U.S. Nuclear Regulatory Commission Operations Center Event Reports For 08/31/94 - 09/01/94 ** EVENT NUMBERS ** 27726 27729 27730 27731 27732 27733 27734 27735 27736 27737 +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 27726 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: HATCH REGION: 2 |NOTIFICATION DATE: 08/30/94 | |UNIT: [ ] [2] [ ] STATE: GA |NOTIFICATION TIME: 11:50 [ET]| |RX TYPE: [1] GE-4,[2] GE-4 |EVENT DATE: 08/30/94 | +------------------------------------------------+EVENT TIME: 10:05[CDT]| |NRC NOTIFIED BY: BUTLER |LAST UPDATE DATE: 08/31/94 | |HQ OPS OFFICER: TIM McGINTY +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |DOUGLAS COLLINS 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 +------------------------------------------------------------------------------+ | REACTOR SCRAM FROM 100% POWER DURING THE TRANSFER OF THE "A" RPS BUS FROM | | THE ALTERNATE POWER SUPPLY TO THE OUTPUT OF THE "2A" RPS MG SET. | | | | HATCH UNIT 2 WAS OPERATING AT 100% WITH THE "2A" RPS (REACTOR PROTECTION | | SYSTEM) MG SET OUT OF SERVICE. DURING THE MG SET OUTAGE, THE "A" RPS BUS | | WAS BEING SUPPLIED WITH THE ALTERNATE POWER SUPPLY. THE LICENSEE WAS IN | | THE PROCESS OF PLACING THE "2A" RPS MG SET BACK IN SERVICE. THE OPERATOR | | WAS TRANSFERRING POWER FROM "ALTERNATE" TO "NORMAL" FOR THE "A" RPS BUS | | WITH THE CONTROL SWITCH IN THE CONTROL ROOM. WHEN THE OPERATOR WENT TO | | "NORMAL", A FULL RPS ACTUATION AND A GROUPS 1, 2 AND 5 ISOLATIONS OCCURRED. | | THE UNIT RECEIVED A MAIN STEAM LINE ISOLATION, A STANDBY GAS TREATMENT | | SYSTEM AUTO-START, THE LOW-LOW SET RELIEF LOGIC SYSTEM ACTUATED AND THE | | CONTROL ROOM WENT TO THE PRESSURIZATION MODE ALONG WITH THE REACTOR SCRAM. | | REACTOR VESSEL WATER LEVEL WENT DOWN TO ABOUT -41" (BELOW THE LEVEL 2 | | SETPOINT OF -35"), SO HPCI (HIGH PRESSURE COOLANT INJECTION) AUTOMATICALLY | | INITIATED AND INJECTED. | | | | THE PLANT AND EQUIPMENT RESPONSE TO THE SCRAM WAS NORMAL WITH RESPECT TO | | THE ACTUATIONS THAT OCCURRED. ALL RODS FULLY INSERTED IN RESPONSE TO THE | | SCRAM SIGNAL, AND THERE WERE NO PROBLEMS WITH TRANSFERS TO OFF-SITE POWER | | SUPPLIES. ALL EDG's AND ECCS's ARE FULLY OPERABLE. A SAFETY RELIEF | | VALVE(S) LIFTED IN RESPONSE TO THE TRANSIENT (IN ACCORDANCE WITH THE | | LOW-LOW SET RELIEF LOGIC), AND ALL SRV's HAVE BEEN VERIFIED TO BE RE-SEATED | | AND THE LOGIC HAS BEEN RESET. BOTH RECIRCULATION PUMPS TRIPPED IN RESPONSE | | TO THE EVENT (THE CALLER WAS UNCERTAIN OF THE SPECIFIC CAUSE FOR THE | | RECIRCULATION PUMP TRIP). THE UNIT IS STABLE IN HOT SHUTDOWN, WITH AN | | INVESTIGATION INTO THE CAUSE OF THE EVENT UNDERWAY. CURRENTLY, THE LICENSEE | | HAS RESTARTED ONE RECIRCULATION PUMP, AND IS IN THE PROCESS OF STARTING THE | | SECOND PUMP. OPERATORS ARE ALSO IN THE PROCESS OF RE-OPENING THE MSIV's TO | | RE-ESTABLISH THE MAIN CONDENSER AS THE HEAT SINK (TORUS COOLING IS | | CURRENTLY IN-SERVICE). HPCI HAS BEEN SECURED, WITH ONLY CRDH (CONTROL ROD | | DRIVE HYDRAULIC SYSTEM) FLOW BEING UTILIZED TO MAINTAIN NORMAL REACTOR | | VESSEL LEVEL, AS REQUIRED. | | | | REGARDING THE INITIATING EVENT, WHEN THE OPERATOR WENT FROM "ALTERNATE" TO | | "NORMAL" WITH THE CONTROL SWITCH, HE MAINTAINS THAT HE DID NOT MOVE THE | | SWITCH TOO FAR. ACCORDING TO THE OPERATOR, THE LIGHT INDICATION FOR THE | | "B" RPS BUS WAS NEVER LOST (ALSO AN INDICATOR THAT HE DID NOT GO TOO FAR | | WITH THE SWITCH SINCE IT IS "BREAK" BEFORE "MAKE"). THUS, THE EXACT CAUSE | | FOR THE RPS ACTUATION AND ALMOST SIMULTANEOUS GROUP 1 ISOLATION IS UNKNOWN | | AND BEING INVESTIGATED. THERE IS NO ESTIMATE ON A POTENTIAL RESTART DATE. | | | | THE LICENSEE INFORMED THE RESIDENT INSPECTOR. | | | | ***UPDATE FROM LICENSEE TO HUFFMAN DURING MORNING STATUS CALL ON 8/31/94*** | | THE SWITCH WHICH TRANSFERS POWER FROM THE RPS BUS ALTERNATE POWER SUPPLY TO | | ITS NORMAL POWER SUPPLY WAS FOUND TO BE DEFECTIVE. THIS APPARENTLY RESULTED | | IN BOTH RPS BUSSES BEING MOMENTARILY DE-ENERGIZED DURING THE TRANSFER | | PROCESS. THE SWITCH WILL BE REPLACED BEFORE RESTART. R2DO(COLLINS) | | INFORMED. | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 27729 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: CATAWBA REGION: 2 |NOTIFICATION DATE: 08/31/94 | |UNIT: [ ] [2] [ ] STATE: SC |NOTIFICATION TIME: 00:04 [ET]| |RX TYPE: [1] W-4-LP,[2] W-4-LP |EVENT DATE: 08/30/94 | +------------------------------------------------+EVENT TIME: 21:30[EDT]| |NRC NOTIFIED BY: DON BRADLEY |LAST UPDATE DATE: 08/31/94 | |HQ OPS OFFICER: WILLIAM HUFFMAN +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |DOUGLAS COLLINS 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 STANDBY | | | | | +-----+---------------------------------------------+--------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | REACTOR TRIP FROM FULL POWER DURING I&C TROUBLESHOOTING. | | | | THE TRIP WAS UNCOMPLICATED AND ALL SYSTEMS FUNCTIONED AS REQUIRED. ALL RODS | | FULLY INSERTED. REACTOR IS STABLE AT 557 DEGREES AND 2235 PSI. DECAY HEAT | | IS BEING DISCHARGED TO THE MAIN CONDENSER AND NORMAL FEEDWATER HAS BEEN | | RE-ESTABLISHED. THERE IS NO INDICATION THAT ANY PRIMARY OR SECONDARY | | SAFETIES LIFTED DURING THE TRANSIENT. | | | | INSTRUMENT AND ELECTRICAL PERSONNEL WERE PERFORMING TROUBLESHOOTING REPAIRS | | ON A SEQUENCE OF EVENTS RECORDER SYSTEM. THE EVENTS RECORDER SYSTEM HAD | | BEEN LOGGING A SPURIOUS SAFETY INJECTION REACTOR TRIP DURING DAY SHIFT. | | INVESTIGATION HAD IDENTIFIED A SUSPECT OPTICAL ISOLATOR IN THE CIRCUITRY. | | THE REACTOR TRIP OCCURRED WHEN THE I&C TECHNICIANS OPENED A LINK IN THE | | CIRCUITRY TO ISOLATE THE PROBLEM OPTICAL ISOLATOR. | | | | INVESTIGATION INTO HOW THE ACTIONS OF THE I&C PERSONNEL ACTUALLY CAUSED THE | | TRIP IS STILL IN PROGRESS. THE LICENSEE PLANS TO REMAIN IN MODE 3 UNTIL | | RESTART WHICH SHOULD BE SOMETIME TODAY. | | | | THE NRC RESIDENT INSPECTOR HAS BEEN NOTIFIED. | | | | | | | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 27730 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: MONTICELLO REGION: 3 |NOTIFICATION DATE: 08/31/94 | |UNIT: [1] [ ] [ ] STATE: MN |NOTIFICATION TIME: 08:30 [ET]| |RX TYPE: [1] GE-3 |EVENT DATE: 08/31/94 | +------------------------------------------------+EVENT TIME: 06:30[CDT]| |NRC NOTIFIED BY: DUANE BISTODEAU |LAST