ML18018B142

LER 77-029-00, 77-030-00, 77-031-00, 77-034-00, & 77-035-00 for Nine Mile Point Unit 1 Low-Low-Low Level Set Point Out of Specs on RE-18A, Vacuum Switch Trip & Reset Point on Torus Relief Valves Out of Specs, Weld Leak in Emergency Condense

ML18018B142
Person / Time
Site:	Nine Mile Point
Issue date:	07/14/1977
From:	Schneider R Niagara Mohawk Power Corp
To:	O'Reilly J NRC Region 1
References
LER 77-029-00, LER 77-030-00, LER 77-031-00, LER 77-034-00, LER 77-035-00, LER 77-036-00
Download: ML18018B142 (14)

Text

U.So NUCI.EAR REGULATORY C SSION DOCKET NUMBER NRC FDRM 195 (2-76),' ~ ~

FILE NUMBER NRC 6ISTRIBUTION FOR PART 60 DOCKET MATER(AL, 'NCIDENT REPORT TO: FROM: DATE OF DOCUMENT James P 0,'Reilly Niagara Mohawk Power Corp. 7/14/77 Syracuse,NY DATE RECEIVED R. R. Schneider 7/20/77 LETTER QNOTORIZED PROP INPUT FORM NUMBER OF COPIES RECEIVED CI ORIGINAL 0 UN C LASS IF I ED OPY DES C R I P T I 0 N ENCLOSURE Licensee Event Reports (50-220/77-29, 77-30, 77-31, 77-34, and 77-35)

KgyVIZM~@: on 6/16, 6/16, 6/18, 7/3, and 7/5/77 concerning low-low-low level set point out of specs on'RE-18A, vacuum switch trip and reset point on torus relief valves out of specs, weld leak in go goi REMOVE emergency condenser valves, and failure PLANT NAME- Nine Mile Point 'Nucleax Station of RTD to maintain required accuracy.

Unit No. 1 1p+5p RBT 7/21/77 NOTE: IP PERSONNEL. EXPOSURE IS INVOLVED SEND DIRECTLY TO KREGER/J, COLLINS FOR CT /I NF0 RM AT I ON BRANCH CHIEP:

W 3 CYS POR ACTION W CYS ACRS CYS INTERNAL D ISTR I BUTION REG F NR PDR I &E 2 MIPC SCHROEDER/IPPOLITO HOUSTON NOVAK/CHECK GRIMES BUTLER HANAUER TEDESCO/MACCARY EISENHUT BAER SHAO VOLLMER BUHGH KREGER/J COLLINS EXTERNAL DISTRIBUTION CO OL NUMBER LPDR:

TIC:

N ~ 72020321 NRC FORM 195 (2 78)

~ I, ATTACHMENT TO LER 77-36 for NMP k'1 EVENT DESCRIPTION During routine unit startup, 811 Emergency Cooling System was discovered to be inoperable. Ultra-sonic testing of system ll's condensate return inlet valve (39-01) indicated that the valve stem was separated from the disc. The normally open valve was run to closed position and a surveillance test was run on the redundant Emergency Cooling System (812) in accordance with Technical Specification 4.1.3.4 No problems were encountered. A Technical Specification change was requested to allow normal operation with one Emergency Cooling System inoperable, beyond the seven days currently allowed. In addition, it was requested that the increased surveillance for operation with an inoperable emergency cooling system be performed on a weekly rather than a daily basis.

At the conclusion of Cycle 5, maintenance will be performed on the inoperable emergency cooling system to place it back in service.

CAUSE DESCRIPTION A Crane Company 10 inch list 900 W.E.O.S. Gate Valve failed to open or close automatically or open manually. It is suspected that the valve stem has separated from the disc or has sheared at some point along its length. The actual cause cannot be determined until the valve is disassembled.

