DwR 8HAICH 2 (DwR)iTEST INTERVAL 3 TESTING 3 REACTOR PROIECTION SYSTEMIENSTRUMENT. SwlICH;
()
FAILURE. I NS IR UMENT 3 F AILURE. I NHER EN T 3 I NS T RUMEN T CALIDRATIDNIREACTOR ST ARTUP EXPE R IENCE
')
27/6/0000003-0000206//
34 ACCESSION NO.
0020842436
(}
TITLE SURVEILLANCE INTERVAL EXCEEDED FOR RPS INSTRUMENT AT HATCH 2 f)
CORPAUTH GEDRGI A POWER CO..
DAMLEY. GA DATE 1978 iTPE O
{i MEMO 3 PGS. LTR w/Ru 50-3 60/1978-78 TO NRC DIRECTOR OF I & E.
REGION II. DEC.
I.
197P. DOCKEY 50-366
")
{
TYPE--owr. M FG -GE. AE-SS I & DECHTEL AVAIL AVAILABILITY - NRC PUULIC DOCUMENT RDOM. 1717 H STREET. WASHINGTON. D. C.
20555 108 CENTS /PAGE --
MINIMUM CHARGE S2.00)
{t C A T EGDRY 1F00001090000
() j EDIIION 0084 CORP CODE GPC COUNTRY A
(,
ABSIRACT DATE OF EVENT - 188778.
POWER LEVEL - 58%.
CAUSL - MAINTENANCE ON OTHER INSTRUMENTS.
PROCEDURC
()
NHp-2-3OO3 w AS NOI COMPLETED WITHIN THE SPECIF IED INTERVAL PER TECH SPEC FOR INS TRUME NI PS23-NOlFD.
LAST ALLOWABLE DATE WAS II/IJ/F8.
PROCEDURE W AS PER FOR MED 18/86/78.
THE SURVEILLANCE INTERVAL WAS EXCEEDED BECAUSE PERSONNEL HAD TO REPAIR Two OIHEN I N ST RUMEN T S ON THIS PROCEDURE AND THE PRULEDURE HAD
()
TO BE STOPPED BECAUSE OF OTHER WDRK BEING DONE IN THE HPS CHANNEL.
THE WO RK W AS NOT CDMPLE TE D DEF ORE
[]
THE TIME INTERVAL wAS EXCEEDED ON 2021-NORFD.
COMPO NEN T CODE INSTRU-INSTRUMENIATION AND CONTROLS SYSTEM CODE IA-REACIDR TRIP SYSTEMS
()
KEYWORDS FAILUREIREACTOR. DwR ; HAT CH 2 (swr)iREACIDR STARTUP E X PER IE NCE i f ES T INT E RVALI TEsi LNG 8 INS TRUMEN TS. MISC.3
-}
REACIOR PROTECTION SYSTEMilNSTRUMENI. SWITCH 31NSfHUMENT C AL IBR A T ION 3 M A I N TE N ANCE AND REPAIR 3 FAILURE.
k) b)
()
4D 27/6/0000005-0000206//
34 CONTINUAYlDN l P A GE 16
()
INHERENT gg 27/6/0000003-0000206//
35 ACCESSION NO.
0020142J02
(}
TITLE SET POINT DR IF T IN ROD OLOCK MONITOR AT ORUNSWICK Gg CORPAUTH CAROLINA POWER & LIGHT C O., RALEIGH. NC DATE
$978 TYPE O
- ()
MEMO 2 PGS. LTR w/LER 2-F8-072 TO U.S. NRL. REGIDN II. NOV. 30.
3978. DOEKET S0-324 TYPE--nwR. MF G--GE.
{j AE--UECL AV All AVAILABILI GLIC DOCUMENT 4004 1787 H ST RE E I. WASHINGTON.
D.
C.
20S55 408 CENIS/PAGE -
h
as..wa w.,
.a..~.m..w....
........w.
....... ~....... _ _........ -.... _... _...
g, HEACTDH PHOTECTION SYSTEM 38N5fkUMENie SW I T CH 8 I NS TRUME N T CALIEAAT ION 8CAINTENANCE END REPAIRIF AILukE.
t.
(
)
1
(?
(>
27/6/0000005-0000206//
34 CONTINUATIDN 1 PAGE 36
()
INHEHE N T
/)
27/6/0000005-0000206//
35 i
ACCESSION NO.
OOZOI42JO2 j
l
{p TITLE SET POINT DH j F T IN HDD BLOCK MON ! T DR AT BRUNSwlCK
.)
COHpAUTH CAROLINA POwlH & LIGHT C O. e RALEIGHe NC 8
DATE 8978 TYPE O
()
MEMO 2 PGS. LTR w/LEH 2-78-072 TO U.S. NRC. REGIDN II, NOV. 30. 1978. DOCKET S0-324, TYPE--DwRe MF G--GE.
()
A E --UE C C w
AVAIL AVAILABILITY - NRC PUBLIC DOCUMENT ROUM. 3787 H ST RE E T. WASHINGTDN, D.
C.
20555 (OS CENTS /PAGE --
()
CATEGDRY 3700005090000
{}
EDITION 0084 CORP CODE AHV COUM1RY A
()
AUSTRACT DATE OF EVENT - 180878.
POWER LEVEL - 995.
CAUSE - I NS TR UMENT DRIFT.
DURING THE RDD OLDCK MUNITOR
,} f PEHIDDIC TEST, ROM CHANNEL A W AS FOUND DUT DF C All 0R A T I ON.
ROM wAS OUT OF CALIBR AT ION DUE TD SE T POINT DRIFT.
THE MUNITUR wAS RECAL10H ATED AND REIURNED TO SE R V I CE. FR E QUE NCY O F CALI BR AT ION FOR THE MONITDN wlLL DE INCREASED FHOM ONCE PER VEAR. TO TWICE PER YEAR.
()
COMPONENT CODE INSIRU-INSTRUMENTATION A ND CONTROLS
.}
SYSTEM CODE RS-HEACilVITY CONTROL SY ST EMS KLYuGHOS F AILURE 8HE ACIDR. H wH 8 BRUN$w 3 CK 2 ( owr ) $ INST RUMEN T, PRO TECT IVE 8 CDNTH OL ROD DRIVEStCONTROL SYSTEM 8 I NS T R U ME N T CALISHAIBUNITEST. SYSTEM DPERASILIIV8FAILUNE. INSTRUMEN T 3F A I LUR E e INHERENT 3 BET POINT 8 DRIFT 3
()
INSTRUMENT, SWITCH s}
27/6/0000005-0000206//
36 ACCESSION NO.
0020848993 (4
i t i LE TWO IRM CHANNELS INOPERABLE IN THE SAME TRIP SYSTEM AT DROWNS FERR Y 3 T}
CORPAUTH T E NNESSEE VALLCY AUTHURITY. CH AT T ANDOG A.
TN i
f DATE 19 f 8 I
TYPE O
()
ME MO 3 PGS. LTR w/0 FRO-50-296/7829 10 NRC DF F ICE OF I & Ee REGION II. NOV. 21. 3978. DOCKET 50-296,
}
T Y PE --O wH. MFG-GE, AL-T V A AVAIL AVAILABILITY - NRC PUBLIC DOCUMENT ROOM. 3787 H STREEI. WASHINGID" D.
C.
2055b 608 CENTS /PAGE --
l MINIMUM CHANGE S2.OOD
()
CATEGORY 3700003090000
,}
EDITION 0003 CORP CODE TVA CDONTRY A
{t AHSTR ACT DATE OF EVENT - 102978.
POWER LEVEL - 02.
CAUSE - CABLES DAMAGED OY M AINTENANCE ACTIVITY.
DURING
.)
REFUELING wHILE HELOADING FUEL IN T HE VE SSEL W IT H ALL RUDS INSE R T E D, Two IRM CHANNELS wERE INOPERABLE IN THE SAME TRIP SYSTEM EXCEEDING T HE LIMITS.
IRM F SIGNAL CABLE wAS SHEARED BY THE CPD REPAIR PL A T F ORM. IRM H SIGNAL CABLE CONNECIDH BECAME DISCDNNECTED DURING MAINTENANCE.
REFUELING OPERATEDNS
{
wERE HALTED UNTIL THE CAHLES WLRE HEPA3HED AND H ECDN NECI LD.
,}
COMPONEN T CODE INSTRU-INSTRUMENTATION AND CONTROLS SYSTEM CODE IA-REACTUR IRIP SYSTEMS KEYWORDS FAILURE 8HEACTOR, UwHiUNOWNS FEkHY 3 (BwR)itNSTRU4ENie INTERMEDI ATE R ANGE 8RE ACTOR PRO T ECi l DN SYSTEMg l
(i INSTRUMENT, Sw li CH 3 C AULE S A ND CONNECTOR S 8D AM AGE 8 MA IN TENANCE AND REPARRIFAILURE, INSikUMENT 3F A ILURE.
.)
MAINTENANCE ERNUN 3MA INTEN ANCE PERSONNEL 8 REFUELING 27/6/0000005-0000206//
37 (p
ACCESSION NO.
0020841688
()
TITLE APHM HI GH F LUX SCRAM SET POINT SET HIGH AT HATCH 2 C DR PAU T H GEORGIA POutR CO.e ll AXLE Y.
GA DATE 3978 j
()
TYPE O
()
ME MO 2 PGS. LTR w/HO 50-3 b6/1978-51 TO NRC DIRECTOR OF I & E. REGION 81. OCT. 2 #. 3978 DDCKET 50-366
()
()
()
()l 27/6/0000005-0000206//
37 CONTINUATION I P A GE 87
()
TYPE--owr. MFG--GE.
AL--SSI G DECHTEL
()
AVAIL AVAILAufLITY - NH C P UOL I C DOCUME N T HDOM. 1787 H STREEl. W AS:4 3 NGTON. D.
C.
20555 (08 CENTS /PAGE --
MINIMUM CHAR GE 52 00)
CATEGORY 1700003090000
(}
EDEilDN 0084
()
CORP CCDE GPC COUNTRY A
ASSIR ACT DAIC OF EVENT - 301878.
POWER LEVEL - 194.
CAUSE - DEFICIENT PROCEDUNES.
WHILE CALI BR A T ING THE APRM i
()
HIGH FLUX SCRAM IHIP SET POINIS. IT WAS DISCUVEHED THAT THE THIP SET POINTS WE RE SET AT 8172 OF P AIED
()
l THLHMAL POwLR.
HLGULATOHY GUIDE I.68 HEDutRES T HE SE T POIN T 10 DE NO GREA TEH THAN 354 FOR THE TEST A 0 0CKp3 Ucr $ ) AMQ($C1Go THE PR' Q M wAS CAUSED HV A DEFICIENCY IN PNOCEDURES "*UCH REQUIRED
a e saa.
w y
ME MO 2 PGS. LTH U/MO 53-366/IE78-SS T O N RC D IRE C10R OF 3 & Ee HEGION II OCT. 27. 1973. DOCKET 59-J66,
()
- )
(?
C) 27/6/0000005-0000206//
37 CONTINUATlON I PAGE I?
(]
TYPE--BwR. M F G --GE. AL--SSI & HECHTEL r}
AVAIL A V A I LA B I L I T Y - NH C PUBLI C DOCUMEN T HOOM. IFl? H SIREET. WASHINGTON. D.
C.
20555 (OS CENTS /PAGE --
+
MINIMUM CH AR GE S2.00) j CATEGORY 8700005090000 r
(}
EDIIION 0084 e'} ;
CORP CEDE GPC CDUNT R Y A
AOSTR ACT DATE OF EVENT - 301178.
POWER LE VE L - 194.
CAUSE - DEFICIENT PROCEDURES.
wHILE CALI BR A T ING THE APRM k
(}
HIGH Flux SCRAM THIP SET POINTS. IT W AS Ol SCOVERED THAT THE TRIP SE T PO INT S WE RE SET AT 1875 OF RATED
{} '
THLHMAL POWER.
N L GU LA T OHY GUIDE 3.68 REQUIRES THE SET POINT TO DE ND GREA TER THAN 35E FOR THE TEST CONDITIDN THEN A PPL I CAU LE.
THE PR DB LE M WAS CAUSED BY A DEFICIENCY IN PHOCEDURES WHICH REQUIRED CALIDHAVION OF THE APHM HIGH FLUX THIP SET POINis, DUT DID NOT INCLUDE 1HE REDUCED SE T POINTS REQUIRED BY HEGULATOMY GUIDE 1.68 DUNING INI TI AL ST ARIUP IESTING.
THE AFFECTED PROCEDURE w AS REVI SED.
()
(}
COMPONENT CODE INSTRU-INSikUMENTATION APO CON T ROL S SYSTEM CODE I A-RE AC T OR TRIP SYSTEMS K E YWORDS FAILURE 3 REACTOR. UwH3HATOI 2 IUwR)3 REACTOR STARTUP EXPERIENCE $ INSTRUMENT. SWITCH 4 INSTRUMENT, POWER
()
H A N GE 8 IES T. SY ST EM OPER AD I L I T Y 8 F A I LUME. I NS T RU MENi i F A ILURE. ADMINI ST R AT IVE CONTROL
- PROCEDURES AND
.)
M ANUALS 3 SE T B*OINI3HEACTOR PHOTECTION SYSTEM 27/6/0000005-0000206//
38
(}
ACCESSION NO.
0020148522
,}
TITLE REACIOR MODE SulTCH NOT PLACED IN SHUIDOWN POSITION WHEN REQUIRED AT BIG ROCK POINT CON PAU TH CONSUMERS POWE R CO.e JACKSUN, MI DATE 59F8
()
1YPE O
()
MEMO 2 PGS. LTR w/LER F8-039/03L-O 10 NRC OFF ICE OF I & E, REGION III. DC1. 9 3978. DOCKEI 50-155.
TYPE-BwR. MF G- -GE. AE --BE CHTEL AVAll AVAILAHILITY - NHC PUBLIC DOCUMENT ROOM. 1787 H STREET. WASHINGTON. D.
C.
20555 808 CENTS /PAGE --
()
,}
CATEGONY 3700003090000 EDITluN 0083 CDH P CODE CPC
(}
COUN TR Y A
gg AUSTRACT DAIC DF EVENT - 091178.
POWER LEVEL - OS.
CAUSE - FAILUHE TO FDLLOW PROCEDURES.
DURING SHUTDOWN C OND I T I DNS, A CONTROL HOD DR IVE W AS REMOVED FOR M A INT E NANCE WDRK AND THE REACTOR MODE Swl1CH wAS NOT PLACED IN THE SHUIDOWN POSITION AS REQUlHED.
MAINTENANCE PENSONNEL FA ILED TO FOLLDw THE PROCEDUNE
{,
WHICet REuulHED NOT IF IC AT ION TO THE CONikDL ROOM AF T E R THE BLADE WAS Wlit0RAwN AND PH IOR TO REMOVAL OF g
THE DRIVE.
THE INC80ENT HAS BEEN HEVIEwED wifH 1HE HEPAIRMAN ENVOLVED.
COMPONENT CODE CKTORK-CIRCUIT CLOSE RS/ INT E RRUPIE RS SYSTEM CODE RO-kEACTIVITY CONIROL SYST EMS
{
KEYWDRDS FAILURE 8HEACf0R. DwR8 BIG ROCK POINT IUwR)3 CONTROL SYST E M 8 I NS TRUMEN T, SW ITCHiRE ACTOR CONTRDLtCONTROE. ROD i}
DR I VES 3M AIN T EN ANCE A ND REPA IR tF AILURE, MAINTENANCE ERRORIM A INT EN ANCE PERSONNELiPROCE DURES AND ML30ALS 2 F/6/000000 3 -0000206//
39
(
ACCESSION NO.
0020148444 g
T I T LE SE T POINT DRIFT IN AVERAGE POWER R ANGE MONITOR AT HATCH 2 CCHPAU TH GEOHGI A POWER CO.. B AXLE Y, GA DATE 1978
{p TYPE O
{g MEMU 2 PGS, LTR w/RO 50-366/3978-53 TO NRC OFFICE OF I & E. REGION II. OCT. 27. 1978. DDCKEY S0-366.
TYPE--owr. MFG--GE. AE --SS I & BECHiEL AVAIL AVAILABILITY - NNC PUOLIC DOCUMENT ROOM, IFIF H STREET. WASHINGTON, D.
C.
20555 (08 CENTS /PAGE --
()
MINIMUM CHARGE
$2 00)
()
CATEGCRY 1700004090000 EDITION 0083 CORP CODE GPC
()
CDUNTRY A
)
A051R ACT DATE OF EVENT - 301678.
POWE R LEVEL - 48%.
CAUSE - INSI RUMEN T ORIFT.
wHILE PEHFORMING A TE ST. HPS i
()
bh
()
ED 27/6/0000001-0000205//
39 CONTINUATION 3 PAGE 58
(}
CHANNEL
'A' W AS FDUND T O DE INOPERATIVE.
AVER AGE POWER HANGE MON E T OR
'E' HAD DRIFTED UPSCALE TO A SET gg POINT OF 309 AND AVERAGE POWER R ANGE MONIT ON
'A' W AS READJUSIEO.
BOTH APHMS wERE FUNCT IONALLY TESTED.
COMPONENT CODE INSTRU-INSTRUMENTATION APU CONikOLS
()
SYSTEM CODE IA-REACTOR TRIP SYSTEMS
()
K E Y WORDS FAILUHEiHEACTOR. OwHiHATCH 2 IHwR)3REACIDR S T ARI UP EXPERIE NCE 3 INSTRUMEN T C ALIBR A T ION 8 TEST. SYSTEM OPLHAHILITV3FAILUHE. I NS T RUMENi iN E A C10R PROIECTION SYSTEM 8 SET POINitDRIFT3 FAILURE, INHERENT 8INSTRUMENie SwlTCH J q)
~ y 6 g pOOOS-OOOO g 6 L.
40 2
T saw. n.
~
y,
,j AaSTAACT DATE OF EVENT - 308673.
POmER LEVEL - 4EE.
CLUSE - INST RUMENT ORIFT.
WHILE PERFORMING A TLSie kPS
(
- )
(>
27/6/0000001-0000206//
39 CDN T INUAT I DH I PAGE IS
()
CHANNEL
- A*
WAS FOUND 10 BE INOPERATIVE.
AVERAGE POWER RANGE MDNI IDR
- E' HAD DRIFTED UPSCALE TO A SET r}
l POENT OF 109 AND AVEHAGE POWER R ANGE MONITDH
- A*
DID NO T H A VE ENOUGH LPRM INPUTS.
BOTH APRMS WERE FUNCT I ONALLY TESTED.
COMPONENT CODE INSTRU-INSTRUMENTAT10N APO CONTROLS
()
SYSTEM CODE IA-REACTOR TRIP SYSTEMS
{}
KEYwDRDS FAILUNE8REACIOR. owr $ HAT CH 2 towR)iREACTOR ST ART UP EXPERIENCEiINSTRUMENT C ALIBRAT ION E TEST. SYSTEM OPERAOfLITYiFAILUHE. I NS T RU ME Ni iR E A CT OR PROIECTION SYSTEM 8 SET POINf8 DRIFT 8 FAILURE. INHERENTilNSTRbMENT.
SWITCH 27/6/0000001-0000206//
40 ACCESSION NO.
0020140514 TITLE APHM SET POINT OUT OF LIMITS AT DRESDEN 2
()
CORPAUTH COMMONwE ALT H EDI SON CO., MORRIS. 3L
()
DATE 59F8 TYPE Q
MEMO 2 PGS. LTR w/RO F8-044/03L-O TO NRC DIRECTORATE OF REGULATORY OPERATIDNSe REGION IIIe AUG. 25, 1978.
()
DOCKEI 50-2JFe TYPE--UwH. MF G--GE. AE -- S GT & LUNDY J)
AVAIL AVAILABILITY - NHC POOLIC DOCUMENT RDOM. ITIF H STREET. WASHINGTON. D.
C.
20555 808 CENTS /PAGE --
MINIMUM CHA R GE S2.OO)
CATEGDRY 3F00003090000
()
EDITION 0082
")
CONP CODE ORS COUNTRY A
ABSTRACT DATE OF EVENT - 080878.
POWER LEVEL - Ot.
CAUSE - OROMEN WIRE /TR ANSISTUR FAILURE.
. MING A TEST.
APHM CHANNEL 3 SCHAM SET PolNT WAS FOUND DB2OE POWER AT CORE FLOWS DIOO2.
F DR COR E F LOe < 100 %,
THE
,}
(}
FLOW DIASED SCHAM SE1 POINI WAS CDNSERVA f lVELY BELOW TECH SPEC LIMITS.
THE CAUSE WAS A BRDKEN W INE AND A TRANSISTOR F AILUME ON THE FLOW CONTHOL TRIP REF ERE NCE MODULE DOARD.
THE DROKEN WIRE WAS REPAIRED AND THE MODULE HOARD WAS REPLACED.
(}
COMPONENT CODE INSTHU-INSTRUMENT AT E DN AND CONTADLS
.}
SYSTEM CODE IA-NEACIOR TRIP SYSTEMS K E Y W DHDS FAILUHEIREACTON. H wR IDRE SOEN 2 ( BW R ) il NSTRUMEN T. SWITCHilNSTRUMENT. POWER RANGE 8INSIRUMENT CALIBRATION 8 TEST. SYSTEM C PEH AB I LI TY 4 F A I LURE, I NS T R UME N T IF A ILUR E. INHERENT 35ET POINitCABLES AND CONNECTORS 8 REACTOR
(}
PRO T E C T I ON SYS TEM 3 ELECTRONIC FUNCT ION UNIIS& SQLID STATE DEVICE
{}
2 F/6/000000 5 -00002 06//
45 ACCESSION NO.
00Z0140337
{)
TITLE DRIFT IN A PR M LPRM COUNT THIP AT FIT 2PATRIEK
}
CONPAUTH POWER AUTHORRIV UF T HE STAIL OF NEW YORKE LYCOMING. NY DATE 1978 TYPE O
()
ME HO 2 PGS, LTR w/LER 78-50 TO U.S. NRC. REGION I, AUG. 24 1978. DOCKET 50-333. T YPE--Own, MF G--GE.
)
AE --S I ONE & WEUSTER AVAIL AVAILAORLITY - NRC PUULIC DOCUMENT RDOM, 1787 H STREEle WASHINGTON. D.
C.
20555 (08 CENTS /PAGE --
{6 C A T EGORY 1700003090000
)
EDITION 0088 CORP CUDE BGU COUNTRY A
{,
AUSTRACT DATE OF EVENT - 0F0778.
PowtR LEVE L - 931.
CAUSE - INSTRUMENT DRIFT.
APRM D LPRN COUNT TRIP WAS
.)
FOUND 10 DE LESS CON SER V A T I VE THAN TECH SPEC NEQUIREMENTS.
THE TRIP CIRCUIT HAD DRIFTED.
THE COUNT TRIP CINCulTS WEHL ADJUSTED TO TRIP ulTHIN TECH SPdC LIMITS.
COM PO NE N T CODE INSTRU-INSTRUMENTATION A ND CONTROLS
{}
SYSTEM CODE IA-NEACION TRIP SYSTEMS
{}
K EY WDR DS FAILUHE3HEACTOR, OwH&FITZPATRICK IBwR)ilNSTRUMENT, SW I T chi lNS T R UMENT, P OWER M A NGE 8 RE AC TOR PROTECTION SY S I EM 8 I NS T RUMEN T C ALIBR AT IONITEST. SYSTEM OPCR ASILI T Y 8F AI LURE. INSTRUMENT 8F AILURE, INHERENT 8 SET POINT 8 DRIFT I)
(I
()
()
()
()
27/6/0000001-0000206//
42 PAGE 19
()
ACCESSION NO.
0020140320
()
TITLE APHM SCHAM TRIP SE T T ING FOUND LUw AT MONitCELLO CORPAUTH NOHTHERN ST A TE S POWER C0..
MINNEAPOLIS, MN DATE
$978
(}
TYPE O
()
MEMD 4 PGS. LTR w/LER 78-OIS/03L-O 10 NRC OFFICE OF I L E. REGIDH Ill. SE P T. le 1978 DOCKET 50-263.
T YPE -O wH. MF G-GE T AE-DE CHT EL AVAIL AVAILABILITY - NHC PUOLIC DOCUME N T RHOM. 171F H SlHEEI. WASHINGION.
D.
C.
20555 (08 CENTS /PAGE --
()
MINIMUM CHA N GE S2.00)
()
CATEGORY 1F00003090000
( ERUf KQ 6 Man
U h
9
' C O
27/6/0000001-0000206//
42 PAGE 19
/'
ACCESSION NO.
0020140320
.f)
TITLE APNM SCHAM TRIP SETTING FOUND LOW AT MONTICELLO CORPAUTH NORTHERN ST A TES POWER C0..
MINNEAPOLIS. MN DATE 1978
{
TYPE O
g MEMO 4 PGS. LIR w/LER 78-OI5/03L-O 10 NRC OFFICE OF I L E.
REGION III. SE P T.
1.
1978 DOCMET 50-263.
TYPE--BWR. MF G-GE T AE -BE CHI EL AVAll AVAILABILITY - NHC PUOLIC DOCUMENT ROOM. 1787 H STREE1. WASHINGTON. D. C.
20555 IOS CENTS /PAGE -
Q ;,
{
MINIMUM CHARGE
$2.00) 3 CATEGORY I700005090000 I
EDITION 00a8 COHP CtXJ E NSP
{
COUNTRY A
Q ABSTRACT DATE OF EVENT - 060578.
POWER LEVEL - 703.
CAUSE - LARGE CHANGE IN POWER SHAPE.
AFTER CONTROL ROD ADJUSTMENTS AT 70* POWER. II WAS DISCOVERED THAT I APRM SCRAM TRIP SETTING WAS 4 TO St LOW.
UNE OTHER APRM IN IHAT CHANNEL w AS BYPASSED. LEAVING ONL OPERABLE APRM IN THE CHANNEL.
TECH SPEC REQUIRES TWO
-} {*
Q OPE R AtsL E APRMS PER CHANHLL.
LARGE POWER SHAPE CHANGES RESULTED IN LPRM UUTPUT CHANGES. WHICH DECALIBRATED ONt APRM.
THE UPENATIONS MANUAL DOES NOT EXPLICITLY REQUIRE APRM GAIN CHECKS AF TE R CONTHOL ROO AD JUST NENT S.
THE GAIN SE T T ING WAS IMMEDIATELY CORRECTED.
PROCEDURES WERE RE v l SE D TO
-) l REQUIRE APRM CHELKS DURING RUD MOVEMENTS.
Q COMPONENT CODE INSTHU-INSTRUMENI AT ION Ato CON TROLS SYSTEM CODE BA-REACIDH THIP SYSTEMS KEYWORDS F AILUNE 8RE ACTOR. HeR 8 MONTI CELLO I DwR 3 3 INSTRUMENT. SW I T Ot t I NST RU MEN T. POWER RANGE 8 SET POINT 8 POWER D E S T R I OU T I ON IF A I LURE. INST RUMENT $PROCE DURES AND MANUALSIFAILURE. ADMIN E STR A T IVE CONTROL 8 REACTOR t
Q PROTECTION SYSTEM 5 INSTRUMENT CALIBRAtlON 4}
27/6/0000001-0000206//
43 i
ACCESSION NO.
0020B40263 Q
IITLE REACTOR LOW LEVEL SW I T CHE S ACTUATE BELOW LIMIT At OYSTER CREEK g,
CORPAUTH JERSEY CENTRAL POWER f. LIGHT CO..
MORR I ST OWN. NJ s
f DATE 3970 TYPE Q
Q MEMO 4 PGS. LIR w/RO 50-289/78-13/3L-0 10 NRC OFFICE OF I LE. REGION
- 1. AUG. Ele 1978. DOCKET 50-239
]'
T YPE -H WH. M F G -GE. AE-OUH NS & ROE AVAIL AVAILAtBILITY - NRC PUULIC DOCUMENT ROOM. 1787 H STREET. WASHINGTON. D.
C.
20555 808 CENTS /PAGE -
g MINIMUM CHARGE S2.OO)
Q CATEGORY 1700003090000 Q(
EDITRON 00HI CORP CODE JCP COUNTRY A
Q ABSTRACT DATE OF EVENT - 078478.
POWER LEVEL - 794.
C AUSE - DEFIC IENCIES IN PR ICH PROCEDURE.
WHILE PERFOHMING gf THE RLACTON LOW LEVEL TEST. THE FOUM REACTOR WATEH S W I T OtE.S USE D TO INITIATE A SCRAM wERE FOUND TO BE LESS CONSLRVAftVL THAN TECH SPEC LIMITS.
THE DISCOVERY OF THE VARIANCE IS DUE TO THE USE OF A NEWLY HE V I SE D PROCEDURE WHICH IMPROVEO THE METHOD OF TESTING THL TRIP POINIS.
SAFETY SIGNIFICANCE OF THE 0
- } }
Q ITEM 15 CONSIDERED MINIMAL SINCE A SCR A M WOULD HAVE OCCURRED At It' 3" WHI CH IS ONLY 2* LESS THAN THE DE S IRE D SE l i LNG.
THC CAUSE OF THIS OCCURRENCE CAN BE AT1RIBUT ED TD DEF ICI ENCIES IN THE PROCEDUNE USED PHIUR TO THIS EVENT.
COMPONENT COOE INSTRU-INSTRUMENTATION AND CON TROLS Q
SYSTEM CODE I A-44E A C T UR 1 RIP SYSTEMS g
KEYWORDS F A I LUMEIRE ACION. UWR I OYS T E N CREEK (BWR)3 SENSORS. LEVELIINSTRUMENT. SWITCHiPRESSURE VESSELS 8 SET POINil FAILUHE. INSTRUMENT $FAILUHE. ADMI NI STR A l lV E CONT Rot ipkrK EDURES AND MANUALSIREACTOR PROTECTION SYSTEM 3 TEST. SYSTEM UPERABILETY 27/6/0000003-0000206//
44 ACCESSION NO.
0020140260 TITLE SET PUINT DR IF T IN REACTOR WATER LEVEL SWITCHES AT OROWNS FERRY I l
Q CORPAUTH TE NNESSEE VALLEY AUTHOR 11Y. CHATTANOOGA. TN
}
DATE E978 0
0 1
O 9
27/6/0000003-0000206//
44 CONTINUATION I
PAGE 20 Q
TYPE O
g MEMU 2 PGS. LTR w / BF RO-50 -259/ F e 24 TO NRC OF F ICE OF I G E. HEGION II. AUG.
7.
1978 DOCMET 50-259.
T Y PE -BW R. MFG -GE.
AE -T V A AVAIL AVAILABILITY - NHC PUBLIC DOCUMENT ROOM. 3717 H SIHEET. WASHINGTON. D.
C.
20555 (OH CENTS /PAGE -
Q CATEGORY l700005090000 EDITION 0081 CORP CODE TVA Q
COUNTRY A
Q ABS TR ACF DATE OF E.vE N T - OF2078.
POWER LEVEL - 72%.
CAUSE - INSTRUMENT DRIFT.
DURING NORMAL OPERATIDN.
REACTOR whL IT.C g S-J-2OJO EXCEEDE E
T ESTA,BL_ISHED D Q S Q EJ EVEL SwliCH.
r j ___.
()
- ) {
()
- )
k 27/6/0000003-0000206//
44 CONTINUATION I
PAGE 20
()
TYPE O
/}
I MEMO 2 PGS. LTR W / DF h0-SO -259 / T 824 TO NRC OFF ICE OF 3 &E. REGION II. AUG. 7.
3978. DDCKET 50-259.
I T Y PE --O w R. MFG--GE.
AE --T V A AVAIL AVAILAOILI1V - NHL PUBLIC DOCUMENT ROOM. 17I7 H STREE1. WASHINGTON. D.
C.
20555 (08 CENTS /PAGE --
/}f.
()
MINIMUM CHANGE S2 00)
CATEGDRY 1700003090000 1
EDITION 0088 CORP CODE TVA l
,} '
()
COUNTRY A
ABS TR ACT DATE OF SVENT - 072078.
POWER LEVEL - 722.
C AUSE - INS TRUMEN T ORIFT.
DURING NORMAL DPERATION.
REACTOR WATER LEVEL SulTCH L I S-J-20 30 EXCEEDED THE SET POINT ESTABLISHED BY T.S.
THE LEVEL SWITCH.
BANTON INSTRUMENT CO. MODEL 288A. HAD DRIF IED BELow T.S. LIMIT.
THE SwlICH WAS IN SPE C T E D.
()
RECALIBRATED. F UNCT I ONALLY TESTED FOR REPEATABILITY. AND RETURNED TO SE RVI CE.
r}
COMPONEN T CODE INSTRU-INSTRUMENTAIEDN AND CONTROLS SYSTEM CDDE IA-REACfDR TRIP SYSTEMS KEYWORDS F A ILURE 3RE ACTOR. owr ;OROwNS FERRY I (D wH I 8 INST RUMEN T. SwtICH8 INSTRUMENT CALIBRATION 8 SENSORS. LEVEL 3 4
()
TEbi. SYST EM OPER ABI LI T Y;F A ILURL. I NS T R UME N i & F A I LUR E. INHERENI S S if POI NilDRIFT 8 PRESSURE VESSELS 3 RE ACT OR
.} '
P90TECTION SYSTEM
}
27/6/0000003-0000206//
45
(}
ACCESSION NO.
00Z0140181
.} 'l TRILE APHM IRIP SE T T ING C ALCULATED INCORRECTLY AT HATCH I CORPAUTH GEOHGIA POWER CO.,
OARLEY. GA DATE 1978
(\\
TYPE Q
()
MEMO 2 PGS. LTR W/RO S0-328/1978-63 IO NRC DIRECIDH OF i a E. REGION II. AUG. 25. 1978. DOCKET S0-321.
F YPE --Uw R. M F G--GE. AE--SSR AVAIL AVAILAOILITY - NRC PUSLIC DOCUMENT ROO M. 1717 H SIREET. WASHINGTON. D.
C.
20S55 (OS CENTS /PAGE --
(}
MINIMUM CHARGE S2 009
,} }
CATECDRY 1700003090000 EDITION 0081
,} l CORP CODE GPC
(}
CDUN T R Y A
AUSTRACT DAIE OF EVENT - 081378.
POWEN LEVEL - 992.
CAUSE - MISCDMMUNICATIDN S E TW EEN DE SI GN AND SITE.
DURING NOHMAL POWER OPERATION. IT WAS DISCOVERED THAT 1HE F ACIORS USED 10 MODIFY APRM IRIP SETTINGS FOR HIGH PEAKING FACIDH HAD NOT DLEN CALCULATED CONSISTENTLY wtTH LIMITS SET FORTH IN TECH SPECS DUR ING CYCLE J.
(}
IN THE EVENT OF A SP UR I OUS POWLR SURGE. 1HE APRM 1R IP FUNC T ION WDULD HAVE OPERATED HUT AT A SLIGHTLY J) 1' NON-CONSE RV A T I VE POWER LEVEL.
THE CAUSE OF THE EVENT CAN DE ATTRIBUTED TO MISCOMMUNICATION HE1 WEEN DESIGN AND THC SITE.
AS A NESULT OF RELDADING SOME OF THE COHE WITH 8 X 8R FUEL wHICH HAS A LONGER ACilVE LENGIH. THE MC IHO DOLOGY FDR CALCULATING PEAKING FACTUN BECAME INCONSISTENT.
}g (3
COMPONENT CODE I NS T HU-I NS T RUMEN I AT I ON AND CONIROLS l
SYSTEM CODE IA-REACIOR TRIP SYSTEMS I
KE YWORDS FAILUHE$ REACTOR. HwR8HAICH I ( HwR I 8 MA T HEMA T I CA L TREA T MENT 8 SET PO INT 8 E NS THUMENT. Sw t T CH i lN S TRU MEN T.
POWER R ANGE 5RE AC T OR PROIECTION SYST EMiF AILURE. INST RUMEN f 3F A ILURE. ADM I NIS TR A T IVE CONT ROLI COM MUNIC A fl 0N 27/6/0000003-0000206//
46 ACCESSION NO.
0020140047 TITLE SET POINI DRIFT IN APHM ROD ULOCK CHANNEL AT ORESOEN 2
()
CORPAUTH COMMONWEALTH EDISON 00..
MQhRIS. EL g}
DATE 19F0 TYPE O
MEMO 2 PGS. LTR W/R0 78-040/OJL-O TO NRC DIRECTORATE OF RE GULAT ORY OPER AT IONS. REGION III. JULY 28, 1978.
()
DOCKET 50-237. TVPE--UwR. MF G--GE. AE--SGT & LUNDY
()
AVAIL AVAILADSLI1Y - NHC PUBL IC DOCUMENT ROOM. 1717 H STREET. WASHINGTON.
D.
C.
20555 808 CENTS /PAGE --
{
CATEGORY 1700003090000
()
EDITEDN 0080
()
CORP CDDE DRS
()
()
()
27/6/0000001-0000206//
46 CONTINUATIDN 5 PAGE 25
()
COUNTRY A
()
AOSTRACT DATE OF EVENT - 062h78.
POWER LEVEL - 26%.
CAUSE - INSTRUMENT DRIFT.
WHILE PE RF OR M I NG APRM SETD0sN FUNCIIONAL 1EST 4 HDD OLOCK IRIPPED At I2.St. EXCLEDING I.S.
LIMIT OF C /.124.
THE C AU SE IS A11HIOUVAOLL IO SET POINT DRIFT OF R-2 5 DN MODULE BOARD 234.
UPON D I SC DVE RY. APRM #4 PLACED IN BYPASS.
APRM 4 ROD BLOCK SE IDOwN REFEHENCE WAS PROMPTLY RE SE T 10 II.S* IDRESDEN SE T POI N T IS 18.5+/- SE.
()
(}
COMPONENT CDOE INST RU-I NS TRUMENT A T I ON AND CONTROLS SYSTE M CODE IA-RLACTOR IHIP SYSTEMS KEYWORDS FAILUHE5REACIOR. HwR&DRESOEN 2 IOWRI3 INSTRUMENT. SWITCH &INSTRUMLNT. POWER RANGE 3 INSTRUMEN T CALIBRATION 8
)
()
TEST. SYSTEM OPER AH I LI T Y;F AI LUNC. I NS T RUMEN T 8F A I LURE. INHtRENISSET POINT 8DH IF T 8 CDN T ROL ROO DRIVES 8
()
CONTROL 4kE ACTOR PROF ECilON SYSTEM
tussaue wwww gj CORP COut DRS
(
- )
') (!
(?
27/6/0000005-0000206//
46 CONTINUATION 1 PAGE 21
(]
COUNTRY A
(}
AUSTRACT DATE OF EVENT - 062678.
PO WE R LEVEL - 264.
CAUSE - INSTRUMENT DRIFT.
WHILE PE RFOR M ING APRM SETDOWN F UNC i l DNAL TEST 4 RDO ULUCK TRIPPED AF E2 5%. EACELDING T.S.
LIMIT OF < /=8 24.
THE C AU SE IS a} j AT TRIBUT ABLE TO SET POINT DRIFT OF H-25 DN MDOULE BOAR 7 Z34.
UPON D I SC OVE R Y. APRM #4 PLACED IN BYPASS.
APRM 4 ROD DLOCK SE I DUWN REF ERE NCE WAS PROMPILY RESET 90 II.54 (DRESDEN SE T POINT IS $3 5+/- 5%.
(}
COMPONONT CDDE INST RU-I NS TRUMLNT A T I ON AND CONTROLS SYSTEM CO DE IA-REACIDH TRIP SYSTEMS KEYWORDS FAILURE 8pEAC10R. ElWR8DRESDEN 2 (HWR)3 INSTRUMENT. SWITCH 3 INSTRUMENT, POWER R ANGE 5 INSTRUMEN T CALIBRA T ION E
(}
TEST. SYSTEM DPE R AS I L I T Y t F A I h ' IRE. I NST RUMEN T 8F A I LURE, INHERENitSET POINT 5DRIFliCONTRDL ROD DRIVESi
<}
CON T ROL 3 RE AC TOR PROTECTION SYST E M 27/6/0000001-0000206//
A7
(}
ACCESSION MO.
0020140044 J)
TITLE SET PotNT DR IF F IN APRM ROD OLOCK AT DRESDEN 3 CORPAUTH COMMONWE ALTH E DISDN CO., MORRIS, IL DATE 8978
(}
TYPE O
}
MEMO 2 PGS. LTR W/RO 78 -029/0 3L-O TO NRC OIRECTORATE DF REGULATORY OPERATIDNS. REGION III. JULY PS, 1978.
DOCKET 50-249. TYPE--BWH. MF G--GE. m --SGT & L UNDY I
AVAll AVAILABILITY - NRC PUBLIC DOCUMENT RDOM. 1717 H STREET. WASHINGTON. D.
C.
2055% (08 CENIS/PAGE --
)i l
(%
MINIMUM CHAN GE S2.00)
I CATEGORY 8700008090000 EDITION 0080
]
CORP CODE DRS
(}
COUNIRY A
,}
AH S T R ACT DATE OF EVENT - 060378.
POWER LEVE L - 0%.
CAUSE - I NS T RUM LN T DRIFT.
DuaING A TEST. APRM 86 ROD HLDCK I
TRIPPED At 12.5%.
THIS E X C EE DE D T.S.
LIMIT DF E22.
THE CAUSE WAS ATTRIBUTABLE TO SET POINT DHIFT OF R-25 UN MO DU LE UDARD Z34.
UPUN DISCOVERY. APRM 86 WAS PLACED IN BYP ASS.
APRM #6 RDD BLDCK SE1DOWN f
(}
REF EhE NCE WAS PROMP T LY RESET TO 31 54 (DRESDEN SLIPOINT IS 38.5 4/-.55).
,}
C OM PONEN T CODE INSTRU-INSTRUMENTATIDN AND CONTROLS SYSTEM CDDE IA-REACIDH IRIP SYSTEMS KE Y WORDS DRE SDE N 3 (BWR)8 INSTRUMENT. SWITCHilNSTRUMENT. POWER RANGE 8 E NSTRUMEN T C ALI DR A T IONI TE ST. SYSTEM
(}
UPERAUILITY3 FAILURE. INSTRUMEN F 8F A I LURE. I NHER EN T 5 SE T POINi iDR I F T 8 RE ACT OR PROTECTION SYSTEM 8 CONTROL
.)
RODSICONIROL3 FAILURE 3HEACTOR. DWR 27/6/0000005-0000206//
48
()
ACCESSION NO.
0020139862
])
TITLE SET POINT OR IF T IN APRM AT PEACH OOTTOM 2 CORPAUTH PHILADELPHIA ELECTRIC CO..
PA DATE 1978
()
TYPE O
])
MEMU L PG. L1R W / LE R 78-032/03L-e TO NRC UF F I CE OF I & E. REGIDN I. JULY 33. 1978. DOCKET 50-277. TYPE--OWR.
MF G--GE. A E --D E CHI EL AVAIL AVAILAHILITY - NRC PUOLIC DDCUMENT ROOM. 1757 H STREET. WASHINGTON. D.
C.
70555 (08 CENTS /PAGE --
{.
()
C A T EGDRY 3700005090000 EDITION 0080 CORP CODE PEC
{.
COUNTRY A
()
AHSTRACT DATE OF EVENT - 070578.
PO WE R LEVEL - 99X. CAUSE - INSTRUMENT DRIFT.
DURING PERFORMANCE OF SURVEILLANCE TESTING ON THE APRM*S. IT WAS OBSERVED THAT THE SCRAM CLAMP TRIP SET POINT WAS 12SE ON THE "A"
APRM.
THIS VALUE EXCEEDED THE $202 LIMIT.
1HE INST RUMEN T WAS IMMEDIATELY RECALinRATED.
()
COMPONENT CODE INSTRU-INSTRUMENTATION AND CONTRDLS
()
SYSTE M CODE IA-REACIDR IRIP SYSTEMS KEYWOROS FAILUREiHEACTUR. HWR8PEAOi BOTTOM 2 (BWR ) 8 INS T RUMEN T. SW I T CH t I NSTRUMENT. POWER R ANGE ilNSTRUMENT CALIHRATION8 TEST. $Y ST EM OPER AOILI TYiF AILURE. INSTRUMENT 8 FAILURE. INHERENT E SET POINT 8 DRIFT 8HEACTDR g}
PR O T EC T I ON SYSTEM 3
C)
()
l C) 1D 27/6/0000003-0000206//
49 PAGE 22
(}
ACCESSION NO.
OOZOIJ9H68 gg TITLE HCACTOR SCHAM OCCURS DURING CONTROL VALVE 1ES ENG AT ARNOLD CORPAUTH IOWA ELEC TRIC LIGHT & POWER CO., CEDAR RAplOS, IA DATE 5978
(}
1YPE O
()
MEMO 3 PGS. LIR W/LER 78-033 TO NRC OFF I CE OF 1 LE. REGION III. JUNE 30. 1978. DOCKET 50-338, TYPE--HWR.
MFG--bE. AE--DECHTEL AVAIL AVAILAUBLITY - HRC PUBLIC DOCUMCNT HDUM. 1787 H STREE T. WASHINGTON.
D.
C.
2055S (08 CENTS /PAGE --
()
MINIMUM CHARGE
$2.003
()
CATEGORY 1700003090000
[UYlMVCD_
_... _. _ _#FFH
.~...........-
l
()
- )
27/6/0000003-0000206//
49 PAGE 22
(%
ACCESSION NO.
OOZOlJ9868
/)
t TI1LE HEACTOR SCHAM OCCURS DURING CDNTROL VALVE TESTING AT ARNOLD COHPAUTH IOWA E LECIN IC LIGHT L POWER C0.. CE DAR RAPIDS. IA DATE 8978
()
TYPE O
/)
MENU 3 PGS, LTR w/LER 78-035 TO NPC DFF I CE OF 1 & E. REGION IIIe JUNE 30, 1978. DOC KE T 50-338. TYPE--owr.
MF G-6E, AE-O ECH T EL AVAIL AVAILADILITY - NRC PUBLIC DOCUMCNT ROOM, 1787 H STREET, WASHINGTON. D.
C.
20555 (08 CENTS /PAGE --
()
/)
CATEGORY 1700005090000 EDITEDN 0080 COkP CODE HGN
()
COUNTHY A
/}
AHSTRACI DATE OF EVENT - 065776.
PO WE H LEVEL - 62%.
CAUSE - HPS RELAY AUM IL E AR Y R EL AY SWI TCHES LOUSE.
DURING WEEKLY CONTHDL VALVE TESTING. AN AUIDMATIC REACTOR SCHAM OCCURRED.
SUD SEQ UEN T I NVE S T I GA T ION HEVEALED THE SCRAM H AD OCCURRED DUE 10 7 REACTOH PHOTECTION SYSTEM HELAY AUXILIARY SulTCHES BECOMING LODSE ON p
THE RLLAY AND HESULTING IN ftE HACK UP SCH AM VALVES BEING ENERGIZED.
THE CAUSE E.F THE SwlTCH PHUBLEMS
/) '
WAS TRACED TO THE SCkEw wHICH kETAINS T HE OPER A T ING AHM OF THE Aux lLI AR Y S u li CH HE CDM I NG LOOSE A ND l
OACKIPb OUT.
THIS C AUSED MISOPER AT ION ANO IN ONE CASE ALLOWED THE AR M TO FALL OFF.
THE RETAINING SCHEwS AND OPERAIING ARMS WERE RE INST ALLED AND T I GHT E NED.
