ML20128N477

Summary of Operating Reactors Events 850515 Meeting.Div Directors or Representatives Briefed on Events Occurring Since 850507 Meeting.Assignment of Followup Review Responsibilities Discussed.Attendance List Encl

ML20128N477
Person / Time
Site:	Nine Mile Point, Summer, Columbia, Ginna, Quad Cities, FitzPatrick, 05000000
Issue date:	05/22/1985
From:	Crutchfield D Office of Nuclear Reactor Regulation
To:	Thompson H Office of Nuclear Reactor Regulation
References
NUDOCS 8506030289
Download: ML20128N477 (18)

Text

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y_4 MAY 2 21985 MEMORANDUM FOR:

Hugh L. Thompson, Jr., Director Division.of Licensing FROM:

Dennis M. Crutchfield, Assistant Director for Safety Assessment, DL

SUMMARY

OF THE OPERATING REACTORS EVENTS MEETING ON MAY 15, 1985 On May 15, 1985, an Operating Reactor Events meeting was held to brief the Office Director, the Division Directors.and their representatives on events which occurred since our last meeting on May 7,1985. The list of attendees is included as Enclosure 1.

The events discussed and the significant elements of these events are presented in Enclosure 2.

In addition, the assignment of follcw-up review responsibility was discussed. The assignments made during this meeting and the status of previous assignments are presented in Ericlosure 3.

Completion dates have been assigned for items in Enclosure 3.

Each assignee should review Enclosure 3 with regard to their respective responsibilities and advise ORAB if the target completion date cannot be met.

If an assignee has any questions, please contact D. Tarnoff, x29526.

Dennis M. Crutchfield, Assistant Director for Safety Assessment, DL

Enclosures:

DISTRIBUTION As Stated Central Files NRC POR ORAB Rdg cc w/ enc 1:

ORAB Members See next page I:DL A

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H. Denton G. Lainas

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R. Bernero-P. Baranowski, RES J. Knight E. Rossi, IE T. Speis.

R. Hernan C. Heltemes F. Schroeder c

'T.~Novak G.-Knighton W. Russell D. Silver J. Taylor J. Lyons E. Jordan D. Brinkman F. Rowsome-E. Weiss W. Minners R. Baer L. Shao E. Adensam T.-Ippolito C. Miller S. Varga H. Abelson j

J. Zwolinski R. Bevan E. Sullivan J. B. Hopkins D. Beckham

.H. Bailey G. Edison R. Hermann K. Seyfrit D. Vassallo T. Murley, R-I J. Nelson Grace, R-II t

J.-Kepper, R-III R. D. Martin, R-IV I

J. B. Martin, R-V R. Starostecki, R-I R. Walker, R-II C..Norelius, R-III l

R. Denise, R-IV i-f D. Kirsch, R-V e

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ENCLOSURE 1 LIST OF ATTENDEES

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OPERATING REACTORS EVENTS BRIEFING MAY 15, 1985 f

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'D. Tarnoff, NRR/0RAB S. Rubin, AEOD/ROAB e

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0. P. Gormley,.VPB/IE P. Lam, AE0D/ROAB M. Caruso, NRR/0RAB K. Seyfrit, AE0D

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W. Swenson, NRR/0RAB M. Chiramal, AE0D J. Hannon, NRR/0RAB M. Virgilio, NRR/PPAS P. J. Kang, NRR/PSB/ DST J. T. Beard, ORAB H. Abelson, DL/0RB#2 R. Riggs, SPEB/ DST D. Vassallo, DL/0RB#2 I. Villaiva, IE/EAB t

J. Lyons, DL J. Glitter, IE/EAB S. Black, DL H. Denton, NRR D. Crutchfield, DL H. Thompson, NRR/DL D. Beckham, DHFS R. Bernero, NRR/DSI y

R. Bevan, DL/0RB#2 E. Rossi, IE/DEPER/EAB B. Long, DL/0RB#2 E. Jordan, IE T. Dunning, TSRG T. M. Novak, NRR/DL

.R.'Singh,IE/DEPER/EAB G. Lainas, NRR/DL E. Weiss, IE/DEPER/EAB F. J. Miraglia NRR/DL H. Bailey, IE/DEPER/EAB

.1. P. Knight, NRR/DE S. Schwartz, IE/DEPER G. Holahan, NRR/DL F. Manning, RES/DRA0/RRAB R. Wessman, NRR/DL f