J 1

r LICENSEE EVENT REP

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CONTROL BLOCK: fPLEASE PAINT ALL REQUIRED IN&OAIVIATION) 1 LICENSEE LICENSE EVENT NAME LICENSE NUMOER TYPE TYPE gg89 N 7

Y N NP I 14 15 25 26 4 1 1 I I 30

~0 31 32 REPORT REPORT CATEGORY TYPE SOURCE DOCKET NUMOER EVENT DATE REPORT DATE Q~gccwv~ L L 05 0 0 2 2 0 0 7 I 2 7 7 07 2 0 7i 7 7 8 57 58 59 60 61 68 69 74 75 80 EVENT DESCRIPTION QP2 SEE ATTACHMENT FOR DESCRIPTION 7 8 9 ~ 80 7 89 80

~04 7 8 9 80

[ops 8 9 80

{oat LER 77-36 7 8 9 PRIMAE 80 SYSTEM CAUSE COMPONENT COMPONENT CODE CODE COMPONENT CODE SUPPLIER MANUFACTURER . VOLATION

~CP ~E V A L V E X C 6 6 5 ~N 7 8 9 10 11 1P 17 43 44 47 48 CAUSE DESCRIPTION Qo 8 SEE ATTACHMENT 7 8 9 80 QOg 7 8 9 80

[isa]

7 89 METHOD OF 80 FACILITY STATUS POWER OTHER STATUS DISCOVERY DISCOVERY DESCRIPTION Q~g 7 8 9 c ~00 4 NA 44 45 46 80 10 12 13 FORM OF AMOUNT OF ACTIVITY LOCATION OF RELEASE NA 7 8 9 10 11 44 45 80 PERSONNEL EXPOSURES 7

~13 8 9

~00 NUMOER 11 TYPE

~Z 12 13 DESCRIPTION NA 80 PERSONNEL INJURIES NUMOER DESCRIPTION Qg ~oo o NA 7 89 11 12 80 dggljtIxl, YCONSEQUENCES PROBABLE Qsj NA 7 8 9 80 LOSS OR DAMAGE TO FACILITY TYPE DESCRIPTION Q~g Z NA 7 89 10 80 PueLICITY NA 7 89 80 ADDITIONAL FACTORS 7 89 80 7 89 NAME'HONE: CP0,44'I ~

80 467

'LICENSEE EVENT REPO CONTROL BLOCK: [PLEAGE PRIMT ALL RMUIAED IPJFOAMAT(OI'4)

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LICEttSEE LICENSE EVENT NAME (oO] N 7 N N P 1 4 1 1.1 1 ~p~g 7 89 25 26 30 31 32 RL'PORT REPORT CATEGORY TYPE SOUfICE OOCKET'4UMOER EVEttT 0 TE REPORT OATS

[oO~]cove~ 7 ~L 0 5 0 0 2 2 0 0 6 T 6 7 7 0 7 1 3 7 7 7" 0,57 58 59 60 61 68 69 74 75 80 EVENT DESCRIPTION at' Jog Durin routine surveillance testing, found reactor low-low-low level setpoint 89 80

@~3 140" on RE-18A. Should have been 125'+ 2.0-2.5". Reset to 126". Inspected 7 89 80 tooj4 friction and mechanical defects, found none. Redundant instrumentation operable.

LER 77-29

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[oaf 7 8 9 80

[oa~3 7 8 9 SYSTEM CAUSE PI E COMPONENT 80 COMPONENT'lWUFACTURER SUPPUER VCIATION U A LBB 0~80 N 7 8 9 10 11 ~

12 17 43 44 47 48 CAUSE DESCRIPTION

[0DB] Instrument setpoint dri ft.