I
/} j
()
COMPONENT CDDE R E LA Y A -R E L A YS SYS TE M CDDE IA-NEACTOH TRIP SYSTEMS KEYWOHOS FAILUHtiREACluR, OWHISCHAM. RE AL I T E ST. SYSTEM OPERABILITYiRELAYSIREACTOR PRO TE CT ION SYSTEM 5INSTRUMENTe SW I T CHiF ASTENEH3 AUXI LI ARYiF AILUHE, EOU RPMENiiF AILUHE. COMMDN MODE if A R LORE. LATENT 8FAILUHE, INHERENil
() f
(}
SCRAM, REAL;FAILUHE. LATENT 27/6/0000001-0000206//
50 g
ACCESSION NO.
OOZOl39H52 c) l,
()
TITLE ROD OLOCK MONITOR FAILS INDICATING DOWNSCALE AT ORUNSWICK 2 CORPAUTH CAHOLINA POWER & LIGHT C O., HALEIGH. NC DATE 1978 j
TYPE O
()
MEMO 3 PGS. LYR w/LLR 2-78-056 TO U.S. NRC. REulDN II. JULY 23. 1978 DOCKET S0 -324. i YPE--H wR. MFG--GE.
- }
AE -UL CC AVAIL AVAILABILITY - NHC PUHLIC DOCUMEN T kUOM, 1787 H SiHEET, WASHINGTON, D.C.
20555(08 CENTS /PAGE --
MINIMUM CHAR GE S2.OO !
()
CATEGDRY 3700005090000
,}
EDITION 0080 CORP CODE AHV COUNTRY A
C)
AHSTRACT DATE OF EVENT - 062278.
POWER LEVEL -32X.
CAUSE - DEFECTIVE R UD SELEC T SWITCH.
A CONTROL OPERATOR
,}
WAS PULLING ROD S F OR A NDHMAL POWER INCHEASE WHLN THE ROD SELECT SWITCH wAS DEPHESSED F OR SELECTION OF THE NE KI HUD Tu OE PULLED.
ROD BLOCK MONITDH CH ANNE L " A" FAILED I NDI CA T IN G DDwN SC ALE.
THE DEFECTIVE ROD SELECT SwlTCH. WHICH WDULD NUT RETUNN FROM THE PUSHED-IN POSI T ION. SHORTED RESISTOR "R5" IN THE
(-
REACTOR MANUAL CONTHDL RELAY MODULE ONE.
THIS IN TURN CAUSED RBM CHANNEL A 10 F A IL INDICATING
,}
OOwNSCALL.
THE DE FE CT IVE ROD SLLE C T SwlTCH AND SHORTED "H S" RE S I S T DR WEHE RE PL A CE D.
ROD SELECT SW I T CHES PRE SENTLY IN USE ON TFE DPERAIORS CONSDLE ARE BEING REPLACED W11H A M DH E RELIABLE Switch.
COM PONEN T CODE INS 1HU-INSTRUMENIATION AND CONTHOLS (j
SYSTE M CODE HU-REACTIVITY COMIROL SYSTEMS g}
KEYuuR DS F A I LUN E 8HE ACTOR e OwHEMONITURICONTROL SYSTEMICONIRDL ROD DRIVESIREACTOR CONTROL; FAILURE. INSTRUMENil FAILURE, I NHER EN i i MO DI F I CA T I ON i l NS1 HUME N T. ABNONMAL INDIC%TIONERNSTRUMENT. SWITCHIBRUNSWICK 2 (DwRI
()
27/6/0000005-0000206//
$1 (g
ACCESSION NO.
00Z0339650 TITLE APHM SCHAM TRIP SE T T INGS FOUND TO BE LOW AT MONT I CELLO CORPAUTH NORTHEHH ST ATES POWER CO.,
M I NNE A POLIS. MN fi DATE 1978
()
TYPE O
()
(h
()
C) 27/6/0000003-0000206//
SI CONTINUATION I PAGE 23
()
MEMO 2 PGS, LTH w/LER 78-011/01T-0 10 NRC OFFICE OF I C E. REGION III. JUNE 20. 1978. DOCKET $0-263.
()
T YPE -owr. MF G-GE. AE--t3E CH T EL AVAIL AVAILADILITY - NHL PUBLIC DOCUMENT RUOMe 1787 H STHEE I, WASHINGTON. D.
C.
205S5 108 CENTS /PAGE --
MINIMUM CHARGE S2.OO!
()
CATEGDRY 1700008090000
()
EDITIDN 0079 CORP CODE NSP
}
COUNTRY A
AUSTR ACT DATE OF EVENI - 060678.
POWER LEVEL - 90s.
CAubE - PUwER SHAPE CH ANGES AF TER Call 8RATIDN.
DUNING
()
y ()
J NONMAL ASCENSION TO HATED power. BT WAS DISCOVEHED THAT 4 OF 6 A PR M SCRAM TRIP SETifMGS wERE 3 TO 42 LOW. EMCEEDING T Ht.
T Low J O2 WER.
SUBSEOUENT L
HMS WEHF CgDR
l (y
Unst swan TYPE O
g.
()
)
(2 27/6/0000003-0000206//
SI CONTINUATION I PAGE 23 j
(N MEMO 2 PGS. LIR w/LER 78-011/017-0 TO NRC OFFICE DF I & E. REGION III. JUNE 20. 3978 D DCK E T 50-263.
/)
TYPE-OWR, MFG-GE. AE -Ut CH IE L AVAIL AV A I LAO IL I T Y - NHL PUBLIC DOCUMENT kUOM. 4717 H STREET. WASHINGTON.
D.
C.
20SS$
(08 CENTS /P AGE --
MINIMUM CHARGE 12.00)
(S CATEGORY 5700008090000 r)
ED I T I LM 0079 CORP C UDE NSP l
CCUNTRY A
l
(}
Au$iRACT DATE OF EVENT - 060678.
POWER LEVEL - 90s.
CAUSE - POWER SHAPE CH ANGES AF TER CAllBRATIDN.
DURING
/} j NORMAL ASCE NS I ON TO RATED POWER. IT WAS DISCOVERED THAT 4 OF 6 A PR M SCRAM 1 RIP SETTINGS WERE 3 TO 43 LOW. EXCEEDING THL 2E ALLDWED OY TECH S PECS.
APRMS WERE CALIDRATED AT LDW (503) POWER.
SUBSEDUENT a
POWER INCRE ASE S AND POWER SHAPE CHANGES CAUSED THE APRMS TO READ LOW DUE 10 BIASED DISTRIBUTION DF l'
(}
LPRMS WIIHIN APRM P A GES.
GAIN SE T T INGS WE RE I MMEDI A TELY CDRRECTED.
PR OCE DURE S REVI SED TO REQUIRE APRM
() k CHECKS AGABNSI INSTANIANf0VS COMPUTER HEAT S AL ANEE EVLRY 802 OF POWER CHANGE.
COMPONENT CODE INSTRU-INSTRUMENT AT ION AND CONTROLS SYSTEM CODE RA-GEACTUR TRIP SYSTEMS
(}
KEYWORDS FAILURE 8HEACTOR. UWR 3MONTI CELLO ( D wR l i l NST RU ME N T. SulTCH; REACTOR PROTECTION SYSTEM $ FAILURE. I NST RUME N T 4
?) I Test. SYSTEM O PE R A B I L l i V 8 F A ILURC. ADMINISTRATIVE CONTROLiPROCEDURES AND MANUALS 8 ENSTRUMENT CALIBRATION 8 POWER D I ST R I BU T I ON ER E AC T OR STARIUPIINSTRUMENT. POWER R ANGE
(}
27/6/0000005-0000206//
S2
,)
^
ACCESSION NO.
0020139648 TITLE SET POINI DRIFT IN I NCORC MONI TOR AMPLIFIER AT DRESDEN 1 CORPAUTH COMMOMWE AL TH EDI SON CD.. MORRIS. IL
(}
DATE 8978 J} !
TYPE O
MEMO 2 PGS. LIR w/RO 78-022/03L-O 10 NRC DIRECTORATE Dr REGULATORY OPER AT IDNS. REGION III. JUNE 16. 3978
(
DOCKET 50-080. T V PE--0 W R. MFG--GE. AE--DE CHT E L
(}
AVAIL AVAILABILliY - NRC PUOLIC DOCUMENT ROOM. 1717 H STREET. WASHINGTON. D.
C.
20SSS (08 CEN TS/PAGE --
() l*
MINIMUM CHA R GE S2.00)
CATEGORY 1700005090000 EDIllON 0079 (i
CORP CODE DRS
])
COUNTRY A
ABSTRACT DATE OF EVLN1 - 052578.
POWER LEVEL - 664.
C AUSE - RESISTOR ORIFT.
WHILE PERFORMING INCDRE CALIBRATION TESIS IN CORE MONITOR AMPLIF IER RO9A wAS FOUND 10 TRIP AT 1384.
T.S.
2541 REDUIRES A
(}
LIMIT OF </m 125% FULL SCALE INDICATION.
THE CAUSE IS ATTRIDUTED TO ORIFT OF THE TRIP ADJUS T I NG
}
DIASING VOLIAGE 2SK OHM RESISTDR OR CHANGING RESISTOR CHAR ACT ER E ST I CS.
D1E HIGH TRIP WAS PROMPTLY A D JUSI ED 10 336% AND THE TEST WAS COMPL E T E D.
COMPONENT CODE INSTRU-INSTRUMENTATION AND CONTROL.S
(,
SYSTEM CODE IA-REACIOR TRIP SYSTEMS
() '
KEYWORDS FAILUREIREACIOH. DwR EDRE SDEN I ISWR)3 INSTRUMENT. Swl TCHI EN S TRUMENI CAllBRATIDNIINSTRUMENT. AMPLIFIER $
TESI. SYSTEM OPER A9 8 Ll i Y 3 F A ILURE. I NSTRUMENT IF AI LURE. IMHERENTISET POI NTiOR IF T 8RE ACT OR PROTECTBON f
SY S T EM ; 1 NS T R UMEN T. IN CDRE 27/6/0000005-0000206//
S3 ACCESSION NO.
00Z0139647 18TLE SET POINT ORIFT IN INCDRE MONITOR AMPLIFIER AT DRESOEN I
()
CORPAUTH COMMONWE ALT H EDI SDN CU..
MORRIS. IL (g
DATL 1978 TYPE O
MEMO 2 PGS. LTR w/LER 78-023/03L-O TO NRC OIRECTORATE OF REGULAfDRY OPERATIONS. REGION III. JUNE I6. 1978
()
DOCKET 50-010. T Y PE--U wR. MF G--GE. AE--DECH T EL
()
AVAIL AVAILABILITY - NRC PUOLIC DOCUMENT ROOM. 1787 H STREET, WASHINGTON. D.
C.
20555 (08 CENTS /PAGE --
MINIMUM CHA R GE S2.OO)
CATEGORY 1700005090000
()
EDITION 0079
-)
CORP CODE DRS k
()
1
()
il 27/6/0000001-0000206//
S3 CONTINUATEDN I PAGE 24 O
CDUNTRY A
g AOSTRACT DATE OF EVENI - 060278.
POWER LEVEL - 67%.
CAUSE - NESISTON DRIFT.
WHILE PERFDRMING INCORE CALIHRATION TESTS. I NCOkE MUNITUR AMPLIFIER IIJC wAS FOUNO 10 TRIP AT 8262.
TECH SPECS REQUIRES A LIMIT OF </= 12SE FULL SCALE I ND I C All ON.
THE CAUSE IS ATTRIBUTED TO DRIFT OF THE APPLIED BIASING
(}
VOLTAGE VIA THE IRIP ADJUSTING 2SK DHM RESISTOR UR CH ANGING RE SI ST DR CHARA C T E R I S T ICS.
THE HIGH TRIP
[g WAS PROMPTLY ADJUSTED TO 316% ANO THE TESI WAS COMPLETED.
COMPONENT CODE INSTRU-INS'eRUMENTATION AND CONTROLS SYSTEM CODE B A-RE AC10H TRIP SYSTEMS
()
KEYWORDS F AILURE tRE ACT DR. HWR;ORESDEN I ( BWR I 8 t NST RUM EN T.
SWliCH1 INSTRUMENT CALIBRATIDN3 INSTRUMENT. AMPLIFIER;
()
I' I NS T RUMENT. IN LORE &TESI. SYSTEM DPER AB ILI T Y iF AI LURE. INSINUMtNT8 SET POINT 3 DN IF I 8 RE ACT OR PROTECTION W3NYEWWYNGh.J CKCCD
b5 MODE Db' D
D 0
O 27/6/0000003-0000206//
53 CONTINUATION 1 PAGE 24 COUNTRY A
Q I
AUSTRACT DATE OF EVENT - 060278.
POWER LEVEL - 672.
C AUSE - RESISTOR DR IF T.
WHILE PERFORMING INCORE CALIUHATION TESTS. I t<.DR E MONITOR AMPLIFIER Il3C WAS FOUNO TO TRIP AT 3262.
TECH SPECS REQUIRES A LIMIT OF
2F/6/0000001-0000206//
7F CONTINUATION 1 PAGE 34 SYST E M CODE IA-REACTOR TRIP SYSTEMS
{)
(% -
KEYwDRDS FAILURE 3REACTO4 DwR8DRESDEN 3 ( B wR ) 8 I NS T RUME N T. SwlTCH8 INSTRUMENT CALIBRATION 33NSTRUMENT. POWER R ANGEi Test. SYSTEM OPtRASILITY5 FAILURE, I NS TR UMEN T 3 F A I LUR E.
INHERENTESET POINT 5DRIF T 3RE ACTDR PROTECTIDN SYSTEM 27/6/0000001-0000206//
78 ACCESSION NO.
00ZOI29448 TITLE SET POINT DRIFT IN A PR M AT F I TZP A T R ICK
()
COkPAUTH NIAGARA MOHAWK PDwER CORP., SYRACUSE. NY
{}
DATE 8977 TYPE O
AVAIL AVAILABILITY - NRC PUBLIL DOCUMENT ROOM. 1717 H STREET. WASHINGTON. D.
C.
20545 (OS CEN T S /P AGE --
/) j MEMO 2 PGS. LIR w/LER FF-Il TO NRC DI REC TOR A T E OF LICENSING. MARCH 30. 1977. DO CKE T 50-333. TYPE--BwR.
()
MF G --G. E., AE--STUNE & WEDSTER
?
MINIMUM CHARGE S2.UD)
C A T EGORY 1700005090000
()
EDITEDN 0075 i)
l ABSTRACT DATE OF EVENT - 022777.
POWER LEVEL - 585.
CAUSE - I NS T R UME N T DRIFT.
DURING A SURVEILLANCE. APRM 3 l (}
DODNSCALE TRIP DID NOT COME IN AT TFE SPECIFIED SET POINT.
IT wAS RESET TO THE SPECIFIED SET POINT.
/)
CDMPONEN T CODE INSTRU-INSTRUMENIATIDM AND CON TR DLS SYSTEM CODE IA-REACTOR 1 RIP SYSTEMS i
KCY wuR DS F A ILURE 8 HE ACTOR. Sw R 3F I T ZP A TRICK IBwR)3 INSTRUMENT. SWITCH 8 INSTRUMENT C AL IB R A T I ON $ I NS T RUME N T.
POWER l ()
RANGEITEST. SY ST EM OPER AB I L I T Y 5 F A I LURE. I NS T RUMEN T 3 F A I LURE. INHEKENT ISET POINT EDRIF T 8 REACT DR PROTECTION P)
SYSTEM 27/6/0000001-0000206//
79
()
ACCES$10N NO.
00E0828938 i)
TITLE SET POINI DRIFT IN BRM AT COOPER CORPAUTM NE HR A SK A POOLIC POWER DISTRICT. BROwNVILLE. NE DATE 897F
(}
TYPE Q
{}
MEMO 3 PGS. LTR w/LER 77-36 10 NRC OFFICE OF I & E. REGION IV. AUG. 36. 1977. DOCKET 50-298. T YPE --U w R.
MF G--G. E.. AE--uuRNS & ROE AVAIL A V A I LA B I L I T Y - NRC PUBLIC DOCUMENT RDOM. IFIF H STREET. WASHINGTON. D.
C.
20545 808 CENTS /PAGE --
()
)
CATEGOHY 3700005090000 EDITIDN OOF4 CORP CODE NPP
()
COUNTRY A
- }
ABSTRACT DATE OF EVENT - 04867F.
POWER LEVEL - 04.
CAUSE - INSTRUMENT DRIFT.
DURING A TEST WITH THE UNIT IN COLD S HU T DO WN. IRM H WAS FOUND TO READ 80 AS UPPOSED TO 825 wHEN A TEST SI GNAL w AS INpui.
THE GE MODEL 394M672G006 IR M MEAN SQUARE VOLT A GE-W I DE RANGE MONITOR EXHIHITED INSTRUMD4T DRIFT IN 2 CO MPON E N T (a
MDOULES.
THE MODULE S WEkE RECALlHRATED AND RETURNED TO SERVICE.
,)
COMPUNENT CODE INSTRU-INSTRUMENIATIDN AND CONTROLS SYSTEM CODE IA-REACIDR TRIP SYSTEMS KE Y wDR DS FAILUREIREACTOR. BukiCOOPER (owr ) 3 t NST RUMEN T.
INTERMEDIATE R ANGE $ INSTRUMEN T CALIBRATIDN3 INSTRUMENT.
()
SwlTCH3RLACTOR PROTECTIDN SYSTEMITEST. SYSTEM OPER Au l LI TY 8 SE T POINTEDRIFT5 FAILURE. INHERENT 8 FAILURE.
{)
INSTRUMENT 27/6/0000003-0000206//
80
()
ACCESSION NO.
00Z0128929 (g
TITLE APRM FLUw INDICATION DECREASES AT CDuPER CDRPAUTN NE UR ASK A PUOL I C POWER DISTRICT. BROwMVILLE. NE DATE 19F7
()
TYPE Q
(g MEMO 3 PGS. LTR w/LER 77-44 TO NRC DFFICE OF I L E. REGION IV. SE P T.
9.
1977. D DCKE T 50-298. T YPE--HwR.
()
(I
()
C) 27/6/0000001-0000206//
80 CONTINUATION I
PAGE 35
{}
MF G--G. E.. AE--DURNS & ROE
()
AVAIL AV A ILA B I L I T Y - NRC PUBLIC DOCUMENT ROOM. 1717 H STREET. WASHINGTON. D. C.
20545 (08 CENTS /PAGE --
CATEGDRV 8700004090000
()
EDITION 00F4
()
CORP CODE NPP COUNTRY A.
1 ADSTRACT DATE DF EVENT - 08I077.
POWER LEVEL - 921.
CAUSE - DEFECTIVE I SOL AT ION A MPL I F I E R. DUR ING ROUT INE J ()
OPERATION. AVERAGL PUwER RANGL MONITDH F FLOW INDICA T ION DECRE ASED TO 672.
THE FAILURE WAS
()
INTCRMilfENT AND C AU SED AN A PR M UPSC AL E AL ARM.
fHE GE MODEL 13bM3088AAGI SUMMER UNIT EMHIDI TED 1
N J1H M O T I E N T DECREASED FLOW OUTPUT SEGNAL TO APRM F. A DEFECTIVE ISULATIUM AMPLIFIER W AS F OUte) SN THE j
(
t
(y IYPE u
MEMO 3 PG$e LIR U/LER F7-44 T O NRC DF F I C E O F I & Ee RELION IVe SE Pi e 9e 1977. DDCKET 53-293. T YPE--5WH,
(
I)
(?
')
27/6/0000005-0000206//
80 CONTINUATION I PAGE 35
(} 9 AVAIL AV A I LA O I LI T Y - NRC PUHLll DOCUME NT RODN. 1717 H STREET. WASHINGTDNe D. C.
20545 ION CENTS /PAGE --
()
MFG--G.E.,
AE--HURNS C RCE MINIMUM CH AR GE S2 00)
CATEGDRV IF00004090000
(}
EDITION 00F4
/)
CORP CODE NPP COUNIHY A
ABSTRACT DATE OF EVENT - 088077.
POWER LEVEL - 923.
CAUSE - DEFECTIVE I SOL AT ION A MPLI F I ER. DUR ING ROUT INE
(}
OPERATIDN, AVERAGL POWER. RANGE MON!!DR F FLO* INDI CA T ION DECRE ASED TO 67X.
THE FAILURE wAS
{)
INT EHM I T TENT AND C AU SE D AN APHM UPSCALE AL AH M.
THE GE MODEL 13 bS3088 A AGI SUMMER UNIT EXHIDITED INTERMIT TENT DECREASED FLOW OUTPUT SIGNAL IJ A PR M F. A DEFECTIVE ISOLATIDM AMPLIFIER WAS FUUND IN THE SUMMER UNIT.
THE AMPLIFIER W AS HE PLACE D.
(}
COMPONENT CODE INSTHU-INSTRUMENTATIDN AND C ON I R OL S f)
SYSTEM CODE SA-HEACIOR THIP SYSTEMS K E Y WDHDS FAILURE 5HEACTOR. HwR$CDOPER (owr ) 3 I NST RUMENT. POWER RANGEllNS1RUMENT. AMPLIF IERilNSTRUMEN T, SWITCH 3 FAILUHE. I NS TH UMEN T 8 RL AC IOR PROTECTION SYSTEM 3FLOwtFAILUHE. INHERENT 27/6/0000005-0000206//
88 ACCESSION ND.
0020528620 TITLE ERROR FOUND IN REACTOR WATER LOW LEVEL SCRAM SWITCHES AT BNOWNS FERHY 2
(}
CORPAufH T E NNE SSLE VALLEY AUTHORITY, CHATTANUOGA. TN
()
DATE 5977 TYPE O
MEMO 2 PGS, LTR w/DFRO-50 -260 /7 7 t l TO NRC OFF ICE OF I &E. RE GI ON II. SEPT.
I.
39FF. DOCKET 50-260.
()
T YPE --B w R. MF G--G.E., AE --T V A
}
AVAIL AVAILABILITY - NRC PUDLIC DOCUMENT ROOM. 1717 H STREET. WASHINGTON, D.
C.
20545 (08 CENTS /PAGE --
CATEGORY 5700003090000
(}
EDITION 0074 r)
CORP LDDE TVA COUNTRY A
ABSTRACT DATE OF EVENT - 061477.
POWER LEVEL - OX.
C A USE - WATER EVAPORATED FROM REFERENCE LEG.
DUHING
(}
ST AR10P FROM COLD SHUIDOWN. HEACIOR WATER C DLU MN O REFERENCE LEG B WAS LDw PRODUCING A #20-INCH ERROR (g
IN THE 2 REACfDH WATER LOW LEVEL SCRAM SW I T CHE S.
THE APPARENT CAUSE WAS E ITHER EVAPORATION OF WATER FHOM T HE REFERENCE LEG DURING COLD SHUIDOWN DR INADVERTENT DPERATIDN OF THE EOUALI 2ER OR DRAIN VALVES.
THE REFERENCE LE G WAS REFILLED AND WATER LEVEL A GREEMENT C ONF I R ME D.
(}
COMPONENT CODE INSTRU-INSTRUMENTATIDN AND CONTRULS rg SYSTEM CODE I A-RE ACION THIP SYSTEMS KEYwuRDS FAILURE 4 REACTOR, O wR & BROWNS FERHY 2 (D WR ) 8 I NST RUMEN T. SwlTCH3 SENSORS. L EVE L 3 PRES SURE VESSELSIFAILURE.
INSTRUMENitTESie SYSTLM OPERASILITYiINSTRUMENT, ABNORMAL I ND I C A T IONiR E A CTOR PROIECTION SYSTEMiwATERI
()
PSPES AND PIPE FIITINGS f) 27/6/0000003-0000206//
82 ACCESSIUM NO.
0020I26622
(}
TITLE iwO APRM CHANNELS DYPASSED SIMULTANEDUSLY AT VERMONT YANKEE g}
CORPAUTH VEMMONT YANKEE NUCLEAR PUwER COHP e HU T L AND. VT DATE 1977 TYPE O
}
p*
MEMU 3 PGS. LTR w/RO-77-3 6/3L TO NRC OFFICE OF I & Ee REGIDN I,
JULY 7e 19 7 7. DOCKE T 50-2 7 8.
T YPE --O wR.
MF G--G.E., A E--E B A SC O AVAIL AVAILABILITY - NRC PUOLIC DOCUMENT RDOM. 3787 H STREEle WASHINGTON. D. C.
20545 ION CENTS /PAGE --
MINIMUM CHAR GE S2.OO)
()
CA T EG ORY 3700003090000
()
EDITION 0073 CORP CODE APZ COUNTRY A
/1 ABSTRACT DATE OF LVENT - 06307F.
POWER LEVE L - 9 F%.
CAUSE - IN f ERMI T TENT MALUFNCT ION OF Sw!TCH.
WHILE
"),
D PERF ORM ING APRM FUNCTIDNAL SURVE I LL ANC E TESTING. THE CONINUL ROOM DPERATOR PLACED THE CHP9-5 APNM (I
()
()
4D 27/6/0000003-0000206//
82 CONTINU4TIDN I PAGE 36
()
BYPASS SwliCH F8-5 38 IN THE CH ANE L D POS I T I ON AND DOSERVED A SIMULTANEOUS OYPASS INDICAT ION FOR APRM gg CHANNELS D AND F.
w HE N THE SwlTCH WAS NEIUNNED TO THE NEUTRAL POSITION, BOTH BYPASSES CLEARED.
THE FAILUNE COULD NOT DE REPEATED.
THE LVENT IS ATTRIHUTABLE TO AN IN TERMI T IE NT MALFUNCTIDN OF A GE SWITCH NO. CR2940UH203G.
T HE SWITCH WAS HEPLACED.
~
(}
COMPONENT CODE CK T BRK -C IRCU I T CLUSE RS/ INT E RH UPI EN S
()
SYSTEM CODE IA-REACTOR THIP SYSTEMS KEYWORDS FAILURE 3HEAC10H, OwH& VERMONT YANKEE (owr 33 INSTRUMENT, SWITCHEDVPASSilNSTRUMENT. POWER RANGE THE AC TOR PROIECTION SYSTEM 3FAILUHE. INST RUMENI 5 F A ILURE, INHEHENT
^
U 27/6/0000001-0000206//
83 W
f mmmwamme
kRFOEMING C T I[JN Ak "((hVbLh~ANC E ' T N T I 5d" ' THE CONTROL ROOM OPER A im PL ACED THE CRP9-5 LPRM 5 M F b
9 4
e7/6/0000005-0000206//
82 CONTINUATION l PAGE 36 p
BYPASS SWITCH 70-530 IN THE CHANEL D POSI T ION AND OOSERVED A SIMULTANEOUS BYPASS I ND I C A T I ON F OR APRM g
CHANNELS D AND F.
WHEN THE SWITCH wAS RETURNED 10 THE NEUIRAL POSITION. BOTH BYPASSES CLEARED.
THE FAILURE COULD NOT DE REPEATED.
THE LVENT IS ATTRIBUTAOLE TO AN INTERMI T TENT MALFUNCTION OF A GE SWITCH NO. CR2940UR203G.
T HE SuliCH WAS REPLACED.
Q COMPONENT CODE CKTORK-CIRCUIT CLUSE RS/ I NT E RRUpl ER S g
I SYSTEM CODE IA-REACTOM TRIP SYSTEMS R E YwORDS FAILUREIREACTOR. UwR8VERMONI YANKEE GOwR)3 INSTRUMENT. SW I T CH 8DVPAS$ 3 8 NS TRUC'e f.
- Ow E R RANGEIREACTOR PROIECTION SYSTEMiFAILURE. INSTRUMENiiF AILURE. INHERENT 27/6/0000005-0000206//
83 ACCESSION NO.
0020125555 i
TITLE SET POINT DRIFT IN APRM AT DRESDEN 3 I Q CORPAUTH COMMONWEALTH EDISDN CO., MORRIS. EL g
I DATE 1977 TYPE O
f MEMO 3 PGS. LTR w/RO 50-2A9/1977-17 TO NRC DIRECTORATE OF REGULATORY DPERATIONS. REGION III. JUNE 23. 1977, I Q DOCKET 50-249. TYPE--esR.
MFG--G.E..
AE ~SGT & LUNOY
<}
i AVAIL AVAILABILITY - NHC PUHL I C D OCUME N T ROOM. IFl7 H STREET. WASHINGTON. D.
C.
20545 (068TNTS/PAGE -
MINIMUM CHARGE S2.00)
CATEGORY 1700005090000 Q
EDITION 00F3 g
CORP CODE DRS COUNT 4Y A
AOSTRACT DATE OF EVENT - 052677.
POWER LEVEL - Fot.
C AUSE - ELECTRON IC DR IF T.
AN APRM RS CONSIDERED Q
INOPERABLE IF 17 IS RECE EVING LESS THAN 50% OF SIS NORMAL COMPLEMENT OF LPRM INPUTS.
APRM WAS FOUND 10 g
GENtRATE AN INOP WHEN 60% OF THE LPRM INPUTS WERE OYPASSED.
THE CAUSE WAS ATTRIBUTED TO ELECTRONIC DRIFT.
THE 1 RIP REFERENCE CARD (GE TYPE GE 13601339G1) wAS ADJUSTED TO OOTAIN THE PROPER INOP INDICATION.
' ; Q COMPONENT CODE INSTRU-INSTRUMENTATION AND CONTROLS q
l SYSTEM CODE IA-REAC1DR 1 RIP SYSTEMS KEYWORDS FAILUREikEACTOR. BwAIDkESDEN 3 (BWR)& INSTRUMENT. POWER R ANGE i t' DST RUMENT. S W I TCH t INSTRUMEN T CALIBRATION 8 l
TEST. SYSTEM OPERASILITYiFAILURE, I NST R UMEN T &F A ILURE. INHERENitSET POINTiDRIFT3 REACTOR PROTECTION Q
SYSTEM Q
27/6/0000001-0000206//
84 ACCESSION HO.
0020125286 Q
YITLE SET POINT ORIFT IN IN-CORE FLUM AMPLIFIERS AT DRESDE N I
]
CORPAUTH COMMONsEALTH EDISON CO..
M OR R I S. ILL.
DATE 1977 TYPE O
Q MEMO 3 PPS. LTR W/HO 50-010/1977-13 TO U.S.
NRC. REGION II I. M AY 27. 197T. DOCKET 50-080. T YPE --D e R.
)
MF G--(.E.. AE--GELHTEL AVAll AVAILABILITY - NRC PUBLIC DOCUMENT ROOM. 1717 H STREET. WASHINGTON. D.
C.
20545 (08 CENTS /PAGE -
$2.00)
Q CATEGORY IF00003090000
.J EDITION 0073 CORP CODE DRS COUNTRY A
Q ABSTRACT DATE OF EVENT - C42877.
POWER LEVEL - 59%.
CAUSE - INSTRUMENT DRIFi.
IN-CORE
)
FLUE AMPLIFIERS 1040. 1900. 3120. 333A. 1130. ANO I l 4 D W ER E F OUND TO TRIP AT 3334. 1344. 1293. 129%.
3324. AND 133% POWER RESPE CT I VELY.
THE TECH SPEC LIMI TS IS I25X.
THE EVE N T IS ATTRIBUTED TO I NS T RUMt:NT DRIFT OROUGHT ON BY ADDITIONAL HEAT IN THE CONTROL ROOM.
THE ABNORMAL 1E MPER A TURE S WERE DUE, G
TO REPARHS ON T HE. AIR CONDI T ION I NG SYS T EM.
THE AFFECTED AMPLFIERS WERE RESE T.
()
COMPONENT CODE INSikU-INSTRUMENTATION AND CONTROLS SYSTEM CODE IA-REACTOR TRIP SYSTEMS KEYWORDS FAILURE 5 REACTOR. OwREDRESDEN 1 ( BWR 3 3 INSTRUMEN T. SW I T chi lN STRUMEN T CALIORATIONilNSTRUMENT. IN COREE Q
I N S T RUME N T. AMPLIFIERITEST. SYSTEM OPERABILITY 3 FAILURE. INSTRUMENT 8 SET POI Ni iDRIFT EF AILURE. INHERENT 8 Q
REACTOR PROTECTION SYSTEMETEMPERATURE O
O O
0 27/6/0000005-0000206//
85 PAGE 37 Q
ACCESSION NO.
00ZOS2*i208 Q
TITLE SET POINT DRIFT IN POWER RANGE NEUIRON MONITORS AT DRESDEN I CORPAUTH COMMONWEALTH EDISON 00..
MORRIS. ILL.
DATE 1977 Q
TYPE O
Q MEMO 3 PPS. LTR W/RO 50-080/1977-12 TO U.S. NRC. RE GION III. MAY 16. 3977. DOCKE T 50-080. TYPE--owr.
MF G-G. E.. AE--BECHTEL AVAIL AVAILABILITY - NRC PUBLIC DOCUMENT ROOM. 1787 H STREEl. WASHINGTON.
D.
C.
20545 (08 CENTS /PAGE -
Q MINIMUM CHARGL
$2.003 Q
CATEGORY I700003090000 (JDQ1 R OM OO7Q
y a..s e au. %
e a-.= %. e sua.eLace
-,...w.
- w. w ews....... - - - -.. - -. - - ---- - -.
REACTOR PROTECTION SYSTEM 1 TEMPERATURE O
9 C
O 27/6/0000005-0000206//
85 PAGE 37 p
ACCESSION NO.
00Z012S208 Qi I
TITLE SET POINI DRIFT IN POWER RANGE NEUIRON NJN I T OR S A T DRESDEN I CORPAUTH COMMONwE ALTH Et*l SON CO.,
MORRIS. ILL.
DATE 1977
{
TYPE Q
Q MEMO 3 PPS. LTR w/RO 50-080/1977-12 TO U.S.
NRC, RE GION IIIe MAY 16, 1977. DOCK E T 50-010. T YPE-H w R.
MF G--G. E.. AE--DECHIEL AVAIL AVAILAHILITY - NRC PUBLIC DOCUMENT ROOM, 1787 H STREET. WASHINGTON. D.
C.
20S45 (08 CENTS /PAGE -
Q MINIMUM CHARGL S2.00)
QI CATEGORY I70000i090000 EDITION 0073 CORP CCUE DRS p
COUNTRY A
P AOSTRACT DATE OF EVENT - 042377.
POWER LEVEL - 59%.
CAUSE - INSTRUMENT DRIFT.
DURING SURVEILLANCE TESTING, POWER RANGE NEUIRON MONITOR CH ANNELS I IMO. 5.2JR.338) AND 2 (NO. 5.238,333) WERE FOUND TO ACTUATE AT 832% AND 825% POWER. RE SPE CT !W ELY.
THIS EXCEEDS THE 123% TECH SPEC LIMIT.
THE CAUSE WAS INSTRUMENT Q
DRIFT BROUGHT UN t9 Y ADDillONAL HEAT IN THE CONTROL ROOM.
THE ABNORMAL TEMPER A TURES WE.*8:
CAUSED B) A
]
WEEK-LONG AD JU SI ME N T OF THE AIR CONDI T IONING SYSTEMS.
THL CHANNELS wERE RESET TO ACTUATE AT 8854 POWER AND THE AIR CONDI T IONI NG SYSTEM WAS RETURNED T O OPER A T ION.
COMPONENT CODE INSTRU-INSTRUMENI AIION AND CON T ROL S p
SYSTE M CODE IA-REACTOR TRIP SYSTEMS
}
KEYWORDS FAILUREtREACTUR. OWRIDRESDEN I ( U W R ) i l NS T RU MEN i e SWITCH $ INSTRUMENT C A L I DRA T I ON 3 I NS T RUMEN T. POWER RANGE 8 TEST, SYSTEM OPER AB I L I T Y 3 F A ILURE. INSTRUMENT 3 SET POINT 40 RIFT 3 FAILURE. I NW.REN T IRE A CT OR PROTECTION SYST EM iiE MPERA TURE $ NEUTRON 27/6/0000005-0000206//
86 ACCESSION NO.
0020125207 title SCRAM DUMP TANK LEVEL SulTCH FAILS TO OPERATE AT DRE SDE N I p
(ORP AU T H COMMONWEALTH EDISON CO..
MORRIS, ILL.
]
DATE 1977 YYPE O
MEMO 3 PPS. LIR W /R O 50-080/I977-88 TO U.S.
NRC. REGION III. MAY 20, 3977. DOCKET S0-050. I YPE-O WR.
p MF G-G. E. e AE-OELHTEL g
AVAIL AVAILABILITY - NHC PUHLIC DOCUMLNi ROOM. '1717 H STREET. WASHINGTON. D.
C.
20545 (08 CENTS /PAGE -
MINIMUM CHARGE S2.00)
CATEGORY 1700003090000 g
EDIiIUN 0073 g
CORP CCDE DRS COUNINY A
ACT DATE OF EVENT - 042277.
POWER LEVEL - 70E.
C AUSE - FLOAT ASSEMDLY LEAKED.
DURING TESTING. 1 OF THE 4 SCRAM DUMP TANK LEVE L SWITCHES, LS-264 FAILED T O OPERA TE A S REQUIRED.
THE FLOAT ASSEMHLY HAD LEAKED, g
MAKING THE SWITCH INOPERABLE.
BEC AUSE REPLACEMENT P ARTS ARE NOT CURRENTLY AVAILASLE. THE TRANSMITTER SE C T ION OF LS-264 WAS TEMPORARILY REwlRED 10 THE FLOAT A SSE MBLY IN LS-259.
REPL ACEMENT P ARTS ARE ON ORDER AND WILL OE INS T ALLED AS SUON AS PRACTICABLE.
THE SWITCHES ARE MAGNETROL, MODEL NO. 758-X, RATED p
AT 10 AMPS AT 825 VDC DESIGNED FOR 3400 PSIG AT JOO F.
}
CDMPONE N T CODE INSTRU-INSTRUMENTATION AND CONTROLS SYSTEM CODE IA-REACTOR TRIP SYSTEMS KEYWORDS FAILUREiHEACTOR, BWR3DRESDEN I ( Hw R ) i E NS TRUMEN T, SWITCHilNSTRUMENT CALIDRATIONISENSORS. LEVELIFAILURE.
p INSTRUMENTETEST. SYSTEM OPERAUILITYiFAILURE, INHERENiiREACTOR PROTECTION SYSTEM
}
27/6/0000003-0000206//
87 ACCESSION NO.
0020824169 O'
TITLE CRD HYDRAULIC CONTROL UNIT WATER LEVEL SWITCHES FAIL TO RESPOND AT ARNOLD k}
CORPAUTH IOWA ELECTRIC LIGHT G POWER CO.,
CEDAR RAPIOSe IA DATE 1977 TYPE O
Q ME MO 2 PGS. LTR w/LER 77-26 10 NRC OFFICE OF I G E. REGION III, APRIL 58, 1977. DOCKET 50-33I. T YPE -O w R.
,}
MF G-G.E.. AE--ULCHIEL O
O O
9 27/6/0000005-0000206//
87 CONTINUATIUN I PAGE 38 Q
AVAIL AVAILABILITY - NRC PUBLIC DOCUMENT ROOM. 3717 H STREET. WASHINGTON. D.
C.
20S45 108 CENTS /PAGE -
g MINIMUM CHARGE S2.OO)
CATEGORY 1700003090000 EDITION 0072
,Q CORP CODE BGN g
COUNTRY A
AH ST R ACT OATE OF EVENT - 040577.
POWER LEVEL - OX.
CAUSt; - DURING PREVENTIVE MAINTENANCE WITH THE REACTOR IN REFUELING OUTAGE. 33 CONTROL kOD DRIVE HYDRAULIC CONTROL UNIT WATER LEVEL SW I T CHE S wOULD NO T RESPOND TO WATER LEVEL INCREASES.
THE SWITCHES WERE REPL ACED IN KINO.
THE CAUSE OF F AILURE IS UNKNOw N.
THE ps J( Q INVEstlGATION IS CONTINUING.
GFIHMRINMLIMPfMIFWMWECW MfYR
~
MF G--G.E.. AE--e E CHI EL
//
O
/
O cy 27/6/0000005-0000206//
87 CONTINUAflDN I PAGE 38
()
AVAIL AVAILABILITY - NRC PUBL IC DOCUMENT RDOM. 1717 H STREET. WASHINGTON. D.
C.
20S45 408 CENTS /PAGE --
()
$2.00)
CATEGORY 1700003090000 EDITION 0072
(}
CORP CODE DGN
(}
C DUN T R Y A
AU ST R ACT DATE OF EVENT - 040577.
POWER LEVEL - 02.
CAUSE - DURING PREVENTIVE MAINTENANCE WITH THE REACIDR IN REFUELING UUTAGE. 83 CONTROL ROD DRIVE HYDRAULIC CONTROL UNIT WATER LEVEL SW I T CHES W OULD NOT RESPOND TO I' (}
WATER LE%EL INCH E A SE S.
THE SWI T CHES WERE REPL ACED IN KINO.
THE CAUSE OF F AILURE IS UNKNDWN.
THE
.}
INVESTIGATION IS CONTINUING.
I!
COMPONEN T CODE CK Y URK -C IRCu l f C LOSE RS /I NT E RR UP T E R S SYSTEM CODE RU-REACTIVITY ODNTROL SYSTEMS
(}
KEYWDRDS FAILuktiREACIOR. UWR E ARNULD ( B WR ) 8 I NST R UMEN T. SWI1CH8 SENSORS. LEVEL 3 CONTROL RDD DRIVES 3 HYDRAULIC SYSTEMS
()
WATER 5 TEST. SY ST E M OPER AD I L I T Y 3 F A I LURE. INSTRUMENT IF AILDRE. I NHERENT 8 REFUELING 27/6/0000005-0000206//
88
(}
ACCESSION NO.
00Z0323794 i)
TITLE SET POINI DRIFT IN A PR M R OO OLOCK 1 RIP POINTS AT DRESDEN 3 CORPAUTH COMMONWE ALTH EDISDN CO.. MORh85. IL DATE 1977
(}
TYPE O
e}
MEMO 2 PGS. LIR W /RO S0-2 49/19770-S TO NRC DIRECTORATE OF REGULATDRY OPERATEDNS. REGIDN III. MARCH 22. 1977.
DOCKET S0-249. TYPE--UWR. MF G--G. E. AE --S G T C LUNDY AVAIL AVAILABILITY - NRC PUBLIC DOCUMENT RDOM. 1717 H STREET. WASHINGTON. D. C.
20S45 808 CENTS /PAGE --
(}
CATEGORY 1700005090000 EDITION 0072 CORP CODE DRS
(}
COUNTRY A
r}
ADSTRACT DATE OF EVENT - 022077.
POWER LEVEL - 02.
CAUSE - ELECTRONIC DRIFT.
DUR ING ROUT INE STARTUP DPERATIDN s
CHECKS, APRM'S 3 AND 6 W ER E FOUND WITH ROD HUDCK TRIP POINTS OF I2.S4 AND 13.2X. RESPECTIVELY.
TECH l
SPEC LIMIT IS LESS THAN UR EQUAL 70 12% PO WE R.
THE LVENT WAS ATTRIBUTED TO ELECTRONIC DRIFT.
THE GE.
(}
TYPE GE 33604389GI. TRIP HEFERENCE CAR D S F OR BO T H APRM*S WERE AOJUST E D TO PROVIDE THE CORRECT TRIP J)
POINT PRIOR TO POWER OPE R A T I ON.
COM PONE N T CODE INSTRU-INSTRUMENIAftDN AND CDNTROLS SYSTEM CODE IA-REACTOR TRIP SYSTEMS
{.
K E Y WOR DS FAILURE 3kEACTOR. OWR EDRESDEN 3 I BWR ) 3 I NS TRUMEN T. SWITCHIINSTRUMENT C AL I BR A T I ON I I NS TRUMEN T. POWER RANGEi
]
TEST. SYSTEM OPER Aul LIT Y 8F A ILURE. INSVHumENiiREACIDR PRO T E C T I DN SYSTEMISET POI NT IDR IF T IF A ILURE.
i INHERENT 8 CONTROL SYSTEM 8DRESDEN 3 (BWR)
{
27/6/0000001-0000206//
89
.)
ACCESSION NO.
0020123039 T I T LE SE T POINT DRIFT IN IRM AT DRESDEN 2 CORPAUTH COMMONWE ALTH ED I SON CO.. MORRIS. IL
, (:
DATE 1977
)
TYPE O
MEMO 3 PGS. LIR W/RO SO-237/B977-7 TO NRC DIRECTORATE OF REGULATORY OPERATIONS. REGION III. MARCH 24 1977.
DOCKET S0-237. TYPE--HWR.
MFG--G.E..
AE--SGI C LUNOY
()
AVAIL AVAILABILITY - NRC PUBLIC DOCU ME N T RDDM. 1787 H STREET. WASHINGTON.
D.
C.
20545 (OS CENTS /PAGE --
,)
MINIMUM CHAR GE $2 003 CATEGORY 1700005090000 EDITION 0072
()
CORP CODE ORS
()
COUNTRY A
ADSTRACT DATE OF EVENT - 022377.
PO WE R LEVEL - 934.
C AUSE - INSTRUMENT DRIFT.
DURING SUR VE I LLANCE TESTING.
IRM 16 W AS F OUND TO TRIP AT 122E OF SC ALE AND ITS RDD DLOCK SET POINT WAS FOUND AT 118%.
TECH SPEC
()
LIMITS ARE 820% AND 1084 RESTECT ivELY.
THE EVENT WAS AliRIBUTED TO INSTRUMENT DRIFT.
SET POINTS WERE
()
V AD JUS T ED TO THE CORR ECT SE T T I NGS.
I)
(I
()
() l 27/6/0000001-0000206//
89 CONTINUATION I
PAGE 39
()
COMPONENT CODE INSTRU-INSTRUMENTATEDN AND CONTROLS
() l SYSTEM CODE IA-REACIDR TRIP SYSTEMS KEYWORDS FAILURE 8HEACTOR. SWR 3DRESDEN 2 IBWR)tINSTRUMENT. SWITCH 5 INSTRUMENT CALIHRATIDN3 INSTRUMENT. INTERMEDIATE RANGE 3 TEST. SYSTEM OPER AS I LI T Y iF A I LURE. INSTRUMENitSET POINT 80 RIFT 8 FAILURE. INHERENTIREACTOR PROTECTION
()
SYSTEM Q) 27/6/0000005-0000206//
90 i
ACCESSIDM NO.
0020123038 J ()
TITLE APRM TEST INTERVAL EXCEEDS LIMIT AT HATCH I
() '
J CORPAUTH GEONGI A POWLR CO..
H ARLEY. GA
- \\
DM 0977
u.-...
---.... ~
am..--...
7 gf ADJUSTED TO INE CORMECT SE T T I NGS.
i 6
1
()
)
I
('
f) 27/6/O000005-0000206//
89 CONTINUATION I
PAGE 39 COMPONENT CODE INSTRU-INSTRUMENTATEDN AND CONTROLS f)
(N
- SYSTEM CODE IA-REACIDM TRIP SYSTEMS KEVsORDS FAILUREIREACTOR. O wR &DRE SDEN 2 (BWRiiRNSTRUMENT. SW I TCH 8 INSTRUMENT CALIDRATION8 INSTRUMENT. INTERMEDIATE RANGE 8 TEST. SYSTEM OPERABILITYiFAILURF., INSTRUMENT 8 SET POINT 8DRIFTIFAILURE. INHERENT 8 REACTOR PROTECTIDM (5
SYSTEM
/)
27/6/0000003-0000206//
90 ACCESSIDN NO.
0020123038 (y
TITLE APRM 1EST INTERVAL ERCEEDS LIMIT AT HATCH 8
()
CORPAUTH GEORGIA POWLR CO..
