U.S. Nuclear Regulatory Commission Operations Center Event Reports For 04/28/95 - 05/01/95 ** EVENT NUMBERS ** 28733 28734 28735 28736 28737 28738 28739 28740 28741 28742 +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 28733 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: MILLSTONE REGION: 1 |NOTIFICATION DATE: 04/28/95 | |UNIT: [ ] [2] [ ] STATE: CT |NOTIFICATION TIME: 01:20 [ET]| |RX TYPE: [1] GE-3,[2] CE,[3] W-4-LP |EVENT DATE: 04/28/95 | +------------------------------------------------+EVENT TIME: 00:55[EDT]| |NRC NOTIFIED BY: DUBAY |LAST UPDATE DATE: 04/28/95 | |HQ OPS OFFICER: DICK JOLLIFFE +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |JACK DURR RDO | |AINB 50.72(b)(2)(iii)(B) POT RHR INOP | | |AIND 50.72(b)(2)(iii)(D) ACCIDENT MITIGATION | | | | | | | | | | | +-----+----------+-------+--------+--------------+--+--------+-----------------+ |UNIT |SCRAM CODE|RX CRIT|INIT PWR| INIT RX MODE |CURR PWR| CURR RX MODE | +-----+----------+-------+--------+-----------------+--------+-----------------+ | | | | | 2 | N N 0 REFUELING | 0 REFUELING | | | | | +-----+---------------------------------------------+--------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | -CHEMICAL ADDITION LINES CONNECTED TO RBCCW SYSTEM NOT SEISMICALLY MOUNTED- | | | | DURING A ROUTINE VISUAL PLANT INSPECTION WITH UNIT 2 IN A REFUELING OUTAGE, | | LICENSEE DISCOVERED THAT THE 3/4 INCH DIAMETER CHEMICAL ADDITION SYSTEM | | LINES ARE NOT SEISMICALLY MOUNTED. THESE LINES ARE CONNECTED TO BOTH | | TRAINS OF THE UNIT 2 REACTOR BUILDING CLOSED COOLING WATER (RBCCW) SYSTEM | | WHICH IS SEISMICALLY MOUNTED. THE ISOLATION VALVES BETWEEN BOTH TRAINS | | OF THESE TWO SYSTEMS ARE NORMALLY OPEN DURING ALL PLANT OPERATING MODES | | BECAUSE THESE MANUALLY OPERATED VALVES ARE INSTALLED IN A REMOTE LOCATION | | AND ARE NOT EASILY ACCESSIBLE TO PLANT OPERATORS. A SEISMIC EVENT COULD | | CAUSE A RUPTURE OF THE NON-SEISMICALLY MOUNTED CHEMICAL ADDITION LINES AND | | PROVIDE A LEAK PATH FROM THE RBCCW SYSTEM BACK THROUGH THE OPEN SYSTEM | | ISOLATION VALVES. | | | | LICENSEE CLOSED BOTH ISOLATION VALVES BETWEEN THESE TWO SYSTEMS. | | | | THIS CONDITION HAS EXISTED WHEN UNIT 2 WAS IN POWER OPERATIONS. | | | | LICENSEE IS DETERMINING CORRECTIVE ACTIONS WHICH INCLUDE SEISMICALLY | | MOUNTING THE CHEMICAL ADDITION SYSTEM, ATTACHING REACH RODS TO THESE | | MANUALLY OPERATED SYSTEM ISOLATION VALVES, REDESIGNATING THESE MANUALLY | | OPERATED SYSTEM ISOLATION VALVES AS NORMALLY CLOSED DURING ALL PLANT | | OPERATING MODES, AND REVISING APPROPRIATE DRAWINGS, PROCEDURES, DOCUMENTS, | | AND TRAINING MATERIALS. | | | | THIS EVENT HAS NO EFFECT ON UNITS 1 AND 3. | | | | LICENSEE NOTIFIED STATE AND LOCAL OFFICIALS AND THE NRC RESIDENT INSPECTOR. | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 28734 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: CATAWBA REGION: 2 |NOTIFICATION DATE: 04/28/95 | |UNIT: [ ] [2] [ ] STATE: SC |NOTIFICATION TIME: 02:49 [ET]| |RX TYPE: [1] W-4-LP,[2] W-4-LP |EVENT DATE: 04/27/95 | +------------------------------------------------+EVENT TIME: 23:44[EDT]| |NRC NOTIFIED BY: R. W. SMITH |LAST UPDATE DATE: 04/28/95 | |HQ OPS OFFICER: DICK JOLLIFFE +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |PAUL FREDRICKSON RDO | |ARPS 50.72(b)(2)(ii) RPS ACTUATION | | |AESF 50.72(b)(2)(ii) ESF ACTUATION | | | | | | | | | | | +-----+----------+-------+--------+--------------+--+--------+-----------------+ |UNIT |SCRAM CODE|RX CRIT|INIT PWR| INIT RX MODE |CURR PWR| CURR RX MODE | +-----+----------+-------+--------+-----------------+--------+-----------------+ | | | | | 2 | A N 0 HOT STANDBY | 0 HOT STANDBY | | | | | +-----+---------------------------------------------+--------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | - MAIN FEEDWATER SYSTEM ISOLATION WITH UNIT 2 IN MODE 3 (HOT STANDBY) - | | | | WITH UNIT 2 IN MODE 3 (HOT STANDBY), TECHNICIANS WERE TROUBLESHOOTING THE | | PROBLEM THAT CAUSED THE REACTOR TRIP OF 04/27/95 (EVENT #28731). | | | | THE 'A' REACTOR TRIP BREAKER WAS OPEN AND ITS ASSOCIATED REACTOR TRIP | | BREAKER INDICATING SWITCH WAS INDICATING "OPEN". | | | | TECHNICIANS REMOVED THE 'A' REACTOR TRIP BREAKER FROM ITS CUBICAL WHICH | | CAUSED THE ASSOCIATED REACTOR TRIP BREAKER POSITION INDICATION SWITCH TO | | CHANGE INDICATING STATE FROM "OPEN" TO "NEUTRAL". | | | | DURING TROUBLESHOOTING ACTIVITIES, TECHNICIANS EXERCISED THE SWITCH TO THE | | "OPEN" POSITION WHICH CAUSED A REACTOR TRIP SIGNAL AND A TRAIN 'A' MAIN | | FEEDWATER SYSTEM ISOLATION SIGNAL. | | | | THE MAIN FEEDWATER SYSTEM ISOLATED DUE TO THIS SIGNAL ALONG WITH A LOW Tave | | INDICATION SIGNAL. | | | | LICENSEE RESET ALL SYSTEMS TO NORMAL WITHIN 10 MINUTES. | | | | THE WATER LEVEL IN ONLY ONE STEAM GENERATOR DROPPED AS MUCH AS 5% NARROW | | RANGE WITHIN THIS 10 MINUTE PERIOD. | | | | LICENSEE IS CONTINUING TO DETERMINE THE CAUSE OF THE REACTOR TRIP. | | | | LICENSEE INFORMED THE NRC RESIDENT INSPECTOR. | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 28735 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: INDIAN POINT REGION: 1 |NOTIFICATION DATE: 04/28/95 | |UNIT: [ ] [3] [ ] STATE: NY |NOTIFICATION TIME: 05:59 [ET]| |RX TYPE: [2] W-4-LP,[3] W-4-LP |EVENT DATE: 04/28/95 | +------------------------------------------------+EVENT TIME: 04:40[EDT]| |NRC NOTIFIED BY: DAVE MOHRE |LAST UPDATE DATE: 04/28/95 | |HQ OPS OFFICER: DICK JOLLIFFE +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |JACK DURR RDO | |ADAS 50.72(b)(2)(i) DEG/UNANALYZED COND | | | | | | | | | | | | | | +-----+----------+-------+--------+--------------+--+--------+-----------------+ |UNIT |SCRAM CODE|RX CRIT|INIT PWR| INIT RX MODE |CURR PWR| CURR RX MODE | +-----+----------+-------+--------+-----------------+--------+-----------------+ | | | | | 3 | N N 0 HOT SHUTDOWN | 0 HOT SHUTDOWN | | | | | +-----+---------------------------------------------+--------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | - RELAY