7 8 9

~os 7 8 9 Qoj 7 89 METHO3 OF 80 FACILITY STATUS POWER OTHER STATUS OISCOVERY DISCOVERY OESCRIPTION E5 7 8 9 6 ~oo o 12 13 NA 44

~B 45

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Surveillance Test 80 10 4G FORM OF AMOUNT OF ACTIVITY LOCATION OF RELEASE NA 7 8 9 10 11 44 45 80 PERSONNEL EXPOSURES NUMBER TYPE OESCRIPTION Qsg ~00 0 2 . NA 7 8 9 11 12 " 13 80 PERSONNEL INJURIES NUMBER OESCRIPTION

~~~ ~00 0 NA 7 89 11 12 80 ANNAL cowssousscss pROBABLE Q~g 7 89 60 LOSS OR DAMAGE TO FACILITY 7

Q~g 89

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TYPE 10 OESCRIPTION NA 80 PUBLICITY NA 7 89 ADDITIONAL FACTORS

~18 NA 7, 89 Q~g 7 89 80 CPO 00 I 0 07

Nh(P- 004 8 NIAGARA MOHAWK POWER CORPORATION NIAGARA

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MOHAWK 300 ERIE DOUI.EVARD, WEST SYRACUSE. N. Y. l3202 JuLy 14,

- - g,cog, O.'ReiXL< i+$4

~EYO6 lib. Jam~ P NJLe&ok Used S~e6 NueLeat Regulato<IJ Con ncb6<on Region I 631 Parch Avenue Kmg o$ P~6kx, PA. 19406 RE: Sock& No. 50-220 geaPI, h(PI.. O'Reify:

In accordance ~k N~e hKCe Po~ NucL~

TecluucaL Spew.gc~on6, toe hereby 6ubnkt Licen6ee

~on 0~

Eve: Repo~

LER 77-29, 77-30, 77-31, 77-34 and 77-35.

The6e rcepo~ uIePIe compL&ed ~n Che $ o~at de6~gnat'ed Licen6ee Eveet RepoM In6Wu~on BookLM 00E-SS-.001, ~ed.

~ She 0&obn 1974, JI.ev~ed Gecembec 8, 1975.

Ver,y ~y go~,

ORIGINAL SIGNED BY R.R. SCHNEIDER R.R. SclumufeA Vzce PJce6&eet-ELe~c Pcodu~on h(AS/mmmm kttachm~

xc: Vme&oe, ISE (40 cop~e6)

OMmtde, h(IPC (3 cop~e6) 772P2P32j

LICENSEE EVENT REPO+ 'I CONTROL 8LOCK: (PLEASE PRINT ALL REQUIRED INFoRMATIoN3 1 6 UCENSEE NAME LICENSE NUMOER LICENSE TYPE

'VENT TYPE 4 1 1 1 1 ~03 7 89 14 15 25 26 30 31 32 REPORT REPORT CATEGORY TYPE 'SOURCE DOCKET NUIliOER EVENT DATE REPORT DATE

[ca~Ice@'T~ L ~L 0 5 0 0 22 0 0 6 1 8  ?  ? 0  ? 1 3 7 7 7 8 57 58 59 60 61 68 69 74 75 FVENT DESCRIPTION Jog During routine surveillance test, found vacuum switch trip and res'et point on 7 8 9 80 toD3] reactor building to torus relief valves (68-12A) set 8" and <0". Should have 89 80 tQ been < 7" and > 2". Reset at'6;5" and 2.3". Redundant sensors operable.

7 8 9

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QOg 7 8 9 80 l LER 77-31 Jog 7 8 9 PR?hE 80 SYSTEM CAUSc COMPONENT COMPONENT' CODE CODE COMPONENT CODE SUPPUdl MANUFACTURER VIOLATION

[cO'] ~SA ~E I N S TR. U N N 2 3 5 IN 7 8 9 10 11 12 17 43 . 44 47 48 CAUSE DESCRIPTION 7

gg8 9 rn Jog 7 89 80 7 89 METHD9 OF FACIUTY STATUS POWER OTHER STATUS DISCOVERY DISCOVERY DESCRIPTION Qg8 ~8 [oaooJ12 ~B 'urveillance Test 7 9 10 13 44 45 46 80 FORM OF ACTIVITY COATENT 7

Q~g 8

