U.S. Nuclear Regulatory Commission Operations Center Event Reports For 10/01/98 - 10/02/98 ** EVENT NUMBERS ** 34856 34857 34858 34859 34860 34861 34862 +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 34856 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: THREE MILE ISLAND REGION: 1 |NOTIFICATION DATE: 09/30/98 | |UNIT: [1] [ ] [ ] STATE: PA |NOTIFICATION TIME: 14:09 [ET]| |RX TYPE: [1] B&W-L-LP,[2] B&W-L-LP |EVENT DATE: 09/30/98 | +------------------------------------------------+EVENT TIME: 13:20[EDT]| |NRC NOTIFIED BY: JOHN SCHORK |LAST UPDATE DATE: 10/01/98 | |HQ OPS OFFICER: BOB STRANSKY +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |JOHN CARUSO RDO | |AOUT 50.72(b)(1)(ii)(B) OUTSIDE DESIGN BASIS | | | | | | | | | | | | | | +-----+----------+-------+--------+--------------+--+--------+-----------------+ |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 +------------------------------------------------------------------------------+ | IMPROPERLY INSTALLED THERMOLAG FIRE BARRIER | | | | DURING THE REMOVAL OF THERMOLAG MATERIAL, A FIRE RESISTANT MATERIAL THAT | | WAS INSTALLED IN 1987 TO MEET THE REQUIREMENTS OF 10 CFR PART 50, APPENDIX | | R, WORKERS OBSERVED THAT SEVERAL PORTIONS OF FIRE BARRIER "1 FHC-FB-06" | | LOCATED IN FIRE ZONE FH-FZ-1 IN THE 281' ELEVATION OF THE TMI-1 FUEL | | HANDLING BUILDING DID NOT HAVE REQUIRED FILLET OF TROWEL GRADE MATERIAL | | 330-1. THE THERMOLAG WAS BEING INSPECTED IN PREPARATION FOR ITS REPLACEMENT | | WITH MECATISS. | | | | THE CONTROL ROOM WAS NOTIFIED AND A FIRE WATCH WAS POSTED IN ACCORDANCE | | WITH THE SITE FIRE PROTECTION PROGRAM PROCEDURE. REPAIRS WERE MADE TO THE | | NONCONFORMING SEAMS. AT 1320, THE PLANT REVIEW GROUP CONCLUDED A REVIEW OF | | THE NONCONFORMING CONDITION AND DETERMINED THAT THE CONDITION WAS | | IMMEDIATELY REPORTABLE TO THE NRC IN ACCORDANCE WITH 10CFR50.72(b)(1)(ii) | | AS A CONDITION OUTSIDE OF THE DESIGN BASIS OF THE PLANT AND AS A SUPPLEMENT | | TO EARLIER SIMILAR NOTIFICATIONS. THE CONDITION WAS DETERMINED TO BE | | REPORTABLE BECAUSE THE FIRE BARRIER DID NOT CONFORM TO ITS DESIGN BASIS AND | | THERE WAS REASONABLE JUSTIFICATION THAT THE NONCONFORMING CONDITION WAS NOT | | THE RESULT OF AGE-RELATED DEGRADATION BUT RATHER AN INCORRECT INSTALLATION. | | | | THE NRC RESIDENT INSPECTOR HAS BEEN INFORMED OF THIS EVENT BY THE LICENSEE. | | | | * * * UPDATE ON 10/01/98 AT 1512 ET BY JOHN SCHORK TAKEN BY MACKINNON* * * | | | | DURING THE REMOVAL OF THERMOLAG MATERIAL, A FIRE RESISTANT MATERIAL THAT | | WAS INSTALLED IN 1987 AT THREE MILE ISLAND TO MEET THE REQUIREMENT OF | | APPENDIX "R" TO 10 CFR 