ML20006C204
| ML20006C204 | |
| Person / Time | |
|---|---|
| Site: | Dresden  |
| Issue date: | 01/25/1990 |
| From: | Haughney C Office of Nuclear Reactor Regulation |
| To: | Rossi C Office of Nuclear Reactor Regulation |
| References | |
| GL-89-13, OREM-90-002, OREM-90-2, NUDOCS 9002070096 | |
| Download: ML20006C204 (14) | |
Text
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O January 25.-1990 j
f MEMORANDUM FOR:
Charles E. Rossi, Director Division of Operational Events Assessment FROM:
Charles J. Haughney, Chief L
Events Assessment Branch Division of Operational Events Assessment
SUBJECT:
THE OPERATING REACTORS EVENTS MEETING January 24, 1990 - MEETING 90-02 On January 24, 1990, we conducted an Operating Reactors Events meeting (90 02 to brief senior managers from NRR, AEOD, RES, Commission staff, and regional offices on selected events that occurred since our last meeting on Jannuary 17, 1990. lists the attendees.
, presents the significant elements of the discussed events. contains a summary of reactor scrams for the week ending 01/21/90. No significant events were identified for input into the NRC performance indicator program.
4-Oristual sipe -
charlen y' H54hr Charles J. Haughney, Chief Events Assessment Branch Division of Operational Events Assessment
Enclosures:
As stated cc:w/ Encl.:
See Next.Page DISTRIBUTION M,
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,s January 25, 1990 MEMORANDUM FOR:
Charles E. Rossi, Director Division of Operational Events Assessment FROM:
Charles J. Haughney, Chief Events Assessment Branch Division of Operational Events Assessment-i-.
SUBJECT:
THE OPERATING REACTORS EVENTS MEETING January 24, 1990 - MEETING 90-02 On January'24, 1990, we conducted an Operating Reactors Events meeting l
(90-02 to brief senior managers from NRR,'AE00, RES, Commission' staff, and 1
regional offices on. selected events that occurred since our last meeting 1
on January 17, 1990. -Enclosure 1 lists the attendees. presents the significant elements of the discussed events. contains a summary of reactor scrams for the week ending-01/21/90.
No-significant events were identified for input into the NRC performance indicator program.
s Charles-J. Hau ney, Chie Events Assessment Branch
]
Division of Operational Events Assessment j
1
Enclosures:
~
As stated h
l I
cc w/ Encl.:
L See Next Page 1
.e
[q.
k' ENCLOSURE 1 LIST OF ATTENDEES-OPERATING REACTORS EVENTS BRIEFING (9C 92)
January 24, 1990 NAME ORGANIZATION NAME ORGANIZATION V. Benaroya AEOD/DSP C. Berlinger NRR/DOEA T. Ross
.NRR/PD3-2 G. Gears NRR/TVA W. ' Tros kos ki OE R. Perfetti OE J. Rogge-OED0 J. Sharkey OEDO S. Peterson SECY P. Bobe AE0D/DSP P. Daranowsky
'NRR/D0EA C. Haughney NRR/00EA C. Hehl-RII L. Norrholm OCN/KC R. Kendall NRR/D0EA C. Thomas NRR/DLPQ J. Guttmann OCM/FR-B. Siegel' NRR/PD3-2 W. Minners RES/DSIR E. Rossi NRR/D0EA e-G. Marcus OCM/KR R. Benedict NRR/00EA V._Hodge NRR/00EA' N. Chiramal AEOC/ROAB J. Carter
_NRR/DOEA M. Reardon NRR/00EA F. Witt NRR/DET t
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? 3s ENCLOSURE 2l t
i OPERATING REACTORS EVENTS BRIEFING 90-02 EVENTS ASSESSMENT BRANCH-l LOCATION:-
12B-11; WHITE FLINT-WEDNESDAY, JANUARY 20 1990, 11:00 A,M.