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RELEASEO 9

OF RELEASE 10 1'I NA AMDUNT OF ACTIVITY 44 45 LOCATION OF RELEASE 80 PERSONNEL EXPOSURES NUMBER TYPE DESCRIPTION

[iisj ~00 0 2 .NA 7 8 9 11 12 13 80 PERSONNEL INJURIES NUMBER DESCRIPTION

~>4 ~00 0 NA 7 89 11 12 80 X5ggfg CONSEOUENCES PROBABLE NA 7 8 9 LOSS OR DAMAGE TO FACILITY TYPE DESCRIPTION Z NA 7 89 10 PueLICITY Q~~]

7 0 9 Q NA AODITIONAI. FACTORS Q~g 7 89

+1q 7 89 00 NAME: PHONE:

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LICENSEE EVENT REPOR CONTROL BLOCK: fPLEASE PRINT ALL REQUIRrD IMFQRflATIOIYI) 1 I.ICENSEE UCENSE EVENT h NAME LICENSE NUMBER

~Oh N Y N 14 P I 4 1 I 1 I ~03

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7 09 15 25 26 30 31 32 TIEPOAT AEPOAT CATEGORY TYPE SOURCE DOCKET NUMOEA EVENT DATE ACPOAT DATE

'061]coN'T T ~L 0 6 0 0 2 2 0 0 6 1 6 7 7 0 7 1 3 7 7 7 8 57 58 59 60 61 68 69 74 75 80 EVENT DESCRIPTION Qpg Dur ing routine surveillance testing, found reactor low-low-low level setpoint at 7 0 9 II Qo 3 127',"II on RE-18B. Should have been 125 + 2.0-.2.5". II Reset to 125". Inspected 7 09 00

~04 for friction and mechanical defects, found none. Redundant instrumentation operable.

80 LER 77-30

.7 89 00

'Jog 7 8 9 PAhhIE

[aO~I 7 8 9 10 SYSTEM CODE

~IB CAUSE CODE

~E 11

'IN 12 COMPONENT CODE 3 T II 0 17 COMPONENT SUPPLKA

~A 43

~80~80 COMPONENT IAWUFACTURER 48 CAUSE DESCRIPTION

[oO~j Instrument setpoint drift.

7 89 00

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7 0 9 80

~10 7 89 METMOO OF 00 FACILITY STATUS 36 POWER OTMEA STATUS OISCOVEAY OLSCOVERY DESCRIPTION EO" 7 8 9 0

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~00 0 12 13 NA 44 45 46

'Surveillance Test 00 FORM OF ACTIVITY COATENT AEI.EASCD OF RELEASE AMOUNT OF ACTIVITY LOCATION OF RELEASE Q~g Z Z NA NA h 7 0 9 10 11 . 44 45 PERSONNEL EXPOSURES NUMBER TYPE DESCRIPTION

~hh ~00 O ~Z NA 7 09 12 13 00 PERSONNEL INJURIES NUMQEA DESCRIPTION

~00 0 NA 7 89 11 12 00 5%8%< CONsEoUENCES PROBABLE NA Qqg 7 09 80 LOSS OR DAMAGE TO FACILITY TYPE DCSCAIPTION

~Z NA 7 09 10 PUOLICITY h h

NA 7 09 ADDITIONAl. FACTORS Q~g NA 7 09 00 Qg 7 09 00 PHONE:

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LICENSEE EVENT REPO- s CONTROL BLOCK: (PLCAOE PRINT ALL REQUIRED INFORMATION) 1 6 s UCENSf E LICfNSE EVENT s NAME UCENSC NUMUEA TYPE TYPE

[oaj N I N N P 1 1 1 1 1 ~04

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7 09 14 15 30 , 31 32 AEPOAT AEPOAT CATEOOAY TYPC SOUACC DOCKET NUMBCfI EVENT DATE AEPOAT DATE