50, WORKERS OBSERVED THAT SEVERAL PORTIONS OF FIRE | | BARRIER IAXC-FB-05 LOCATED IN FIRE ZONE AB-FZ-04 IN THE THREE MILE ISLAND | | UNIT 1 AUXILIARY BUILDING DID NOT HAVE A REQUIRED FILLET OF TROWEL GRADE | | MATERIAL 330-1. THE THERMOLAG WAS BEING INSPECTED IN PREPARATION TO | | REPLACE IT WITH MECATISS. SPECIFICALLY, VISUAL OBSERVATION DETERMINED THAT | | TROWEL GRADE MIX WAS NOT APPLIED TO TWO (2) SEAMS WHERE THERMOLAG | | INSULATION ABUTS THE REACTOR BUILDING EXTERIOR WALL AND ONE (1) SEAM WHERE | | THERMOLAG INSULATION ABUTS AGAINST A REACTOR BUILDING PENETRATION THERMOLAG | | INSULATION BOX AT THE TIME OF INSTALLATION OF THE THERMOLAG IN 1987. IN | | ADDITION, THERMOLAG INSTALLED AROUND A UNISTRUT WAS OBSERVED TO CONTAIN | | KAOWOOL FILLER MATERIAL AND DID NOT HAVE TROWEL GRADE MIX APPLIED TO THE | | END SEAM. | | | | THE CONTROL ROOM WAS NOTIFIED AND A FIRE WATCH WAS POSTED IN ACCORDANCE | | WITH THREE MILE ISLAND ADMINISTRATIVE PROCEDURE 1038, THE SITE FIRE | | PROTECTION PROGRAM PROCEDURE. REPAIRS ARE BEING MADE TO THE NON-CONFORMING | | SEAMS. | | | | AT 1450 HOURS, THE THREE MILE ISLAND PLANT REVIEW GROUP CONCLUDED A REVIEW | | OF THE NON-CONFORMING CONDITION AND DETERMINED THAT THE CONDITION WAS | | IMMEDIATELY REPORTABLE TO THE NRC IN ACCORDANCE WITH 10 CFR | | 50.72(b)(1)(ii)(B) AS A CONDITION OUTSIDE THE DESIGN BASIS OF THE PLANT AND | | AS A SUPPLEMENT TO EARLIER SIMILAR NOTIFICATIONS IN EVENT REPORTS 34682, | | AUGUST 25, 1998; 34769, SEPTEMBER 14, 1998 AND 34853, SEPTEMBER 29, 1998. | | THE CONDITION WAS DETERMINED TO BE REPORTABLE BECAUSE THE FIRE BARRIER DID | | NOT CONFORM TO ITS DESIGN BASIS AND THERE WAS REASONABLE JUSTIFICATION THAT | | THE NON-CONFORMING CONDITION WAS NOT THE RESULT OF AGE-RELATED DEGRADATION | | BUT RATHER AN INCORRECT INSTALLATION. | | | | ALL OF THE EARLIER EVENT REPORTS REFERENCED ABOVE AND THIS EVENT ARE | | RELATED IN THAT THEY HAVE THE SAME GENERAL CAUSE, INADEQUATE INSTALLATION, | | AND THE SAME GENERAL CONSEQUENCES, A FIRE BARRIER BEING OUTSIDE ITS DESIGN | | BASIS. THEREFORE, IN ACCORDANCE WITH THE GUIDANCE PROVIDED IN NUREG 1022 | | REV 1, EVENTS 34769, 34853 AND THIS REPORT WILL BE REPORTED IN A SUPPLEMENT | | TO LER 98-011, THAT REPORTED EVENT 34682. IN ADDITION, THERE IS SOME | | POSSIBILITY THAT ADDITIONAL SIMILAR CONDITIONS MAY BE DISCOVERED DURING THE | | COMPLETION OF THE PROJECT IN WHICH THERMOLAG IS BEING REPLACED WITH | | MECATISS. SUBSEQUENT SIMILAR EVENTS WILL BE REPORTED TO THE NRC VIA THE ENS | | SYSTEM AND BE REPORTED IN THE SUPPLEMENT TO LER 98-011 AND AS SUPPLEMENTAL | | IMMEDIATE REPORTS IN THIS EVENT REPORT 34856. THE