CONFIGURATION FOR AUTO START OF AFW PUMPS BLOCKS THE START SIGNAL - | | | | AT 0440 ON 04/28/95, DURING SURVEILLANCE TESTING, LICENSEE DISCOVERED THAT | | THE REACTOR PROTECTION SYSTEM, TRAIN 'B' TEST RELAY FOR THE #33 STEAM | | GENERATOR LOW-LOW WATER LEVEL AUTO START SIGNAL FOR THE AUXILIARY FEEDWATER | | PUMPS HAS AN INCORRECT CONTACT CONFIGURATION. | | | | IN THE PRESENT CONFIGURATION, THE RELAY BLOCKS THE AUTO START SIGNAL TO THE | | #31 AND #33 MOTOR DRIVEN AUXILIARY FEEDWATER PUMPS AND PARTIALLY BLOCKS THE | | AUTO START SIGNAL TO THE #32 STEAM DRIVEN AUXILIARY FEEDWATER PUMP ON A | | TRAIN 'B' START SIGNAL FROM THE #33 STEAM GENERATOR WHEN NOT IN THE TEST | | MODE. | | | | THIS RELAY WAS LAST REPLACED ON 04/29/92 WITH A SPARE RELAY ALREADY MOUNTED | | IN THE REACTOR PROTECTION RACKS. THE TEST FOR THIS REPLACEMENT RELAY | | TESTED ONLY ONE OF THE THREE FUNCTIONS PERFORMED BY THIS RELAY. DURING | | THIS TEST, THE RELAY WAS JUMPERED TO PREVENT AN ACTUAL START SIGNAL. | | | | THE SURVEILLANCE TEST FOR THIS RELAY HAS BEEN REVISED TO TEST ALL FUNCTIONS | | OF THIS RELAY. THIS CONDITION WAS DISCOVERED WHILE TESTING THIS RELAY | | USING THE REVISED TEST PROCEDURE. | | | | LICENSEE WILL REWIRE OR REPLACE THE RELAY. | | | | LICENSEE IS INVESTIGATING THE CAUSE OF THIS CONDITION. | | | | LICENSEE WILL INFORM THE NRC RESIDENT INSPECTOR. | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |OTHER NUCLEAR MATERIAL | |EVENT NUMBER: 28736 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |LICENSEE: AMERSHAM METAPHYSICS |NOTIFICATION DATE: 04/28/95 | | CITY: MIAMI REGION: 2 |NOTIFICATION TIME: 14:00 [ET]| | COUNTY: DADE STATE: FL |EVENT DATE: 04/28/95 | |LICENSE#: AGREEMENT: Y |EVENT TIME: 12:00[EDT]| | DOCKET: |LAST UPDATE DATE: 04/28/95 | | +-----------------------------+ | |PERSON ORGANIZATION| | |PAUL FREDRICKSON RDO | | |JOHN HICKEY EO | +------------------------------------------------+ROGER LANKSBURY R3DO | |NRC NOTIFIED BY: JERRY EAKINS | | |HQ OPS OFFICER: LEIGH TROCINE | | +------------------------------------------------+ | |EMERGENCY CLASS: NOT APPLICABLE | | |10 CFR SECTION: | | |NAGR AGREEMENT STATE | | | | | | | | | | | | | | +------------------------------------------------+-----------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | A SHIPMENT CONTAINING 2 CURIES OF MOLYBDENUM-99 WAS SENT FROM MIAMI TO | | CHICAGO AND WAS FOUND TO BE LEAKING UPON ARRIVAL. | | | | THE FLORIDA OFFICE OF RADIATION CONTROL REPORTED THAT AMERSHAM METAPHYSICS | | SHIPPED A PACKAGE CONTAINING 2 CURIES OF MOLYBDENUM-99 (WHICH IS USED AS A | | GENERATOR FOR TC-99m) FROM MIAMI TO CHICAGO VIA MEMPHIS, AND THE PACKAGE | | WAS FOUND TO BE LEAKING UPON ARRIVAL. AMERSHAM METAPHYSICS WAS BOTH THE | | SHIPPER AND THE CONSIGNEE. THE SHIPMENT LEFT MIAMI VIA A FEDERAL EXPRESS | | FLIGHT SOMETIME YESTERDAY AND ARRIVED IN CHICAGO TODAY. THE CONTAMINATION | | ON THE PACKAGE WAS IDENTIFIED APPROXIMATELY NOON TODAY. THE PACKAGE IS | | CURRENTLY LOCATED AT THE AMERSHAM