~os coen T ~L 0 5 0 0 22 0 0 7 0 5 7 7 0 7 13 7 7 7,' 57 59 59 80 61 68 69 74 75 80 EVENT DESCRIPTION Qg8 RTD in condenser dischar e failed to maintain re uired acuracy of +3; F.'TD in 7 9 80 denser inlet north water box failed o en. In both cases redundant RTD's were 7 89 80 tooj4 0 erable. Inaccurate instrument recalibrated and returned to service.

7. 89

~os 7 8 9 LER 77-35 7 8 9 PAL%!E 80 SYSTEM CAUSE COMPONENT COMPONENT

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CODE CODE COMPONENT CODE SUPPLEA MANUFACTUAEA VIOLATION

[onsI ~HE E N 5 T R 0 L c .5 1 5 7 8 9 10 11 12 17 43 44 47 48 CAUSE DESCRIPTION

~o e Instrument drift caused inaccuracy of about I', P in condenser discharge RT0 8 9 *" 80 Q~ 8 Failed instrument wi 11 be replaced and/or repaired.

7 8 9 80 7 89 METHOD OF 80 FACILITY STA'IUS 55 POWEA OTHER STATUS DISCOVEAY OISCOVEAY DESCAIPTION Q'g N ~00 0 NA Surveillance Test - Calibration 7 8 9 10 12 13 44 45 46 80 FOAM OF ACTIVITY COATENT ACLEASEO OF AELEASE 'MOUNT OF ACTIVITY LOCATION OF AELEASE Q~g Z Z NA 7 8 9 10 11 44 45 80 PERSONNEL EXPOSURES NUMBEA TYPE DESCAIPTION 0 Z NA 7 89 11 12 - 13 80 PERSONNEL INJURIES NUMBEA OESCAIPTION 00 0 NA 7 8 9 11 12 80

>QXRIXK cONSEoUENCES PROBABLE Q1g NA 7 89 80 LOSS OR DAMAGE TO FACILITY TYPE OESCAIPTION NA Q~g Z 89 10 80 PUQLICITY NA 1.6(

7 8 9 6y >

ADDITIONAL FACTORS Q~g NA 9HiSS~~O" 7 0 9 gaHAJ 80 7 09 NAME: PHONE:

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LICENSEE EVENT REPOR CONTROL BLOCK: (PLEASE PRINT AU. RL'QUIRED IIIIFOAMATION)

UCENSEE UCENSE EVENT NAME LICENSE NUMBER TYPE TYPE Jog N Y II II P 1 41 1 1 1 ~01 7 89 14 15 25 26 30 31 32 REPORT REPORT CATEGORY TYPE SOURCE DOCKET NUMBER EVENT DATE REPORT DATE Ioa~jcoov~ T I. 0 5 0 0 2 2 0 0 7 0 37 7 0 71 3 7 7 7 8 57 58 59 60 61 68 69 74 75 80 EVENT OESCRIPTION >>

toa~] During hydrostatic test found leak at weld between emergency condenser valves 39-01 7 89 80

[oaf and 39-03. Weld was ground out and repaired. Both PT and Radiographic examinations 7 89 80 were made durin and followin re airs.

7.89 80 Qog 7 8 9 80 Jog LER 77-34 7 8 9 PRME 80 SYSTEM CAUSE COMPONENT COMPONENT CODE CODE COMPONENT CODE SUPPUER MANUFACTUAER Ice~l~05 5 P I P 5 'xx A K 05 5 ~N 7 8 9 10 11 12 17 43 44 47 48 CAUSE DESCRIPTION toom Defect was in ori inal weld to valve body. Cause being investigated.

7 8 9

~os 7 8 9

~10 7 89 FACILITY METHOD OF 80 STATUS  % POWER OTHER STATUS DISCOVERY DISCOVERY DESCRIPTION E38 7 9 H ~00 10 0

12 13 NA 44 45 46 Hydrostatic Test 80 FORM OF ACTIVITY COATENT RELEASED OF RELEASE AMOUNT OF ACTIVITY LOCATION OF RELEASE Q1g Z ~Z NA NA 7 8 9 10 45 80 PERSONNEL EXPOSURES 7 89 11 12 13 80 PERSONNEL INJURIES NUMBER DESCRIPTION

~<< ~oo o NA 7 89 11 12 80 XIQNM( GQNBEQUENGEs PROBABLE

