ML19224A775

LER Output on Events of TMI-2 from 1969 to Present Output Sorted by Facility & Event Date

ML19224A775
Person / Time
Site:	Crane
Issue date:	05/18/1979
From:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE), NRC OFFICE OF MANAGEMENT AND PROGRAM ANALYSIS (MPA)
To:
References
NUDOCS 7905300250
Download: ML19224A775 (20)

Text

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Ch CO i:AY 15, 1979 LlR CUIPUT ON LVLNTS AT THREE MILE ISLAND 2 PACE 1 FRCN 1969 10 INE PFLSENT OUTPUT 50RILD BY FACILITY A tlU LVLNT DATE IACILIiY/5(STU1/

C UMF C NE N T / COMPO!a E S T SUBCODE/

E,0 C K l i NO./ EVENT DATE/

CAU2f/CANSL SUCCODE/

LLR H3./

REPORI D%TE/

EVENT DISCRIPTION/

L Clil 0NL NI tiANUf ACIURik COHikOL NO. RLPORT TYPE CAUSE DLSCRIPTION Tilki t MIL E 15tAND-2 05000320 092A72 SIELL itJNER TIE PLATE WEIGHING 400 POUNDS AND USED TO F AS TEN 5 HIPPING CO RLACILR VLSSLL INi[RNALS 72 02L 102572 VER TO IOP OF PRLSSURE VLSSEL. FELL INTO VL5LLL SCRATCHING ONE INCORE IN DillE R LO"PUNLHIS 0C2378 30-DAf SikUMtNIAIION N022LL.

SULLLMPCNENI NOT APPLICABLE Pi K '.O rait t EPROR CAU5l SUBCODt NOT IROVIDLD N0 f1AhufACluktk SPECIFIED PLATE NOT PROPERLY SECURED 10 SHIPPING COVER.

IIC f l MILE 15tAND-2 05000320 061473 AFTER COMPLETING SEVEN POURS OF SERVICE BUIL DING CONCRETE 11 WAS fouND i O ilt f. A SY Sit rt5 13 0:L 071373 HAT PRL-PLACEMLHI OR POUR INSPLCIICNS HAD NOT BELN COMPLLTLD.

OlhtR COMPONINTS 001197 30-DAY SUIKOMs UNI NI NOT APPLICABLE LEiFCIIVE F POCE DU<t S CAUSE SUBCOUL NOI PROVIDED NO NANUiACTURLR SPLLIFIED INADEQUATE Q-A-QC PROGRAM.

THRit MILE ISLAND.'

05000320 0729/5 DURING INSPECTICH OF IHE CONTROL BUILDING II LIAS FOUND tHAT AT ILEV4 TION SYS if M CODE N31 APPLICABLE 75 02X 082875 331.5 l'EET A VERTICAL MECHANICAL AND ELECiRICAL CHASE WAS FGelNblD LY 70 CaiuONENI CDCE NOT APPLICABLE 013185 OINER 0 SQ FELI 0F WALL CONSISTIliG Of & INCH AND 6 INCH ll0L L OW BL OCKS. I N 8:SI C itGCOM OhEN! NUI APPLICABLE ONCKETE PLOCK WALL S WERE hai DESIGNED 10 Miti SEISMIC LLADING CONLIIICNS DLSIGN/tAPRICAIION EEROR CAUM SUBCODL NOI PROVICED Iltfl NO T APILICABLE CONSIRUCTION LRROR. CONCRETE BLOCK WAlts WERE REMOVED AND REPLACED WITH STRUCIURAL STLEL AND A Q-DECK TYPL PANLIINS.

Ibki t MIL E ISLAND-2 05000320 061876 DURING CONSTRUCIION EFFORIS INVULVING 5il!EL D LLa L L S AND SL ABS AEOUND T l!L tuit H ANDL ING 5 (51[rl5 76 02X 073076 (Utt IR All5 F E R TUEEL, VO!DS WELE DISCOVikE D IN tic CONCREIL AFOUND THE TR D iliL R C C:1P G:ii h t S 015363 OTHLR AN5f l R 1UBES LACH VOID UAS APPROXIMATELY 18 INCHES HIGH AND 6 10 6 FELT S U P C O.1P u b l N I HJI APPLICABLE WIDE.

~ LI S I Cai/ F Alj k I L A i ! O.i LkPOR CAust SUBCODE NOI PROVIDED IILM hb! APPLICAELE INADLQUAIE CUNCklIE PLACLNLNT, VOIDS WLkt RLPA! RED I

h.

1 O

ON

~

I N

TIAY 13.

1919 LER OUTPUT O tt EVENIS.. I THREE NILE ISLAND 2 PAGE 2 FROM 1969 10 illE PRLS[NT OUTPUI $0RIED BY FACILI(Y AND EVENT DATE IACILITY/ SYSTEM /

CD:lPCNf M T/COMPONf N1 SUBCODE/

00CKLT NO./ LVENT DATE/

CAUSE/CAUSE SLBCUDE/

LER NO./

REPORT DATL/

EVLHT DE5CRIPi!ON/

COMP 0fsLH! MAhufACiUR[R CONikOL NO. R L f'O R I TYPE CAUSE DESCRIPTION 1 Hl:l t f11L E ISLAND-2 05000320 080376 RESPONSE TIMES FOR A NUMBER OF SAFEIY F E A T UR f S O B T A I N E D DtJ '.a. ' ~. f. vG LMEPG CCRL COOLING SYS + CONT 76 02L 090216 EVE AL I D itl AT THEY WERE GREATER THAN THE VALUE5 LISTED IN THL.'

.HLSE IltSTRUMLMI A T IOrt

• C ol4 IRO L S 015125 30-DAY SYSTLMS INCL UDE THE REACIOK Bu?tCING ISOLATION, HIGH & LOW FPiSauk2 Iii J NJ SUBCOMPONINT PRUVIDED ECTION, REACICR BUIL DING LMLRGttiCY FANS AND OTHERS.

C OMP O N [ til FAlluRL CAUSL SUSCULL NOT PROVIDED lif M li9: APPLICABLE SYSILMS WERE IN NEED OF SOME MODIFICATIONS TO AlitR RESPONSE TIMES. THIS LFf0RI IS PkESENTLY BLING MADE.

THRLL NIL E ISLAND-2 05000520 112276 FIRL OCCURRED IN THE MOTOR CONIROL CENitR ON THE 305 ELEVATION LEVEL OF UlHIR SY5 I E MS 76 02L 021177 IHE AUXILIARY BUILDING. THE FIRE WAS EXTINGU15HLD UTILIZING CO? AND DRY CIRCUIT CLOS (RS/ INTERRUPTERS 017231 30-DAY CHLMICAL5.

NO SUBCOMPONINI PROVIDED OlHiR CAU5E SUBCGDL NOT PROVIDED lit h NOT APPLICADLE CAUSF WAS MISALIGNED STAB ASSEMSLIES CONNECIED TO BREAKER ASSOCIA1LD WII H I' UMP STARTER. THIS CAUSED EL LCTRIC A L AkC 10 DEVELOP WHICH SUBSEQUENTLY ICHITED VLRTICAL INSULATING DARRIER.

i t.0 L E f1I L E IStAND-2 05000520 0822/7 DURING IHE COURSE OF ODTAINING PUMP HEAD CURVES FOR THE IMI-2 BUILDING S 6:l AC IGR C0rtIAINMLHT SYSitMS 77 02L 092t?7 PRAY SYSILM PUMPS. IT WAS DISCOVERED THAT THE B PUMP DID NOT MILT T HE PU i U:iPS 019444 30-DAY MP E E A!1 CURVES SUPPLIED BY THE VENDOR.

hJ SU6CUMPUNiNI PROVIDED OTHf R NOT APPLICABLE BABCOCA & WILCOX COMPANY NO REASON COULD BE FOUND. PUMP ROTATING ELEMENTS HAVE BEEN RETURNED TO T HE VENLOR FOR REILSIING.

1HREE MILE ISL AND-2 05000320 092177 SEVERAL GL TYPE SBN SW!iCHES WERE F OUND TO HAVE FAILED DUR;NC IISTING.

OIHLk SYalfMS 77 00L 102177 CIRCull CLOSLRS/INILRRUPIERS 019441 30-DAT NO SUBCCMPON1HT PROVIDED

• ~ C0:1PONL N T FAIIUFE CAUSL SUBCODE NOI PROVIDED I l l M th1 I APPLICA3tL FAILURES WtRE DUE TO CRACKS & BREAKS IN CAM FOLLGUERS. GL NO T I F I E D O f' P RUBLEM.

REPLACEMLHT SWITCGES OkOERED.

7bOL300N69

[

l i

N f% ( 18, l 'J / 9 LLR DUIPUI ON EVENTS AT THREE MILE !$L AllD 2 PACE 3 FROM 19 t, 9 10 THE PRE 5ENT e

OUTPUT SORitD BY FACILITY AND EVLHT DATE F ACIL I T Y/SYSIL M/

COMf0NfHI/CLIPONLNT $b8 CODE /

DOCKET NO./ (VINT DATE/

(. A U 5 L / C A U S E LUSCODE/

LtR NO./

REPORI DATF/

[ VENT DE5CRIPTION/

COMPONtHI MANUFACTURLR CONikOL NO. REPORI TYPL CAUSE DESCRIPi10tl litFI L MIL E ISLAND-2 05000320 020878 DURING INITIAL FUEL LOADlHG. A SURVEILL ANCE (REQUIRED BY T.S.

4.9.9, AND GAS FADIGACI U$lt PI AN AGMN T SYS 78-001/03L-0 022878 4.3.3.1 TABLE 4.3.3 II[f1 2.B.1.A AND 2.B. IIA) INDICATED THAT 1HE REACTO C 0'.PO.if N T CODE NOT APPLICABL E 020998 30-DAY R BUIL DING PURGr SUPPLY F ANS AND ASSOCI ATLD PURGE WLCIRCUL Ai!DN D AliP E R S SULCUf:PUNIHi NOT AIPLICABLE Y S 11 M.

WLRt. ItiOP ER AB L E. THIS EVENI PRODUCLD NO LIFLCT ON THL HEAllli AND DLSIGM/fAPRICAIION ERROR SAtLTY Ol' IHL PUBLIC.

C0:151RUCiION/INSI AL L A TION I l t h IlO T APPLICABLE INCOMPLtiE CONSTRUCTION.

REACIGR BUILDING PURCE FANS AND DAMPfRS COULD KOT bt DEMONSIR Al[D OPER ABL L.

D3 NOT OP[ RALE T ACS WERE PL ACED ON CLIII AI ItMENT PURGE AliD E XH' US T VALVES.

AFitR COMPLFTION OF CONSIRilCIION S U R'J E I LLANCE TESTItiG LILL BE RUN.

UNTIL INLH Cutil All;ML Ni PU8tGE VALVES AND ExH AUST PfNLTRATIONS WILL R Ei! A I N CLOSLD.

IHRfL MIL E ISLAND-2 05000320 020878 PRIOR 10 INIIIAL FUEL LOALING, A VENDOR INSPECTION REVEALED A MANUFACTU U ll!R INST SYS REQD FOR SAFETY 78-002/03L-0 022878 RER'S DEFLCT IN PLATE 6 0F THE SEISMIC INSTFurliNI ATION TRIAXIAL RESPONSE IN31RUMLti( ATION

• CON TROI S 020999 30-DAY SPLCTRUM RfCORDER 714, THUS VIOLATING THE SURVEILLANCE REQUIREMENIS OF Rf cuxDt R I.S.

4.3.3.3.2 TABLE 3.3.7, IllM 4.A.

THIS EVLHI PRODUCLD NO LtfLCT ON LL31CN/ FABRICATION ERROR INE HE AL TH AND WEL F ARE OF THE PUBLIC.

fluluf AC TURING Illit NOT Al>PL IC A BL E THIS EVENT OCCURRED DUE TO A MANUFACTURER'S DEFECT.

A REPLACEMENT SLT 0 f PLAILS HAS BTEN ORDiRED AND, UPON ARRIVAL. WILL BE INSTALLLD AND THL R ECORDER VERIFIED OPERABLL.

THRLE MILE ISLAND-2 05000320 020978 DN FEBRUARY 9 AND 10, 1978 SAMPLES TAKEN FROM INDUSTRIAL WASTE FILTLR SY OTHtR AUT WATER SYS

• CONTROLS 78-001/0%X-0 031378 SIEM (IWF5) SunP INDICAILD LEVEtS Of TSS AND PH OF 476 NG/1 9.5 AND 297 C ollP ON E N T CODE NOT APPLICABLE 021287 OTHER MG/L, 9.66. RLSPECTIVELY.

IllL S E LXCEEDED HPDES PIRMI15 LIMITATIONS OF 1 SUBCCMPONENT NOT APPLICABLE 00 MG/L TSS (1UTAL SUSPLNDED SOLID;T AND A PH RANGE OF 6.0 TO 9.0.

OIHf R Ndi APPLICABLE IILM N31 APPLICABLE SUMP PUMP WAS RAISED TO INCREASE SETTLING CAPACITY IN SUMP UNTIL IT CCUL D BL PUt1 PED CLEAN.

SUMP UA5 CLEANfD 2/13/78.

A NEW INIIEIM IREATM[NI $

YSifM 10 BL INSTALLED IS LXFECILD TO PROVIDE PH ADJUSIMLHI FOR UASILMAIE R FROM IWFS SUtsP TliLL E MIL E ISLAND-2 4500032) 021378 6.'H I L E IN MODE E6 IT BECAME EVIDENT THAT A CONTINUOUS FIRE WAICH (AS REQU F IFL ITU TE C TION SYS

• CONT 78-003/01T-0 022778 IRfD BY T.S.

3.7.10.5) WAS NOT LSIABLISHED, Uhl N IHE C ABL E ROOM HAluti SY C O MP U al' N T CODE !!OT APPLICABLE 023077 2-WELK STLM'S AUI0f1ATIC ACTUAI!ON f [ ATURE WAS R[NDE REJ INOPEPABtf 10 ALLOU CONS SUCCunPONfNT t10 ) APPLICABLE 1 R UC f !ON WI L DItiG.

THIS LVtNi PRODUCED HO LFtLCT ON THE HE AL TH AND S AI LI

_ PL kSONNi l ERRGR Y OF T H E' PUBLIC.

LICLNSED 8 SENIOR OPERATORS ITEM NOT APPLICABLE nib!NitRPRE!ATION BY PORC AND SHIFT SUPERVISOR.

AS$UMED HALON SY5itM CP LR ABL E LUT AUTOMATIC ACIUATION ILATURf UAS DE-tHLRGIZED.

1HU5 FIRE U4TC H Nui EST ABLISHE D WHIL E AU10i1ATIC AC10ATION DLFEATED.

SYSTEM RL EllE R GIZE D.

PERSONNLL IN51RUCTED.

7

N Cs 8

e MAY 18, 1979 LIR DUIPUT ON FVENTS AT THREE MILE ISLAND 2 PASE 4 FROM 1969 TO THE F R L Si ti AO QUTPUT $0Rit D B r F ACILITY AND LVtNT DATE FAC!tITY/SYSIfM/

CO:1?CN E t4 T / C OMPONf H T S U B C O PJ /

DOCKET NO./ EVENT DAIL/

CAUal/CAUSE SUBC00F/

LIR NO./

REPORT DATE/

FVENI LESCRIPTION/

COMPcti[ N T M ANUT ACI UR E R CCHIROL NO. REPORT TYPE CAUSE DLSCRIPTICH THRLE Mlli ISLAND-2 05300320 021478 Af1LR INITIAL FUELING DISCOVERED 2 FUtt ASSEllBL IES WERE LCADED IN10 Tif E OTHR 11:51 575 NOI REQD FR SFTY 78-004/01T-0 0227/8 PEAC10R VESSEL WITHOUI HAVING SOURCE RANGE AUDIBLE COUNTS IN ThL CONTAIN I f 4 S I R U.1E N T A T I LH + CONTROLS 023078 2-WELK NENT BUI L DI tlG AS REQUIRED BY T.S.