DAXLEve GA l
DAfE 8977 TYPE O
(}
MEMO 2 PGS. LiR w/RO 50-32 3 / 8 97 7-16 TO NRC OIRECTOR ATE OF RE GUL AT DR Y DPER A T I ONS. REGION II. M ARCH 23, 1977.
()
DOCKET 50-321. T YPE --UwR. M F G--G.E.. A E --SS I l
AVAIL AV A I LA BI LI T Y - NRC PUBLIC DOCUMENT RDOMe 1787 H STREEi. w ~; H E NG T ON. D.
C.
20S45 (08 CEN T S /P AGE --
MINIMUM LHA R GE S2.00)
(}
CATEGORY 1700003090000
}
EDITION 0072 CORP CODE GPC COUNTRY A
(N ABSTR ACT DATE OF EVENT - 021977.
POWER LEVEL - 32.
C A US E - PERSONNEL ERROR.
ON 2/19/77 wlTH THE REACTOR IN
-}
HOT-STANDuY AT Is PowtR. IT WAS DISCOVERED THA1 APRM TEST AND CALIBRATION HAD NOT BEEN PERF OR MED W I T HI N THE ALLOWED TIME.
T HE D UE DATE WAS 2/17/77 4/- I DAY.
THL CAUSE W AS PERSONNEL ERROR.
T HE TEST WAS a
PERFORMED AS SUON AS THE ERRDR WAS DI S COVE R E D.
(}
COMPONENT CODE INS IRU-INS T RUMEN T A T I ON AND CONTROLS r")
SYSTEM CODE IA-REACTOR TRIP SYSTEMS KEYWORDS FAILURE &REAC10R. HwREHATCH I (HwRl5 TEST IN T ERV AL 41NST RU MEN T. SwlTCHilNSTRUMENT CALEBRATIONITESTING8 FAILURE. OPERATOR ERROR 8REAC10R PR O T EC T I ON SYSTEMilNSTRUMENT. POWER RANGE 27/6/0000001-0000206//
91 ACCESSION NO.
0020l20529 T I T LE SET POINT DR IF T IN I N-CORE NEUTRON FLUX AMPLIFIER AT DRESDEN 1
(}
CORPAUTH COMMONwE ALTH EDI SON CO., MORRIS, IL
<}
DATE 8976 IYPE O
MEMO 2 PGS. LIR w/RO S0-010/1976-18 TO NRC DIRECTOR ATE OF REGULAIDRY OPERATIONS. REGION III, DEC. 35. 1976.
(}
DOCKET 50-010. TYPE--HwR. MF G--G. E.. A E --OE CH T EL
')
AVAIL AVAILABILITY - NRC PUOLIC DOCUMENT RDUM. 3787 H STREET, WASHINGTON.
D.
C.
20545 (08 CENTS /PAGE --
CATEGORY 1700005090000
(}
E D I T I ON 0070
,)
CORP CODE DR S COUNTRY A
4 AUSTRACT CAUSE - I NS T RUMEN T DRIFT.
DURING SURV E I LL A NCE TEST ING WHILE OPER AT ING AT 48% POWER, I N-CORE NEUTRON I
(y' FLUM MONITOR 303C w A S F DUND TO TRIP AT 1355 POWER ITECH SPEC LIMIT IS 1252 POWERI.
THE C AUSE W AS
)
INSTRUMENT DRIFI.
T HE GE. PART NO. 693CS78. AMPLIFIER WAS ADJUSTED TO THE PRO PE R SET POINT.
K E YWOR DS REACTOR. OwH 8F AILURE ilNSTRUMENT. Sw llCHi lN STRU ME N T CALIDRATIDN81NSTRUMENT. IN CORE E MDN I T DR INEUiR ON ISE T POINi t DRIF T E RE AC IOR PROTECTION SYSTEM 51EST, SY ST EM OPERAB ILl iV 8 F A I LURE. I N ST RUME N T IF A I LURE, INHERENT 8 (j
DRESDEN 1 (DwR)
N 27/6/0000001-0000206//
92 ACCESSION NO.
0020119720 Q
TITLE SET POINI DR IF T IN REACTOR WATER LEVEL SWITCH AT NINE MILE POINT I i i CORPAUTH NIAGARA MOHAWK P0wER CORP.. SYRACUSE. NY l
DATE 1976 TYPE O
()
MEMO 2 PGS, LTR w/LER 76-36 TO NRC UIRECTORATE OF REGULATORY DPERATIDNS. REGION I.
NOV.
S.
1976. DDCKE T
()
50-220. TYPE--UwR.
MFG--G.E..
AE--NIAGARA MOHAWK
()
1
()
1D 27/6/0000005-0000206//
92 CONTINUATION I PAGE 40
()
AVAIL AV AIL Au lLI TY - NRC PUBLIC DOCUMENT ROOM. 1717 H STREET, WASHINGTON, D.
C.
20545 (08 CENTS /PAGE --
CATEGORY 1700005090000 EDITION 0070 Q
CORP CODE NNP Q
COUNTRY A
AOSTRACT CAUSE - I NS T RU ME N T DRIFT.
DURING SURVE R EL ANCE TESTING wliH THE REACTOR AT 954 POWER. LO-LDHLD RE A CTOR WATER LEVEL SWITCH RE-18A FAILED TO PROVIDE A IRIP AT THE REQUIRED I24+2.
-2.6 INDICATED I NCH E S.
IT m-()
TRIPPED AT 118 INCHES ANO W AS RE SE T AT 826 I NCHE S.
T HE APPARENT CAUSE WAS INSTRUMENT DMIFT.
()
KEYWORDS NINE MILE PO IN T a towRl8 REACTOR. HwR iF A ILURE 8 8 NS T RUMENT. S WI TCH 8 INST RUMENT CAL IUR A T I ON I SEN SORS. LE VEL t IEST. SYSTEM UPERADILITY8 FAILURE. I NS T R UME Ni t SE T POINT 3 DRIFT 8FABLURE. INHLRENT8 REACTOR PRO TEC T I ON
.a
L--
u- -.,
_.-,n g
esa.nu e,
rua. La
. s a.s.n e u-ao s u een% wan%%.wnnew v.
.m.
55-220. I YPE -BW A e C' F G-lee o AE-N I AGARA MOHAL i
(
- s 1
O 9
l n
c 27/6/0000005-0000206//
92 CONTINUATION I PAGE 40 j
Q AVAll AVAILABILITY - NRC PUOLIC DOCUMENT HOOM. 3787 H SIREET. WASHINGTON. D.
C.
20545 (08 CENTS /PAGE -
Q I
MINIMU*4 CHANGE 52.005 CATEGORY 1700008090000 EDITION 0070 Q
CORP CODE NMP
- )
COUNTRY A
At1STR ACT CAUSE - I NSildu MEN T DHIFT.
DUHING SOHVE ILL ANCE TESTING WITH THE REACTOR AT 95% POWER. LO-LO-LO RE ACTOR WATEH LCVEL SWITCH RE-18A FAILED TO PHOVIDE A TRIP AT THE REOUIRED 124+2.
-2.6 INDICATED INOfES.
IT Q
TRIPPED AT 888 INCHES AND W A S RE SE T AT 126 INCHES.
IFE APPARENT CAUSE WAS INSTRUMENT DRIFT.
Q KEYWUNDS NINC MILE PO IN T & (UWRl8 REACTOR. B W54 ;F A ILURE ; I NS T RUME.N T. S W I T CH i lN S T RUM E NT CAllBR A T I ON E SEN SORS. LEVEL 3 I l IESI. SYSTEM OPEHADILiiv& FAILURE. INSTHUMENitSET POI Ni iDRI F T 8 F A I LURE. IN8E. RENT 8 REACTOR PROTECTION j
SYSTEM
' O O
27/6/0000003-0000206//
93 ACCESSION NO.
0020819475 IITEE CORE FLOW UIAS 10 THE A LOGIC APRM SiHING HIGH AT PEACH DOTTOM 3 Q
CORPAUTH PHILADELPHIA E LE CTR I C CO..
PHILADELPHIA. PA Ql DATE 1976 TYPE O
MEMO I PG. LER 50-278-3-76-69/3L TO U.S. NRC. NOV.
2.
1976. DOCKET 50-278e T YPE --e W R, MF G--G. E.. A E-BE CH T EL Q
AVAIL AVAILABILITY - N R C PUBLI C D OCOstEN T ROOM. 1787 H STREET. WASHINGTON. D.
C.
20545 (OS CENTS /PAGE -
]
MINIMUM CHARGE S2.00)
CATEGORY 1700003090000 EDITION 0069 Q
CORP CODE PEC Q
COUNTRY A
ABSTRACT CAUSE - AUSENCE OF OFFSET SIGNAL.
DURING 942 POWER. THE C ORE FLOW BIAS INPUT TO THE A LOGIC APRM STRING W A S F OU ND TD DE 42 HIGH.
THL C AUSE WAS ABSENCE OF AN OFF SE T S IGNAL IN THE GE FLOW BIAS Q
PROPORTIONAL AMPLIFIER.
A FLOW BRAS ALARM GAVE INDICATION OF THE FAILURE.
WHEN THE AMPL IF L E ER WAS
]
REMOVED FROM SERVICE. THE SIGNAL NORMALIZED.
THE AMPLIFIER W AS RE TURNE D TO SERVICE.
KEYWORDS RE AC T OR. BWR IF A ILURE IRE AC TOR PROIECTION SYhiEM8 FAILURE. INSTRUMENT 35NSTRLMENT. SWITCHilNSTRUMENT. POWER HANGEiPEACH DOTTOM 3 (BWR)5 FAILURE. INHERENT 8 ELECTRONIC FUNCTION UNITS 27/6/0000005-0000206//
94 ACCESSION NO.
0020189474 TITLE SET POINT OR IF I IN APRM ROD BLOCK SEitING Al PEACH B05104 3 Q
CORPAUTH PHILADELPHIA ELEC1HI C CO..
PHILADELPHIA. PA Q
DATE 1976 TYPE O
MEMO I PG. LER 50-2 70 76-68/3L TO U.S. NRC. NOV. 2.
3976. DOCKET 50-270. T YPE --HW R. M F G--G.E.. AE--GECHTEL Q
AVAIL AVABLAHILifY - NHC PUBLIC DOCUMENT ROOM. 1787 H STREET. WASHINGTON.
D.
C.
20545 (OO CENTS /PAGE -
.; }
MINRMUM CHARGE S2 003 CATEGORY 1700003090000 EDITION 0069 Q
CORP CODE PEC
,)
COUNTRY A
AU STR ACT CAUSE - INST RUMEN T DRIFT.
DURING IESTING WITH THE REACTOR AT 69% POWER. THE HOD BLOCK SETTING ON APRM B WAS FOUND TO BE SOE HIGHER THAN TECH SPEC HEQUlHEMENT.
THE CAUSE WAS A SLIGHT DRIF T ON THE GE APRM Q
ELECTRONIC IRIP UNIT.
THE TRIP CARD W AS IMMEDIATELY RECAllBRATED AND TESTED.
Q' KEYWORDS REACTOR. UWR 8F AILUHE 3RE ALTON PROTECTRON SYSTEM 5 INSTRUMENT CALIBH4TRONIFAILUHE. INSTRUMENT 3 INSTRUMENT.
Switch 8fEST. SYSTEM OPER AG lLI T Y iSE T POINitPEACH HOITOM 3 (BWR l 8DRIFf 8F A ILURE. INHERENTIINSTRUMENTS.
Mt50.
27/6/0000005-0000206//
95 ACCESSION NO.
00Z011933I TITLE SET POINI DRIFT IN NUCLEAR INSTRUMENT AT LA CROSSE Q
CORPAUTH DAIRYLAND POWER COOP., LA CROSSE. WI g
DATE 3976 O
G 0
0 27/6/0000001-0000206//
95 CONTINUATION I PAGE 41 Q
TYPE O
Q MEMO 5 PGS. LIR W/HO 76-30 TO NHC DINECTOHATE OF HEGULATORY OPERATIONS. REGION III, OCT. 29. 1976. DOCKET 50-409 1 YPE-U w H. MFG-AC. AE-SGI E LUNDY AVAIL AVAILABILITY - NHC feUBLIC DOCUMENT ROOM. 1717 H STREET. WASHINGTON. D.
C.
20545
( 08 CENTS /PAGE -
Q MINIMUM CHARGE S2 003 Q
CATEGORY 1700008090000 EDITION 0069 CORP CODE AYS
. Q COUNTRY A
Q ABSTR ACT CAUSE - SHIFI IN HIAS.
DU541NG A REACTOH SO4 AM. IT WAS NOTED THAT NUCLEAN I NS T T. JMEN T CHANNEL 5 DID NOT F UNg I ONyOP, EHLY. _lWE S T IG A_y uN FOUND y A M el SCH SL POINigDMED DLTD,A SHIFT IN THE BIAS
cua. av e e.
unaaeca,
ro.
-.. La ca.~,...
y D, ATE 19Fb
~
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C?
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27/6/0000005-0000206//
95 CONTINUATION I PAGE 41
(} -
MEMO 5 PGS. LIR W /R O 76-10 TO NRC DIRECTORATE OF REGULATORY OPE R AT E DNS. REGIDN TII. OCT. 29. 1976. DOCKET TYPE O
()
50-409 T Y PE --Uw R. MFG--AC.
AE --SG T & LUNDY AVAIL AVAILABILITY - NRC PUBLIC DOCUME N T RDUM. 3717 H S T RE E T. WASHINGTON. D. C.
20545 IOS CENTS /PAGE --
(}
MINIMUM CHAR GE S2.OO)
()
CATEGDdY 1700003090000 EDITION 0069 C DA P CODE AYS
(}
COUNTRY A
()
AUSTRACT CAUSE - SHIFT IN HIAS.
DURING A REACTOR S CR A M. IT WAS NOTED TH AT NUCLE AR INSTRUMENT CHANNEL $ DID NOT l
FUNCTION PRDPERLY.
INVE ST IG A T ION F OUND THAT THE SCRAM SET POINT HAD DR IFTED DUE TO A SHIFT IN THE BIAS IN THE OSCILLATOR CIRCUIT.
THE CIRCUIT WAC AD JUST ED AND SATISFACTORILY TE ST ED. THIS IS THE FIRST
(}
OBSERVED OCCURklNCE DF A SHIFT IN FACTORY ADJUSTED SIAS IN ABOUT ll YEARS OF SERVICE.
()
KEYWORDS REACTOR. UwR;FAILURF8HEACTUR PROTECTION SYSTE M IF AILURE. IN$T RUMEN T 3 INS T RUME NT. SWITCHERELIABILITY.
COMPONENT 8 LACROSSE I BwR ) 3 I NSTRUMENT, POWER R AN GE ISE T PQlNT8DRIFTIFAILURE. INHE RE N T
()
27/6/0000005-0000206//
96
.)
ACCESSION NO.
0020139328 TITLE SET POINT DRIFT IN REACTOR LOW WATER LEVEL SWITCH AT BRUNSWICK 2 CORPAUTH CAROLINA POWER L LIGHT CO..
RALEIGH. NC
(}
DATE 1976 6")
TYPE O
MEMO 2 PGS. LTR W/LER 76-550 TO U.S.
MRC. REGION II. OCT. 26. 3976 DDCKEY 50-324. TYPE--BWR.
MFG--G.E.,
A E --UE C C
(}
AVAIL AV A I LA DI LI T Y - NRC P UBL I C D OCUMEN T RUOM. 1787 H STREET. WASHINGTON. D.
C.
20$45 (OS CENTS /PAGE --
s}
CATEGORY IF00003090000 EDITION 0069 p
CORP CODE AHV G
COUNTRY A
AUSTR ACT CAUSE - UNKNOWN.
WITH THE REACTOR AI 924 POWER AND DURING REACTOR LOW WATER LEVEL TE ST ING. LEVEL SWITCH H28-LIS-N017D WAS FOUNO TO HAVE A HIGH SE T PO IN T.
THE CAUSE IS UPeCNOWN.
THE SWITCH WAS
(}
RECALIBRATED.
gg KEYWDRDS R E AC T OR. D uR IF AILURE IRE ACI DH PROTECTION SYSTEM 8 t NSTRUMENT C AL I D R A T I ON 3 F A IL URE. INS TRUMENT $ INS TRUMENT.
SWITCH;IEST. SYSTEM OPERABILITY 5 SET POINT 8 BRUNSWICK 2 IBWR ) 3 DR IF T 3 F AILURE. I NN ER EN T I SE NSOR S.
LEVEL
(}
27/6/0000005-0000206//
97
- )
ACCESSION NO.
0020589323 TITLE SET POINT DRIFT IN REACTOR WATER LEVEL SWI TCHES AT HA TCH I CORPAUTH GEORGIA POuER CD.. B AXLE Y.
GA
(}
DATE 1976
[g TYPE O
MEMO 2 PGS. LTR W /RO 50-321/1976-78 TO NRC DIRECTDR ATE OF REGULATORY OPERATIONS. REGION II. OCT.
5.
1976.
DOCKEI 50-328. TYPE--BWR, MF Gm-G.E.. A C --SS I
()
AVAIL AV AILADILI T Y - NRC PUHLIC DOCUMENI ROUM. 1787 H STREET. WASHINGTON. D.
C.
20545 508 CENTS /PAGE --
gg MINIMUM CHAR GE S2.OO)
CATEGORY 3700008090000 EDITION 0069
()
CORP CODE GPC
{g COUNTRY A
A85 TRACT CAUSE - NO M AL FUNC T I ON FOUND.
WHILE TESTING T HE REACTOR WATER LEVEL SWITCHES WITH THE UNIT AT 91X POWER. LEVE L SWI TCHE S D2 3 -N024 A OPER AT ED A T -50 INCHES.
TECH SPEC LI MI T IS -38 INCHES.
NO MALFUNCTIDN
(}
WAS FOUND IN T HE SWITCH.
IT WAS RECALIBRATED AND PUT IN SERVICE.
()
KEYWORDS REACTUR. OWR 5F AILURt 8RE ACTOR PROTECTION SYS T E M i lNS TRU MEN T CALIBR A T IDN IF AILURE. I NS T RUMEN T 3 INSTRUMENT,
SWITCH 8 TEST. SYSTEM OPER Att I L I T Y 3 5E T POINTiHATCH & I BWR )i DR IFT 3F A ILURE. INHERENT 8 SENSORS. LE VEL
()
c) c>
()
1D 27/6/0000005-0000206//
98 PAGE 42
(}
ACCESSION NO.
0020118259 gg TITLE SET POINI DRIFT IN APRM AT FIT 2 PATRICK CORPAUTH NIAGARA MOHAWK POWER CORP., SVRACUSE. NY DATE 8976
(}
TYPE O
gg MEMO 2 PGS. LTR W/LER 76-58 TO NRC DIRECTDRATE OF LICENSING. SE PT. 24 1976. DOCKET 50-333. TY PE --BWR.
MFG--G.E..
AE--STONE & WEBSTER AVAll AVAILABILITY - NHC PUBLIC DOCUMENT RDOM. 1787 H STREET. WASHINGTON. D.
C.
20$45 (08 CENTS /PAGE --
() l
()
$2 00)
CATEGORY 1700005090000 (APQ T S_pD __
6069 f
a
\\
h h
D 27/6/0000003-0000206//
98 PAGE 42 l' Q ACCESSION NO.
0020518259 a)
TITLE SET POINT DRIFT IN APRM AT F I TZP AT R ICK
'j CORPAUTH NSAGARA MUHAwK PDsER CORP., SYRACUSE. NY DATE 1976 a
Q TYPE O
/}
ME MO 2 PGS. LTR W/LER 76-58 TO NRC DIRECTORATE OF LICENSING. SE PT. 24 1976 DOCKE T 50-333. T Y PE --owr.
MF G-G.E.. AE--STONE G WERSTER AVAIL AVAILABILITY - NRC PUBLIC DOCUMENT RODN. 1787 H STREET. WASHINGTON. D. C.
20545 IOS CENTS /PAGE -
Q MINIMUM CHARGE S2.00)
- )
CATEGORY 1700003090000
/
EDITION 0069 CORP CODE NMP Q
COUNTRY A
g ABSTRACT CAUSE - INSTRUMENT DEIFT.
DUNING SURVEILLANCE TESTING. APRM A DID NOT GO TO THE INOPERATIVE MODE. AS J
REQUIRED. WITH II OR LESS LPRM INPU15.
APRM. MODEL NO. 145C3096AABl. IMOP SIGNAL HAS BEEN INCRE A SED TO 12 INPUTS.
THIS SHOULD PREVENT RECURRENCE.
THE REACTOR WAS OPERATING AT 95E PO WER.
4} (
Q KEYWORDS.
REACTOR. UwR 8F AILURL 8RE ACTOR PROTECTION SY STEM 8F I TZP A TRI CK ( owr I 5 I NS TRUMEN T CALIBRATIONIFAILURE.
INSTRUMENT $ INSTRUMENT. SWITCHITEST. SYSTEM OPERABILliV8 INSTRUMENT. POWER MANGE 8 SET POINT 8 DRIFT 8 FAILURE.
I NHE R E N T
]
I Q
27/6/0000001-0000206//
99
,} i ACCESSION NO.
0020888288 TInLE SET POINT DRIFT IN APRM AT PEACH BOTTOM 2
.t CORPAUTH PHILADELPHIA ELE CT R I C CO.. PA I Q DATE 1976
()
,j TYPE O
MEMO I PG. LER 50-2 77-2-76-65 /3L TO U.S. NRC. SEPT. 28. 19 T6. DOCKET 50-277. TYPE--BWR.
MFG--G.E.,
A E-UE CH T E L Q
AVAIL AVAILABILITY - NRC PUBLIC DOCUMENT ROOM. 1717 H STREET, WASHINGTON. D.
C.
20545 IOS CENTS /PAGE -
gj MINIMUM CHARGE S2.00)
CATEGORY I700003090000 EDITION 0069 Q
CORP CCDE PEC g
COUNTRY A
ABSTRACT CAUSE - INSTRUMENT DRIFT.
WHILE OPERATING AT 551 POWER. APRM A TRIP POINTS WERE FOUND TO BE LESS CONSE RV A T IVE THAN TECH SPEC REOUIRE.
THE APPAkENT C AUSE W AS INSTRUMENT OR IFT.
THE I N ST RUMEN T WAS Q
]
KEYWORDS REACTOR. owr tF AILURE 3 REACT OR PROTECTION SYST EM 8 I NSTRUMEN T C ALIBR AT ION 3F AILURE. INSTRUMENT 3 INSTRUMENT.
SulTCH83NSTRUMENT. POwtR RANGE 4 PEACH OOTTOM 2 IBWRl8SLT POINT 8 DRIFT;FAILLS4E. INHERENT Q
27/6/0000001-0000206//
100 4)
ACCESSION NO.
0020118366 TITLE SE T POINT ORIFT IN RE ACTOR WATER LEVE L INSTRUMENT AT ORESDEN 2 CORPAUTH COMMONWEALTH EDISON CO.. MORRIS. IL Q
DATE 8976 Q
TYPE O
MEMO 3 PGS. LTR W /RO 50-237/1976-57 TO NRC DIRECTOR ATE OF REGULATORY OPERATICMS. REGION III. SEPT. 20. 39F6.
DOCKEI 50-23F. TYPE--BWR. MF G-G. E.. AE--SGT & LUNDY Q
AVAIL AVAILAHILITY - NRC PUULIC DOCUMENT ROOM. 1717 H STREEI. WASHINGTON. D.
C.
20545 508 CENTS /PAGE -
Q MINIMUM CHARGE S2.00)
CATEGORY 1700003090000 E DI TI UN 0069 G
CORP CODE DRS Q
COUNTRY A
{
A85 TRACT CAUSE - INSTRUMENT DRIF T. DURING TESTING OF THE HEACIOR WATER LEVEL INSTR UMEN T S WHILE THE UNIT WAS SHUT DOWN. THE TRIP POINT FOR ISOLATION FOR I SWITCH W AS F OUND AT 885.6 INCHES WATER DP.
THIS EXCEEDS Q
THE II4.J INCH LIMIT.
FAILURE WAS DUE 10 INSTRUMENT DRIFT.
THE YARWAY CORP.. MODEL 4488C. LEVEL g
l SENSUR WAS ADJUSTED TO WITHIN THE STATION SET POINI B ANO WHICH H AS PROVED EFFECTIVE IN PREVENilNG SET O
G O
O 27/6/000000B-0000206//
200 CONTINUATION I PAGE 43 Q
POINT VIOLATIONS.
g KE YWORD S REACTOR. Heu tF AILURE 8RE ACION PROTECTION SY ST EM 8 I NST RUMEN T C AL I DR A T I ON 8 F A ILURE. INSTRUMENTtDRESDEN 2 I UWR ) $ INSTRUME N T. SWITCH 8 TEST. SYSTEM OPERABILITY 4hET POINilDRIFT8 FAILURE. I NHEREN T I SE NSORS. LEVEL Q
27/6/0000005-0000206//
101 g
CCCESSIDN NO.
0020817770 ilTLE SET POINT DRIFT IN SOURCE R ANGE MONITOR AT ARNOLD CORPAUTH IDWA ELECTRBC LIGHT & POWER CO.,
Q MATC 19F6 Q
TYPE O
____ _____ZD G CNR_hRW_@_.10-EO WD C"RE 090Ga D 0 G Go R360 C 0000 AtDG. 300 IQ76 o DOCKE T.50-331 p _ TYPE --ewR._
g
(.
em sa..
anu. u e. eAim
.o
.o
................ _.... _ _ _ _IN PREVENTING SET SENSUR UAS ADJUS TE D TO UITHIN THE STATION SET POINT CAND LHICH HAS PROVED EFFECT &VE
(
)
I
!(?
')
27/6/0000005-0000206//
100 CONTINUATIDN 1 P A GE 43
(}
POINT VIDLATIONS.
f)
KLYwORDS REACTOR. HwH 3F AILURE 3RE ACT OR PROTECTION SYST EMi!NSTRUMENT CALIBRATIONtF AILURE. I NS T RUMEN T t DH ESDEN 2 I U wR )i tNSTHUMEN T. SW I TCH; T E ST. SYSTEM OPER ASIL I T Y3 bE T PO IN T 4 DR I F T IF A I LURE. INHERENTISENSORS. LEVEL
(}
27/6/0000005-0000206//
101
/)
ACCESSION NO.
002088FF70 TITLE SET POINT DRIFT IN SOURCE R ANGE MONITOR AT ARNDLD CORPAUTH IOWA E LE C T R I C LIGHT & POWER CO.. CEDAR RAPID. IA
(}
DATE 1976
{}
TYPE O
MEMO 2 PGS. LTR w/LER 76-53 TO NRC DFFICE OF 1 & E.
REGION lit. AUG. 30. 3976. DOCKET 50-333. TYPE --O wR.
M F G-G.L., AL--BECHTEL
()
AVAIL AVAILAUILITY - NRC PUBLIC DOCUMENT ROON. 1717 H STREET. WASHINGTON. D. C.
20545 (08 CENTS /PAGE --
f)
$2 00)
CATEGORY 3700003090000 EDITION 0068 Q
COHP ([D E OGN
.}
COUNTRY A
ADSTR ACT CAUSE - INSTRUMENT DRIFT.
DURING TESTING WHILE THE UNIT WAS SHU TD OWN. SOURCE RANGE MONITOR D UPSCALE ROD ULOCK TRIP OCCUHkED AT 573000 CPS.
IT SHOULO HAVE DCCURRED AT LESS THAN B00000 CPS.
THE APPARENT
()
CAUSE WAS INSTRUMLNT DHIFT. TRIP POINT WAS RECALIBRATED.
J}
KEYWORDS HEACTOR. BwREFAILURE REACTOR PROTECTION SYST EM 81NS TRUMEN T CALIDRAT IONIF AILURE. I NSTRUMENT 8 INS TRUMEN T.
SwlTCH5fEST. SYSTEM UPER AB I L I T Y i lN ST RUMEN T. STARTUP RANGE 8 SET POINT 3AHNOLD (HwR)lDRIFT8 FAILURE.
IN HC RE N T 2 F/6/0000001 -0000206 //
302 ACCESSION NO.
00Z0887679 TITLE SET POINT DR IF T IN INTERMEDI ATE RANGE MONITOR AT MILLSTONE 1 g}
CORPAU TH NOR T HE AS T NUCLEAR EN ERGY CO..
HARTFDRD. CT
() j i
DATE E9F6 TYPE O
l NEMO J PGS. LTR w/RO S0-245/76-31/3L TO NRC OFFICE OF I & E. REGION I.
SEPT.
9.
I976. DDCKET 50-245, i
()
T Y PE --owr.
MFG--G.E.,
AE--EDASCO gg,
AVAAL AVAILABILITY - NRC PUBLIC DOCUMENT RDOM. 17 8 7 H STREET. WASHINGTON. D.
C.
20545 808 CEN TS /PAGE --
MINIMUM CHARGE S2 00)
CATEGONY 3700005090000
()
E D I T ION 0068 gg CORP CODE AIG COUNTRY A
AOSTRACT CAUSE - I NST RUMEN T DRIFT.
DUR ING A CALIBRATION CHECK OF INTERMEDIATE RANGE MONITOR 14 FOLLOWING A
{}
PRE-AM PLI F I E R UNIT REPLACEMENT WHILE THE PLANT WAS IN A COLD SHUTDOWN CONDITION. SET POINT S F DR THE ROD
{g OLOCK AND SCRAM FUNC T E DNS WERL FOUND TO DE AHOUT FX HIGH.
FAILURE WAS ATTRIDUTABLE TO INST RUMEN T DRIFT.
THE MONITDR WAS RECALIBRATED.
KE Y WOR DS REACTOR. BwH IF AI LURE IRE ACT OR PROTECTION SYSTEMi!NSTRUMENT C AL IBR A T IDN 3F AILURE. I NS T R UMEN i i !NS T RUME N T.
()
SWITCHITEST. SYSTEM OPER AR 8 LI T Y 3 IN S TRUMENT. INTERMEDIATE RANGEISET POINT; MILLSTONE I (BWR)3 DRIFT
()
2T/6/0000001-0000206//
303 ACCESSION NO.
00Z0!!7085 l
()
TITLE SET POIN T DRIF T IN ADS TIMER AT ARNOLD (g
CORPAUTH IOWA LLECTRIC LIGHT & POWER CO., CEDAR RAPIDS. IA l
DATE 1976 TYPE O
()
MEMO 2 PGS. LTR w /R D 76-52 TO NRC DFFICE OF 1 & E. REGION Ill. AUG.
19, 3976. DOCKET 50-331. T YPC --Hw R.
()
MF G--G. E.. AE--HECHTEL AVAIL AVAILABILITY - NRC PUBLIC DOCUMENT Rnnut. 1787 H STREET. WASHINGTON. D.
C.
20545 808 CENTS /PAGE --
(}
CATEGORY 1700008090000
(}
EDITION 0068
()
()
C)
CD 27/6/0000001-0000206//
303 CONTINUATION I PAGE 44
(}
CDRP CODE B GN g
CDUNTRY A
A85 TRACT CAUSE - INS T RU MEN T DRIFT.
DURINr. TESTING WITH T HE REACTDR AT 64% POWER. AN ADS TIMER SETTING WAS FDUND TO DE 126.98 SECOND.
THE UPPER LIMIT IS I2S SECOMOS.
THE APPARENT CAUSE WAS INSTRUMENT DRIFT.
T HL
(}
()
KEYWORDS REACTOR. OwRIFAILUHEIREACTOR PHOTECTION SY ST EM 8 I NST RUMEN T CALIBRATION 8 FAILURE, I NS TRUMEN T 8 INSTRUMENT.
SWITCHiPRESSURE REL I LF S T LS T. SYSTEM DPERADILITYiSET POINT $ ARNOLD (DwR)3 DRIFT 3 RELAYS I ()
27/6/0000001-0000206//
304
()
0020815901 TITLE SET POINT DH IF T IN A PR M ' S AT NINE MILE POINT S
we-.
(,
EDIT 1DN CC60 h
9
. h 9
27/6/0000001-0000206//
103 CONTINUATION I PAGE 44 I
Q CORP CG)E RGN g
I COUNTRY A
h At9 5 T R A CT CAUSE - I NS T RUMEN T DRIFT.
DURING TESTING WITH THE REACTOR AT 642 POWER. AN ADS TIMER SETTING WAS FOUND i
TO BE 826.98 SECOND.
THE UPPER LIMIT IS 175 SECONDS.
THE APPARECT CAUSE WAS INSTRUMENT DRIFT.
THE Q
/)
I
- )
KEYWORDS REACTOR. OWR ;F AILURE IRE ACT OR PROTECTION SYSTEM $ INSTRUMENT CALIBRATIONIF AILURE. INSTRUMENT;1NSTRUMENT.
SWITCH 3 PRESSURE REL I EF 8 T t.S T. SYSTEM OPERASILITY3 SET POINT 3 ARNOLD (BWR)3 DRIFT 8 RELAYS Q
27/6/0000005-0000206//
104 g
A CCE SS IGN NO.
0020185908 TITLE SET POINT DRIFT IN APRM's AT HINE MILE POINT 1 CORPAUTH NIAGARA MOHAWK POWER CORP.. SYRACUSE. NY Q
DATE 19F6
- }
TYPE O
MEMO 2 PGS. LTR W/RO 76-25 10 NRC DIRECTORATE OF RE GUL A T OR Y OPE R AT ION S. REGION I. JULY 6 1976. DOCKET 50-220. T Y PE -OW R. MFG--G.E..
AE-N B AGA R AM MOHAWK
} q AVAIL AVAILAHILITY - NRC PuuLIC DOCUMENT ROOM. 178F H STREET. WASHINGTON. D.
C.
20545 (OS CENTS /PAGE -
.}
l '
MINIMUM CHARGE S2.OO)
CATEGORY 1700003090000 l
EDITION 0067 t Q CORP CG)E NMP
.} <
)
COUNTRY A
AUSTRACT CAUSE - INS T RUME N T ORIFi.
DURING TEST ING WHILE OPER ATING AT 984 POWER. 2 OF THE 8 APRM'S FA ILED TO a
PROOUCE A SCRAM SIGNAL At THE RE QUI RE D FLOW BIAS SET POINT.
THE 204 FLOW TEST TRIPPED HIGHER THAN Q
REOUBRED BY LESS THAN RX.
THE CAUSE WAS INSTRUMENT DRIFT.
THE INSTRUMENTS WERE RECALIBRATED TO Q
REQUIRED SPECS.
KEYWORDS REACTOR. DWR $F AI LURE $NE NE MILE POINT I (HWR)tREACTOR PROTECTION SY ST EM 8 INS TRUM E N T CALIBRATION $ FAILURE.
f INSTRUMENT 5 INSTRUMENT. SWITCH 5 TEST. SYSTEM OPERA DILI T Y 8 I NS TRUMENT. POWER RANGE 8 SET POINT 8DRIFF8 FAILURE.
Q INHERENT g
27/6/0000001-0000206//
105 l
ACCESSION NU.
00Z0185900 f} j Q
flfLE SET POINI DRIF T IN TWO APRM'S AT NINE MILE POINT I CORPAUTH NIAGARA MOHAWK POWER CORP., SYRACUSE. NY DATE 1976 l
TYPE O
Q MEMO 2 PGS. LIR W/RO 76-24 10 NRC DIRECTORATE OF RE GULA T OR Y OPER A T I ONS. REGION I.
JULY 6.
1976. DOCKET g!
50-220. T Y PE-HW R. M F G-G.E., AE -N I AG AR A MOHAWK AVAIL AVAILABILITY - NRC POOLIC DOCUMENT ROUM. 1717 H STREET. WASHINGTON. D.
C.
20545 608 CENTS /PAGE -
3 MINIMUM CHARGE S2.OOD Q
CATEGORY 1700003090000
,} i EDITRON 006F q
CORP CODE NMP CDUNTRY A
(-
AnSTRACT CAUSE - INS T RUMEN T DRIFT.
DURING TESTING WHILE OPERATING AT 98E POWER. 2 OF THE 8 APRM'S F A ILED TO
]i PRODUCE A SCRAM SIGNAL AT THE REQUIRED FLOW BIAS SET POINT.
THE 202 FLOW TEST TRIPPED HIGHER THAN i
REQUIRED BY I4.
THE CAUSE WAS INSTRUMENT DR IF T. DOTH WERE RECALIHR ATED TO REQUIRED SPECS.
KEYWORDS REACTOR. DWR 8F AILURE $NINE MILE POINT I (HWR)tREACTOR PROTECTION SYSTEM 3 INS TRUMEN T CALIBRATIONIFAILURE.
I' I N ST RUMEN T $ I NS TR UMEN T. SW I T CH i l E S T. SYSTEM OPER AB I L I T Y 8 INS T RUMEN T. POWER RANGEISET PO I Ni 8 DR Il-T 8F AI LURE.
G INHERENT 27/6/0000005-0000206//
306 l
Q ACCESSION NO.
00Z0835880 Q
T I T LE REACIOR WATER LE VEL INSTRUMENT IN ERROR AT BIG ROCK POINT CORPAUTH CONSUMERS POWER CU..
JACKSON. MS DATE 39T6 p
TYPE Q
Q MEMO 2 PGS. LTR W/RD-13-76 TO U.S. NRC. REGION III. JULY 19. 3976. DOCKET 50-155. TYPE--BWR. MF G-G. E.,
O O
O O
27/6/0000001-0000206//
106 CONTINUATION 3 PAGE 45 Q
AE-DE CH T E L Q
AVAIL AV AIL ABI LI T Y - NRC PUGLIC DOCUMENT ROOM. 3757 H STREET. WASHINGTON.
D.
C.
20545 (08 CENTS /PAGE -
MINIMUM CHAR GE s2.OO)
CATEGORY 1700005090000 Q
EDITION 0067 Q
r CORP CODE CPC i
COUNTRY A
ABSTR ACT C AUSE - EQU ALI Z ING VALVE LEFT OPEN.
DURING A PLANT STARIUP FOR REACTOR DEPRESSURIZ ING SYSTEM TESTING.
Q R OF THE 4 RtACTOR WATER LEVEL INSTRUMENTS WAS ERRONEOUS.
AN INSTRUMENT EQUALIZING VALVE HAD HEEN LEFT Q
lj OPEN.
A SPECIAL SET POINT CHANGE PRUCEDURE HAD DEEN USED FOR PRIOR WORK UN THE LEVEL INSTRUMENT GUT IT
.{L&Q @ W GM1OMt (O /1 mram3 NYW mt (MRCf3. W4 W7fMT40 DW Nh
_ _________.____j
evet w
.(s MEMO 2 PGSe LIR U/HD-lJ-76 TO U.S. NRC, REG I ON IIIe JULY 19e 197&e DOCKET SS-I S S e TYPE--BU@e MFG--G E s e
(
- )
i (?
') i k
27/6/0000001-0000206//
106 CONTINUATIDN l PAGE 45 AVAIL AV AIL ABILI T Y - NRC PUBLIC DDCUMENT RDOM. 1787 H STREET. WASHING 1DN.
D.
C.
20S45 (08 CENTS /PAGE --
/) '.
(N A E --BE CH TE L MINIMUM CHAR GE S2 00)
{
CATEGDRV 8700003090000
(}
EDITION 0067 r) i CORP CDD E CPC
{
COUNTRY A
l AHS TR ACT C AUSE - EQU ALIZING V ALVE LEFT OPEN.
DURING A PLANT STARIUP FOR REACIDR DE PRESSURIZING SYSTEM TEST I NG,
(]
1 DF THE 4 REACIOR W ATER LEVEL INSTRUMENTS W AS E RRDNE Uus.
AN INSTRUMENT E QUALIZING V ALVE HAD HEEN LEFT
() j OPEN.
A SPECIAL SET POINT CHANGE PROCEDURE HAD DEEN USED FOR PRIOR WORK ON THE LEVEL INS T RUME NT BUT IT I
DID NOT SPECIFY USE OF A CHECK LIST TO RETURN THE SYSTEM TD NORMAL.
KE Y WORDS BIG ROCK POINT (BWRi3REACTDR. HWR &F AILURE $RE AC TOR PR O T EC T I ON SYSTEM 8 FAILURE, INSTRUMENiilNSTRUMENT.
l
(}
SW I T CHiF AI LURE, MAINTENANCE ERRDR& SENSORS. LEVEL
() l 27/6/0000003-0000206//
307 A CCES S ION MO.
0020135866
(}
TITLE SET POINT OR IF T IN A PR M AT PEACH BOTTOM 3
)
CORPAUTH PHILADELPHIA ELECTRIC Co.. PHILADELPHIA. PA DATE 89F6 TYPE O
(}
MEMO I PG, LER S0-2 78-3-76-4 8 /3L 10 U.S.
NRC. JUNE 7,
1976, DOCKET S0-278. T fRE --BW R. MF G--G.E. e A E--BE CHI EL r} j AVAIL AVAILABILITY - NRC PUBLIC DOCUMENT ROOMe 3787 H STREEie WASHINGTON, D.
C.
20S45 408 CENTS /PAGE --
CATEGORY 1F00005090000 g
(}
EDITIDN 0067
()
i CORP CODE PEC l
CDUNT RY A
g ADSTR ACT CAUSE - DEFECT IVE ZE NE R DIDDE.
DURING TESTING WITH T HE REACTOR AT 784 POWER. CHANNEL 8 APRM W AS F OUND (p
TO IRIP AT FLUX LE VE LS HIGHER THAN LIMITS.
THE SET POINI SHIFT WAS CAUSED BY A DEFECT IVE IN473A ZENER t}
DIODE IN THE FLOW CONTROL REFERENCE UNIT.
THE DIDDE WAS REPLACED AND THE CHANNEL RE T URNE D 10 SE RV ICE.
K E Y WORDS REACTOR, BWR &F AILURE 3REACIOR PROTECYl0N SYSTEMISDLID STATE DEV I CE 3 I NS T RUME N T CALIBRATION 3 FAILURE.
INSTRUMENI3 INSTRUMENT. SWITCHiiEST. SY ST EM DPERASILETYilNSTRUMENT, POWER R ANGE 3SE T POINT ; PEACH BOT TDM J (p
(DWR)3DRBFTIFAILUREe INHERENT gg 27/6/0000003-0000206//
108 ACCESSION NO.
00Z0135743 gg l gp TITLE SE T POINT DR IF T IN POWER RANGE NEUIRON MONITOR AT DRE SDE N 3 COkPAUTH COMMONWE ALT H ED E SON 00..
MORRIS, BL DATE 1976 TYPE O
(}
MEMO 2 PGS, LTR W /R O S0 -010/19 7 6-0 TO NRC D IRECTORA TE OF REGULATORY DPERATIONS, REGION III. JULY 8.
- 19T6, gg DOCKET S0-30, T YPE--OuR e M F G --G. E.. AE--BE CH T E L AVAIL AVAILABILITY - NRC PUBLIC DOCUMENI RDOM. 1787 H STREET. WASHINGTDN.
D.
C.
20S45 (08 CENTS /PAGL --
MINIMUM CHARGE S2 00)
(}
CATEGORY 1700003090000 qg l
EDI110N 0067 CORP CODE ORS COUNTRY A
(}
ABSTRACT C A USE - I NS I RU ME N T DRIFT.
DURING TESTING WITH THE REACIDR AT 82% POWER, 1 DF THE 6 POWER RANGE NEUTRON gg MONITOR CH AN NE LS WAS FOUND TO ACTUATE AT 1254 PO WER. E XCEE DING T HE 12JE LIMlf.
THIS WAS CAUSED BY INSTRUMENT DRIFT.
THE CHANNEL WAS RESET 10 885% POWER.
THESE CHA NNELS ARE AGING TUBE-1YPE INSTRUMENTS 1
THAT ARE SCHEDULED TO BE REPLACED WITH NEW GE SOLID-ST ATE WI DE RANGE MUNITORS DURING THE NEXT REFUELING
(}
DUTAGE.
(g KE Y WDR DS REACTOR. BW R & DRE SDEN I (DWR);FAILUREIREACTOR PROTECTION SY ST EM i l NS TRUME NT C AL IBR A T I DN I F A ILURE,
l INSTRUMENf8 INSTRUMENT, SWITCH 37EST. SYSTEM UPER ABILI T Y 3 INS T RUME N T, POWLR R ANGE iSET POINTIEFFECT, AGEi DRIFT
()
()
c) c)
i C)
GD 27/6/0000005-0000206//
109 PAGE 46
(*)
ACCESSION NO.
00ZOIIS686 (g
TITLE INSTRUMENTS FAILS FROM INTERNAL LF. AK AT ORUNSWICK 2 CORPAUTH CAROLINA POWER & LIGHT CO.,
RALEIGH. NC DATE 1976
(}
TYPE O
()
MLMO 2 PGS, LTR W /R O 76-09 TO U.S.
NRC. REGION Ile JUNE 30. 1976. DOCKET S0-224, TYPE--6WR. MFG--G.E.e AE --UE C C a
AVAll AV AIL ABI LI T Y - NRC PUHLIC DOCUMENT RDOM, 378F H STREET. WASHINGTON, D.
C.
20545 408 CENTS /PAGE --
() /[
- ()
MINIMUM CHARGE S2 003 CATEGORY 1700003090000 MDiMldGQ.
E.DR L
(*
aj s
1 ()
)
C 0
27/6/0000005-0000206//
109 PAGE 46
(}
ACCESSION NO.
002081S686
()
T I T LE INSTRUMENTS FAILS FR OM INTERNAL LEAK AT BRUN$wlCK 2 CORPAUTH CAROLINA POWER G LIGHT C D.. RALEIGH. NC
{
DATE 8976 I
(y TYPE O
,}
l MtMO 2 PGS. LIR w /R O 76-89 TO U.S. NRC. REGION II. JUNE 30. 1976. DOCKET S0-324 T Y PE --O w R. M F G --G. E..
A E --UE & C AVAIL AVAILABILITY - NR C PUBL I C D DCU MEN T RDOM. 1787 H STREET. WASHINGTON. D.
C.
20S4S 108 CENTS /PAGE --
(}
MINIMUM CHANGE S2.00)
/)
CATEGORY 1700003090000 EDITION 0067 CORP CODE AHV
(}
COUNTRY A
()
ABSTRACT CAUSE - PIPE CROSS-T HRE ADED.
WITH THE REACTOR AT 2% POWER IN T HE S/W MDDE. 2*n28-LIS-NO248 MALFUNCTIONED DUE 10 AN INTERNAL LEAK.
THE ASSOCI AT ED INSTRUMENT CH ANNEL WAS MANUALLY TRIPPED.
A THREADED PIPE INSIDE THE INSTRUMENT HOUSING WAS LE AK ING DECAUSE OF A CROSS ED T HRE A D.
THE THREADS wERE J) l
.g (T
CHASED AND THE PIPE REINSTALLED WITH NO LEAK.
