ML20057A406
| ML20057A406 | |
| Person / Time | |
|---|---|
| Site: | Palisades  |
| 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) | |
Text
i 1
O autz nasa o(
i i
j 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 lists the attendees. presents the significant elements of the discussed events. 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:
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DOCUMENT NAME:
ORTRANS.KAG (G:KAG)
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1 930914O157 930720 i/
PDR ORG NRRB A
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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) i S.
Varga, NRR (14E4)
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.
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 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 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 N. HUNEMULLER NRR S. VARGA NRR I
S.
LONG NRR J.
CALVO NRR I
F.
GRUBELICH NRR D.
COE ACRS 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 1
TELEPHONE ATTENDANCE (AT ROLL CALL)
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 OPERATING REACTORS EVENTS BRIEFING 93-26 LOCATION:
10 B11, WHITE FLINT 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
93-26 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 OCCURRED DURING REFUELING OUTAGE.
- j CAUSE TO BE DETERMINED.
1 SAFETY SIGNIFICANCE PROGRAMMATIC BREAKDOWN.
l BACKGROUND ON TWO PREVIOUS OCCASIONS (SEPTEMBER 1988, AND FEBRUARY l
e 1992) FAs IN CORE LOCATION Z-11 WERE FOUND STUCK TO I
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 o
LICENSEE ENTERED A SCHEDULED 50 DAY REFUELING OUTAGE l
APPR0XIMATELY JUNE 4, 1993.
l i
CONTACTS:
W. DEAN, NRR/PDIII-1 AIT: YES~
J. RAMSEY, NRR/ DORS.
SIGEVENT: TBD
REFERENCES:
10 CFR 50.72 #25652, #25725,
- 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 e
ON JUNE 15, 1993, A CEA WAS LIFTED WHEN THE REACTOR VESSEL HEAD WAS REMOVED.
LICENSEE COMPLETED REFUELING ON JUNE 27, 1993.
ON JULY 1, 1993, LICENSEE IDENTIFIED A BROKEN FUEL PIN e
IN BOTTOM 0F REFUELING CAVITY TILT PIT WHILE LOWERING j
WATER LEVEL.
R0D IN THREE PIECES; FUEL PELLETS FROM l
ONE PIECE MISSING.
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 ON JULY 6, 1993, FA SAN 8 IN CORE LOCATION Z-11 e
REMAINED ATTACHED TO BOTTOM OF UGS DURING REMOVAL l
(PREPARATORY TO INSPECTION OF FA I-024).
i ON JULY 8, 1993, FA SAN 8 WAS FREED AND RETURNED TO ITS e
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 POSITIONED ON TOP 0F CORE.
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i l
PALISADES 93-26 e
LICENSEE IS ASSESSING CONDITION OF FA I-024 AND: ROOT CAUSE FOR FUEL R0D FAILURE, AND ASSESSING ROOT CAUSE OF j
FA STICKING TO UGS.
l e
LICENSEE HAS NO IMMEDIATE PLANS TO PERFORM 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.
FOLLOWUP e
REGION III SPECIAL INSPECTION TEAM DISPATCHED IN RESPONSE TO ATTACHED CEA EVENT.
e AIT DISPATCHED IN RESPONSE TO BROKEN FUEL ROD AND STUCK i
FA EVENT.
j REGION ISSUED CONFIRMATORY ACTION LETTER (CAL).
e e
PRELIMINARY AIT WORK INDICATES DEFICIENCIES IN FUEL HANDLING PROCEDURES, WORK PRACTICES, AND OVERSIGHT.
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i ENCLOSURE 3
' i l
REACTOR SCRAM i
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
l 07/11/93 SALEM 1 97 EA maintenance Error No 3
1 4
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- t2 Toer To Date (YTD) Totals include Events Within The Calender Year Indicated Dy The End Date of The specified Reporting Period ITS 10 Pope:1 07/19/93 4
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COMPARISON OF HEEKLY SCPW $1 ATISTICS 6f!TH INDUSTRY AVERAGES I
PERICE) ENDING 07/11/93 i
l NUMBER 1993 1992 1991*
1990*
W j
OF WEEKLY MEKLY.
WEEKLY WEKLY WECLY i
SCRAM CAUSE
$0 RAMS AVERAGE 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 h
DESIGN /INSTALLAT!fW ERROR
- O 0.1 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 0.1
.l CTNER*
0 0.0 0.2 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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