3.9.2.

BOTH VISUAL AND AUDIPLE COUNIS Stte!DR/DE f f CTOR/ELIMENT OBSERVED IN CONTROL ROOM AND CONTROL R00ft Pf RSONNEL IN COMMUH! CATION WI PI M50h3( L LRRCR TH PERSOHNLL IN REACIOR BUILDING. NO LFFLCT UN PUBLIC HEALTH AND SAFELY.

lICLHSED 4 SlHIOR OPERATORS IILM N01 APPLICABLE AUX IH-CORE NEUTRON DETECTORS REMOVED TO LOAD FINAL 2 FUEL ASSEHBLIIS.

THLSE PkOVIDED AUDIBLE COUNT RATE IhDICATIGH 184 SIDE CONTATHMLHl.

S!bCE AUDIBLE COUHf RATE INDICATION IN REACICR BUILDING IS REQUIRLD AT Att IIM ES IN MODE 86, AUDIBLE INDICATICH PROVIDLD BY PERMANENTLY INSTALLED OUI-CF-CORE DETECTORS.

ThREE MIL E ISLAND-2 05000320 021678 LURING SURVEILLANCE TESTING THE REVERSE POWER RELAY ACTUATED CAUS!NG DIE jfl[RG GihERAIOR SYS + CONTROLS 78-007/03L-0 031678 SEL GENERATOR 0F-X-1B TO TRIP, NO ALVfRSE iftECT ON THE HEALTH AND SAFL Illil R un t h T A T I DH + CONTROLS 021000 39-DAY lY OF THE PUBLIC COUL D HAVE RESUL TE D CE C AUSE IHE REVERSE POWER RELAY IS buliCH BYP ASSED DURING (MLRGENCY OPLR AlING MJDE AND DIESEL CENERATOR Lf-X-1A AS C bf M 0;iL N ! FAlluRE Rt.QUIRLD WHILE IH twbES S ANu 6 WAS OPERABLE.

INSIRUMEHT 11LM NOT APPLICABLL THE PROBABLE CAUSE OF 1880 REVERSE POWLR RLLAY ACTUATICH WAS A SPURIOUS A CTUATION OF THE RELAY.

Tile RELAY WAS RESLI AND THE SURVEILLAtiCE It Si DN THE DILSLL CLN(RATCR JAS RfkUH AND SUCCtSSfutLY COMPLLIED.

NO TURIHLR CORRECTIVE ACTIDH IS kEQUIRED.

THRI E MIL E ISLAND-2 05000320 021778 AFIER IHillAL FUELING IT WAS r,ETERMINED THAT CORE ALTEERATIONS, IhSLRTIO kIACTUR VfSSfl INTERNALS 78-006/011-0 030278 H O f-INCORE DEIECTORS. HAD BELH NACE UHEN CONIAIHMENT INTEGRI1Y H/D BEIN INSIRU:IT HI A T ILH + CCHIROLS 020956 2-WELK BROKfN AND UNILE DIRECT CC:LwHICATIONS WITH THE CONTROL ROUM WLRE NOT N SENSUR/DE TECTOR/L L EMEN T AINIAINED.

SINCE THE FUEL W AS UNIER ADI ATE D AND NO ACTIVITY UAS RElfASED DE F LCTIVE PROCEDURE S THLAt WAS NO ADVERSE Ef FECT 10 IHE HEALTH AND SAFEiY OF THE f uBL IC.

hui APPLICABit 11EM NOT Aff L I C ABL E PRIOR TO INSERTION OF INCORE DEllCTORS IT HAS NOT RECOGN!2ED THAT THIS E VOLUTION FELL WITHIN THE DEFINITI0H CF CORE Al 1[R A TIONS.

TO PkEVENT fUT URE RECURRENCE, SHIFT PERSUWNFL INSIRHCTE D lHAT INCORE MOVtMLHl5 00dSTIT UTE CORE ALitRATIONS.

FUELING PF,0CLDURES WIL L BE MODIf!ED.

THRfl MILF ISLAND-2 05000320 022478 DURING MODE 5. WH!lE PERF0kflING FINAL TURNOVER THSPECTIONS, II WAS DETE R FIRE PHOTLCIION SYS + CONT 78-ChE/03L-S 032578 MINLD THA' I H R t. E FIRE PENFTRATION SEALS UlRE HOI FUNCTIONAL, PER T.S.

3.

PlNLlRATIONS.PRIMRY CONIAINMNT 02I001 30-DAY 7.11.

BEL.AUSL THERE Wit NO FIRE AT THE T IMt', AND BECAUSE A FIRE WATCH H EIECIRICAL AS IMMEDI Alf tY POSIE D, IHIS LVLNT PkODUCLD NO ADVERSE IllPACT OH THL HEAL

~ CISIGd/ FABRICATION tRROR TH AND SAfLYY OF THE PUBLIC.

CONSTRUCIION/ INSTALLATION IllM Nui APPLICABLE SE A.S WERE BkEACHE D LURING COMPL E TION OF CONSTRUCTION.

FIRE WAICH WAS P 05,ED AND SLAls RETURNED TO FUNCTIONAL SIAIUS.

CONSTRUCTION P[RSONNtt H AVE BEEN INSikUCTLD AS 10 THE NEED TO COMPLY UllH THE REQUIREilLNIS Of TE CH SPLC RELATIVE 10 FIRE BARRIER SEALS.

~

CN MAY 18, 19'9 LER OUTPUI ON EVENTS AT ilmI E MIL E ISLAND 2 PAGE 5 N

' k Of1 '969 10 THE PRESENT GUTPUI SlRitD BY FACILITY AND EVErli DATE FACitITY/ SYSTEM /

w C OM/0Nf t11/C UMl'Ulit H1 SUBCDDE/

D3Ckli NO.' EVENT DATE/

CAHLE/CAUSL SUCCODE/

llR t 0./

REPORT D A ll' /

EVENT DESCRIPTION /

(UiPONLNI MANUfACTUR' CONif0L NO. REPORT IYPE CAUSE LLSLRIPTIUN THLEE M!t t ISt &NU-2 05000320 030278 DURING PRE-OP ILSTING OF CCNIROL RCD DRIVE il[CHAN!SMS 20D DRIVE TRIP PRE REACTIVITY CGNTROL SYSTEMS 78-009/03L-0 051678 AKERS utRE CLOSLD AND CONikOL RODS WITHORAUN FCR FRE-OP TESTIhG PPICR T rCNIPOL RCD bRIVE NECHANISMS 021002

!0-DAY 0 PERT 0hr1ANCE Of CAD TRIP bRfAKER FUNCTIONAL TLSI.

THIS EVENT DCCURRLD SUCCOMPLil1Ni NOT APPLICABLE WNLN RfACIOR COOLANT BORON CONCtNTFAI!ON WAS IN EXCESS OF 2.000 PPtl AND PERSCNNEL E vi:CR PRODUCED NO ADVLRSE EttLCT CN PUBLIC HLALTH ANG SAFEIY.

LICtNSID 8 S t ri!OR OPERATCRS IfiM NOT APPLICA14f.

II WAS NOT REALIZED THAT WHEN CRD BREAKERS CLOSED SUEMODE STATE HAD BEE 1 EHllRt D WIIHOUT ALL SURVEIL L ANCE REQUIREMf HTS H AVIf;G BEf M S ATISflE D.

CR D BREAKERS UtRE OPENLD, AND ALL SURVLILLANCE RLQUIRLMENTS WERE SAilSFIfD BEFURL PROCLEDING.

THRLE MILE ISLAND-2 05000320 030378 ON MARCH 1 1978. STATION PERSONNEL WORKED IN THE INDUSTRIAL WASTE TREAT DIHIR AUX WATLR SYS + CONTROLS 78-002/04T-0 030878 tiL U T Sv5f[o (IWIS) '. UMP TO REr:0VE PLUCCED IHLET STRAINEk3 ON 1+0TH WASIL COMP 0NENI CCDE NOT APPLICABLE 021288 2-WEIK INFlufHT FfED PJMPS AHD 10 CLEAN DEBRIS IkOrt THE WASTE INtlVENI t il D f uit S U B CO::PON[ N 1 NOI APPLICABLE P SUCTION P!I.

AS SAFETY PRECAUTICH FCR WCRKERS AN EMLkGEllCY BACKUP PUM PLR50NNEL tRROR P WAS 11MPORARILY INSTALLED IN THE S uitP. O rt MARCH 2, 1978, A tt OlERATICil Oihtk AL CHECK Of THE IWIS SUMP t0UND THE Lill h Gt N C Y BACKUP PUMP RUNNING.

AI FR lief 1 h0i APPLICABLE OXIllAIELY 60,00G GALLONS OF WA T[R W AS f1!SI AKE NLY DISCHARGED 10 RIVLk.

THE LMERGENCf PUMP WAS S TOPPED AND MMOV L D t RCit T HE SU:tP.

IH2LL MIt t ISLAND-2 05000320 030718 CUNTRARf TL IECHNICAL SPEC 1EICATION 4.0.5 WHICH 1HVOKES ASME $[CTION XI RCAC CaOL CLEANUP SYS

• CONT 78-010/0!L-0 040478 TESr ?HG FDR CODE CLASS 1,

2, AND 3 PUMPS AND VALVLS, THE RjVER WATIR PUM VAtVis 021003 30-DAY P CULLET AND PRELUBE VAlbtS. AND THE ktDUNDANI RCP SEAL INJ[CTION VALVf5 GTHfR HAD N9I 'BEEN FUNrilCHALLY TESifD BEFORE THEIR RLSPECTIVE SYSILt15 HAD BL LEftCI've PROCIDURES EN PLACED IN SERVICE.

Hal APPLICABLL IllM NUT APPLICABLE PRLLUBE AND REDUNDANT SEAL INJECTION VALVES WERE NEWLY IDENTIFILD AS BEI NG WITHIN IST SCOPE HAVING BEEN ADD L BY DES!CN Cit ANGC S.

RIVLR WAllR PU MP OUil E T VALVES NOT IhCLUDLD IN ORIGINAL ISI S u bf11 S SION DUE 10 ti!SINILM PREIATION Of THEIR OPERATION.

THESE VALVES hAdE BLEN Ih00RPORAILD INIO ISI PROCEDURLS AND ILSILD.

THRtl MILE ISL Arid-2 05000320 031178 T.S.

3.6.1.3 VIOLATED.

L H I E R E D r-C D E 4 W11HOUT PROPERLY ESTABLISHING CUN CNit t:NI ISOLATION SYS + CONT 78-011/03L-0 040778 I A INi1L N T INTECRITY, SURVEILLANCE ON R.B.

E00R SLALS NOT PE R' OEUL D WlIHI PE NE IR AT IONS.PRIMR f CONT AINMNT 021004 30-DAY H PklVIOUS 72 HCURS.

All CON T AINT1[t!T AIR LOCK D30RS WLEE If ?1E DI A T E L Y TE PIRSONNEL ACCESS STED.

R.B.

PtRSONNEL HAICH INNLR 1002 F All t D 10 MEET LEAKAGL ACCIPi?NCE

~ OLFLCIIvl P 0CLDU6ES CRITERIA.

SINCE UNII HAD tl0i YET GCNt CRITICAL NO EFFECT UN HLAllH AhL NOT APPLICABLE SAFETY OF PUBLIC.

PiilstdRGH-LES N0!NES STEEL C0 SURVIIL L ANL. PROCECURE NOT SPECIFIC LN0 UGH TO IDENTIFY THAT R.B.

DOOR SE At LEAKAGE IESI MUST BE NET 10 BrATH EST Att !SH AND MAINTAIN CCHI A IN.1L N T I HTLCRITY.

INNER DOOR FAllt' DUE 10 D*f1A^ED 0 RIhG $!ALS.

THf 0 R I N G L.' A S REPLACED AND INNER DOOR Rela STED S ATISt ACTORILY.

PROCEDURLS WLRL CHAN GLD TO CLARIFY TESTING RLQUIRLliLHIS.

I NAY 18, 1979 LER OUTPUT ON LVENIS AT THREE MIL E ISLAND 2 PACE 6 FROM 1969 10 THE PRESENT tACILITY/ SYSTEM /

C CMf orIE H f /CUHFUNEN T SULCODE/

DOCKLT NO./ EVEH1 DATE/

CALSf/LAUSE SUBCODE/

LER HO./

REPORT DATE/

EVENT DESCRIPT!0N/

CCfirCNCHT MANUFACTURER CUNIPUL NO. REPORT TYPE CAUSE DESCRIPIIDH b

illLIC MILE IS L AliD-2 OSC00320 031478 ENTE Rr0 MODE., WITit ONLY Ot'E OPER ABL E BUIL DING SPR AY SYSTEM SINCE SURVEI ChibMNI HLAT Ftr.0V STS + CCHT 78-012/03L-0 041078 LLANCE ON BUILDING 55' RAY PUNP 1A WAS NOT CURPENT WITHIH THE L Ill!T S La TL e==

fuMPS 021005 30-DAY CH SPEC 4.0.2.A, 4.0.2.8 AND 4.T,.2.1.B.

PU:!P 1A WAS PREVIOUSLY TESilD S 01hlR ATISFACTORILY AHD WAS AGAIN TESTED % ATISFAf f 0RILY FOLLOUING fitIS tvilli.

PERSOHNEL ERRCR HO EFffCI ON THE HEALTH AND SAFEll UF THE PUBLIC.

LICENSID 4 SENIOR OPLRAl0RS IItM ti01 APFLICABLE CLERICAL ERROR.

DATE WHICH MUST BE USFD TO DE T E R*11 NE IF A SURVtTLLANCE IS CURRENT IS THE EARLIESI DATA DATE AhD NOT 'HE DAiE THE SURVEILLANCE W A S CuflPL E TC D.

THE DAIE SURVLIL L AhC E WAS CC11PL E TE D WA S RECCFDLD OH IHE N ODE 4 CHECKLIST.

OPER ATICHS PERSONtKL WIL L BE REIH>sRUCIED.

TliREE MIL E ist AND-2 05000320 031578 B DIESEL GEN TAGGED OUT Of SERVICE 1445 FOR NAlbfENANCE.

RLDut. DANT DIES titt PG GINLR AIUR SYS + CONIROLS 78-013/0l1-0 032778 EL CIN HOT Et MONS T R A T E D O.*L R AB L E UNTIL 1805.

ADDITIONALLY EREAKER ALIGr8 LNGINES.IHTERNAL COMBUSTION C21006 2 -ilL E K MENT RLQUIRED BY T LCil SPEC 4.8.1.1.1.A H0T PIRFORMED UHi!L 18c5.

HQ EFF SHDCCMP0HENT NOT APPLICABLE ECT ON HEAli.i AND SAFETY OF PUBLIC.

PERSONNEL ERROR CONSaRUCTIUH PERSONNEL ITLil NJi APPL IC ABL E INADEQUATE REVIEW OF TECH SPEC 3.8.1.1.B AND ASSOCI AICD ACTION ST Al[Mf NT SUCCESSFULLY TESTED REDUNDANT DIESEL GFHERiiC1 AND VERIFIED EWEAFIR A LIGNNLHT IN ACCURDANCE WITH ILCH SPLC.

.' L R S ')HN L L WILL BE I N S I R tsC J E D.

THREE NIL E ISLAND-2 05000320 0315/8 WHIPc THE UNIT WAS IN MODE 3 AND THE SURVEILLANCE REQUIREMINTS OF T.S.

