U.S. Nuclear Regulatory Commission Operations Center Event Reports For 06/02/94 - 06/03/94 ** EVENT NUMBERS ** 27236 27329 27334 27336 27337 27338 27339 27340 27341 27342 !!!!!!!!! THIS EVENT HAS BEEN RETRACTED. THIS EVENT HAS BEEN RETRACTED !!!!!!! +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 27236 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: SEQUOYAH REGION: 2 |NOTIFICATION DATE: 05/12/94 | |UNIT: [1] [2] [ ] STATE: TN |NOTIFICATION TIME: 07:46 [ET]| |RX TYPE: [1] W-4-LP,[2] W-4-LP |EVENT DATE: 05/12/94 | +------------------------------------------------+EVENT TIME: 06:38[EDT]| |NRC NOTIFIED BY: FIELDS |LAST UPDATE DATE: 06/02/94 | |HQ OPS OFFICER: TIM McGINTY +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |DAVID MCGUIRE RDO | |AESF 50.72(b)(2)(ii) ESF ACTUATION | | |NLCO TECH SPEC LCO A/S | | | | | | | | | | | +-----+----------+-------+--------+--------------+--+--------+-----------------+ |UNIT |SCRAM CODE|RX CRIT|INIT PWR| INIT RX MODE |CURR PWR| CURR RX MODE | +-----+----------+-------+--------+-----------------+--------+-----------------+ | 1 | N Y 80 POWER OPERATION | 80 POWER OPERATION | | 2 | N Y 100 POWER OPERATION | 100 POWER OPERATION | | | | | +-----+---------------------------------------------+--------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | EGTS FAN STARTED, POSSIBLY DUE TO THE CONTROL SWITCH BEING BUMPED IN THE | | CONTROL ROOM. | | | | EGTS (EMERGENCY GAS TREATMENT SYSTEM) FAN "AA" STARTED AT 0638 EDT, FOR NO | | APPARENT REASON. AN INVESTIGATION IS UNDER WAY TO DETERMINE THE CAUSE. | | BOTH UNITS HAVE ENTERED INTO T/S LCO 3.6.1.8, WHICH CARRIES A 7 DAY ACTION | | STATEMENT. | | | | IT IS A POSSIBLE HAND SWITCH PROBLEM, BECAUSE THE FAN WOULD NOT STOP FROM | | THE MAIN CONTROL ROOM HAND SWITCH OR THE LOCAL HAND SWITCH. THE LOCAL | | BREAKER WAS OPENED TO STOP THE FAN. PERSONNEL DID BUMP THE HAND SWITCH FOR | | THE FAN IN THE CONTROL ROOM, AND DID NOT IMMEDIATELY NOTE THE FAN WAS | | RUNNING. IT WAS, HOWEVER, DISCOVERED TO BE RUNNING A SHORT TIME LATER. | | THE TWO EGTS FANS AUTOMATICALLY START TO MAINTAIN THE ANNULUS ATMOSPHERE | | UNDER ACCIDENT CONDITIONS, AND CAN BE LINED UP TO EITHER UNIT. THE | | LICENSEE HAS INFORMED THE RESIDENT INSPECTOR. | | | | **** RETRACTED BY DAVID WILKES @ 2000 EDT ON 06/2/94 TAKEN BY ANDREWS **** | | AFTER REVIEW OF THE EVENT, THE LICENSEE HAS DETERMINED THAT THIS WAS NOT AN | | ACTUATION FROM A VALID SIGNAL. BECAUSE THEY HAVE DETERMINED THAT THIS | | EVENT WAS NOT REPORTABLE, THEY ARE RETRACTING THIS EVENT. | | | | THE NRC RESIDENT INSPECTOR WILL BE NOTIFIED. | | | | HOO NOTIFIED R2DO (POTTER). | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 27329 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: BEAVER VALLEY REGION: 1 |NOTIFICATION DATE: 06/01/94 | |UNIT: [ ] [2] [ ] STATE: PA |NOTIFICATION TIME: 16:33 [ET]| |RX TYPE: [1] W-3-LP,[2] W-3-LP |EVENT DATE: 06/01/94 | +------------------------------------------------+EVENT