U.S. Nuclear Regulatory Commission Operations Center Event Reports For 10/08/96 - 10/09/96 ** EVENT NUMBERS ** 31020 31105 31109 31110 31111 31112 31113 31114 31115 31116 31117 31118 31119 !!!!!!!!! THIS EVENT HAS BEEN RETRACTED. THIS EVENT HAS BEEN RETRACTED !!!!!!! +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 31020 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: COOPER REGION: 4 |NOTIFICATION DATE: 09/18/96 | |UNIT: [1] [ ] [ ] STATE: NE |NOTIFICATION TIME: 13:15 [ET]| |RX TYPE: [1] GE-4 |EVENT DATE: 09/18/96 | +------------------------------------------------+EVENT TIME: 08:30[CDT]| |NRC NOTIFIED BY: CROW |LAST UPDATE DATE: 10/08/96 | |HQ OPS OFFICER: CHAUNCEY GOULD +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |WILLIAM JOHNSON RDO | |AINA 50.72(b)(2)(iii)(A) POT UNABLE TO SAFE SD | | |NLCO TECH SPEC LCO A/S | | | | | | | | | | | +-----+----------+-------+--------+--------------+--+--------+-----------------+ |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 +------------------------------------------------------------------------------+ | THE LICENSEE DECLARED THE REACTOR OVERFILL PROTECTION INSTRUMENTATION | | INOPERABLE, PLACING THE UNIT IN A 30 DAY LCO. | | | | ON 9/17/96, THE REACTOR VESSEL OVERFILL PROTECTION CHANNELS WERE DECLARED | | INOPERABLE WHEN THE LICENSEE DISCOVERED THAT THEY WERE NOT BEING PROPERLY | | SURVEILLED DUE TO INADEQUATE CALIBRATION AND FUNCTIONAL TESTING WHICH | | FAILED TO ENCOMPASS THE ENTIRE INSTRUMENT. UPON FURTHER REVIEW, THE | | LICENSEE DETERMINED ON 9/18/96 THAT THIS MAY CONSTITUTE A REPORTABLE | | CONDITION. | | | | THE THREE REACTOR VESSEL OVERFILL CHANNELS PROVIDE INPUT TO A 2-OUT-OF-3 | | LOGIC SYSTEM DESIGNED TO TRIP THE REACTOR FEED PUMPS AND THE MAIN TURBINE | | ON HIGH REACTOR WATER LEVEL. A MAIN TURBINE TRIP RESULTS IN A TURBINE STOP | | VALVE CLOSURE, WHICH INITIATES A REACTOR SCRAM. IN THE LICENSEE'S ACCIDENT | | ANALYSIS, THIS RPS TRIP IS CREDITED WITH TERMINATING THE REACTOR FEED PUMP | | CONTROLLER FAILURE TRANSIENT. ALTHOUGH THE MAIN TURBINE STOP VALVE CLOSURE | | RPS CHANNEL WAS OPERABLE AND ALTERNATE MEANS, INCLUDING MANUAL SCRAM, WOULD | | LIKELY HAVE RESULTED IN SAFE SHUTDOWN, THIS CONDITION IS CONSERVATIVELY | | BEING REPORTED PENDING FURTHER REVIEW. THE NRC RESIDENT INSPECTOR WAS | | INFORMED. | | | | * * * UPDATE 1800EDT 10/8/96 FROM TERRY RATZLAFF TO S.SANDIN * * * | | | | THE LICENSEE IS RETRACTING THIS EVENT BASED ON THE FOLLOWING: | | | | "THE ABOVE NOTIFICATION WAS MADE BASED ON THE INITIAL DETERMINATION THAT | | THE REACTOR OVERFILL PROTECTION INSTRUMENTATION CHANNELS WERE INOPERABLE AS | | A RESULT OF NOT BEING PROPERLY SURVEILLED. IT WAS INITIALLY BELIEVED THAT | | PROPER SURVEILLING THESE INSTRUMENTS REQUIRED VALIDATING THE CHANNEL | | CONTACT ACTUATION WITHIN THE MULTI-CHANNEL LOGIC CIRCUITS OF THE REACTOR | | FEED PUMP AND MAIN TURBINE TRIP CIRCUITS AS PART OF THE INSTRUMENT | | FUNCTIONAL TEST. HOWEVER, UPON FURTHER REVIEW, IT WAS DETERMINED THAT THIS | | TYPE OF CONTACT VERIFICATION IS PROPERLY PART OF A LOGIC SYSTEM FUNCTIONAL | | TEST, AND NOT REQUIRED FOR INSTRUMENT FUNCTIONAL TESTING IN ACCORDANCE WITH | | THE CNS CURRENT LICENSING BASIS. ACCORDINGLY, THESE INSTRUMENTS WERE NOT, | | IN