METAPHYSICS OFFICE IN OAK PARK, ILLINOIS. | | | | THE FEDERAL EXPRESS DRIVER AND TRUCK THAT CARRIED THE SHIPMENT FROM THE | | AIRPORT WERE BOTH SLIGHTLY CONTAMINATED. THE PACKAGE WAS FOUND TO HAVE | | 100,000 DPM PER 100 CMý. THE DRIVER'S HANDS WERE FOUND TO HAVE 1,600 DPM | | PER 100 CMý, AND THE FEDERAL EXPRESS TRUCK WAS FOUND TO HAVE 6,200 DPM PER | | 100 CMý. FEDERAL EXPRESS IS CURRENTLY TRYING TO TRACK DOWN THE PLANE THAT | | CARRIED THE PACKAGE. THE PLANE WAS A FEDERAL EXPRESS PLANE AND DID NOT | | CARRY ANY PASSENGERS. | | | | STATE OF ILLINOIS HAS ALREADY CONTACTED THE FLORIDA OFFICE OF RADIATION | | CONTROL REGARDING THIS EVENT. | | | | *** UPDATE RECEIVED FROM FEDERAL EXPRESS (DR. PARKER) AT 16:45 (EDT) ON | | APRIL 28, 1995, BY BOB STRANSKY *** | | | | THE AIRCRAFT WAS LOCATED AND IS CURRENTLY ON THE GROUND AT DULLES. A | | CONFERENCE CALL WAS SUBSEQUENTLY CONDUCTED WITH THE NMSS EO (HICKEY), AN | | NMSS MATERIALS REPRESENTATIVE (BRACH), THE R2DO (FREDRICKSON), A REGION 2 | | MATERIALS REPRESENTATIVE (POTTER), AND A CONTRACTOR FROM FEDERAL EXPRESS | | (PARKER). | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 28737 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: SEQUOYAH REGION: 2 |NOTIFICATION DATE: 04/28/95 | |UNIT: [ ] [2] [ ] STATE: TN |NOTIFICATION TIME: 22:06 [ET]| |RX TYPE: [1] W-4-LP,[2] W-4-LP |EVENT DATE: 04/28/95 | +------------------------------------------------+EVENT TIME: 20:31[EDT]| |NRC NOTIFIED BY: PAT LEAHY |LAST UPDATE DATE: 04/30/95 | |HQ OPS OFFICER: LEIGH TROCINE +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |PAUL FREDRICKSON RDO | |ARPS 50.72(b)(2)(ii) RPS ACTUATION | | | | | | | | | | | | | | +-----+----------+-------+--------+--------------+--+--------+-----------------+ |UNIT |SCRAM CODE|RX CRIT|INIT PWR| INIT RX MODE |CURR PWR| CURR RX MODE | +-----+----------+-------+--------+-----------------+--------+-----------------+ | | | | | 2 | A/R Y 99 POWER OPERATION | 0 HOT STANDBY | | | | | +-----+---------------------------------------------+--------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | AUTOMATIC REACTOR TRIP ON LOW-LOW STEAM GENERATOR LEVEL. | | | | UNIT 2 EXPERIENCED AN AUTOMATIC REACTOR TRIP ON LOW-LOW STEAM GENERATOR | | LEVEL. ALL RODS FULLY INSERTED FOLLOWING THE TRIP. THE REACTOR FIRST OUT | | INDICATION WAS NO. 1 STEAM GENERATOR LEVEL LOW-LOW, AND THE TURBINE FIRST | | OUT INDICATION WAS "A" AND "B" MAIN FEEDWATER TRIPPED. THE GENERATOR | | NEUTRAL OVERVOLTAGE RELAY AND THE 100% STATOR GROUND RELAY WERE ALSO PICKED | | UP, WHICH GAVE AN INSTANTANEOUS GENERATOR OUTPUT BREAKER OPEN INDICATION AT | | THE SAME TIME OTHER FIRST OUT INDICATIONS WERE RECEIVED. THERE IS NORMALLY | | A 30-SECOND TIME DELAY. THE LOWEST STEAM GENERATOR LEVELS RECEIVED WERE | | 47%, 48%, 41%, AND 54% WIDE RANGE FOR THE NO. 1, 2, 3, AND 4 STEAM | | GENERATORS, RESPECTIVELY. | | | | DURING SHUTDOWN EOP USAGE, T(ave) DIPPED TO 539øF. THIS REQUIRED EMERGENCY | | BORATION BECAUSE T(ave) WAS LESS THAN