ML20057A406

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Summary of Operating Reactors Events Meeting 93-26 on 930714
ML20057A406
Person / Time
Site: Palisades Entergy icon.png
Issue date: 07/20/1993
From: Chaffee A
Office of Nuclear Reactor Regulation
To: Grimes B
Office of Nuclear Reactor Regulation
References
OREM-93-026, OREM-93-26, NUDOCS 9309140157
Download: ML20057A406 (17)
v • d • e


Text

i 1

O autz nasa o( i i

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MEMORANDUM FOR: Brian K. Grimes, Director Division of Operating Reactor Support FROM: Alfred E. Chaffee, Chi '

Events Assessme.t Branch Division of Operating Reactor Support

SUBJECT:

OPERATING REACTORS EVENTS BitIEFING l JULY 14, 1993 - BRIEFING 93-26 l On July 14, 1993, we conducted an Operating Reactors Events l Briefing (93-26) to inform senior managers from offices of the Chairman, NRR, ACRS, EDO, AEOD, and regional offices of selected events that occurred since our last briefing on July 7, 1993.

l Enclosure 1 lists the attendees. Enclosure 2 presents the significant elements of the discussed events.

Enclosure 3 contains reactor scram statistics for the week ending July 11, 1993. One significant event was identified for input into the NRC performance indicator program (Enclosure 4).

[ Original signed by]

Alfred E. Chaffee, Chief Events Assessment Branch  !

Division of Operating Reactor Support

Enclosures:

As stated DISTRIBUTION:

Central' Files

cc w/ enclosures: PDR See next page LKilgore, SECY EAB R/F KGray RDennig EGoodwin DSkeen SWittenberg l JRamsey AB/D EAB/ DORS EAB/ DORS KGray EGoodwin AChaffee  !

07/j/ /93 0 7 //c / 9 3 07/)C/93 I

q e e" "rm mtp kb pdLCE3 E npqQU 001 8 OFFICIAL RECORD COPY r f /

DOCUMENT NAME: ORTRANS.KAG (G:KAG) {

930914O157 930720 PDR ORG NRRB i/

A h/i / 1

,yby l e v .

O O

cc:

T. Murley, NRR (12G18) A. Hsia (PDIII-1) i F. Miraglia, NRR (12G18) M. Gamberoni (PDIII-1)

F. Gillespie, NRR (12G18) T. Marsh (PDIII-1) i J. Partlow, NRR (12G18) '

S. Varga, NRR (14E4) i J. Calvo, NRR (14A4)

G. Lainas, NRR (14H3) ,

J. Roe, NRR (13E4)

J. Zwolinski, NRR (13H24) i E. Adensam, NRR (13E4) l W. Russell, NRR (12G18) i J. Richardson, NRR (7D26) l A. Thadani, NRR (BE2)

S. Rosenberg, NRR (10E4)

C. Rossi, NRR (9A2) . .

B. Boger, NRR (10H3) l F. Congel, NRR (10E2) f D. Crutchfield, NRR (11H21) ,

W. Travers, NRR (11B19)

[

D. Coe, ACRS (P-315)

E. Jordan, AEOD (MN-3701) l G. Holahan, AEOD (MN-9112) "

L. Spessard, AEOD (MN-3701)  ;

K. Brockman, AEOD (MN-3206) '

S. Rubin, AEOD (MN-5219)  !

M. Harper, AEOD (MN-9112)  !

G. Grant, EDO (17G21)  !

R. Newlin, GPA (2G5) '

E. Beckjord, RES (NLS-007)  ;

A. Bates, SECY (16G15) ~

G. Rammling, OCM (16G15)

T. Martin, Region I l W. Kane, Region I i C. Hehl, Region I i S. Ebneter, Region II l

E. Merschoff, Region II i S. Vias, Region II  !

J. Martin, Region III '

E. Greenman, Region III J. Milhoan, Region IV B. Beach, Region IV B. Faulkenberry, Region V K. Perkins, Region V i

bec: Mr. Sam Newton, Manager Events Analysis Department i Institute of Nuclear Power Operations 1 1

700 Galleria Parkway l Atlanta, GA 30339-5957 1

l  :

l

.._ _ , 1

I ENCLOSURE 1 LIST OF ATTENDEES OPERATING REACTORS EVENTS FULL BRIEFING (93-26)  !

JULY 14, 1993 NAME OFFICE NAME OFFICE i

l K. GRAY NRR M. VIRGILIO NRR i S. WITTENBERG NRR J. ROE NRR A. CHAFFEE NRR J. ZWOLINSKI NRR E. GOODWIN NRR J. PARTLOW NRR B. GRIMES NRR F. MIRAGLIA NRR l N. HUNEMULLER NRR S. VARGA NRR I S. LONG NRR J. CALVO NRR I F. GRUBELICH NRR D. COE ACRS l D. DESAULNIERS NRR K. SHEMBARGER OCM/IS  :

M. GAMBERONI NRR T. MEADOWS RV  !

D. CARTER NRR A. BURRITT RI ,

E. KENDRICK NRR D. WHEELER OEDO  !

R. JONES NRR A. GODY, JR. OEDO i C. THOMAS NRR J. KAUFFMAN AEOD I 1

TELEPHONE ATTENDANCE (AT ROLL CALL) l l

Recions Resident Inspectors i Region II Region III Region IV Region V IIT/AIT Team Leaders Misc.