FACT, INOPERABLE AS A RESULT OF THIS CONDITION." | | | | THE LICENSEE WILL INFORM THE NRC RESIDENT INSPECTOR. NOTIFIED | | R4DO(HOWELL). | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 31105 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: CRYSTAL RIVER REGION: 2 |NOTIFICATION DATE: 10/07/96 | |UNIT: [3] [ ] [ ] STATE: FL |NOTIFICATION TIME: 09:10 [ET]| |RX TYPE: [3] B&W-L-LP |EVENT DATE: 10/07/96 | +------------------------------------------------+EVENT TIME: 08:49[EDT]| |NRC NOTIFIED BY: JEFF BECK |LAST UPDATE DATE: 10/08/96 | |HQ OPS OFFICER: RUDY KARSCH +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: UNUSUAL EVENT +-----------------------------+ |10 CFR SECTION: |PAUL FREDRICKSON RDO | |AAEC 50.72(a)(1)(i) EMERGENCY DECLARED |AL CHAFFEE EO | |ANHU 50.72(b)(1)(iii) HURRICANE |STORER FEMA | | |FRANK CONGEL AEOD | | | | | | | +-----+----------+-------+--------+--------------+--+--------+-----------------+ |UNIT |SCRAM CODE|RX CRIT|INIT PWR| INIT RX MODE |CURR PWR| CURR RX MODE | +-----+----------+-------+--------+-----------------+--------+-----------------+ | 3 | N N 0 COLD SHUTDOWN | 0 COLD SHUTDOWN | | | | | | | | | +-----+---------------------------------------------+--------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | UNUSUAL EVENT DECLARED AT 0849 EDT DUE TO THE IMPENDING ARRIVAL OF | | HURRICANE JOSEPHINE. | | | | WEST CENTRAL FLORIDA AND THE CRYSTAL RIVER SITE HAVE BEEN PLACED INTO A | | HURRICANE WARNING DUE TO HURRICANE JOSEPHINE. LAND FALL IS EXPECTED EARLY | | TUESDAY MORNING NORTH OF THE SITE. STORM SURGES OF SIX TO SEVEN FEET ARE | | EXPECTED FOR CITRUS COUNTY. PRESENT WIND SPEED AT THE SITE IS 12 MPH. THE | | LICENSEE INFORMED THE NRC RESIDENT INSPECTOR, STATE AND COUNTY GOVERNMENTS | | AND A PRESS RELEASE WILL BE ISSUED. | | | | * * * UPDATE 1207EDT 10/7/96 FROM TYRIE TO S.SANDIN * * * | | THE LICENSEE IS CORRECTING THE PREVIOUS NOTIFICATION TO SHOW THAT TROPICAL | | STORM JOSEPHINE HAS SUSTAINED WINDS OF 70MPH AND IS EXPECTED TO STRENGTHEN | | TO HURRICANE FORCE WITHIN THE NEXT 12 HOURS. ALL OTHER INFORMATION IS | | CORRECT. | | | | ***UPDATE ON 10/08/96 @ 00:04 BY MARSHALL TO GOULD*** THE HURRICANE WARNING | | WAS DISCONTINUED AT 23:00 AND THE NOUE WAS TERMINATED AT 23:26. THE RI WAS | | INFORMED ALONG WITH STATE AND LOCAL AGENCIES. THERE WILL BE A PRESS | | RELEASE. RDO POTTER, EO BATEMAN, FEMA RISHE WERE NOTIFIED. | | | | * * * UPDATE 1140 10/8/96 FROM TYRIE TAKEN BY STRANSKY * * * | | | | THE LICENSEE HAS MADE A PRESS RELEASE REGARDING THE UNUSUAL EVENT. NOTIFIED | | R2DO (POTTER). | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 31109 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: DRESDEN REGION: 3 |NOTIFICATION DATE: 10/08/96 | |UNIT: [ ] [2] [3] STATE: IL |NOTIFICATION TIME: 03:09 [ET]| |RX TYPE: [1] GE-1,[2] GE-3,[3] GE-3 |EVENT DATE: 10/08/96 | +------------------------------------------------+EVENT TIME: 00:30[CDT]| |NRC NOTIFIED BY: HANSON |LAST UPDATE DATE: 10/08/96 | |HQ OPS OFFICER: CHAUNCEY GOULD +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |MELVYN LEACH RDO | |AIND 50.72(b)(2)(iii)(D) ACCIDENT MITIGATION | | |NLCO TECH SPEC LCO A/S | | | | | | | | | | | +-----+----------+-------+--------+--------------+--+--------+-----------------+ |UNIT |SCRAM CODE|RX CRIT|INIT PWR| INIT RX MODE |CURR PWR| CURR RX MODE | +-----+----------+-------+--------+-----------------+--------+-----------------+ | | | | | 2 | N Y 100 POWER OPERATION | 100 POWER OPERATION | | 3 | N Y 82 POWER OPERATION | 82 POWER OPERATION | +-----+---------------------------------------------+--------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | BOTH UNITS ENTERED A 14 DAY LCO ACTION STATEMENT THAT REQUIRES THEM TO BE | | IN A CONDITION WHERE SECONDARY CONTAINMENT IS NOT REQUIRED. | | | | WHILE MEASURING THE CONTROL ROOM PRESSURE BOUNDARIES, SYSTEM ENGINEERING | | FOUND THAT THE CONTROL ROOM COULD NOT BE PRESSURIZED TO THE REQUIRED 1/8" | | H2O GAUGE WITH RESPECT TO ALL ADJACENT AREAS AS REQUIRED IN THE DESIGN | | BASIS AND UFSAR SECTION 6.4. BOTH UNITS THEN ENTERED A 14 DAY | | ADMINISTRATIVE TECH REQUIREMENT TO RESTORE TO OPERABLE STATUS OR WITHIN THE | | FOLLOWING 36 HOURS BE IN A CONDITION WHERE SECONDARY CONTAINMENT IS NOT | | REQUIRED. ENGINEERING WILL DEVELOP A SPECIAL PROCEDURE TO ISOLATE CERTAIN | | FLOW PATHS TO IDENTIFY POTENTIAL LEAKAGE PATHS. THE RI WILL BE INFORMED. | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 31110 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: BRUNSWICK REGION: 2 |NOTIFICATION DATE: 10/08/96 | |UNIT: [1] [2] [ ] STATE: NC |NOTIFICATION TIME: 03:12 [ET]| |RX TYPE: [1] GE-4,[2] GE-4 |EVENT DATE: 10/08/96 | +------------------------------------------------+EVENT TIME: 01:35[EDT]| |NRC NOTIFIED BY: KITCHEN |LAST UPDATE DATE: 10/08/96 | |HQ OPS OFFICER: CHAUNCEY GOULD +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |JOHN POTTER RDO | |APRE 50.72(b)(2)(vi) OFFSITE NOTIFICATION | | | | | | | | | | | | | | +-----+----------+-------+--------+--------------+--+--------+-----------------+ |UNIT |SCRAM CODE|RX CRIT|INIT PWR| INIT RX MODE |CURR PWR| CURR RX MODE | +-----+----------+-------+--------+-----------------+--------+-----------------+ | 1 | N N 0 COLD SHUTDOWN | 0 COLD SHUTDOWN | | 2 | N Y 100 POWER OPERATION | 100 POWER OPERATION | | | | | +-----+---------------------------------------------+--------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | THE LICENSEE WILL NOTIFY THE NORTH CAROLINA DIVISION OF ENVIRONMENTAL | | MANAGEMENT THAT THEY EXCEEDED THEIR NPDS OPERATING PERMIT #NC0007064. | | | | | | DUE TO HEAVY RAINS ASSOCIATED WITH TROPICAL STORM JOSEPHINE, THE STORM | | DRAIN BASIN WATER LEVEL WAS APPROACHING OVERFLOW LEVELS. TO PREVENT DAMAGE | | TO THE MOTOR DRIVEN STORM DRAIN PUMPS, THE WATER WAS DIRECTLY RELEASED TO | | THE DISCHARGE CANAL VIA THE MANUAL OVERFLOW VALVE. THE LICENSEE WILL ALSO | | ISSUE A WRITTEN REPORT TO THE STATE. THERE SHOULD BE ONLY MINIMAL SAFETY | | SIGNIFICANCE. WATER SAMPLES TAKEN AT 01:10 INDICATED NO DETECTABLE | | ACTIVITY. THEY WILL CLOSE THE OVERFLOW VALVE WHEN WEATHER CONDITIONS | | PERMIT. THE RI WAS NOTIFIED ALONG WITH THE STATE. | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 31111 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: MILLSTONE REGION: 1 |NOTIFICATION DATE: 10/08/96 | |UNIT: [ ] [2] [ ] STATE: CT |NOTIFICATION TIME: 10:02 [ET]| |RX TYPE: [1] GE-3,[2] CE,[3] W-4-LP |EVENT DATE: 10/08/96 | +------------------------------------------------+EVENT TIME: 09:56[EDT]| |NRC NOTIFIED BY: WALSH |LAST UPDATE DATE: 10/08/96 | |HQ OPS OFFICER: CHAUNCEY GOULD +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |PETER ESELGROTH 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 | +-----+----------+-------+--------+-----------------+--------+-----------------+ | | | | | 2 | N N 0 COLD SHUTDOWN | 0 COLD SHUTDOWN | | | | | +-----+---------------------------------------------+--------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | THE LICENSEE DETERMINED THE REACTOR HEAD VENT SYSTEM MAY NOT BE ABLE TO | | PERFORM ITS DESIGN FUNCTION. | | | | DURING VENTING OF NON-CONDENSIBLE GASES, WHILE IN A POSTULATED ACCIDENT, | | CONDENSATE IN THE VENT PIPING MAY CAUSE PIPING FAILURE AND LOSS OF PRESSURE | | BOUNDARY. THE VENT SYSTEM, HOWEVER, IS NOT NEEDED WHILE THE PLANT IS IN | | MODE 5. THIS CONDITION WILL BE CORRECTED PRIOR TO S/U. THE CAUSE MAY BE | | DUE TO INADEQUATE DESIGN, BUT THEY ARE STILL INVESTIGATING. THE RESIDENT | | INSPECTOR, STATE AND LOCAL AGENCIES WERE NOTIFIED. | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 31112 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: GINNA REGION: 1 |NOTIFICATION DATE: 10/08/96 | |UNIT: [1] [ ] [ ] STATE: NY |NOTIFICATION TIME: 10:28 [ET]| |RX TYPE: [1] W-2-LP |EVENT DATE: 10/05/96 | +------------------------------------------------+EVENT TIME: 13:40[EDT]| |NRC NOTIFIED BY: WHITE |LAST UPDATE DATE: 10/08/96 | |HQ OPS OFFICER: BOB STRANSKY +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |ESELGROTH RDO | |APRE 50.72(b)(2)(vi) OFFSITE NOTIFICATION | | | | | | | | | | | | | | +-----+----------+-------+--------+--------------+--+--------+-----------------+ |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 +------------------------------------------------------------------------------+ | LICENSEE NOTIFIED STATE REGARDING VIOLATION OF SPDES PERMIT. | | | | THE LICENSEE NOTIFIED THE NEW YORK STATE DIVISION OF ENVIRONMENTAL | | CONSERVATION THAT THE TIME LIMIT FOR CIRCULATING WATER CHLORINATION WAS | | EXCEEDED, A VIOLATION OF THE LICENSEE'S SPDES PERMIT. THE LICENSEE REPORTED | | THAT THE CHLORINATION DURATION WAS FOUR HOURS, AS OPPOSED TO THE DAILY | | LIMIT OF TWO HOURS. CHLORINE CONCENTRATION IN THE DISCHARGE REMAINED WITHIN | | PERMIT LIMITS. THE LICENSEE NOTIFIED THE STATE OF THIS EVENT ON 10/7/96. | | THE NRC RESIDENT INSPECTOR HAS BEEN INFORMED BY THE LICENSEE. | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |FUEL CYCLE FACILITY | |EVENT NUMBER: 31113 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: GE NUCLEAR ENERGY |NOTIFICATION DATE: 10/08/96 | | RXTYPE: URANIUM FUEL FABRICATION |NOTIFICATION TIME: 11:20 [ET]| |COMMENTS: LEU CONVERSION (UF6 TO UO2) |EVENT DATE: 10/07/96 | | LEU FABRICATION |EVENT TIME: 16:00[EDT]| | LWR COMMERICAL FUEL |LAST UPDATE DATE: 10/08/96 | | CITY: WILMINGTON REGION: 2 +-----------------------------+ | COUNTY: NEW HANOVER STATE: NC |PERSON ORGANIZATION| |LICENSE#: SNM-1097 AGREEMENT: Y |JOHN POTTER RDO | | DOCKET: 07001113 |COMBS/TROSKOSKI EO | +------------------------------------------------+ | |NRC NOTIFIED BY: PAULSON | | |HQ OPS OFFICER: CHAUNCEY GOULD | | +------------------------------------------------+ | |EMERGENCY CLASS: NOT APPLICABLE | | |10 CFR SECTION: | | |NBNL RESPONSE-BULLETIN | | | | | | | | | | | | | | +------------------------------------------------+-----------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | THE LICENSEE REPORTED LOSS OF GEOMETRY CONTROL AS THE RESULT OF TANK | | BULGING. | | | | THE BIENNIAL TANK WIDTH MEASUREMENT EVALUATION SHOWED THAT THE GEOMETRY | | CONTROL HAD BEEN EXCEEDED ON ONE TANK. THE LARGEST ACTUAL MEASUREMENT IN | | THE LOCALIZED BOWED AREA WAS 4.86 INCHES EXCEEDING THE ALLOWABLE 4.45 | | INCHES. THE SECOND CONTROL, CONCENTRATION, REMAINED IN EFFECT. THE MAXIMUM | | CONCENTRATION WAS LESS THAN 1 PPM U (LIMIT+16,000 PPM U). THUS NO UNSAFE | | CONDITION EXISTED. TOTAL URANIUM INVOLVED WAS 6 GRAMS. | | | | THE LICENSEE IS REPORTING THIS CONDITION PURSUANT TO NRC BULLETIN 91-01. | | THIS REPORT IS A 24 HOUR REPORT SINCE GEOMETRY WAS LOST AS AS RESULT OF | | TANK BULGING. GEOMETRY CONTROL WAS RE-ESTABLISHED WITHIN 4 HOURS BY USING | | LARGE TIMBERS AND "C" CLAMPS APPLIED TO THE LOWER HALF OF TANK. THE SLAB | | TANK WILL BE DRAINED AND ADDITIONAL INTERNAL STAYS WILL BE INSTALLED TO | | PREVENT BOWING ON THE LOWER HALF OF THE VESSEL AS PART OF LONG-TERM | | CORRECTIVE ACTIONS. | | | | THIS EVENT WAS OF A LOW SIGNIFICANCE SINCE THE CONCENTRATION LIMIT REMAINED | | INTACT (<1 PPM U IN SCRUBBER WATER INSIDE SLAB TANK). MULTIPLE FAILURE | | MODES WOULD BE REQUIRED BEFORE A CRITICALITY EXCURSION COULD BE POSSIBLE. | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 31114 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: FT CALHOUN REGION: 4 |NOTIFICATION DATE: 10/08/96 | |UNIT: [1] [ ] [ ] STATE: NE |NOTIFICATION TIME: 12:11 [ET]| |RX TYPE: [1] CE |EVENT DATE: 10/08/96 | +------------------------------------------------+EVENT TIME: 10:21[CDT]| |NRC NOTIFIED BY: MARCUS GUINN |LAST UPDATE DATE: 10/08/96 | |HQ OPS OFFICER: STEVE SANDIN +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |LINDA HOWELL RDO | |AIND 50.72(b)(2)(iii)(D) ACCIDENT MITIGATION | | | | | | | | | | | | | | +-----+----------+-------+--------+--------------+--+--------+-----------------+ |UNIT |SCRAM CODE|RX CRIT|INIT PWR| INIT RX MODE |CURR PWR| CURR RX MODE | +-----+----------+-------+--------+-----------------+--------+-----------------+ | 1 | N N 0 COLD SHUTDOWN | 0 COLD SHUTDOWN | | | | | | | | | +-----+---------------------------------------------+--------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | A CHANGE TO A STATION FUEL HANDLING EQUIPMENT OPERATIONS PROCEDURE RESULTED | | IN A CONDITION WHICH COULD HAVE PREVENTED MITIGATION OF RADIOLOGICAL | | CONSEQUENCES TO CONTROL ROOM OPERATORS. | | | | "FORT CALHOUN STATION (FCS) IS REQUIRED TO ANALYZE RADIOLOGICAL | | CONSEQUENCES TO CONTROL ROOM OPERATORS AS A RESULT OF UPDATED SAFETY | | ANALYSIS REPORT (USAR) CHAPTER 14 EVENTS AS SPECIFIED IN 10 CFR50 APPENDIX | | B CRITERION 19. THE INTENT OF THIS CRITERION IS TO DEMONSTRATE CONTROL | | ROOM HABITABILITY. | | | | "A DISCREPANCY BETWEEN FCS PROCEDURE OI-FH-1 (FUEL HANDLING EQUIPMENT | | OPERATION) AND DESIGN BASIS CONTROL ROOM HABITABILITY RADIOLOGICAL | | CONSEQUENCES CALCULATION ASSUMPTIONS (USAR CHAPTER 14.18) WAS IDENTIFIED IN | | THE FCS CONDITION REPORTING