THE 540øF LIMIT. T(ave) WAS LESS | | THAN 540øF FOR LESS THAN 5 MINUTES. | | | | THE PLANT IS CURRENTLY STABLE WITH T(ave) AT 547øF AND RCS PRESSURE AT 2235 | | PSIG. THE LICENSEE'S FORCED OUTAGE TEAM IS CURRENTLY EVALUATING THE PLANT | | RECOVERY ACTIONS. THE TEAM IS ALSO INVESTIGATING THE GENERATOR NEUTRAL | | OVERVOLTAGE RELAY AND THE 100% STATOR GROUND RELAY AS THE PROBABLE CAUSES. | | THERE WERE NO MAINTENANCE OR SURVEILLANCE ACTIVITIES OCCURRING AT THE TIME | | OF THE TRIP, AND THERE WAS NO STORM ACTIVITY IN THE AREA. | | | | THE RESIDENT INSPECTOR WAS NOTIFIED BY THE LICENSEE. | | | | *** UPDATE DATE\TIME:4/30/95 @ 0420 EDT BY:McGINTY *** | | THE LICENSEE FOUND A GASKET THAT CAME LOOSE AND FELL ACROSS THE ISOPHASE | | BUS DUCT BARS, CREATING A GROUND AND THE SUBSEQUENT GENERATOR/REACTOR TRIP. | | THE PROBLEM HAS BEEN CORRECTED, AND THE LICENSEE IS PREPARING TO RESTART. | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 28738 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: INDIAN POINT REGION: 1 |NOTIFICATION DATE: 04/29/95 | |UNIT: [ ] [3] [ ] STATE: NY |NOTIFICATION TIME: 15:48 [ET]| |RX TYPE: [2] W-4-LP,[3] W-4-LP |EVENT DATE: 04/29/95 | +------------------------------------------------+EVENT TIME: 13:27[EDT]| |NRC NOTIFIED BY: CARL SMYERS |LAST UPDATE DATE: 04/29/95 | |HQ OPS OFFICER: LEIGH TROCINE +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |JACK DURR RDO | |AESF 50.72(b)(2)(ii) ESF ACTUATION | | | | | | | | | | | | | | +-----+----------+-------+--------+--------------+--+--------+-----------------+ |UNIT |SCRAM CODE|RX CRIT|INIT PWR| INIT RX MODE |CURR PWR| CURR RX MODE | +-----+----------+-------+--------+-----------------+--------+-----------------+ | | | | | 3 | N N 0 HOT SHUTDOWN | 0 HOT SHUTDOWN | | | | | +-----+---------------------------------------------+--------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | UNPLANNED ESF ACTUATION DURING THE PERFORMANCE OF A SURVEILLANCE TEST WITH | | THE UNIT IN HOT SHUTDOWN. | | | | DURING THE PERFORMANCE OF A TRAIN "A" SAFETY INJECTION LOGIC FUNCTIONAL | | SURVEILLANCE TEST, AN UNPLANNED ESF ACTUATION OCCURRED DUE TO THE | | GENERATION OF AN INADVERTENT LOW PRESSURIZER PRESSURE SAFETY INJECTION | | SIGNAL. ACTUAL SAFETY INJECTION INTO THE RCS DID NOT OCCUR DUE TO THE | | PUMP'S ALIGNMENT DURING THIS MODE OF OPERATION (HOT SHUTDOWN). ALL ESF | | EQUIPMENT FUNCTIONED AS REQUIRED. | | | | AT APPROXIMATELY 14:15 (EDT), THE LICENSEE TERMINATED THE ESF ACTION AND | | RETURNED THE PLANT TO STABLE CONDITIONS AND NORMAL CONFIGURATIONS USING | | OPERATING PROCEDURES. THE SURVEILLANCE TEST THAT WAS BEING PERFORMED AT | | THE TIME OF THE EVENT HAD PREVIOUSLY BEEN PERFORMED WITH THE UNIT IN COLD | | SHUTDOWN, BUT IT HAD NOT BEEN PERFORMED WITH THE UNIT IN THESE PLANT | | CONDITIONS. THE LICENSEE PLANS TO CONDUCT AN EVENT CRITIQUE TO DETERMINE | | THE CAUSE OF THE EVENT, AND CORRECTIVE ACTIONS WILL BE TAKEN ACCORDINGLY. | | | | THE RESIDENT INSPECTOR WAS NOTIFIED BY THE