~15 NA 7 8 9 LOSS OR OAMAGE TO FACILITY TYPE DESCRIPTION Q~g Z NA 7 09 10 PUBLICITY NA I>> >>> g,>> ~ >>

7 I39 '~ ~"'i ll qoj 80 AOOITIONAL FACTORS 7 89 80 PHONE:

CPO 885 ~ 007

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To- z~FR(N:- ~<'3 43 6ATE/TD'E 1 Tc.3c:ll)l'.n~= tlu"hc.r 'e)@phone limier j ~' (

Ja)m" P. O'Heilly From: Reagan mohawk Pow.r Corpora,%

0) rectot of PcguTOCGry Qpcrailon Nine bile Point fluclear Station USllK P.=-":icn Z Bait II'I 637 P;rP. f::enuc P.O.'or. $ 32 Qng 0 Prussia. PA. 19@06 tycceain9, Has York l3093 R;B~ ECT: PPG'.l'7 REPOliTWLE CCCURRENCE MCrET n0. 50-220 LXCBfSE M. DPR-63 A55KG'<EO LEP. NO. 7T- 34 EVDiT DATE: 7 3 77 7/5/TT H'ENT DiSCPIPl ION:

Leak in reactor coolant pressure boundary weld found during hydrostatic test. The we>d is a valve to valve mid fn the Emergency Condenser-Condensate return 1ine.

CO.PO.,<<;;T5 I -OL. ~ Emergency Condenser Valves SV-39-0l, 39-03 CMSE. Nlo ~="!. DEAL ACTION

~ne cause $ s unlcnown cut and repaired.

it the present t$ me The ~'ld mal. be ground PCIUTV STD US:- i TH~mtijou fQ c) Routire Smitup g) Shut:dms cl) Rou ir~ 5'" dc~a h) Refuel ir@

<) Steady 5".3te Oper 0) Other

~ ) k.cad Cl:.=nge y) Rot Applicable P

A r ri-:c~,@33. -up rel>6rt will be sent within be ~ks taL COPY l0 .! 7-

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l "l,.! FR(N ~3 7 ATE, 8 I~ ~ II ' ~ ~ ~ I~

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'TO: i.rate e)%if Java P. O'Rei'l)y Free: Riagaf'il ho[ lDNR'oli'f Corpora/i pn Director. of PcgulatorJJ Operation hive tRi7c Point. huc7ear Station VSlfRC Pi~icn X 633 Part fi.enuc Uoit P.O.

fl Gor. f32 King of Prus ia. PA. 19406 lyccming. Hns York 13093 SUI .'ECE: PR'R:r'T REPORTABLE CCCORREHf:E 60CVET RQ. M-220 LICHISE )IO. DPR-63 ASSESLCD LD'S. 11-c.s'E'le DATE: 7/5/77 RDOaT WTE= 716//TT EVE4T DESCRIPTlAN='=,D in condenser discharge fa4'fed. to maintain +qu=.red ac+racy f ~ oF.

RWi in condenser inlet. orth mter box Vaiied open Kn both cases redundant RTO's ~re operabTe.

CO:lPO:iCllTS D,"iQLV-"0: Resistance Tanperature Oe7ectors (RTD) in condenser in)et and discharge filiD R=~:iGIAL ACTION"

U5E Instant driest caused inaccuracy of'pproximate'Ey f4oF in condenser cfischarge Fii) testkent seas recaiibrated and returned to service Cause of fa47ure to condenser 4n'let RTU's ainkncneo inlet temp.

is being recorded using a redundant RTD.

0 c) Routine S artup 9) Shvtdpwn d) Bpv inc Sh"tdim e> Stairway St>te Oper 0) Other f3 Road Ch...~ge J) Rot App13cQlpl8 g< l:ritter iÃ3p -up report mls be sent lecithin tm scabs 7" "-CO> Y TO FRY ~iz NIL'iL 4i c. NTE ~!

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