KCYWORDS REACIOR. HWRIF AILURL tRE ACTOR PROTECTION SYSTEMiRNSTRUMENT CALIBRA T ION IF AILURE. INSTRUMENT 3tNSTRUMENT.
g SWIICH;1EST. SYSTLM OPERABILITY 3 FAILURE. INST A LL AT I DN ERROR 5LE AK 80RUNSW I CK 2 S DwR 3 8 SEN SORS. LEVEL l
- (}
27/6/0000003-0000206//
180
,}
j ACCESSION NO.
0020185466 TITLE SET POINT ORIFT IN REACTOR WATER LE VEL SwlTCHES AT ORUNSwlCK 2 CORPAUTH CAROLINA POWER & LIGHT CD..
RALEIGH. NC i
()
DATE 1976
() {
TYPE O
I i
MEMO 2 PGS. LTR w/LER 76-84 TO U.S. NRC. REGION II. JUNE 25. 1976. DOCKET S0-324 T YPE --O wR.
MFG--G.E.,
A E --UE E C I
(}
AVAIL AVAILADILITY - NRC PuuLIC DOCUMENT RDOM. 1787 H STREET, WASHINGTON. D.
C.
20545 608 CENis/PAGE --
() -
I MINIMUM CHA R GE S2.OO) 1 C A TEGDR V 8700003090000 EDITION 0067 l
Q CORP CCDE AHV Q,
I t
COUNTRY A
ABSTR ACT CAUSE - CIRCUI T DESIGN DEFICIENCY.
DURING REACIDR LOW WATER LEVEL TESTING WITH THE REACTOR AT 72%
l POWER. 3 LOW LEVEL INDICATOR SWITCHES ACTUATED DELOW THLIR LIMITS AT ~44
-52.
AND -80 INCHES 4
(.
RE SPEC T I VEL Y ON FIRST TRY.
UPON EMMEDI ATE RETEST THEY RESPONDED NORMALLY A1 -32 INCHES.
THE EMISTING
} l j
CIRCUIT DESIGN USES HIGH LEVEL SWITCH FOR LOW LEVEL FUNCTIONS AND V I CE-VER S A.
THIS CAUSES THE SwlTCH TO OPERATE DUISIDE ITS INIENDED RANGE REDUCING SEI POINT REPEATIBILITY.
T HE DESIGN HAS BEEN CDRRECTED.
KLYWORDS REACTOR. BWR3 FAILURE 3 REACTOR PROTECTION SY ST EM ll NS T RU MEN T C ALI BRA T I DNIF A ILURE. I NS T RUMENi i l NST RUME NT.
(i SwliCH3fEST. S YS T E M OPER AB ILI T Y 5 F A ILURE. DESIGN ERROR 8SEI POINTIHRUNSulCK 2 (OWR 3 80 RIFT 3 PRESSURE
,)
VE SSELS 8 SE NSUR S.
LEVEL 27/6/0000001-0000206//
Ill f"
ACCESSION NO.
0020835438
.)
TITLE SET POINT DRIFT IN A PR M AT FIT 2 PATRICK CORPAUTH NIAGARA MOHAWK PDwER C OR P.. SYRACUSE. NY DATE 1976
(
TYPE O
()
~
MEMO 2 PG. LTR w/RO 76-22 TO NRC DIRECIORATE OF LICENSING. JUNE 23. 1976. DOCKET S0-333. T YPE--owr.
MF G --G. E.. AE--STONE G WEHSTER AVAIL AVAILABILITY - NRC PUBLIC DOCUMENT RDOM. 3787 H STREET. WASHINGTON. D.
C.
20545 108 CENTS /PAGE --
(j MINIMUM LHARGE S2.00)
()
CATEGORY 1700008090000 EDITION 0067 CORP CODE NMP
()
COUNTRY A
(g ABS TR ACT CAUSE - INSTRUMENT DRIFT.
DURING A TEST OF DPERATING AT 95% POWER. I OF THE 6 APRM'S FAILED TO PROVIDE
()
CD
()
()
27/6/0000005-0000206//
Ill CDN T I NUA T I ON I
PAGE 47 A TRIP SIGNAL At THE 3 25% FLOW POINT.
THE APPARENT CAUSE WAS DRIFT.
T HE APRM WAS RECALIDRATED AND
()
()
TESTED PROPERLY.
KEYWORDS REACIOR. O wR IF AILUNE $RE ACTOR PROT E C T ION SY ST EM 8 F I T 2P A T R I CK ( UwR i ll NST RUMEN T C ALIBR AT ION tF AILURE.
INSTRUMENiilNSTRUMENT. SwliCHITEST. SYSTEM OPERAHILITYlINSTRUMENT. POWER R ANGE 3 SET POINiiDRIFT 27/6/0000001-0000206//
Il2 ACCESSION NO.
00Z0114762 TIILE SE1 POINT DR IF T IN APRM CHANNEL AT ARNOLD
()
CORPAUTH IOWA ELECTRIC LIGHT C POWER CO..
CEDAR RAPIDS. IA
()
l DATE 1976 l
M O
1
.~.
Luuee a w a
=
POWER. 1 OF THC 6 APR M'S FAILED TO PROVIDE y
- BS T A ACT CAUSE - I NS T RU wE N T DRIFT.
DLRING A 1E S T tsF DOER AT ING' A T 914
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2 7/6/00 0000 3-000u206//
lit CONTINUATION I PAGE 47 A TRIP SIGNAL At itt $ 25% FLOW POINT.
T HE APPARENT CAUSE WAS DRIFT.
T HE APRM WAS RECALIBRATED AND
/)
(}
TESTED PROPERLY.
KE YWORDS REACIOR. B WR IF AILukE IRE ACTOR PROT E C T ION SY ST EM IF I T 2P A T R if K ( SW A lil P5 7RUNEN T C AL IBR AT ION 4F AILURE..
INSTRUMENI; INSTRUMENT, SW11CHITEST. SYSTEM DPERABILITYilNSTNUNCNT. POWER RANGCISET POINiiORIFT 2F/6/0000005-0000206//
132 l
ACCESSION NO.
0020184762 il TIILF.
SEI POINT DRIFT IN A PR M CHANNE L / T ARNOLD (4
CDE P4UTH IOWA ELECTRIC LIGHT & POWER CD.. CEDAR RAPIDS. lA (g
~DA1E 1976 1YPE O
MEMO 2 PGS. LTH W/LER 76-34 T D NRC OFFICE OF 1 & E.
REGION &lf. JUNE C.
1976. DDCKET 50-333. TYPE--DWR.
(}
MF G--C. E., AE--COMMO NWE AL TH ASSOC.
q)
AVAIL AVAILABILITY - NRC PUBLIC DOCUMENT ROOM. 378F H SIRLET. %ASHINGTON. D. C.
20545 8 08 CEN TS/P AGE --
MINIMUM CHARGE 52.00)
CATEGORY 37c0005090000
()
EDITION OObF
()
CORP CODE OGN COUNTRY A
AhSTRACT CAUSE - INSIRUMENT ORIFT.
DURING TEST ING WI TH THE REACfDR AT 62% POWER. APRM CH ANNEL A UPSCALE 1 RIP
(}
W AS F OUND AT 55.5%. EXCEEDING THE 55 02 LIMil.
THE C AUSE W AS INSIRUMENT DRIFT.
APRM MODEL 13603188
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l AAGE CARD WAS RECALI BRA TED.
KEYWORDS REACTOR. HW4 3F AILURE 8RE ACTOR PROTECTION SYS TE64 % INSTRUMEN T CALIBRATIONIFAILURE. INSTRUMENT 3 INSTRUMENT.
SWITCH 3fLST. SYSTEM OPEH AS I L I T Y i I NS TRU MEN T. POWLR HAF%E8 SET POINT 3 ARNOLD IOWR)iDRIFT3 FAILURE. IMHERENT 27/6/0000001-0000206//
133 ACCESSION NO.
0020184425 TITLE SET POINT DR IF T I N R E AC T OR WATER LEVEL SWITCH AT QUAD CITIES I j (}
CDRPAUTH COMMONWEALTH E D I SON CO..
CORDOVA. EL r]g DATE 3976 TYPE O
MEMO 2 PGS. LIR W /R O 50-254/76-87 T O NRC OF F I EE OF I & E. REGION III. MAY 27. 1976. DOCKET 50-254 gp T YPE --UW R. MFG--G.E..
AE--SG T & LUNDY gg AVAIL AVAILABILITY - NHC PUBL IC DOCUMENI HOOM. 1787 H STREET. WASHINGTON. D.
C.
20545 (08 CENTS /PAGE --
MINIMUM CHARGE S2.OO)
CATEGORY 1700003090000 gp EDITION 0066 gg CORP CODE DRS COUNTRY A
AOSTRACT C AU SE - INS T RU MEN T DRIFT.
DURING A LOW REACTOR WATER LEVEL TEST WHILE OPE R AT I NG AT 9 74 POWER. ONE O
SWITCH TRIPPED AT
+6 8 INC HE S WHICH EXCEEDS THE
+8 INCH LIMIT.
THE APP ARE NT CAUSE WAS I NS T RUME N T g
OR'FT.
THE SWITCH W AS REC AL IHR A T ED.
e KEYWORDS REACTOR. HWR IF AILURE tRE ACIOR PROTECTION SYS T EM i t 4ST RU MEN T CALIBR AT ION 3F AILURE. I NSTRUMENT 3 t NST RUMEN T.
SWITCH 8 TEST. S YS T EM OPER AB ILI TY 8 00 AD C I T IES 1 IDWR); SET POINI80 RIFT 8 PRESSURE VESSELSISENSORS. LEVE L 27/6/0000005-0000206//
134 ACCE SS ION NO.
0020132383 TRILE SE T POINT DRIFT IN DIFFERENT I AL PRESSURE SWITCH At VERMONT YANKEE (3
CORPAUTH VERMONT YANKEE NUCLEAR POWER CORP., RUILAND. VT g
V DATE 19F6 TYPE O
MEMO 3 PGS. LTR W /R O-76-0 6/3L 10 NRC DFF ICE OF 1 & E. REGION I,
M ARCH 24. 3976. DOCKET 50-275. TYPE--BWR.
O MF G--G.E.. AE--E B A SC O Q
V AVAIL AV A I LA BIL I T Y - NHC PUULIC DOCUMENT ROOM. 1787 H STREET. WASHINGTON. D.
C.
20545 (OS CENTS /PAGE --
MINIMUM CHARGE S2.OOD CATEGORY 1700005090000
{}
EDITION 0065
'}
CORP CODE APZ c>
c)
C)
GD 27/6/0000005-0000206//
114 CONTINUATION 1
PAGE 48
{}
CDONTRY A
(g ABST RA CT C AU SE - INSTRUMENT DRIFi.
DURING A IEST WHILE OPER AT ING AT 994 POWER. I OF THE 4 LOW-LOW WAIER LEVEL SW I T CHES A SSOC I A TED WITH IHE DIFFERENIIAL PRESSURE INORCATING SENSOR ACTUATED AT A VALUE LESS THAN -60 IN CHE S OF W A TE R.
THE LOWER LIMIT IS -44 5 I NC HE S.
T HE APPARENT CAUSE WAS INSTRUMENT DRIFT.
THE YARWAY CDRP.. MODEL 4488-C. RE MO T E LIQUID INDICATOR SWITCH WAS IMMEDIATELY ADJUSTED TO ~48 INCHES.
()
(}
KEYWORDS REACTOR. BWRIFAILURECREACTOR PROTECTION SYS T EM & I NST RUME N T CALIORATID18 FAILURE. INSTRUMENTEINSTRUMENT.
SWITCH 3 TEST. SYSIEM OPER AB I LI T Y 3 VERMONT YANKEE (HWR)iSET POINiiDRIFTISENSURS. LEVEL 27/6/0000001-0000206//
IIS
()
J d --()
A W'55'"" ""-
? 'o' u'!
- -------- ---------]
Lunesw.
ww ws g
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j.
j
(
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(2
- )
27/6/0000005-0000206//
184 CDNTINUATION 1 PAGE 45
{
CDUNTRY A
g i
ABS TR A CT CAUSE - I NS TRU ME N T DRIFT.
DURING A TEST WHILE OPERATING AT 9 94 POWER. 3 OF 9 NE 4 L o w-LOW WATER LEVEL Su li(HES ASSOCI ATED elTH THE DIFFERENilAI PRESSURE INDICATING SENSOR ACTUATED AT A V AL UE LESS THAN -50 F"C"LS OF WATER.
THE LOWER LIMIT IS -44.5 INCHES THE APPARENT CAUSE WAS L MS TRUMENI DRIFT.
THE
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(ARWAY CORP.. MODEL 4418 -C. REMOTE LIOulD INDICATOW SWITCH WAS IwMEDIATELY ADJUS TE D TD -48 INCHES.
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KEYWORDS HEACTOR. OwH;F AILUNE 3HE ACT OR PROTECTION SY S T E M 3 I NS T R UME N T CAL SOR A T ION 3F A ILURE. I NS T RUM EN T I IN S T RUMtN T.
SWITCHETFST. SYSTEM UPER AS I LI T Y & VER MON T YANKEE GUwR)35ET POIN T I DR I F Y ;5E NSORS. LE VEL
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27/6/0000005-0000206//
135 i) i ACCESSION NO.
0020183933 TITLE SET POINT DRIFT IN REACTOR LOW WATER LE VEL SWITCHES AT DRUNSulCK 2 CORPAUTH C AR OL I N A PDwER & LIGHT CO..
SDUTHPORT. NC (4
DATE 1976
()
TYPE O
MEMO I PG. LTH RPT TO U.S. NRC. HLGIDN I I. F EU. 9.
3 9 F6. D DCKE T 50-324 TYPE--owr.
MFG--G.E..
AE --UE E C AVAll AVAILABILITY - NRC PUULIC DOCUMCNT ROOM. 1787 H STREET, WASHINGTON. D.
C.
20545 (08 CENTS /PA6E --
l r} 1 (3
MINIMUM CHARGE S2.OO)
CATEGORY 1F00003090000 ED11EDN 0065 CUNP CUDE AHV (5
COUNTHY A
-)
AOSTRACT CAUSE - INSTRUMLNT DRIFT.
CALIBRATION TESTS SHOWED 4 REACTOR low WATER LE VEL SCR AM SwlTCHES TO DE DUT OF CAllDRATEDN.
T HE Y WERE IMMEDIATELY RECALIBRATED.
KEYu0HDS R E AC I OR. OwH 3F AILURE REACTOR PROTECTION SYST EM 8 t N5TRUMEN T C ALIBR A T I DN 8F AILURE. INSTRUMENT 3 INSTRUMENT.
. (}
SulTCHITEST. SYSTEM OPER Au l LI T Y 8 SE T POIMiiBRUNSw3CK 2 I BwR ) 3 DR IF T 8 SENSORS. LEVEL
/)
r I'
27/6/0000001-0000206//
186 ACCESSION NO.
0020815670 l ()
TITLE SET POINT DRIFT IN HEACTD4 LEVEL INDICATOR AT NINE MILE POINT
.} !
CORPAUTH NIAGARA MOHAWK POWER CDHD.. SYHACUSE. NY
}
DATE 1976 9
j TYPE O
l
(}
ME MO 2 PGS. L1R w/HO 76-04 TO NRC DIRECT ORATE OF RE GULAIORY OPLR ATIDNS. RE G l DN I. MARCH 3.
1976. DOCRET
{} I 50-220. f Y PE --Uw H.
MFG--G.E..
AE--NIAGARA MOHAWK AVAIL AVAILAulLITY - NHC PUBLIC DOCUMENT R DOM. 1717 H STHEET. WASHINGTON.
D.
C.
20545 808 CENTS /PAGE --
(}
CATEGDRV 1700003090000
()
EDITION 0065 q
CDRP CODE NMP COUNTRY A
(}
ASS 1RACT CAUSE - I NST RU MENT DRIFT.
DURING TESTING WITH THE REACfDR AT 904 PO W E R. T HE REACTOH L O-LD-LO LE VE L
.) i INDICATDH IHIPPED AT 831 INCHES R A INER THAN THE 329 7 INCH M AX I MUM.
THE C AUSE W AS INSTRUMENT DRIFT.
KCYuGROS REACIOR. OwH;FAILUREININE M I LE POI N T B (bwH)4HEACIDH PROIECTION SYST E M & INS TRUMEN T CALIDHATIDNIFAILUNE.
INSTRUMENTiENSTRUMENT. SulTCH3fEST. SYSTEM DPERADILITY3 SET POINT EDHIF T 8 SENSORS. LE VEL I
2 7/6/ OO OOt=* l-OO OO 206//
83 7 ACCESSION Ns.
002018340F 181LE SET POINT DRIFT IN F OUR LE VEL SW I T CHE S AT ORUNSwlCK 2
{
COMPAUTH CAROLINA POWER & LIGHT CO.,
e LLE I GH, NC
()
DATE 89F6 TYPE O
j MEMD 2 PGS. LIR w /R O-76-2 9 10 U.S. NHC. REGION II. ELB. 23. 19F6. DDCKEY S0-324 TYPE--BWR.
MFG--G.E..
~
()
A E --UE E C
()
AVAIL AVAILADSLITY - NRC PU6LIC DOCUMENT RDUM. 1717 H STREET. WASHINGTON.
D.
C.
20S45 8 08 CEN TS/PAGE --
CA TEGORY 8700003090000
()
EDITION 0065 (g
CDNP CODE ANV
$)
()
C/
C) 27/6/0000003-0000206//
187 CONTINUATION !
PAGE 49
(')
CDONTRY A
()
AUSTRACT CAUSE - I N S T RU ME N I DRIFT.
DUHING TESTING OF RL LCfDR LOW LEVEL Su l TCHE S WH ILE OPER AT ING AT 83% POWER. 4 SCHAM SW I T C HL b WEHE FDUND TO BE DUT OF CALIGNATION.
THE be liCHES WEHE IMMEDIATELY RE C AL I BR A I E D.
T HE APPAHENT CAUSE WAS I NS T RUMEN T DRIFT.
{}
KE Y WORDS REACIOR. OwH 3F AILUNE tHE ACT OR Ph0fECTION SYSTEMilNSTRUMENT CALISHATION8 FAILURE. INSTRUMENf3 INSTRUMENT.
()
SWITCH 31EST. SYSTEM DPER AS I LI T Y t SE T POINIIBRUNSulCK 2 (H wR llDH I F T 8 SENSONS. LEVEL 27/6/0000003-0000?O6//
888
() /
()
ACCESSION NO.
0020385408 TITLE DRY wELL PE NE 1R AT ION ISDLAllDN VALVE FAILS AT BRUNSelCK 2 CZM N.YFVL'1.GFTG ft.lWG1LMahn fr.DCMGardIR I
e.u a e a une wu.a CONP CODE
(.H V i
[ O 9
O 9
2F/6/0000005-0000206//
IBF CONTINUATION 8 PAGE 49 Q
COUNTRY A
Q I
AUSTRACT CAUSE - I NS T RUME N T DRIFT.
DURING 1ESTING OF REACTOR LOW LEVEL SW l 3 CHES WH ILE OPER AT ING AT 834 power. 4 SCHAM SulTCHES WERE FOUND TO BE OUT OF CALIBRAllON.
THE SWITCHES WERE IMMEDIATELY REC ALIBR A T ED.
THE APPARENT CAUSE WAS I NSTRUMEN T DR 8 F T.
Q KE YWORDS REACTOR. OsH tF AI LUNE &RE AC10R Ph0lECTION SYSTEMllNSTRUMENT CALIBRATIONIF AILURE. INSTRUMENT 8INSTRUMENTe Q
SWITCHilEST, SYSTEM OPERASILITV3 SET POINT 3HNUNSwICK 2 IBwRilDRIFT8SENSONS. LEVEL 27/6/0000001-0000206//
II8 Q
ACCESSION NO.
CO2Olll403 g
TITLE DRY WELL PENE IR Al lON ISOLATEDN VALVE FA ILS A T HNUKSW ICK 2 I
CDEPAUTH CAROLINA POwEJ4 & LIGHT CO..
HALEIGH, NC DATE 89F6 Q
TYPE O
Q MEMO 4 PGS. LTR w/MO-F6-32 10 U.S. NRC. REGION II. FES. 27. 1976. DOCKEI ff J-324 T YmE-O wR. MF G-G.E..
A E-13t E C AVAIL AVAILAHILIT" 1HC PUBLIC DOCUMENT ROOM. 3717 H S T RE E T. WASHINGTON. D.
C.
20545 (08 CENTS /PAGE -
p MINIMUM CH Ak C.j",
S2.001
} l1 CATEGORY IF0000812OOOs E D I T ION 0065 CORP CCDE ANV
.}
p COUNTRY A
ABSTRACT CAUSE - MOISTURE IN AIR LINE.
WITH THE REACTOR IN HOT STANDOY IN Su MODE. THE AVAIL ABLE LEG ISOLATION VALVE FOR A HEACTOR LE VE L INDICATOR WAS FOUPO 10 BE Ism.ATED.
THE V ALV E W AS F OUPS TO DE STICKY Am MOIS1UNE W AS FOUND IN THE INSTRUMENT AIR LINES.
MOISTURE W AS PURGED FROM THE L INE S.
THE VALVE STEM p
WAS MARKED SO IHAT ITS POSITION COULD BE DETERMINED.
THE V ALVE WAS CYCLED SEVER AL TIMES.
G KEYWORDS NEACTOR. HwHiF AILUkE 3 CONI A INMENI ISOLATIONEREACIOR PROTECTION SYSTEM 5 WATER 57UMING3 PNEUMATIC SYSTEM 8 BRUNSwlCK 2 (owr)8 FAILURE. INHERENT 8 VALVES &tENSONS. LEVEL p
27/6/0000003-0000206//
189 g
ACCESSION NO.
0020881400 TITLE LEVEL Swi tCH F AILS TO RESET AT ARNOLD CORPAUTH IOWA ELECT 4 8C LIGHT & POWER CO., CEDAR RAPIDS. 84 G
DATE 1976 g.
TYPE O
1 MEMO 2 PGS. LTR W/R O F6-007 IO NRC OFFICE OF I E E. REG 3ON !!Ie FEB. 13. 3976. DOCKET S0-331. T YPE-O wR.
MF G-G.E., AE-COMMUNWE AL T H ASSOL.
Q AVAIL TVAILABILITY - NRC PUBLIC DOCUMENT ROOM. 1787 H STREET. WASHINGTON. D.
C.
20545 4 08 CENTS /PAGE -
g m.dNIMUM CHARGE S2.OOD CATEGORY IF00003090000 EDITION 0065 G
CORP CODE OGN g
COUNTRY A
AOSTRACT CAUSE - NOT YEI OETERMINED.
DURING TESTING WITH TFE REAC10R AT 834 POWER. RPS LS-4420 FAILED TO RESET HESULTING IN PAR TI AL COMPLETION OF THE HPS TRIP LOGIC.
FAILUME IS CONSERVATIVE.
THE CAUSE WILL DE
("h I N VE S T I GA T ED AND REPA8RS MADE DURING THE UPCOM ING OUV AGE.
g V
KEYWORDS REACIOR, OwREFAILUNE8HEACIOR PHOTECISON SYSTEMtFAILUHE, INSTRUMENT 35NS1RUMENT. SWITCH 8TEste SYSTEM OPER AD ILI I Y $ AR NOLD (DwR)ISENSORSe LEVEL 0
27/6/0000001-0000206//
120 g'
ACCESSION NO.
0020110948 TRILE 10HBINE. CONINOL V ALVE CLOSURE F A ILS 70 INITIATE HALF-SCRAM AT DRESDEN 3 CORPAUTH COMMONWL ALT H EDI SON C0.. MORRIS. IL DATE 19 F6 Q,
1YPE O
MEMO 2 PGS LTR W/RO S0-249/19F6-3 TO MRC OIREC TORA TE OF REGULATORY OPERATIONS. REGION III. FEB. Se 1976.
DOCKE1 50-249. 1 YPE-owr. MF G-G.E.. A E-SG T & LUPeY Q
CATEGORY 3700008090000 Q
j EDITION 0065 I
O O
O 27/6/0000005-0000206//
120 CONTINUATION I PAGE SO O
COUNTRY A
AUSTR ACT CAUSE - PROHA6LY SDLENOID MALFUNCTION.
DURING THE WEEKLY TURBINE CHECK WHILE OPE R A T ING AT 604 PUWER.
CLOSUNE OF CONTHOL VALVE 2 AGAIN F AILED TU INITIATE A REACTOR HALF-SCRAM.
DURING VALVE EMERCISE. 1HE Q
FINAL 4 OF 8 A1 TEMPTS SUCCESSF ULLY INITIATED A SCRAM ON CHANNEL A.
THE F AST-ACT ING SOLENOID ON THIS Q
CONINOL VALVE WILL DE INSPECTED AND. IF NECESSARY. REPLACED DURING T Hti HERT SHUTDOWN.
A SIMILAM FAILUNE HAD OCCUNRED 6 DAYS EAHLIER.
KEYWORDS HEACION. den 5FAILUkE8HEACIOR PHOTECTION SYSTEMtDRESDEN 3 (SwH)$ INSTRUMENT. SWITCH 3 TEST. SYSTEM
, Q OPEHABILEIY$TUNHINE8FAILUNE. INHERENT 8SOLENORD8 VALVES Qj
~ ]/*'******'******** L '*'
~ 1 E98T2DN O@SS l
(?
Cl
- (?
l 27/6/0000003-0000206//
120 CDNTINUATION I PAGE So
- }
}
- p COR P COD E ORS T
CDUNTHY A
l AHSIR ACT C A U SE - PROSABLY SOLENOID M ALFUNCT I ON.
DURING THE WEEKLY TURDINE CHECK WHILE OPE R AT I NG AT 605 POwCR.
f CLOSUNE OF CON I N DL VALVE 2 AGAIN F AILED 10 SNITIATE A REACIDR H ALF -SCR AM.
DURING VALVE ENERCISE. THE (5
FINAL 4 OF 8 A TTEMPIS S UCCESSF ULLY INITIATED A SCRAM DN CHANNEL A.
THE F AST-ACT ING SDLENOID ON THIS
.}
CONTHOL VALVE ulLL DE INSPECTED AND. IF NECLSSARY. REPLACED DURING THE NEXT SHUTDOWN.
A SIMILAR FAILURE HAD DCCUNRED 6 DAYS EAkLIER.
KEYuGMOS REACIOR. DwR 3F AILUNE NEACIDH PHOTECTION SYSTEM 8DRESDEN 3 ISwul& INSTRUMENT. SwlTCHITEST. SYSTEM
(}
DPENABILITY31UR8ENE5FAILUME. I NHER ENI 5 SDLENOIDIV ALVE S
()
27/6/0000001-0000206//
121 ACCESSION NO.
0020150944
(%
TITLE MAIN S TE AML INE R ADI A T I DN MON I T OR RE ADING lou A T MILLSIDNE I
()
COkPAUTH NORIHEAST NUCLEAR ENENGY CO., HARIFORD. CT DATE 1976 TYPE O
} l' (4
MEMO 3 PGS. LTR w/NO-76-1/3L TO NRC OFFICE OF I GE. REGION I. FEU. 19. 3976. DDCKET 50-245. TYPE--OWR.
MF G--G.E.. AE--ED A SCO AVAIL AVAILABILITY - NRC PUOLIC DOCUMENT ROOM. 3717 N STREEI. WASHINGTON. D.
C.
20545 (08 CENTS / PACE --
MINIMUM CHA N GE
$2.008 i
(4 CATEGORY 5700003090000
,}
EDITION 006S CORP CUDE ARG COUNTRY A
(}
AHS TR ACT CAUSE - AMP L I F I E R DRIFT.
DURING RDUTINE SURVEILLANCE ulTH THE REACTOR AT lout POWE R. I OF T HE 4 MAIN
() e STEAMLINE MADIATION MDNI TURS W AS FOUND TO HAVE AN DUTPUI OF 40% LDwER THAN REOUIRED.
THE AMPLIFIER HAD DRIFTED Low AFTER RECALSHRATION. THE MONITON APPEARED TO SE STABLE.
If 15 A GE 6 DE CADE LUGAR I I MM I C HADIATION MONITOR.
(}
KEYWORDS REACTOR. bur ;F AI LURE 1RE ACT OR PROTECTION SYSTEM 8 INSTRUMENT CALIBRA T ION 8 F AILLRE. I NSTRUMENT 31NST RUMENT.
() '.
SulTCH81EST. SYSTEM OPERABILITY & SET POINTIMILLSIONE I IDwRI EDR IFi tELECTRON IC FUNCT ION UNIISER ADI AT ION MONITORS j
(}
27/6/0000005-0000206//
122
()
ACCESSION NO.
0020I50363 I
IITEE RUD uliHDN Aw PERM E SSIVE LIGHT HLINKING DUR ING FUEL MOVEMENT AT PE ACH BOT TOM 3 C DRP AU TH PH I L ADE L PH I A E LE CT R I C CO., PHILADELPHIA. PA I
()
DATE 1976
()
TYPE O
i MEMO I PG. NO 50-2 78/3-76-8/3L TO U.S. NRC. JAN. 28. 1976 D OCK E T S0-278. T Y PE--ewR. MFG--G.E..
AE--SECHTE L AVAIL AVAILAHILITY - N9C PUBLIC DOCUMENT POOM. 1787 H STREET. w A SH IN GT ON. D.
C.
20545 808 CEN TS /PAGE --
);
CATEGORY I700003090000 EDITION 0064 COHP CUDE PEC
()
COUNTHY A
).
ABSTRACT CAUSE - LIMIT SuliCH DUT DF ADJUSTMLNT.
DURING FUEL MOVEMENT. THE HE ACTUR OPERATOR NOTED THE ROD l
w!!HOHAw PERMISSIVE LIGHT DLINKING 04 WHILE T HE REFUEL CRANE wAS OVER T HE CURE.
T HE GE LIMli SWITCH I
MODEL CRR ISG30 7 W AS CLOSING AND OPENING ON low SPOTS ON THE CAMMING SURFACE.
THE SWITCH WAS ADJUSTED
()
10 REMAIN OPEN OVER THE EN T IHE CAM SUHFACE.
,} '
KEYuDHDS HEACTOR. owr $F AI LUNE 8 FUEL HANDLINGl lNSTRUMENT. I N T ER LOCE ;F A I LUR E. INSTRUME NT 8 INSTRUMEN T.
SwlTCH3 l
FAILURE. MAINTENANCE ERROHtPEACH BOTTOM 3 IBwR i t CUNT ROL ROD DRI VES l
(4 27/6/0000001-0000206//
123
()
ACCESSION NO.
0020505887 TITLE SET POINI DR IF T IN IRM AT DRE SDE N 3 CORPAUTH COMMONWEALTH EDISDN CO..
CHICAGO. IL
{}
DATE 19FS
()
TYPE O
()
()
()
27/6/0000005-0000206//
323 CONTINUAtlON I PAGE 58
(}
ME MO 3 PGS. LIR w/A0 OSO-249/I975-4b TD NRC DIRECTOHATE OF REGULAfDRY OPERATIO45. REGION Ill. DEC. IS. 3975.
()
DOCKET 50-249. TYPE--owr. MF G--G.E.. A E --SG I G LUNDY AVAIL AVAILADILITY - NkC PUBLIC DOCUMENT RDOM. 3717 H S1HEET. WASHINGTDN. D.
C.
20545 508 CENTS /PAGE --
MINIMUM CHARGE S2.00)
(}
CATEGORY 1700003090000
()
ODIllDN 0064 CDHP CODE DRS COUNINY A
. ()
ABSTR ACI CAUSC - IN S T RU ME N T A CCUR ACY.
DURING TESTING ullH THE HE AC T OR AT 77% POWER. I DF T HE 8 INTERMEDIATE
() '
HANGE MDNIIDHS THIPPED A1 123/12S wHICH EXCEEDS THE 320/I25 LIMIT.
I NS T RU ME N T ACCURACY IS 4 DR - 5.St W FULL SCAD.
THE PHESENT LALIHMATION METHUSS DON'T ALLUw FOR SEI POINI DRIFT.
THE TRIP PORNT wAS
l Y
77PE O
D h
9 27/6/0000003-0000206//
123 CONTINUATION I PAGE 58 j
AVAIL AVAILADILITY - NkC PUBLIC DOCUMENT NOOM. 1737 H $1HEET, WASHINGTON. D.
C.
20545 (OS CENTS /PAGE --
Q (l p
MEMO 3 PGS. LIR w/AO 050-249/8975-45 TO NRC DIRECTONATE OF REGULATORY DPERATIO45. REGION III. DEC. 15, 5975.
t Dor.K E T 50-249 TYo*E--ewH.
MFG--G.E.,
A E-SGI & LL'NDY p
I MINIMUM CHARGE S2.00)
Q CATEGORY 1700008090000
- )
EDITION 0064 COHP CODE D45 COUNINY A
{
ASSIRACT CAUSE - IN S T RU MtiN T ACCURACY.
DURING TESTING WI TH THE RE AC TOR AT 775 POWER. 1 OF THE 8 INTERMEDIATE 4)
H Ap4GE MONITORS INIppED AI 5 21/125 WHICH EXCEEDS IHE 120/125 LIMIT.
I NS T RU ME N T ACCURACY IS + OR - 3.5%
f OF FULL SCALE.
THE PHESENT CAllBMATION METHOOS DON'T ALLOW FOR SE T POINT DRIFT.
THE TRIP PORMI WAS SET CORRECTLY.
s Q
KEYWORDS HEACTOR. awu 3F AILURE 8PROCEOUkES AND asANUALS IRE ACTOR PROTECTION SYSTEM 8DRESDEM 3 (SWR 33 INSTRUMENT gl CALIPHAIION3FAILUME. INSIRUMENIiINSIMUMENI. SWITCH 3 TEST. SYS1EM OPERASILITY3 FAILURE. ADMINISTRAIIVE g
CON T HOL 8 INS T RUMEN T. INTERMEDIATE RANGE 3 SET POINI(DRIFT J
.} (W Q
27/6/0000001-0000206//
124 ACCESSION NO.
0020106824 TITLE SET P3 INT DR IF T IN LEVEL SulTCH AT ARNOLD 1
CORPAUTH IOWA ELECINIC LIGli G POWER C0.. CEDAR RAPIOS. IA a
}f p
OATE 1975 I
i TYPE Q
ME MO 3 PGS. LIR w /AO 50-3 38 /75-64 TO NRC OFF ICE OF I & E.
REGION III. DEC. 32. 3975. DOCKET 50-338.
I g{f T Y PE-O wH. seF G-G.E.. AE-COMeeONwE AL TH ASSOC.
p AVAIL AVAILAOILITY - NRC PUBLIC DOCUMENT ROOM. 1787 H STREET. WASHINGTON. D. C.
20545 808 CEN T S/P AGE -
MINIMUM CHARGE S2.007 CATEGORY 8700003090000 EDITION 0064 g
CORP CODE BGN 3
COUNIRY A
AB SIM ACT CAUSE - INS T RUseE NT ORIFT.
DURING A RE ACTON LOW LOW LOW WATER LEVEL INSTRUMENT TEST. YtE TRIP SETTING OF A LEVEL IPOICAT ING SWI TCH W A S F OUPe 10 B E E96 INCHES OF COLD WATER WHICH E NCEEDS THE 892 4 INCH l G LIMIT.
THE APPARENT CAUSE WAS INSTRUMENT DRIFT.
THE INSTRUMENT W A S RE C AL IBR A T E D.
3
\\
KFYWORDS REACTOk. BwR3 FAILURE 8HEACTOM PROTECTION SYSTEMilNSTRUMENT C ALI DR A T I ONIF A ILLS 4E. I NST RUMENT 3 R NS TRUME DIT.
SeliCHITEST. S YS T EM OPERASILITYiSET POINT 8 ARNOLD SBWR)tDRIFT3 SENSORS. LEVE L
' Q 27/6/0000003-0000206//
325 3
ACCESSION NO.
00/0306440 TITLE SET POINT ORIFT IN LEVEL SWITCH AT HATCH I CORPAUTH GEUNGI A PO WE R CO. GEORGIA G
DATE 8975
}
TYPE O
MEMO 2 PGS. LIR w/AO 50-328/1975-75 TO NRC DIREL10RATI' OF REGULATONY OPERATION. REGION II. SEPT. 37. 1975.
DOCKET 50-328. TYPE -HwR. MF G-G.E.. AE -SS I G
AVAIL AVAILAHILITY - NRC PUBLIC DOCUMENT ROOM. 3787 H STREET. WASHINGTON.
D.
C.
20545 808 CENTS /PAGE -
g l
MINIMUM CHARGE
$2.00)
CATEGONY 1700008090000 EDI T ION 0062 Q
CORP CODE GPC g
COUNTRY A
ABSTRACT CAUSE - UNKNOWN.
DURING TEbflNG WITH 1HE HEACTOR SHUT DOWN. A REACTOR PhE SSURE VESSEL LEVEL SWITCH WAS FOUND TO OPERA TE DE LOW THE TECH SPE C L I M I T.
THE YARWAY LE VEL Sw l101 MODEL 4418C. wAS RESET.
Q INSPEC15 HN DID NOT REVEAL A PHOOLEM WITH THE SWITCH.
Q KE YwORDS HEACTOR. swr 8F AILUNE 8HE ACTOR PHOTECTION SYS T EM il NSIRuteLN T CALIBRATION 3FAILDRE. INSTRUMENilINSTRUMENT.
S u l T CH I T ES T. SYSTEM OPERAHILITYESET PO IN T 3 HAT CH I I R wR ) 3 DR IF l i SENSON S. LEVEL O
31 0
0 C
9 27/6/0000003-0000206//
126 PAGE 52 Q
ACCESSION NO.
0020106395 g
TITLE SET POINT DRIFT IN INN AT HRUN$wlCK 2 CORPAUTH CAROLINA POWER & LIGHT CO..
N.C.
DATE 1975 Q
TYPE O
Q ME MO 2 PGS. LTR w/AO 75-35 TO U.S. NRC. NEGION II. SE P T. II. 1975. DOCKET 50-324 1YPE--9WR. MF G-G. E.,
AE -UECC RVAIL AVAILAHILITY - N+4 C PUOL I C D OCUMEN T ROOM. 1787 H $1HEET. WASHINGTON.
D.
C.
20545 (08 CENTS /PAGE -
Q MINIMUM CHARGE S2.00)
Q.
CA1EGORY I700008090000 WMOC M9
]V j
h 0
27/6/0000001-0000206//
126 P AGL 52 Q
ACCESSION NO.
0020506395
- )
IITLE SET POINT DHIFT IN IRM AT BRUN$wlCK 2 COk PAU TH CAROLINA POWER & LIGHT CO..
N.C.
DATE 19FS p
iYPE O
/)
ME MO 2 PGS. LTR w/AO FS-35 TO U.S.
NRC. REGION II. SE P T. Sie 1975. DOCKET 50-324 IVPE--esR. MFG-G.E..
AE--UEEC AVAIL AV A ILAltI LI T Y - NHC PUHLIC DOCUMENT ROOM. 1787 H STREET. WASHINGTON, D.
C.
20545 (OS CEN TS/PAGE -
Q-MINIMUM CHARGE S2.OO3 Q
CATEGORY 1700005090000 I
I EDITION 0062 i
CORP CODE AHV gl Q
COUNTRY A
MS TR A CT CAUSE - INSTRUMENT DRIFT.
WHILE PERFORMING A REACTOR SHUTDOWN. INTERMEDIATE RANCE MONITOR C W AS F OUND
{
i OUT OF CALIBRAlluN.
RPS CHANNEL A WAS MANUALLY IRIPPED.
THE APPARENT CAUSE WAS I NS T R UME N T ORIFT.
THE i
(
Q KEYWORD".
REACTOH. swr 5F AILURE 8RE actor PROTECTION SYSTE M 3 INSIRUMENT C ALIBRA T ION 8F AILURE. INSTRUMENT 3 INSTRUMENT.
]'
SWITCH 5HEACTUR STARIUP E XPER IENCE 8 I NS T RUMEN T. INIEHMEDIATE RANGE 8 SET POINT 3 BRUNSWICK 2 ISwR)iDRIFT 27/6/0000003-0000206//
127
.) ',
Q ACCESSION NO.
00Z0106385 IITLE SET POINI DRIFT IN INTERMEDIATE RAN(.E NEUIROM MONITORS AT COOPER CORPAUTH NCURASKA PUOLIC power DISTRICT. NES.
j q {-
DATE 5975 Q
TYPE O
j MEMO 2 PGS. LTR w/UL 75-30 70 NRC OFFICE OF I & E. REGION EV. SEPI.
5.
1975. DOCKET 50-298. T YPE -nwR.
MF G =-G. E.. AE-GURNS & ROE AVAIL AVAILAulL3fy - NHC PUBLIC DOCUMENT ROO4. 1717 H STREET. WASHINGTON.
D.
C.
20545 8 08 C E N T S/P AGE --
I
- {t Q MINIMUM LHARGE S2.OD)
]1 CATEGORY 3700008090000 i
.)
EDITION 0062 1
COHP CCDE NPP
() i
' Q COUNTRY A
AUSTRACT CAUSE - INS T RUMEN T DHIFI.
DURING A CDNTROLLED SHUIDOwN WITH THE REACTOR AT 350 Mwf. CALIBRATION TESTS FOUND 3 IRM CHANNELS THAT EXCEEDED THE TECH SPEC LIMIT RE ADING OF 120/I25 OF FULL SCALE ON RANGE 10 AT LESS THAN 4SE POWER.
THE GAINS OF 2 CHANNELS WERE IMMEDIATELY ADJUSTED AS SPECIFIED IN TECH SPECS.
,~ '
THE T HIRD CHAf94tL COULD NOT HE ADJUSTED.
ILSTING FOUND THAT THE GAIN OF THE LDw FREQUENCY SECilON OF
()
l THE PRE-AMP w A S LESS THAN THE DESIGN VALUE.
THE PREAMPLIFIER WAS REPA RRED ADO RETURNED TO SERVICE.
8 KEYWONDS REACTOH. UwR EF AILUHE 8RE ACTOR PROTECTION SYSTEM 8 INSTRUMENT CALIBRATIONiFAILURE. I NS TRUMEN T 8 E NST RUMEN I.
I AMP LI F I EH 8 I NST RUMEN T. SWITCHiiEST. SYSTEM OPER ASILI E Y 8 INSTRUMEN T. I N T ER MED I A T E R ANGE ; COOPER (SwRl8 SET j
} (s POINTIDHIF T & ELECTRONIC FUNCT ION UNI TS 3) 27/6/0000005-0000206//
320 ACCESSION NO.
00Z0305173
{
TiiLE SET PotNI OF LEVEL SWITCH BELOW LIMIT AT VERMONI VANKEE
]
CORPAUTH VERMONT YANKEE NUCLE AR POWER CORP., RUILAND DATE 1975 TYPE O
Q MEMO 2 PGS. LIR w/AOR FS-36 TO NRC OFFICE OF I C E. REGION 1. AUG. 22. 3975. DOCKET 50-271. T YPE-8wR.
.)
MFG--G.E.,
AE-EB A SCO AVAIL AVAILAHILITY - NRC PUBLIC DOCUMENT ROOM. 1787 H STREET. WASHINGTON. D.
C.
20545 608 CENTS /PAGE -
MINIMUM CHANGE
$2.003 Q
CATEGORY IF00005090000 Q
EOIIION 0062 CORP CCDE AP2 COUNiRY A
Q ABSTRACT CAUSE - CALCULATION ERROM.
DURING A NRC I N SPE C T ION. THE INSPECTOR DISCOVERED THAT THE ECCS low-LOW g
REACTOR WATEN LEVEL INSTRUMENT SET POINT WAS 0.8 INCH OELOW THE TRIP LEVEL LIMIT OF t. F T lo.S IN.
A O
G O
O 27/6/0000001-0000206//
128 CONTINUATION 3 PAGE S3 Q
CALCULATION ERROR HAD BEEN INCONPORATED INTO IHE CALIBRAT ION PROCEDURE USED TO SET THE INST RUME N T SET g
POINT.
THE PRUCEDURE WAS REVISED AND THE INSTRUMENT RESET.
KE YWORDS REACIOR. HwN iF AILURE 8PHOCEDURES AND MANUALS 5 REACTOR PROILCTION SYS TEM 8 I NST RUME NT CAL! ORATION 3 INSTHUMENT. Sw l i CH 5 RE V I Ew 3 F A ILURE. ADMINISTRATIVE CONTROL; VERMONT YANKEE ( SwA 9 ;M AT HE M A T I C AL TREATMENil Q
SET POINiiSENSURS. LEVEL Q
27/6/0000003-0000206//
329 ACCESSION No.
00Z0104013 Q
TITLE SEi PUINT DHIFT IN REACTOR VESSE L LE VE L SWITCH AT FI12 PATRICK Q
CORPAUTH NIAGARA MOHAWK POWE84 CORP..
N.V.
. fYDW
(,
Ana t os at a sam - sasswas au.e cmava.
wwas. a aw a.-w...-..
[
LELCTO2 UAIEN LEVEL IN3fKUMENT SET POINT CAS @.G INCH BELO'3 THE 123# LEVEL LI%IT DF 6 FT 19.S IN.
4
()
- )
(
f (?
c) 2 F/6/000C 001-00 00206//
128 CON 13NUATION I
- AGE S3
()
CALCULATION ERROR HAD BEEN I NC DRPOR A T ED INTO THE C ALIBRAT ION PROCEDURE USED TO SET THE IN ST RUMEN T SE E
- )
I POINT.
THE PROCEDURE WAS REVISED AND THE I NS T RUMEN T RE SE T.
KEYWORDS REACIOR. HwM SF AILURE 3 PROCEDURES AND MA NUALS SRE ACT DR PROTECTION SYSTEM 8 INSTRUMENT CALIGRAllDN3 INSTRUMENT. SWITCHIREv3Ew3 FAILURE. ADMI NIS TH AT IVE CONT ROL 3 VERMONT Y ANK E E ( swr ) $ M AT HE M ATICAL TRE A T MENT 3
()
SET POINT 8SENSDRS. LEVEL
()
I 27/6/0000003-0000706//
129
$ ()
ACCES$1DN NO.
002010 033 TITLE SET POINT DHIFT IN REACTOR VESSEL LE VEL SWITCH AT FI12 PATRICK fg CORPAUTH NSAGARA MOHAWK POWER CDRP.,
N.V.
DATE
$9FS TYPE O
()
MEMO 2 PAGES. LETTER ulTH ADR 7S-60 TO NRC DIREC1DR ATE OF LICENSING. JUNE 26. 3 9 F5. DOCKET S0-333.
()
TYPE--owr.
MFG--G.E..
AE--STONE & WEDSTER AVAll AVAILADIllTY - NRC PUBLIC DOCUMENT ROOM. IFIF H STREET. W A SH ING TON. D. C.
20S4$ 408 CENTS /PAGE --
$2.003
()
C A T EGORY 8700003090000 r)
EDITION 0063 CORP CUDE NMP CDUNTRY A
(}
AOSTRACT CAUSE - I NS T RU MEN T DRIF T.
DURING T ESTING OF T HE 4 REAC1DR VESSEL LEVEL SWITCHES WHILE THE UNIT wAS IN
,}
COLD SHUTDOWN. UNE SulTCH T R I PPE.D AT 12.1 INCHES WHICH IS LESS IHAN 1HE 12.S INCH LIMIT.
THE D AR T UN MODEL 288 A SwliCH WAS RECALIBRATED.
KEYWORDS REACTOH. BwH ;F AILURE 5HE A CIOR PROTECTION SYSTEMtFITZPATRICK (DwR)3 INSTRUMENT C A LI BR A T I ON tF A ILU RE.