LICENSEE. | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 28739 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: DUANE ARNOLD REGION: 3 |NOTIFICATION DATE: 04/29/95 | |UNIT: [1] [ ] [ ] STATE: IA |NOTIFICATION TIME: 17:23 [ET]| |RX TYPE: [1] GE-4 |EVENT DATE: 04/29/95 | +------------------------------------------------+EVENT TIME: 14:06[CDT]| |NRC NOTIFIED BY: BARTON |LAST UPDATE DATE: 04/29/95 | |HQ OPS OFFICER: LEIGH TROCINE +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |ROGER LANKSBURY RDO | |AESF 50.72(b)(2)(ii) ESF ACTUATION | | | | | | | | | | | | | | +-----+----------+-------+--------+--------------+--+--------+-----------------+ |UNIT |SCRAM CODE|RX CRIT|INIT PWR| INIT RX MODE |CURR PWR| CURR RX MODE | +-----+----------+-------+--------+-----------------+--------+-----------------+ | 1 | N Y 100 POWER OPERATION | 100 POWER OPERATION | | | | | | | | | +-----+---------------------------------------------+--------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | AN EXCESS FLOW CHECK VALVE CLOSED DURING THE VENTING OF AN INSTRUMENT LINE. | | | | INSTRUMENT TECHNICIANS PERFORMING A CORE FLOW CALIBRATION VENTED A JET PUMP | | FLOW TRANSMITTER TOO QUICKLY CAUSING AN EXCESS FLOW CHECK VALVE TO CLOSE. | | THE LICENSEE CONSIDERS THE AUTOMATIC CLOSURE OF AN EXCESS FLOW CHECK VALVE | | TO BE AN ESF ACTUATION. AN ALARM WAS RECEIVED IN THE CONTROL ROOM, AND THE | | LICENSEE VERIFIED THAT THERE WAS NO ACTUAL LEAK. THE LICENSEE SUBSEQUENTLY | | RESET THE EXCESS FLOW CHECK VALVE, AND RESTORED THE SYSTEM TO NORMAL | | CONFIGURATION. | | | | THE RESIDENT INSPECTOR WAS NOTIFIED BY THE LICENSEE. | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 28740 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: BRAIDWOOD REGION: 3 |NOTIFICATION DATE: 04/29/95 | |UNIT: [ ] [2] [ ] STATE: IL |NOTIFICATION TIME: 19:14 [ET]| |RX TYPE: [1] W-4-LP,[2] W-4-LP |EVENT DATE: 04/29/95 | +------------------------------------------------+EVENT TIME: 17:24[CDT]| |NRC NOTIFIED BY: DENNIS HIGINBOTHAM |LAST UPDATE DATE: 04/30/95 | |HQ OPS OFFICER: LEIGH TROCINE +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: UNUSUAL EVENT +-----------------------------+ |10 CFR SECTION: |ROGER LANKSBURY RDO | |AAEC 50.72(a)(1)(i) EMERGENCY DECLARED |BRIAN GRIMES EO | |NLCO TECH SPEC LCO A/S |GENE KANUPP FEMA | | | | | | | | | | +-----+----------+-------+--------+--------------+--+--------+-----------------+ |UNIT |SCRAM CODE|RX CRIT|INIT PWR| INIT RX MODE |CURR PWR| CURR RX MODE | +-----+----------+-------+--------+-----------------+--------+-----------------+ | | | | | 2 | N Y 100 POWER OPERATION | 100 POWER OPERATION | | | | | +-----+---------------------------------------------+--------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | UNUSUAL EVENT DUE TO RCS LEAKAGE GREATER THAN TECHNICAL SPECIFICATION | | LIMITS. | | | | THE LICENSEE DECLARED AN UNUSUAL EVENT DUE TO RCS LEAKAGE BEING | | APPROXIMATELY 25 GPM WHICH IS GREATER THAN THE LICENSEE'S 10-GPM