TIME: 14:55[EDT]| |NRC NOTIFIED BY: WAHLENMAYER |LAST UPDATE DATE: 06/02/94 | |HQ OPS OFFICER: CHAUNCEY GOULD +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |JOHN WHITE RDO | |ARPS 50.72(b)(2)(ii) RPS ACTUATION | | |AESF 50.72(b)(2)(ii) ESF ACTUATION |KEN BROCKMAN IRB | | | | | | | | | | +-----+----------+-------+--------+--------------+--+--------+-----------------+ |UNIT |SCRAM CODE|RX CRIT|INIT PWR| INIT RX MODE |CURR PWR| CURR RX MODE | +-----+----------+-------+--------+-----------------+--------+-----------------+ | | | | | 2 | A/R Y 100 POWER OPERATION | 0 HOT STANDBY | | | | | +-----+---------------------------------------------+--------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | THE PLANT TRIPPED FROM 100% POWER DUE TO A 2 OUT OF 3 COINCIDENCE | | UNDERFREQUENCY REACTOR TRIP. | | | | THIS OCCURRED WHEN THEY HAD A LOSS OF OFFSITE POWER FEED TO TWO OUT OF FOUR | | 4KV BUSES WHICH RESULTED FROM THE FAILURE OF THE UNIT 1 MAIN | | TRANSFORMER(SEE EVENT #27329). THE VOLTAGE PERTURBATION ON THE SYSTEM | | CAUSED ITS PROTECTIVE CIRCUITRY TO TRIP THE SUPPLY BREAKER FOR ONE OF THEIR | | OFFSITE POWER SUPPLIES AND THAT RESULTED IN A 2 OUT OF 3 COINCIDENCE FOR | | UNDERFREQUENCY ON THE POWER SUPPLY TO THE REACTOR COOLANT PUMPS CAUSING THE | | REACTOR TRIP. ALL RODS FULLY INSERTED AND NO RELIEF VALVES OPENED. THEY ARE | | INVESTIGATING THE PROTECTIVE RELAY SCHEME FOR THE OFFSITE POWER SUPPLY, | | ALONG WITH ALL OTHER SWITCHYARD EQUIPMENT AND RELAY PROTECTIVE CIRCUITRY. | | THE #1 EDG ALSO AUTO STARTED AND LOADED, BUT WAS SECURED AT 15:36 WHEN | | POWER WAS RESTORED TO THE TWO 4KV BUSES. THE RI WAS INFORMED. | | | | * * * UPDATE 6/2/94 03:45 DURING STATUS FROM MURRAY TAKEN BY SEBROSKY * * * | | THE 2 OUT OF 3 COINCIDENCE UNDERFREQUENCY PROTECTION IN ADDITION TO CAUSING | | THE REACTOR TRIP ALSO CAUSED ALL 3 REACTOR COOLANT PUMPS TO TRIP. THE | | CAUSE OF THE 2 OUT OF 3 COINCIDENCE UNDERFREQUENCY TRIP WAS A LOSS OF POWER | | TO THE "2A" AND "2B" BUSSES. THE LICENSEE IS STILL INVESTIGATING WHY UNIT | | 1 TRIPPING (SEE EVENT # 27238) APPARENTLY CAUSED UNIT 2 TO TRIP. | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 27334 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: NORTH ANNA REGION: 2 |NOTIFICATION DATE: 06/01/94 | |UNIT: [ ] [2] [ ] STATE: VA |NOTIFICATION TIME: 22:01 [ET]| |RX TYPE: [1] W-3-LP,[2] W-3-LP |EVENT DATE: 06/01/94 | +------------------------------------------------+EVENT TIME: 21:21[EDT]| |NRC NOTIFIED BY: VALECRUZ |LAST UPDATE DATE: 06/02/94 | |HQ OPS OFFICER: CHAUNCEY GOULD +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: UNUSUAL EVENT +-----------------------------+ |10 CFR SECTION: |JOHN POTTER RDO | |AAEC 50.72(a)(1)(i) EMERGENCY DECLARED |ELINOR ADENSAM EO | |NLCO TECH SPEC LCO A/S |SULLIVAN FEMA | | | | | | | | | | +-----+----------+-------+--------+--------------+--+--------+-----------------+ |UNIT |SCRAM CODE|RX CRIT|INIT