(}
INST kUMENT 3 3NS TRUMEN T. SwitCHITEST. SYSTEM OPERAnlLITYSSET PO I N T 8 DR I F T 3 PRE S SUR E VE SS ELS 8 SENSORS. LEWEL
}
27/6/0000001-0000206//
130 ACCESSSON NO.
0020103697
()
TITLE SET POINT DH 3 F T IN NEACTUR WATER LEVEL SENSDRS AT NINE MILE POINT
{g CORPAUTH N I A GAR A MOH A WK POWEH CORP.,
N.Y.
DATE 89FS TYPE O
()
MEMO 2 PAGES. LE T TER WITH ADH 75-86 TO DIR. OF RE GULA T DH Y OPEHATIDNS. REGION 1.
JULY 2.
1975. DOCKET S0-220.
gg TYPE -UwR.
MFG-G.E.. AE-NI AGAR A MOHAWK AVAIL AVAILABILITY - NR C PUUL I C DOCUME N T HouM. 1787 H STREEY. WASHINGTON. D. C.
20S45 (08 CENTS /PAGE --
MINIMUM CHARGE S2.00)
()
CATEGDRY 1T00008090000
()
EDR180N 0063 CORP CODE NMP COUNTRY A
g}
AUSTRACT CAUSE - INSTRUMENT DRIF T.
DUHING RDutRNE TESTING WHILE THE REACTOR WAS AT 924 POWER. 2 NEACIDR W ATER eg LO-LO-LO LEVEL SENSUR$ WERE FOUND OUT OF CALIGNATION.
THEY WERE 3 AND 4.5 INCHES. R E SPE C T I VE LY. BELOW THC 7 FT St INCH LIMIT.
THE C AU SE WAS MINUR SET PORMT DHIFT.
THE INS T RUMENT S WERE REC AL IBR A T ED.
KLYWORDS MEACTOR. OwREFAILUHE8 HINE MILE POINT I towH33HLAC1DR PROTECTION SY STEM 3 INS TRUMEN T CALEBRATIONtFAILURE.
g}
INSikUMEN f 3 E NS TRUMEN T. SWITCHiiEST. SYSTEM DPERABILlfY35Et PO I N T 8 DR IF T 8 PRE SSURE VE SSELS 3 SE NSON S. LEVEL
{g 27/6/0000001-0000206//
131 ACCESSION NO.
0020303672
(}
TIELE SCHAM OISCH ANGE VOLUME LEVEL SulTCH FAILS AT FITZPA1 RICK
(
{g CORPAUTH NIAGARA MOHAWK POWEN CURP.,
N.Y.
DATE 1975 TYPE O
{"}
MEMO 2 PAGES. LETTER ulTH AD 75-54 TO NRC D IRECTORATE OF LI CE NS ING. JUNE 17. 1975. DOCKET 50-333. T YPE --BWR.
()
MF G--G.E.. AE--STONE L WEUSTER AVAll AVAILAGILITY - NRC PUHLIC DOCUMENT ROOM. ITIF H STREE T.
WASHING 1DN. D.
C.
20545 808 CENTS /PAGE --
/
MINIMUM CHAR GE S2.003
()
CATEGORY 3700003090000
/}
EDITION 0068 i
C)
C)
C)
GD 27/6/0000005-0000206//
133 CONTINUATION 3 PAGE
$4 ODE NMP g
rg m..
COUN Y
A
. Z ii ACT CAUSE - E X CE SS FRICTIDN IN MECHANISM.
AFTER A HEACTOR SCRAM. 8 OF THE 4 SCHAM DISCHARGE VOLUME DISCHARGE LEVE L T H I P S D ID NO T FUNC T ION UNTIL A HOUR AFTER THE SER AM.
T W.
Sw3TCH MECHANISM HAD ABOVE
()
NONMAL FHICTION IN T HE PIN DPEHATOR M AKING SLUGGISH OPERATION.
ADJUST MEN TS WERE MADE TO LESSEN
()
FRICllDN.
T HE N THE SWITCH FUNCTIONED PROPERLY.
KEYWORDS NtACTON. owr $F AILURE SHLACIOR PROTECTION SYS TEM IF I T 2P ATR ICK (BwR93 FAILURE. INSTRUMENT 8 INSTRUMENT. SWITCH 3 F H I CT I ON E SENSOHS. LE VEL h
27/6/0000001-0000206//
132 l
ACCESSION NO.
0020503067
)
(,
LacLwumt aswwww6wwwwww E]ITION CCol e
o 27/6/0000005-0000206//
138 CONTINUATION 1 PAGE 54 UDE NMP
/}
fg w-I CO Y
A T 1 ?--
CT CAUSE - E X CE SS FRICTION IN MECHANISM.
AFTER A REACTON SCRAM. I OF THE 4 SCRAM DISCHARGE VOLuteE DISCHARGE LEVEL THIPS DID NO T FUNC T IUf6 UNTIL A HOUR AFTER THE SURAM.
Ttei SwlTCH MECHANISM HAD A80VE Q
NONMAL FR I C T 10P4 IN ftE. PIN OPEHATOR M AKING SLUGGISH OPERATION.
ADJUSTMEN TS WERE M ADE TO LESSEN q
FRICIION.
T HE N ftti SWI TCH FUNCilONED PROPERLY.
KEYWORDS REACTOR. DwA3 FAILURE 5HEACTOR PROTECTION SYSTEM 8 FIT 2 PATRICK ( SWR ) 8 F A ILUR E. INSTRUMENT 11NSTRUMENI. Sw3ICH3 FR I C T I ON 5 SENSORS. LE VEL I
2F/6/0000003-0000206//
532 ACCESSION NO.
0020303067 TITLE ALL IESTS ON RPV PRESSURE SWIT CHES NOT PERFUHMED AT HATCH I Q
CORPAUTH GEORGIA POWER COMPANY Q
DATE 1975 TYPE O
ME MO 3 PAGES. LETTER WITH AD 75-38 10 NRC DIR, OF REGULATORY UPER AT IONS. REGION 2. MAY 32. 19FS. DOCKET Q
50-328. TYPE--HwR. MFG-G.E..
AE -SS I Qj AVAIL AVAILAOILITY - NHC PUBLIC DOCUMENT ROOM. 1717 H STREET. WASHINGTON. D.
C.
20545 408 CENTS /PAGE -
f MINIMUM CHARCE S2.OOI i
CATEGORY 1700005090000 l
Q EDITION 0060 g4 CORP CODE GPC COUNTRY A
I ADSTRACT CAUSE - PROCEDUR AL DEF IC IENCV.
WHILE THE UNIT WAS OPERATING AT SAE POWER. IT WAS FOUND THAT PART OF q I' Q
THE FUNCTIONAL TEST PROCEDURE FOR RPS RPV SWITCHES HAD NOT DEEN PERFORMED.
THE RCQUIREMENT IS TO PENTUNG RPV LE VE L AND OBSERVE THAT Trei LEVEL Sul TCHES TRACK THE PERTURBATION.
THIS REQUIREMENT W AS l
IN ADVE NTEN TLY NOT INCLUDED IN THE TEST PROCEDURE S.
PHOCEDURES WERE MODIFIED TO INCLUDE THIS.
i KE YwORDS HEACTOH. OwHiFAILUHE3PHOCEDURES AND MANUALS 5HEACTUR PROIECTION SYSTEM 8 TESTING 8 INSTRUMENT. SulTCH3 Q
FAILUkE. ADMINISTRATIVE CONTROL 8 HATCH I t uwst l 5 PHESSUR E VE SSELS E SEN SOR S.
LE VEL gj 27/6/0000005-0000206//
133 ACCESSION NO.
0020302655 Q
illLE SET POINT DRIFT IN LEVEL SulTCH AT NINE MILE POINT gj CONPAUTH NIAGARA MOHAWK POWER CONP..
N.Y.
DATE 19FS TYPE O
Q MEMO 2 PAGE S. LCT TER WITH AOR 75-06 TO NRC DIR. OF L4EGULATORY OPERATIONS. REGION 1. MAY 6.
1975. DOCKET Q
50-220. T Y PE -UwH. seF G-G.E., AE-NI AGARA MOHAWK AVAIL AVAILABILITY - NHC PUBLIC DOCUMENT ROOM. ITIF H STREET. WASHINGTON. D. C.
20545 808 CENTS /PAGE -
MINIMUM CHARGE s2.OO)
Q CATEGORY 1700008090000 i),
EDITION 0060 COHP CG)E NMP COUNTRY A
{
A3STRACT CAUSE - B NS T RUMEN T DRIFI.
DURING TESTING WHILE THE UNIT WAS OPERATING AT 942 POWER. THE REACTOR LEVE L Q
LO-LO-LO SWI TCH WAS FOUND TO ACTUAIE AT 838 INCHELS OF WAIER R A T HE R IHAN THE REOUIRED 128.5 INCHES.
THE INSTRUMENT WAS RECALIBRATED.
THE CAUSE WAS INSIRUMEN T DRIFT.
KEYWORDS REACTOR. DWH iF A ILUHti 3 NI NE MILE POINT I (BwR)iREACTOR PROIECTION SYSIEMilNS TRUMENT CALIBRAT IONIF AILURE.
{
INSTRUMENI8BNSTRusstNT. SulTCH8 TEST. SYSTEM OPERAS ILI T Y iSE T POINT 5DRIF T 8 SENSONS. LEVE L Q
27/6/0000001-0000206//
134 ACCESSION NO.
0020302496 Q
TITLE SCHAM DISCHARGE VOLUME LEVEL Sw!TCH FAILS TO OPERATE AT ANNOLD G
CORPAUTH IOWA ELECTRIC LIGHT G POWER CO DATE 1975 TYPE O
Q MEMO 2 PAGE S. LETTER WITH AOR F5-20 TO NRC OFFICL OF INSPECTION & ENFORCEMENT. REGION 3. APRIL 28. 4975.
Q DOCKET 50-338. T YPE--HwR. MFG--G.E..
AE-COMMONwE ALTH ASSOC.
I O
O O
27/6/0000001-0000206//
134 CimTINuATION 8 PAGE 55 Q
AVAIL AVAILABILITY - NHC PUOLIC DOCUMENT HUOM. 1787 ff STREET. WASHINGTON. D.
C.
20545 (00 CE N T S/P AGE -
Q MINIMUM CHAHGE S2.OO)
CATEGORY 1700008090000 EDITION 0060 Q
CORP CODE UGH Q
COUNIRY A
AUSTRACT CAUSE - UNMNOwPf.
DURING TESTING UF THE DISCHARGE VOLUME HIGH WATER LEVEL. A LEVEL SWITCH DID NOT OPERATE.
IT HAD SIUCK IN THE UN TH I PPtiD CONDITStM.
THE CAUSE IS UNKNOWN.
THE SWITCH EACLUDING THE FLOAT RESEHVOIH WAS CLEANCD AND LUBRICATED.
ANUTHER L E VE L SWITCH FAILED THE F OLLOWI NG D A Y.
INSPECTION Q(
I g
]
L INDICATED A PHUG ABLE CAUSE WAS A PICCL OF PLASitC IN I Hti FLUAT 54ESERVOIR THAT WE DGED H E f utLN THE FLOAT Q SKG WA16*
m
g, e.veu a c a us...
.6
..... awa... - ew.
.. ~. -.... _..
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134 CONTINUAIION I PAGE SS
(}
AVAIL AVAILABILITY - NRC PUOLIC DOCUMENT ROOM, 1787 H SIREET, WASHINGTON.
D.
C.
20545 (08 CENTS /PAGE==
() [
I MINIMUM CHARGE S2.OOD CATEGORY 3700003090000 EDITEDN 0060 (1
CDRP CODE UGN f) i l
COUNTRY A
l AHSTRACT CAUSE - UNNNOWN.
DURING TESTING OF THE DISCHARGE VDLUME HIGH WATER LEVEL, A LEVEL SWITCH DID NOT OPE R A T E.
IT HAD STUCK IN THE UNTRIPPED CONDITION.
1HE CAUSE IS UNKNOWN.
THE SuliCH EXCLUDING THE (f"""
FLOAT RE SERVOI R WAS LLEANED AND LUBRICATED.
A NO I HER LEVEL SWITCI: FAILED T HE F OLLO WI NG D AY.
I NSPE C T E DN 8) 1 INDICATED A PROO ABLE CAUSE WAS A PIECE OF PLASitC IN THE FLOAT RESERVOIR THAT WEDGED BETWEEN THE F LOA T AND THE WALL.
KLYWORDS REACTORe UWM8F AILURE tINSTRUMENT C ALIBR A T ION 8 F A ILURE, I NSTRUMENT 3 CRUDi ! NS TR UMEN T. SWITCHSTEST. SYSTEM
()
DPER An lLI T Y 3 AR NOLD (DWR)iSENSORS. LEVELICONT ROL NUD DRIVES g) 27/6/0000005-0000206//
135 ACCESSION NO.
0020503868
()
TITLE SETPOINT ORIFT IN LEVEL SWITCH AT HATCH I
}
CORPAUTH GEORGIA PO WE R COMP AN Y t
DATE 1975 f*
TYPE O
()
MEMO 2 PAGES, LET TER TO NRC DIRECTORATE OF R EGULA TORY DPERATIONS. REGION 2, M AR DI 26e 1975. DOCKET 50-321, i) I TYPE--der.
MFG--G.E.,
A E --S S I AVAIL AVAILAHILITY - NRC DUBLIC DOCUMLNT ROOMe 1717 H STREET, WASHINGION, D.
C.
20545 (OS CENTS /PAGE --
$2.00)
()
CATEGDRY 8700003090000 gg,
EDITION 0059 CORP CODE GPC COUNTRY A
()
AHSTRACT CAUSC - INS T RU ME N T DRIFT.
OURING TESTING OF T HE RPS. A REACTOR PRESSURE VESSEL LEVEL SWITCH OPERATED
}'
Ai 5 INCHES WHICH IS HELOW THE 82.5 INCH LIMIT.
THE D AR f DN MODEL 280A LEVEL INDICATING SWITCH W AS HECALIDRATED.
NO PRDULEMS WERE FOUND WITH THE SWITCH.
}
KEYWORDS REAC10Re OWR 8 FAILURE 3 REACTOR PROTECTIDN SYSTEM 8 INSTRUMENT C AL I BR AT I DN 8F A ILURE, I NSTRUMENT $ INSTRUMENT e 3
j!
()
SWITCHiiEST. SYSTEM UPtRADILITY3 SET POINT 8HAICH I ( DWM ) iDR I F T 3 PRE SSURE VES SELS 8 SENSORS, LEVEL 27/6/0000003-0000206//
136 ACCESSION NO.
0020101072
({-
TI1LE SEIPOINT DRIFT IN MAIN STEAM LINE R ADI A T ION MONITORS AT DRESDEN 3 gg CORPAUTH COMMONWEALTH EDISON COMPANY. ILLINOIS DATE 8975 TYPE O
(y ME MO I PAGE. LETIER TD NRC DIRECTORATE OF REGULATORY OPERAflDNS, REGION 3. M ARC H 2 7.
8975. DOCKET 50-249 gg I Y PE-B WR,
MFG--G.E.,
AE-SG T & LUNDY AVAIL AV A I LABILI T Y - NRC PUBLIC DOCUMENT RDOMe 1787 H STREET WASHINGTIN. D.
C.
20545 (OS CEN T S /P AGE --
MINIMUM CHARGE
$2 00)
()
CATEGORY 1F00008090000 q)
EDITION 0059 CORP CODE DRS COUNTRY A
{}
AUSTRACT CAUSE - I NS T RUME N T DRIFT.
DURING THE WEEKLY TRIP CHECK OF THE MAIN STEAM LINE RADIATIDN MONSTORS. UNE
{g TR8PPED AT 5600 CPS AND ANOT HER AT 8550 CPS.
THE LIMIT IS 1500 CPS.
ERRORS CAN DE MADE IN SET T ING DUE TO THE MONITOR CONTINUING UPSCALE AFIER THE TRIP OCCURS.
ALSO. THE SE IPO S M T IS 1500 CPS WHICH DOES NOT ALLOW FOR AN Y ORROR.
THE ZERO HAD SHIFTED ON BO TH INSTRUMENTS. DOTH WERE RE C AL IBR A T ED.
THE SE IPO INI
()
WILL BE LOWERED.
()
KEYWORDS REACTOR. BWR IF AILURE 3 REACTOR PROTECTION SYSTE48DRESDEN 3 ( BWR ) 3 INS IRUME NT C ALIUR AT ION 8 INST RUMENT.
SWITCH 3 TEST, SYSTEM DPER AD E L E T Y & F A I LURE e ADMINISTRATIVE CONTROL 8 SET POINT 8 DRIFT 3RADIAllDN MONITORS
()
()
()
C) 27/6/0000005-0000206//
137 PAGE S6 I
()
ACCESSION NO.
00Z01003F4 gg j TRILE MSIV NOT FULL OPEN S CR AM MALFUNCTEDN AT DRESDEN J CDRPAUTH COMMONWEALTH E DI SON LOMP AN Y.
ILLINOIS DATE 1975
(}
TYPE O
(g NEMO I PAGE. LE T IER TO DIRECTORATE OF RE GUL AIOR Y OPERATEDNS. REGION 3. MARCH 7.
1975. DOCKET 50-249 I
TYPE--8WR, MF G--G. E.. AE--SGT L LU NDY AVAIL AVAILABILITY - NRC PUBLIC DOCUMENT ROOMe 1717 H STREET. WASHINGTONe D.
C.
20545 (OS CE N T S /P AGE --
$2.00)
{j f[
h ()
z CATEGDRY 1700008120000 1.
. MMC MM.
L
1 V i
I O
9 O
0 27/6/0000003-0000206//
337 PAGE 56 o
ACCESSION NO.
00Z08003F4
/)
I T I fli MSIV NOT F ULL OPE N SCRAM MALFUNCIION AT DRESDE N 3 I
CORPAUTH COMMONWEALTH EDISON COMPANY. ILLINOIS OATE 1975 l Q TYPE O
t}
MEMO I PAGE. LE T T ER TO DIRECTORATE OF REGULATORY OPER A TIONS. REGION 3.
MARCH 7.
3975. DOCKET S0-249 e T YPE-BWR, M F G-G.E.. AE-SGT & LUNOY i
AVAIL AVAILABILITY - NRC PUBLIC DOCUMENT ROOM. 1717 H STREET. WASHINGTON. D.
C.
20545 508 CENTS /PAGE -
Q MINIMUM CHARGE S2 00)
Q CATEGORY 17U0003120000 EDITION 0059 CORP CODE DRS Q
COUNTRY A
p}
ABSTR ACT CAUSE - FAUL1Y LIMlf SWITCH.
WITH THE UNIT AT 1249 MWT. A REL AY F AILED TO DE-ENERGIZE DURING THE MSiv NOT F ULL OPE N SCRAM TEST OF A MSiv.
THE APPARENT CAUSE WAS A FAULTY LINE SWITCH ON THE VALVE.
NO PROBLEMS WERE FOUND DURING THE INSPECTION.
ALL COMPONENTS WORKED PROPERLY.
THE MSiv WAS RETESTED Q
SaTISFACTORELY.
g KEYWORDS RkAC10R. BWR8FAILURElREAC10R PROVECTION SYSTEM;DRESOLN 3 (BWR)3 INSTRUMENT. SWITCHITEST. SYSTEM OPERABILITY 8 VALVES 8 RELAYS Q
27/6/0000005-0000206//
138 g
ACCESSION NO.
00Z0800239 TITLE ROO BLOCK MONITOR FAILS TO PROVIDE A BLOCK FUNCTION AT FIT 2 PATRICK COkPAUIH NIAGARA MOHAWK POWER CORP..
N.Y.
Q DATE 5975 g
TYPE O
MEMO 2 PAGES. LETTER WITH AO REPORT 75/I8 TO NRC DIRECTORATE OF LICENSING. FEDRUARY 20. 1975. DOCKET 50-333.
TYPE--BWR. MF G-G. E., AE-SIONE G WEBSIER Q
AVAIL AVAILABILITY - NHC PUBLIC DOCUMENT ROOM. 3717 H STREET. WASHINGTON. D.
C.
20545. (08 CENTS /PAGE -
g MINIMUM LHARGE S2.00)
CATEGORY 8700003090000 EDITION 0059 O
CORP CODE NMP
,}
COUNTRY A
ABSTRACT CAUSE - DURNPD CONTACT.
DUR ING RBM 1ESTING. ROM B FAILED TO PROVIDE A R[D BLOCK FUNCTION ON A HI-HI SIGNAL DUE TO A DURNED CONTACT IN TM ROD-SELECT ON-OFF POWER SUPPLY.
THE CONTACT W AS JUMPERED.
THE Q
SWITCH CONTACT WILL DE REPLACED.
g-KEYWORUS REACTOR. OWREFAILUREiFIT2 PATRICK ( BWR l 81NS T RUMEN T. CON TROL i RE AC TOR CONTROLIFAILURE. INSTRUMENTI I N S I RUME N I. SWliCH; REACTOR STARIUP EXPERIENCEtiESI. SYSTEM OPER ASILITYiCONTROL ROD DRIVES Q
27/6/0000001-0000206//
139
)
ACCESSION No.
0020099259 TITLE SEIPOINI ORIFT IN APRM AT FITZPATRICK CORPAUTH NIAGARA MOHAWK POWER CORPORATION. NEW YORK Q
OATE 59FS Q,
TYPE O
MEMO 2 P AGE S. LE11ER WITH AO REPORT 75/S TO DIRECTORATE OF LICENSING (AEC). JANUARY 9 197S. OOCKET S0-333.
T YPE-0WR, MF G-G.E.. AE-S T ONE G WEBSTER G
AVAIL AVAILAHILITY - NRC PUBLIC DOCUMENT ROOM. 3717 11 STREET. WASHINGTON. D.
C.
20545. (08 CENIS/PAGE -
Q MINIMUM CHARGE S2.00)
CATEGORY 1700003090000 EDITION 0058 O
CORP CODE NMP Q
COUNTRY A
AGSTRACT CAUSE - INSTRUMENT DRIFT.
DURING TESTING WHILE THE Rt. ACTOR WAS IN HOT STAND 8Y. APRM C ACTUATED AT 2 1%
OF SCALE WHICH IS BELOW THE 2.5% LIMIT.
IT WAS IMMEDI ATELY RESET TO 2.64.
T HE CA USE W A S INSTRUMENT Q
DRIFT.
g KEYWORDS REACIOR. BWR EF AILURE 8 REACTOR PROIECIION SYSTEMIFITZPATRICK ( HWR ) il NS TRUMEN T CALIBR AT ION 8F AILURE.
G O
O O
27/6/0000005-0000206//
139 CONTINUAYlON 8 PAGE 57 Q
INS T RUMEN T 8 INS TRUMEN T. SWI T CH;RE AC T OR STARTUP EXPERIENCESTEST. SYSTEM OPERABILITYiRNSTRUMENT. POWER Q
RANGEISET POINilDRIFT 27/6/0000003-0000206//
14 0 Q
ACCESSION NO.
0020099097 Q
TITLE REPLACEMENT LEVE L SW ITCH F A ILS DUR ING HYORO TEST AT COOPER CUMPAUTH NEOR ASKA PUBLI C POwE R DESIRECT DATE 1975 O
TYPE O
g MEMO I PAGE. LE T T ER TO DIREC10HAVE OF REGULATORY OPERATIONS. RE G I ON 4 (AEC). JANUARY 8. 1975. DOCKET S0-298.\\
Q T YPLhMF6-@eEgo A3c=GUHNQ RQi3
\\
o
s.
e KEYuuRDS RECCTOR. CwR 8F AILURE iKE ACTOR PROTECTION SYST EM iF I T ZP A T R I CO: (8 2Q li R NS TIUMEN T C ALIBR AT ION 8F AILURE e e
O O
O O
27/6/0000005-0000206//
139 CON T IP80 Ai !ON 3 PAGE 57 INSTRUMENiilNSTRUMENT. SwliCHiREACTOH STARTUP EXPER IENCE 8 TE ST. SYSTEM OPER AB I L I T Y 8 I NSTRUM EN T. power
/)
Q
- RAN GE 8 SET POINiiDHIFT i
27/6/0000005-0000206//
I40 Q
ACCESSION NO.
00 ZOO 9V097 Q
TITLE REPLACEMENT LEVE L Sw liCH FA ILS DURING HYDRO 1EST AT COOPER I
CUHPAUTH NCOHASKA PUt5LIC PUwER DISTR ICI DATE 1975 Q
TYPE O
Q MEMO I PAGE. l_E T T ER TO DifeECTORATE OF REGULATORY OPERATIONS. RE G ION 4 (AEC). JANUARY 8.
19F5. DDCKET S0-298 T YPt --tswR. se F G -G. E.. AE-O Upte h & ROE AVAll AVAILABILITY - NRC PUOLIC DOCUMENT 5400 M. 1787 H STREEi. WASHINGTON, D.
C.
20S45. (OS CENTS /P AGE -
{
MINIMUM CHARGE S2.003 Q
CATEGORY 1700005090000 EDIIION 0058 CORP CODE NPP Q
CDO NIR Y A
.}
- i Atts t R ACT CAUSE - wE LD F A I LURE. DURING A HYDROSTATIC it'S1 ON TE SENSING LINE PIPING WELDS REOUIRED FOR
]
INSTALLAllON OF MAGNETROL LEVEL SufTCHES ON THE CONTROL ROD DRI VE SCRAM DISCHARGE VOLU ME. A SUDDEN DECHEASE IN TEST PRESSURE WAS NOTED AT 1750 PSIG.
AFTER THAT. THE LEVEL SWITCH WOULD NOT ASSE.
IT WAS I
REPLACED.
T M. SEAL WELDED SI AINLESS SIEEL SPHERICAL FLOAT HAD RUPTUNED AT THE CIRCULAR SEAL WELD.
THE
]
Q
]
I RUPTURE EX TENDED FOR JOE OF T HL LE NG TH OF THE WELD.
THE AS SEMBLY WILL BE RETURNED TO THE VENDOR FOR ANALYSIS.
THE OlHER S SWITCHEb WERE HYDROSTATIC TESILD S AT ISF ACTORILY.
KEYWORDS REACIOH. OwRIFAILUREi1EST. PROOF 8wELDSIFAILURE. INSIRUMENii3NSTRUMENT. Swl TCH8 TE ST. SYSTEM OPERABILITY 8 Q
COOPER (DwR)$ INSTALLATION $$ENSONS. LEVELiCONTROL RUO DRIVES
.}
27/6/0000005-0000206//
84I ACCESSION NO.
00Z0098593 (s
TITLE SEIPOINT ORIFT IN APRM MONITORING SYSTEM AT F I TZP A TR I CK q
COHPAUTH NIAGARA MOHAWK POWER CONP., SYHACUSE.
N.Y.
DATE 1974 TYPE O
Q MEMO 4 PAGES. LETTER wlTH ASNURMAL OCCURRENCE REPOR T 74-38 TO DIRECTORATE OF LI CE NSING (AEC). DEC. 23. 3974 Q
OOCKET 50-J3J. TYPE--OwH.
MFG--G.E.,
AE--SIONE E WEBSTER AVAIL AVAILADILITY - NRC PUBLIC DOCUMENT ROOM. 1787 H STREEi. WASHINGTON. D.
C.
20S45. (08 CENTS /PAGE -
MINIMUM CHARGE s2.003 Q
CATEGORY 1700008090000
.}
EDITION 0058 CORP CODE NMP j
COUNTRY A
O*
ABSTRACT CAUSE - COMPONENT FAILUHE.
DURING TESTING WITH THE UNIT IN COLD SHUiDOWN. APRM D WOULD NO1 ALARM WHEN
.}
LESS THAN THL REQUlf4LO NUMBER (II) UF LPNM INPUTS wCRE INOPERATIVE.
SEIPUINT DRIFT DUE TO FAULTY COMPONENT IS SUSPECTEO.
TROUDLE SHOOTING IS I N 5*ROGRESS.
KEYWORDS HEACTOR. owr IF AILURE iHE ACT OR PROTECTION SYSTEM 8FITZPAINICK I BwR l i lNS TRUMEN T CALIBRATEDNitMSTRUMENT.
l;
.}f Q
SullCHtHLACION SIARIUP EXPERIENCEiTEST. SYS TEM OPEN A S ILI T Yi lNS T RUMENT. POWER R ANGEiSE T POINT 8 INSTRUMENT. ALARM EDH IF T I
27/6/0000003-0000206//
142 Q
ACCESSION NO.
00Z00988H8
}
TRILE SCHAM DI5 CHARGE VOLUME HIGH LEVEL SwlTCH F AILS Al VERMONT YANKEE COHPAUTH VEf4 MON I YANKEE POWEN COMPANY k
DATE 1974 TYPE O
.}
MEMO 2 PAGES. ADNORMAL OCCURRENCL $4EPOR T S0-273/74-15. DECEMUER 12. 19F4. DOCKE T S0-271. T YPE-tt wR.
MFG--G.E..
AE-EU ASCO AV AVAILABILITY - NRC PUBLIC DOCUMENT ROUM, 1787 H SihE E l. WASHINGTON. D.
C.
20S45. (08 CENTS /PAGE -
(j MINIMUM CHARGE S2.00)
()
ONY l700003090000 0
9 0
9 27/6/0000005-0000206//
142 CONilNUATIUM I P AGE
$8 g
EDITION 0058 g
CORP CODE APZ COUNTRY A
ABSTRACT CAUSE - DEFECT IVL MEHCURY Sw!ICH.
DURING RPS RLSPONSE TIME TESTING wHILE REFUELING. THE SCRAM Q
DISCHARGE V OLU DE HIGH LEVEL SCRAM SulTCH WOULD NOT ACTUATE ITS SCRAM RELAY.
THE MERCURY SWITCH HAD A Q
FISSUHE IN STS E NC A SE ME N T ALLOWING OMIDATION OF THE MERCURY.
THE SwI TCH F AILED IN THE CLOSED POSI T ION.
THE FAULTY SWITCH WAS REPLACEO.
KEYWORDS REACTOR. IlwH 3 F A I LORE. COMPONENTIFAILURE3REAC10R PROTECTION SYbf EMIF law IF AI LURE, INSTRUMENTIINSTRUMENT.
Q SWITCH 8HEFULLINGITEST. SYSEEM OPERABIL11YiVEHMONI YANKEE (DwRliSENSORS. LE VEL y
27/6/0o00o01-0000206//
I A si
Q MINIMUM CHANGt 92.003 ORY I70D008090039
/
{
e e
C 9
q Q
27/6/0000005-0000206//
I42 CONTINUA *10N I
PAGE 58
^
Q g.
EDITION 0058 CORP CODE APZ COUNTRY A
ABSTRACT CAUSE - DEFECTIVL ME f4 CUR Y SWITCH.
(>URING RPS RESPONSE TIMt TESTING WHILE REFUELING. THE SCR A M Q
D I SC HAR GE V OLU ME HIGH LEVEL SCHAM SWI T CH WOULD NO T A C T U A TE ITS SCR AM R ELAY.
THE MERCURY SWITCH HAD A q
FESSURE IN I TS ENC ASE MEN T ALLOWING OAIDATION OF THE MERCURY.
THE SWI TCH F A ILED IN THE CLOSED POSI T ION.
THE FAULTY SWITCH WAS REPLACED.
K E Y WOROS REACTOR. D WR 8F AI LURE. COMPONEN T 8 F AILURE 3RE ACTOR PROTECTIIDI SYST EM IF LA W $ F A I LURE. INSTRUMENT 3tNSTRUMENT.
Q SWITCH:REFUELINGITEST. SYSIEM OPERABILITY 3 VERMONT YANKEE IBWR); SENSORS. LE VEL
/)
27/6/0000005-0000206//
143 ACCESSION NO.
0020098178 Q
TITLC SE TPOINT DRIF T IN LE VEL SWITCH AT FITZPATRICK
,}
CORPAUTH NIAGARA MOHAWK POWER CORP., SYRACUSE.
N.Y.
DATE 1974 TYPE O
Q ME MO 2 PAGES. LETTER WITH ABNOR M AL OCCURRENCE RE POR T F4-17 TO DIRECTORATE OF LI CENSING (AEC). DEC. 5.
1974
]
DOCKET 50-333. TYPL--OWR. M F G-G. E., AE--STONE G WEBSTER AVAIL AVAILANELITY - NRC PUBLIC DOCUMENT ROOMe 1787 H STREET. WASHINGTON. D. C.
20545. (08 CENTS /PAGE -
MINIMUM CHARGE
$2.003 Q
CATEGORY 8700003090000
.)
EDITION 0058 CORP CLDE NMP COUNTRY A
Q ABSTRACT CAUSE - INSTRUMEN T ORIF T.
DURING TESTING. I OF THE 4 REACTOR H I-4.0 W A T ER LEVE L SW I T CHE S ACTUATED AT g
12.0 INCHE S. WHICH IS BELOW THE 12.5 INCH LIMIT.
THE APPARENT CAUSE WAS INSTRUMENT ORIFi.
THE BANTON MODEL NO. 288A SWI TCH W AS RECALIBR ATED TO 13 2 INCHES.
KEYWORDS REACIOR. BWRIFAILUREIREACTOR PROTECTION SYSTEM FITZPATRICK E DWR ) 3 I NS TRUMEN T CALIBR ATIONtF AILURE.
Q INSTRUMENT 33NSTRUMENie SWITCH 8HEACTOR STARTUP EXPERIENCE 81EST, SYSTEM OPER AB It. I T Y I SE T POINTIDRIFT3
<)
SENSURS, LEVEL 27/6/0000005-0000206//
I44 Q
ACCE SSION NO.
0020097498
.}
TITLE APRM SCRAM SET POINT HIGH AT ORESDEN 2 CORPAUTH COMMONWEALTH EDI SON COMPANY. ILLINOIS DATE 19 T4 Q
TYPE O
.")
MEMO 2 PAGES. LETTER TO DIRECTORATE OF REGut. ATORY OPER Af tl7tS EAEC3. REGION III. NOVEMBER 82. 39T4 DOCK E T 50-237. T YPE-UWR. MFG-G.E..
AE --S G I G LUNOY AVAIL AV A ILA BIL I T Y - NRC PUOL IC DOCUMENT ROOM. 3757 H STREET. WASHINGTON. D. C.
20545. (08 CENTS /PAGE -
)i
()
MINIMUM CHAR GE
$2.003 CATEGORY IT00003090000 I
EDITSON 0057 CORP CODE DRS Q
COUNTRY A
.}l AUSTRACT CAUSE - UNKNOWN.
DURING APRM RUD BLOCK AND SCRAM FUNCTIONAL TESTING WITH THE MODE SWITCH IN REFUEL.
I AN APRM SCRAM SETPOI NT W AS OHSERVLD TO DE 15.55 INSTEAD OF THE ISE LIMIT.
IT WAS RESET TO 14.52.
THE SPECIFIC CAUSE IS NO T KNOWN.
THE ETER IS MIRROR-SCALE INDICATION AND. TEREFORE. COULD HAVE BEEN
[
()
MISREAD DURING SETTING OR TESTING.
IT IS ALSO POSSIBLE THAT THE INSTRUaENT DR IFTED.
.}
KEYWORDS REACIOR. SWR 8F AILURE 8RE ACTOR PROTECTION SYSTEMtINSTRUMENT CAllHR AT ION 3F AILURE. INSTRUMENT 8DRESDEN 2 (BWR)3 INSTRUMENT. SWITCH 8 REFUELING & TEST. SYSTEM UPER ABILITY 8 8HSTRUMENT. POWER R ANGE t SE T PO IN T 50R E F T
()
27/6/0000001-0000206//
145
() I ACCESSSUN NO.
002009TO64 TITLE RUD BLOCK AND SCRAM SETPOINT DRIFT AT PEACH BOTTOM 3 CORPAUTH PHILADELPHIA ELECTRIC COMPANY. PA.
i Q
DATE 19 T4 Q'
TYPE O
O O
O O
27/6/0000001-0000206//
I45 CONTINUATION I PAGE 59 Q
MEMO 2 PAGES. LETTER TO DIRECTORATE OF l. I CE N S ING (AEC). NOVE MOE R 7.
39T4. DOCKE T 50-276. TYPE -BWR, Q
AVAll AVAILADILITY - NRC PUU. JC DOCUMLNT ROOM. IFIF H STREET. WASHINGTON. D.
C.
20545. (08 CENTS /PAGE -
MINIMUM CHARGE S2.001 Q
CATEGORY 3700005090000 Q
EDITION 005T CORP CODE PEC COUNTRY A
ABSTR ACT CAUSE - COMPONLNT FAILURE.
DUNING A SPOV CHECK OF T HE APR M WITH T HE REACTOR AT 75X PO WE R. THE ROD Q
NQ h.
HC NNLL L
0 BE SE E
HE 1E_Mip THE FLOW 7
i g
(p UAtt aWas TYPE O
q 1
]
C)
()
k
()
27/6/0000001-0000206//
845 CONTINUATION I PAGE 59
()
MEMO 2 PAGES. LETTER TO DIRECTORATE DF L ICE N SING (AEC). NOVEMBE R 7.
1974. DOCKET 50-2F8. TYPE--BWR.
()
MF G-G. E., AL - BECHTEL AVAIL AVAILADILITY - NRC PUOLIC DDCOMENT ROOM. IFl7 H STREET. WASHINGTON. D.
C.
20545. 408 CENTS /PAGE --
MINIMUM CHAR GE S2.00) t
()
CATEGDRY 1700003090000 gg 4 p
EDITION 00SF l
CORP C ODE PEC i,
l J
COUNTRY A
i
()
AOSTRACT CAUSE - COMPONENT F A ILURE.
DURING A SPOT CHECK OF THE APRM WITH T HE REACTOR AT 754 POWER. T HE ROD
() }
BLDCK AND SC R A M SEIPUINTS OF I DF T HC 6 CH ANNELS WERE FOUND TO BE J8E HIGHER THAN THE LIMIT.
THE FLOW CONTROLLED TRIP REFEkENCE CARD HAD FAILEO.
THE CARD W AS REPLACED WITH A SPARE AND CALIBRATED.
I KEYWORDS REACTOR. BWR 3F A I LURE. COMPUNENT IF A I LOR E l lNSTRUMENT C ALIBR A T IONIF A I LURE. INS TRUMEN T 3 3 NS TRUMEN T. SWITCH 3 I'
()
REACTOR ST ARIUP EXPERIENCE 3 TESI. SY ST E M OPERADILITYtSET POINiiPE ACH BOITOM 3 (DWR)tDRIFilELECTRONIC q) I FUNCTION UN I T S 3 CON T R OL R OO DRIVES 27/6/0000003-0000206//
846
(}
ACCESSION NO.
002009T063 (g {
TITLE SEIPOINT DRIFT IN ROD BLOCK SWITCH AT PEACH OOTTOM 3 t
CORPAUTH PHILADELPHIA ELECTRIC COMPANY. PA.
r l
DATE 19 F4 l
g)
EYPE O
gg MEMO 2 PAGES. LETTER TO DIRECTORATE OF LI CE NSING (AEC). N OVE MBE R 4 3974 DOCKE T 50-278 TYPE--BWR.
MF G-G. E., AE--BECHTEL AVAIL AVAILABILITY - NRC PUULIC DOCUMENT ROOM. 8787 H STREET. WASHINGTON. D. C.
20545. 808 CENTS /PAGE --
l g}
MINIMUM CHARGE S2 00) gg i!
CA T ECDR V B700003090000 EDITION 00$F CORP CODE PEC g)
COUNTRY A
{g ABSTRACT 4AUSE - INS T RUMLN T DRIF1.
DURING A TEST OF THE APRM S YSTEM WITH THE REACTOR AT 48E POWER. 1 OF THE 6 RED ULOCK SW I TCHES W AS FOUND WiiH ITS TRIP SE111NG LESS CDNSERVAT IVE THAN THE LIMIT OY 0.9% POWER.
THE CAUSE W AS THOUGHT TO BE INS TRUME N T DRIFT.
THE SWITCH W AS RESE T IMMEDIATELY.
(#T KEYWORDS REACION, BWR tF AILURE ICONTR OL 3 7 NSTRUMEN T CAllBR AT IONIF AILURE. I N S T R UMENi i lN S IRUME NT. SW B TCH IRE ACT OR
}
STARTUP EXPERIENLLITESI. SYSIEM OPERAOILITYiSET POINT IPE ACH DUT IDM J (DWR) 3DR IF I SCONTROL RDO DRI VE S 27/6/0000003-0000206//
14 7 g
ACCESSIW1 NO.
0020096556
}
T I T LE SE IPO I NI ORIFT IN LEVEL SENSON AT COOPER i
i CORPAUTH NLORASKA PUBLIC POWER DISTRICT. BROWNVILLE
,l DATE 1974 g}
TYPE O
}
ME MO 2 PAGES. LETTER TO DIRECTORATE OF REGUL A TOR Y OPER AT I ONS (AEC). REGION IV. OCT. 18. 1974. DDCK E T 50-298.
T YPE --OW R.
MFG--G.E.,
AE --O URN S & R UE AVAIL AVAILADILITY - NRC PUBLIC DOLUMEHI ROOM. 1787 H STREET. WASHINGTON.
D.
C.
20545. (08 CENIS/PAGE --
g h
g}
MINIMUM CHARGE S2.003 gg l CATEGORY 3700003090000 EDITION 005F C DR P C OD E NPP Q
CDONTRY A
g AUSTRACT CAUSE - INS T RU MEN T DRIF T.
DURING TESTING OF T HE REACTOR LOW WATER LEVEL I NS T RUMEN T A T I ON WITH THE t
REACTOR SHUI DUWN. UNE SWITCH TRIPPED AT II IN CHES WHICH I S DELOW THE 12.5 INCH LIMIT.
T HE HARTON MODEL 288A SWI TCH WAS RESET.
{}
KEYWORDS REACIOR. BWR tF AILURE IRE ACTOR PROTECTION SYST EM 3 INSTRUMENT CALIBRATION 3 FAILURE. INSTRUMENiilNSTRUMENT.
()
SWITCH 3 REACTOR STARTUP EXPERIENCE 8 TEST. SYSTEM OPERAISILETY8 COOPER (BWR)iSET POINTEDRIFT8 SENSORS. LEVEL 2 7/6/000000 5 -G000206//
148
()
ACCESSION NO.
00 ZOO 96298
{}
T I T LE POWER RANGE MONITOR TEST CIRCUIT ANDMALY AT ORESDEN I I)
()
()
27/6/0000005-0000206//
()
CORPAUTH COMMONWEALTH EDISON CUMPANY. CHICAGO. ILLINOIS (g
DATE 2974 TYPE O
ME MO 2 P A GE S. LETTER 70 DIRECTORATE OF REGULATORY OPERATIONS (AEC), REGION III. DCT. II. 1974. DOCKET $0-10.
AVAIL AVAILABILITY - NRC PUBLIC DOCUMENT ROOM. 3787 H STREET. WASHINGTON. D.
C.
20545. (08 CENTS /PAGE --
(j
()
T YPE --H WR.
MFG--G.E.,
AE --B E CH T E L MINIMUM CH AR GE S2 00)
CATEGDRY 1700005090000 Q {'
EDITION 0056 4'
CORP CODE DRS OU1W Q
),
t u
astLasaue aw, wwawwwwaso
- t gy
)
TJ TLE POWER RINGE MONITDR TEST CIRCUlf
- f. NOMA LY A T DR ESDE N 1
')f
()
1 <:
27/6/0000005-0000206//
148 CON T INU A T I ON l
('
CORPAUTH COMMDNWEALTH EDISON CDNPANYe CHICAGO. ILLINOIS Q
3 DATE 1974 TYPE O
ME MO 2 P AGE S. LETTER TD DIRECTORATE OF REGULA TOR Y OPERAT E DNS (AEC). REGIDN Ill. OCT. Ele 3974 DOCKET S0-10.
i AVAIL AV A I LAB I L I T Y - NRC PUULIC DOCUMENT ROOM, 8717 H STREEle WASHING 10N. D.
Co 20545, 408 CENTS /PAGE --
()
()
TYPE--BWR, MFG--G.E.,
AE --B E CH IE L MINIMUM CH AR GE S2 00)
CATEGORY 1700008090000 t (}
EDITION 00S6 r)
CORP CODE ORS COUNTRY A
(
ABSTRACT CAUSE - OPERATOR MISUNDERSTANDING.
WHILE PERFORMING NUCLEAR INSTRUMENT ATION CHECK OF F OF THE HIGH FLUX
(}
SCRAM MICR0 MI CRO AM P TRIP POINT SE TTINGS PRIOR 10 PLACING THE RE A CTOR IN THE REFUELING MDDE. THE
()
DPERATOR REPORIED WHAT Ht THOUGHT TC UE AN OUT OF LIMIT READING DN DNE SETTING.
ACTUALLY. THE METER READING WAS NOT THE TRIP POINT SE TT ING BUT A V ALVE AHDVE IT.
ALL OPER A TUR S W I LL R E TRAINED AS TO T HE PROPE R OPERATION DF THL TRIP TEST.
THE ACTUAL SET TING WAS WRIHIN B.IMITS.
(}
KEYWORDS.
REACTOR, BWR40RESOEN I I BWR ) 3F A ILURE tF A ILURE. OPERATOR ERROR 3 REACTOR PRO TE CT ION SYSTEMitMSTRUMENT, e}
SWITCH 87EST. SYSTEM UPERASILITYilNSTRUMENie POWER RANGEISET POINT 2 F/6/00 A000 3 -0000206//
14 9
(}
ACCESSILA NO.
0020095557 f) i TITLE SE1 POINT DRIFT IN LPRM INPUI CDOMT CIRCUIT AT BRO WN S FERRY 2 CORPASTH TE NNES SEE VALLEY AUTHORITY. CHATTANDOGA 8
DATE 1974 i
(}
TYPf.
O
() I MEMO 2 PAGES. LETTER TO DIRECTORATE OF LICENSING (AEC). SE PT EMBER 25. 1974 DOCKET 50-260. T YPE --It WR e AVAIL AVAILAUILITY - NRC PUBLIC DOCUMENT ROOM, 1717 H ST REE T, WASHINGION. D.
C.
20545. (OB CENTS /PAGE --
f MF G--G.E., AE--TVA
()
MINIMUM CHARGE S2 00)
()
CATEGORY 3700005090000 EDRIION 0056 CORP CODE TVA
(}
COUNTRY A
(}
AHSIRACT CAUSE - THERMAL EFFECT.
DURING 1ESTING WITH THE REACTOR AT 354 POWER. FUR 3 OF THE 4 AVERAGE POWER RANGE MONITUR CHANNELSe THE LPRM INPUT COUNT / INOPERATIVE 1 RIP SETTING W AS FOUND TO BE ONE LESS 1HAN THE I
14 LIMIT.
THIS SE1 POINT ERROR IS A T TR I BUT ED TO THERMAL DRIFie A DAD SOLDER CONNEC T ION W AS FOUND IN l
(}
ONE AVERAGING CARD.
THE INSTRUMENTS WERE RESET.