- DRESDEN UNIT 2 LOSS OF 0FFSITE-POWER-(AIT UPDATE)
GENERIC ISSUE NEW SERVICE WATER SYSTEM-B10F0VLING AGENT, ZEBRA MUSSEL 4
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- [
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DRESDEN UNIT 2-LOSS OF 0FFSITE POWER JANUARY 16, 1990-PROBLEM' LLOSS OF 0FFSITE-POWER AND MULTIPLE EQUIPMENT FAILURES, CAUSE
' FAILURE 0F THE RESERVE AUXILIARY TRANSFORMER, WHICH FAILED SHORTLY AFTER CONDENSATE B0OSTER PUMP 2D TRIPPED (PUMP MOTOR CAUGHT FIRE).
LICENSEE IS-lNVESTIGATING BOTH FAILURES,
-SAFETY SIGNIFICAN'CE-LOSS 10F 0FFSITE-POWER EVENT WAS COMPLICATED BY MULTIPLE EQUIPMENT.
ANOMALIES,
. POWER TO EMERGENCY BUSES WAS PROVIDED BY THE EMERGENCY.
DIESEL GENERATORS'UNTIL OFFSITE POWER WAS RESTORED, DISCUSSION'-
o--CONDENSATE B00 STER PUMP 2D MOTOR BURNED -(BREAKER TRIPPED),
o FEEDWATER-PUMPS "A" AND "C" TRIPPED ON LOW SUCTION; PRESSURE, o AUTOMATIC REACTOR TRIP ON VESSEL LOW WATER LEVEL, J
'o FEEDWATER PUMP "A" WAS MANUALLY RESTARTED, o AUTOMATIC TURBINE. TRIP'0CCURRED.ON HIGH VESSEL LEVEL.
o RESERVELAUXILIARY TRANSFORMER FAILED,
,o> UNIT 2 DIESEL GENERATOR MANUALLY STARTED AND LOADED.
SWING DIESEL GENERATOR AUTOMATICALLY STARTED AND LOADED, fo PLANT C00LDOWN TO COLD SHUTDOWN ACHIEVED USING THE ISOLATION
-CONDENSER AND HPCI, MAKEUP PROVIDED USING RWCU-AND CRD PUMPS, o SHUTDOWN COOLING LOOPS "A" AND "B" PLACED IN SERVICE.
+
o 0FFSITE POWER RESTORED TO UNIT 2 SAFETY BUSES VIA CROSSTIE TO
~
. UNIT 3.
AIT:
YES CONTACT:
J. CARTER SIGEVENT:
YES
REFERENCE:
10 CFR 50.72 # 17566 AND MORNING REPORT 01/17/90 1
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i DRESDEN UNIT _2 90-02 EQUIPMENT FAILURES '
o CONDENSATE'B00 STER' PUMP 2D MOTOR BURNED (CAUSE UNKNOWN).
o RESERVE-AUXILIARY TRANSFORMER (TRIPPED ON HIGH INTERNAL PRESSURE).
-o OUTB0ARD MSIV "C" DRIFTED CLOSED.
(DC C0ll 0 PEN) o ELECTROMATIC RELIEF VALVE 2B CONTROL SWITCH (SHORT IN BULB SOCKET).
o MAIN GENERATOR OUTPUT BREAKERS (DID NOT AUTO OPEN).
- o. SHUTDOWN COOLING LOOP "B" PUMP DISCHARGE VALVE NOT OPERABLE FROM CONTROL' ROOM.
(FRACTURED KEY, AND MANUAL CLUTCH NOT ALIGNED PROPERLY.)
FOLLOWUP l
i AN AIT, DISPATCHED TO THE SITE ON JANUARY 17, 1990, IS PREPARING
. A REPORT.