4 C H I NMlli ISCLAIIDH SYS + CONT 78-014/03L-0 041278

.6.s.3 WERE BEING PERIORMLD, lHE INNLR DOCR S E /. t *, OH dOTH AIRLLCKS FFTLE PLMLIRAIIDHS,PRIMRT CONTAINMHf 021280 30-DAY D

AT LEAST ONE DOOR OH EACH AIRLOCK LIAS MAINTAIHLD C1 NLU e P THF ACTI PLRSchNfL ACCESS OH STAltl1LHI 0F T.S.

3.6.1.3.

SINCE THE UNIT HAD NOT 'ET COHL CRITICAL, CLf;P0HL'ei F All HRE THERE WAS NO EftECT ON THE HEALTH thD SAFLT'.' 0F THE Pd3LIC.

11LCh AHIC AL PIIISLURCH-DES MOINES STEEL CD IHE INNER DOORS DID NOT SEAT WITH A CLOSE ENOUGH TCLOANCE.

THE UNI T A S PLACED IN COL D SHUTDOWN WI TillH 30 HOURS fuk OTHER RECUIRfD MAINTEHANCt WHIL E IN CORD SHUIDOWJ. B0lH INNER D00RS (fLRE ADJUSit? 10 F50 VIDE A C LOSER FIT AND RETEST ED AS S ATISF ACTOR).

THREE Hilt ISLAND-2 05000320 031778 AfiER DESIGN REVIEW BY DIN RECOCHIZLD THAT POSSIBIL ITY EXISif D FOR EHCl O CUOLANT RECIRC Sf5

• CONTROLS 78-015/0ti-0 032773 SURE END CAP Of OfSG INSikUMENIATIGH INSPECIICH OPLNING ASSLIELY TO 00iA HEAT EXC H At;GL R S 02I007 2-WEEK TE THERLBY CAUSING DISEt:OACLNflii 0F NUT 10 S1HD. END CAP T1AY HAVE L OU SI N S I E t.tl GLHL UIOR ED AND DROPPED INIO OISG HAD 11f15 hui BELH DI SCO /LRED. ON INSPECTION LLI

~ DLSICN'FABRICATIGH EAROR E Rt11 N L D THAT END CAP llAD HOT LOOSLNLD.

HQ EffLCi OH HEALTH AND SAtLIY 0 EESIGN f PUBLIC.

bALCOCK 4 WILCOX COMPANY A WEL D WAS PL ACED IH THE ENCLOSURE END CAP, THUS PREVENTING ITS ROTATICH T

Un ON

~

I C

e-MAY 18, 1979 LtR OUIPUT ON EVENIS AT THREE MILE ISLAND 2 PACE 7 FROM 1%9 10 THE PRESENT GUTPUT SORIED BY f ACILITY A'iD LVENT D ATE iACIlITY/SYSitM/

CC:livN f N T /C 0l.i'0Hf N T SUBCODE/

DGCKET NO./ EVENT DATE/

CAUSE/CAUSE SUBCODE/

LER NO./

REPORT DAIL/

EVENT DESCRIPTION /

COMPUNENT flANUFACTURER C O N I RI". NO. REPORI TYPE CAUSE DESCRIPi!ON InRiL t;ILE ISLAND-2 05000320 032278 IN MODE 3 PERFORMING BUS VOLTAGE VLRIf!CATIDH AND OPTIMIZATIDH STUDY TWO t HCnb 5AiETY FLAIR INSTR SYS 78-016/011-0 040578 INLIPtNDENT NUCILAR RIVER WATER LOOPS WLRE NOT DPERABLE 1.5.

3.7.4.1 P HiW S 021003 2-WEEK TWO NUCLEAR RIVER WATLR PUMPS IN ONE LOOP COULD NOT BE STAkiED.

Ulbf R BLC AUSE A RtDuriCANT L OOP WAS AVAll AllL E THIS E"'.HT PRODUCLD NO ADVfRSE Ei DESICN/FABRICA110N EkROR FLCTS ON NLAliH AND SAFETY of THE PullL IC.

b[ SIGN ITf M NOT APPL ICABLE THE BURNING OUT Of A SUPERVISORY LIGNT B UL B ALLOWED A "$NEAK" CURRENT PA TH 10 BE INTRODUCED, PREVENTIHG RELAYS l Fort DE-f HE RGIZING AWD F Ff VENILD B01H NUCLEAR RIVER WATER PUMPS IN A LOOP FROM OPERATING.

THE BUkHED-0UT LIGHT BUL8 WAS REPLACLD.

NUCLEAR RIVER WATER PUMP CIRCUIT DESIGNS WILL LE REVILWED.

lHPLE MILE 151AND-2 05000320 032478 OURING AN EQUIFMENT INSPECTION, IHE 1/2 INCH IHLET HIPPLE SOCKET WELD JO KISIDUAL HEAT RIMOV SYS + CONT 18-017/03L-0 042178 INT 10 DH-V12tB AT THE 14" Dit-P-1B SUCTION LINE BOSS WAS ObS(RVED TO BE PIfts, FITTINGS O21c79 30-DAY LiAKING.

SINCE THfRE WAS NO ACTIVITY IN Till RC SYS TIM AND THE LE AK WAS ILS$ THAN 4 INCHLS NLGLIGIBLE

'HLRE WAS NO EflECT OH INE HE AL TH /.ND S AF ETY OF THE PUBLIC.

bLSIG:t/ FABRICATION ERROR CD:4SIRUCT!0N/ INSTALLATION Iltri NOT APPLICABLE SYSTIM HAD UNDLRGONE TESTING PER SURVEILLANCE REQUIRIf1ENTS OF T.S.

4.5.2

.D.3.A AND NO LEAKS OBSLRVLD; BEL IE Vt D T Hi WELD JOINT WAS DAfi'GED DURING CONSTRUCTION ACTIVITIES SUBSEQUENT TO TESi!NG.

WEL D JOINT HAS BIEN FfP AIRED WITHIN 1.5. 3.5.2 REQUIRLMLHIS. NO FURTHER ACTION CONSIDERLD NLCE

$5ARY.

THM E NILE ISLAND-2 0500030 012578 WHILE IN MODE 4.

IT WAS DETEktilhf.D GHLY ONE BORON SOURCE ILOW PATH V'.RIF FEACIIVITY CONTR06 SYSTEMS 78-023/05L-0 042478 ILD OPERABLE PRIOR TO MODL 4 LNiKY, 1HUS VIOLATING i.S.

4.l.

2.B.

BLCA C 01.P 0 N f N I CODE NOT APPLICABLE 021278 30-DAY USE THE VALVE LINIUP f0R THL RECdIPED SECOND F LOW PATH W45 f t UND 10 L L U SUECOMPONENT tiO T APPLICADLE HCHANGED FROM THE PkEVIOUS SURVLILLANCE PLkIOPMANCE, THIS TVLHT POSED tiu PL R horiNL L LERUR THktAT TO THE llEALTH AND SAFETY OF THE Puf,LIC.

LIClHSED 8 SLNIOR OPERATORS ITLM Ndi APPLICA3LE CLERICAL Ef40R.

SURVEILLANCE PtRIORMED IN ACCORDANCE WITH MODE $ REQUIR (MENIS.

SLCCND SURVEtLLANCE DUNE IP ACCORLANCL WIIH M1DE 4 kE^UIPfMENIS PERSONNIL WIll BE INST RUCIL D Cath.LRNING NL E D 10 REI LRENCE PRCC ELURE D ATA SHELIS AND VrRIf f rJRPLHT VALVE LINLUP.

T hr ! E fill t-ISLAND-2 05000320 032578 IN MODE 3 FAILUPE OF AN AfWLIFILR PRODUCED EPRONE095 READINGS ON AB50Lui

,. A f t ! Y RIL AT E D DISPL AY INSTR 7A 619/01I-0 040578 E COHikOL ROD POS!!!ON INDICATOR FOR RUD $ O f-CROUP 8.

POSITION Of CONI I N S IF UflE N T A T ION + CONTROLS 321009 2-WEEK POL POD WAS LLi[LilINLD rROPt PUL SE SitPPING PUSITION INDICAIOR AND 20ht R F00ER SUPPtY FLRENCE INDICATION. ?!00E 2 ErlTERLD CHNTRARY 10 T.S.

3.0.4.

No ADVLRSE

~ PLNSONNEL LRR0R LFIECIS ON HLAllH AND SAfLiY OF PUBLIC.

LICfru.LD 1 SLNIOR OPERATORS

!TLM 00T APPLIC/BLL IMCORRECT INTERPRETATION OF T.'

3.1.3.3.A.2 LED TO VIOLATION OF l.S.

3.

0.4.

APPROPRIATE STATIbH P E RS0 tine L WILL BE It:SIRUCTED AS 10 IliE Clim L C T INILRPREIAi!ON Of T.S.

D i

MAY 18, 1979 LER OUTPUT Oh EVfNTS AT IHRE E MIL E ISLAND 2 PAGE 8 N

F R0f1 1969 10 THE PRESENT OUTPUT SORTED BY FACIL IIY AND EVENT DATE Q

F A CI L I T Y/S Y Silll/

CCNt0NtNI/ COMP 01LNT SUBC00L/

00CKLT LO./ LVENT DATE/

CAUS[/CAUSE S t;D C O D E/

LER NO./

Rff0RT DATE/

FVENT OfSCRIPTION/

G b;1P O N E N I NANUfAClURER CONTROL NO. REPORT TYPL CAUSE DESCRIri!ON THJEE MIL E ISLAND-2 05000320 012978 IN MODE 2 VITAL BUS 2-1V BICAME DE-EtiLRGIZID REQUIRING OPERATION IN ACT!

1. C ONSITE PouCR sis + CONIROLS 78-021/03L-0 050178 ON STAILMENI 10 1.S.

3.8.2.1, 3.3.2.1 (table 3.5-3 ITEMS 3A AND 38), 3.3 INSTFUMENTAIION

• CCNikOLS 021952 30-DAY

.3.5.

AND 3.3.3.6.

NO ADVLkSE S AFE TY CONC [ RNS, REACTOR TRIfPLD, E CCS FU CONT ROL L ER KCTIONED PER DESIGH, AND VITAL BUS WAS RE-ENERGIZED WITHIN T lf.E F R Af;f Cf C Cs :'.,HL N I FAILURC APPLICABLE ACIION SIATINENIS REIURNING AFFLCIED tCUIPNLHT 10 CPERAbtE S ELLCTkONIC T ATM.

50tTD staff CONIR3Ls, ins.

VITAL BUS INVERTER FAILED TO FUNCTION PROPERLY IN FREE RUNNING MODE.

UN EN ALTERNATE (AC) SUURCE TRIPPLD DURING SFAS IESTING RESULTING IN ELOUN FUSE ON DC INPUT.

Alif RNATE SOURCE AC ERI AKER WAS CL OSED, LNERGIZING v!

1AL bus AND FAULTY INVERT L R CO:4 TROL f10DULE AND FUSE WERE REPL Act D.

IhMLE ft!LE ISLAND-2 05000320 040478 UllI L E IN MODL 5, WHILE PEFFORMING SFAS ILSTING. A huCLEAR SLRVICE CLOSED ALSIDUAL HEAT REMod SYS + CONT 78-024/03L-0 050478 COOL ING VAL VE (HS-V838) FAILLL 10 OPEN, li:US VIOLATING T.S.

3.7.3.1 D

VALVES 021277 30-DAY ECAUSE THE UNI T WAS IN COL D SHUTDOUN ( fl0 DL 5) AND THE SYSill1 WAS NOI RfQ 10ZlLL UIRLD, fHIS EVLHT POSLD NO TimEAT 10 THE HEALIN AND SAFETY OF THE PUBLIC C C.;i ON L N i FAILURL r:LCH ANIC AL ASSOCIAILD CONIR0L EQUIPMEHi THIS EVENT WAS CAUSED BY THE MALIUNCTICN Of THE SOLEHOID OPEPATED PILCT VALVE.

THIS SOL LHOID GPLis ATED PIL OT V ALVE WAS REPAIRED AND REIUFNLD TO SLRVICE.

THRtl MIL E TSLAND-2 05000320 040878 WHILE IN MODE 3. RCS WIDE RANCE PRiSSURE TRANSMITIER RC-3A-PT4 F AIL ED, C LNG 1RD SAfEIY FLATR INSTR SYS

'8-026/0iL-0 050278 AUSING TRIP ON SFAS CHANNELS RC2A/B.

ACTIGH ST AIEf1LNT ASSOCI Af f D WIIH I

/

INSI RU116 N T A T 10N + CONTROLS 021276 30-DAY

.S.

3. 3.2 T ABL E 3.5-3.

I T E11 ft UAS ENTEMED.

BFCAUSE REDUNDANT INSTRUMsN TRANSMIT 1ER TATION HAS AVAILABLE IHIS LVtni POSED NO IHit E A T TO THE HEALTH AND SAFLIY

(. 0MP O N t N I FAILURE Of THE PUBLIC.

L L L CI F0t:IC fon0F0 CO.,

THE THIS EVENT WAS CAUSED BY A MOISTURE-INDUCLJ SHORT CIRCUIT IN THE TERMINA L E0x ASSOCIAILD WITH RC-3b PT4.

THE SHORT WAS FOUND TO EE IN IHf IPANi MITILR CIRCUIT.

A klSISIOR IN THE TRANSM!!lLR JONCTION BOX U45 RLPLACLD THE TRANSMIi1ER WAS THEN ZERO SPANNED, AND RETURNLD TO SLRVICE.

1 Hl:IE MIL E ISLAND-2 05000320 041378 Id MODE 2, MET-LD I- 00RMLD BY B&W THAT CONDITIONS NOT SPECIFIC A!' Y CCHSI CGdlANT RECIRC SYS + CONTROLS

'8-027/01T-0 050273 DIRLD IN THE SAk CR I.S.

EXISIED RLGARDING HYPOIHETICAL SMAll E2EAK ON D PUNPS 021275 2-ULLK ISCHARrE SIDE OF RF.CTOR CG01ANI ibHP.

PENLDIAL ACIION NLCLSSARY TO PRE 011H R VINT OLVIlOFMLH1 OF UNSAFE CUNDITIONS; T.S 6.9.1.8.1 APPLICAPLE.

NO ER

~~ LESIGN/ FABRICATION ERROR LAK ACTUALLY OCCUkRED.

No THREAT 10 HEALTH AND SAFETY OF IHE PUBtIC.

DLSIGN IILM NOT APPLICABLE SMALL BREAK ON THE DISCHARCE SIDE OF A REACIOR COOLANT PUMP IS MCkE L IMI TING THAN BREAK ANALYZID IN !AR.

H3ST ACCEPTABLE SOLUTION WAS F1tHUAL CR OSS CONNLCIING HPI DISCHARGE AND MANUALLY OPENING DISCHAkCE VALVES.

I

N*

1 11 A f 13, 1979 LtR QUTPUT ON LVENIS AT THR[1 NILE ISL AND 2 PACE 9 N

FROM 1%9 10 THE i' R E ' E N T CUIPUT SCRifD bY FACILITY AND EbENT DATE iACILIlY/515ftM/

C c'IP U N E N 1/ C CI'.P C H E N T SUBCCDE/

Dl; C K E I NO./ EVENT DAT[/

CAL 5'/CAV5L SULCCDE/

LIR NO./

REPORI PATE/

IVENT CE LCit !P T I ON/

C0& OhlNI MANJfACluRER CCHIECL N3. REPORI IIPE CAUSE C15CRIPTIOft ik il MILE ISLAND-2 05000320 041578 Wi!LE IN MODE 2 AND PERFORMING SURbEILLA*tCE 2303-M10. VENTILATICH DAM 1f2 AIR COND HEAI,000L.VLNT SYSTLM 78-029/03L-0 05107A D-4095 (CONTRCL tulL DING E nI AU5 7 ) DID NO T CL CSE AS REQUINID LPCN F1 CLIP VALV65 021274 30-DAY Y Of A H I Gli CHLCRINE SICNAL.