() g KEYWORDS REACTOR. owr iF AILUWE 8 REACTOR PROTECTION SY STEM iitERM AL MECHANIC AL EF F E C T I I NST RUM EN T CALIBRATION 8 i
FAILURE, I NSTRUMLNii R NSTRUMEN T. SW I TCH8REACf 0R ST ARIUP EXPE R I ENCE l l ES T, SYSTEM OPER AS I L I T Y t BROW F6 FERRY 2 (BWR)iSET POINilDR IF T 8CIRCUI T CLO SERS /IN T ERR UP T ER S l
27/6/0000005-0000206//
ISO ACCESSION NO.
0020095546 TITLE SCRAM DISCH ARGE VOLUME LEVEL SWITCH DEFICIENCY AT BR UNSWI CK 1 AND 2
(}
CORPAUTH CAROLINA POWER & LIGHT COMPANY
()
DATE
$974 11PE O
k EEMO 4 P A GE S. LE T IE R WITH ATTACHED REPORT TO DIRECIDRATE OF REGULATORY DPERATIONS (AEC). SEPTEMBER 39, 3974.
(4 DOCKET S0-324/325. T YPE --B WR. MFG--G. E., AE--UE*C g)
AVAIL AVAILABILITY - NRC PUBLIC DOCUMENT ROOM. IFI7 H STREET. WASHINGTDN. D.
C.
20545. E OS CENTS /P AGE --
MINEMUM CHARGE S2.00)
CATEGORY 57000088800008090000
()
EDI1 BON 0056
()
CORP CODE AHV CDONTRY A
AISSI R ACT C AUSE - DE S I GN ERROR.
THE E X IS11NG SELF-E OUALIZING FLOAT-1YPE LEVEL SW ITCHES W ER E F OUND TO BE
()
UNSUITABLE HECAUSE THEY ARE SUBJECT TO SINK ING WHEN THE WATER LEVEL EXCEEDS THE SE LF-EDU ALI Z ING HOLE (g
IN T HE F LO A T SHEFT.
WHEN IHE SCRAM DISCHARGE VOLUME IS DRAINEDe THE PR UB LE M CORRECTS I T SE LF. Slx NEW 4
1 C)
()
()
()
27/6/0000005-0000206//
ISO CDNTINUAllDN I PAGE 61
(}
TYPE LEVEL SWITCHES NOT VULNERADLE TD THE SINKING PHENOMENON HAVE BEEN DRDERED FOR EACH UNIT.
IF
()
STARIUP SHOULD OLC UR DEFORE THE NEW TYPE SWITCH IS INSIALLED, PROCEDURES WILL BE CHANGED 10 ASSURE THAT THE SCRAM DISCHARGE VOLUME IS DR A INED PR ION TO STARTUP.
MEYWORDS REACTOR. 8WR 3F AILURE 3RE ACIDH PROTECTION SYSTEMIINSTRUMENT. SW I T CH $ MOD IF I C A T I ON tF AI LURE. DESIGN ERRORi
(}
DRUNSWBCK I (SWRIttSRUNSWICK 2 (t9 WR ) ICON S T R UC T I ON I SEN S UR S. LEVEL
()
27/6/0000005-0000206//
ISI ACCESSION NO.
002009b429
()
IITLE AP RM FLOW UIAS SCRAM C AL IBR AT I ON ERRUM Ai flRDWNS FERRY l
()
CORPAUTH IENNESSEE VALLEY AU T HOR I T Y e CH A l l AN DOG A g
DATE 1974
Q UNsul8AULL t$tLAuse I et T f,Mt butsJtt t GU hirem A r.4.
m e nu.
.e ek omska uw 6 A ska. w.a e
-.... ~.
....Slll.-NEU IN i P"E FLOAT SHA F T. wKEN THE SCRA4 DISCHARGE VOLUXE IS DAAINEDo TI-E PRWLE?S CORRECT 3 I T SE LF.
h h
C O
27/6/0000005-0000206//
150 CONTINUAi!ON 1 PAGE 68 Q
TYPE LEVEL SWITCHES NOT VULNERADLE TO THE SINKING PHENOMENON HAVE BEEN ORDERED FOR EACH UNIT.
IF 4}
STARTUP SHOULD OCCUR BEFORE THE NEW TYPE SuliCH IS INSTALLED.
PROCEDURES wlLL BE CHANGED TO ASSURE THAT THE SCRAM D I SCH AR GE VOLUME IS DRAINED PRIOR TO STARIUP.
KEYWORDS REACTOR. BWRIFAILUREIREACTOR PROTECTION SYSTEMilNSTRUMENT. Swi f CHiMODIFICA TION 8F AILURE. DESIGN ERROR 8 Q
BRUNSWICK 1 (SuR)iBRUNSwlCK 2 ( O wR ) ICON ST RUC T I ON 8 SENSOR S. LEVEL.
Q 27/6/0000003-0000206//
151 4
ACCESSION NO.
00 ZOO 95429 Il {
181LE AP N 4 FLOW DIAS SCRAM C AL IBR AT ION ERROR AT BROWNS FERRY a Q
CORPAUIH TENNESSEE VALLEY AUI HOR I T Y, CHATTANOOGA i'
DATE 1974 TYPE O
Q MEMU 2 PAGES. LETTER 10 DIRECTORATE OF LICENSING (AEC). SEPoEMDER 20. 1974 DOCKET 50-259. T YP E -R w R.
()
MFG--G.E..
AE-T V A AVAIL AVAILAUILITY - NRC PUBLIC DOCUMENT ROOM. 3717 H STREET. WASHINGTON. D. C.
20545. (08 CENTS /PAGE -
l MINIMUM CHAR GE S2.00)
Q CATEGORY 1700003090000
]
EDIllON 0056 CORP CODE TVA COUNTRY A
Q ABSTR ACT CAUSE - IMPROPER ADJUSTMENT.
DURING A REVIEW OF THE AVES 4 AGE POWER RANGE MONITOR FLOW SIAS CLAIBRATION
.}
DATA. CHANNEL D FLOW BIAS SCRAM 1 RIP WAS FOUND TO EMCEED LIMITS AT 2ERO RECIRCULAT ION FLOW OY LESS THAN 82.
THIS RESULTED FROM THE ORFFICULTY IN ADJUST ING THE CIRCuliRY CAUSED BY AN IMPROPER CALIBRAT ION OF THE FLOW CONTROL TRIP REFERENCE UNI T.
PROCEDURES HAD NOT BEEN FOLLOwED.
THE CIRCuliRY WAS PROPERLY Q
ADJUSIED.
g KE Y WORDS REACTOR. BWR IF AILURE ilNSTRUMENT, NUCLE AR ERE AC10R PROTECTION SYSTEMIINSTRUMENT CALIDRATION8 INSTRUMENT.
SWITCH 8 FAILURE. MAINTENANCE ERROR I HROW N S F ERR Y I (HWR)
Q 27/6/0000003-0000206//
152 g
ALCESSION NO.
00Z0095433 TITLE SCRAM OASCHARGE VOLUME LEVEL SWI TCH MALFUNCT ION AT FIT 2 PATRICK CORPAUTH POWER AU1 HOR I T Y OF THE STATE OF NLw YORK Q
DATE 1974 g
TYPE O
Mt MO 2 PAGES. LETTER TO DIRECTORATE OF REGULATORY OPERATIONS (AEC). AUGUST 29. 3074 DOCKET 50-333.
TYPE--Otfer
- tFG-G.E.,
AE-STONE C wEDSTER Q
AVAIL AVAILABILITY - USAEC PUBIC DOCUMENT ROOM, 8717 H STREET. WASHINGTON. D.C.
20545 48 CENTS /PAGC -
CATEGORY 8F00003B800005090000 EDITION 0056 Q
RP CODE OGO g
NTRY A
AD TRACT CAUSE - DE S I GN E RR OR. A DEFICIENCY IN THE SELF-LOUALIZING FLO AT TYPE LEVE L SWITCH USED IN TSE SCRAM DISCHARGE VOLU MI CONTROL RESULIS IN POSSIBLE SINKING OF TM FLOAT AFTER A SCRAM.
WHEN T HE FLOAI SINKS. THE LEVEL SwtTCHES ARE AUTOMATICALLY R ESE T AND THE ROD BLOCK FUNCT ION IS REMOVED.
WHEN THE g
FANK IS DRAINED. THE SWITCH CLEARS IfSELF.
IF THE F Atet IS NOT DRAINED. THE NECESSARY VOLUME TO ACCOMMOOATE WATER FROM A SUBSEQUENT SCRAM MAY NOT DE AVAILAULE.
tNTIL A REPLACEMENT SWITCH CAN BE OUTAINED. PRUCEDURES WILL DE MODIFIED TO ASSURE THAT THE TANK IS DRAINED PRIOR TO EACH STARTUP.
Q KEYWORDS REACTOR. owr IF AILURE &RE ACTOR PROTECTION SYSTEMiFITZPATRICK (bwR)tINSTRUMENT. SWI T CH 8 MOD IF I CA TION 8
/}
F AILURE. DESIGN ERROR 8 CONS T RUC T I ON & SENSORS. LEVEL 27/6/0000001-0000206//
153 Q
ACCESSION NO.
0020095397 0
TITLE APRM HIGH FLUX TRIP SETTING HIGH AT ARNOLD CGRPAUTH IOWA ELECTRIC LIGHT AND POWER COMPANY DATE 1974 Q
TYPE O
'}
MEMO 3 PAGES. LETTER wlIH At5 NORM AL OCCURRENCE REPOR T 74-36 TO DIRECTORATE OF RE6ULA10RY OPERA 3 IONS (AEC).
]
l O
O O
27/6/0000001-0000206//
153 CONTINUATION I PAGE 62 Q
REGION III. SE P T. 9.
1974. DOCKE T S0-331. T YPE -BWR. MF G-G. E.. AE-COM MON wEA L TH ASSOC.
g AVAIL AVAILABILITY - NRC PUBLIC OUCUMENT ROUM. 1787 H STREET. WASHINGTON. D.
C.
20545. 308 CENTS /PAGE --
MINIMUM CHARGE S2 00)
CATEGORY s700003090000 Q
EDITION 0056 Q
CORP CODE OGN COUNTRY A
ADSTRACT CAUSE - INS TRUMEN T DRIF T. DURING TESTING. THE TRIP SETTING OF APR M CH ANNE L A At 04 RECIRCULATION WAS
(,,
55 5E (LIMIT 54 + -It) AND CHANNEL 0 AT SOE FLOW WAS 91 % ILIMIT 87 * -12).
THE APPARENT CAUSE FOR Q
CHANNEL A WAS INSTRUMENT DRSFT.
IT WAS RESET.
THE CAUSE FOR CHANNEL U WA S THE CIRCUIT LOADING OF M @CW OGU G l@ UGOD OCDUCIrGNQAUD(D3 Go0Rw aS6ED AL T HE TIME X THE OCCURRENCE.
WHE P8 t
1
.. ~
\\.
MEMO 3 PAGES. LETTER UITH ASNURMAL OCCUYRENCE REPOR T 74-3b TO DRIECTORATE OF REGULATORY OPEKAT IONS EAEC).
l i
e o
l l
l C
0 l
27/6/0000001-0000206//
153 CONTINUATION I PAGE 62 j p REGION 813. SE PT.
9.
1974 DOCKET 50-338. 1YPE--BwR. MF G-G.E.. AE -COM MON wEA L TH ASSOC.
Q I
AVAIL A V A I LA B I L I T Y - NRC FUOLIC DDCUMENT ROOM. 3717 H STREET. WASHINGTON. D.
C.
20545. (OS CENTS /P/.GE --
MINIMUM CHARGE S2.00)
CATEGORY 8700005090000 3
EDITION 0056 Q
CORP CODE OGN COUNTRY A
ADSTRACT CAUSE - INS T RU ME N T DRIF T = DURING TESTING. THE TRIP SETTING OF APR M CH ANNE L A At 02 RECIRCULAtlON WAS
(; Q 55 5E (LIMIT 54 * -13) AND CHANNEL D AT SOE FLOW wAS 91 X (LIMIT 87 + -128.
THE APPARENT CAUSE FOR e}
i li CHANNEL A WAS INSTRUMENT DRIFi.
IT WAS RESET.
THE CAUSC FOR CHANNEL 0 WA S THE CIRCUIT LOADING OF l!
TEMPOR ARILY INSTALLED TEST INSTRUMENTATION WHICH WAS NOT REQUIRED At THE TIME OF THE OCCURRENCE.
WHE N THE TESI I NSTRUMENT A T ION WAS REMOVED. THE SET POINTS WERE wlTHIN LIMITS.
DEST INSTRUMENTAflON WILL BE Q
INSTALLED ONLY wHEN PaiEDED AND PROMPILY RE MOVE D.
()
KEYWORDS REACTOR. owr IF A E LURE i RNS TRUMEN T. NUCLE ARIRE ACT OR PROTECilDN SYSTEMiINSTRUMENT CALIBRAfl0N8 INSTRUMENT.
SWITCHi1EST. SYSTEM OPER AB I L I T Y 3 F A I LUR E. MAINTENANCE ERROHISET POINiiARNULO (owr 38 DRIFT p
27/6/0000001-0000206//
154 g
ACCESSION NO.
0020095394 iITLE REACTOR PRESSURE SWITCH ISOLATION V ALVES FOutO CLOSED AT ARNOLD CORPAUTH IOWA ELECTRIC LIGHT AND POWER COMPANY Q
DATE 1974 Q
8 l
TYPE O
ME MO 3 PAGES. LEITER WITH ADNORM AL OCCURRENCE REPOR T 74-28 TO DIRECTORATE OF REGULAfDRY OPERATIONS (AEC).
AUG. 15. 1974 DOCKET 50-331. TYPE--UwR. M F G-G.E.. AE--COMMUNwEAL1H ASSOC.
gQ AVAIL AVAILAHILITY - NRC PUBLIC DOCUMENT ROOM. 1787 H STREET. WASHINGTON. D.
C.
20545. 405 CENTS /PAGE -
g MINIMUM CHARGE S2 003 I
C A T EGORY 1700003090000 Eu3I10N 0056 Q
CORP CODE BGN g
i COUNTHY A
f ADSTRACT CAU$t - OPERATOR LRROR.
DURING A R ANDOM INSPECTION. THE ISOLATION VALVES FOR 2 REACTOR PRESSURE SwlTCHES WERE FOUND 10 BE CLOSED.
THESE SW 11CNS PROVIDE A HIGH REACIOR PRESSURE TRIP SIGNAL TP 2
. Q DIFFERENT CHANNELS OF THE REACTOR PROTECT IVE SYSTEM.
APPARENTLY THE VALVES wERE NOT UPENED FOLLOwlNG g
COMPLETION OF SURVEILLANCE 1EsilNG EVEN THUUGH THIS STEP WAS INI T I ALED AS DEING DUNE.
THE VALVES WERE I
l OPENED.
THE OPERATOR WAS WARNED OF THE IMPORTANCE OF FOLLOwlNG PROCEDURES.
KEYWORDS RCACTOR. DWRIFAILUREEFAILURE. UPERATOR ERRORICONTAINMENT ISOLATIONEREACTUR PROTECTION SYSTEM 8 Q
INSTRUMENT. SWIICH3 ARNOLD EUwR)8 VALVES g
27/6/0000001-0000206//
155 ACCESSION NO.
0020095824 l Q TITLE REACTOR PROTECTION SYSTEM RELAY F AILS A T COOPER
,}
i CORPAUTH NE BR ASK A PUOL8 C POWER DISTRBCT l
DATE 1974 I
TYPE O
l P MEMO 2 PAGES. LETTER 10 DIRECTOR ATE OF RECULATORY OPER ATIONS (AEC). REGION IV. AUGUST 83. 1974 DOCKET
.)
I 50-298. TYPE--UwR. M F G-G.E.. AE--OURNS & ROE AVAIL AVAILAHILITY - NRC PUOLIC DOCUMtNT ROOM. 1787 H STREET. WASHINGTON. D. C.
20545. (08 CENTS /PAGE -
MINIMUM CHARGE S2.003
(
CATEGORY 1700005090000 Q
EDITION 0056 CORP CODE NPP COUNTRY A
Q ADSTR ACT CAUSE - LIMIT Swl1CH MISALIGNMENT.
DURING MAIN STEAM ISOLATION VALVE TESTING WITH THE REACTOR AT 754 Q,
POWER. RPS RELAY S AK -3A DID NOT DE-ENE RG 12 E AS REOUIRED FOR A 10% CLOSURE OF MSIV 80A.
IT WAS PLACED IN THE TRIPPED CONDITON.
DURING AN OUTAGE. MIS ALIGNMENT W AS DOSERVED BE tw EEN THE VALVE LIMIT SwlTCH AND THE ASSOCIATED LEVER ARM WHICH ACTUATE THE SWITCH.
1HE MISALIGNMENT WAS APP ARENTLY DUE TO THERMAL Q
EXPANSION.
THE LEvtil ARM WAS ADJUSTCD.
Q RE YWORDS REACTOR. BWR3 FAILURE 5HEACTOR PROTECTION SYSTENiTHERMAL MECHANIC AL EFFECT ICONTROLi!NSTRUMENT. SWITCH 3 O
O O
27/6/0000005-0000206//
155 CONTINU41 ION I PAGE 63 Q
REACTOR STARTUP EXPERIENCE 81ESI. SYSTEM OPER AS ILI TY i F A ILURE. M A IN T ENANCE E RROR I THERM AL PROPER T Y t COOPER Q
(owr)3 RELAYS 27/6/0000001-0000206//
156 Q
ACCESSION NO.
00Z0094939 Q
T11LE SCRAM DISCHARGE VOLU ME LEVEL SWITCH DEFICIENCY AT BOILENG WATER REACTORS ORPAU TH GENER AL ELECTR IC COMPANY 1974 TYPE Q
Q 2 PAGES. LEllER 10 DlHECTOR ATE OF LICENSSNG (AEC). AUGUST 16. 3974 DOCKETS 50-278/298/323/335/333/343.
f
]
TYX3--ewRg MF G-G. E.
F m.._... _.
.~,_m.
OEEVWORDS REACTOHe BM 8F AILURE IRE ACTOR PHOTECTION SYSTEC31 THERMAL MECHANICAL EFFECT 8 CONTROL 3 8MSTLUMENT. S~JITCHI o
o i
O O
27/6/0000005-0000206//
ISS CONTINUATION 1 PAGE 63 Q *
(DWR)3HELAYS REACTOR ST ARTUP EkPERIENCE11EST, SYS TEM OPER AB ILlif iF A ILURE. M A IN T EN ANCE E RROR $ THE RM AL PROPER T Y 3 COOPER g
27/6/0000005-0000206//
156 Q
ACCESSION No.
00 ZOO 94939 v}
TITLE SCHAM D8SCHARGE VOLUME LEVEL SWITCH DEFICIENCY AT BOILING WATER RE ACTORS CORPAUTH GENEHAL ELECTRIC COMPANY 1974 TYPE Q
g 2 PAGES. LETIER TO DIRECTOR ATE OF LICENSING (AECle AUCMST 16, 1974. DOCKETS 50-2 F8 /298/32 8 /331/333/34 8.
3 YPE --B W R. MF G-G. E.
AVAIL AVAILAOILITY - NHC PUBLIC DOCUMENT ROOM. 1717 H S T HE E T, WASHINGTON. D.
C.
20545. 808 CENIS/PAGE -
g [t Q
MINIMUM CHARGE S2.00)
CATEGORY 1700008090000 EDITION 0056 f
CORP CODE GEC Q
COUNTRY A
}j~
AOSTRACT CAUSE - DESIGN ERROR.
THE SELF-EOUALI Z ING FLO AT TYPE LEVEL SWITCH USED IN SCRAM DISCHARGE VOLUME CONTROL FOR SOML owr S DOES NOT PEHFORM AS DESIRED.
PROCEDURAL CONTROL CAN ASSUM THAT ALL SAFE 1Y FUNCTIONS AHE AVAILAHLE.
THE DEFICIENCY RESULTS FROM IHE POSSIBLE SINKING OF TN. FLO A T AF TE R A SCRAM g
Q AN D DEFOHE THE SCR AM DISCHARGE VOLUME IS OR AINED.
UNTIL A REPL ACE MEN T SWITCH CAN DE INSTALLED, A
,} '
PROCEDURE HA S DE EN P RE PA RE D THA1 WILL ASSURE SCR AM C APASILl1Y DOES EMIST.
KEYWORDS REACTON. BWHiF AILURE IPROCEDURES AND MANUALS 8 REACTOR PAOIECilON SYSTEM 8 FIT 2 PATRICK (BWR)3tNSTRUMENT.
SWITCHiMODIFICATIONIFAILURE. DESIGN ERROH8 COOPER (BWRIIHAICH I ( DW R l 8 ARN(A.D (SWR)8 FERMI 2 (BWH)iPEACH Q
00TTOM 3 (BWR);FAELURE. COMMON MODE 3 SENSORS, LLVEL
]j 27/6/0000003-0000206//
157 ACCESSION NO.
0020094874 Q
TITLE LEVEL SWITCH OUT OF ADJUSTMENT AT ARNOLD ga CORPAUTH IOWA ELECTHIC LIGHT AND POWER COMPANY g
DATE 1974 TYPE Q
Q ME MO 3 PAGES. LETTER TO DIRECf0 RATE OF REGULATORY OPERATIONS (AEC). REGION Ille JULY 25. 1974. DOCKET Q
50-333. T Y PE-UW N.
MFG--G.E..
AE--COMMONWE AL TH ASSOC.
AVAIL AVAILABILITY - NRC PUOLIC DOCUMENT ROOMe 1787 H STREET. WASHINGTON. D. C.
20545. 108 CENTS /PAGE -
MINIMUM CHARGE S2.003 Q
CATEGONY 3700008090000 g,
EORTION 00 Sf>
j COHP CODE OGN A
COUNTRY A
Q AOSIR ACT CAUSE - BIAS SPRING ADJubfMENT.
DURING TEST ING OF THE DISCHARGE VOLUME HIGH W ATER LEVEL INSIRUMENTS, I
}
OF THE A LEVEL SWITCHES DID NOT DPEN.
THE C AU SE WAS AN OUT OF ADJUSTMENT HIAS SPRING WHICH KEPT THE CONTACT IN THE LEVEL SW11CH CLOSED.
THE SPRING WAS ADJUSTED.
THE REACTOR WAS SHUTDOWN AT THAT TIME.
I KEYW DS HEACTOR, OWR IF AILURE IRE ACTOR PROTECilON SYSTEMilNSTRUMENT C ALI OR A T I ON 8 I NST RUMEN T. SWITCH 8REAC10R
,k &
STARTUP E XPE R I EN LE il ES T. SYSTE M OPER AB ILI T YiF A ILUHE, MAINTENANCE ERRO43 ARNOLD (BWR)3 CIRCUIT
)!
CLOSERS / INTERRUPTERS 8SENSURSe LEVEL 27/6/0000003-0000206//
158 p#
ACCESSION NO.
0020094392 S
TITLE SEI POINT DRIFT IN PICOAMMETER AT HUpe3OLDT DAY CORPAUTH PACIFIC GAS AND ELECTRIC COMPANY DATE 3974 O
TYPE O
'}
i D
MEMO 2 PAGES. LETTER 10 DIRECTORATE OF L ICE NSING (AEC). JUNE 25. 3974 DOCKE T 5 0-133. TYPE--BWR.
MFG--G.E..
AE-DE CH T E L AVAIL AVAILABILITY - NRC PUULIC DOCUMENT ROOM. 17 t F H SIREE T. WASHINGTON. D.
C.
20545, 808 CENTS /PAGE -
O
"'"'""" c"^"6'
'2-9 CATEGORY 3700008090000 0
9 0
9 27/6/0000001-0000206//
150 CONTBNUATION I PAGE 64 f
Q EDITION 00$$
Q CORP CODE PGE COUNTRY A
ABSTHACT CAUSE - COMPONLNT DEGRADATION.
DURING THE DAILY PBCOAMMETER TRIP SETTING IEST. NO TRIP WAS OBSERVED AT Q
123% UN A PICOAMMETEH.
1HE OPEH ATOR DID NOT GU A60VC THlb POINT AS IT IS THE UPPER LIMIT.
DN Q
d ADDITIONAL TESTS, IT TRIPPED A TIMES.
THE UNIT WAS REPLACED WITH A SPARE.
THE TRIP CIRCUIT AND B 50 V 4
INTERNAL POWEH SUPPLY COMPONENTS HAD DEGR ADED TO THE POINI WHERE SET POINT DHIFT COULD OCCUR.
ALL DEGRADED COMPONENTS WLRE REPLACED.
)
Q KEYWORDS REACTOR. DwH8FAILUHE, CUMPONENT8 FAILURE 8HUMOOLDT BAV (OwHl8 REACTOR PROTECTION SYSTEM 8 INSTRUMENT Q
C ALIGH AT ION IINST RUMENT. SWBTCH8 TEST. SYSTEM OPEHABILITYiRNSTRUMENT. POWEH H ANGE 8 SE T POINT 8 DRIFT 8CIRCUti ceN,iHUWXCDFYilmDELT
y manaava onm.s.
es.vus i
CATEGORY 17 CCG'9 5 @903@@
"l C
9 I
C 9
27/6/0000001-0000206//
158 CONTINUATION I PAGE 64 Q,*
EDITION 0055 Q
l CORP CODE PGE I
COUNTRY A
J ABS TR ACT CAUSE - COMPUNLN T DEGRADATION.
DURING ftE DAILY PICOAMMETER TRIP SETTING TEST. NO TRIP W AS OBSERVED AT p
1234 UN A PICOAMMETER.
THE OPERATOR DID NUS GG ABOVE THIS POINT AS IT IS THE UPPER LIMIT.
ON
- }
ADDITIONAL TESTS. II TRIPPED 4 IIMES.
THE UNIT WAS REPLACED WITH A SPARE.
THE TRIP CIRCUti AND ISO W IN TERNAL POWER SUPPLY COMPO* TENTS HAD DEGR ADED 10 THE POINI WHERE SET POINT DRIFT COULD OCCUR.
ALL DEGRADED COMPONENTS WERE REPLACED.
Q KEYWOROS REACIOR. DwR5 FAILURE. COMPONENT 8 FAILURE 8HUMOOLDT 84f ISWR)3fTACTOR PRO T E CT ION SYSTEM 8 INSTRUMENT Q
C ALIBR AT ION ilNSifeUMtNT. Swl1CHiiEST. SYSTEM UPER ABILI TY 3 INSTRUMENT. POWER RANGE 8SE1 POINT 80 RIFT 3CIRCUlf CLOSERS /INTERRLEDIERS p
27/6/0000001-0000206//
159 Q
~
ACCESSION NO.
002009363I TITLE SET POINT DRIFT IN LEVEL Sw!TCH AT ARNOLD CORPAUTH lowA ELEC3RIC LIGHT AND POWER COMPANT Q
DATE 1975 g,
TYPE Q
MEMO 3 PAGES. LETTER WITH AO REPORT 75/5 TO OFFICE & INSPECTION AND ENFORCEMENT. REGION 3. JANUARY 3 8.
l 1975. DOCMEI 50-JJt. TYPE--BWR. MF G-G. E., AE--COMMUNWE ALTH ASSOC.
Q AVAll AVAILABILITY - NRC PUOLIC DOCUMENT ROOM. 178F H STREET. WASHINGTON. D.
C.
20SAS. 408 CENTS /PAGE -
g!
MINIMUM CHANGE s2 003 CATEGORY I700008090000 EDITION 00S8 Q
CORP CODE OGN Q
COUNTRY A
ABSTRACT CAUSE - INS 4RUMEN T DRIFT.
DURING TESTING OF THE DISCHARGE VOLUME HIGH WATER LEVEL SwlTCH. TPE TRIP SETTING WAS FOUND TO BE
+2 INCHES OF W ATER. WHICH EXCEEDS THE UPPER LIMIT OF OI/2 INCH.
THE APPARENT Q
CAUSE WAS INSTRUMENT DRIFT.
THE SWIT CH W AS REC ALl8R ATED.
[
]
KEYWORDS REACIOR. owr 3F AILURE ERE ACT OR PROTECTION SY ST E4 8 8 MST RUMEN T C ALIBR A TI ON IF A ILURE. I NS T RUMENi l INS T RUME NT.
/
SWITCH 8 TEST. SYSTEM OPERABILITY 8 SET POINTtARNOLD (BWR ) 3DR IF T 8 SENSORS. LEVEL
/
,) '
Q 2F/6/0000005-0000206//
160 ACCESSION NO.
0020093630 TITLE MODE SWITCH FAILS TO INITIATE FULL SCRAM SIGNAL AT PEACH BUTTOM 3 CORPAUTH PHILADELPHIA ELECTRIC COMPANY. PENNSYLVANIA Q
DATE 1975 Q
TYPE O
ME MO I PAGE. LETTER 10 Div!SION OF REAC10R LICENSING NRC. FEBRUARY 2.
3975. DOCKET 50-2F8. T YPE -B WR.
MFG--G.E.,
AE--DECHIEL Q
AVAIL AV A ILA BILI T Y - NRC PUBLIC DOCUMENT ROOM. 1787 H STREET. WASH 5NGTON. D.
C.
20545. 108 CENTS /PAGE -
Qi MINIMUM CHAHGE S2.00)
CATEGORY 1700008090000 EDITION 0058 Q
CORP CODE PEC J)
COUNTRY A
A85 TRACT CAUSE - INTERMITTENT SWITCH CONTACT.
AFTER INSERTION OF ALL CONTROL RODS AND PLACEMENT OF THE MODE SWITCH IN SHUTDOWN. IHE MODE SWITCH WAS PLACED IN REFUEL.
POSITION TO ENABLE MOVEMENT OF A SINGLE Q
THE SWITCH F AILED TU ALLOW THE MOilON AND WAS THEN CYCLED T O SHUIDOWN ANO S ACK TO REFUEL
()
TO CLE AR THE PROULEM.
THEN THE SWITO4 FAILED TO INI T I A T E A FULL SCR AM WPE N MOVE D TO SHUTDOWN.
THE SwllCH CONT ACE S wERE MAKING UP INTERMITTENTLY.
THE SWITCH WAS REPLACED.
KEYWORDS REACTOR. owr 8FAILUREIREACTOR PROTECTION SYSIEMIREACTOR CONTROL
- FAILURE. IN ST RUMEN T I INS T RUMEN1. SWITCH 3 Gk Q
REACTOR STARIUP EXPEkIENCEgPEACH OOTTOM 3 ( bur )
27/6/0000001-0000206//
16I ACCESSION NO.
0020093628 Q
TITLE A TRIP INSTRUMENT NOT IN SERVICE DURING STARIUP AT PEACH BOTTDM 2 Q
CORPAUTH PHILADELPHIA ELECTRI C Cone *ANY. PENNSYLVANIA O
O O
O 27/6/0000001-0000206//
865 CONTINUATION 1 PAGE 65 Q
DATE 1975 Q
TYPE O
MEMO 2 PAGES. LETTER TO DIVISION OF REACIOR LICENSING NRC. FEBRUARY 3.
1975. DOCKET 50-277. TYPE--OWR.
MFG-G.E..
AE--OECHIEL Q
AVAIL AVAILABILITY - NR C PUOLIC DOCUMENT ROOM. 1787 H STREET. WASHINGTON. D. C.
20545. (OS CENTS /PAGE -
Q MINIMUM CHARGE s2.00)
CATEGORY 1700003090000 EDITION 00b8
- Q TORP CODE PEC Q
COUNTRY A
P V 4 EYY4L J2/W~TL o
{
i,
... s....
CORPAUTH PH I L AD E LPH I A E LE C T R I C CO MP ANY e PENNSYLVANI A i
()
(I
(?
27/6/0000005-0000206//
So l CONTINUATION 1 PA GE 65 9
h
(}
DATE 1975
/}
I TYPE O
NEMO 2 PAGES. LETTER TD DIVISION OF REACTDR LICENSING NRC. FE BRL ARY 3.
1975. DOCKET 50-277. T YPE --B WR e M F G-G. E.. A E-BE CH T E L
()
AVAIL AVAILABILITY - NRC PUullC DDCUMENE ROOM. 3787 H STREET. WAkHINGTDN. D. C.
20545. 4 08 CEN TS/PAGE --
/}
MINIMUM CHAR GE S2.00)
CATEGORY 1700003090000 EDITIDN OOS8
()
CORP CODE PEC
/)
CDUNTRY A
ADSTRACT CAUSE - MAINTENANCE ERROR.
DURING A ROUTINE ST ARTUP I NSPECT I ON. A REACTOR LOW WATER LEVEL SCRAM / REACTOR HIGH WATER LEVEL HPCI TURDINE TRIP INSTRUMENT WAS FOUND OUT OF SERVICE.
FDLLDWING
()
MAINTENANCE ON ETS I NS T R UM EN T TE S T VALVE HLOCK. THE CORRECT VALVE LINEUP W AS NOT PERFO RME D.
T HE
/}
INSTRUMENT WAS IMMEDIATELY OACKFILLED. WENTEUs AND RETURNtD TO SERVICE.
KEYWORDS REACTOR. OWR EF AI LURE iDPERA 18 DN 3 RE AC TOR PROTECTEDM SYSTEM 3 INSTRUMENT. SW I TCHiF A ILURE. M AIN TEN ANCE ERADR 3 PEACH BGTTDM 2 GHWRIISENSORSe LEVEL 27/6/0000005-0000206//
162 ACCESSION NO.
00Z0093546 TITLE SET PORMT DRIFT IN A PR M AT F I T 2PA TR ICK
' t
()
CORPAU D1 N E A GAR A MOHAWK POWER CORPORAllDN. NEW YDRK
.),
DATE 1975 TYPE O
MEMO 2 P A GE S. LETTER WITH AO REP OR T 75/14 TO AEC DIRECTORATE OF L I CE NS I NG. JANUARY 29, 1975. DOCKFT 50-33J.
()
T Y PE --DW N. MF G --G.E. e AE--STONE & WE BS T ER
,} }
AVAIL AVAILABILITY - NRC PUBLIC DOCUMENT ROUM. 1787 H STREET. WASHINGTON. D. C.
20545. 408 CENTS /PAGE --
CATEGDRY 170G003090000 l") ll g}
EDITION 0058 CORP CODE NMP 1
CDUNTRY A
DURING TESTING WITH T HE REACTOR AT CDLD SHUTDOWN. THE DOWNSCALE SET POINT OF A APRM
()
UNIT W AS F OUND TO BE 24 POWER RATHER T H AN THE REQUIRED 2.5% POWER.
THE CAUSC IS THOUGHT TO BE
(} -
INSTRUMENT DRIFT.
THE INVESTIGATION OF THE AP RM SYSTEM IS CONTINUING.
KS. YWORDS REACTDR. OWRIFAILURE8HEACTOR PRO T E CT ION SYSTENIFITZPATRICK (BWR ) i E NS T RUMEN T C AllBR A T IONIF AILURE.
l I NS T RUMEN T 4 INS T R UMEN T, SW I T CHIRE AC T OR STARTUP EX PE R I E NCE i T EST. SYSTEM OPER AD S L I T Yi E NST RUMENT. POWER
}
(p RANGE 4 SET PO IN T 3DR IF T
'),
27/6/0000003-0000206//
163
,)
I' ACCESSION NO.
00 Z 006 7233
(}
T I T LE SET POINT DRIF T IN LEVEL SWITCH AT PEACH DOTTOM 2 CORPAUTH PHILADELPHIA E LLCTRIC COMPANY DATE 19 T3 l
).'
TYPE O
{}
MEMO 2 P A GE S. LETTER TO DIRECIDR AT E OF L I CENSING (AEC). DE CEMBE R le 1973. DOCKET 50-277 TYPE--nWR, MF G--G. E.. AE--HE CH T E L AVAIL AV%ILAHILITY - NRC PUBLIC DOCUMENT RDOMe 178 7 H STREET. WASHINGTON. D.
C.
20545. 400 CENTS /PAGE --
t MINIMUM CHAR GE s2 003
()
CATEGORY 8700004090000
}
EDITION 0052 CURP CODE PCE COUNTRY A
()
ADSTRACT DURING A TEST. A REACTOR LOW LEVEL SWITCH SET POINT HAD SHIFTED TD -3.43 I NCHE S.
THE LIMIT IS O INCHES
()
DR GREATER.
T HE SWITCH WAS RECALIBRATED.
NO MECHANICAL DIFFICULTIES WERE FDUND.
THE OTHER 3 SWI TCHES
(
IN THIS CIRCUIT DPERATED PROPERLY.
KLYWDRDS REACTORe GWR EF AILURE IRE ACT OR PROTECTION SYSTEM 8 INSTRUMEN T CALI BR A T I ON 8 I NST RUMEN T. SWITCHIREACTOR
()
ST ARTUP EXPERIENLEITEST. SYSTEM DPERABILITY; PEACH BDTTDM 2 (BWR)3 SET POI NT t DR I F T ICIRCUl f (g
CLOSERS /IN T ERRUPTERS $SENSONSe LEVEL i
()
1D C) 4D 1'
27/6/0000003-0000206//
164 PAGE 66
()
ACCESSION NO.
0020007232 (g -l TITLE EXCESS WIRE CAUSE SW ITCH M ALFUNCTION A T PE ACH DOTTOM 2 CORPAUTH PHILADELPHI A ELECTRIC COMPANY DATE E973
)
(}
TYPE O
()
ME MO 3 PAGESe LETTER TO DIRECTORATE UF LI CE N SING (AEC). DECEMUE R II. 1973. DOCK E T 50-277. T YPE --R WR.
MFG--G.E.e AE--DECHTEL AVAIL AV A I LAITI L I T Y - NRC PU6LIC DOCUMENT RDOM. 3 7 5 7 H STREET e WASHINGTON. D.
C.
20545. (OS CENTS /PAGE --
()
MINIMUM CHARGE S2.OOD
()
CATEGDRY 8700004090000 FMW fl D FITy 2 m
m e.uu.u...c
.. w...u.
u c.~. u...%.. _... -....................
. p j
CLOSEAS/ENTERRUPTERSESENSORSe LEVEL i.
O i e o
27/6/0000001-0000206//
164 PAGE 66 QI ACCESSION NO.
002008F237 q
gg1LE EXCESS WIRE CAUSE SulTCH MALFUNCTION A1 PEACH BOTTOM 2 CORPAUTH PHILADELPHIA ELECT RIC COMPANY DA1E 1973 O
TYPE Q
9 ME MO 3 PAGES. LETTER TO DIRECTORATE OF LICENSING (AEC). DE CEMUE R II. 1973. DOCKE T S0-2TF. T YPE -G wR.
MF G --G. E., AE--DECHTEL AVAIL AV A I LAt9 5 LI T Y - NR C PUtlL I C DOCUME N T ROOM. 1717 H ST EET. WASHINGTON. D.
C.
20S45. 808 CENTS /PAGE -
(*'
MINIMUM CHARGE $2 003 r}
CATEGORY IF00003090003 EDITION 0052 CORP C G)E PEC
('
COUNTRY A
Q
~
ADSTRACT A SCRAM AND GROUP 1 ISOLATION WAS ACCIDENTALLY INITIATED WHILE SURVEILLANCE TESTING.
PLANT RESPONSE WAS AS EAPEC TED.
HEVIEW OF THE PLANF COMPUTER ALARM TYPE INDICATED A LEVEL SwlTCH ON THE SCRAM OISCHARGE VOLUME OPER ATED TOO SLOWLY.
IT HAD MALFUNCTIONED IWICE OEFORE.
INSPECTION FOUND THAT THE
('
WlHE FROM THE MURCURY BULD TO THE TERMINAL WAS TOO LONG.
IT RUBBED ON THE COVER AT TIMES.
E X AM I N A T I ON q
UF THE S OTHER SIMILAR SW I TCHES F OUW ONE O T N.R LDNG utRE AW A DEFORMED CONT ACT. THE 3 SWITCH MECHANISMS WERE REPLACED.
KEYWORDS REACTOR. BwR& FAILURE 3 REACTOR PRDIECTION SYS TEM 5 I NSTR UMEN T. SWITCHlREACTOR STARTUP EXPERIENCE; FAILURE.
Q F AS H IC A T ION ERROR 8 TEST. SYSTEM GPERASILITV8 PEACH 80TTOM 2 towRl8 CIRCUIT CL OSE RS/ IN T E R RUP TE R S 5 SENSOR S.
.}
LEVEL M /0000001-0000206//
165 ACCE SION NO.
0020087067 Q
i FAILURE OF LEVEL SWITCH DUE TO OMIDATION OF MERCURY AT NINE MILE POINT CORPAUTH NI AGARA MOHAWK POWER CORPORATION.
N.Y.
DATE 19 F3 Q]
Q TYPE O
MEMO P PAGES. LETTER TO DIRECTOR OF REACTOR LICENSING (AEC). DECEMBER 30. 1973. DOCKET S0-Ir20. T Y PE--Ou,R.
MFG--G.E.,
AE--NIAGARA MOHAWK AVAIL AVAILAntLITY - NRC PUOLIC DOCUMENT ROOM. IFl7 H STREET. WASHINGTON. D.
C.
20545. (08 CENTS /PAGE -
Q MINIMUM CHARGE S2.003 Q
CATEGORY lF00008090000 f
EDITION 0052
/
CORP CODE NMP s
Q COUNTRY A
Q ABSTRALF DURING T E!. I I NG OF THE SCRAM DUMP VOLUME LEVEL SWITCHES. I OF 4 FAILED TO OPERATE.
A PIN HOLE. LEAK IN 7
l THE BULB RESULIED IN OXIDATION OF THE MERCURY.
ALTHOUGH THE Swl TCH C ARRI AGE wOULD ROT ATE, THE MERCURY WOULD NOT MOVE OUT OF CONTACT WITH THE SWITCH vlRE INSIDE THE BULB.
THE MERCURY SULS WAS REPLACED.
Q THIS IS THE F I RG T F A ILURE OF THIS TYPE.
ALL MERCURY SWITCHES WILL BE vlSUALLY CHECKED FOR EvlOENCE OF Q
OXIDATION.
l KEYWORDS REACTOR. DwH3 FAILURE. COMPONENT $ F A ILURE 3NINE M ILE PO INT I (SWRiiREACTOR PR OTEC T ION SYSTEM 3 INSTRUMENT.
SulTCHITEST. SYSTt.M OPER Aa lLI TY 8 SENSORS. LEVEL 27/6/0000001-0000206//
366 ACCESSION NO.
00200855a1 TITLE DRIFT IN SET POINT OF POWER-RANGE NEUTRON MONITORS AT DRESDEN I Q
CORPAUTH COMMONWEALTH EDISON COMPANY Q
041E 19 F3 I
TYPE O
MEMO 2 PAGES. LETTLR TO DIRECTORATE OF LICE NSING (AEC). NOVE MBER 16. 1973. DOCK E T S0-10, T YPE --M wR.
Q MFG--G.E.,
AE--DECHTEL Q
AVAIL AVAILABILITY - NRC PUBLIC DOCUMENT ROOM. 1787 H S T RE E T. WASHINGTON. D.
C.
2054S. (08 CENTS /PAGE -
MINIMUM CHARGE S2 003 CATEGORY 8F00003090000 Q
EDITION 00S1 g
CORP CODE ORS O
G O
O 27/6/0000001-0000206//
166 CONTINUATION 1 PAGE 67 Q
COUNTRY A
g AUSTRACT DURING CHECKS ON THL REACTOR-POWER-RANGE MONITORS. 2 CHANNELS HAD 1 RIP POINTS OUTSIDE THE 117-123E LIMIT.
ONE TRIPPED AT 1805 AND THE OTHER AT 124 RECENT MODIFICATION (REPLACING THE l-TURN PO TEN T IOME TERS WITH 8-TURN ONES) HAD NOT SOLVED THE DR IF T PROOLEM.
THE INSTRUMNTS wERE RESET TO 1874 OF FULL POWER.
IHE kEACTOR MODE SwllCH WAS IN
- REFUEL.'
Q Q-KEYWORDS REACTOR. HWHIDRESDEN 3 (DwH ) 3F AILUREiHEACTOR PROTECi lUN SYSTEMSINSTRUMENT CALIBRATION 3 INSTRUMENT.
SwlTCH81tST. SYSTEM OPER Aul L E T Y 8 F A I LURE. DE SIGN ERROR & B NSTRUMEN T. AHNOR MAL IND IC AT ION 8 INST RUMENT. POWE R RANGE 8 SET PO IN T 8 DR IF T 3 C IRCU I T CLOSERS / INTERRUPTERS 27/6/0000005-0000206//
167 csec) m. womaeom l
9 yu e e e ue.
w w.o a LuRP CODE DRb e
e h
h O
9 27/6/0000003-0000206//
866 CONTINUATION 3 PAGE 6F Q
COUNTRY A
Q E ABSTRACT DURING CHECKS ON THE REACTOR-POWER-RANGE MONITORSe 2 CHANNELS HAD TRIP POINTS OUTSIDE THE 117-323E LIMIT.
ONE TRIPPED AT 130* AND THE OTHER AT 124 RECENT MODIFICATION IREPLACING THE l-TURN PO T ENT IONE TERS WITH 8-TURN ONES) HAD NOT SOLVED THE DRIFT PRORLEM.
THE INSTRUMENTS WERE RESET TO 317E p
OF FULL POWER.
THE NEACTOR MODE SullCH WAS IN 'REFutiL.*
Q KEYWORDS RFACTOR, HWRIDRESDEN 1 (OWRBIFAILURE3 REACTOR PROTECTION SYSTEM t lNS TRUMENT CALIBRATION 3 INSTRUMENT.
SWITCH 81 CST. SYS T E M OPER AulLITY3 F AILURE. DE SIGN ERROR 8INSTRUMENTe ABNOR MAL INDICATIONiRNSTRUMENT, POWE R RANGE 8SE7 PO IN T 4 DR IF T 3 C IRCU I T CLOSERS / INTERRUPTERS 27/6/0000005-0000206//
167 ACCESSION NO.
00200855F0 TITLE SET-PolN1 delft IN LEVEL SWITCH AT BROWNS FERRY I (BFAO-7333W) p CORPAUTH T E NNESSEE W A LL EY AUTHORITY. CHATTANOOGA
]
DATE 1973 TYPE O
LEITER WITH ATTACHMENT TO OIRECTORATE OF LICENSING GAEC). NOVE MBE R 16, 39F3. DOCKET 50-259.
p T YPE-BWR e M F G-G. E.. AE-T V A
.)
AVAIL AVAILABILITY - NRC PUOLIC DOCUMENT ROOM, 8787 H STREETe WASHINGTON. D.
C.
20545, 808 CENTS /PAGE -
MINIMUM CHARCE S2 00)
CATEGORY 170000809000C Q
ED1180N FOSI
]
CORP CODE TVA COUNTRY A
ABSIRACT DURING TESTING OF THE REACTOR-PROTECTION-SYSTEM REACIOR-WATER-LEVEL SWITCHES WITH THE RE ACTOR AT 30t Q
POWEk. 2 BARTON MODE L 286A DIFFERENTIAL PRE SSURE INDICA T ING SWI T CHES OPER A TED AT 533 IN. AND 53F IN.,
}
WHICH IS DUTSIDE THE 538 IN. ABOVE VESSEL ZERO LIMIT.
THEY WERE REC AL IBR A T ED e AND LOCKING PLATE ASSEMBLIES WILL BE INSTALLED WHEN RECE!WED.