SUPPLEMENT WILL BE ISSUED | | WHEN THE MECATISS INSTALLATION HAS BEEN COMPLETED (APPROXIMATELY MARCH 31, | | 1999). R1DO (JOHN CARUSO) NOTIFIED. | | | | THE NRC RESIDENT INSPECTOR WAS NOTIFIED OF THIS UPDATE BY THE LICENSEE. | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 34857 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: BROWNS FERRY REGION: 2 |NOTIFICATION DATE: 10/01/98 | |UNIT: [ ] [2] [ ] STATE: AL |NOTIFICATION TIME: 03:23 [ET]| |RX TYPE: [1] GE-4,[2] GE-4,[3] GE-4 |EVENT DATE: 10/01/98 | +------------------------------------------------+EVENT TIME: 00:47[CDT]| |NRC NOTIFIED BY: DAVENPORT |LAST UPDATE DATE: 10/01/98 | |HQ OPS OFFICER: CHAUNCEY GOULD +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |ANN BOLAND 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/R Y 100 POWER OPERATION | 0 HOT SHUTDOWN | | | | | +-----+---------------------------------------------+--------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | THE PLANT HAD A REACTOR SCRAM FROM 100% POWER DUE TO A MAIN GENERATOR TRIP. | | | | THIS OCCURRED WHEN THE STATOR COOLANT SYSTEM TEMPERATURE CONTROL VALVE | | FAILED, CAUSING THE MAIN GENERATOR STATOR OUTLET TEMPERATURE TO REACH ITS | | HIGH TEMPERATURE SETPOINT OF 81øC FOR >70 SECONDS. THIS CONDITION MAKES UP | | A TWO OUT OF THREE LOGIC CAUSING A MAIN GENERATOR TRIP WHICH RESULTED IN AN | | AUTOMATIC REACTOR SCRAM. THE RESULTING SCRAM CAUSED WATER LEVEL TO GO | | BELOW THE LOW LEVEL SETPOINT WHICH GENERATED A REDUNDANT SCRAM SIGNAL AND | | INITIATED THE PCIS FUNCTION FOR PCIS GROUPS 2(PRIMARY CONTAINMENT), | | 3(RWCU), 6(SECONDARY CONTAINMENT) AND 8(TIP SYSTEM). THE RECIRCULATION | | PUMP TRIP ON EOC-RPT ACTUATION OCCURRED AS EXPECTED ON THE MAIN TURBINE | | TRIP. ALL RODS FULLY INSERTED, NO SAFETY RELIEF VALVES LIFTED AND NO ECCS | | INITIATED. THEY ARE CONTINUING THE EVALUATION OF THIS EVENT. | | | | THE RESIDENT INSPECTOR WAS NOTIFIED. | | | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |FUEL CYCLE FACILITY | |EVENT NUMBER: 34858 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: GE NUCLEAR ENERGY |NOTIFICATION DATE: 10/01/98 | | RXTYPE: URANIUM FUEL FABRICATION |NOTIFICATION TIME: 13:54 [ET]| |COMMENTS: LEU CONVERSION (UF6 TO UO2) |EVENT DATE: 09/30/98 | | LEU FABRICATION |EVENT TIME: 14:30[EDT]| | LWR COMMERICAL FUEL |LAST UPDATE DATE: 10/01/98 | | CITY: WILMINGTON REGION: 2 +-----------------------------+ | COUNTY: NEW HANOVER STATE: NC |PERSON ORGANIZATION| |LICENSE#: SNM-1097 AGREEMENT: Y |ANN BOLAND RDO | | DOCKET: 07001113 |FRED COMBS EO | +------------------------------------------------+ROSEMARY HOGAN IRD | |NRC NOTIFIED BY: LON E. PAULSON | | |HQ OPS OFFICER: STEVE SANDIN | | +------------------------------------------------+ | |EMERGENCY CLASS: NOT APPLICABLE | | |10 CFR SECTION: | | |NBNL RESPONSE-BULLETIN | | | | | | | | | | | | | | +------------------------------------------------+-----------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | 24 HOUR NRC 91-01 BULLETIN REPORT INVOLVING A LOSS OF GEOMETRY CONTROL ON A | | ROTARY SLUGGER PRESS. | | | | "AT APPROXIMATELY 2:30 P.M. ON SEPTEMBER 30, 1998 DURING SURVEILLANCE ON | | URANIUM POWDER PROCESSING EQUIPMENT (ROTARY SLUGGER) LOCATED IN THE | | GADOLINA SHOP, IT WAS DISCOVERED THAT A LOSS OF GEOMETRY CONTROL HAD | | OCCURRED. ONE OF 16 LOWER PUNCHES WAS NOT INSTALLED FOLLOWING MAINTENANCE. | | THIS RESULTED IN URANIUM OXIDE (UO2) SPILLING INTO THE CENTRAL DIE CAVITY | | CHAMBER, RESULTING IN A LOSS OF GEOMETRY. NO UNSAFE CONDITION EXISTED. | | | | "THE BASIS OF SAFETY ON THIS ROTARY SLUGGER RELIES ON GEOMETRY AND MASS | | CONTROLS. THE UO2 MASS OF MATERIAL REMOVED FROM THE ROTARY SLUGGER | | INTERNALS WAS ESTIMATED TO BE 20 KGS UO2, WHICH IS BELOW THE ESTABLISHED | | SAFE MASS LIMIT OF 40 KGS UO2 AT 5% ENRICHMENT. | | | | "THE GEOMETRY CONTROL WAS REESTABLISHED WITHIN 4 HOURS BY SHUTTING DOWN THE | | SLUGGER AND REMOVING THE MATERIAL TO SAFE GEOMETRY CONTAINERS. THIS EVENT | | IS REPORTED PURSUANT TO NRC BULLETIN 91-01 (WITHIN 24 HOURS) DUE TO A LOSS | | OF GEOMETRY CONTROL. THE SLUGGER REMAINS SHUTDOWN PENDING INVESTIGATION | | AND IMPLEMENTATION OF CORRECTIVE ACTIONS." | | | | THE ROTARY SLUGGER HAD BEEN OPERATED A MAXIMUM OF 16 HOURS (2 SHIFTS) IN | | THE ABOVE CONFIGURATION. THE LICENSEE WILL INFORM STATE/LOCAL AGENCIES AND | | THE NRC REGION II OFFICE. | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 34859 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: MILLSTONE REGION: 1 |NOTIFICATION DATE: 10/01/98 | |UNIT: [ ] [ ] [3] STATE: CT |NOTIFICATION TIME: 14:22 [ET]| |RX TYPE: [1] GE-3,[2] CE,[3] W-4-LP |EVENT DATE: 10/01/98 | +------------------------------------------------+EVENT TIME: 12:00[EDT]| |NRC NOTIFIED BY: STEVE LAWHEAD |LAST UPDATE DATE: 10/01/98 | |HQ OPS OFFICER: JOHN MacKINNON +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |JOHN CARUSO 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 +------------------------------------------------------------------------------+ | APPROXIMATELY 100 GALLONS OF FUEL OIL WAS SPILLED ON THE OWNER CONTROLLED | | AREA. OFFSITE NOTIFICATION WAS MADE TO CT DEPARTMENT OF ENVIRONMENTAL | | PROTECTION. | | | | AMTRAK WAS INSTALLING A TRANSFORMER NORTH OF THE MAIN