EECAUSE A ElIUh[' ANT CCMPONfHI WA5 CFLk/LLE SIhGt t BLADE AND LECAU50 DAMPEP D-4093 WAS RE510WLD 10 CPLkABLL ST ATUS WIIslIN Idi i P[k;DNN!L EKR0k IME F R AME RE 2UlkE D BY THE ACIION SI Alt f1LNI 0F 1.5.

3.7.7.I, THIS [VtNT P M11NIENANCE & REPAIR PERSONNEL OSED N0 IHRLAT 10 IHE HEALTH AND SAFETY OF THE Pt:BLIC.

IILM huf AFPLICABLE IMPROPtRLY ADJUSTED DAMPER L!hKAGE.

LINKAGE WAS SDJUSTED. LUBRICAT[D AN D CYCL t D 10 ASSURE PROFLR CPERATIGN.

I riW L l( A !! E E CWF [ R W A S k E I L R h f D TO SE RVIC L WIT Hits TIMc 'ON51kAINIS OF lif E h.b.

alCil(W STAILMLNI.

SURVEILLA NCE 2303-M10 WAS SUBSE;UtNTLf REFERICh tD SAlliF8(TCRILT 1HRil MILE ISL AND-2 0$G003?O 041778 IN MODE 2 GN 4/17/78 RPS CHAhN(L C ikiPPID ON HI f i t6'(. (NTERfD ACTILN 5 ktACIOR 1 RIP SYSILM5 78-030'03L-0 G51778 TAitMENT 2 Of 1.5.3.3.1.1.

C H AP.N E L E X AM i t< f te. NO FEQflLEMS DISCOVLktD. RE I N 116 Lint H I A T ILN + CONTROLS 021612 30-DAY IURNtD 10 SERVICE.

CN 4/20/75. RP5 CHINNLL C ik1PPLD ON HI F l u.:.

INsL5 Ef a%k/DET ECICR/EL E MENT TIG A TION REvt AL E D SPIP it:G NCW CONIINUOUS CHANNIL PLACLD IN IFIPPED Cu'i L0fMNINT fAILUCE DIIICH.

THREE OTHLR RELUNDANI IN 51 RU61ENI S C ON11HUCU$t't MUNIIGRIhG T !:( )

I N 51 F. U:4HI A!1E PARAMETLR.

NO LFfLCT ON HL.LTH AND SAFETY LF PUBLIC.

(K S T i r4GHOU S L ELECIRIC CORP.

INIIIALLY SPIKE ATTRIBUTED TO ELECTRICAL NOISE U:D CHANNEL RfiUEN!C TO 5 ERVICE.

AFILR REMOVAL OF N!-7, AhD Ur0N Lief 11NAilCN, FAILUk[ LLil'MIhED 10 SE CAUSED BY DAMACE DURING INITIAL INSTALLATION. N!-7 hAS EL[N FLCL ACLD AND F AIL LD DEllCTOR I 's LEING kETURhtD 10 MANUFAC'U2F +CR PLPAIR T HK L E f'11 L L ISLAND-2 05000320 041978 WHILE PERFORMfMG INE MONTHLY $FAS R.B.

150LAIION mhh CUCtJNL FtSTING. C3 C li l N. U d ! 15DLATION Sf5 + CONT 78-031/03L-0 051878 HTAINMf4T ISOL ATION VALVE C A-V3 F AILID IJ CC:1PLI ULT Cr C;f aCN K[CEIPI LCMrchENT CODE N3I AP 'L IC ABL E 02 f 618 30-LAY Cr ITS E.5.

SICNAL.

B[CAU!E A kEDUNDANI ISCLAljGN S kt i( Ws AVAILALLf, SU L C OMt' J:i[ N T NOT APPLICABLE THERE WAS NO LO55 0F CON T A f t.t1L MT INifCRITY AND tut W ie L Htil U t $ t J DESICM/fABRICATIC?t EkROR

[f f E ON THE HEALIt AN3 51'l1Y OF IM FUBLIC.

CLNS TCUC Y 10ru lM I AL L AIICH Ilif t NOT APPLICAELE IW0kRfir WGet 5 WITCH Sfi2ING 0F Lk1 tTE D C A-V3 Fh0M FuttY CL051N5 CA-F3 NANUALLY CLOSED IH A'ClPDA.AE WIir T.5.3.6.3.1.

THC TORGUt. SUIICN SE

's i l N G RF, ADJU5 f( D AND V AL VL R L IUR 10 CPERABLE STATU, WITHIN 4 H U L% 5 A S SPerIIIED IN ILCH $PLCS.

TURtt MILE ISL AhD-2 05000300 042378

!h t*U Di i Rt' AL IOR 1 R I F P f D F R ?tt i n it. I. P. F95 RAPIPLY COCLED LCuN AND 3

!! A I N LIEAM LY5fLf15 + CONTROLS 78-033/Oti-0 650878 L P R L 55 L;;t ill' D. DURING LEPNf5Sbhi/AIION. SAFETY INJLCl!ON WAS INITIA1LD.

VALVE 5 021273 2-WLLK kCS AND PRESSURilfR C00100WN RAILS WERE t XCt LCL D ( T.S.

3.4.9.1 AND 3 4.

OlblR 9.25 P#tSMiRI2fM VJL BELOW t!MIT5 OF T.S.

3.4.4).

CALCULATICW2 AND PA

- D[ 510tu f ABRIC AT ION [RRCR L10CHL/d5T2Y 5H04 THAI COEL Rt MAINED COVLRED AI ALL 11MLS AND hJ R[LLA5L CON S T RUC T I0tu l NS I AL L A TION OF k Au!D ACIIVE MA IlitI AL RESULTED.

Illit HJi APPL IC A BL E FOLLCu!Nt; Rt T T'I P. MAIN STEAM RELItF VALV[5 DID NCT RESEAT AT CGRRfCI IR 1550AL.

iE J W'I t R SYSif f t R E SPO N 5 t. ELCW $INCE IhlIIAL INT E GR Alt D C CatiktL S Y 5 i t et M *5 f i % SIILL IN PbOCRL55.

C GT13 I N A T I GN GF RELIEF V Alv E S # 9 IllfK TO REstaf JM CLNT!hu!NG 10 FLED STEAM CLNfRATORS RESULIED IN kl.. D C L P RL5tURIZNIGN AhD CGOLCouM. RV5 WILL BE TL5ILD.

e Ch N

fnY IB, I'J 7 9 LER CUIPUT ON EVENTS AT THRfE MILE ISLAND 2 PAGE 10 g

I R ott 1969 10 THE PRESENT CUTPUI 50RILD BY FACILITY AND EVLtti DATE e

FACILITY /5YSTEN" C ui.P CHt tii/COMPONE N T SUSCODE/

DUCKEI NO./ IVLNT DATE/

CAUSE/CAUSE SUI CODE /

LER NO./

REPORT DATE/

LVENT DESCRIPT!0N/

E UMPLt.t NT M ANul AC T URL R CONTROL h0. REPORT 1)PE CAUSE LLLCRIPTION 13thtL T1!LE ISLAND-2 05000320 04247S IN MODE 1 REACTOR TRIP CAUSED SEVERAL F1AIN SifAM RELIEF VAtVES TO LIfi.

M t I ti SilAM SYSitNS + CONTROLS 78-0 34/O li-0 050878 CUL 10 INADLQUATE OLSICN, SEVERAL STLIL LINLRL USED TO PROTECT THE BELL VALVES 021272 2-WELK CUS IN THE DISCHARGE PIPING UEEl-EJECitD.

BLCAUSE THIS W'S 04 SECC40AkY UlHER SICE OF THE PLANT, At;D NO RALIATION WAS RELEASED, EVENT POSED NO THCEAT LLSION/fABRICAi!GN ERROR IO THE HfAllH AND SAFETY OF THE PUBLIC.

Oi>IGN 11tM Ndi A P P i.. AblE 1HIS EVENT WAS CAUSED BY AN INADEGUATE DL$1GN latICH ALLOWID THE USf of B ELLOUS LINERS QUAL IFIED FOR ISO F/SEC. 51t All b E L OCITY IN A LOCATICN L;hl R E VLLUCIIIts UP TO 950 F/SEC. COULD BE E XPERIE NCED.

THE UN0f k-Df SIGNI D BELLOWS LINCRS ARE BEING REPL ACED BY LINEks GF AN APPkOPRIATE Ii5IGN.

IHRLE Mite ISLAND-2 05000320 042578 IN MOCE 5.

DLRING MdHihtY SURVLILLANCE TESTING CT THE "B" DIEtEL-CENERAI AC ONSITE P0;JLR SYS

• CONTROLS 78-037/03L-0 052578 OR. DIESEL TRIPPED DUE TO HIGH CRANKCASE PRES $URE AFTER RUNNIN", FOR APPR INGIhtS. INTERNAL COM3USTION 021609 30-DAY 0x!NATELY 32 r1XNUTES.

1. 5. 4. 8.1.1. 2. A. 5 E E Q U I R L S A DIESEL BI DEh0NSTRAI SUTCOMPCNENT h0i APPLICABLE L D OPL R ABL E tY kUNNING F OR 60 MIhuiES CR NCRE.

BECAUSE IN UJDE 5 A lid of OTHER HLR DILSEL OPikABLE, EVLHi POSED NO THkCAT 10 HEAlitt 8 SAFEIY OF PUBLIC.

NUI APPLICABLE 114 ;1 Nui ArPL IC ABL E DIESEL GENER ATOR WAS CHE CKED F OR ANY ABNORMAL PARAMETERS BUT NONE ktRE F OUND.

THE DIL5EL WAS REST ARIED AND SUCCESSF UL L Y P AS%[D SUAVL IL L ALCL. I N ADDITION, CALIBRATION O f-CR ANKC ASE PkE55GRE WIiCHLS WIL L LL CHLCALD A ND AIR EJECTOR WILL BE INSPLCIED.

n Wi f MIL L 15 LAND-2 05000320 050378 IN NUDE 5 BUkNS 4 RDE N0ll IED Mtf t D THAT SINGL E AUXIL I ARY TRANSFCrtity 2V5flM CODE i;0 ! APPLICABLE 75-035/Oli-0 050978 OPELATION WITHIN THE NOEf1AL OPERAlING RANGE OF THL GRID WiLL NOT PROVIDE C !tiP O NI N T CODE NOT APPLICABLE 021271 2-WELK SUFFICILNI VOLTAGE LEVELS FOR OPLRAi!ON OF THE 480 V P;010R CONTRutlt25 5'R CDI;PONf N T NOT APPLICABLE DURING PERIODS OF PEAK UNIT AUXILIARY D L c1 A N D. UN!! HAS NOT OP L k A f t I) AT O l H L et

? PUut R LEVtt h 4UIRIIIG MAXI!!Sti UNIT A J AIL I ARIf 5.

NO POTENTIAL FOR ADwE hof APPLICABLE RSE Ef(LCI ON THE HEALTH AND 5AFETY OF THE PUBLIC.

ITill NOI APPLICABLS A/E SHCL?ED THAT WITHIN NORMAL R A F.E (232 IO 238KV) ONE TRANSFORTO CAN'T FROVIDE ADE'tUAlf VOLIAGE L LVit $ 10 5 Ui'PO R T OPLRA!!ON Of t hG T Hi l l< ! hG SAF tiY TEATURES AND BALANCE OF PLANT AUXILIARILS.

IhRLE P05518tt C Ci; R t C I I V E ACIIONS EXI5I.

TH LL MIL E 15L AND-2 05303320 050578 ON MAY 5, 1978, THE IICEN5LE WAS N0ilFIED BY ITS NSS5 VENE0R THAT THE U1 KLAli!VITY CLNIROL SYSitMS 78-03670ti-0 051878 CERTAINTY FACT 0kS ASSOCIAILD WITH THL IllC C E E DLTECIGRS AKE CRIAIER THAN C or PU.iE N T CODE Not APPL! CABLE 021610 2-WLEK THAT ORIGi%LlY CA!CULAffD.

AS A RL5ULi, THE EXISTING FULL INCCe:C MINIM

$UBCO:PCNENT NOT APPLICABLE UM INCOME AND CUT-OF-CORE QUADR!NT POULR IILI LIMIIS MUSI P. E KIDUCED.

5

~ bESILH/tALKICAi!CN 1RROR INCE THE NLW IIL T LIMIIS HAVE NOT BEEN EXCLECLD, THLRE WAS N3 til LCI UN ff$10N THE HLALTH AND SAFETY Of THE PUBLIC.

litM NOT APPLICABLE RELVALUATION PERIORMfD BY H555 VLHDOR BrouCHI ABOUT SY OB5LPvFD CPERATIO NAL CHARACTERISIICS OF INCCEE L;f 1 L C I OR PERIORMANCE AT CPf 6111bG P! ANIS.

APPROFRIAIE PROCLCURE CHANGI5 HAVE BELN NADE AND A IfCH SPIC CHANGL WlCU LSI SUBM!ilLD 10 C0ERECI LXISIING QUADRANT FOULR IILI LI*II5.

7

=

l ON MAY 16, 1979 LER OUIPUI ON EVLNIS AT IHFIE MIL E ISLAND 2 PAGE 11 FROM 1969 10 THE PRLSLNi eACIL?IY/SYSI(M/

b C C:YO:s[ H T/ CCt:PON t HI SUBCOLE/

DOCKET NO./ EVENT DATE/

Q CAUSI/CAUSE SULCODC/

((k NO./

kfPORT LAIE/

EVENT DESCRIPTICH/

CG;70HtHI !!ANUFACIURLR CONIROL NO. kEPORY 1YPE C AUSE DESC R IP T I Utt ThEIL MILT ISLAND-2 C5000320 051278 PERFORMING MONTHLY REACTOR BUIL DING ISOLATION AND COOLING / SAFETY INJ[CTI C n i h;TI T ISGIAIION SYS + CONI 78-035/03L-0 061278 ON SURVt!LLANCE. THE SLTIING OF BS-PS-3260 CREATER THAN ALLOm BLE V A L L;E I h S i k U:HNIAlj0d 4 CONTROLS 02t608 30-DAY OF SPEC 3.3.2.1 BY 0.02 PSIG.

SINCE RfDUNLANT PRESSURE SWITCHES AVAILA3 SUITCH LL AND WITHIN CALIBRATION, NO EffECT CH HEALTH AND SAFETY OF THE PUBLIC.

OlHER Ndf APPLICABLE IItM hut APPLICABLE BS-PS-3260 ERRCR CAUSED B INSTRUMENT DRIFT DURING SURVEILLANCE T!ME IRt3 U[HCY.

CORRECTIVE ACIION TAK[H BY A D J U S I ! rig FRES$ uke SWITCH 10 A VAluf BELOW IHE TECHNICAL SP[CEFICATION TRIP SLIPOINI.

hu FUTURE ACTION FtQUI RtD SINCE MONTHLY SURVEILLANCE WILL Bt PLPFORMr.D AS ELQUIRED.

Ilik I l MILE ISL AND-2 05000520 052078 WHIL E P E R F ORrtING SF AS k E A',"10R BUILDING ISOL ATION AND COOLING SURVEILLANC CLd! ROOM HABIIBliY SYS + CONT 78-040/03L-0 061578 E TLSIING ON NAY 20, 1978 C 0tli R O L ROOM CHILLER AH-C-8B F AIL E D 10 OPERAI INilFUMENTATION

• CONTROLS 021606 30-DAY F.

SINCE THE RfDUNDANT C O N II' O L ROCM CHILLER WAS OPERABLE. THERL WAS NO SUITCH LFFECT OH IHE HLALTH AND SArEIY OF THE PUBL IC.

00:1PdHLNI 4AI(URE NLCHANICAL LORG-WARNLR CORP.

UPON FAILURE OF AH-f-88. ACTION A WAS ENTERID AND CHILLER RETURNED GPERA BLE STAIUS WITHIH RLQUIRED IIME.