KEYWORDS REACIOR, SWR 8F AILURE 3RE ACTOR PROTECTION SY STEM 8 B NS1RUMEN T CALIBRATION $INSTRUMENTe SW11CH81EST, SYSTEM g
OPER AB IL I T Y 8 I NST RUME NT. ABNORMAL INDICATION 8 INSTRUMENT, PRESSURE 8 SET POINi tBROWNS FERRY l (BWRS3 DRIFT 8
]
CIRCUIT CLOSER S/ I NT E RRUPTER S 8 SENSORS. LEVEL 27/6/0000001-0000206//
E68 Q
ACCESSION NO.
00Z0085382
]
TRILE SEE-POINT DRIFT IN PRESSURE SWITCH AT HUMBOLDT BAY CORPAUTH PACIFIC GAS AND ELECTRIC COMPANY DATE 19F3 Q
TYPE O
]
MEMO 2 PAGES. LETTER TO DIRECTORATE OF 1.ICENSING (AECle SEPTEMBER 19. 8973. DOCKET 50-333. T YPE-BWR e MF G--G. E.. AE-G E CH T EL AVAIL AVAILABILITY - NRC PUBLIC DOCUMENT ROOM. 178F H STREET. WASHINGTON. D.
C.
20545e 408 CENTS /PAGE =
G MINIMUM CHARGE S2.00)
]
CATEGORY 1700003090000 EDITION 0051 CORP CODE PGE G
COUNTRY A
.}
A051R ACT DURING FUNCTIONAL TE ST ING WHILE THE REACTOR WAS DOWN FOR REFUELING. I OF A REACTOR HIGH PRESSURE TRIP SE N SOR S W A S F OUND TO HAVE A SETTING OF 1215 PSIG.
THIS EXCEEDS THE OPERATING-MODE LIMIT SY 5 PSI.
THE SENSOR IS A TYPE 73 MOVEMENT IN A FOMBORD ROT AX MODEL N/48 PRESSURE CONTROLLER.
THIS IS THE FIRST TIME g
SINCE STARTUP IN 196.5 THAT ONE OF THESE HAS SEEN FOUNO AROVE LIMITS.
I T W AS RECALIBR ATEO.
}
KEYWOROS REACTOR. BWR IF AILURE ; HUM 80LDI BAY (BWH)$ REACTOR PROTECTION SYSTEM 8tNSTRUDEENT C AL IB R A T ION 3 INST RUME N T e SWITCH 3 REFUELING 8 RELIABILITY, COMPONEN T 3 TEST e SYSTEM OPER AB I L E T Y 3 I NS TRUMEN T o ARNORMAL INDICATIONS I NS T RUME N T. PHES SURE iSE T POINT 3 DRIFT 3 CIRCUIT CLOSE RS/IN TE RRUP TE RS 27/6/0000003-0000206//
169 ACCESSION NO.
0020084875 TITLE MALFUNCTION OF DRYWER.L PRESSURE SWITCHES AT BROWNS FERRY l (RFAO-7328WS Q
CORPAUTH T E NNE SSE E VALLEY AUTHORITYe CHATTANOOGA g
DATE 1973 0
9 O
e 27/6/0000001-0000206//
169 CONTINUATION I PAGE 68 Q
TYPE o
g e4E MO 2 PAGES. LETTER TO DIRECTORATE OF LICINSING (AEC). OCOTBER 87, 3973. DOCKE T 50-259. T YPE -MWR,
MF G-G.E., AE-T V A AVAIL AVAILABILITY - NRC PUOLIC DOCUME.NT ROOM. IFl? H SikEE T. WASHINGTON. D.
C.
20545. 808 CE'NTS/PAGE -
/]
MINIMUM CH ARGti 52.00)
Q CATEGORY 1700003090000 EDITION 0051 CORP CCDE TVA m
Q COUNTRY A
Q ASSTR ACT DURING TESTING. TWO DRYWELL PRESSURE SWITCHES WERE FOUNO TO OPERATE AT 2 05 AND 2 02 PSIGe
___ _ __ ____________.__ _ hTW KM1YM7o f#UFLMsHD![iD HITLBcf%WVla [h[lOWp f#D PM*Mrl.P, /XM FO/\\GfkMiMQfCh CER fVD=AAhWOTH A
)
C ATE 1973 e
l O
O O
O 27/6/0000005-0000206//
169 CONTINUATION I PAGE 68 Q
TYPE
'O g
i
?
MEMO 2 PAGES. LETTER TO OlHECTORATE OF L ICEN SING (AEC). OCOTBER I T.
1973. DOCKE T 50-259. T YPE -owr.
MF G-G.E., AE-T V A AVAIL AVAILABILITY - NH C PUDLIC DOCE' MENT WOOM. 1787 H S T HE E T. WASHINGTON. D.
C.
20545. 8 08 CENTS /PAGE -
Q MINIMUM CHARGE S2.OOI
/)
l CATEGORY 8700003090000 EDITION 0051 CORP CCDE TVA l
Q COUNTRY A
g ABS TR ACT DURING IESTING, TWO DRYt, ELL PRESSURE SwI TCHES WERE FOUND TO OPERATE AT 2 05 AND 2 02 PSIG.
RESPECTIVELY.
THIS EX CE ED S THE 2 0-PSIG LIMIT. THE SwliCHES ARE STATIC-O-RING. MODEL 82N-AA4. WITH A l
NO CAUSE FOR THE DRIFT WAS FOUND.
THE SWITCHES wERE HECALIBRATED.
THE Q
REACTOH WAS IN STARTUP MODE.
g KEYWORDS HEACTON. owr 3 CONT A INMENT 8F AILUHE ; REACTOR PROTECT ION SYSTEM 8 INSTRUMENT CALInRATION81NSTRUMENT. SWITCH 3 TESI. SYSTEM OPER AS I L I T Y 8 t NS I RUME N T. ADNORMAL I ND I CA T I ON $ I NSTRUMEN T.
PRESSUNE S SET POINT 3 BROWNS FERRY I (owr)3 DRIFT 3 CIRCUIT CLOSERS /INTENHUPTERS 27/b/0000001-0000206//
170 i
ACCESSION NO.
00Z0084739
}
Il1LE DH IF T IN SET POINT OF PHESSURE SWITCH AT VERMONT YANKEE (AO-73-29) j Q CORPAUTH VENMONT YANKEE NUCLEAN PowCR CORPOR AT ION g
DATE 1973 j
f TYPE O
MEMO 2 PAGES. LETTER TO DIRECTORATE OF LICEN SING (AEC). OCTOHER 10. 1973. DOCKE T 50-278. TYPE--ewR.
'l Q MF G -G. E.. AE--E H A SC O g
AVAIL AVAILADSLITY - NHC PUOL IC DOCUMENT ROOM. 1787 H S T HE E T. WASHINGTON. D.
C.
20545. 408 CENTS /PAGE -
MINIMUM CHARGE S2.OOD CATEGORY 1700003090000 Q
EOITION 0050 gl i
COHP CODE APZ COUNTRY A
ABSTRACT DURING A TEST OF THE REACTOR PRO T EC T ION SYSTEM. A DRYwEll. HIGH-PRESSURE SwlTCH FAILED TO ACTUATE AT Q
THE NEQUIRED SET POINI OF 2 PSIG.
IN THE DE-ENENGIZED STATE IT ACTUATES TN REACTOR PROTFCTION SYSTEM g
IN A 3-001 UF 2-twlCE TYPE OF LOGIC.
AFTER THE SWI TCH W AS CALIBR ATED. IT OPERATED PROPERLY.
CONCLUDED THAT THIS wAS AN ISOLATED INSTANCE OF INSTRUMENT DRIFT.
KE.YwORDS RE AC TOR. owr &FAILUHE5HEACTOH PROTECTION SYST EM 8 I NST RUMEN T CALIBRATIONtINSTRUMENT. SWITCH 81EST. SYSTEM gf
' (.
OPERAHILITV3vEHMONT YANKEE ( HwH) 3 8 NSTRUMENT. ABNORMAL IND I C A T I ON I I NS TRUMEN T. PRESSURE 8 SET POINilDRIFT5 CIRCUIT CLOS LR S/ I N T E RRUP T E RS 27/6/0000005-0000206//
171
{.
ACCESSION NO.
0020083228 Q
TITLE SCHAM SET-POINT DRIF T ON CHANNEL 5 AT DRESDEN I COMPAUTH COMMONWEALTH EDESON DATE 8973
('
TYPE Q
g MEMO 2 PAGES. LET TER TO DIRECTORATE OF L ICEN SING (AEC). AUGUST 20. 1973. DOCKET 50-10. TYPE--owr. MF G-G.E..
l A E-HE CH T E L AVAll AVAILADILITY - NRC PUOLIC DOCUMENT ROOM. 1717 H STREET. WASHINGTON. D.
C.
20545. (00 CENTS /PAGE -
l Q
MINIMUM CHANGE
$2.003 g
I CATEGORY 1700003090000 EDITION 0050 COHP CODE DRS g
Q COUNTHY A
A851HACT DURING A FUNCT IONAL CHECK UN TN REACTOR POWER-GANGL MONITOR. CHANNEL 5 WAS FOUND TO HAVE A TRIP SCITING OF 1275.
THE UNIT WAS UPEHAVING A T F5 Mwk At THE TIME.
THE SEI POINI WAS ADJUSTED TO 1 RIP AT 18 T4.
THE POTENTIOMETER USE D TO CHANGE THE DIAS ON THE THIP AMPLIFIER HAD MOVED SLIGHILY.
THIS l-TUNN g
POTENTIOMETER WILL DE HE PLACLD W I T H AN 8-T UR N TYPL 10 NEDUCE SENS$1tVITY.
A PURCH ASING ENROH HAS g
DELAYED THE MODIFICATION.
O O
G G
27/6/0000003-0000206//
271 CONTINUATION 3 PAGE 69 Q
KEYWORDS HEACTOR, OwH DHESDEN I (OWR)1FAILUREIREALTOR PHOTECTION SYST EM 8 INST RUMEN T CALIHRAllONtFAILURE.
Q I NS T RUME NT i 1 NS TRUMEN T. SWITCHiMODIFI!ATIUNiTEST, SYSTEM OPERADILITY3 INSTRUMENT. ARNORMAL INDICATION!
INSTRUMLNT. POWEN HANGE 8 SET POINI 3 DHIF T IF A 5 LURE. COMMUN MODE Q
27/6/0000005-0000206//
172 Q
ACCESSION NO.
00Z0083202 TITLE DHIFT IN PHESSURE-SwlTCH SET POINT Al PILGHIM (AO-73-25)
CORPAUTH BOSTON EDESON COMPANY Q
'DATE 3973 Q
_J i
TYPE o
t Sct.
. f ro Mcecmncm amrton C3NR 000. 0 woo GXRCD* R0-6D0, T YPE-eMap I
a, e,u s tes s auenc. s ta each OL seesmoLw e s s e e mee o-o wnee...
.. -- w w 7
OtLAYED IME MOO R F I CA T ION.
(
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(?
4 27/6/0000005-0000206//
178 CDNTINUATION l PAGE 69 i
(y KEYWORDS HEACTOR, UNH3DHESDEN I (owr ) 8F A ILURE 4RE ALTOR PROTECT IDM SYST EM 8 INSTRUMEN T CALIBRATIDN3 FAILURE.
F) 8 INSTRUMENT 3 INSTRUMENT, S w I T CH 3 MOD I F I CA T I ON i T ES T. SYSTEM OPERAOILITYSINSTRUMCNT, ABNONMAL INDICATIONi INSTRUMENT. PO wE R R AHGE 8 SE T PO INI 8 DH IF T 8 F A ILURE. COM MUN MODE r) {1
()
27/6/C000005-0000206//
872 ACCESSION No.
0020033202 TITLE DH IF T IN PHESSURE-SwlTCH SET POINT AT P ILGR I M (AD-73-25) i CONPAUTH 80STON EDISON CO MP AN Y
()
DATE 1973
/)
TYPE O
I MEMO I PAGE. LETTER TO DINECTDR. DIRECTORATE OF LICENSING (AEC), AUGUST 84, 9973. D OCKE T 50-293. T YPE --B W R.
MF G--G. E..
AE-+E CHT E L
()
AVAIL AVAILADILITY - NRC PUBLIC DOCUMENT RDOM. 1787 H STREET. WASHINGTON. D.
C.
20545. 808 CENTS /PAGE --
()
CATEGORY 1700008090000 l
EDITIDN COSO Q
COHP CODE AAA
.}
COUNTRY A
Af tS T R ACT DURING A TEST OF THE REACTOR H IGH-P RESSURC S E G NALS. I DF 4 B A NK SD ALE MODEL B2T-Al2SS PRE SSURE SWITCHES t
ACTIVATED AT 3098 PSIG, WHICH EXCEEDS THE loss-PSIG LIMIT.
THE REACTOR WAS AT 954 POWER.
THE SwlTCH
(}
WAS RECALIOR AT ED.
}
KEYWORDS HEACTOR, UwR8FAILUREiHEACTOR PROTECTIDN SY STEM 8 I NSTR UMEN T CALIBRATIDM8tNSTRONENie SWITCH 81ESie SYSTEM DPER AH ILI T Y 3 INST RUME Ni e ADH DHM AL I NDIC ATION IPI LGRI M 1 (OwRilINSTRUMENT. PRESSURE 8 SET POIN TiORIFT
()
27/6/0000004-0000206//
173
.)
ACCESSIDM NO.
0020081508 TITLE SETPOINT DRIFT IN PRESSURE SWITCHES AT DRE SDEN 3 COHPAUTH COMMONWEALTH EDISDN CO.
(p DATE 1973 3
TYPE Q
MEMO 6 PAGES. LETTER TO DIRECTORATE OF L ICE NSING (AEC). JUNE 22. 3973. DOCKE T 50-249. T YPE --BW R,
MFG--G.E.,
AE--SGT. & LUNDY (y
AVAIL AVAILABILITY - NRC PUBLIC DOCUMENT RDOM. 1717 H S T RE E f e WASHINGTON. D.
C.
20545. (OB CENTS /PAGE==
qg MINIMUM 'HARGE S2 00)
CATEGORY 17000080%3000 EDITIDN 0049
(}
COUNTRY A
]g AnSTRACT DURING TESTING W11H THE RE ACT DR OPERAflNG AT 1800 Mwie MOTH LOW-VACUUM SCRAM-BYPASS SWITCHES WERE FOUND TO AC T IV AT E AB OVE THE 600-PSIG SE1 POINT LIMIT.
DNE HAD DRIFIED 10 609 PSIG AND THE OT HER TO 633.
THESE Sw l1 LES WILL TRIP THE REACTOR IF IHE RE ACION PRESSURE GOES ABOVE THE SETPOINT AND THE
(}
CONDENSEN VACUUM HAS NOT REACHED 23 IN. DF ME R CUO Y.
THE SwlTCHES WERE RE CKLI BR A T ED.
rg KEYWORDS REACTOR. DwR3FAILURElREACTOR PHOTECTION SYSTEMiDRESDEN 3 ( BWR 3 i lNSTHUME N T CALIBRATION 3 FAILURE.
INSTRUMENT 8 INSTRUMENT, SWliCH8 TEST, SYSTEM DPERASILITYilNSTRUMENie ABNORMAL INDICATION 8 INSTRUMENT.
PRESSUREiSLT POINT 2 7/6 /000 000 5 -0C00206//
174 ACCESSION NO.
00Z0083496 TITLE DHIFT IN SET POINT OF PO WE R -R A NGE MONITOH AT DRESDEN I
(}
CORPAUTH COMMONWEALTH EDlbON 00.
qg DATE 1973 TYPE O
MEMO 4 PAGES. LETTER TO DIRECTORATE OF L I CE NSING EAEC), JUNE 29. 1973. DOCKE T 5 0-I C. T Y PE --B WR. MF G--G.E..
g AE--UECHICL 0
AVAIL AVAILAntLsIY - NRC PUBLIC DOCUMENT RDOM. 17 8 7 H STREET. WASHINGTON. D.
C.
20545. (08 CENTS /PAGE --
MINIMUM CHLRGE S2.00)
CATEGORY 1700003090000
()
i
()
EDITION 0049 CDRP CDDE DRS
()
()
C)
GD 27/6/0000001-0000206//
174 CONF 3NUATIDN I PAGE 70
(}
COUNTRY A
gg ABSTRACT DUNING CHECKING OF T HE R EA C T OR-POW E H mR A NGE MON I T OHING IN ST RUMEN T A T I DN, A CHANNEL HAD A TRIP SETTING OF 824X. WHICH EXCEEDED THE LIMIT OF 120X.
THE REAC1DR WAS UPERATING AT 300 MWE.
THE SET POINT WAS READJUSTED.
T HE PRUBLEM APPEARS TO BE IN THE TRIP ADJUST PU IE N T I DME T E R.
A SLIGHT M OVE ME N T CHANGES THE
(}
SET POINT.
IT IS PLANNED TO REPLACE THE l-TUNN POIEN T IOMh TERS WITH 3-1 URN DNES TO REDUCE SENSITIVBTV.
{g ALSO. THE INSTRUMENTS MAY BE AGINGe AND REPLACEMENT OF THE ENTIHE CHASSIS IS SERNG CONSIDERED.
KEYWORDS RCACTDH. DwR8DRESDEN 1 (BWR38 FAILURE 8HEACTOR PROTECTIbH SYS T EM 31NS TRUME N T CALISHATIONilNSTRUMENT, SwliCHiMODIFICATIONITESie SYSTEM GPERASILITY&lNSTHUMENie ABNDHMAL ENDICATIONIINSTRUMENT, POWE R M ANGE 5 l
3 f SET PO INI 8 E F FE CT. AGE
()L 4) mavxnman-ccrrmw
-nm
I g,
uo... u..
CORP CODE DRS
{
(
)
,O
')
f 27/6/0000003-0000206//
E74 CONTINUATION 4 PAGE 70
>l (}
COUNTRY A
r}
I ASSTRACT DUR ING CHECKING OF T HE REAC TOR-POW ER-R A NGE MONITORING INSTRUMENTATION. A CHANNEL H AD A TRIP SFbTING OF I;
I24E. WHICH CACEEDED THE LIMIT DF 220E.
THE REACTOR WAS OPERATING AT 100 MWE.
THE SET POINT WAS RE ADJUS TLD.
T HE PRUOLEM APPEARS TO DE IN THE TRIP ADJUST PUIEN TIOMETER.
A SL IGHT MOVE MENT CHANGES THF l
3
/) j.
('
SET POINI.
IT IS PLANNED TO REPLACE THE I-TURN POTENTIOME TERS WITH 3-1 URN DME S TO REDUCE SENSITIVITV.
ALSO. THE INSTRUMENf5 MAY BE AGING. AND REPLACEMENT OF THE ENVIRE CHASSIS IS SEING CONSIDERED.
KE YWORDS RCACTOR. DwR&DkESDEN I (UwR)iFAILURE8 REACTOR PROTECT EDN S Y S T E M i lNS TRU ME N T CALIBRATIO48tNS1RUMENT.
SW 3 f CHIMODIF ICAT IONI TEST. SYSTEM OPERABILITY 3 INSTRUMENT. ABNORMAL INDICATION 8 INSTRUMENT. POWER RANGE 8 9
()
(}
5 I
27/6/0000001-0000206//
875 1
ACCESSION NO.
0020000278
(%
TITLE FAILURE OF VACUUM SwtTCH AND LEAK IN STACK MONITOR AT PILGRIM (AO-73-ll)
()
CORPAUTH OOSTON EDISON CO.
DATE 3973 TYPE O
(}
MEMO 2 P AGE S.
LETTER TO DIRECTORATE DF L I CE NSING (AEC). APRIL 9. 3973. DOCKET S0-293. T YPE--BwR.
MFG--G.E..
,}
l A E--HE CH T E L l
AVAIL AVAILADSLITY - NRC PUBLIC DOCUMENT ROOM. 1757 H STREET. WASHINGTDM. D. C.
20545. (OS CEN T S /P AGE --
(}
CATEGORY 17000030900005850000
') )
E D I TI ON 0047 l
CORP CODE AAA COUNTRY A
(%
ASSTRACT SHURTLY AF T E R STARTUP WHILE AT 502 POWER. DNE OF TWO TURO I NE-CONDENSE R Low-VACUUM SW I T CHE S F A I LED.
()
THIS CIRCUIT IS A F A I L-S AF E DESIGN.
A JUMPER WAS PLACED ARDUND THIS CIRCUIT AND THE SWITCH WAS REPLACED. *** THE INDI C A TED STACK GAS SAMPLE ACTIVITY WAS LDwER THAN EXPEC TED.
THE SA MPLE WAS SEING DILuiED FROM AIR LEAKING IN THROUGH THE CHARCOAL / PARTICULATE FILTER ASSE8ESLY SEAL.
THE A SSE MBLY HAD G
BELN BUMPED DURING MAINTENANCE ACIIV115ES DURING THE SHUIDOWN.
WHEN THE F ILTER WAm REPOSITIONED. THE q
READING RETURNED TO EXPEC T ED LEVELS.
REYWORDS REACIOR. BwR 3F A ILURE IMONI T DR. biACK8 REACTOR PROTECTION SYST EM 3 S AMPLING t I NS T RUMENT. SWITCHiorF GAS 8 P ILGRI M 8 (BWRlilNSIRUMENT. PRESSURE 8LEAKiOYPAS$8 REACTOR S T AR T UPiF IL TER S 27/6/0000001-0000206//
876 f
ACCESSION NO.
0020079063 T I TLE CON T R DL ROD DR I VE SELECTOR SWITCH F AILURE AT OYSTER CREEK I l
(fe CORPAUTH JERSEY CONTRAL PUwER AND LIGHT CO.
() 'l DATE 897J TYPE Q
)
ME MO I PAGE. LETTER 10 DIRECTORATE UF REGUL A TORY OPER AT IONS ( AEC ). fen.
8.
3973. DOCKE T 50-2 3 9. 1YPE--HwR.
AVAIL AVAILAOILITY - NRC PUULIC DOCUMENT ROOM. 1787 H STREET. WASHINGTON. D.
C.
20545. (08 CENTS /PAGE --
r}
(,
MF G --G. E., AE--O URNS ANO ROE MINIMUM CHARGE S2.OO)
CATEGORY 1700005090000
(}
EDITEDN OO4F i)
CORP CODE JCP COUNTRY A
ADSTRACT DURING A REACTOR STARTUP. 20 CONTROL RODS THAT HAD BEEN WITHDRAWN COULD MIT BE MOVED BY MANUAL CONTROL.
()
A JUMPLR WAS I NS T ALL ED AND ALL ROOS INSENTEO.
THE SELECTOR SWI TCH F AILED IN THE DPEN POS I T ION.
()
PRE VEN T ING ALL RODS DUwNSTREAM DF NUMOER 14-18 FROM HEING MOVED.
THE SCRAM FUNC T I ON WAS OPERAHLE.
THE SWITCH wAS REPLACED.
KE Y WORDS REACTORe HwHICONTROL SYSTEMIOYSTER CREEK (UwR)tFAILURE, I NS T RUM ENT i lNST RUM EN T. SWITCH 3 REACTOR STARTUPi
()
CONTROL ROD DRIVES; FAILURE
()
27/6/0000001-0000206//
177 ACCESSION NO.
0020079058
()
TITLE SETPOINI DRIFT IN VACUUM SWITCHES AT OUAD CITIES 8 AND 2 gg CORPAUIH COMMONwE ALIN EDISON 00.
' 4)
CD
()
CD 27/6/0000005-0000206//
177 CONTINUATIDN I PAGE 75
()
DATE 1973 (g
TYPE O
MEMO 2 PAGES. LETTER TO DIRECTORATE OF L ICE NS ING (AECD. MARCH 2.
1973. DOCKE T S 50-2S4 /265. T YPE --R wR.
MFG--G.E..
AE--SGT AND LUNDY
()
AVAIL AVAILADILITY - NRC PUULIC DOCUMENT ROOM. 1787 H STREET. WASHINGTON.
D.
C.
20545, 108 CENTS /PAGE --
Qg MINIMUM CHANGE
$2 003 CATEGORY 8700008090000 EDITIDN 0047
()
CORP CUDF DRS
()
CDUNTRY A
MM
@M IN32' SI.K PRESSURE S,w l T CHES_ MON,I T OR I NGJH,E CONDENSER VACUUM OgE EATE Q N
(g ISELk bttPUSNI UH ar a em WALuUM betSLMtb A8 uunu Lasaca e m.w a CORP 2UTH COMMONwE ALT H E DI SON 00.
(
)
(3 27/6/0000001-0000206//
87F CONTINUATIDN I PAGE 78
(}
DATE 8973
{}
TYPE o
MEMO 2 PAGES. LETTER TO DIRECTORATE OF L I CE NSING (AEC), MARCH 2.
3973. DOCKE TS 50-254/265. T YPE --O wR.
MF G-G.E.. AE-SGT AND LUNDY
(}
AVAIL AVAILADELITY - NH C P UUL IC DOCU ME N T ROOM. 1717 H STREET. WASHINGTON. D. C.
20545. 808 CENTS /PAGE --
r}
MINIMUM CH AN GE S2.003 CATEGORY 1700003090000 EDITIDN 0047
()
CORP CODE ORS e)
COUNTRY A
AUSTRACT DURING TESilNG. SIX PRESSURE Sw!TCHES MONITORING THE CONDENSER VACUUM OPER ATED AT GREATER THAN THE LIMIT OF 23 IN. OF H G.
THE SE T POIN T WAS INCHE ASED TO 23.6 IN. TO COMPENSATE FOR DR I F T. ALL SWITCHES
()
wENE HECALIONATED.
d)
KEYWORDS HEACTOR. B wR ;F AI LURE iHE ACTOR PROTECTION SYST E4 i lNSTR UMEN T CALIBRATIDN$ INSTRUMENT. SwlTCHITEST. SYSTEM DPERAB I LI T V 3 DU AD CITIES I d BwR l t INS THUMENT. ADNDRMAL INDICATIDNilNSTRUMENT. PRESSURESSET POINT 800AD ClilES 2 (BwH) 27/6/0000005-0000206//
IF8 ACCESSION NO.
0020078299 TITLE DRIF T IN SE T-POI NT OF VACUUM SWITCH AT DRESDEN I
(}
CORPAUTH COMMONWEALTH ED I SON CO.
()
DATE 8 9 T3 TYPE Q
MEM9 2 PA GE S, LETTER TO DIREC? ORATE OF L I CE NSING (AEC). J AN. 35, 1973. DOCKET SO-23F, T YP E--Ow R. MF G--G.E..
()
AE--SGT+LUNDY
.}
AVAIL AVAILABILITY - NRC PUBLI C DOCUMENT ROOM e 1787 H STHEET. WASHINGTON. D.
C.
20S45. (OS CENTS /P AGE --
MINIMUM CHAR GE
$2.003 CATEGURY 8F00003090000
()
EDITION OOS2
,}
CORP CDOE DHS COUNTRY A
ABSTRACT DURING A HDUTINC CALdORATION. I OF 4 CONDENSER-low-VACUUM SCRAM Sw ITCHES T RIPPED AT 22.45 IN. INSTEAD
()
OF THE LIMIT OF 2J IN.
THE SWITCH WAS RESET.
SPECIFICAllDNS FOR THIS MODEL OF SWITCH HAVE A SETPOINT
{}
ACCURACY OF
+-0.JF IN..
ALMOST TwlCE THE TULERANCE THAT THE STATION IS NDW ALLOWING.
STA180N LIMITS wlLL BE CH AN GE D TO ALLOW FDN DRIFT WITHIN I N S T RU ME N T ACCUHACY.
KEYWORDS HEACIOR, DwH&DHESDEN I (DwR liF A ILURE 8HE ACTOH PROTECTION SYSTEM $ INSTRUMENT C AL IBR AT I ON 8 8 MS TRUMENi e (p
SwlTCHtHELIABILITY. COMPONEN T 8 7ES T, SYSTEM DPE R AB I LI T Y 8 I NS T RUME N T. ABMORMAL I NDI CA T ION 8 I NS T RUMEN T,
()
PHESSURC; SET POINT 27/6/0000001-0000206//
879
(}
ACCESSION NO.
0020077964
()
T I T LE LO W -CONDE N SE R-V A CUUM SCRAM-Sw!TCH-DIAPHRAM LEAK AT MONTICELLO C ORPAUD1 NURTHERN STATES POWER COMPANY DATE 1973
,}
C)
TYPE o
MEMO I PAGE, LETTER TO DIRECTORAGE OF L I CEN S I s 'G (AEC). JAN. 23, 1973. DOCKET 50-263. T Y PE --BwR. MF G--G. E. e AE--BECHIEL AVAIL AVAILABILIIY - NRC PUBLIC DOCUMENT ROOM. 1717 H STREET, WASHINGTON, D.
C.
20545. ( 08 CEN TS/P AGE --
MINIMUM CHAN GE S2.00)
.};
{}
CATEGORY 1700005090000 EDITION 0046 CORP CUDE NSP
(}
COUNTRY A
{} >
A05T R ACT DURING ROUTINC T E S S I NG.
I OF 4 low-CONDENSER-V A CUUM SCRAM SwlTCHES WAS FDUND TO HAVE A SM ALL LE AK IN THE METAL DIAPHRAGM CAPSULE.
THE INSTRUMENT W AS REPLACED.
CAUSE CF LEAK NOT YE1 DETERMINED.
THE LEAK DID NOT CHANGE THE SETPOINI.
()
KE YWDRDS HEACTOR, HwR EF AILURE 8RE AC T OR PHOTECTION SYSTEMi!NSTRUMENie SWITCH 8 TEST, SYSTEM OPE RA BI LI T V I MONT I CELLO gg (BWR)3 INSTRUMENT, PHESSUHEtLEAK
()
dh
()
EP 27/6/0000001-0000206//
180 PAGE 72
()
ACCESSION NO.
0020077988 gg fliLE SET POINI DHIFT IN OIL PRESSURE SWITCH AT QUAD CI T IES I CORPAUTH COMMONWEALTH EDISON COMPANY DATE 39F3
()
TYPE Q
(g MEMO 2 P A GE S, LETTER TO DIRECTORA3E OF L I CE NSING (AECle JAN. II. 1973. DOCKET S0-254, TYPE--owr.
MFG--G.E..
A E --SG T AND LUNDY AVAIL AV A I LABI L I T Y - NRC PUBLIC DOCUMENT H UO M. 1787 H STREETe WASHINGTON. D.
C.
20545 (OS CENTS /PAGE --
()
MINIMUM CHA N GC S2.OOD
()
CATEGORY 1700005090000 14DfhlfD FMD
n o w ua
~.~..u.
u..
w.
. n ~.. w.
..~.
..we a..-..........~.
y, (3 WR l l l NS TIUMEN T, PHESSUR E 8 Leon a
e
()
- )
(?
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27/6/0000003-0000206//
180 PAGE 72 ACCESSION NO.
0020077911
{}
(} f TIILE SE T POINI DRIFT IN O IL PRESSURE SWITCH AT GUAD CIllES I CORPAUTH COMMONWEALTH EDISON COMPANY DATE E973
(}
TYPE O
()
MEMO 2 P A GE S e LETTER TO DIRECTOHATE OF L I CE NSI NG IAEC). JAN. II. 1973. DOCKE T S 0-254. TYPE--RWR. MFG--G.E.e AE--SGT AND LUNDY AVAIL AV A I LA B I L I T Y - NRC PUBLIC DOCUMENT RDOM. 1787 H STREET, WASHIPtGTON. D.
C.
20545. EOS CENTS /PAGE --
(}
i CATEGORY 1700003090000 gI EDITION 0046
.l C OH P CODE DRS
(}
COUNTHY A
{}
4
{
AlsSTR ACT DURING A TEST. THE SETPOINT DN 1 DF 4 EHC OIL-PRESSURE SWI TCHES HAD DRIFTED BELOW LIMITS - FROM 900 PSIG TO 890.
IT WAS HEC ALIBR A TED.
BEC AUSE DF DRIFT OF THESE SWITCHESe THEY ARE BEING CALIBRATED MONTHLY INSTEAD OF QUARTERLY.
(T KEYWORDS-HEACIOR. HWR 8F AILURE $ REACTOR PROTECTION SYSTEMilNSTRUMENT CALIBRATION 3 INSTRUMENT. SWITCHITE ST, SYSTEM
()
OPERAHILITYiOUAD CITIES S E BWR ) 3 t NSTHUMENi e ADNORMAL INDICATION 3 INSTRUMENT. PRESSUREISET POINT 27/6/0000001-0000206//
Ist (T
ACCESSION NO.
0020077208
()
TITLE DHIFT IN PHESSURE-SWITCH SEIPOINI AT QUAD CITIES 2 CDHPAUTH COMMONWEALTH EDISUN CO.
DATE 1972
(}
TYPE O
()
MEMO 2 PAGES. LETTER TO DIRECTOMATE OF L ICE NS ING (AEC3. DEC. 27. 1972. DOCKE T 5 0-265. T YPE --B W R. MFG--G.E..
AE --SG T AND LUNDY AVAIL AV A I LABI LI T Y - NHC PUOLIC DOCUMENT ROOM. 1787 H STREET. WASHINGTONe D. C.
20545e (OS CENTS /PAGE --
(}
MINIMUM CHA R GE S2.OO)
()
CATEGORY 1700003090000 ED8ilON 0046 CORP C UD E DHS
(}
COUNTRY A
()
AUS TR ACT DURING A ROUl 8 NE CAL EHNAT ION OF THE E.
H.
C. CONTROL FLUID LOW PRE SSUR E SWITCHES. THREE ACTUATED HE TWEEN 880 AND 890 PSIG INSTEAD OF ADOVE 900.
THE SWITCHES WERE REC AllHR ATED.
KEYWORDS REACT 04, BWR 8F AILURE lRE ACTOH PROTECTION SYST E M 8 I NS TR UMEN T CAllOHAT I ON & I NST RUMENT e SWITCHITEST. SYSTEM (T
DPERADELITV800AD CITIES I ( H WR ) 3 3 NS T RUMENi e ABNDRMAL INDICAT ION 3 INS TRUMENT PRES SUREI SE T POINT f) 27/6/0000005-0000206//
382 ACCESSION NO.
0020076549
(}
TliLE SWITCH SETPOLNT DRIFT PR OBLE MS AT OUAD CITIES 2
()
COMPAUTH COMMONWE ALTH EDISON CD.
DATE 5972 TYPE O
(}
MEMO 3 PA GE S, LETTER 10 DIRECTORATE OF LICEN S ING EAEC). DEC. le 1972. DOCKE T 50-265. TYPE--BWR e MF G--G.E. e 4}
A E --S G T + LUNDY AVAll AV AILAntLIT Y - NRC PUOLIC DOCUMENT ROOM. 1787 H SIREET. WASHINGTON. D. C.
20S45, 308 CENTS /PAGE --
()
CATEGORY 37000030900008310000
()
EDITION 004S C ORP C00E DHS COUNTRY A
(}
ABSTRACT DURING HOUTINE C ALIGH ATI ON e TWO CONDENSER LOW-VACUUM-PHESSURE SWI T CHE S WER E FOUND TO HAVE DRIFTED 10
(}
22.3 IN. AND 22 4 IN. OF HG.
limit IS 23 IN.
SWITCHES ARE B ANKSD ALE MUDEL Dii-H184S.
ALSO FOUND SET T INGS ON THE MAIN-STEAM-LINE LO W-P R E S$UN E SWITCN25 HAD DRIFIED 70 8 38 AND 844 PSIG.
SW IT CHES ANC U ARKSD ALE MUDEL 02T-Al2SS.
TRIP SETTINGS ARE NOW BEING REVIEWED 10
()
DEIEHMINE NEW SE TPOI NIS WHICH WOULD AL LOW DR IF T WITHIN SPECIF I ED ACCURACY BUT WDULD NOT EXCEED (g
TECH-SPEC VALUL.
()
(I
()
C>
??/6/0000005-0000006//
182 CONilNUATIDM 1 P AGE 73
()
KEYWORDS REACIDRe BWH8 REACTOR PHOTECTIDN SYST EM 3 INST RUM EN T CALIBRATIONiPROTECTION SYSTEMiFAILUREe INSTRUMENT 4 (g
INSTRUMENT. SW I T CH 3 I NS TRUMENT, ADHDHMAL INDIC A TI ON 3 R NST kUMEN T. PRESSURE 8 SL T PO INT 80UAD CI T IES 2 48WR)$
FAILUNE
()
27/6/0000003-0000206//
183
()
ACCESSION NO.
0020076164 TITLE SCH AM DISCHARGE VOLU ME-LEVEL SW I TCH MALFUNCT IUN AT VERMONT YANKEE COMPAUTH VEHMONI VANKEE NUCLEAR POWER COMPOH AllUH J ()
DATE E 9 72
()
TYPE O
NU FLIZP b NMlDFC TTilEDQAC&~YTn to rtncmnncM WXEDn nv o 80 09720 EMNET S0-278. T YPE-B WR. MFG-G.E..
4/
YtC;t AEC at Ut;*""'"'-
a" "-
S
()
)
2 F/6/D00000 5 -0000 206//
382 CONTINUATIDN I P AGE 73
(}
KEYWORDS REACfDR. BWR8 REACTOR PHOTECTIDN SY S TEM 8 I NST RUM EN T CALIBRATIONtPROTECTIDN S YSTE M 8 F A ILUR E, INSTRUMENT!
f) g INSTRUMENie SWITCH 38MSTRUMENie ABNORMAL INDICATIDN3ENSikUMENT. PRESSURE E SE T POINitOUAD CIftES 2 towRIi FAILUHE
(}
27/6/0000005-0000206//
183 e)
ACCE SS 10N NO.
00200F6364 TITLE SCH AM DI SCH ARGE VOLU ME-LE V E L SWITCH MALFUNCTION AT VERMONT YANKEE CUHPAUTH VEHMONT TANKEE NUCLEAR PUwER CURPOR ATION
(}
DATE 1972 s)
TYPE O
I MEMO I PAGE. LETTER 10 DI RE CT OR AT E DF LI CENS I NG ( AEC3. NOV.
8.
1972. DOCKET 50-213. Y YPE--BWR e MF G--G.E..
t t
A E --E U A SCO l (}
AVAIL AVAILABILITY - NRC PUBLIC DOCUMENT RDOM, 8717 H S1 HEE T.
WASHINGTUN. D.
C.
20545. 808 CENIS/PAGE --
{g M I N I MU M CH AN GE S2.OO)
CATEGDAY 1700008090000 l
EDITION 0045 l p CORP CODE AP2
]
suva NY A
I ADST ACT DURING TESTING. THE SCHAM D I SCHAR GE VOLUME HIGH-WATER-LEVEL SWITCH FAILED TO ACTUATE AT THE SETPOINT.
(}_
CAUSE ATTRIBUTED TO CORH OS I O N-PRODUCT ACCUMULATIUM DN THE SW I TCH FLO AT CHAMBER.
CHAMBER WAS CLEANED AND F LUSHE D AND SWITCH VERIFIED TD BE OPER ADLE.
[)
KEYWDRDS HEACTDH. DwR 8CORkuSI ONiF AILUNE. INSTRUMENf 8 CRUD 8 3 NSTRUNENT. LIOUID LEVELIINSTRUMENT. Sw I TCH 3 F A ILURE,
SCHAM ME CH AN I S M 5 VtR M ON T YA NK EE (DwR I &F A ILURE
(}
27/6/0000001-0000206//
384
.}
ACCESSION NO.
002007S400 TITLE REACTUR CODLANT LEVEL SwlTCH SET POINI DUT OF LIMITS AT MILLSIDNE POINT COH PA U TH THE MILLSTONE POINT COMPANY (4
DATE 1972 gg TYPE O
ME MU -
DDCKET-50245-161 +.
1 PAGE. LETTER - M I LLS T ONE PDIN T COMPANY TO DIVISION OF COMPLIANCE ( AECl -
SEPTEMuEH 83. 4972. DOCKET 50-245. T YPE --e wR. MrG--G.E..
A E --EB ASCO
()
AVAIL AVAILADSLITY - NATIONAL 1E CHNICAL I NFOR M A T IDN SEHVICE. U. S. DEPARTMENT OF COM ME R CE, SPRINGFIELD, VA.
gg 22163 CATEGORY 1F00003090000 EDITION 0044 p
COHP CDDE AIG g
COUNTHY A
ADSTRACT DURING A TEST DN T HE REACTOR LDW-L OW WATER-LEVEL THIP, UNE SWITLH TRIPPED AT 84.3 IN. ABOVE THE ACTIVE FULLe WHICH IS OUT OF TE CH-SPEC LIM I TS.
THE PROBLEM IS RELATED 10 THE CALIBRATION DEVICE. WHICH WILL (y
UE MODIFIED DURING T HE CURRENT REFUELING DuiAGE.
gg KEYWDRDS REACION. HwR iF AILURE 3RE ACT OR PHOTECilDN SYSTEM &lNSTRUMENT C ALIB R Al lDN 3 PROT EC T 10M S YS TE M 51NST RUME NT,
LloulD LEVEL 4 INSTRUMENT. SWITCHiTEST. SYSTEM OPERABILITY 3 SET POINT 4MILLSIONE I (BWR)
(}
27/6/0000001-0000206//
185 gg ACCESSION NO.
0020075068 TITLE SCHAM-SwlTCH SE T PO IN T -OR IF T PRDOLEMS A1 DRE SDEN 2 AND 3 CORPAUTH CUMMONwEALTH EDI SON COMPANY
()
DATE 1972 gg TYPE O
MEMO DOCK E l-5023 7-2 64 4 2 PAGES. LETTER - CDMMDNwE ALTH ED ISON COMPANY TO DIRECTORATE OF LICEASING ( AEC) -
SE P T E MOER 88. 3 9 T2. DOCKE T 50-237. 1 Y PE --O wR. MF G--G. E. e A E --SG I + LUNDY
{p AVAll AV AIL ABILI T Y - NATIONAL TE CHNIC AL I NFOR MA T I ON SERVICE. U.
S. DEPARTMENT OF COM ME R C E, SPRINGFIELD, VA.
(g 22361 CATEGORY 8700003090000 EDITSON 0044
()
CDH P CDDE DRS
{}
COUNTRY A
()
(I
()
3 27/6/0000005-0000706//
185 CONTINUAilDN 3 PAGE 74
(}
AHSTR ACT DURING A CALIHRAilDN CHECK OF THE ELECTROHYDR AUL IC-CONTROL-OIL LOW-PRESSURE SCRAM SwlTCHES. 5 OF 6 WERC (g
FOUNO 10 HAVE DH IF TE D BE YOND LIMITS.
T HREE SWITCHES WERE ON UNIT 2, AND T WO WEHE ON UNIT 3.
THIS IS PAHi DF A CDNTINUING PRDOLEM wHICH IS ST ILL UNDER INVLSilGATEGN.
KEYwDRDS RE ACTOR. OwREREAC804 PHO TE C T I UN SYSTEM E DHE SDEN 3 (SwH ) 3 I NST RUME N T C ALI DR AT E DM;F A ILURE, INSTRUMENT 3
(}
DHESDEN 2 (BwH)3 INSTRUMENT. SWITCH 8 SET PolNT3FAILUNE (g
27/6/0000005-0000206//
386 ACCESSION NO.
OO2OO FSOJ4
)
()
T I T LE TURHINE-CONINOL-VALVE LIMIT-SWITCH INOPERATIVE Al DMESDEN 3
()
CORPAUTH CUMMONwCALTH EDISUN CO MP ANY 1
DALE 1972
sues.- um u n.,
ye COUNI,"t Y A
e e
O O
O O-27/6/0000005-0000206//
185 CONTINUATION I PAGE 74 p
ABSTRACT DURING A CALIBRATION CHECK OF THE EELC TROHYDR AUL IC-COHiROL-CIL LOW-PHESSUR E SCRAM SWITCHES. 5 OF S WERE
/) -
FOUNO TO HAVE DH IFIE D BE YONO LIMITS.
THREE SW11CHES WERE ON UNIT 2.
AND TWO WERE ON UNIT 3.
THIS IS PART OF A CONTI*4UING PROSLEM WHICH IS STILL UNDER INVESilGATION.
Ql KEYWORDS HE ACIOR. SwH8REACIOR PHOTECTION SYS TE M i DHE SDEN 3 (SWH ) 3 I NST RUMENT C ALIBR AT ION 8 F A ILURE. INSTRUMENig
/T DRESDEN 2 (SwH)35NSikUMENT. SWITCH 8 SET POINT $F AILURE 27/6/0000005-0000206//
386 ACCESSION NO.
0020075034 Q
TITLE TURRINE-CONTROL-VALVE LIMIT-SulTCH INOPERATIVE At DRESDEN 3 g
CORPAUTH COMMONWEALTH EDISON COppANY DATE 5972 l
TYPE Q
Q MEMO DOCKET-SO249-160 +. 2 PAGES. LdTTER - COMMONWEALTH EDISON COMPANY TO DIRECTORATE OF LICENSING (AECI -
r) i, SEPTEMBEM 20, 1972. DOCKET S0-249 T YPE -U wH.
MFG--G.E.,
AE-SGT 4 LUNDY AVAIL AVAILABILI1Y - NAllONAL TECHNICAL INFOHMATION SERVICEe U. S. DEPARTMENT (F COM ME R CE. SP9t I N GFI E LD. VA.
22161 Q
CATEGORY.
1700003090000 g
EDITION 0044 CORP CODC DHS COUNIHY A
Q AubiRACT DURING A TESI. THE LIMIT SWITCH OF A TUROINE-CONTROL VALVE FAILED TO ACTIVATE A SCRAM CIR CU I T.
THE
.}
l MOUNTING UOLTS HAD WORKED LOOSE. ALLOWING INE SwllCH 30 SHIFT OUT OF POSIIION.
THE LIMIT SwlTCH w t.S ADJUSTCDe TIGHTENEDe AND TESTED SATISFACTORILY.
KEYwoHDS REACTOHe llwH &R E AC I OR PROTECTION SYSTEMIDHESDLN 3 (BwR)3 PROTECTION SYST E M IF A ILURE, INSTRUMENit Q
INSTRUMENTe SWITCH 31EST. SYSitM OPEHABILITY3 FAILURE. INSIALLATION ERHOR3 TURBINE 8VALVESIFAILUHE g
27/6/0000005-0000206//
187
)
ACCESSION NO.
00Z007S014 Q
TITLE PROTECTION-SYSTEM SWITCHES INOPERABLE AT VERMONT YANKEE g
CONPAUTH VERMONT YANKEE NUCLEAR POWEN COHPOHATION DATE E972 TYPE Q
Q MEMO DOCKE T -SO217-98 +.
2 PAGES. LETTER - VERMONI YANKEE NUCLl' AR PO WE R CDR POR A T ION TO DIRECTDRATE OF g
LICENSING (AEC) - AU GUS T 2 S e 3972. DOCKET 50-271. TYPE--BwHe MF G-G.E.. AE -EB ASCO AVAll AVAILAORLITY - NATIONAL TECHNICAL INFDR M A TI ON SEHVICE. U. 5. DEPARTMENT OF COM MERCE e SPRINGFIELDe VA.
22168 Q
CATEGORY 1700003090000 g
EDITION 0044 CORP CODE APZ COUNTRY A
Q ABbi H ACT UPON UECOMING AW ARE OF A PROBLEM DISCOVEHED AT ANOTHER BOILING WATER REACTOR, A DETAILED INVESTIGATION g
WAS CONDUCIED OF ALL DRY-wELL PHESSURE PENE1 RATION TAPS.