PWR| INIT RX MODE |CURR PWR| CURR RX MODE | +-----+----------+-------+--------+-----------------+--------+-----------------+ | | | | | 2 | N N 0 HOT STANDBY | 0 HOT STANDBY | | | | | +-----+---------------------------------------------+--------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | THE PLANT ENTERED AN NOUE WHEN THEY DETERMINED THAT THEY A REACTOR COOLANT | | PUMP SEAL INJECTION LINE PRESSURE BOUNDARY LEAKAGE GREATER THAN TS ALLOWS. | | | | THE PLANT HAD A SUDDEN DEVELOPMENT OF RCP SEAL INJECTION LINE PRESSURE | | BOUNDARY LEAKAGE WHICH STARTED 6/1/94 @ 11:30. THE MEASURED LEAK RATE IS | | 0.7 GPM(TS ALLOWS O LEAKAGE) AND THE VOLUME OF LEAKAGE HAS BEEN 420 GALS. | | THE PRIMARY ACTIVITY IS 4.09X10-3 MICROCURIES/ML AND SECONDARY ACTIVITY IS | | 5.8X10-6 MICROCURIES/ML. THE SAFETY EQUIPMENT THAT IS TAGGED OUT ON UNIT 2 | | IS THE "1A" RHR PUMP(THEY ARE WORKING ON IT IN PREPARATION FOR COOLDOWN) | | AND THE "1A" CHARGING PUMP. THE UNIT 2 "1B" RHR PUMP ALONG WITH THE "1B" & | | "1C" CHARGING PUMPS ARE OPERABLE. WITH THIS PRESSURE BOUNDARY LEAKAGE THEY | | ENTERED A LCO ACTION STATEMENT THAT GIVES THEM 4 HRS TO FIX OR 6 HRS TO HOT | | S/B AND 30 HRS TO COLD S/D. THE NOUE WILL BE TERMINATED WHEN THEY REACH | | COLD S/D. THE RI WAS INFORMED ALONG WITH THE STATE AND LOCAL AGENCIES. | | | | * * * UPDATE 6/2/94 04:45 DURING STATUS FROM PELLA TAKEN BY SEBROSKY * * * | | THE FOLLOWING IS A CLARIFICATION OF THE REPORT: | | | | AT THE TIME THE LEAKAGE WAS FOUND THE LICENSEE DECIDED TO COMMENCE A | | SHUTDOWN FROM 100% POWER TO MAKE REPAIRS EVEN THOUGH THE LEAKAGE RATE WAS | | LESS THAN THE TECHNICAL SPECIFICATION LIMIT. AT THE TIME OF THE SHUTDOWN | | THE LICENSEE HAD NOT IDENTIFIED THE LEAKAGE AS PRESSURE BOUNDARY LEAKAGE. | | | | AFTER THE PLANT WAS SHUTDOWN A CONTAINMENT ENTRY WAS MADE AND IT WAS | | DETERMINED THAT THE LEAKAGE WAS PRESSURE BOUNDARY LEAKAGE, BECAUSE THE LEAK | | WAS PRESSURE BOUNDARY LEAKAGE IT MET THE DEFINITION FOR AN UNUSUAL EVENT. | | | | * * * UPDATE 6/2/94 09:46 FROM BUTLER TAKEN BY SEBROSKY * * * | | THE UNUSUAL EVENT WAS TERMINATED AT 09:43 WHEN THE PLANT ENTERED COLD | | SHUTDOWN CONDITIONS. THE LICENSEE WILL INFORM THE RESIDENT INSPECTOR. | | | | HOO NOTIFIED R2DO(POTTER), EO(DENNING) AND FEMA (CANUPP). | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 27336 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: RIVER BEND REGION: 4 |NOTIFICATION DATE: 06/02/94 | |UNIT: [1] [ ] [ ] STATE: LA |NOTIFICATION TIME: 11:54 [ET]| |RX TYPE: [1] GE-6 |EVENT DATE: 06/02/94 | +------------------------------------------------+EVENT TIME: 08:20[CDT]| |NRC NOTIFIED BY: MURPHY CLARK |LAST UPDATE DATE: 06/02/94 | |HQ OPS OFFICER: THOMAS ANDREWS +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |TOM STETKA 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 N 0 REFUELING | 0 REFUELING | | | | | | | | | +-----+---------------------------------------------+--------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | THE