B.. Wright,DE/EQB G. E. Edison, NRR/PPAS L

D. Fieno. DSI/CPB

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i OPERATING REACTOR EVENTS BRIEFING MAY 15, 1985 GINNA FOST-LOCA CHARCOAL FILTERS POTENTIALLY INOPERABLE FITZPATRICK SHUTDOWN MARGIN DEMONSTRATION PROBLEMS QUAD CITIES 1/2 ELECTRICAL POWER TRANSIENT AND PLANT ELECTRICAL SYSTEM INTERACTION

. SUMMER LOSS OF BOTH EMERGENCY DIESEL GENERATORS

' SUMMER PREMATURE CRITICALITY - SECOND OCCURRENCE i

WNP-2 REACTOR VESSEL PARTIAL DRAINDOWN NINE MILE PT, 1 CPACKING IN CONTAINMENT SPRAY HEAT ExCHANGERS k

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DINNA - POST - LOCA CHARC0AL FILTERS POTENTIALLY INOPERABLE MAY 6, 1985 (W. SWENSON,-NRR) i r

PROBLEM - PORTIONS OF CHARCnAL FILTER DISCHARGE DUCTS MAY FLOOD FOLLOWING A LOCA

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SAFETY SIGNIFICANCE - POTENTI AL LOSS OF 2 0F I4 FAN COOLER UNITS AND BOTH CHARC0AL FILTERS UNDER ACCIDENT CONDITIONS.

PROBLEM DISCOVERED BY LICENSEE ANALYSIS, VERIFIED BY CONTAINMENT ENTRY ~.

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DESIGN DEFICIENCY HAS EXISTED FOR LIFE OF PLANT.

CORRECTIVE ACTIONS - OPEN MANWAY AND PIN OPEN PRESSURE RELIEF DAMPERS IN DISCHAPGE DUCT.

MODIFICATION OF k

DUCTWORK IS BEING CONSIDEPED AS A PERMANENT FIX.

i MAY BE PROPOSED TO AE0D AS AN ABNORMAL OCCURRENCE OR "0THER EVENT OF INTEREST."

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FITZPATRICK - SHUTDOWN MARGIN DEMONSTRATION PROBLEMS MAY 3 AND 6, 1985 (H. ABELSON, NRR)

PLANT IN COLD SHUTDOWN -- REFUELING OUTAGE.

MAY 3 -- SDM TEST TERMINATED -- SOURCE PANGE COUNT TPIPLED.

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MAY 6 -- SDM TEST REPEATED AFTER DISCUSSIONS WITH GE --

ALL (4) SRM'S REACHED 105 C/S, IRM'S ON SCALE -- TEST TERMINATED.

LICENSEE SAYS MAY 6 TEST DEMONSTRATED TECHNICAL SPECIFICATION MARGIN (0.44%) WAS MET, BUT NOT DESIGN MARGIN (1,1%).

REGIONAL EVALUATION INDCATES THAT TESTS WERE CONDUCTED ACCORDING TO PROCEDURES.

NRC CONCERNS:

(1) ADEQUACY OF TS SDM DEMONSTRATION 4

(2) POSSIBLE CORE ANOMOLY (3)

STAFF REVIEW OF RECORDER TRACES INDICATES CRITICALITY WAS PROBABLY ACHIEVED DURING MAY 6 TEST.

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LICENSEE HAS RE-VERIFIED CORE LOADING -- WILL D0 IN-SEQUENCE TEST NEXT WEEK -- GE DOING QA ON CALCULATIONS.

REGION I SPECIALIST SENT TO SITE TO REVIEW DATA, TRACK f

LICENSEE ACTIVITIES, OBSERVE TEST.

f SIMILAP EVENT FOR QUAD CITIES LAST YEAR -- CONCLUDED NO PHYSICAL ABNORMALITY OR CALCULATION ERROR BUT ANALYTICAL UNCERTAINTY IN MODELING LOCAL FUEL CONFIGURATION.

QUAD CITIES UNITS 1 AND 2 - ELECTRICAL-POWER TRANSIENT I

AND PLANT ELECTRICAL SYSTEM INTERACTION MAY 7, 1985 (R. BEVAN, NRR)

UNIT 1 AT NEAR 100% POWER; UNIT 2 IN REFUELING OUTAGE, UNIT 2 DG OUT OF SERVICE FOR MAINTENANCE.