SWITCHYARD WHEN A | | DELIVERY TRUCK ASSOCIATED WITH THIS PROJECT BACKED OVER STEEL LYING IN THE | | GRASS, PUNCTURING ITS FUEL TANK. IT IS ESTIMATED THAT 100 GALLONS OF | | DIESEL FUEL SPILLED ON THE GROUND (NORTHEAST UTILITY PROPERTY). THE VENDOR | | TOOK IMMEDIATE CORRECTIVE ACTION TO CONTAIN THE SPILL. THE VENDOR ALSO | | REPORTED THE SPILL TO THE CT DEPARTMENT OF ENVIRONMENTAL PROTECTION PER | | THEIR PROCEDURES AND CONTACTED ADDITIONAL PERSONNEL FOR CLEANUP, WHO SHOULD | | ARRIVE AROUND 1330 ET. NO RELEASE WAS MADE TO THE WATER OR THE WETLANDS. | | | | THE NRC RESIDENT INSPECTOR WAS NOTIFIED OF THE EVENT BY THE LICENSEE. | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 34860 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: OCONEE REGION: 2 |NOTIFICATION DATE: 10/01/98 | |UNIT: [1] [2] [3] STATE: SC |NOTIFICATION TIME: 19:28 [ET]| |RX TYPE: [1] B&W-L-LP,[2] B&W-L-LP,[3] B&W-L-LP |EVENT DATE: 10/01/98 | +------------------------------------------------+EVENT TIME: 18:55[EDT]| |NRC NOTIFIED BY: DAN GREENE |LAST UPDATE DATE: 10/02/98 | |HQ OPS OFFICER: JOHN MacKINNON +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |ANN BOLAND RDO | |AOUT 50.72(b)(1)(ii)(B) OUTSIDE DESIGN BASIS |JOHN ZWOLINSKI EO | |NLCO TECH SPEC LCO A/S |ROSEMARY HOGAN, MGR IRD | | | | | | | | | | +-----+----------+-------+--------+--------------+--+--------+-----------------+ |UNIT |SCRAM CODE|RX CRIT|INIT PWR| INIT RX MODE |CURR PWR| CURR RX MODE | +-----+----------+-------+--------+-----------------+--------+-----------------+ | 1 | N Y 100 POWER OPERATION | 100 POWER OPERATION | | 2 | N Y 100 POWER OPERATION | 100 POWER OPERATION | | 3 | N Y 45 POWER OPERATION | 45 POWER OPERATION | +-----+---------------------------------------------+--------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | DURING A LARGE BREAK LOSS OF COOLANT ACCIDENT (LOCA) WITH NO OPERATOR | | ACTION THE REACTOR BUILDING SPRAY PUMP FLOW RATES WOULD BE EXCESSIVE FOR | | MAINTAINING AN ADEQUATE NET POSITIVE SUCTION HEAD (NPSH). | | | | AT 1855 ET ON 10/01/98 IT WAS DETERMINED THAT OCONEE NUCLEAR STATION WAS IN | | A CONDITION OUTSIDE THE DESIGN BASIS. IN THE EVENT OF A LARGE BREAK LOCA, | | WITH NO OPERATOR ACTION, THE REACTOR BUILDING SPRAY FLOW RATES WOULD BE | | EXCESSIVE AND, THEREFORE, WOULD NOT HAVE ADEQUATE NPSH TO BE CONSIDERED | | OPERABLE. THIS PLACES ALL THREE UNITS AT OCONEE NUCLEAR STATION UNDER THE | | ACTIONS OF TECHNICAL SPECIFICATION 3.0 (12 HOURS TO BE IN A HOT SHUTDOWN | | CONDITION). | | | | CORRECTIVE ACTION: | | | | THE LICENSEE WILL HAVE A DEDICATED PERSON TO THROTTLE THE REACTOR BUILDING | | SPRAY FLOW