NORMAL SUPPLY BREAKER FOR THE DIVISION 3 4160 VAC BUS (HIGH PRESSURE | | CORE SPRAY) TRIPPED CAUSING A LOSS OF BUS VOLTAGE. THIS CAUSED AN | | AUTOMATIC START OF THE DIVISION 3 EMERGENCY DIESEL GENERATOR. THE DIESEL | | GENERATOR AUTOMATICALLY STARTED AND PICKED UP LOAD ON THE BUS. | | | | THE LICENSEE DOES NOT KNOW WHAT CAUSED THE SUPPLY BREAKER TO TRIP. THE | | CAUSE OF THE TRIP IS BEING INVESTIGATED. THE DIESEL GENERATOR IS STILL | | BEING USED TO POWER THE BUS. | | | | THE NRC RESIDENT INSPECTOR HAS BEEN NOTIFIED BY THE LICENSEE. | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 27337 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: INDIAN POINT REGION: 1 |NOTIFICATION DATE: 06/02/94 | |UNIT: [2] [ ] [ ] STATE: NY |NOTIFICATION TIME: 13:14 [ET]| |RX TYPE: [2] W-4-LP,[3] W-4-LP |EVENT DATE: 06/02/94 | +------------------------------------------------+EVENT TIME: 13:00[EDT]| |NRC NOTIFIED BY: DENNIS CORNAX |LAST UPDATE DATE: 06/02/94 | |HQ OPS OFFICER: THOMAS ANDREWS +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |COWGILL RDO | |NLTR LICENSEE 24 HR REPORT | | |NLCO TECH SPEC LCO A/S | | | | | | | | | | | +-----+----------+-------+--------+--------------+--+--------+-----------------+ |UNIT |SCRAM CODE|RX CRIT|INIT PWR| INIT RX MODE |CURR PWR| CURR RX MODE | +-----+----------+-------+--------+-----------------+--------+-----------------+ | 2 | N Y 90 POWER OPERATION | 90 POWER OPERATION | | | | | | | | | +-----+---------------------------------------------+--------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | THE LICENSEE ENTERED A 24 HOUR LCO DUE TO THE HIGH PRESSURE FIRE PUMP BEING | | MADE INOPERABLE FOR THE PERFORMANCE OF THE ANNUAL FIRE PUMP FLOW TEST. | | | | THE LICENSEE WILL NOTIFY THE NRC RESIDENT INSPECTOR AND HAS ALREADY | | NOTIFIED THE REGION. | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 27338 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: MILLSTONE REGION: 1 |NOTIFICATION DATE: 06/02/94 | |UNIT: [ ] [2] [ ] STATE: CT |NOTIFICATION TIME: 16:58 [ET]| |RX TYPE: [1] GE-3,[2] CE,[3] W-4-LP |EVENT DATE: 06/02/94 | +------------------------------------------------+EVENT TIME: 16:40[EDT]| |NRC NOTIFIED BY: JOHN RESETAR |LAST UPDATE DATE: 06/02/94 | |HQ OPS OFFICER: THOMAS ANDREWS +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |JOHN WHITE RDO | |ADAS 50.72(b)(2)(i) DEG/UNANALYZED COND | | |NLCO TECH SPEC LCO A/S | | | | | | | | | | | +-----+----------+-------+--------+--------------+--+--------+-----------------+ |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 +------------------------------------------------------------------------------+ | THE LICENSEE HAS IDENTIFIED A POTENTIAL DESIGN ERROR INVOLVING THE CONTROL | | ROOM EMERGENCY VENTILATION SYSTEM. THE DESIGN OF THE DUCTING FOR THE | | CONTROL ROOM EMERGENCY VENTILATION SYSTEM MAY RESULT IN NO PURIFICATION OF | | RECIRCULATED AIR WHILE THE