WORKMEN ACCIDENTLY SHORTED 345 KV LINE FEEDING UNIT 2 STARTUP XFMR.

i SHARED DG AUT0 STARTED AND ENERGIZED ONE DIVISION OF UNIT 2.

ELECTRICAL TRANSIENT PROPAGATED THROUGHOUT UNIT 1.

UNIT 1 EXPERIENCED LOSS OF ONE RPS BUS AND INSTRUMENT BUS, t

RESULTING IN SCRAM OF UNIT 1 (HIGH WATER LEVEL RESULTED FROM FW REGULATOR VALVE WHICH STAY!.D FULLY OPEN DURING POWEP k,

REDUCTION).

POTENTIAL SAFETY CONCERN IS THE DEGREE OF INTERACTION BETWEEN j

THE TWO UNITS.

REGION lli REVIEWING LICENSEF'S EVENT ANALYSIS AND PLANS FOR f

UNIT 1 RESTART.

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SUMMER - LOSS OF BOTH EMERGENCY DIESEL GENERATORS MAY 8, 1985 (J, T. BEARD, NRR)

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PLANT IN HOT STANDBY, IN 3-DAY EDG TEST CYCLE, INTERIM TECHNICAL SPECIFICATION CHANGE (LESS TESTING)

UNDER REVIEW 7:30 P.M.

"A" EDG TEST FAILURE, ENTER 72-HOUR ACTION STATEMENT 7:50 P.M.

"B" EDG ENGINE FAILLME, ENTER 2-HOUR ACTION STATEMENT i

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"B" EDG -' WATER IN #1 CYLINDER, LEAK AT FUEL INJECTnP NO' APPARENT GENERIC IMPLICATIONS i

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S SUMMER - PREMATURE. CRITICALITY - SECOND OCCURRENCE MAY 11, 1985 (J. B. HOPKINS, NRR)

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PREVIOUS PREMATURE CRITICALITY - FEBRUARY 28, 1985 ON MAY 11, 1985, CRITICALITY ACHIEVED ON ROD CONTROL BANK C INSTEAD OF BANK D BELOW ROD INSERTION LIMIT IN TECHNICAL SPECIFICATIONS REACTOR SHUTDOWN BY EMERGENCY BORATION REGION ll HAS'SENT A SPECIALIST TO-THE SITE AND IS f

PERFORMING A COMPREHENSIVE FOLLOWUP t

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WNP REACTOR VESSEL PARTIAL DRAINDOWN MAY 7, 1985 (H. BAILEY, IE)

PLANT IN COLD SHUTDOWN FOR MAINTENANCE OUTAGE.

i OPERATOR OPENED BOTH SUCTION VALVES ON LOOP A RHR WHICH

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CREATED.A DPAIN PATH FROM RV TO SUPPRESSION POOL.

SHUTDOWN COOLING AUTO ISOLATED ON LEVEL 3, SCRAM SIGNAL WAS GENERATED.

NO SAFETY INJECTION.

SCRAM DISCHARGE VOLUME VENT AND DRAIN VALVES DID NOT AUTOMATICALLY CLOSE.

FUSES WERE REMOVED FOR UNRELATED l

MAINTENANCE ACTIVITY.

l A PREVIOUS DRAINDOWN OCCURRED ON AUGUST 23, 1984.

INADVERTENT DRAINDOWNS MAY INDICATE POOR OPERATIONAL

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4 PROCEDURES HAVE BEEN REVISED.

OPERATORS RETRAINED.

WNP-2 INTERNAL STUDY HAD RECOMMENDED THAT INTERLOCKS BE INSTALLED TO PRECLUDE THIS EVENT.

APPLICABLE TO BWRS 3 THROUGH 6.

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IN 84-81, NOVEMBER 16, 1984, DISCUSSES SIMILAR BWR f g

DRAINDOWN EVENTS.

THIS EVENT STILL UNDER dVALUATION, j

NINE MILE POINT UNIT 1 - CRACKING IN CONTAINMENT SPRAY HEAT EXCHANGER WELDS MAY 7, 1985 (R, HERMANN. NRR)

NINE MILE POINT 1 HAS FOUR 100% CAPACITY CONTAINMENT SPRAY l

HEAT EXCHANGERS USED TO COOL TORUS WATER FOR POST-LOCA CONTAINMENT SPPAY.