WITHIN APPROXIMATELY 5 MINUTES TO WITHIN THE NPSH REQUIREMENTS | | OF THE REACTOR BUILDING SPRAY PUMPS REQUIRED FLOW RATES. THERE ARE 2 | | REACTOR BUILDING SPRAY PUMPS PER UNIT. | | | | THE NRC RESIDENT INSPECTOR WILL BE NOTIFIED OF THIS EVENT BY THE LICENSEE. | | | | *** UPDATE ON 10/02/98 @ 0154 BY GREENE TO GOULD *** | | | | DEDICATED OPERATORS ARE IN PLACE TO ASSURE PROMPT THROTTLING OF REACTOR | | BUILDING SPRAY(RBS) FLOW AND SUPPORT OPERABILITY OF THE RBS SYSTEM ON ALL | | THREE UNITS. THESE COMPENSATORY ACTIONS WERE IMPLEMENTED IN ACCORDANCE | | WITH GENERIC LETTER 91-18, REV 1. TECHNICAL SPECIFICATION 3.0 WAS EXITED | | AT 0148 @ 10/02/98 ON ALL THREE UNITS. THEY ARE EXPEDITIOUSLY PURSUING | | CORRECTIVE ACTIONS TO RESOLVE THIS NON-CONFORMING CONDITION. | | | | THE RESIDENT INSPECTOR WILL BE NOTIFIED. | | | | REGION 2 RDO(BOLAND) WAS NOTIFIED. | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 34861 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: HADDAM NECK REGION: 1 |NOTIFICATION DATE: 10/01/98 | |UNIT: [1] [ ] [ ] STATE: CT |NOTIFICATION TIME: 20:54 [ET]| |RX TYPE: [1] W-4-LP |EVENT DATE: 10/01/98 | +------------------------------------------------+EVENT TIME: 16:50[EDT]| |NRC NOTIFIED BY: JOHN BOWER |LAST UPDATE DATE: 10/01/98 | |HQ OPS OFFICER: JOHN MacKINNON +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |JOHN CARUSO RDO | |APRE 50.72(b)(2)(vi) OFFSITE NOTIFICATION | | | |FEMA, DOE, USDA, EPA FAX | | |HHS, & DOT (NRC) FAX | | | | | | | +-----+----------+-------+--------+--------------+--+--------+-----------------+ |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 STATE OF CONNECTICUT DEPARTMENT OF ENVIRONMENTAL PROTECTION WAS | | NOTIFIED THAT APPROXIMATELY 6000 GALLONS OF SLIGHTLY RADIOACTIVE WATER | | (BELOW LIMITS) HAD LEACHED INTO THE GROUND SINCE 08/26/98. | | | | THE LICENSEE MADE AN OFFSITE NOTIFICATION TO THE CONNECTICUT DEPARTMENT OF | | ENVIRONMENTAL PROTECTION AFTER SAMPLES TAKEN TODAY INDICATED THAT 6000 | | GALLONS OF RAINWATER AT 4.19E-05 MICROCURIE PER MILLILITER OF TRITIUM AND | | 6.09E-08 MICROCURIE PER MILLILITER OF CESIUM-137 HAD LEAKED THROUGH CRACKS | | INTO THE GROUND WATER FROM THEIR DIKED LIQUID WASTE HOLDUP TANK AREA SINCE | | 08/26/98. THE LICENSEE'S TECHNICAL SPECIFICATION DISCHARGE LIMIT FOR | | TRITIUM IS 1E-03 MICROCURIE PER MILLILITER AND 1E-06 MICROCURIE PER | | MILLILITER FOR CESIUM-137. | | | | CORRECTIVE ACTIONS: | | | | 1. EVALUATE HOW TO REPAIR LEAKS IN THE DIKE | | 2. INTEND TO REACTIVATE SUMP PUMP IN DIKED AREA | | 3. EVALUATE WATER LEAKAGE INTO GROUND FOR REMEDIATION | | | | THE NRC RESIDENT INSPECTOR WILL