ML112760113

LER 78-030/01T-0 on 781218:during surveillance,MO-2-64A Recirculation Loop 11 Discharge Bypass Valve Would Not Close.Cause Is Unknown Due to Inaccessibility of Valve

ML112760113
Person / Time
Site:	Monticello
Issue date:	12/29/1978
From:	Galen Smith Northern States Power Co
To:	NRC/OI/RGN-III/FO
Shared Package
ML112760114	List: ML112760113 ML19270E913
References
LER-78-030-01T, LER-78-30-1T, NUDOCS 7901030132
Download: ML112760113 (5)

Text

REGULATOR NFORMATION DISTRIBUTION TEM (RIDS) 0 ACCESSION NBR:790J030132 DOC.DATE: 78/12/29 NOTARIZED: NO DOCKET #

FACIL:50-263 MONTICELLO #1, NORTHERN STATES POWER Co. 05000263 AUTH.NAME AUTHOR AFFILIATI.ON SMITHG.R. NORTHERN STATES PONER RECIP.NAME RECIPIENT AFFILIATION

SUBJECT:

LER#.78-030/0QT-0 on 781218:during survei llance under normal oper,MO-2-64A recirculation loop #11 discharge bypass valve would not close.Cause is unknown due to inaccessibility of Valve.

DISTRIBUTION CODE.: A002S COPIES RECEIVED:LTR TITLE: INCIDENT REPORTS

_1 ENCL / SIZE: __tJ db NOTES: _

RECIPIENT COPIES RECIPIENT COPIES ID CODE/NAME LTTR ENCL ID CODE/NAME LTTR ENCL ACTI.ON: 05 BC 01?6#3 4 4

• INTERNAL: 0r::I--G FI 1 1 02 NRC PDR 1 09 1&F 2 2 11 MPA 3 3 14 HANAUER 15 NOVAK/KNIEL 16 EEB 17 AD FOR ENGR 18 PLANT SYS BR 1.9 I&C SYS BR 20 AD PLANT SYS 21 AD SYS/PROJ 22 REAC SAFT BR 23 ENGR BR 24 COLLINS 0 0 24 KREGER 25 PWR SYS BR 26 HOUSTON 0 0 26 VOLLMER E JORDAN/IE 1 1 EXTERNAL: 03 LPDR 16 04 NSIC I 1 27 ACRS 16 16 0

Cq2 TOTAL NUMBER OF CO.PIES REQUIRED: LTTR 0

43 ENCL 43 0

REGULATOR NFORMATION DISTRIBUTION TEM (RIDS)

ACCESSION NBR:7901030128 DOC.DATE: .78/.12/29 NOTARIZED: NO DOCKET #

FACIL:50-263 MONTICELLO #1, NORTHERN STATES POWER Co. 05000263 AUTH.NAME A.UTHOR AFFILIATION MAYER,L.O. NORTHERN STATES .POWER RECIP.NAME RECLPIENT AFFILIATION KEPPLER,J.G. **REG.3,CHICAGO,0FF.OF THE DIRECTOR

SUBJECT:

Forwards LER#78-030/01T-0.

DISTRIBUTION CODE.: A002S COPIES RECEIVED:LTR __ ENCL _ SIZE:

TITLE: INCIDENT REPORTS NOTES.:

-- 0 RECIPIENT COPIES RECIPIENT COPIES ID CODE/NAME LTTR ENCL ID CODE/NAME LTTR ENCL

• ACTION: 05 BC 4 4 0 INTERNAL: 0.1 REG FILE 1 1 02 NRC PDR 1 0.9 I&E 2 2 11 MPA. 3 3 14 HANAUER 15 NOVAK/KNIEL 16 EEB 17 AD FOR ENGR 18 PLANT SYS BR 19 I&C SYS BR 20 AD PLANT SYS 21 AD SYS/PROJ 22 REAC SAFT BR 23 ENGR BR

.1 24 COLLINS 0 0 24 KREGER 25 PWR SYS BR 26 HOUSTON 0 0 26 VOLLMER E JORDAN/IE 1 1 EXTERNAL: 03 LPDR 1 04 NSIC I I 27 ACRS 16 16 0

TOTAL NUMBER OF COPIES REQUIRED: LTTR 43 ENCL 43

NORTHERN STATES POWER COMPANY MINNEAPOLIS, MINNESOTA 55401 December 29, 1978 Mr J G Keppler Office of Inspection & Enforcement U S Nuclear Regulatory Commission 799 Roosevelt Road Glen Ellyn, IL 60137

Dear Mr Keppler:

MONTICELLO NUCLEAR GENERATING PLANT Docket No. 50-263 License No. DPR-22 Recirculation Discharge Bypass Valve Failure The Licensee Event Report for this occurrence is reproduced on the back of this letter. Enclosed are three copies.