TECHNICAL | | SPECIFICATION LIMIT FOR RCS LEAKAGE. THE LICENSEE SUSPECTS THAT A | | CONTAINMENT VALVE LEAK-OFF LINE TO THE PRESSURIZER RELIEF TANK (PRT) IS THE | | SOURCE OF THE LEAKAGE AND THAT THE VALVE SEAL MAY HAVE FAILED. | | | | THE LICENSEE IS CURRENTLY CONDUCTING AN INVESTIGATION TO DETERMINE WHICH | | VALVE IS LEAKING AND HAS MADE A CONTAINMENT ENTRY WITH THE UNIT AT RATED | | POWER TO TRY TO IDENTIFY THE VALVE SEAL THAT HAS FAILED CAUSING THIS | | LEAK-OFF LINE TO CARRY THE 25 GPM TO THE PRESSURIZER RELIEF TANK. THE | | LICENSEE ALSO COMMENCED A LOAD REDUCTION AT 18:19 (CDT) AND PLANS TO REDUCE | | REACTOR POWER TO 40% AND MAKE ANOTHER CONTAINMENT ENTRY. IF IT IS NOT | | FEASIBLE TO ISOLATE THIS LEAK-OFF AT THAT TIME, THE LICENSEE INTENDS TO | | TAKE THE UNIT OFF LINE IN ORDER TO FACILITATE THE NECESSARY REPAIRS. | | | | THE ONLY OTHER UNUSUAL CIRCUMSTANCE DURING THIS EVENT IS THAT ONE OF THE | | LETDOWN ISOLATION VALVES (2-CV-460) DID NOT CLOSE WHEN AN OPERATOR | | ATTEMPTED TO CLOSE IT FROM THE MAIN CONTROL BOARD. THIS VALVE IS LOCATED | | INSIDE CONTAINMENT AND IS NOT REQUIRED FOR CONTAINMENT ISOLATION. | | | | NO RADIATION MONITOR ACTIVITY HAS BEEN IDENTIFIED AS A RESULT OF THIS | | EVENT. ALL LEAKAGE HAS BEEN CONTAINED WITHIN PIPING AND TANKS. | | | | THE LICENSEE NOTIFIED THE RESIDENT INSPECTOR AND THE STATE BUT DOES NOT | | PLAN ON MAKING A PRESS RELEASE. | | | | *UPDATE DATE/TIME:4/30/95 @ 0452 EST *FROM LICENSEE:YURKOVICH BY:McGINTY* | | THE LICENSEE TERMINATED THE UNUSUAL EVENT AT 0300 CDT WHEN THE SOURCE OF | | THE LEAKAGE TO THE PRT WAS ISOLATED. THE UNIT IS CURRENTLY STABLE AT | | NOP/NOT. THE SOURCE OF THE LEAKAGE WAS DETERMINED TO BE TWO LOOP STOP | | BYPASS VALVES (2RC8003A AND 2RC8003B), AND THE LEAKAGE TO THE PRT WAS | | STOPPED BY BACKSEATING THE VALVES. THE VALVES WERE INSTALLED WITH THE | | INTENDED FUNCTION OF BEING ABLE TO HEAT UP AN ISOLATED LOOP, AND ARE | | NORMALLY CLOSED AND DE-ENERGIZED. OPENING AND BACKSEATING THE VALVES | | ISOLATES THE PACKING GLAND LEAK-OFF TO THE PRT FOR THESE VALVES. | | | | THE LICENSEE INTENDS TO COOL DOWN SOME AND REDUCE PRESSURE TO ABOUT 360 | | psig TO PERFORM REPAIRS. THE ESTIMATED RESTART DATE IS 5/3/95. THE | | LICENSEE INFORMED THE RESIDENT INSPECTOR AND THE STATE. HOO NOTIFIED THE | | R3DO (LANKSBURY), THE NRR EO (GRIMES) AND FEMA (CALDWELL). | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 28741 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: INDIAN POINT REGION: 1 |NOTIFICATION DATE: 04/30/95 | |UNIT: [2] [ ] [ ] STATE: NY |NOTIFICATION TIME: 09:35 [ET]| |RX TYPE: [2] W-4-LP,[3] W-4-LP |EVENT DATE: 04/30/95 | +------------------------------------------------+EVENT TIME: 08:10[EDT]| |NRC NOTIFIED BY: SANTINI |LAST UPDATE DATE: 04/30/95 | |HQ OPS OFFICER: TIM McGINTY +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |JACK DURR RDO | |APRE 50.72(b)(2)(vi) OFFSITE NOTIFICATION | | | | | | | | | | | | | | +-----+----------+-------+--------+--------------+--+--------+-----------------+ |UNIT |SCRAM CODE|RX CRIT|INIT PWR| INIT RX MODE |CURR PWR| CURR RX MODE | +-----+----------+-------+--------+-----------------+--------+-----------------+ | 2 | N N 0 COLD SHUTDOWN | 0 COLD SHUTDOWN | | | | | | | | | +-----+---------------------------------------------+--------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | SMALL OIL SHEEN NOTICED IN THE UNIT 2 DISCHARGE CANAL. | | | | AT 0810 EDT AN OIL SHEEN WAS NOTICED IN THE UNIT 2 DISCHARGE CANAL. THE | | ESTIMATED AMOUNT OF OIL OBSERVED IS LESS THAN A HALF-GALLON. STATION | | PERSONNEL HAVE INITIATED A CLEANUP AND AN INVESTIGATION OF THE SOURCE OF | | OIL. THE CON EDISON CENTRAL INFORMATION GROUP WILL BE NOTIFYING THE COAST | | GUARD, THE NY STATE DEPARTMENT OF ENVIRONMENTAL CONSERVATION, THE | | WESTCHESTER COUNTY DEPARTMENT OF HEALTH AND THE INTERSTATE SANITATION | | COMMISSION. THE LICENSEE INFORMED THE RESIDENT INSPECTOR. | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 28742 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: MILLSTONE REGION: 1 |NOTIFICATION DATE: 05/01/95 | |UNIT: [ ] [2] [ ] STATE: CT |NOTIFICATION TIME: 00:43 [ET]| |RX TYPE: [1] GE-3,[2] CE,[3] W-4-LP |EVENT DATE: 04/30/95 | +------------------------------------------------+EVENT TIME: 19:13[EDT]| |NRC NOTIFIED BY: BURTON |LAST UPDATE DATE: 05/01/95 | |HQ OPS OFFICER: TIM McGINTY +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: | | |AESF 50.72(b)(2)(ii) ESF ACTUATION | | | | | | | | | | | | | | +-----+----------+-------+--------+--------------+--+--------+-----------------+ |UNIT |SCRAM CODE|RX CRIT|INIT PWR| INIT RX MODE |CURR PWR| CURR RX MODE | +-----+----------+-------+--------+-----------------+--------+-----------------+ | | | | | 2 | N N 0 REFUELING | 0 REFUELING | | | | | +-----+---------------------------------------------+--------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | CLOSED COOLING WATER SYSTEM ISOLATION TO THE NON-SAFETY HEADER. | | | | UNIT 2 IS DEFUELED AND IN A REFUELING OUTAGE. AT 1913 EDT ON 4/30/95, AN | | ISOLATION OF THE CLOSED COOLING WATER SYSTEM TO THE NON-SAFETY RELATED | | HEADER OCCURRED. THE CAUSE WAS A LOSS OF POWER SIGNAL ON A DE-ENERGIZED | | BUS, AND OCCURRED WHEN THE RELAY WAS PICKED UP WHILE RE-ENERGIZING THE | | "34D" 120 VAC BUS. THE LICENSEE WAS RE-INSTALLING A FUSE ON A 120 VAC | | CONTROL CIRCUIT WHEN THE "DE-ENERGIZED BUS" SIGNAL WAS PICKED UP, RESULTING | | IN THE ISOLATION. | | | | THE LICENSEE RESET THE SIGNAL AND HAS RESTORED THE CLOSED COOLING WATER | | SYSTEM TO ITS NORMAL LINEUP. THE LICENSEE WILL BE INVESTIGATING THE CAUSE. | | SINCE THE ISOLATION OCCURRED AS THE RESULT OF THE DE-ENERGIZED BUS SIGNAL, | | THE LICENSEE DID NOT IMMEDIATELY RECOGNIZE THAT THIS REPORTABLE EVENT | | OCCURRED, AND WAS SUBSEQUENTLY LATE IN REPORTING IT. THE LICENSEE HAS | | INFORMED THE RESIDENT INSPECTOR AND THE STATE AND LOCAL AUTHORITIES. | +------------------------------------------------------------------------------+