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GENERIC ISSUE fi NEW SERVICE WATER SYSTEM BIOFOULING-AGENT, ZEBRA MUSSEL-
' PROBLEM LSERVICE WATER INTAKES MAY BE--CLOGGED BY BIOF0VLING AGENTSi ZEBRA' MUSSEL!MAY:AFFECTEFRESH WATER-CO0 LED' PLANTS, i
CAUSE ZEBRA' MUSSELS INTRODUCED T0 LAKE ERIE BY BALLAST PURGES-0F g
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.EUROPEANsSHIPS, i
SAFETY SIGNIFICANCE POTENTIAL. INSUFFICIENT CAPACITY.FOR TRANSFERRING REACTOR HEAT T0:
DISCUSSION o' BULLETIN 81-03
- -ASIATIC CLAM
- -BLUE' MUSSEL
--lAMERICAN!0YSTER orSE"C.RAL INFORMATION NOTICES 0: GENERIC ISSUE 51 ON--IMPROVING RELIABILITY OF SERVICE WATER r
- SYSTEMS, o AE0D CASE STUDY.ON FAILURES AND-DEGRADATIONS.OF SERVICE WATER E
- SYSTEMS,
- o. INSPECTION RESULTS IN REGION II SHOWED DEGRADED SERVICE WATER
- SYSTEMS, L
o GENERIC: LETTER 89-13 L
o INTRUSION OF-ZEBRA. MUSSELS IN LAKE ERIE IN SUMMER 1988.
L o CITIZEN LETTER ALERTED STAFF TO ZEBRA MUSSEL, CONCERNED ABOUT PERRY L
CONCERNED ABOUT DIFFERENCES BETWEEN ASIATIC CLAMS AND ZEBRA l
MUSSELS o-IN 89-76' L
CONTACT:
V. H0DGE
REFERENCES:
INFORMATION NOTICE 89-76 (ZEBRA MUSSELS) AND GENERIC L
LETTER 89-13 (SERVICE WATER PROBLEMS)
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TGEN,ERIC ISSUE L ZEBRA MUSSELS 90-02 oNRC. INT 5RACTION'WI'HOTHERGOVERNMENTAGENCIES, T
INFORMED EPA 0F GENERIC' LETTER.89-13 (INFORMAL) i INFORMED INTERNATIONAL CONFERENCE OF GENERIC LETTER 89-]3 i
U.Sc FISil AND WILDLIFE SERVICE ONTARIO MINISTRY OF ENVIRONMENT o' WORKSHOPS TO GIVE FURTHER GUIDANCE (SUPPLEMENT TO GENERIC LETTER 89-13).
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' CONTROL MUSSEL MAY BE CONTROLLED WITH HEAT, SALT WATER, AND CHEMICALLY TREATED WATER, BUT THE ADULT BIOMASS MUST BE MANUALLY REMOVED.
FOLLOWU'P o COMMITMENT' RESPONSES TO GENERIC LETTER 89-13 ARE COMING IN NOW, o-CONFIRMATION RESPONSES ARE DUE AFTER FIRST REFUELING 0UTAGE AFTER 9 MONTHS AFTER THE DATE OF GENERIC LETTER 89-13 (APRIL 1990 - APRIL 1992),
o REGIONS WILL INSPECT BY SAMPLE AUDITS..
- o RESEARCH UNDERWAY BY OTHER.0RGANIZATIONS.
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1EACTOR BCRM $UMMARY -
, ~
NEEK ENDl'3 01/21/90 a
+-
=
ENCL.05URE.3'
.s.
- 1. PLMT SPECIFIC DATA '
b UNITPONERSIGNAL=CAUSE-'
-COMPLI-.
YTD-. Yip YT0;
.2
- MTE.'
SITE; p
CA110NS AB0VE DELON 101AL -
2
?
15% 15%
1
' 01'/16/90~DRESDEN 2-99 M EDUlPMENT fES >
2 0
2
~I 01/10/90 BYRON 2
99 A EDU!PMENT' NO 1
0 1
01/10/90 !!DN 2 ; 40 M '
EQUIPMENT' NO 1
0-1 NO -
'i -
0~
1 101/18/90 MILLSTONE.
-- 3' 100 M EOUIPMENT
'01/19/90 DCONEE
-3 100 A
? EQUIPMENT NO -
'1:
0 1
L 01/19/90 FIT! PATRICK 1 100 A.