This event is reported in compliance with Technical Specification 6.7.B.1.e in that LPCI flow requirements could have been reduced under certain circumstances.

REGULATORY DOCKET FLE COPY

.rs very truly, 1 17 LOM/JAG /deh cc: Director, IE, USNRC (40)

Director, MIPC, USNRC (3)

MPCA Attn: J W Ferman 7901030()%

-Over-S

., S. NUCLI Al III,(; ULA I OtY COMMISSION NiC run M 366 INTERIM REPORT L.ICENSEIE: EVI NT IEIuOi Ir w .

CON IH101 B1ILOCK: L .. IP ILL EIIN I oil I YIE ALL JIlLOUlILL) INF:0IIMA'f ION)

MNI NI MINI P1 o 0* 00001 41 111c1 (

25 26 LICENSE TYPE 30 57 CAT 58 7 8 LICENSEE CODE 14 113 LICENSE NUMIInif CONT H OH1 I I LIQ0 0 1XI01 01 0 121 d A 11 112 1917 J

[ 8 SOURCE 6 60 61 DOCKET NMBE2 / 8 11169 EVENT DAT 74 5AE 75 REPORT DAE 8

80 EVENT DESCRIPTION AND PROBABLE CONSEQUEN 10 DURING NORMAL OPERATION WHILE PJORMTNG RFD . RTY SHrFfDTITfn ST JPTIT ANTy TT WAS I FOUND THI 10-2-64A, RECIRCIJATION LOOP TScHARGE BYPASS V/VE, WOULD NOT CLOSE. l SlD 6 7 B T THAT LPCI FLW PdUIREMENTS COULD HAVE FT]

03T] l 11 IS REPRTUALE UNDER . .. . .

[041 ] BEEN REDUCED UNDER CRTAIN CIRC ANCES. NO PREVIOUS SMILAg- URNCES. THERE

[ NO EFFECTS PUBLIC HEAL I OR SAFETY CORE SP TES WERE OP LE.

I /

/ '

so I

SYSrEM CAUSE CAUSE COMP, VALVE SUBCODE C. MPONE CODE SUBCODE SUBCOD 1B(D

/ CODE CODE IC/ (D LLz Z lzz Iz z IzIz 0 18 LJ@

19 z @

20 7 8 / 9 10 11 12 3/7 OCCUR RE NCE REPORT REVISION SEQUENTIAj/

CODE TYPE NO.

EVENT YEAR REPORT N.

[zlR1J 1 I o - LL .I .J L - Lol

/ 21 22 23 24 26 27 28 29 30 PRIME OMP.

31 32 COMPONENT ACT ON FUTURE EFFEC SHU TDOWN HU ASTACHMENT NPRD-4 T MET'HOD HOUR @23 SUBMITTED FORM SUB. SUP LIER MANUFACTURER T*ENACTION ON PL

@LU@ ( L 1oololol 37 40 LJ L.y.0 41 42 43 z @ 1z I9199 44 47 3 34 3 36

/ CAUSE DESCRIPTION D CORRECTIVE XCTIONS CAUSE OF OCC NCE UNKN AT THIS IME DUE TO INACCESSIBILI OF THE VALVE, TO 1 ASSURE PRO ER LPCI FLQk RECIRCULA ON SYSTEM TEMPORARILY MODFIED TO-CLOSE THE L#11 REC C PUMP SUdION VALVE INS OF RECIRC PUMP DISH RGE VALVE ON A LOCA IF 1 THE 11 LOOP IS RHE SELECTED LO . THE VALVE WILL BE AIRED DURING THE NEXT 1 4 OUTAGE OF SUFF CIENT DURATION.

80 7 8 9 FACILI rY OTHER STA US

(~~METHOD DISCOVERY OFG DISCOVERY DESCRIPTION STATUS  % POWE

[ )) LE 1 0 0 lNA ILJ SURVE LIANCE TESTING i 45 46 80 89 10 12 ly 44 ACTIVITY CONTENT RELEAEDF I) (r IHELE ;I AMO)NI O Al VIIVYS LOCAIION OF IELEASE S

[

7 I] Lz0@

8 9 10 Z 3111 NA I 44 I 45 NA 80 PERSONNEL P(SURES NUMBER TYPE DESCHIPIO I 39 7

W I 01 ofa 8 9 1 1 Z'LuJ 12 13 NA 80 PERSONNEL INJUnIES NUMBER DESCRIPTION I 8 9 11 12 . o LOSS OF OR DAM GE TO FA TY 89E DESCR)

TI z lj l ENAIP PUllLI 17T 10 0 NRC USE ONLY s ISSUED IDESCRIIPTIOND

[ lN j )( NA l 1 1 1 11 11j 7 8 9 10 68 so8 P2 612/295-5151 NAME OF PHEPAREI G, RwATH PIIONE:

N4C rOlI MA 31sts IJ. S. NS.All III LLA I OlY COMMISSION 11; INTERIM REPORT LI(ELNSL I(1 NE HLrOU I CUN H iI O K: (I'LEASE Ill NI Oil I YPE ALL ILOUIIILD) INP OIIMA I ION)

MI NI NI INI P1 10 ol0o10l - 1010 0l 0l1iJ0l01 W 4 1W11 11 T11 O 7 8 *1 LICENSEL COD i 14 1b LICENSE NUMII-Il 25 26 LICENSE TYPE JO 57 CAT 58 COINT "OURl" L J Ial sin 0 o1 21 d ( 11 2I 11 81 71 10 1 21 219 1I 1R 7 8 60 61 DOCKET NUMBER 68 69 EVENT DATE 74 75 REPORT DATE 80 EVENT DESCRIPTION AND PROBABLE CONSEQUENCES 1 DURING NORMAL OPERATION WHTILF PPRFORMTNG, RPGITTARTY C;I7HFTPTTFn TIPVPTTT ANCF TT WAS I FOUND THAT IJO-2-64A, RECIRCULATION LOOP #11 DISCHARGE BYPASS VALVE, WOULD NOT CLOSE. I F OE THIS IS REPORTABLE UNDER T.S. 6.7.B.1.e IN THAT LPCI FLOW REQUIREMENTS COULD HAVE BEEN REDUCED UNDER CERTAIN CIRCUMSTANCES. NO PREVIOUS SIMILAR OCCURRENCES. THERE I WERE NO EFFECTS ON PUBLIC HEALTH OR SAFETY, CORE SPRAY SYSTEMS WERE OPERABLE.

7 8 COUPVALV SYSTEM CAUSE CAUSE COMP. VALVE CODE CODE SUBCODE COMPONENT CODE SUBCODE SUBCODE 7

1IC 8 9 LB 10 LO (3 L.0 IzzIz Iz Iz Iz 1[I6 U 11 12 13 18 10 Uz 20 SEQUENTIAL OCCURRENCE REPORT REVISION REPORT NO. CODE TYPE NO.

I L O EVENT YEAR NU R1 21 22

-J 23 24 26 InI 27 28 11iJ29 LO 30

-1 31 Lo 32 ACTION FUTURE EFFECT SHUI DOWN , ATTACHMENT NPRD-4 PRIME COMP. COMPONENT TAKEN ACTION ON PLANT METHOD HOURS 22 SUBMITTED FORM bUB. SUPPLIER MANUFACTURER L O W 33 34 35 W..J WU 36 370 IlloloJ LJ@ LJ 41 42 LO@ I z 19 19 I9 43 44 47 CAUSE DESCRIPTION AND CORRECTIVE ACTIONS

[ I CAUSE OF OCCURRENCE UNKNOWN AT THIS TIME DUE TO INACCESSIBILITY OF THE VALVE, TO I I ASSURE PROPER LPCI FLOW, RECIRCULATION SYSTEM TEMPORARILY MODIFIED TO CLOSE TIE I 1 #11 RECIRC PUMP SUCTION VALVE INSTEAD OF RECIRC PUMP DISCHARGE VALVE ON A LOCA IF 1 13I1 TI-I #11 LOOP IS THE SELECTED LOOP. THE VALVE WILL BE REPAIRED DURING THE NEXT I

- I OUTAGE OF SUFFICIENT DURATION.

89 80 FACILI TY METHOD OF STATUS %POWER OTHERSTATUS G DISCOVERY DISCOVERY DESCRIPTION G

[1 LW 111 1 LB (DI SUEILLANCE TESTING 8 9 10 12 i1 44 4G 41 80 ACilVITY CONTrENT LOCATION OF RELEASE AELAV lY OF NELA AMIOUNI Of ACIIViY LO ZJ0 UUI G 10 1 - NAIINAI 11 44 1 8 9 45 80 PERSONNEL FXPOSUiIES NUMBEH TYPE DESCHIPI ION 1

TW8 9 01 01 l0l Z31 NA i 12 13 0 PERSONNEL INJURIES NUMBER DESCRIPTIONS 1

1 I oI 1 8lI 8 9 11 12 NA IOWI OF Oil DAMAGE TO FACILITY TYPE DESCRIPTION FI8 Is I NA I 1 9 10 IBLICIlY'10 1O(N IS El I)ESCitIP IIMEHODN NRC USE ONLY 5

LAN OFAitELEASE 680 1 8 3 1068 69 80o 0

NAME OF PiEPARHI G, R. SIf'TH PHIONE: 612/295-5151