CONTROL ROOM VENTILATION IS IN RECIRCULATION | | MODE (I.E., THE FILTRATION UNIT MAY BE BYPASSED). THIS DOES NOT AFFECT THE | | ABILITY OF THE CONTROL ROOM EMERGENCY VENTILATION SYSTEM TO ACTUATE AND | | MINIMIZE THE INGRESS OF TOXIC GASES OR RADIOACTIVE GASES / PARTICULATES. | | | | THIS POTENTIAL PROBLEM WAS IDENTIFIED DURING A SYSTEM DESIGN REVIEW | | CONDUCTED AS PART OF A TRAINING SESSION. | | | | THE LICENSEE IS INVESTIGATING THE DESIGN OF THE SYSTEM TO SEE IF AN ACTUAL | | PROBLEM EXISTS. THIS NOTIFICATION IS BEING MADE AS A CONSERVATIVE MEASURE. | | THE PORTION OF THE SYSTEM BEING INVESTIGATED HAS NOT BEEN MODIFIED SINCE | | INITIAL CONSTRUCTION. | | | | AT THE TIME THIS POTENTIAL PROBLEM WAS IDENTIFIED, THE PLANT WAS IN THE | | PROCESS OF STARTING UP FROM A 41 DAY OUTAGE. THE HEATUP HAD PROGRESSED TO | | THE POINT WHERE THE LICENSEE HAD STARTED A REACTOR COOLANT PUMP AND STOPPED | | SHUTDOWN COOLING. THE LICENSEE HAS ENTERED AN LCO WHICH PREVENTS THEM FROM | | CHANGING MODES UNTIL THE POTENTIAL PROBLEM IS RESOLVED. THE LICENSEE HAS | | STOPPED THE HEATUP AND IS MAINTAINING THE REACTOR COOLANT SYSTEM AT 185 | | DEGREES WHILE THE INVESTIGATION IS PERFORMED. | | | | THE NRC RESIDENT INSPECTOR AND STATE OFFICIALS HAVE BEEN NOTIFIED. | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |OTHER NUCLEAR MATERIAL | |EVENT NUMBER: 27339 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |LICENSEE: BOWSER-MORNER, INC |NOTIFICATION DATE: 06/02/94 | | CITY: DAYTON REGION: 3 |NOTIFICATION TIME: 18:54 [ET]| | COUNTY: MONTGOMERY STATE: OH |EVENT DATE: 06/02/94 | |LICENSE#: 34-17390-01 AGREEMENT: N |EVENT TIME: 18:00[EDT]| | DOCKET: |LAST UPDATE DATE: 06/02/94 | | +-----------------------------+ | |PERSON ORGANIZATION| | |BRUCE JORGENSEN RDO | | |MARGARET FEDERLINE EO | +------------------------------------------------+ | |NRC NOTIFIED BY: DENNIS REAM | | |HQ OPS OFFICER: THOMAS ANDREWS | | +------------------------------------------------+ | |EMERGENCY CLASS: NOT APPLICABLE | | |10 CFR SECTION: | | |FLOM 20.402(a) THEFT/DIVERSION LNM | | | | | | | | | | | | | | +------------------------------------------------+-----------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | A TROXLER MOISTURE DENSITY GAUGE, MODEL 3401, SEALED SOURCE CONTAINING 8 | | MILLICURIES OF CS-137 AND 40 MILLICURIES OF AM-241 WAS STOLEN. THE CAMPER | | ON THE BACK OF THE LICENSEE'S TRUCK WAS BROKEN INTO AND THE TROXLER | | MOISTURE DENSITY GAUGE WAS REMOVED FROM THE VEHICLE. THE THEFT WAS | | DISCOVERED AT APPROXIMATELY 1800 EDT. THE VEHICLE WAS PARKED AT 221 TROY | | STREET, DAYTON, OHIO. | | | | THE LICENSEE HAS NOTIFIED THE DAYTON POLICE DEPARTMENT. THEY ARE REVIEWING | | OTHER REPORTABILITY REQUIREMENTS. THE LICENSEE MAY BE MAKING A PRESS | | RELEASE REGARDING THIS THEFT. | | | | THE LICENSEE IS: | | | | BOWSER-MORNER, INC | | 4518 TAYLORSVILLE ROAD | | DAYTON, OHIO | | PHONE (513) 236-8805, EXT 206 | | LICENSE NUMBER 34-17390-01 | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 27340 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: RIVER BEND REGION: 4 |NOTIFICATION DATE: 06/02/94 | |UNIT: [1] [ ] [ ] STATE: LA |NOTIFICATION TIME: 20:52 [ET]| |RX TYPE: [1] GE-6 |EVENT DATE: 06/02/94 | +------------------------------------------------+EVENT TIME: 17:05[CDT]| |NRC NOTIFIED BY: MURPHY CLARK |LAST UPDATE DATE: 06/02/94 | |HQ OPS OFFICER: THOMAS ANDREWS +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |TOM STETKA 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 N 0 REFUELING | 0 REFUELING | | | | | | | | | +-----+---------------------------------------------+--------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | WHILE REPLACING A RELAY IN THE REACTOR WATER CLEANUP SYSTEM ISOLATION | | CIRCUITRY, A BREAK OCCURRED IN THE NEUTRAL CIRCUIT (DAISY CHAIN) FOR THE | | DIVISION 1 BALANCE OF PLANT ISOLATION RELAYS. THIS CAUSED A DIVISION 1 | | ISOLATION ON THE FOLLOWING SYSTEMS | | | | CONDENSATE TRANSFER | | FIRE PROTECTION WATER | | SERVICE AIR | | INSTRUMENT AIR | | SPENT FUEL POOL COOLING | | REACTOR PLANT COMPONENT COOLING | | REACTOR RECIRC SYSTEM HYDRAULICS | | | | SUPPLY BREAKERS FOR NON-SAFETY RELATED EQUIPMENT POWERED FROM 480 VAC | | EMERGENCY SWITCHGEAR TRIPPED. | | | | ABNORMAL OPERATING PROCEDURE FOR ISOLATIONS WAS ENTERED TO VERIFY REQUIRED | | ACTIONS AND TO RESTORE SYSTEMS AS NECESSARY. SYSTEMS OTHER THAN THOSE | | NAMED ABOVE WERE REMOVED FROM SERVICE FOR OUTAGE RELATED ACTIVITIES AND | | WERE NOT AFFECTED BY THIS EVENT. THE MAINTENANCE ACTIVITIES ON THE RELAY | | WAS SUSPENDED UNTIL THE NEUTRAL CIRCUITRY COULD BE RESTORED AND WORK COULD | | BE PERFORMED WITHOUT FURTHER UNPLANNED ACTUATIONS. | | | | THERE WAS NOT A LOSS OF SHUTDOWN COOLING NOR WAS THERE ANY CHANGE IN | | REACTOR CAVITY / POOL LEVEL AS A RESULT OF THIS EVENT. | | | | THE NRC RESIDENT INSPECTOR HAS BEEN NOTIFIED. | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 27341 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: LASALLE REGION: 3 |NOTIFICATION DATE: 06/03/94 | |UNIT: [1] [ ] [ ] STATE: IL |NOTIFICATION TIME: 05:45 [ET]| |RX TYPE: [1] GE-5,[2] GE-5 |EVENT DATE: 06/03/94 | +------------------------------------------------+EVENT TIME: 02:20[CDT]| |NRC NOTIFIED BY: HEARY |LAST UPDATE DATE: 06/03/94 | |HQ OPS OFFICER: JOSEPH SEBROSKY +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |BRUCE JORGENSEN 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 N 0 REFUELING | 0 REFUELING | | | | | | | | | +-----+---------------------------------------------+--------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | LOSS OF SHUTDOWN COOLING FOR APPROXIMATELY 4 MINUTES WHILE SHUTDOWN COOLING | | LOOPS WERE BEING SWAPPED. | | | | THE FOLLOWING IS A TEXT OF A FACSIMILE FROM THE LICENSEE: | | | | "WHILE SWAPPING SHUTDOWN COOLING LOOPS SHUTDOWN COOLING ISOLATED AS A | | RESULT OF A HIGH SUCTION FLOW ISOLATION. OUR PROCEDURES