FAILURE Of AH-C-8B CAUSID BY MICPO iWI TCH W11H ROUGH tLGL ON STlN, PkEVEtiTING PROPLR OPERATICN.

ROUGH ELLE RL MOVID AND SWITCH REILblED OF.

AH-C-58 RETESTED SATISFACTORILY ON f1AY 23 1978.

THkI E MIL E IStAND-2 05000320 052078 DURING PERFORMANCE OF SURVEILLANCE PROCfDukt 2303-M16 "!MIRECENCY DILSEL L::I RG GE NE R A T OR SYS + CONTROLS 78-039/05L-0 061578 GLNERAIOR AND COOL ING WAllR VALVL OPERABILIIY TEST", THE "5"

DIESEL CEN ftLCHANICAL TUNCTION UNIIS 021607 30-DAY ERATOR F AIL ED l0 STARI.

SINCE THL RELUNOANT EMLRGENCY DIESit G( NE R ATOR S u bC O:;F O N L N i NOI APPLICABLE WAS OPERABLE. THIS DID NOT hAVE AN ALVERSt EftECT ON THE HEfLTH AND SAFE CCMPONENI FAILURE TY OF THE PUBLIC.

TR LH ANIC Al F AIRS ANKS MORSE VLRTICAL SHAFT BLTWEEN UPPER AND L OWE R CRANK SHAFTS FAILED DuE TO IMPROP ER NAIERIAL. A COMPLETE COUPtING OF PROP [R flATERIAL WAS INSI Atl [D AND EF

-X-1B REIURHED OPtRABLE WITHIN REQUIRED IIME.

DF-X-1A ALSO INSPECILD.

PROPER MAILRIAL USED IN IIS COUPLING.

THRLt MIL E ISLAND-2 05000320 0S2378 WilIL E VERIFYING br'lRABILITY OF EMERGINCY DIESEL CENLRATOR "0F-X-tB" FOLL liit RG GE NLR A10R SYS + CONTROLS 78-041/03L-0 C61578 OUING REPLAC[MtNT OF Viki! CAL SHAF) COUPLING AS IDENTIFIED IN LER 78-39/

PIPLS,IITTINGS 021605 30-DAY L.

THE DIESEL 1RIPPE D ON HIGH CRAriKCASE PRESSURE.

SINCE THE R F CUNDAt:1 D tiSS THAN 4 INCHES IESLL GtHERATOR, DF-X-1A LJ AS OPL R A B L E. IHLRE WA3 NO EFFECT 0 ?I THE HLALI

~ OL SIGN /f ftBRIC All0N tRROR H AND SAFEIY OF THE PUBLIC.

f1AhulACIURING fAlktANKS flJRSE PARTIALLY PLUGGLD ORIFICE PLATE TO CRANFCASE VACUUM EJECTOR RESULTING IN klLUCfD CRANKCASE VACUUM WHICH HAD BLEN h0!ED ON THE DILSEL PRIOR 10 TR IP.

RESTRICTION RLl10VE D AND DF-X-lB RL PUN 10 VERIFY NCKMAI CRAh4 CASE VA CUUM AT FULL LOAD AND AT SYNCHRONOUS SPLED.

PERIODIC CHECKS WILL CE FLR FORMED.

I CD N

FI A Y 18, 1979 LLR DUTPUT ON EVLNTS AT THREE Mite ISLAND 2 PAGE 12 FROM 1969 10 THE fliLSEH f OUTPUT SORIED BY FACILITY AND LVENT DATE N

F A CI t 11Y/SY S I E ft/

0 0 iip L h t N I / C CtWON E N T SUBCbDE/

DOCKET NO./ IVENT DAT[/

N CAUSt/CAUSf SUBCODE/

(LR NO./

REPORT DATE/

EVENT DESCRIPi!ON/

C U';PLf4E N T ti ANUF ACI URE R CONIEOL h0. RLPORT TYPE CAUSE LLSCRIPI!GH InPLE f1! L E ISLAND-2 05000320 060978 FLOOR FIRE BARR!tR PLNEIRATICH SEAL BETWEEN REL AY R001 AND CON!ROL ROOM flRE P00lLJTION $15 + CONT 78-043/03L-0 071078 DEFICIENT VIOLATING I.5.

3.7.11 NO CONDIllON EXISTED WHICH Riqu!Rf D TH C O!:PUNE N T CODE NOT APPL IC ABL E 021950 30-DAY E OPERABILITY OF THE FIRE SLAL.

NO 1:tRL AT 10.HLALTH AND SAFETY OF PUBLI Sh5C0ff0NENI rwi APPL IC ABL E C.

DESIGN / FABRICATION [kROR C0tiSILUCTION/INSI AlL ATION IllM hJi APPLICABLE IMPROPERLY CURED FOAM MATERI AL WAS USE D 10 M AKE THE SEAL.

CONIINUQUS F!

RE WATCH WAS POST [D.

I;E F I C I E N T BARRIER RLP AIRED AND kl1URNED 10 tuNCTIO NAL STATUS.

IHRLC M11E ISLAND-2 05000320 063078 IN MODE 6, 6/29/18, AT t430 A DIfSLL GENERA 101 PLACED IN EMIRGENCY STAN tih K G CE Nf R A10.< SYS + CONTROLS 78-044/03L-0 072478 DBY.

6/30/78 At 1600. LISCOVERED BREAKLR C2-l i2 NOT CLnSED W!iLN A D.G.

CILCUIT LtOSLRS/INTERRUPILks 021936 30-DAY PLACED IN EMLRGLNCY STANDBY CONST!IUI!NG VIOLATION OF T.S.

3.8.1.2.

UNI C I R C 'J I T EREAKER I IN f100C 6, AND NO CORE Ali[RATICNS CR CHANGES IN REACTIVILTY LdRE f1ADE DtFLCTIVE PkOCEDURLS THUS EVENT DID NOT EffLCi HLAllH AND SAFEIY OF PUBLIC.

NOI APPLICABtf Ili n f.U T Al'P L I C A B L E P:20CEDURE INACLQUACY.

PROCEDURE REVISED 10 I NSURE C2-lE 2 CL OSf D UttE N A DILSLt GENtRATOR IS PLACfD IN LMIEGINCY S T A iif.B Y. APPROPRI AIL PIRSuriNil WILL EE INSikUCIED CN PROCEDUiit CHANal.

IPN il f11 L E ISLAND-2 05000320 072478 DURING A FIRE BARRILR PENETRAilGN SEAL YERIFICAllDN INSPECilG:1 A UALL P fikL ITOIICIION SYS

• CONT 5-048/03L-0 082278 ENElRAI!ON WAS 10UND L ACKING A SIRE BARRIER SEAL.

THIS 12" X 6* PINEIRA C MPO:.i tt i COLL NOT APPLICABLE 0220S2 30-DAY TION 15 L OC AT E D IN THE SOU1H W4tt 0F T ilt SulICHGEAR R G 0t1 IN THE A [ t:L h.E Sim C CCP ON E N I NOT APPLICABLE NCY DIESEL CLNEPAIOR bu?tDING.

SINCE lHIS fikE BAkRILR WAS HON IUNCIICN D! SILN/F ABi(IC A T ION EkRCR AL, IT CONSTITUIt$ A VIOLATICH OF ILCH SPEC 3.1.11.

C0t:SIPUC r10H/I'4Si AL L All0N IILM NOT APPLICABLE LACK OF A FIRE BARRIER SEAL IN IHIS PENEiktTION WAS DUE TO AN OVERSICHT ON IHE PARI 0F THE CONTRACTOR.

A CCNTINUOLS FIRE WATCH W AS EST ABL ISut D Id ACCORDANCE W!iH ltCH SPLC 3.7.11 PRICR 10 INSIALLING THE SEAL A:eD SUB SLQULNILY A F1kt BAkRIER SEAL WtS INSTALLED ISING ANI APPROVLD flATERIAL.

1Gil MILF ISLAND-2 C5000320 081278 DURING Pf RF0kMr,NCE OF 1HE REACf0R BUILDING PfkSONNEL AIRLOCK LEAK RATE I C N i t4MH 1 ISOLA 110N SYS + CONT 78-050/01T-0 082878 ESTING. THE OVlP At t AIRLOCK LEAKAGE RATE IXCEEDED THAT AttCWED IN IFE UN VLS$tLS.PFLSSUPE il 22 38 9 2-WEEK IT'S ILCHNICAL SPLCIFICAIIUNS.

A t il10 0 GH TiiE UNIT WAS IN FO L L 5 AT IHL T CONIAINMLNT/ORTHELL IME OF THIS TEST. II H AD INILRED F10 DES 1 THROUGH 4 SINCE 1HE PRECE DIN t

~ L,ISION/FALRICATION [RROR EAK RATE TESIS WERE PERF0kHLD IN DLClfiB E R, 1977. AND THUS CON 0TITUlts A CONSIRUC110N/ INSTALLATION VIOLATION OF itch. SPEC.

3.6.1.5.B.

IILM N3T APPLICABil LLAKAGE WAS CAUSED BY A 1/4" HOL E ORIL L E D T HROULN THE AIRLOCK BUl>HfAD D URING INSTALLAi!ON OF SUPPORTS FOR THE LLECIRICAL CABLING.

A t;0 Lit !C AII ON HAS BEEN P1 A D E 10 PLUG THE HOLE.

1HE AIRLOCK UILL IHLN DE ILSilD AND VLRIFILD AS SATISFACTORY PRIUR 10 ENTRY INTO MODE 4.

7

==--

O C'sJ N

11 A Y 18 1(19 LER CUIPUT ON LVLHIS AT 1HREF MILE ISLAND 2 PAGE 13 F F Gi1 1569 lu 1HE PRLSENT

)

OUf f UT 50RILD Sf FACILITY AND LVENT DATE F AC !! !'. Y/5YSIL M/

C Gf n C:.l N T / C U:W GN L N I SUBCOCE/

00CK L T

• .a./ LVENT DATE/

CAULf/CAULE 50BCODE/

ttR

s.'

REPORI DAIE/

EVfNT DESCRIPTION /

CUMPL5 it.IUPACI"RER Ce.. l k O L N3. RLPCRT TYPE CAUSL LL5CRIPIIQN 1HRet liit t ISLAND-2 05000511 082478 WHILE THE UNIT'S A/E WAS CCNDUCTING A REVILW OF C ABL E SPL ICE 5 MACf IN51D 5YS kt 4RD F CR 5AFE IDOWN 78-051/011 1 091978 E C0til A INME N T. II WAS DISCOVERED THAT CLRIAIN SAFETY RELAftD VALVL5 DID V AL Vr 5 022390 2-WLEK h0T HAVE CABLE SPLICES. AS I ti; 8 T E D IN THE IMI-2 FSAR. BUT WERE INSIEAD U li.L P CONNLCTED TO 1ERMINAL ELOCKS AS INI11 AL L Y INLI At t ED.

Pi tM NN t t ERROR CsNIRACT. 4 CONSULT. PERSONNLL ITLM N9T AFPLICABLE C ABL L5 OVf RLOCKE D BY A/E WHEN MODIFICATIONS PERFCEMED.

CABIES RLQUIRING SPLICING IDENTIFIED.

THOSE RLQUlkED F OR PLATUP SPLICED AND F11tlD WITH NEAT SHRINK IUBING PRICR IO itE A TUP.

RUtAINLtR RL4UIRING SPLICIh4 AND H EAT SHRINKING ACCOMPL I5HE D PRIOR TO CRITICALITY.

ThRil MILE ISLAND-2 05000320 082878 ON AUGUST 28. 1978. IT WAS DETEFMINED BY THE UNII's A/E THAT IHE MAIN Si MilN SilAM SY$itM5 + CONTROLS 78-052/01T-0 091178 EAM LINES WOulD BE INCAPABLE CF WI T H5 f Af: DING A ibRBINE TRIP F F C;1 10 0 % P U PIPL5.filflhGS 022388 2-WtEK ULR.

SINCE THL POGER LEVEL NLVER EXCEEDID 30% AND 1HE A/E'S ANALYSIS SH ib INCHL5 AND LARGER OufD THAT THE MAIN STEAM LINES CoutD WITH5fAND A TURBINE 1 RIP AT 301 POW LE SIC:l/F ABRIC AIION EkROR LR, THE HEALTH AND S Af tIY Of THE PULLIC WAS NJi AFILCIED.

LfSIGN 11 Lf1 tiO T APPLICABLE THE PREVIOU5LY INSTALLED MAIN STEAM RESTRAINTS WERE NOT CAPAPst OF SUF PR ESSING CLD5URL OF THE TURBINE STOP VALVES WITHIN A 50 M!tLISECOND II.MC F R AJit AT 100% PCWER.

PROPERTY SIZED RE5IRAINIS HA'.; BEEN 1h51ALLLD.

lHNi t F1I t 1 ISLAND-2 05000320 08397o IN MODE 3.

DURING MAINTENANCE WOkK ON R(MOTE $ H U I D014N IN51RUMENTAi!CN LI sal [iY REL A TL D D15PL AY INSTR 78-057/03L-0 092978 SPLAY PATCH PANEL. PANLL PCULR SUPPLY Ih ADVIRTL NILY CRGUNCI D C AU5!NG L OS CLMFONINT CODL NOT APPL ICABL E 022651 30-DAY 5 OF DISPLAf INSIRUMENTAi!0N RLGulkt D BY 1.5.

3.3.3.5.

ALi Po!N'$ CCULD su;CC:irONINT NOT APPLICABLE HEvE BEEN kEAD AT PATCHC0ARD USING EVM.

PECAUSE UNII S b U I LO:.P AND LC5 PLK50hNtl LRFOR Y INSTRLMLNTAilON NOT NLEDED Ai fHE 11Mt. EVENT CID NOT LhD AN Gt.. HEALId MtINitNahCE 4 ktPA!R PERSONNEL AND SAFETY OF THL PUBLIC.

1lLM Nui AFPLICABLE PERSONNEL PERFOR11NG MAINTEN ANCE WORK INALVERTENTLY CROUNCE D Pt.JE R SUPPL Y 10 RfM0it ShuYDCWN PATCH PANEL ]NSIRUMLHIATION RESULTING IN DAMiGt IQ CIRCUIT BREAKtR IN VITAL SufPLY 2-SV.

CCRRECTIVE ACilON WAS ELFLACIMLNT Of DAMAGED circuli ERFAAER.

ThRL C Mil E 15 LAND-2 05000320 083178 W:ll t L IN M3DE 3.

AND COGL ING COWN AFTER MAIN SIEAM PELIEF YALVE TE511NG.

(NatikD SAFETY FLAIR INSTR SYS 74-053/03L-0 092678 LAFLIY INJECIIUM CHANNLL C DID NOT TRIP WHEN PRES 5URE WAS RLLUC5.D BELO4 1:451PhMENT AllCN

• CCHIROLS 022331 30-DAY THE 1640 PSI SETPOINT. AS REQUIRED BY I.S.

3.3.2.

R E DU N D Ali! CHANNELS A OlHiR AND B I UNC T IONI D PRbPE RL Y.

IntRLIORE. THIS LVENT P05tD N0 ThAEA1 TO TH

-~ C C '.i LN E N T PAILURE E HEALTH AND SAFETY OF THE PUBLIC.

tilCTRONIC B AIL LY MEIER CCMPANY FAILURE OF THE BI-STABLE (BAILY PART N0. 6631500) A550CI AIE D WITH S Af E TY INJLCTION CHANNEL C.

UPCN DISCOVLRY CHANNEL C WAS FUNUAILY 1R]PP[D AS RLCUIRED BY T.S.

3 3.2.

THE I AUL TY B1-$1 AblE WAS REPL ACLD AND CH Ahhlt C REIURNED 10 OPLRABLE STA105.