BE NOTIFIED OF THIS OFFSITE NOTIFICATION BY | | THE LICENSEE. | | | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 34862 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: MILLSTONE REGION: 1 |NOTIFICATION DATE: 10/01/98 | |UNIT: [ ] [ ] [3] STATE: CT |NOTIFICATION TIME: 21:24 [ET]| |RX TYPE: [1] GE-3,[2] CE,[3] W-4-LP |EVENT DATE: 10/01/98 | +------------------------------------------------+EVENT TIME: 18:25[EDT]| |NRC NOTIFIED BY: PALONE |LAST UPDATE DATE: 10/01/98 | |HQ OPS OFFICER: JOHN MacKINNON +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |JOHN CARUSO RDO | |ASHU 50.72(b)(1)(i)(A) PLANT S/D REQD BY TS | | |NLCO TECH SPEC LCO A/S | | | | | | | | | | | +-----+----------+-------+--------+--------------+--+--------+-----------------+ |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 +------------------------------------------------------------------------------+ | TECHNICAL SPECIFICATION 3.0.3 ENTERED DUE TO BOTH TRAINS OF CONTAINMENT | | RECIRCULATION SPRAY SYSTEMS BEING OUT OF SERVICE (ONE DUE TO PLANNED | | MAINTENANCE AND THE OTHER DUE TO REPEATED BLOWN FUSES IN ITS 125VAC VITAL | | INSTRUMENT INVERTER). | | | | # 1 125VAC VITAL INSTRUMENT INVERTER BLEW FUSES IN SEPTEMBER AND IT BLEW | | MULTIPLE FUSES AGAIN TODAY AT 1825 ET WHICH RENDERED THE "A" SEQUENCER | | INOPERABLE. THIS WOULD PREVENT THE AUTOSTART OF THE "A" TRAIN CONTAINMENT | | RECIRCULATION SPRAY SYSTEM. WITH TRAIN "B" CONTAINMENT RECIRCULATION SPRAY | | SYSTEM OUT OF SERVICE FOR MAINTENANCE AND TRAIN "A" CONTAINMENT | | RECIRCULATION SPRAY SYSTEM INOPERABLE DUE TO # 1 125 VAC VITAL INSTRUMENT | | INVERTER BEING DECLARED INOPERABLE DUE TO REPEATED BLOWN FUSES THE LICENSEE | | ENTERED TECHNICAL SPECIFICATION 3.0.3 AT 1825 ET. TECHNICAL SPECIFICATION | | 3.0.3 GIVES THE LICENSEE ONE HOUR TO REPAIR THE PROBLEM AND THEN AN | | ADDITIONAL 6 HOURS TO BE IN MODE 3 (HOT STANDBY) IF THE PROBLEM CANNOT BE | | REPAIRED WITHIN THE ONE HOUR TIME LIMIT. | | | | THE NRC RESIDENT INSPECTOR WAS NOTIFIED OF THIS EVENT BY THE LICENSEE. | | | | * * * UPDATE AT 2254 ET ON 10/01/98 BY LAWHEAD BY MACKINNON * * * | | | | AT 2250 ET TECHNICAL SPECIFICATION 3.0.3 WAS EXITED AFTER TRAIN "B" OF THE | | CONTAINMENT RECIRCULATION SPRAY SYSTEM WAS DECLARED FULLY OPERABLE. REACTOR | | POWER IS AT 48% AND THE LICENSEE WILL STABILIZE REACTOR POWER AT 48% AND | | TROUBLESHOOT WHY FUSES HAVE BLOWN ON # 1 125VAC VITAL INSTRUMENT INVERTER. | | R1DO (JOHN CARUSO) NOTIFIED. | | | | THE NRC RESIDENT INSPECTOR WILL BE UPDATED ON THIS UPDATE BY THE LICENSEE. | +------------------------------------------------------------------------------+