THRU-WALL CRACK IDFNTIFIED ON WATER BOX OF ONE OF CONTAINM SPRAY HEAT EXCHANGERS DURING ROUTINE SURVEILLANCE.

CRACK IN SECOND CONTAINMENT SPRAY HX IDENTIFIED MAY 8, 1985 (ENTERED 7-DAY LCO, AS FACILITY OPERATING AT 100%)

VISUAL AND SURFACE INDICATIONS (ON WATER BOX' SIDE)

IDENTIFIED ON REMAINING TWO CONTAINMENT SPRAY HEAT

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EXCHANGERS.

REMEDIAL REPAIRS IN PROGRESS TO PRECLUDE GROSS STRUCTURAL FAILURE OF HXS.

REPAIRS MAY NOT MEFT' APPLICABLE ASME CODE REQUIREMENTS.

STAFF REVIEWING EMERGENCY RELIEF REQUEST (LCO EXPIRES 6:00 P.M. ON MAY 15, 1985).

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ENCLOSURE 3 INCOMPLETE ITEMS To Be Meeting Responsible Task Completed i

Date Branch-Description By:

Comment 8/7/84 DL/PM

~ Determine if Velan (PORV) 5/31/85 In progress (Salem) block valve qualified to close against 7/25/84 steam blowdown ~ transient

-at Salem'2. -Check EPRI Test Program results 8/7/84' DL/0RAB Coordinate NRR review 5/31/85 In progress of. Region _I report on Susquehanna 2 Station Blackout; setup meeting to decide followup actions l

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10/16/84 ORAB/IE.

Follow-up briefing 5/31/85 In progress after.cause of Palisades RCP-failure-and generic implications' determined h

t' 1/3/85 DL/PM Find out about existence 5/31/85 In progress i

Susquehanna

-of widespread potential 1

maintenance problem or CRD air system contamination 1/3/85 DL/PM Determine if a change in 5/31/85 ICSB reviewing

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ORAB Tech Specs should be licensee's considered in view of submittal for Susquehanna scram Tech. Specs.

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0 1 1 To Be Meeting-Responsible Task Completed Date Branch

. Description By:

Coment

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.-1/3/85 '

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. Summarize B&W licensing 5/31/85 In progress

~(P.Kadambi) responses to questions subsequent to Rancho Seco j

loss of NNI event.and present at follow-up 0R Events briefing 1

1/3/85 ICSB.

Consider need for 5/31/85 ICSB is i

F.' Rosa additional. requirements considering on alarms / annunciators Oconee 1 loss i

of annunciators (4/25/85)in analysis of requirements 1/3/85 IE Evaluate incident response -5/31/85

.In progress criteria concerning loss of plant annunciators 1/3/85 IE Prepare Information Notice 5/31/85 In progress regarding degradation of safety injection pumps due

.to boron. crystallization 1/17/85 IE/0RAB Continue review of 5/31/85 In progress Sequoyah and North Anna trip breaker failures for preparation of Information Notice and determination of need for additional action 5/07/85 DL/PM Follow-up briefing after 7/7/85 L

Catawba 2 evaluation of overpress.

effects on various systems and corrective actions.

To Be.

' Meeting Responsible ~

Task Completed i

Date

_ Branch Description By:

Comment i

5/07/85 -DL/PM Schedule meeting with R-II 7/7/85 Catawba 1/2 and DHFS (with licensee ~if appropriate) to evaluate-operator activities

5/07/85 ORB)1 D'iscuss with R-I the 7/7/85 management aspects of, recent events at Salem 5/07/85 0RAB/DE

- Review SGOG _ letter on eddy 6/7/85 current testing issue, in

-view of Millstone 2 findings 5/15/85-DL/0RAB

-Determine applicability to 5/31/85 Ginna.

other plants and if appropriate prepare.

draft IE Notice. Check TMI-1 for similar issue.

5/15/85 DL/PM Follow-up results of 7/15/85 CPB licensee shutdown margin Fitzpatrick-tests and regional evaluation. Followup briefing if appropriate.

5/15/85 DL/PM Follow-up results of 7/15/85

'CPB regional evaluation of Summer premature criticality.

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