PERSONNEL
. NO
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0-1' i
1
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1 P
SUMARY OF COMPLICAi!ONS~
~
- SITE UNii COMPLICAT10NS DRESDEN-
'2 RESERVE AUI TRANSFORMER TRIPPED.. DUTBOARD MSIV DRIFTED CLOSfD. SHU1DONN COOLIN6 LOOP PUMP DISCHARGE VALVE NOT OPERABLE FROM CONTROL ROOM.
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, - II.- COMPARISON OF WEEKLY STATISTICS WITH ': INDUSTRY: AVERAGES
' SCRAMS /FOR WEEK [ENDING
,e, 2
-01/21/90:
- g o
' SCRAM CAUSE POWERi NUMBER
'1989-1988
- 1987-1986 1985 OF WEEKLY =
WEEKLY WEEKLY WEEKLY ~-WEEKLY
-SCRAMS (5)-
AVERAGE AVERAGE AVERAGE AVERAGE AVERAGE' YTD-(3)(4).
(8)(9)
- EPOWER >15%.
- EQUIP. RELATED
>15%
5 3.3-3.1 3.91 4.3 5.4
'PERS.'RELATED(6) >15%
1 1.3 1.0 1 ~. 3 1.8' 2.0 cOTHER(7) c '> 15%
0 0.0 0.5-1.2 0.4'
'O.6 L**JSubtotal **-
6:
4.6-4.,6 -
6.4 6.5 8.0
- POWERi<15%
~
1.2 1.4
'1.3
-EQUIP. RELATED
<15%
0.
0.0 0.5
,';PERS.?RELATED
- <15%
0 0.0 0.3 0.6 0.8 0.9
~ OTHER-
<15%
O O.0 0.1-0.3 0.2 0.2
- Subtotal-**1
+
O O.0 0.9 2.1 2.4
- 2. 4
- Total-***-
6 4.6' 5.5 8.5 8.9 10.4 MANUAL VS AUTO ~ SCRAMS TTYPE NUMBER l989 1988 1987 1986 1985 OF WEEKLY WEEKLY WEEKLY -WEEKLY WEEKLY:
SCRAMS AVERAGE AVERAGE AVERAGE AVERAGE AVERAGE' YTD MANUAL SCRAMS 3
1.3 1.0
- 1. '4 1.0 1.0 AUTOMATICcSCRAMS 3
3.3 4.5 7.0 7.9
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i OEAB SCRAll DATA i
Y
. Manual and Automatic. Scrams for 1986
'461 Manual and Automatic Scrams-for 1987 ----------------- 439
' Manual and Automatic Scrams for 1988'----------------- 287
. i.
I Manual and Automatic Scrams for 1989 ----------------- 244 1
L ManualandAutomaticScramsfor1990(YTD01/21/90)-- 15
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PLANT SPECIFIC DATA BASED;0N INITI AL' REVIEW OF 50.72. REPORTS E
FOR Tile WEEK OF INTEREST.
PERIOD IS MICNIGHT. SUNDAY THROUGH
' MIDNIGHT SUNDAY. SCRAMS ARE DEFINED AS' REACTOR Pr3TECTIVE ACTUATIONS WHICH RESULT IN RCD MOTI0h, AND EXCLUDE PLAliNED '
TESTS OR SCRAMS AS P/,RT OF PLANNED SHUT 00WN IN ACCORDANCE
-i
-WITH A PLANT PROCEDURE. THERE ARE 111 REACTORS HOLDING AN OPERATING LICENSE.
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COMPLICATIONS: REC 0VERY COMPLICATED BY EQUIPMENT FAILURES OR PERSONNEL-ERRORS UNRELATED'TO CAUSE OF SCRAM.
r 3.
PERSONNEL ~RELATED PROBLEMS INCLUDE HUMAN ERROR, PROCEDURAL DEFICIENCIES, AND MANUAL STEAM GENERATOR LEVEL CONTROL
-t PP.0BLEMS.
4.
"0THER" INCLUDES AUTOMATIC SCRAMS ATTRIBUTED TO ENVIRONMENTAL-CAUSES (LIGHTNING), SYSTEM DESIGN, OR UNKNOWN CAUSE.
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