SYSTEM. SPECIFICALLY, CHANGES WERE MADE TO | | OI-FH-1 TO REMOVE THE REQUIREMENT FOR HAVING ONE TRAIN OF THE CONTROL ROOM | | FILTRATION SYSTEM IN OPERATION NOT JUST OPERABLE. THE CONTROL ROOM | | FILTRATION SYSTEM WAS OPERABLE WITH THE ABILITY TO ACTUATE THE VENTILATION | | ISOLATION ACTUATION SIGNAL (VIAS) WITH THE REDUNDANT RADIATION MONITORS, | | BUT THE NORMAL ALIGNMENT FOR THE RADIATION MONITORS WAS FROM THE SAME POWER | | SOURCE. THEREFORE, A LOSS OF POWER TO THE RADIATION MONITORS WOULD HAVE | | PREVENTED MITIGATION OF THE RADIOLOGICAL CONSEQUENCES TO THE CONTROL ROOM | | OPERATORS. | | | | "TO ASSURE MITIGATION OF RADIOLOGICAL RELEASES IN THE EVENT OF A FUEL | | HANDLING ACCIDENT, AN OPERATIONS MEMORANDUM HAS BEEN ISSUED TO REQUIRE THAT | | NO IRRADIATED FUEL MOVEMENT CAN OCCUR UNTIL BOTH CONTROL ROOM VENTILATION | | UNITS ARE PLACED IN THE FILTERED AIR MODE AND AT LEAST ONE OF THE UNITS IS | | IN SERVICE." | | | | THE CHANGE TO THE ABOVE PROCEDURE OCCURRED IN THE OUTAGE OF SPRING '95. THE | | LICENSEE INFORMED THE NRC RESIDENT INSPECTOR. | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 31115 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: DRESDEN REGION: 3 |NOTIFICATION DATE: 10/08/96 | |UNIT: [ ] [2] [3] STATE: IL |NOTIFICATION TIME: 13:59 [ET]| |RX TYPE: [1] GE-1,[2] GE-3,[3] GE-3 |EVENT DATE: 10/08/96 | +------------------------------------------------+EVENT TIME: 12:15[CDT]| |NRC NOTIFIED BY: DAVID GROMEK |LAST UPDATE DATE: 10/08/96 | |HQ OPS OFFICER: STEVE SANDIN +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |PATRICK HILAND RDO | |AOUT 50.72(b)(1)(ii)(B) OUTSIDE DESIGN BASIS | | |NLCO TECH SPEC LCO A/S | | | | | | | | | | | +-----+----------+-------+--------+--------------+--+--------+-----------------+ |UNIT |SCRAM CODE|RX CRIT|INIT PWR| INIT RX MODE |CURR PWR| CURR RX MODE | +-----+----------+-------+--------+-----------------+--------+-----------------+ | | | | | 2 | N Y 100 POWER OPERATION | 100 POWER OPERATION | | 3 | N Y 81 POWER OPERATION | 81 POWER OPERATION | +-----+---------------------------------------------+--------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | BOTH UNITS REACTOR WATER CLEANUP SYSTEMS REMOVED FROM SERVICE FOLLOWING | | ENGINEERING REVIEW. | | | | "ON 10/8/96 AT 12:15, ENGINEERING NOTIFIED THE OPERATIONS DEPARTMENT THAT | | THE RWCU SYSTEM FOR BOTH UNITS 2 AND 3 IS OUTSIDE ITS DESIGN BASES. THE | | RWCU PRESSURE CONTROL VALVE HAD BEEN MODIFIED AND AN ASSOCIATED RESTRICTING | | ORIFICE REMOVED. THEREFORE, IF THE RWCU PCV WERE TO FAIL OPEN, THE RWCU | | SYSTEM WOULD NOT BE ABLE TO MAINTAIN PRESSURE WITHIN THE DESIGN LIMITS OF | | THE LOW PRESSURE PIPING." | | | | THE LICENSEE IS IN THE PROCESS OF SECURING AND ISOLATING THE RWCU SYSTEMS | | FOR BOTH UNITS PENDING LONG TERM CORRECTIVE ACTIONS. THIS PLACES BOTH | | UNITS IN A TS ACTION STATEMENT REQUIRING ALTERNATE CONDUCTIVITY MONITORING. | | THE PRESSURE CONTROL VALVES (PCVs) WERE INITIALLY MODIFIED IN 1978 WITH | | FURTHER MODIFICATIONS PERFORMED ON 6/25/93. THE DATE THAT THE FLOW | | RESTRICTING ORIFICES WERE REMOVED IS UNKNOWN. THIS DISCREPANCY WAS | | DISCOVERED DURING AN ENGINEERING REVIEW OF THE USAR SYSTEM DESCRIPTION. | | | | THE LICENSEE WILL INFORM THE NRC RESIDENT