7

CD NAY 18.

1979 LER CUTPUT CH LV[NTS AT THREE MILE 15LANO 2 PAJE 14 EkCM 1969 10 THE PRESENT b

f *4C I L li Y/LYSI Ell /

C UitPohl fil/C 0MPOW NT SUBCODE/

DOCFET NO./ EVENT DATE/

Q C A U G E / C t.U S E S U B C 01'E /

LLR t.0. /

REPORT DATE/

EVENT CEStk!PTIOH/

CDIVONLNI MAhUfACTUREC CDHIROL N0. REPORI IYPE CAUSE DLSCRIPTION F

limit HIL E

L AtlD-2 05000320 090778 WHIL E IN MODE 5, CURING COMPLETION OF A CHANrE MODIFICATION CN CONTAIN.

C H I ht :h i ISOLATION SYS

• CONI 78-054/031-0 092778 150 V AL VE DE T E RMINL D TH AI UCL V 271 HAD NOT I> E L N SUPPLILD W!iti CONIAlbME VALVES 0223E6 30-DAY NT GRADE LIMIT $WIICHES. T0 ROUE 5WIICH AND N010d.

SECAUSE THE R L LU'I C 'i f O II'[ R 150LAIRON VALVL WAS OPERABLL. THE HLAllH AND SAFETY OF IHE PULLIC WSS M P [ d L O N rit t [kROR OT [NDANGLNED.

CONIF4CT. & CCH5 ULT. PERSOHNEL 11 Lit NOT APPLICALLL PURCH ASING E RROR 2( UN!i A/E.

HON-CONTAlbMENT GRADE COMPONEN15 USED CH OPtWATCR OF WL,L V 271.

COMPONENTS REPLACED WITH CONTAINf1FNT CPAGE AND V AlVE R[5i0klD GPERABLE.

ALL UihlR SAFLTY kilAILD. MOTGR-LPERATED VALVES int!DE CONIAlH. BLING INSPECTE D.

IllRt l hlL E ILLAND-2 05000320 090378 IN MODE 5 DURING MONTHtY PL AC TOR BUILOING ISOLAi!CH AND COOLING FUNCTION CNitMNT lt0LATION SYS + CONT 78-058/03L-0 10041E AL ILSTING. CCHI AINitE N T 150LATICH V AL VE L:EDL -Vild T AILE D 10 CLOSE ON IM Vt.LVE1 022335 30-DAY NUAL IN111ATIDH TEST SIGNAL. VALVE DID CLOSE ON SUB5EQUENT A010 ACIUATIO Oldr a H LOGIC TESI SIGNAL AND SUESECUlHT MANUAL INITIATICH TEST SIGNALS. NO IH U ilit R RLAI 10 PUBLIC H[ALTH AND $4fEIY.

thii APPLICABLE Il tl1 tiO T AFPLICABLE BtCAUSE FAILURE OF L?DL-V1125 TO CLOSE COUL D NOT BE REPEATED ON SUBSECUEN i MANUAL OR AUIO ACluAi!ON 1[51 SIGNALS BELILVE IHIS LVfMI C A U L E D f> f DlR TY CONIROL RELAY CONTACT. Af f ECILD REL AY CCHI ACI CLEANLD A $ A PF LC A U110:4 ARY MtASURE.

ThREE MILE ISLANU-2 05000320 090218 INVE5!! GATING COMPLIANCE WITH IE CIRCULAR 78-08. FOUND ORIGIN AL E0LifD C Cla i hr:4 I ISOLATION SYS + CONT 78-059/03L-0 100278 ONNECI!ONS ON CONIAthMLHT !$ULAll0N VALVES MU-V2A/B NOT TAFED IN ACCCEDA VALVL OPERATOPS 023076 30-DAY NCE WITH EhVIRONMIH T AL L Y QU AL IF IE D MEiliODS.

SINCE EQUIPMtNT HAD H3T FAI LLICIRIC M010R - AC LLD. AND h0 SIIUA110N OCCURRED 1,HICM COUL D H AVE PRODUCED ADVERSE L h v! F C:4 PLLSONNEL LAROR NENIAL CONDITION NECESSARY 10 CAUSE COMP 0htNIS 10 FAIL. h0 DAt.GER 10 PUB CuMIRACT. & CON 0 ULT. PERSONNEL LIC HLALIH AND SAFLIY.

IILM UOT AFPLICAELE PERSONNEL EkRC' DURING CONSTRUC1 ION ALLOWED TAPING OF BOLTED CCN6fECT10NS IH NON-ENVIRONMENI AL L Y QUAL IFIED MANhf R.

M010R LEADS WEFE PUTI SPLIELD TO IIEL D WIRING AND COVERID L111H L NVIR0!!MENI AL L Y QUALIFIED HEAT SHRita IUBIhG.

INVE5flGATICH REVL AL LD NO OIHLR LRRORS OF THIS 11PE, THRI E Mil E 15 LAND-2 05000320 091378 WilI L E IN MODE 5.

DURING PE RF CkMANCE OF SURVEILLANCE 2303-Q5, DeMPIR 409?

AIR COND. NEAT.COUL.VlHi SYSILM

/8-055/03L-0 100578 C (RLCUIRf D 10 BL UPE R ABa t IN NODES 1-4) f AIL ED TO RESP 0ria 10 A CLOSE 5 v4LVL5 022652 30-DAY IGH At.

BECAUSE NO CCNDilloN EXISTED UtliCH kEGUlkED OPERATION OF file CCH BUIILKtLY ikOL R00f1 in[rGLNCY VfHi!LAIION SYSILM. THIS EVENI POSED NO THyLAT 10 TH

- LESIGN/lABRICA110N LRKOR E hEALIH AND SAFETV CF THL PUBLIC.

Cfmi1PUCil0H/INSTALLA1 ION 11Lf1 hui APPLICAbLL DRAWIhG NI51NIERPRETATION RESULIL D IN INPROPER ORIENTATICH OF CERIAIN C0 MPONLHIS IH INSIRUMLHi AIR TUBING.

THIS CON 5IRUCTION PROSLIM CMPLCIL D.

ALL AIR-OPfli AILD D Af WE RS IN CGd1FDL k00M LMLRGENCY AIR H ANDL ING $ r 51(;1 INSPECILD.

ALL OPERABLE.

RLvitW OF AIR HAhLLING SYSTLM LLSICN FJUND tiO OlhlR PROBLEll5.

CD N

TN Il%Y la, 1979 LER OUTPUI OH EVEN15 AT THREE MILE ISLAND 2 PACE 15 T

fkOM 1969 TO THE PRESENI OUIPUT 50RIED BY FACILIlY AND LVENT 9 ATE IACItI1Y/5YSitM/

COMPONENT /CCMPONENT Su it,0DE/

00CKET NO./ LVINT DATE/

CAUSF/CAUSE S ul!C O D L /

LER h0./

REPORI DAIE/

EVENT DtSCRIPI!ON/

CO:*i CNLNI MAhUF ACT UWE R CCHIROL h0. REPORT TYPE CAUSE LL5CRIPTION ILPEE MILE ISLAND-2 05000320 091578 PERf0* MING SUkVEILLANCE PROCEDUEE 2303-N21 DISCOVERED TRIP SEIFIONT RX d LNCNRD SAFETY FEAIR INSTR SYS 78-060/03L-0 101378 LDG PkE55UWE SWI1CH WAS 3.61 P21G V5. AllCUABLE EEIPOINI 0F 3. f,0 PSIG AS CIRCUIT Ct0LlR5/INTLkRUPIER5 022653 30-DAY 6EQ BY T.S.

3.3.2.5 ACTICH STATEMENT to Of TABLE 3.3-3 0F i.5.

3.3.2.1 SUITUiOLAR COMPLIED 14ITH 51HCE CHAhNEL MAS TRIPPLD 10 PLRf0PM $UkVEILLAhCE nD Li f UthiR ERMIHL SEIPQ1HI.

IWO kEDUNLAHI CHANNtLS WthE AVAILABLE AND WlIHIH ALLLW hai APPLICABLE ABLE TRIP LLIPOINT. THUS EVLHT DID HOI AffLCf THE HEALTH AND 5AtEIY OF T Illii f.01 APPLICABLE HE PUBLIC.

E.5 - P S - 3 9 5 7 APPEARS TO HAVE EACEEDLD THE ALLOWABLE LIMITS BECAUSE DF SEIP OINT DRIFT.

Itt!S PRES 5URE SuliCH WAS $UESEQUENILY RECALIEFAi!D 10 WITHI N 1HE At t CWABL E LIMIT S AND 115 CURR L5PONLING CH ANNEL REIUkhtD 10 Stkv1CL

!!W L t MIL E ISLAND-2 05000320 100378 F ERF0kHING PSEUDO LROPPLD F0D lEST. IP ES0/31 DISCOVERED NUClfiR ObErPO k i ?.C T O R 1 R IP 5YS IIl15 78-061/03t-0 110178 WER 1 RIP SEIPOINI NOT VERIFitD WITHIN 8 00URS PRIOR TO UsthG tFLCIAt TLS COSON[HT COLL hui APPLICABLE 023079 30-DAY I EXCIPTION 3.10.5 0F THL TECH SPEC AS RL;UIRED.

SINCE TRIP SLIPnfNTS U S U L C C:iPON E H i NOT APPLICALLE ERE VLRIFILD BiLON 50%. NO EffLCI GN IUBLIC HEALTH AND SAFEIV.

fv0CELUR CLILCllVE PROCELURES E 10 BE MODIFILD.

NUT APPLICABLE IT1ft f;01 APPLICABLE PkOCEDURE FOR PSEUDO kOD DROP IEST NOT DIRfCT P E R S O N N l TO I MP l [ t!Un i T.5 3/4 10.1 PRIOR TO PERIOkMING TL5ii GNLY INf CM.LD T h d1 1 PLY UlRE USING SPECIAL TEST EXCEPTION SEC11Ch.

ILST!NG SU5tFNDED AND NUCLEAR UV L k P C:lC 3 1 RIP SEIP0lN15 VEPIFIED WITh!N ALLGUA.tE LIMITS.

NUCLEAR HEAT FLUX A:<D NUCLEAR ENTHAtPY RISE HOT CHANNtt iACT'R$ 04.

Ib

.t HILL 15LAhD-2 050003?O 101478 IN I'.C D E 2 CONTROL F0D DRIVE ik!P BREAKER. WLRE CLOS [D W!iH ONLf ONE SOUR k t ?. C 6 0 W IRIP 5YSILNS 73-066/03L-0 111578 CE PANGE DEILCTUR OPERABLE VIULATIt43 T.S. 3. 3. 8.1 ITEM 11A LJIICH FLQUtaE INSI F U:iENI ATION + C0lliROLS 023083 30-DAY 5 IUD SOURCE RANCE DE1ECTCRS OPERABLE.

ON 10/29 AND 11/4 U11I thTEalD N Pdulk SUPPLY ODL 3 7 ND Cf:D LR E A k ERS L.L Nr. CL 0$L D HIIH CNE SOURCE RANCE DCTICIOR OPEP58 C O.tv0N E N T FAILURE LE.

IN ALL CA5LS BOTH SCURCE R AhGE CHANNEL 5 WEkE MADE OPLk A BL E F RICR lu EllCTRONIC LSCALATING 10 NUDE 2.

LAILLY GLIER CGI.PANY IN0iERABLE routk SUPPLY FOR ONE SOURCE RANGE CHANNEL.

ALTERNATE POWLR S UPPLY OBIAINED FR0ri IMI-1 SATISFYING Wivul"tHtNIS of T.S.

5.3.1.1 LN LAC H CF illE V10'.ti!ONS ULHI!OhLD ALOVE.

THE ALIERNATE P.S.

h t t:0 /I D IN NoLE I AND f:ETUdt D 10 INI-1 AT All IINES DURING STARTUP AND 00MLR OPLAAi!

ON RLGUIRLMEN15 0F LCO 3.3.1.1 WLRE MET.

iHNLL MILE 15L At40-2 05000320 101978 PLRIORHING SURVEILLANCE PkOCEDURE 2301-3D1 04 10/19/78 Lfi[F llt<l D THAT L EttC COOL PEL5 BCbH LEAK. DEffC 78-062/011-0 110178 CO ACIIDH B FOR TLCH SPEC 3.4.6.2 NOT INVOKLD WhtM SURvLIL t 4Ci PFCCECUR CGMfLhENT CUDE d )T APPLICASLE 023080 2-ulLK E 2301-3DI CATA DETAINLD *T 1935 CH 19/16/ 75 5H0aCD UNIDiN T It t f D L f A K ACE SUCCG:TCriiHT NOT A P P L I C A ll L E CI: EATER THAN 1 CPM (2.h GPM ACIUAL).

All LEAKAGL FRCN ECS IS PKOCE5sEb

~~

l'[ R 5 0 h N L L EkkCR ThROUGd FALWASIL IREAIMLNI SYSTEl1 AMD [VENI DIO NOT Atf ECT f usLIC HL Ati llCENSED 4 SENIOR OPLRATORS H ANL SAFLTY.

IILM NOT AF PL IC A BL E N!51HIERPREIATION OF T.S. 3.4.6.2 AND 4.4.6.2 LtD TO PLRf0PM1NCE t R[ Cut a CY fnN SURVIILLANCE AB0st THAT W1QUltED BY IHL i.5.

hof CLLAR TO P t e' N Hit WHICH SET OF DtTA CAME UllHIN I.S.

REGUIRI NiHT AND Wih N I I.E kitulRC NEHIS OF ACTIOd STAllMENT WERE A F P L I C AI'.l t. L.HILLMIIFIED L E AF ALL Sub5EQU LNTLY ELLUCLD TO ALLOWABLL.

Y CD N

N.

C EAY 18, 1919 LER OUTPUT ON EVENTS AI THREE PlLE !$ LAND 2 PAGE 16 InoM 1969 TO THE PRESENT GUTPUI SCkiED Br FACILITY AND EVENT CATE f A CIL I TY/ SYSit it' C ZPLhiHI/C0hP0atNI SUSCODE/

00CKET ho./ EVENT DATE/

CAU5E/CAUSL SUFCOCL/

LIR 60./

RlPORT DATF/

EVENT DESCRIPTICN/

C Gl'.i G h t H I MANUtACIURER UNik0t H0. REPORT TYPE CAUSE DESCRIrTIGH TH :E E MILE !$ LAND-2 e3000320 102976 DURING h0RMAL REACTOR SHUTDGWN RATCHEI 1 RIP OF GROUP 5 CONTRut R30$ OCCU F.L A C T I V! 4 Y CChl F OL S Y S T Et15 78-063/03L-0 112878 kRt D Al 100% WITHORAWN PLSITION.

TRIP OCCUiiRLD WHEN GROUP S ttaTICN WAS CONfROL ECD ERIVE MECHANISMS 0230A1 30-DAY SIARIED 3Y GROUP 6-7 AT 2% INifRLOCK.

PLUER LEVEL LESS Ilt A N 1.0 L-S /M sui,C ChP GHE N I NOI APPL IC ABL E PS Ai THE IIME OF THE TRIP.

AFTER THE RATCHET TRIP. ThRLE n005 IN C 0]P DESIGN / FABRICATION tRROR S WEieE SIUCK Ai ILE S S. WITHORAWN POSITIGH.

THE S2 RODS wig FRLID

.i! L E CGN5IRUCTION/IhSTALLATION f it t REACIOR WAS IN M3DE 3, BY ExfRCISING THE RODS INDIVIDUALLY P' 4 VIND DIAN0t.D PCWER SPECIALTY CORP.

OR FECGMMENDATION.

VENCOR-SUPPL IE D FIELD CH ANGE DESIGNED TO FEDUCE PROB ABILITY RATCHET T RIPS HAS INCCkRLCILY INSTALLED IN INNE GAIE 0 RIVE MOLOLE

( C riE Ih 6? CUP 5.