! W. Dean l A. Hsia l

l 1

l

0 0 ENCLOSURE 2 i

i l

1 OPERATING REACTORS EVENTS BRIEFING 93-26 l

LOCATION: 10 B11, WHITE FLINT l WEDNESDAY, JULY 14, 1993, 11:00 A.M. ]

PALISADES REFUELING OUTAGE PROBLEMS  !

(STUCK CEA, BROKEN FUEL ROD, STUCK FUEL ASSEMBLY) [AIT]

PRESENTED BY: EVENTS ASSESSMENT BRANCH DIVISION OF OPERATING REACTOR SUPPORT, NRR

9 9 l 93-26 l PALISADES REFUELING OUTAGE PROBLEMS l JUNE-JULY 1993  ;

PROBLEM SEVERAL EVENTS (ATTACHED CONTROL ELEMENT ASSEMBLY [CEA],  !

BROKEN FUEL ROD, AND STUCK FUEL ASSEMBLY [FA]) HAVE l OCCURRED DURING REFUELING OUTAGE. ;j CAUSE TO BE DETERMINED. l 1

SAFETY SIGNIFICANCE l PROGRAMMATIC BREAKDOWN. l BACKGROUND

e ON TWO PREVIOUS OCCASIONS (SEPTEMBER 1988, AND FEBRUARY l I

! 1992) FAs IN CORE LOCATION Z-11 WERE FOUND STUCK TO BOTTOM 0F UPPER GUIDE STRUCTURE (UGS) . ROOT CAUSE ANALYSIS BY LICENSEE AFTER 1992 EVENT IDENTIFIED BENT i UPPER GUIDE STRUCTURE PINS BUT DID NOT IDENTIFY HOW j PINS WERE BENT. l DISCUSSION l o LICENSEE ENTERED A SCHEDULED 50 DAY REFUELING OUTAGE l APPR0XIMATELY JUNE 4, 1993. l l

i CONTACTS: W. DEAN, NRR/PDIII-1 AIT: YES~  !

J. RAMSEY, NRR/ DORS. SIGEVENT: TBD l

REFERENCES:

10 CFR 50.72 #25652, #25725,

  1. 25748, MORNING REPORTS-3-93-0184, 3-93-0200, l 3-93-0201, AND 3-93-0206

{

~

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- j PALISADES 93-26 l e ON JUNE 15, 1993, A CEA WAS LIFTED WHEN THE REACTOR VESSEL HEAD WAS REMOVED.

  • LICENSEE COMPLETED REFUELING ON JUNE 27, 1993.

e ON JULY 1, 1993, LICENSEE IDENTIFIED A BROKEN FUEL PIN  !

IN BOTTOM 0F REFUELING CAVITY TILT PIT WHILE LOWERING j WATER LEVEL. R0D IN THREE PIECES; FUEL PELLETS FROM l ONE PIECE MISSING. l l

e LICENSEE . TRACED FUEL PIN TO FA I-024 IN CORE LOCATION j B-19. THIS IS A FIVE CYCLE ASSEMBLY IN PERIPHERY OF  !

CORE FOR VESSEL FLUENCE REDUCTION. j e ON JULY 6, 1993, FA SAN 8 IN CORE LOCATION Z-11 REMAINED ATTACHED TO BOTTOM OF UGS DURING REMOVAL l (PREPARATORY TO INSPECTION OF FA I-024).  !

i e ON JULY 8, 1993, FA SAN 8 WAS FREED AND RETURNED TO ITS  !

CORE LOCATION. l l

e ON JULY 8, 1993, REFUELING ACTIVITIES SUSPENDED UNTIL COMPLETION OF LICENSEE'S PROMPT ASSESSMENT OF EVENT-AND AIT'S REVIEW 0F LICENSEE'S PROMPT ASSESSMENT.

e ON JULY 12, 1993, LICENSEE RESUMED REFUELING ACTIVITIES (WITH AIT CONCURRENCE).

e ON JULY 13, 1993, LICENSEE RECOVERED FA I-024.

REMAINING FUEL R0D FRAGMENT. FELL'FROM FA AND IS l POSITIONED ON TOP 0F CORE. '

!~ O O  !

i l PALISADES 93-26 e LICENSEE IS ASSESSING CONDITION OF FA I-024 AND: ROOT l CAUSE FOR FUEL R0D FAILURE, AND ASSESSING ROOT CAUSE OF j FA STICKING TO UGS.

l ,

e LICENSEE HAS NO IMMEDIATE PLANS TO PERFORM l ME7ALLURGICAL EXAM 0F FAILED FUEL ROD.  ;

4 e LICENSEE CONDUCTED SURVEYS TO LOCKTE FUEL PELLETS; ,

RADIATION LEVELS IN POOL AND PURIFICATION SYSTEM  ;

INCREASED SOMEWHAT, HOT SPOT IN REACTOR CAVITY. l FOLLOWUP l e REGION III SPECIAL INSPECTION TEAM DISPATCHED IN l RESPONSE TO ATTACHED CEA EVENT. l e AIT DISPATCHED IN RESPONSE TO BROKEN FUEL ROD AND STUCK i FA EVENT. j e REGION ISSUED CONFIRMATORY ACTION LETTER (CAL).