INSPECTOR. | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 31116 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: WATERFORD REGION: 4 |NOTIFICATION DATE: 10/08/96 | |UNIT: [3] [ ] [ ] STATE: LA |NOTIFICATION TIME: 15:29 [ET]| |RX TYPE: [3] CE |EVENT DATE: 10/08/96 | +------------------------------------------------+EVENT TIME: 14:06[CDT]| |NRC NOTIFIED BY: TERRY SCHRECKENGAST |LAST UPDATE DATE: 10/08/96 | |HQ OPS OFFICER: STEVE SANDIN +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |LINDA HOWELL RDO | |APRE 50.72(b)(2)(vi) OFFSITE NOTIFICATION | | | | | | | | | | | | | | +-----+----------+-------+--------+--------------+--+--------+-----------------+ |UNIT |SCRAM CODE|RX CRIT|INIT PWR| INIT RX MODE |CURR PWR| CURR RX MODE | +-----+----------+-------+--------+-----------------+--------+-----------------+ | 3 | N Y 100 POWER OPERATION | 100 POWER OPERATION | | | | | | | | | +-----+---------------------------------------------+--------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | LICENSEE NOTIFIED THE COAST GUARD OF A TUGBOAT MISHAP INVOLVING THE INTAKE | | STRUCTURE DOLPHINS. | | | | "INFORMED THE US COAST GUARD 8TH DISTRICT THAT TWO INTAKE STRUCTURE | | DOLPHINS WERE STRUCK BY A TUGBOAT. THE DOLPHIN FURTHEST UPRIVER WAS GRAZED | | WITH NO OBVIOUS DAMAGE, THE DOLPHIN NEXT TO THE FURTHEST DOLPHIN DOWNSTREAM | | WAS VISIBLY BENT." | | | | THE LICENSEE INFORMED THE NRC RESIDENT INSPECTOR. | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 31117 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: HATCH REGION: 2 |NOTIFICATION DATE: 10/08/96 | |UNIT: [1] [ ] [ ] STATE: GA |NOTIFICATION TIME: 19:45 [ET]| |RX TYPE: [1] GE-4,[2] GE-4 |EVENT DATE: 10/08/96 | +------------------------------------------------+EVENT TIME: 16:00[EDT]| |NRC NOTIFIED BY: BARRY COLEMAN |LAST UPDATE DATE: 10/08/96 | |HQ OPS OFFICER: STEVE SANDIN +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |JOHN POTTER 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 +------------------------------------------------------------------------------+ | UNIT 1 EXPERIENCED VARIOUS ESF ACTUATIONS FOLLOWING THE LOSS OF THE "B" | | REACTOR PROTECTION SYSTEM MOTOR GENERATOR (RPS MG) FOR REASONS UNKNOWN. | | | | AT 1600EDT THE "B" RPS OUTPUT BREAKER TRIPPED WHICH RESULTED IN A HALF | | SCRAM AND A PARTIAL GROUP 2 (H2O2 ANALYZER, FISSION PRODUCT MONITOR) AND | | GROUP 5 (RWCU) ISOLATIONS INCLUDING SOME PRIMARY CONTAINMENT PURGE AND VENT | | VALVE ISOLATIONS. THE CAUSE OF THE RPS MG TRIP IS UNKNOWN, HOWEVER, THE | | 600VAC BUS "D" HAD PREVIOUSLY EXHIBITED INTERMITTENT GROUNDS. THERE WAS NO | | MAINTENANCE OR TESTING IN PROGRESS AT THE TIME. ALL SYSTEMS FUNCTIONED AS | | REQUIRED AND HAVE BEEN RESTORED WITH THE "B" RPS BUS REENERGIZED FROM ITS | | ALTERNATE POWER SUPPLY. THE LICENSEE IS EVALUATING THIS EVENT TO IDENTIFY | | THE ROOT CAUSE. | | | | THE LICENSEE WILL INFORM THE NRC RESIDENT INSPECTOR. | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 31118 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: VERMONT YANKEE REGION: 1 |NOTIFICATION DATE: 10/08/96 | |UNIT: [1] [ ] [ ] STATE: VT |NOTIFICATION TIME: 23:59 [ET]| |RX TYPE: [1] GE-4 |EVENT DATE: 10/08/96 | +------------------------------------------------+EVENT