THREE DHY-WELL PRESSURE Sul TCDES WERE FOUND INUPE R AHLC AS A RE SULT OF OPEN-ENDED IEES IN THE 3/8-IN. TUGING BETWEEN CONTAINMENT ISOLATION VALVE AND PRESSURE SwifCHES.
UNE WAS ASSOCIATED WITH AUTOMATIC DEPRESSOHIZATION SYSTEMe UNE WAS IN THE LPCI Q
SYSTEMe AND UNE PHOVIDED A SCRAM SIGNAL ON HIGH DRY-wELL PRESSUME.
TEES WERE PLUGGED AND SWITCHES
]
l OPERATED PROPERLY.
KEYWORDS HEAC10He HwH3CONTAINMENi8 REACTOR PROIECTION SYSTEM 8 PROTECTION SY ST EM 81 NSTM UMEN T. SwlTCHIVERMONT YANKFE (OwRI4 FAILURE. INSTALLATION ERROR $INSTHUMENTe PHESSURE8 FAILURE 27/6/0000005-0000206//
188 ACCESSION NO.
0020073638 TITLE REACTOR LEVEL SWI TCH SETPOINT OH IF T AT MILLSTONE I O
COMPAUTH THE MIttSTONe POiNi COMPANY o
DATE 8972 TYPE Q
MEMO DUCKET -5024 5-l bo 4 I PAGE. LETTER - T HE M ILL ST ONE POINT COMPANY 10 DIRECTORATE OF LICENSING (AEC) -
Q AUGUST 18. 1972. DOCKET S0-245. T YPE-O wH e MF G-G. E.. AE--EBASCO g
AVAIL AVAILAtllLITY - NATIONAL iECHNICAL INFORM A T ION SEhWICE. U.
S. DEPARTMENT OF COMMERCE, SPRINGFIELDe VA.
O O
O O
27/6/0000003-0000206//
388 CONTINU4flON I PAGE 75 Q
22168 g
CATEGORY 1700003090000 EDITlON 0044 COMP CODE AIG Q
COUNTHY A
g ABSTMACT DURING A SUHVE RLLANCE TEST. THE REACTOR LOW-LEVEL SW I TCH ACTUATED AT 824 INCHESe WHILE THE SE1 POINT SHOULD DE 127 INCHES.
THC REACTOR Low-LEVEL SWITCH 1 HIPPED AT 76 INCHES. AND ITS SEIPOINI SHOUED BE 79 INCHES.
FROM PAST E XPER I E NCC. IT APPEARS THE PROSEE M IS DUE TO THE C ALIBR A T ION EQUIPMENT USE D.
WEEKLY Q
TESTS WILL DE PE hF OH MEO. AND CHANGES IN T Hti CALIDHAVION SYSTEM wlLL BE M AD E.
Q KE YWORDS HEAC10H. HwH8HEACTOH PHOIE CT ION SYS f EM 3 I NS T RUMEN T C ALISH AT ION EF AILURE e INSTHUMENT8 INSTRUMENT. LIQUID
_MMMM@M_ O___0_C_wR_D0_F__A 8_1tLHE
l V
HUGuiLITWhiiGL TECMICAC"I;;ruGUIWSEAvice. 6. S. DEPAmTMeNT Or COMMEeCe. SPRINGrielo. VA.
cvaIt h
e o
O O
\\
27/6/0000003-0000206//
Ise CONitMU4fEON !
PAGE 75 Q
22861 Q
f CA1EGORY 8700003090000 EDITION 0044 CURP CODE AIG p
COUNTRY A
/)
ABS TR ACT DUR ING A SURVE ILL ANCE T EST. THE REACTOR LOW-LEVEL SW I TCH ACTUATED AT 824 INCHES. WHILE THE SE1POINI SHOULD DE 127 INCHts.
TE RtACTOR LOW-LEVEL SWIICH TRIPPED AT 76 INCHES. Ape IT S SE T PG IN T SHOULD DE 79
$NCHES.
FROM PAST EXPERIENCE. IT APPEARS THE PROGLEM IS DUE TO THE CALIBRATION EQUIPMENT USED.
WEEKLY p
TESTS WILL DE PE kF OR MED. AND CHANGES IN THE CAllBRATION SYSTEM WILL DE M AD E.
Q KE YWORDS REACTOR. OWR 8 REACTOR PROTECTION SYS TEM 8 I NS T RUME N T C ALIBR AT ION $F A ILURE. I NS if4UMENT 3 INS TRUM EN T. LIOUID I
LEVEL 8 MILLSTONE I ( OWR)iF A 8 LURE p
27/6/0000005-0000206//
389 g
ACCESSION NO.
00ZOOF3337 18ILE SWITCH SETPOINT DEVIATION AT PILGRIM CORPAUlH SOSTON EDISON COMPANY p
D A T T' 39 T2
.)
TYPE O
ME MO DOCKET-50293-85 +. 2 PAGES. LETTER - DOSTON EDISON COMPANY TO DIRECTORATE OF REGULATORY OPERATIONS.
RE G I ON I DIVISION OF CO86*LIANCE ( AE.C ) - AUGUST J.
1972. DOCK E T S0-293. T YPE-Tf wR. MFG--G.E..
.} j p
A E-SE CH T E L AVAIL AVAILAMILITY - NATIONAL 1ECHNICAL INFORMATION SERVICE.
U.
S. DEPAR TMENT [F COMMERCE. SPRINGFIELD. VA.
22865 l
CATCGORY 1700003090000 p
EDITION 0044 g
CORP CODE AKA COUNTRY A
ABSTR ACT DURING ROUTINE FUNCTIONAL TEST. SE TPUI N T DOI AI NED FOR HIGH-W AT ER-LEVEL ISOLATION SWITCH WAS SO INCHES p
Ata) SHOULD HE 48.
LOW-W A T E R-LE VE L SCR AM SWIICH SE IPO INI WAS 7 INCHES AtX) SHOULD BE 9.
THE
.}
i HIGH-WATER-LEVEL TRIP SWITCH WAS DEFECTIVli. AS EvlDENCED BY A 20-INCH RESET Rate > VERSUS AN AVERAGE 6 INCH RESET tlAND.
SWITCH WAS RLPLACED.
NO DEFECT FOUND ON LOW-LEVEL SWITCH.
KEYWORDS I4 E AC T ON. BWRICONTAINMENT ISOLATIONiNEACIOR PROTECTION SYSTEMIFAILURE. INSTRUMENiilNSTRUMENT. SWITCH 3 p
PILGRIM 1 (OWR )iOPEN AT ING EXPERIENCE 8F AILURE
.] f I
27/6/0000001-0000206//
190
]j ACCESSION NO.
0020072850 p
TITLE SEIPOINI DRIFT ON SCRAM PRESSURE SWITCH AT DRESOEN 3 COR P AUTH COMMONWEALTH EDISON COMPANY DATE 8972 l
TYPE O
p MEMO OOCKET *>0249-8 48 +. I PAGE. TWX - COMMONWE ALT H EDISON COMPANY TO DIRECTOR ATE OF LICENSING (AEC) - JdLY
]4 6
- 25. 3972. DO(XE T S0-249. TYPE-OWR. Mf G-G.E.. AE-S G T + LUNDY AVAll AVAILAHILIFY - NATIONAL TECHNICAL I NFORM AT I ON SERVICE. U. S. DEPARTMENT (F COM ME R CE. SPRINGFIELD. VA.
22168 p
CATEGORY 1700008090000
}
}
EDITION 0043 CORP CODE DRS COUNTRY A
1
(%
ABS TR ACT DURING ROUTIt4E CALIONATION. A HIGH-PRESSURE-SCRAM SWI1CH WAS FOUND SET AT 1075 PSIG. COMPARED WITH THE
')
LIMIT OF 80b0.
THE SWITCH. A MELL1RON. WAS RECALIBRATED.
REVIEW IND IC A TE D THAT T HE SE SWITCHES HAVE A TENDENCY TO DRIFT UPWARD IN THE SUMMER ANO DOWNWARD IN IHE WINTER.
SWI TCHES WILL DE CALIBRATED MONTHLY l
DURING THE SUM ME R.
O KEYWORDS REACTOR. OWRiREACTOR PROTECTION SYS TEM E DRE SOEN 3 (BWR)i!NSTRUMENT CALIBRATION 8 FAILURE. INSTRUMENT 8 INSTRUMENT. SWITCH 8 FAILURE. DESIGN ERROR 35ET POINTIF AILURE 27/6/0000001-0000206//
E91 Q
ACCESSION NO.
00EOO 72 77 8 Q
I TEILE SLIPOINT DRIFT ON PRESSURE SCRAM SWI TCHES AT DRESDEN 2 AND 3 O
9 O
O 4
k 27/6/0000001-0000206//
195 CONTINUATION I PAGE 76 Q
CODPAUTH COMMONWE ALTH EDISON COMPANY g
DATE 1972 TYPE O
MEMO DOCKET =a0237-243 +. 2 PAGES. LETTER - COMMONWEAL 1H EDSSON COMPANY TO DIVISION OF REACTOR LICENSING Q
(AEC) - JULY 27. 4972. DOCKETS S0-237/249. TYPE--HWR. MFG--G.E..
AE-SG T + LUNDY g
AVAll AVAILABILITY - NATIONAL TECHNICAL INFUR MAT ION SENVICE. U.
S. DEPAR TMEN T [F COM 8E RCE. SPRINGFIELD. VA.
22168 CATEGORY 1700008040000 Q{
)
Q EDITION 0043 COMP CODE DRS
. -- b mw Jut
Q ACLtSblure NLJe UW4WWidf#1 TITLE SETPOINT D? TIFT DN PNESSURE SCOAM SWIT0tCES AT DRESDEN 2 AND 3 e
O O
O O
O 27/6/0000001-OG 00206e /
198 COP 4TINUATION 1 PAGE 76 Qg COkPAUTH COMMONWEALTH CDISON COMPANY Q
DATE 8972 TYPF Q
MEMO DOCKET-SO237-248 +. 2 PA GE S. LETTER - COceMONWEALTH EDISON COMPANY TO DIVISION OF REACTOR LICENSING
(* s (AEC) - JULY 27. 3972. DOCKLES 50-237/249. TYPE--OWHe MF G--G.E. e AE-SGT + LUNDY Q
AVAIL AV A ILAB ILI TY - N AT IONAL TECHNIC AL INPUR M A T ION SEHVICEe U.
S. DE P AR T ME N T & COM E RCE. SPRINGFIELD. VA.
22168 CATEGORY 1700008090000
('
ED I TI ON 004J q6 COMP CODE DH S COUNTRY A
ABSTRACT DURING ROUTINE CALIONATION CHECKS OF THE ELECTROHYDRAULIC CONTROL OIL LOW-PRESSURE SCRAM SWITCHES. IT Q
W AS FOUND THAT THE SETPOINT HAD DRIF1ED ON 6 OF THE o SWITCHES.
1WO WERE ON UNIT 2.
AND FOUR WERE ON q
UNIT J.
?HE THip SETTINGS RANGED FROM 860 TO 885 PSIG. COMPARED WI TH LIM IT OF 900 PSIG DECREASING.
j SWITCHES WERE OARKSDALE feODEL TC-9622-3 SWITCHLS.
THE SETPOINT DRIFT WAS UNEXPLAINABLE.
ONE Switch DID SHOW INTERNAL LEAKAGE.
ONE SWITCH WAS REPLACED WITH NEW MODEL TO TES T APPLIC A8 5Ll1Y.
Q KEYWOkDS HEACTOR. BWH8HEACTOR PROTECTION SYS TEM 8 DRE SDEN 3 (O WR l l lNS T RUME N T CALIBRATION 8 FAILURE. INS T RUesEN T 8 g*
DRESDEN 2 (DWHll!NSTRUMENT, S4 #CHilNSTRUMENie PRESSURE 8 SET POINT 3DRIFTIFAILURE 27/6/0000005-0000206//
192 Q
ACCESSION NO.
0020072572 q
TITLE PHOTECTION SYSTE M SW I TCH F A IIM *# ' PILGHIM CORPAUTH OOSTON EDj$0N COMPANY DATE 1972 MEMO DOCKET-SO293-79 +. 2 P AGES g P
- 40S10N EDISON COMPANY TO DIVISION OF REACTOR LICENSING (AEC) -
Q Q
TYPE O
JULY I2e 1972. DUCKET 50-29*4 o v e v t.
MF G-G. E.. AE-BE CH T E L AVAll AVAILAulLITY - NATIONAL TEDmIC AL l.#pMM AT ION SEHVICE, U.
S. DEPARTMENT W COMMERCE. SPRINGFIELD, VA.
22363
(}
[p CAT Y
17000050900003120000 muns UN 0043 Q
CDRP CODE AXA 1
Q COUNTRY A
Q A BS T R AC T DOMING STARTUP PREOPERATIONS. A WATER-LEVEL-LIMIT SWITCH DID NOT RESET AFT ER TRIPPING.
CAUSE WAS RUST IN THE SPIRAL WELL.
INSTRUMENT REPLACED.
KEYWORDS HEACIOR, OWNEREACION PROTECTION SYSTEM;CORROSIONIFAILURE. INS T RUMCN T I I N S TR UMEN T. SWITCH 8 PILGRIM I (BWR33
}
? Q FABLUNE 1
27/6/0000003-0000206//
193 ACCESSION P80.
002007256S
)
Q TliLE INOPEHABLE PRON CT ION SYSTEM SWI TCH AT DRESDEN 3 i
COMPAUTH COMMONWE ALIH Evt SON COMPANY l
DATE 1972 TYPC Q
Q tet MO DOCKET-50249-842 +. I PAGE. LETTE R - COMMONWE ALTH EDISON COMPANY TO DIRECTOR ATE OF LICENSING (AECI -
Q JULY 87. 1972 DOCKET S0-249. 1 YPE-DWR, MF G--G.E.. AE " SGT
S. DEPARTMENT & COM ME RC E, SPRINGFIELD. VA.
22863 Q
CATEGORY 3700003090000 Q
EDITION 0043 CORP CODE DNS COUNTHY A
Q AUST R ACT DURING A TURDINE-CONTROL-V ALVE E MER CISE. A SCRAM ON ONE CHANNEL W AS NOT AC T IV ATED.
INVESTIGATION Q
SHOWED THAT SWliCH W AS MOUNTED WEIH IWO BOLTS GOING UPWARD THHOUGH TOP OF SWITCH AND THEN THNOUGH BRACKET, WITH NUTS ON TOP.
UNE BOLT W AS M E SSilWGo AND THE PLUNGER THAT ACT IV AT ES THE SWITCH ROTATED IT ON T HtE REMAINING UOLT INSTEAD OF ACTlvAiING II.
MOUNilNG HOLT S WERE REVER SED SO T HA T BULT GOES THROUGH Q
BHACKET FROM THE TOP. WITH NUTS INSTALLED ON OOTTOM.
g KEYWORDS HEACTUR, HWRiREACTON PROTECTION SYSTEMEDRESDEN J (OWRI; FAILURE. INSTRUMENT 8 INSTRUMENT, SW I TCH 3F AILURE.
O O
O Q
27/6/0000001-0000206//
193 CONTINUATION l PAGE 77 Q
INSTALLATION ERROH8 FAILURE g
27/6/0000003-0000206//
194 ACCESSION NO.
0020071832 Q
TITLE FAILURE W TURRINE STOP VALVE LIMIT SWITOf AT DRESDEN 2 g
CORPAUTH COMMONWE ALTH EDI SUN COMPANY DATE 1972 TYPE O
- Q MEMO DOCKET-50237-237 +. I PAGE. TWK - COMMONWE ALTH EDISON COes* tNY TO DIRECTOHATE OF LI CE NS ING (AEC) - MAY Q
30, 1972, DUCK E I 50-237. T YPE --tB WR e MF G--G.E.. AE -SGT + LUNOY
/VTV1A
_/WrWhARrL.sa#YWUYi'.hCKClO3D.fkr;Lpp[g2gm mn m cipfyr10rTTr F7. (FT1CM tn CC] fir ~ OfY.Ytr% n3n
PROkC[ ION SYSTbl5ESbEN i (Eh28tFAILUREe INST *.UMENT 8 8N3T%UMENT, SU I TCMlF AILUNie KEYWORDS k A $0Re SR $[rbC G4
~
6
()
)
(?
')
2 T/6/000000 3 -0000206//
193 CONTINUATION I PAGE 77
()
INSTALLATION E RRDH 8F A ILURE
/)
27/6/0000005-0000206//
194 ACCESSIDN NO.
00 ZOO 78832
()
TITLE FAILURE OF TURBINE STOP VALVE LIMIT SWITCH AT DRESOEN 2
/)
CDWPAUTH COMMONWEALTH EDISON COMPANY DATE 1972 TYPE o
()
MEMO DOCKET-5023F-237 4.
8 PAGE. TWK - CD4MONWE ALTH ED E SDN COMPANY TO DIRECTORATE OF LICENSING (AEC) - MAY
()
- 30. 1972. DOCK E T S0-237. I YPF --U WO. MF G--G.E., AE-SGT + LUNDY AVAIL AVAILABILITY - NATIONAL TE CHKI CAL INF OR M A T I ON SERVICE. U.
S. DEPARTMENT OF C OM ME RCE. SPRINGFIELD. VA.
I 22868 l
()
CATEGDRY 1F00003090000
() '
I EDITION 0043 l
CORP CODE DRS COUNTRY A
g}
AHSTRACT DURING S T AR TUP IESTING. A REACTOR-PROTECTION LIMIT SWITCH DN NO. 2 IUR S I NE STOP VALVE FAILED.
()
INSPECTION REVEALED SWI TCH WAS HANGING UP INTERNALLY.
SWITCH WAS REPLACED.
KEYWORDS REACTOR. HWR8 FAILURE 8REAC10R PROTECTION SYSTEM 8FAILUME. INSTRUMENilDRESDEN 2 (BWR): INSTRUMENT. SWITCH 8 fuRHINE l
27/6/0000005-0000206//
195 l
ACCESSION NO.
0020078750 I
t!!LE HPCI TURUINE FAILED TO RESET AT DHE SDE N 3
]g l g)
COHPAUTH COMMONWE ALTH EDISON COMP ANY DATE 19F2 TYPE O
MEMO DOCKE T -602 49 -136 +. 2 PAGES. LET TER - CDMMONWEALTH ED ESDN COMPANY TO DIVISION OF REACTOR LICENSING
()
(AEC) - MAY 25. 1972. DOCKET S0-249. T Y PE--UW A. MFG--G.E..
AE--SGT + LUNDY gg1 AVAll AVAILADELETY - NAllONAL T E CHNIC AL INFUN M A T ION SERVICE. V. S. OEPAR TMENT OF COMMERCE. SPR I N GF I E LD. VA.
22168 CATEGORY 1700008320000
()
EDITIDN 0043 gg l CORP CODE DR S l
COUNTRY A
AGSTRACT DURING A TEST. T HE HPC I TURDINE FAILED TO RESET FROM THE CONT ROL RDOM.
IT WAS RESET LOCALLY. AND THE TEST W AS COMPLE I E D S AT ISF ACT OR ILY.
A WIRE HAD OROKEN OF F THE TURBINE RESE T SOLENOID.
IT WAS gg gp RECONNEC1EO.
NEW SOLE NO IDS WERE OR DER E D.
C AU SE APPEARS TO DE BR I TILE FRACTURE OF A TERMINAL DN THE SULENGIO.
KE Y WOHDS HEACTOR. OWRICOHE SPRAY; REACTOR PHO TECi l DN SYSTEM 8DRESDEN 3 ( B WR i t EMBR I T TLEME N T 8 F A ILUR E.
INSTRUMENT 8 INSTHUMENT. SWITCH 8 TEST. SYSTEM OPERADILITY& ENGINEERED SAFETY FE AT URE iC ABLE S AND CONNECTORS 8 FAILURE gg
{}
27/6/0000003-0000206//
196 ACCESSION NO.
00 ZOO 6T922 T
TITLE FAILUF4E OF HPCI 10 O PER A T E DURING TEST AT DRESDLN 2 (v
CORPAUTH COMMONWEALTH EDISON COMPANY DATE 89F8 FYPE O
p>
MEMO I PAGL. TWK - COMMONWEALTH EDISON COMPANY TO DlWISION OF COMPLIANCE (AEC) - NOVEMBER 59. 1978. DOCKET 50-23F. TYPE--DWR.
MFG--G.E..
AE--SGT + LUNDY AVAIL AVAILABILliY - NRC PUBLIC DDCUMENT ROOM. 3717 H SIREET. WASHINGTON. D.
C.
20545. (08 CENTS /PAGE --
MINIMJM CHARGE s2.003
(}
CATEGORY 1F00008120000
()
EDITION 0040 COHP CODE DRS COUNTRY A
()
AOSTRACT AT ORESDEN 2 THE HPCI FAILED TO START DURING A TEST.
FAILUHE RESULTED FROM LOOSE LIMI T SWITCH ON THE
,}
CONIROL VALVE.
THE SWITCH ADJUSTING SCREW WAS T I GHT E NED AND A DOUBLE LOCX NUT WAS ADDED TO PREVENT
()
I l
I GDi
()
27/6/0000001-0000206//
196 CON T INUA T I ON I
PAGE 78 FUTURE LOOSENING.
gg
{}
KEYWORDS R E AC T OR, OWRICORE bp H A Y 8 F A I LUR E. EQURPMENT8HEACIOR PROTECTION SfSTEM8 FAILURE. INSTRUMENT %DRESDEN 2 (BWR)
& INSTRUMENT. SW I I CH81E ST. SYSTEM OPER AH ILI T Y ;F AILURE. DESI GN ERNDH5 CORE NEFLOODING SYSTE 4 3 EMERGENCY COOLING SYSTEM;FAILURL 27/6/0000005-0000206//
197 ACCESSION NU.
00 ZOO 67627 TITLE ISOLATION OF PRIMARY SYSTEM DN REACfDR VESSEL HI GH W AT ER LEVEL AT DRESDEN 2 AND 3
_ ()
COHPAUTH COMMOHWEALTH EDISON CO MP AN Y
()
DATE 1978 M4 O
g.-
p s a.u
.. m.m...
.n.
r.. u_.,
...AND A DOUBLE _. LOCK NUT UAS ADDED TO PHEVENO CONTROL WELVE.
TME S3 ITCH ADJUSTING SCREG UAS T I GH T E NED e
()
)
('
)
27/6/0000001-0000206//
896 CONTSNUATION 1 PAGE 78 (5
FUTURC LDOSENING.
/}
t I
KEYWORDS REACTUR. HuR& CURE SPH AVIF AILURE. E OulPMEN T IRE AC T OR PROTECTION SYSTEM 8 FAILURE. INSTRUMENTIDRESDEN 2 (BwR) i 5BNSTHUMENT. SwlTCHITEST. SYSTEM OPER AS IL I T Y ;F AI LURE. DE SI GN ERRUNICORE NEFLDODING SYST EM I EME RGE NC Y COOLING SYSTEM 8 FAILURE 2 F/6/000000 5 -0000206//
197 ACCES$lDN NO.
00Z0067627 IlfLE ISOLATION OF PR I M AR Y SYSTEM DN HE ACTOR VESSEL HIGH WATER LEVEL AT DRESDEN 2 AND 3 C'
COkPAUTH COMMONWEALTH EDISON CO MP AN Y r')
DATE 1971 t
TYPE o
MEMO DOCK E T -SO2 37-2 0 7 4 Il P A GE S. LETTER - CDMMONwEALTH EDISUN COMPANY TO DIVISIDH OF REACTDR LICENSING i
()
19F8. DOCKET 50-23F. TYPE--ewR.
MFG--G.E.,
A E --S GI + L UND Y
- }
AVAIL AVAILABILITY - NAllONAL T E CHN I C AL I NFOH MA T I ON SEHVECE. U.
S. DEPARTMENT OF COM MERCE. SPRINGFIELD. VA.
22808 CATEGORY 3700003090000
(}
EDlilON 0039
()
CONP CODE DRS CDUNIHY A
AHSTRACT A HIGH WAIER LEVEL I SOLA T ION IN 1HE REFUELING AND ST ARTUP/ HOT STANDOY POSIllDNS OF THE RE ACTOR MODE
(}
SwlTCH HAS BEEN INST ALLED IN THE DRESDEN AND OUAD-CIllES REACTOHS AS AN UPERATIONAL DEVICE.
FAILUME OF i}
- THE PRES $URE R EGULAI DH wUULO CAUSE THE BYPASS VALVES 70 OPEN FULLY WITHOUT THIS MODIFICATION.
DEPRESSURIZING THE REACTOR.
STRESSES IMPOSED ON THE VLSSEL ARE NOT GRE AT ENOUGH TO CHANGE SI GN IF I C ANTLY THE US AGE FACTOR.
THEREFORE DilS CHANGE IS NOT A SAFETY CONSIDERATION AND DOES NOT
(}
HEoOINE AEC AUTHDHIZATION.
(}
KEYWORUS HEACTOR. swH3HEACTOR PROTECTION SYS TEM IDRE SDEN 3 ( BWR ) $ INSTRUMENT. INTEHLDCKIDRESDEN 2 (BWR)5 INSTRUMENT, LIQUID LEVELIMODIF IC A T I ON 500AD CITIES I (OwH); QUAD CITIES 2 (BwR)iFAILURE
(?
27/6/0000005-0000206//
198
()
AECESSION NO.
00 ZOO 6FA38 T I TLE IMPHDPEH VALVE SETUP AT DRE SDEN 3 CORPAUTH COMMONwE ALTH EDI SON COMPANY. CHICAGO. ILLINOIS
()
DATE 8971
()
TYPE O
MEMU DOCKET-50249-66 +. 2 PAGES. LETTER - COMMONwE ALT H ED ISUN COMP AN Y TD DIVISION OF REAC10R LICENSING (AEC)
- AUGUST J.
1971. DU CKE T 50-249. IYPE--OwH. MF G-- wE S T., AL -SGI + LUNDY
(}
AVAIL AVAILABILITY - NATIONAL TE CHNIC AL INFORMATION SEHVICE.
U.
S. DEPARTMENT OF CDM ME RCE. SPR I N GF I E LD. VA.
,}
22361 CATEGORY 3700005090000 EDITION 0039
()
CORP CODE DMS
.}
COUNTRV A
ABSTHACT DUNING INVESTIGATION OF SCRAM DISCHARGE VOLOME DRAINING DIFF10ULIY AF TER A PL ANNE D SCRAM AT DRESDE N 3.
THF UPPER ISOLATION VALVE FOR THE SCHAN DISCHARGE WOLUME-LEVEL SuliCH WAS FOUPU IN THE CLOSED
(}
CU ND i l lON.
THE LEVEL SwliCH WDULO NUT HAVE OPEHATED Ai IHE SPECIFIED SET POINT UUT PROHADLY WOULD
{}
HAVE AT A HIG HER VALUE.
THIS V.LVE W AS CLOSED UUNING A TEST.
CHECK LISTS INDICATED IHAT T HE VALVE HAD BEEN REOPLNED UUT IT PROB AHLY w AS NO T.
THE IMPOR T ANCE UF FUI.LOwlNG CHECK LIS TS EXACTLY WAS HE E MPH ASI Z ED.
()
KEYWORDS REACTOR. DwR IF AILunE. OPERATOR ERROHiPROCEDURES AND MANUALSIREACTOH PROTECTTUN SYS TE M I DRE SDEN 3 (BwR)3
()
INSIHUMENT. CONIRUL& INSTRUMENT. LIOUID LEVELIV ALVES 3 F AILURE 27/6/0000001-0000206//
399
()
ACCESS ION NO.
002006SS45
()
TITLE SAFETY-VALVE F AILURE AF DRE SDE N-2 COMPAUTH COMMONwE ALTH EDISON CDNPANY. CHICAGO. ILLINOIS DA*E 1978
()
TYPE O
(g ME MO DOCKET-50237-193 +. 2 PA GE S. LLifER TO DIVISION OF RE ACTOR LICENSING FROM COMMONwE ALTH EDISDN COMPANY.
()
(I
()
C) 27/6/0000001-0000206//
199 CON T I NU AT I ON I
PAGE 79
()
AUGUST 84.
8973. DOCKET 50-23F. T YPE--O wR.
MFG--G.E.,
AE--SGT + LONDY (g
AVAIL AV A I LABILI T Y - N AI IUN AL IECHNICAL INFURMATION SERVICE. U.
S. UEP AR T MEN T UF COM ME HCE. SPRINGFIELD. VA.
22568 CATEGDRV 8F00003090000
()
EDITION 0038 gg COHP CUDE DRS COUNTRY A
AB S TH ACT DUHING ROUTINE TESTING OF THE HIGH PHE S SUR E COOLANI INJECTION SYSTEM. T HE TURBINE STDP VALVE F AI LED 10
- ()
OPEN. MANING T HE SYb lE M INUPEHAULE.
THE CONTHDL VALYL LIMlf Su l iC H WAS MISALIGNED AND DID NOT LLO SE
()
WHEN THE VALVE WAb CLOSED. YtENEFORE. T HE CINCUlf COULD NO T DE E NE RG I ZE D TO OPEN THE VALVE.
THE LIMIT mfMX@ EM RXXLD&%o AfD GBHER T whDLMODI FIED 10.INDICATL THE Sul fCH POSITfDN T O T HE O PE R A T ON.
g d TPa.
u CD'4MONwE ALTH EDI SON COMPANT.
8*E MO DOCXET-50237-193 +. 2 PAGES. LEITE31 TO DIVISION OF RF. ACTOR LICENSING FROM 6
O O
Ol 27/6/0000005-0000206//
199 CONTINUATION 8 PAGE 79 I
AUGUST 84. 19FA. DOCKEI S0-23F. T YP E-O WR, MF G-G.E., AE-SGT + LUNDY q
Q g AVAIL AV AI LA'BI LI T Y - N AI SON AL TE CHN IC AL I NFOR M A T I ON SERVICE. U.
22563 CATEGORY IT00008090000 Q
EDIflON 0036 g
CORP CODE ORS COUNIRY A
AD S T R ACT OURING ROUTINE TESTING OF THE HIGH PRE SSUR E COOLANI INJECTION SYSTEM. THE TURBINE STOP VALVE F A I LE D TO Q
OPEN. MAKING THE SYbiEM INOPERABLE.
THE CONTROL VALVE LIMIT SWITCH WAS MISALIGNED AND DID NOT CLD SE Q
WHEN THL VALVE WAS CLOSED. THERE' ORE. THE CIRCulf COULO NOT DE ENERGIZED TO OPEN THE VALVE.
THE LIMIT f
SuliCH WAS REALIGNED, AND CIRCUlf WILL BE MOUSFIED TO INDICATE THE Sw!TCH POSITION TO THE OPERATOR.
KE Y wORDS REACTOR. HwR& REACTOR PROTECTIUN SYSTEMEDRESDEN 2 (DwRl8 INSTRUMENT. Sw!TCHiFAILORE. INSTALLATION ERRORt Q
S AF L T Y DEVICE 8 EMERGENCY COOLING SYSTEMiVALVEsiFAILURE Q
27/6/0000005-0000206//
200 ACCESSION NO.
00R0061324 Q
TITLE SELECTED ITEMS OF INTEREST
]
CONPAUTH COMMON WE AL T H E D I SON COMPANY DATE 19 78 TYPE G
Q MEMO DOCKET 50080-78 e.
25 P AGE S. DRESDEN NUCLEAR POwLR STATION ANNUAL REPORT 19F0. DOCKET S0-80.
}
TYPE-UwR. M FG-G.E.. A E-DE CHT E L AVAIL THC PLANT WAS SHUTDOWN ll TIMES DURING 1970.
SEVEN OF THE SHUTDOWNS WERE FORCED. THREE wERE CAUSED BY OPER A T ING ERRORS. TWO DY LOSS OF CONDtNSE Q
CATEGORY 370000 g
EDITION 00J5 CORP C[D E DRS
. COUNTRY A
Q
'ADbfRACT THE PLANT WAS SHUTDOWN ll T IME S DUR ING 1970.
SEVEN OF THE SHUTDOWNS WERE FORCED. THREE WERE CAUSED Q
BY OPERATING ERRORS. TWO SY LOSS OF CDNDENSER VACUUM AND TWO BY PRIMARY SYSTEM STEAM LEAKS.
THERE WERE FOUR SCHE DULED OU T AGE S.
UNE FUR F EE DW A TER HEATER TUHE LEAK REPAIR. DNE FOR TUROINE OVERSPEED TESTS.
UNE FOR SCRAM AND F R I C T I ON-T ES T S AND 1HE LAST FOR TURBINE CROSSUNDER PIPING REPAIR.
THE Q
TOIAL UNIT OUTAGE TIME. AS A RLSULT OF THE ELEVEN SHUTDOWNS. WAS 643 HOURS 25 MINUTES.
g KE YuORD S REACTOR. D wR &DRE SDEN 3 (BwRl8 FAILURE. OPERATOR LRROR3 REPORT. OPERATIONSIFAILURE. PIPEiSCRAM. REALI FAILURE. I NS T R UM EN i t I NS T RUM EN T. SW I TCHILE AK 30PER Ai!NG ERPERIENCE8 HEAT EMCHANGERSiCONTROL ROO DRIVES 8 FAELURE 27/6/0000005-0000206//
201 ACCESSION NO.
0020055398 TITLE REFutiL INTERLOCK F AI LURE AT DRESDEN 2 g
CORPAUTH COMMONWEALTH E DI SON COMPANY. CHECAGO. ILLINOIS
}j l
DATE 1972 l
TYPE O
MEMO DOCKET-60237-228 +. I PA6E. LETTER - COMMONWEALTH EDISON COMPANY TO DIVISION OF REACTOR LICENSING (AEC)
=
O
- "^ac" 6-
"- ooc"
5'-'3'-
" "E-"
- R. MF G-G.E., AL-SGT + LUPOV gi AVAIL AVAILADILITY - NATIUNAL TECHNICAL INFOR MA T ION SERVICE U.
S. DE PAR THE N T & COM ME RC E. SPRINGFIELD. VA.
l i
22368
)
CATEGORY IF00008090000 Q
EDITION 0048 g
CORP CODE DRS COUNTRY A
AHSTRACT WHEN THE REFUELING PLATFORM WAS MOVED OVER 1HE CORE AND THE GRAPPLE EXTENDED.
tee REFUEL ING PLATFORM TRAVEL-LIMIT SWITCH FAILED TO ACilV ATE.
F AILURL OF THE SWITCH WOULD PERMIT REMOVAL OF A ROD.
THE g
O.
SuliCH WAS MISALIGNED.
REPAIRS WERE MADE BEF ORE REFUELING WAS CONTINUED.
KEYWORDS REACTOR. owr 3R EACTOR PROTECTION SYSTEM 8 FAILURE. INSTRUMENTIDRESDF,N 2 (HwR38 INSTRUMENT. SwlTCHIREFULLINGi F A I LURhi. M A IN T EN ANCE E RROR IF A ILURE 0,1 O
}
e O
0 0
PAGE 80 27/6/0000001-0000206//
202 Q
ACCESSION NO.
00Z0047823 g
TITLE UNPLANNED REACTOR SCHAM AT LACROSSE CORPAUTH DAIRYLAND PO WE R COOPERATIVE DATE 1970 MEMO DOCKET 115-5. 14 PAGES. LLTTER - DAIRYLAND POWER COOPERATIVE TO DIVISION OF REACTOR LICENSING (AEC) -
g' Q
TYPE O
JULY 25. 19 FO. T YPti--owr. MF G-A.C.. A E-SG T
- LUNDY AVAIL AVAILABILITY - NRC PUOLIC DOCUMENT ROOM. 175F H STREET. WASHINGTON.
D.
C.
20545. (08 CENTS /PAGE -
Q MINIMUM CHARGE s2 003 g
CATEGORY I700008090000 J YTU U M _
_ R^1ry 1__
{
t1 cn (s
/)
27/6/0000001-0000206//
202 PAGE 80
('
ACCESSIDN NO.
00 ZOO 47823 r}
I TITLE UNPL ANNED Rs ACIDH SCH AM AT LACROSSE f
CORPAUTH DAIHYLAND PD wE R COOPERATIVE ii DATE E970 3
I i TYPE O
MEMO DO CK E T 115-5, 14 PAGES. LLTTER - D A IRYL AND POWER CDOPERATIVE TO DIVISION OF REAC10R LICENSING (AEC) -
JULY 21, 1970. T V8't--HwR e MF G-- A.C e e A E-SG T
- LUNDY AVAll AVAILAHILITY - NHC PUtlLIC DDCUMENT HDOM. 17 t F H STREET. W ASHINGTON. D.
C.
20545. (08 CENTS /PAGE --
T MINIMUM CHA R GE S2.00) 1 g*
CATEGORY 1T00003090000 EDITION 003J COHP CODE AYS
(}
CDONTRY A
r}
AHSIR ACT REPOHis 6 UNPLANNED SCH A MS AT LACHOSSE.
CAUSE S WERE SPURI DUS SI GN ALS W TEN RANGE OF POWER LEVEL INSTRUMENT WAS CHANGED. OIL LEAK IN A CONTRDL ROD DRIVE. LOW COOLANT FLOW SIGNAL RESULIING FROM AIR IN THE INSTRUMENT SENSING LINES, IMPHOPER ADJUSTMENT OF A F EED WATEN PUMP, AND ACCIDENTALLY TURNING OFF OF
()
THE CONT ROL PO WE H wHILE DUSTING THE CO NSULE.
)
KEYwoHOS HEACTOH, swr;F AILUHE, EQUIPMENT &SCHAM. REALIFAILURE, INSTHUMENT i lNC I DEN T. EOUIPMENiilNSTRUMENie COMPUNE N i i l N ST RUMEN T. FLDWilNSTRUMENS, SwliCHilNCIDENT. HUMAN ENHORISCRAM. SPURIOUSILACROSSE 80 writ INSTRUMENT, ABNORMAL I ND I C A T IONi l NS T RUMENT. POWER HANGEiLE AKiOPER AT ING E XP ER IE NCE I CON T ROL ROD DR i vE Si (5
FAILURE
()
27/6/0000005-0000206//
203 ACCESSION NO.
00Z0044753 (N
T I T LE F A ILURE DF THREE OF FOUR S AF ET Y SYSTEM SENSURS FOR PR IMARY DRUM LOW LEVEL SCRAM
()
CORPAUTH COMMUNwELATH EDESON COMPANY DATE 1970 TYPE O
{T MEMO 2 PAGCS, LETTEH - COMMONWEALTH EDE SUN COMPANY 10 DIVISIDN OF REACIOR LICENSING (AEC) - APRIL 27. 19T0.
f)
DOCKET S0-10. IYPE--HWH.
MFG--G.E.,
AE--DE CH T E L AVAIL AVAnLAUBLITY - NRC PUBLIC DOCUMENT RUOM. 1787 H ST REE T. WASHINGTON. D.
C.
20545. (08 CENTS /PAGE --
$2 00)
()
CATEGORY 1700003090000
()
EDIllDN 0038 CORP CUDE DRS CDUNTHY A
()
ABSIHACT DURING A ROUTINE TESie SENSURS LSL-le
-2.
AND -3 FAILED.
THEY ARE FLO A T -T YPE M AGNE TH DL DEV I CES.
r}
AFTER FLUSH ING THE SENSUR FLHAT CH AMBE R S. SWITCHES OPE R A T E D PROPE RLY.
BE L IEVE THAT BUILD-UP OF CRUD FROM A SM ALL F LOW DF NEACTOR WATER WAS THE CAUSE.
WATER TUHulDITY INCREASES AFTER A F ULL-PO WER SCHAM.
DURING 1970
()
REFUELLING. DIFFEREMIIAL TYPE SwliCHES WILL DE INSTALLED.
4}
KE YmDHDS REACTUHe OwHIDRESOEN l (UwR)&REACfDH PROTECTION SYST EMIF AILUHE, I N ST RUM ENT ICRUD i lN ST RU MEN T. LIDUID LE VE L i l NST RUME NT, Sw l i CH IR E F UELI NG I F A I LORE, DESIGN ERRDR $OPER AT ING ExPERIENCEiF AILURE MODE ANALYSISI FAILUNE 27/6/0000005-0000206//
204 ACCESSION NO.
0020039182 TITLE REACTOR PROTECTION SWITCH AT MILLSTONE POINT FAILED TO TRIP
()
CORPAUTH THE MILLSTONE POINT COMPANY
,}
DATE 19 72 TYPE O
MEMD DOCKET-SO245-Il3 +.
I PAGE, LETTER - THE MILLSIDNE POINT COMPANY 10 DIVISIDN OF REACTOR LICENSING (AEC)
()
- F E BRU AH Y 28, 19F2. DOCKET b0-245 T Y PE --HwR,
MFG--G.E.,
AE--EDASCO
{g AVAll AV A I LABILI T Y - N AT IONAL IE CHNIC AL I NFOR M AT I ON SERVICE. U. S. DEPARIMENT OF COMMERCE. SPRINGFIELD. VA.
22568 CATEGONY 1700004090000
()
EDITION 004I gg CONP CODE AIG I)
(I
()
()
27/6/0000005-0000206//
204 CONTINUATION I P AGE 8I
()
COUNTRY A
()
AHSTHACT DURING A TEST DN T HE MAIN-STEAM ISOLATION VALVE HEACTOH-1 HIP CIRCUIT. AN INBOARD SwlTCH FAILED TO ACTUATE.
SINCE lf WAS INSIDE THE CONIAthMENT, l i W AS PL ACED IN THE T H I PPE D COND I T I ON UNTIL THE HEACTOM WAS SHUI OUWN LATER.
THE SwliCH W AS SUPPOSED 10 TRIP WHEN ITS VALVE WAS 90X OPEN.
THE TEST MOVED
{}
VALVE TO 90% AND THEN BACK 10 800X DEF0HE THE VALVE THAVEL REACHED THC Switch.
ALL SUCH SwlTCHES WERE gg MOVED TO TRIP AT 92E OPLN.
KEYWORDS RE ACT DR e BWHIREACIOR PROIECTIDtd SYSTEM;F AILURE. INSTHUMENiilNSTRUMENT. SWITCHITEST, SYSTEM OPERADILITY; FAILUHC, INSTALLAllON LHHORIMILLSIONE & (UwH)8 FAILURE 27/6/0000001-0000206//
20S ACM45[EN CQD.
OOH 0037902
g p aesw.
CORP CODE AIG e
()
)
(?
')
I 2 F/6/000000 5 -0000206//
204 CONTINUATION I P AGE 88
(}
COUNTRY A
r}
I ABSTHACT DURING A TEST DN THE MAIN-% TEAM R S DL AT I DM VALVE HE AC T OR-T H IP CIRCUIT. AN INBOARD SWITCH F AILED TO ACIUATE.
SI NC E II WAS INSIDE T HE CONT A INMENT. IT WAS PL ACED IN THE T R I PPE D COND I T ION UNTIL THE REACTOR j
wAS SHUI DOwN LATER.
THt SuliCH WAS SUPPOSED TO TRIP WHEN ITS VALVE WAS 90E DPEN.
THE TEST MOVED
(}
VALVE TO 90E A ND T HE N BACK 10 200E DEF ORE THE VALVE TRAVEL RE ACHED THC SWITCH.
ALL SUCH SWITCHES WERE r)
MOvtO TO TRIP AT 925 OPEN.
KEYWORDS RE AC T OR. BwHiREACIOR PR O I E C I I ON SYSTEM 8F AILURE. INSTRUMENI$ INSTRUMENT. SWITCHITEST. SYSTEM OPERABILITYi FAILUHE. INSTALLAllON f _RH OR ; M I LLS I ONE I (D wR 9 5 F AILURE 2 F/6 /00 0000 3 -0 0 00 20 6//
205 ACCESSION No.
OOHOO37902 TITLE SE LE C T ED OPERA T ING E XPER IENCES
()
COHPAUTH PACIFIC GAS AND ELECTRIC COMPANY
()
DATE 1966 TYPE G
MLMO 20 PAGES. REPORT UN OPERATION OF HUMOOLDT OAY. AUGUST B6 1965-F E hR U AR Y 15. 1966. APRIL 1.
1966 DOCKET
(}
S0-333. T YPE --UW R. M F G--G. E., AE--BECHIEL
}
AVAIL AVAILABILITY - CLEARINGHOUSE F DR FEDERAL SCIENTIFIC AND TECHNICAL INFORMATION. SPRINGFIELD. VA.
2?tSt S3.OD COPY, $0.65 MICROFICHE CATEGORY 370000 p
EDITION 0026
.}
CORP CODE PGE COUNTRY A
AHSTHACT ONE FORCED DUTAGE OCCURRLD AS RESULT OF TURHINE-GENERATOR TRIP DUE 10 MISCALIBRATION OF THRUST T UR O..I NE 5,
7.
AND
,}
()
DEARING FAILUHL THIP SwlTCH.
RUPIUNED BLADDERS WERE HEPLACED F OR C ON T R OL R OD ACCUMULATORS RO.
PR I NCI P AL CHANGES MADE T O F AC IL I T Y ARE DE SCR I BE D AND THE SIGNIFICANT sESTS PERFOHMED D I SCUS SE D.
KEYuORUS REACTOR. OwN8HUMHOLDT HAY (BWR)iMAINTENANCE AND HEPAIR{HEPORT. OPE R A T I ONS8 F.3 t LURE. INSTRUMENf3 INSTRUMENT. SW I T CH 30PEH A T I NG LKPER IENCE ICONT HOL HUD DH I VES E ACCUMUL ATORS IF A ILUHE 2 F /6/000000 3 -0000 20 6//
206 ACCESSION NO.
OOROOl6026 illLE HONUS NUCLEAR POWER PLANI.
DRL MONIHLY REPOHf NO. 32
(}
CONPAUTH PUENTO HICO WATER HE SOUN CE S AUTHOHITY
}
DATE 3966 TYPE G
MEMO 20 PAGES. I F I GUk E. 5 T ABLES. NO VE MBE R 5966. D DCKET ISS-4
(}
AVAIL AV AI L AD S LI TY - US AEC PUBLI C DOCUMEN T R OOM. W ASHINGTON. D. C.
()
CATEGORY 170000 EDITIDN 0082 COHP CODE FAJ
{.
COUNTRY A
}
AUSTR ACT RADIDACTIVE GASES EN TENED THE BUILDING W HE N A WATER-SEAL TRAP OF T HE STATIC INVERIER WAS ORLACHED AS A HESULT OF A Su lICH F AILURE.
Two HDOS F AILEO 10 SCRAM D E C AU SE OF STICKING RELAYS.
BY ROUGHENING T HE CONIACTING PDRTION OF THE HELAYS. PRDPER OPERATION W AS 00T AINED.
COLD WATER WAS I NJE C TED INTO THE COHE g}
AS A RESULT OF A VIOLATION OF PROCEDURE.
THE POWER LEVEL INCRE ASED FROM 30 10 4 15 Mw.
])
KEYWORDS REACTOR. DwR &D ONUS (ISR35 ACCIDENT. COLD COOLANiiFAILUHE. COMPONENT 3 kEPORT. OPEH A T IONS 3 HE AC TOR. INTERNAL SUPERHEAliFAILUNE. I NST RUMENT 5 INSI NUMENT. SWITCH 8 INCIDENT. HUMAN ERRCR 3 R AD IDAC T I VI TY RELE ASE 8 F AILUNE.
SCRAM MECH AN i bMiHEL A YS 3F AI LURE
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