! e PRELIMINARY AIT WORK INDICATES DEFICIENCIES IN FUEL HANDLING PROCEDURES, WORK PRACTICES, AND OVERSIGHT.

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REVISION NO 12 )

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i ENCLOSURE 3 'i l  !

i REACTOR SCRAM

! I poportig Period: 07/05/93 to 0P/11/93 )

YTD YTD l ADOWE BELOW YTD gatl Ptawi 8 Uwit g g g CtMPLICAfl0NS $ $ g

$7/05/93 SAli DNOFRE 3 100 5A Equipment Failure No 2 0- 2 i L

07/07/93 ZION 1 100 EA Equipment Feltura NO 1 0 ' 1-l 07/08/93 COOPER 1 0 SA Neintenance Error NO O 1 1 -

l C7/09/93 petty 1 100 SM Equipment Fallwe No 2 0 2 E7/10/93 DRESDEN 3 93 SA operettne Error No 3 0 3 07/11/93 SALEM 1 97 EA maintenance Error No 3 1 4 l 1

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ITS 10 Pope:1 07/19/93  ;

1

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9 r i

l COMPARISON OF HEEKLY SCPW $1 ATISTICS 6f!TH INDUSTRY AVERAGES I

PERICE) ENDING .

07/11/93  !

W i

l NUMBER 1993 1992 1991* 1990* j WECLY OF WEEKLY MEKLY. WEEKLY WEKLY AVERAGE i

SCRAM CAUSE $0 RAMS AVERAGE AVERAGE AVERAGE AVERAGE (YTD)

POWER GREATER TRAN OR EDUAL TO 15% .l f

E001PMEKT FAltuRE' 3 2.0 2.6 2.9 3.4 '3.1 DESIGN /INSTALLAT!fW ERROR

  • O 0.1 - - -

h OPERATING ERROR

  • 1 0.4 0.2 0.6 0.5 1.0 i MAINTENANCE ERROR
  • 1 0.5 0.4 - ' - -

EXTEthAL* 0 0.1 - -

  • CTNER* 0 0.0 0.2 - - 0.1 .l 5 4 total 5- 3.1 3.4 3.5 3.9 4.2 I

POJER LESS ThAN 15% f l

t EDUIPMENT FA! LURE

  • 0 0.4 0.4 0.3 0.4 0.3  !

DESIGN /IWSTALLAfiON ERROR

  • 0 0.0 - - -

OPERATING ERROR

  • 0 0.2 0.1 0.2 0.1 0.3 l MAINTENANCE ERROR
  • 1 0.0 0.1 - - -

EXTERNAL

  • 0 0.0 - - - -

t OTHER* 0 0.0 0.1 - - -  !

subtotal 1 0.6 0.7 0.5 0.5 0.6 '

TOTAL 6 3.7 4.1 4.0 4.4 4.8 1993 1992 1991 1990 1989 i NO. OF WEEKLY WEEKLY WEEKLY WEEKLY WEEKLY I SCFAM Y WE SCRAMS AVERAGE AVERAGE AVERAGE AVERAGE AVERAGE .!

(YTD) l l

TOTAL AUTOMATIC 5: RAMS 5 2.6 3.1 3.3 3.2 3.9 4

)

TOTAL E NUAL SCRAMS 1 1.2 1.0 0.7 1.2 0.9 1 TOTALS MAY DIFFER BECAUSE OF kOUNDING OFF

  • Detsited breakdown not in database for 1991 and earlier

- EXTERNAL cause included in EDU1PMENT FAILURE

- MAINTENANCE ERROR and DESIGN /IkSTALLAfl0N ERROR causes included in OPERATING ERROR

- OTHER case included in EDU1PMENT FAILURE 1991 and 1990 l

l.115-14 Paper 1 07/19/93 l'

ENCLOSURE 4 ,

OPERATING REACTOR PLANT.3 OIGNIFICANT EVENT 3 [' 'I No sort SPecified GUERD Event Type SIC & Event Date >= 07/02/89 & Event Date <= 07/02/67 & =G8AND GULF"

  • Plant Name

. PLANT & UNIT k R DESCRIPit04 0F EVENT SIGNIFICANCE BRlblNG PRESENTER hE GRAND GULF 1 07/02/89 0 PARflAL PLUGGING OF SUCTION STRAINERS IN TME Safety Related Cooling System NONE CARTER J. INFORMAL /N!

SUPPRESSION POOL AT SWRs. TWO ENAMPLES OF TMIS LliE PROBLEM MAVE OCCURED AT GRAND GULF, ONE In 1988, AND THE OTNER IN 1989.

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