IDENTIFY THAT | | THESE ISOLATIONS CAN OCCUR WHEN STARTING, SECURING OR ADJUSTING SHUTDOWN | | COOLING FLOW RATES. THE SYSTEM WAS CHECKED FOR LEAKS OR BREAKS AND NONE | | WERE FOUND. THE ONCOMING SHUTDOWN COOLING LOOP WAS THEN RESTARTED. AN | | ALTERNATE METHOD OF FORCED CIRCULATION WAS MAINTAINED WHILE BOTH LOOPS OF | | SHUTDOWN COOLING WERE SECURED." END OF TEXT. | | | | THE LICENSEE WAS SWAPPING FROM SHUTDOWN COOLING LOOP "A" TO SHUTDOWN | | COOLING LOOP "B" AT THE TIME OF THE ISOLATION. REACTOR COOLANT TEMPERATURE | | DECREASED 1 DEGREE F DURING THE 4 MINUTES THAT A SHUTDOWN COOLING LOOP WAS | | NOT RUNNING. THE ALTERNATE MEANS OF FORCED CIRCULATION WAS THE REACTOR | | WATER CLEANUP SYSTEM. | | | | THE LICENSEE HAS INFORMED THE RESIDENT INSPECTOR. | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |GENERAL INFORMATION or OTHER | |EVENT NUMBER: 27342 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |LICENSEE: COOPER ENERGY SERVICES |NOTIFICATION DATE: 06/02/94 | | CITY: GROVE CITY REGION: 1 |NOTIFICATION TIME: 14:16 [ET]| | COUNTY: STATE: PA |EVENT DATE: 06/02/94 | |LICENSE#: AGREEMENT: N |EVENT TIME: 12:00[EDT]| | DOCKET: |LAST UPDATE DATE: 06/02/94 | | +-----------------------------+ | |PERSON ORGANIZATION| | | | | | | +------------------------------------------------+ | |NRC NOTIFIED BY: J.D. MOWRY | | |HQ OPS OFFICER: JOSEPH SEBROSKY | | +------------------------------------------------+ | |EMERGENCY CLASS: NOT APPLICABLE | | |10 CFR SECTION: | | |CCCC 21.21 UNSPECIFIED PARAGRAPH | | | | | | | | | | | | | | +------------------------------------------------+-----------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | COOPER-BESSEMER RECIPROCATING PRODUCT DIVISION OF GROVE CITY, PA, IS MAKING | | A 10 CFR PART 21 NOTIFICATION DUE TO A POTENTIAL DEFECT IN A COMPONENT OF | | THE KSV EMERGENCY DIESEL GENERATOR SYSTEM. | | | | THERE EXISTS A POTENTIAL PROBLEM WITH THE FUEL PUMP MOUNTING STUD, COOPER | | BESSEMER PART NUMBER KSV-18-1B#1. FOUR STUDS ARE USED TO MOUNT THE FUEL | | PUMP FOR EACH CYLINDER ON THE ENGINE. BETWEEN 1987 AND MAY OF 1994, | | HOUSTON LIGHT AND POWER HAS EXPERIENCED ELEVEN FAILURES OF THE FUEL PUMP | | MOUNTING STUD, KSV-18-1B, WHICH IS THE COMMERCIAL EQUIVALENT OF THE SAFETY | | RELATED PART. TWO OTHER UTILITIES, COMMONWEALTH EDISON - BRAIDWOOD, AND | | PENNSYLVANIA POWER AND LIGHT- SUSQUEHANNA, HAVE EXPERIENCED ONE FAILURE | | EACH OF THE COMMERCIAL STUD. NO FAILURES HAVE BEEN REPORTED WITH THE | | KSV-18-1B#1, THE SAFETY RELATED FUEL PUMP MOUNTING STUD. | | | | CORRECTIVE ACTION AT COOPER WILL BE TO REDESIGN THE STUD WITH A SMALLER | | 3/8" DRILLED AND REAMED HOLE. THIS WILL PROVIDE A MUCH MORE ROBUST DESIGN. | | CORRECTIVE ACTION AT THE AFFECTED UTILITIES SHOULD BE TO RETURN ALL OF THE | | SAFETY RELATED STUDS, KSV-18-1B#1, AND REPLACE THEM WITH THE NEW PART | | NUMBER KSV-18-1B#3. | +------------------------------------------------------------------------------+