AND TWO IN AUXILIARY SUPPLY).

FILLD CHANGE WAS CORRECTED; SULSEQULH TLY. IMPROVED CATE LRIVE CIkCUITS WLWL INSIALLED.

Ihkit MIL E ISLAND-2 05000320 110778 IN MODE 3.

DURING A CALIBRATION CHECF Of THE BWST LEVEL Silli C H L S. THE SW OllH R ENChRD S AF ETY FL AIR SYS 78-064/03L-0 120478 ITCilES WERE FOUND 10 EXCEED THE V ALUE At t 0WED BY SJCTION 3.3.2.1 Of Iht IhS T6 L.it HT A TION + CONTROLS 023082 30-DAY TLCH SPEC.

ACTUAL BUST LEVEL D!D NOT EXCEED f.S.

LIMITS.

BECAUSE BOTH S L NSGW/DEIE CIGR/E t Li:LNi SWITCHES HAD 1 RIPPED (THE ( WS[RVATIVE CONDITION). THIS EV(NT LID h3i PR O ill L R OLUCE AN ADVER5L ftFECT OH 1.T HEALTH AND SAFCIY OF THE PUBLIC.

hol APPLICABLE IIIM UOT APPLICABLE THIS LVENT WAS CAUSED BY THL BUST L EVEL SWITCHES BEING OUT CF CALIBRATIO N.

THE SWITCHES WLRE CALIl#ATED AND RETOLNED TO SERVICE.

lHi t E MIL E ISLAND-2 05000320 111278 IN N0DE S CURING LOAD SERVICE TESitNG OF BA11ERY CHARGERS FUSES BIEW IN tic CNS!!E POWiR SYS + CONTRALS 78-067/u3L-0 121173 CHAkcEwS 2-2A EtiD 2-2B RLSUtTING IN LOSS OF BATIERY CHARGER FOR THE P-l'N BATTtRIES + CH UCLR$

023084 30-DAY SECTIGN OF EATTERY BANK 2.5B WHIf H VICLATES TECH. SPEC.

3.8.2.3.

A KID SU6CuTONENT NOT APPLICABLE UNDANT SET OF BATTERY CHAkCERS Ahb IULLY CHARGED BATTERIES utRE AVAIL ABL C CI.r C Ni H I iAILURL E AND THIS EVENT DID N3I AFFECT PUBLIC HEALTH AhD SAFEiY.

LLtCIAICAt LXIDE INLu!1 RIAL DIV A GATING FILTER MODULE IN EACH BATTERY CHARGER WAS DEFECTIVE. EXICE BAT TERY CHARGER MODEL NO. UPC 130-3-400; CallhG AND FILIER MODULE NJ.

tot 0 71 629.

DEFECilbC MODut tS UlkE REPLACED AND Nfu FUSES INSTALLED.

POTH CHARGERS WERE RLLNLkGIZLD AND SCR F IRING tRDULES ADJUSTE D FGR EACH CHAEG 1R TO ASSURE CU6 fi EN T BALANCE.

TH4LL MILE ISL AND-2 05000320 11tS78 IN MubE 5 PERIORING SURVEILLANCE PEGCELURL 2502-RI6. IT WAS FOUND 12 CIE latxG CLNLRATOR SYS + CONTROLS 78-063/0!L-0 121373 SEL GLHLRATOR LOAD SEQUEHCE IIMERS' SEIPOINIS UfkE CUISIDE THE TuliRANCL atlet$

023C85 30-DAY S SPECIFIED IH TLCH.

Sr f C.

T ABL E 4.8-2.

SINCE THE SEIPCINT b A f< ! A riC E S UL a

T Ilh. LELAY. PNEUMATIC RE NOI SIGHIFICAHILY GRLAffR TH2N ALLOWtD. DILSLt GENERAILR L L A D t Hs pr:HL

~ CIHIR D NOT HAVE BEL N ADVERSELY AFFECILD AhD IHIS LVLHI COULD h0T HATE AffLCil NJT APPLICABLt D ThE HLALTH AND SAFETY OF THE PUBLIC.

AGASIAT FLL AY C0.

TOLfLANCE LIMITS FOR THESE SEIPOINIS ARE VERY CL150 AND SETPGINT LPIFT M A '. HAVE CAU$tD TIMCRS TO LxCLLD T.S.

10LfRahCE.

AFFECILD TIMLKS ULPL Ill MEDIA ELY C ALIBR AILD 10 TuttkANCE SPECIf lLD IN T.S.

TABLE 4.8-2.

IUTURL C0kno 'IVE ACTION IS PkESENILY BCIhG INVLSTIGATED.

~~

M CD N

s b

(1AY 13.

1919 LER OUTPUT CH I V f *t !) AT THREE MIL E ISLAND 2 PAGE 17 Q

FRoa 1969 TO THE i-R E S E N T CuiPUI $041LD BY FACILITY AhD EVEt3T 0 ATE fACitITY/ SYSTEM /

C O. iP O N E N T / C 0i tP ON t N T SUBLOLL/

DOCKET h0./ EVlHI DATE/

C At>5 E e C wS C SufiCE E /

LER NO./

RIPOWI LATE /

EVENT DESCRIPi!CN/

C om U:sLNi MAhutACIUAER CONTROL h0. REPORT 11PE CAUSE D L 5 C h ! P I I ' ia J

THRLE MILE ISLAND-2 05000320 120l78 IN r:ObE 3 if f ATUP PROCE LURL 2102-1 t WAS BEING PERFORMED I;HICH REQUIRED C 01h2 INST 515 F I G D F O R SAFETY 78-070/03L-0 122878 LCSING OF CRD BRft.KFRS.

AFi[R bEEAKEPS WERL CLO5FD DETEkMlHLD thAT INIE C Ci v 0::E S T CODE Nai APPLICABLE 023426 30-DAY FMLDIAIL RaHGE *<[UlkON FLUX AND RAIE tDNCIIONAL SURVEILLANCE (2313-5U2)

T U CCull?Olet N T NOT APPLICABLE WAS hof PE R F 0FriL D AS RtGU1 RED By I.S.

4.3.1.E.1.

INSTRuhi NI A110t4 UAS PR LEFECIIVE P R UC f E".M E S OVEN 10 BE fuSCIIONAL AND EVENI DID N3T AFFECT PUBLIC htALTH A:3D SAf[iY.

HUT AfFLICAM E lit" 23 APPLICABLE WHIL E CT;ME NCING UNIT HE A T UP THE REQUIPEMENT IN 2102-1.8 TO IN30PE THAT 25t3-50 2 Bt CUMPLETED WAS INADJ[RIANTLY MISSfD.

UPON DE((RMINAJ]CN Of 1HIS RLQUIREMENT 2 5 t 3-SU 2 WAS P E RI CkMED I;L1EDIATELY WITH S4ll5fACTORf RESULis. PROCLDURE 2102-1.1 WILL 20 kEVISED IO PREVENT RECUPRINCE.

1HREE MIL E 15LANS-2 05000300 120278 WHIL E IN NODE 1 ON DECEMblR 2.

1978, WHILE Su!ICHINO FROM IHF STARIUP TO MAlti Siti,M SYhifMS

• CONTROLS 78-069/99X-0 022879 THE MAIN FELDUAIER REGULATING VALVES. A RtACIOR TRIP UCCURRL D FOL L CUED VALVES 023S43 OTHER By SAFETY INJECil0N ACTUAi!Grl CUE TO OVEdFELDING IHL STEAM GENERATURS.

CATE SINCE SAFLIY FLAIURE SYSTEMS FUNCTIOfifD AS DESIGNED. THIS EVENI DID NOT DiffCTIVE PROCfDURES AFFECT IHE HEALTH AND SAFETY OF THE PUBLIC.

tm l APPL IC A bl E I T Eli h]I APPLICABLE THIS EVENT OCCUkRED E,UE TO THE MAIN FEfCWAlfR REGULATING VALVE B EING PI'4 NED GPEN.

P90Cf0URLS HAbE BLEN REVISED TO PRECLUCE R E OC CU R R Lh'C E S.

IM(E HllE ISLAND-2 05000320 120878 ON DECEMBER 8, 1978, II W4' titAMINED THAT THE CONikOL LCCIC FOR THE MA REAC CO3L CLEANUP SYS

• CONT 78-97t/Oti-0 122178 NE-UP (HPI) PUMPS ALLOWED PUMPS 10 LIART ON A SINGLE DIESEL CLNEWAIO P Urk s 023428 2-WEEK R DURING LOSS OF OFFSITE PD.

WIIH0ui (SF ACTUATION.

SINCE AEhiNILIRAT UihER IVE COHikOLS WikE It'ME DI A T E L APPLIED THLkE WAS NO EFFECT GN THE HLALTH LE S I Cri/ F A E>R I C A T ION ERROR AND SAFETY OF THE PUBLIC.

EtSICH litd NJi APPLICABLE A DESIGN DEFICILNCY IN THE CENTROL LOGIC WHICN COUL D H AVE AL L OPED THE ST ARTING OF IW3 MAKEUP P UW S F R Ci1 A SINGL E DI[tEL GENERATOR tJ AS CovdECTED.

IHL DLSIGN J10DIFIC ATION REVISE D CONTROL CIRCUIIS TO PREVLNI T H I S i k C.1 OCCUkRING.

IMIE NIL E ISLAND-2 05000320 128378 FIRFORNING SURVEILLANCE PROCEDURE 2303-t435, CCNTAINMENT 150LATICN VAtVf5 C h i hi dii ISOLATION SYS

• CONT 78-072/03L-0 010279 RR-V2A. kR-V28. CF-Vt44 AND SV-V54 F

• I' E D TO CLOSE ON A V I U;; A T I C AC'UATI h tL A (5 023429 33-DAY ON TEST SIGNAL.

THIS IS A V I O L A T I 0 tt OF T.S.

3.3.2.1 UHICH FECUIRES TUJ C O N i e:0L, CENERAL PURPOSE MINIMUM OPlRABLE CHANhILS IN MuDES 1 ThR'adCH 4.

F I Df)NE

• VALVtS ULLt 0 r

~ CC:#GhlHT FAILUkE PfRABLE FOR IHE AF6LCTED PENLIRATIONS; IHUS NO EFFECT 0: FUBLIC htAlid A iLtH;.nICAL ND SAFLTY.

SMIIH.

A.

O.

THE AE0VE LISIED VALVES DID NOT RECEIVE THE TEST SIGNAL BlCAUSE ACIUATIQ N LOGIC RELAY 6321E/9814 UA5 Ih0P[R A BL E.

RLLAY WAS DIS AS$103 L E D C L E Ah L D AND AL IChED.

SEVERAL MAHHAL AhD LLECTRICAL UPI R AT IONS L!lF L T h t.4 PLPfCR MED SUCCESSFULL(. No FUTURE CORRLCTIVE ACTION 15 CONSIDEs[D hiCESS Ak(.

~_~

D CD N

I N

C MAY IS, 1979 LER DUTPUT ON EVENis AT THRtt MIL E ISLAND 2 PACE 18 FRON 1969 TO THE lkESENT OUTPUT SCRitD BY FACILIT( AhD EVEHT DATE IACitITY/SYSIEN/

C D:w r Nf M T /C CMa'UNf NI SU3 CODE /

DOCKET No./ EvlNT DATE/

CAUSE/CAUSL St.B C O D E /

IFR NO./

REPoki DATE/

EVENT DESCRIPITON/

CClu LNElif fl AriUf AC IURER COMikOL NO. REPORT TiPE C AUSE DESCRIPiloti IHREt MILE ISL At3D-2 05000320 121578 AT 0800 HOURS ON DECEMBER 15, l978. THE AIR PUMP FOR HP-R-227 tJAS FOUND 3RfA MUNI TORING SYST Lf15 73-073/03L-0 011579 10 B L SEIZED. CAUSING HP-R-227 10 B E INGTERAbtE.

SINCE REAC10R BHILDING P UMi> S 023438 30-DAY CRAB SAMPLLS WERE IAKEN LVERY 24 H00PS, AS SPECIFIED BY TECH. SPLC. 3.4 V6HE TYPE

.6.1, THIS EVENI DID NOT AFFLCI IHE HEAllH AND SAFETY Of THL I UBL IC.

DESloh/ FABRICATION LRROR DESILN GAST T1ANUFACTURING CORPORATION WATER IN S AMPL E LINES TO AIR PHMP APPEARS To BE CAUSE OF SE!ZURF.

PUf'P kEPLACED HEAT ? RACING APPLIED TO ?AhPtE LINES AND HP-R-227 AE!uPNED (WER ABLE.

ENGINEERING EVALUATION BY A/E REQUESTED TO DETIFMIHE t'.ETHOD 01 FA EVENIING WAILR IN S AFVL E L INES.

IN THE INTEkIM PERIODIC CHEU.S WILL EE MADL.

THRI E MIL E ISLAND-2 05000370 122878 WHILE IN MODE 1 DURING A PtRIODIC DIfSEL-GENERATOR SURVEILLANCE, D!!SEL AC GNSITE POWER SYS

• CONTRot$

78-074/0it-0 012379 CtNLRATOR DF-X-18 DID h0i SIART THEREBY CAULING THE ACTION SIAIEMLai ASS fit' ILLS 023430 30-DAY CCI ATED WITH T.S.

3.8.1.1 10 BE ENTERED.

BECAUSE NORMAL POWER ut.S AVAIL SUECCMPONENI h0I nPPLICABLE ABLE AND BfCAubE THE OTHER SFAS STRING AND IIS POWER SUPPLY WAS AVAILABL COMONLHT F AIL UR E,

THE EVENI DID NOT AFFECT THE HEALIH AND SAFETY OF THL PUBLIC.

NATURAL lhD Of LIFE tiU G L H T. WM W.

CD EVENT APPARENTLY CAUSED BY A PARTIALLY CLOGGED FUEL OIL FItiER.

THE FIL TER RIPLAC[D AND DF-X-lB DEMONSTRATED OPERABLE IN ACCORDANCI W!iH A C T I 0 re S T A T[taf N T FE QUIRit1E NIS.

IN ADDITION DIESLL GENLRATOR SUkVLILLANCE FREQ UENCY WAS INCkEASED IN ACC0RDANCE WITH 1111 - 2 T.S.

Ihktt Mitt ISLAND-2 05000320 010379 ON 01-03-79 IN MODE 1 DETERMINED SURVEILLANCE PEOCfDURE 2304-W1 LORATED RLACTIVITY COHIROL SYSTEMS 7 9- 0 06/ 0 3L-0 013179 WATLR SOURCE VERIFICATION SCHECULED FOR 01-02-79 HAD NOT BEEN FERIG/MtD.

Cotir0NEN r CODE NOT APPLICABLE 025008 30-DAY THIS IS A VIOLATION OF i S.

4.1.2.9 AND 4.S.4.

SINCE BUST HiS It M DI A StH C or.P0 tie N I hui APPLICABLE TELY CHECKED AND f ouND WITHIN ALLOHAblE lit 11TS. NO EffLCI GN PUBLIC hlAL P t R S 0ruit t tRR0k IH AND SAFETY.

LADIATICH PR0iECTICH PERSONNLL IILM N3T APPL IC ABL E BUSI WAS IMMEDI ATEL Y SAMPL ED AND AN At Y2E D FOR REQUIRED CONCEN1RATIGH I

HSikUCIION OF PEASONNEL ON SURVEILLANCE V(RIFICATION TECHNIQUES HAS IAKL N PLACE TO ASSURL THAT THIS EVLHI 00tS NOT RLCUR.