TIME: 22:49[EDT]| |NRC NOTIFIED BY: EMPEY |LAST UPDATE DATE: 10/08/96 | |HQ OPS OFFICER: JOHN MacKINNON +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |PETE ESELGROTH 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 | A N 0 COLD SHUTDOWN | 0 COLD SHUTDOWN | | | | | | | | | +-----+---------------------------------------------+--------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | BACKFILLING OF A REFERENCE LEG CAUSED AN ALTERNATE ROD INSERTION ACTUATION. | | THERE WAS NO ROD MOVEMENT DUE TO THE ALTERNATE ROD INSERTION ACTUATION. | | | | AN INSTRUMENT & CONTROL TECHNICIAN WAS BACKFILLING THE REFERENCE LEG FOR | | ONE OF THE WIDE RANGE REACTOR VESSEL WATER LEVEL INSTRUMENTS. THE | | INSTRUMENT & CONTROL TECHNICIAN WAS UNAWARE THAT THE REFERENCE LEG HE WAS | | BACKFILLING IS SHARED WITH THE REFERENCE LEG FOR TWO OF THE REACTOR VESSEL | | NARROW RANGE WATER LEVEL CONTROL INSTRUMENTS THAT ACTUATE THE ALTERNATE ROD | | INSERTION SYSTEM ON LOW LOW REACTOR VESSEL WATER LEVEL. BACKFILLING THE | | REFERENCE LEG INADVERTENTLY CAUSED THE LOW LOW REACTOR VESSEL WATER LEVEL | | SIGNAL. THE LOW LOW REACTOR VESSEL WATER LEVEL SIGNAL CAUSED THE ALTERNATE | | ROD INSERTION SIGNAL WHICH DEPRESSURIZED THE SCRAM AIR HEADER. THERE WAS NO | | ROD MOVEMENT SINCE THE RODS WERE ALREADY FULLY INSERTED INTO THE CORE. THE | | REACTOR SCRAM SIGNALS WERE RESET AND THE LICENSEE IS INVESTIGATING THIS | | EVENT. | | | | THE RESIDENT INSPECTOR WILL BE INFORMED BY THE LICENSEE OF THIS EVENT. | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 31119 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: DUANE ARNOLD REGION: 3 |NOTIFICATION DATE: 10/09/96 | |UNIT: [1] [ ] [ ] STATE: IA |NOTIFICATION TIME: 02:33 [ET]| |RX TYPE: [1] GE-4 |EVENT DATE: 10/08/96 | +------------------------------------------------+EVENT TIME: 22:54[CDT]| |NRC NOTIFIED BY: CHAISSON |LAST UPDATE DATE: 10/09/96 | |HQ OPS OFFICER: JOHN MacKINNON +-----------------------------+ +------------------------------------------------+ 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 | +-----+----------+-------+--------+-----------------+--------+-----------------+ | 1 | N Y 94 POWER OPERATION | 94 POWER OPERATION | | | | | | | | | +-----+---------------------------------------------+--------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | HIGH PRESSURE COOLANT INJECTION (HPCI) SYSTEM DECLARED INOPERABLE DURING A | | QUARTERLY SURVEILLANCE TEST. | | | | DURING THE PERFORMANCE OF SURVEILLANCE TEST PROCEDURE 42A026-Q (STEAM LINE | | HIGH DELTA PRESSURE TEST) HPCI "B" LOGIC CAUSED HPCI CONTAINMENT OUTBOARD | | ISOLATION VALVE TO UNEXPECTEDLY CLOSE. ALL OTHER EMERGENCY CORE COOLING | | SYSTEMS AND THE REACTOR CORE ISOLATION COOLING SYSTEM WERE FULLY OPERABLE | | DURING THE TIME PERIOD HPCI WAS DECLARED INOPERABLE PER TECHNICAL | | SPECIFICATION 3.5.D.2 (14 DAYS TO RETURN HPCI TO SERVICE). AT 0059CDT | | 10/09/96 HPCI WAS DECLARED OPERABLE AND RETURNED TO SERVICE. PRELIMINARY | | INVESTIGATION INDICATES THAT OPERATOR ERROR CAUSED HPCI CONTAINMENT | | OUTBOARD ISOLATION VALVE TO CLOSE. | | | | THE NRC RESIDENT INSPECTOR WAS INFORMED OF THIS EVENT. | +------------------------------------------------------------------------------+