Ihntf MILL ISLAND-2 05000320 010479 ON 1/4/79 RF VILWING D AI A COL L ECT E D LURING PERf 0RrtANCE Or 230 3-M7 OH 12/1

( HINMI HEAT ktMuV SYS + CONT 7 9 - 0 01/ 0 3 L -0 020179

/78 DtiLRMINED REACIOR BUIL DING FRI SSURE HI-HI CHtNNEL A IUNCTICNAL TEST IN,4kUMLNTATION

• CONTROLS 025004 30-DAY NOT PERf0RMcD VIOLATING I.S.

4.3.2.1.1 SINCE kB PRESSURE ff!-HI C H '.h u E INSICATOR L A FUNCTIONAL IESI Wts PIkf0RMED SA71SFACIORILY UN BOTH 11/10/78 AND 1/

~ P(k50hhEL fFROR S/79 SYSIEN UAS NOT OPERA!!hG IN DECRAL>ED fiODE AND THERE WAS hD LIFLCI O

r. A I H T I N !.N C E 8 KtPAIR PERSONNEL N PUBLIC HEALTH AND $88ETY.

11118 hJT AFPLICABLE A SECTION OF SURVEftLANCE PROCIDURE 230FM/ WAS IN ADVER IE N TL Y ( f?!! !E D B Y TECHNICI AN WHO PERf 0LNLD SURVElt L ANCE ON 12/1/78.

APPiLPRIATE ItC PLES ChMLL WILL BE ADVISED OF THIS LVLNT 10 PRLVtNT A FUTUkE RECUf.RiHCE.

~

I"'=-

O CN 8

h-C MAY 15, 1979 LER OUTPUI ON EVLN!S AT THREE MILE ISLAND 2 PAGE 19 fROM 1969 TO THL PktSENI OUTPUT SGkTED BY FACILIIf AND EVENT DATE FACILliY/SYSTIM/

C 0: # LN E N T / C O. lF 0h E N T SUBCODE/

DOCKFT NO./ EVENT DATE/

CAU5f/CAU5L SU3CODf/

tlR NO./

RfPORT DAIE/

EVENT CISCRIPTICN/

CuniONENT MANUFACIURER CONIROL NO. REPORT TYPE CAUSE DE5CRIPIIQN 1HPLE NILE I S L A N D -- 2 05000320 010579 AT 0957 CONTROL ROD 6-12 CROPPED INTO INE CORE.

ICS IM:tEDI A T EL Y Bk C AN i RLACTIVITY CONTROL SYSTEMS 79-003/03L-0 020279 0 REDUCE POWfR 10 APPROxlMAILLY $8%.

AS A k ESut i 0F DROI PE D ROD I,0 TH QL CU:w0NENI CODE tMI APfLICABLE 025005 30-DAY ADRANT POWER TILI STEADY STATE LIMIT AhD IRANSIENT LIMai W[LE EXCLECfD.

Su b C 0t iP ON EN T NOI APPLICABLE STL ADY SI ATE AND TR ANS![Ni QUAERANI P0ufR IILIS WERE RETURhf D TO ALLOMA DIHER BLE LIMITS BY 1052.

AS MAXIMUM TILI til1IT WAS NOT EXCEEDED klACIOR f u'!E hui APPL IC ABL E R RAN-BACK AS DLSIGNED AND AL L STSILMS S UNC TIONED PkCPERL Y.

Ud LfffCI O ITEM NOT APPLICABLE N Pul5LIC HtALTH AND SAFETY.

E10LM FUSE ON B f HASE F OR CR 6-12.

FUSE WAS REPLACED AuD ACCEPTABLE V01 TUAGt AND CURRENI NEASUREMEN15 OBIAINED. SHUIDJWN IIARGIN VLRLFIED ABOVE 2:: Dit I A F/F AND QUACRANT PCWIR Illi MONITOR!D HOURLY FOR 12 HOURS.

EO D RLSTORLD OPE R ABL E WITHIN CHE HOUR AND QU ADR ANT POWER TILI RLSTORLD WIT HIN 30 NINUIES.

lHxtE M!t t ISL AND-2 05000320 010579 PERFORMING REACIOR Bult0 LNG SPRAY PUMP FUNCIIONAL TEST AND VALVE OPIRAE!

OlHik LNGhRD SAILIY FLATR SYS 79-004/03L-0 020279 LI1Y IEST, CONIROL R 00Pt INDICATION AND OPERATOR OBSERV ATIGN uf kE BOT IN VALVES 025006 30-DAY ACRfEMENI CONCERNING POSITION OF BS-V-18. SYSTEM CECLARED IN'IPERABLE AhD Gt0LE ACIION SIAILNENT Of I.S.

3.6.2.t fHILRED.

BECAUSE REDUJDANT BLDG. SPkA Cui:f ONE NT FAllURE Y SYSILM AND REACTOR BtDG. IHERGENCY COOLING SYSTEM WERE OPERABLE.

N t) E ULCHANICAL FitCI ON PUBLIC HEALIN AND SAFELY.

ALDICO, IhC.

FURTHER INVESi!GATION Rf VE ALED DIS ACREEME NT C0hCLRNING V AL Vf F OSIT ION W A 5 T UL 10 A BfNI VALVE Sill 1.

MODIFICAIIONS WERE MADE TO ALLOW VALVE OPIR AIOk 10 FUNCTION ON STRA10Hi PORTION OF THE S i t it. VALVE WAS RE ASSLHSLE D.

$1ROKE IIME TESTED AND DECL ARED OPER ABL E.

IN FUTURE SPACER biiWELN VA LVE AND OPERATOR WILL B E R Lil0V ED AND SIE.1 REPLACED.

IhRit Mll E !$1AND-2 05000320 010879 IN MODE I LEAKAGF. WAS RLPORTED IN THE VICINITY OF DH-R-98.

INJESTICATIO FESIDutt HEAT kEMOV SYS + CONT 79-005/03L-0 020279 NS &EVEALED A SMALL CRACK IN A PIPING WLLD JUST UPSTREAM OF THE VALVE.

PIPLS,FIITINCS S25007 30-DAY PEPORIABLE PER I.S.

6.9.l.9.D.

EFFtVENT WAS SAf' PLED AND ACTIVITY WAS LE N0 SUSC0hP0alNT PROVIDED SS IHAN MINIMud DLIECI ABL E LEVEL.

THUS NO EffECT ON PUBLIC HEALTH AND 5 Conc 0NiHT tAILURE AlLIY.

laCHANICAL Iltd H01 APPLICABLE EVENT CAUSED BY A CR ACKED WEL D WHICH FISUL T E D FRO?1 VIBR A T ION.

C0kkECTIV E ACTION TAKEN TO MINIMIZE LEAKAGE.

SUBSEQUINTLY THE CRACAfD SfCIION OF PIPING W45 WE L D RLP AIRED.

AE IS EVALUATING IF ADDITIONAL PIPE HANGERS AkE RLQUIRED TO REDUCE VIBRATION.

THRfL NILE ISLAND-2 05000320 081779 DURING INSPECTION OF EQUIPMENT A CABLES TH CONTROL I;UitDING AREA OM t/17 LHL,NkD SAFETY IEATR INSTR SYS 79-0CS/03L-0 020979

/79 DISCOVEEED SEIPOINIS OF 2 ftECMAILR LINE RUPIURE DETECTION PRES $UPE INSIRUMENTATION

• CONTROLS 025504 30-DAY SWIICHES (fu-DPIS-7833-1 & FW-DPIS-7883-2) OUISIDE I.S. ALL0dABLE LIMITS ballCH SP[CIFIED IN SCCIION 3.3.2.1 (196 PSID VS nJ2 PSID).

NO EV[NT CCCuk2LD

- 01HiR SUBStGUENT 10 OUT-OF-TOLfEANCE CONDITION OF SWITCHES WHICH WOULD HAVE R h01 APPLICAoLE LQUIRtD IHEM 10 BE OPERABLE, AND SINCE VARIANCE FRO 1 LIMIT WAS ONLY 2L H BARICH INST F U CU., DIV 0F IIT 0 EFFECT UN fuBt!C HEAllH AND SAFE!Y.

INSTRUMENT SLTIIN05 flay HAVI (H mGLD FROM INSTRUMENT DRIFT OR SIEAN 1EAK AGE.

CALIBRAIION OF TH151

' ilNIS WIL L BE CHECKED IN IUTURL TO DEIE RMINE DRIFT CHARACTERISli

-i1SENT PLAN IS TO REPLACE SuliCHLS OURING FI L OU LIE R I S 0 t A T I O N t' '

il0N SCHEDilLLD FOR FIRSI RtFUELIHG.

SWITCH ES RLC ALIER AliD AHD ILSit b MilSSACIORILY.

CD N

8 NO ti iY 13.

8979 LfR 001PUT O tt EVENTS AT THRL E MIL E 151AhD 2 PACE 20 F k Of1 1969 TO THE PRESENI OUIPUT SORILD Bf FACILITY AND EVENT DATE F AC11 IIY/SYSIE N/

su:?aatal/CCLPPNENT SUBCOLE/

!>0C K L T 00.

[VfHT Daft /

CAusE/CAUSE SUBC0er/

LER NO./

FEPORI DATE/

EVENT DESCRIPTION /

C 4?0NLNT MANUFAC10kER CCNTROL NO. RLPORI TYPE CAUSE LESCRIPilQN fit E E T11L E ISL AND-2 05000320 012679 IN MCCE S TR AVELLIhG WAltk SCFEENS WERE f0UND INOPERABLE CUE TO SICNIFIC S I A l l o.1 Sl RV UAltR SY5 + CONT 79-007/03L-0 022679 ANT BUIL D UP OF LEBRIS CAUSIhG A H I Gli DIFTERfNTIAL LEVEL ACFOSS ThE ILLE C0f tf %L N T CCDL hui A PPL IC ABL E 025343 30-DAY SCkEEN SYSIIM.

B[CAUSE NO EVENI OCCURRED UUICH REGUIR ED LMfiG(t.C f USL S t. L C C..^ O H L N n h01 AFPLICABLE OF RIVER WATER SYSithS AN3 BECAUSE SUfflCILHT FLGW TO THE kIVER UATEP fu Elitul&VE PROCLCUKES f1P IN OPiRAII0t4 AT THE ilitE EXIS1fD. 1FIS EVENT DID NOI HAVE AN AL/(kht NOI AFPLICABIL EfftCT ON THE HEALTH ANE SAFLTY OF THE FUtL IC.

Illii NOT AtPLICAELE PROCELURES DID h0T REQUIFE ONE OF THE SCREENS TO BE CONTINUCUSLY GPEPAEL E LURING PERIODS LHEN LARGE Ar!OUNTS OF DEBk!S ARE PFESEHf IN 1HE kIVER.

Af F EC TED SCFlINS utRE CL E ANED AND k LluE NE D 10 StkVICE.

PnCCELuiES TO B E CHANGED 10 (NSukt AT LEAST OHL SCRCfH REMAINS IN CONTINUGUS SERVICL LU RING PtRIOLS GF HIGH DEBRIS ON ThE RIVLR.

THK Et MIL E ISL AND-2 05000320 013079 PEEPARING 10 f re it R t10L L 4 f0UND THAT SukVElllANCE REGUIRED BY T.S. 3.1.2 K t S I I.U,d HEAT k ll10 V SYS + CONT 79-009/05t-0 022679 8 IGR PODE $ HAD NUT BtfH PE kf 0KMt D AF T E R r1AKLUP Pur:P S H A D B E EN T AC;E D C C. IP O NI N I COLL hol APPLIC#iLE 025333 30-DAY CUI SUBSEGUENT 10 INTRY INIO fi3LE 5.

BECAUSE NO CCRE AL1LRATILHS U!RL P SUECLMPCHENT 601 APPLICABLE ERf0RhED OR IOSITIVF REACTIVITY CHAh0ES F1 ALE. THIS EVENT DID hai hAVL AN LtIECTIVt PkOCEDURES ADVLRSE LFfECT CN IHC HEALTH AND SAFEIY OF THE PUBLIC.

idi APPLICADLE I T t:1 hai APPLICABL E LACK OF CLARITY IN THE SHUIDCW4 PROC LL'UR E 1HIICH DID NOT ADECUATELY SPECI FY PfkFORMANCE OF THIS EVENI REL ATED SURVLIL L AhCE.

THE SURVLit t ANCL Pf3 CEDUAE WAS COr:PL E TED S AilSF ACIDRIL Y a.C UNIT thifRED #100L 4.

THE tHUIL)

WH PkOCLDURE WILL BE PEVISLD IO CLARIFf htLD TO VERIFY VALVE LIhE-LP f0k 50RON IHJECTICH F L OW P A TH WHIL E IH I:0DE 5.

1 ru t E F1I L E ISLAND-2 05000320 021479 WHILE IN MOLE 1 FOUND BORDi CONCENIkATICN IN THE BCRIC ACID MIX TANK WAS FiAcIIVIIY CONTROL SYST.MS 79-080/01T-0 022679 GREATER THAH THAT REQUlsED B1 T.S.

3.1.2.9 AND IHAT THE L CO ACTIO<4 SIAI CC; W :.f al CODT NOT APT.! CABLE.

025334 2-WE!K Lt1ENT HAD NOT BtLH '

• V OK L D. BECAUSC A kiDUhDANT SOURCE OF f>0E d4 LAS AVA S u bi te.N Hl H T h3I AP P' '. C A BL E I L A B L E. AND BfJAUSE hs IVEhT OCCURRED WHIC H REQUIRED ECRCH IHJECTIca, IHI Pf45ChNil (FEOR S EVENT DIP h T ADVERSELY AfftCT INE ht AL TH AND SAFETY OF THE FUSLIC.

L ICt HSE D A SLNIOR OPEKA10R$

Illt! 00T APr'L IC A B L E THIS EVENT WAS CAUSED BY UNIT PERSONNEL FAILING TO RECOGNIZE Tif AT I rl E aC CLPTANLL CRIl[RIA 0F THE SURVLILLANCE PFLC[LbkE HAD NOT oLEN Mil.

THE P LR50NNLL INVGLVLD WILL Lt COUNSELLLD TO fiLUE C AREf UL LY RLVilu SURVEIL L AN CE WESULTS VS. ACCEPTANCE CRIIERIA.

IlJ E E NII E ISLAND-2 05000320 021779 CPERATING DIESEL GENERATCR Df-X-1B WiiH UNIT IN (10 D E 1 ON 02-17-79 AhD 0 LitL A G GE hlk t TGR SYS + CONTEGLS 79-011/05L-0 051679 2-21-79 D.G.

CUTPUT POW R L O?.Mf HCf D F L UC TU AlltiG UNill ELVfRSE P LL:i R C ;.U S E: Ulhi S. IN IE P.h A L CG12 US T I CH 025415 50-DAY ED TRIP.

Di'-X-1B UAS RLSickILD If Lif LI AIEL Y fotLGulHG BUIH CCCurEthCLS A Wr! C:9LNtNT h01 APPLICAELE hu SUCCES$tULLY LOADFD TO 2 :.1 F O R ONE HOUR CONFIkilING LPERAEllllY r.3 NE

- JiHi x G%I?h0 THE NIED FOR P L9 f Ckt11NG T.S.

3.8.1.1 AtilCH A.

sulH 0FiSITL CIRC 1 33 M PLICABLE UITS AND kttuhDANT D.G. UiLL GPERABLE AND EVENT DID NOT AfifCI PUBLIC i.E fAIRbAhp.S ICR5E ALTH AND SAFEIY.

T HC RLUCl. VISUtl INSPECTIONS F AIL E D TO REVE AL A DEFINITE CAUSE.

WIPali0 C OhlMCTIONS TO COVLRN0k AClUATLP UfPE IICHILhED AND VOLTAGE kEADINGS IA<r N TO INSURE OPERABILITY Of GOVEEHUR.

ACTUAILR OIL CHANGED AS AN ALDI.LO HAL C0kPICTIVE f:EASUkE.

WJRING CGhNECTIONS PH0BABLE CAUSE WILL LL icRIO DICALLY INSPECIED.

.