UPDATE DATE: 08/31/94 | |HQ OPS OFFICER: JOSEPH SEBROSKY +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |WAYNE KROPP 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 84 POWER OPERATION | 84 POWER OPERATION | | | | | | | | | +-----+---------------------------------------------+--------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | THE LICENSEE NOTIFIED THE WATCH SUPERVISOR FOR THE FLIGHT SERVICE STATION | | IN PRINCETON MINNESOTA THAT ONE OF THE TWO OFFGAS STACK AIRCRAFT WARNING | | LIGHTS IS NOT FUNCTIONING. THE LICENSEE WILL REPAIR THE LIGHT. | | | | THE LICENSEE WILL INFORM THE RESIDENT INSPECTOR. | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 27731 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: ROBINSON REGION: 2 |NOTIFICATION DATE: 08/31/94 | |UNIT: [2] [ ] [ ] STATE: SC |NOTIFICATION TIME: 08:56 [ET]| |RX TYPE: [2] W-3-LP |EVENT DATE: 08/31/94 | +------------------------------------------------+EVENT TIME: 08:05[EDT]| |NRC NOTIFIED BY: DAVID CROOK |LAST UPDATE DATE: 08/31/94 | |HQ OPS OFFICER: JOSEPH SEBROSKY +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |DOUGLAS COLLINS 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 | +-----+----------+-------+--------+-----------------+--------+-----------------+ | 2 | N Y 100 POWER OPERATION | 100 POWER OPERATION | | | | | | | | | +-----+---------------------------------------------+--------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | THREE MAIN STEAM DRAIN LINE CONTAINMENT ISOLATION VALVES WERE FOUND TO BE | | IN THE OPEN POSITION. | | | | THE FOLLOWING IS A TEXT OF A FACSIMILE FROM THE LICENSEE: | | | | "ON AUGUST 31, 1994 AT 0805 HOURS, FOLLOWING REVIEW OF A REPORT OF THREE | | MAIN STEAM LINE DRAIN LINE ROOT ISOLATION VALVES BEING IN THE 'OPEN' | | POSITION, WE HAVE DETERMINED THAT A CONDITION EXISTED THAT WAS OUTSIDE THE | | DESIGN BASIS OF THE PLANT. SPECIFICALLY, ON AUGUST 29, 1994 MANUAL | | CONTAINMENT ISOLATION VALVES IN A ONE INCH LINE USED FOR ROOT ISOLATION OF | | THE MSIV ABOVE SEAT DRAINS IN EACH OF THE THREE MAIN STEAM LINES WERE | | IDENTIFIED TO BE IN THE 'OPEN' POSITION. ALTHOUGH MANUAL VALVES IN THE | | LINE DOWNSTREAM OF THESE CONTAINMENT ISOLATION VALVES WERE CLOSED, THE | | LINES ON WHICH THESE CLOSED VALVES ARE LOCATED CANNOT BE TAKEN CREDIT FOR | | REMAINING INTACT DURING A SEISMIC EVENT. UPON DISCOVERY OF THIS CONDITION, | | THE MISPOSITIONED VALVES WERE IMMEDIATELY PLACED IN THE CLOSED (OPERABLE) | | POSITION." END OF TEXT. | | | | THE DRAIN VALVES WERE OPENED DURING STARTUP OF THE UNIT APPROXIMATELY 24 | | DAYS AGO. THE PROBLEM WAS DISCOVERED BY AN OPERATOR WHO WAS DOING A | | WALKDOWN OF THE SYSTEM. THE VALVES HAVE A LOCAL POSITION INDICATION BUT DO | | NOT HAVE AN INDICATION IN THE CONTROL ROOM OF THEIR POSITION. THE LICENSEE | | IS CONTINUING THEIR INVESTIGATION OF THE PROBLEM. | | | | THE LICENSEE HAS INFORMED THE RESIDENT INSPECTOR. | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 27732 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: PEACH BOTTOM REGION: 1 |NOTIFICATION DATE: 08/31/94 | |UNIT: [ ] [3] [ ] STATE: PA |NOTIFICATION TIME: 09:13 [ET]| |RX TYPE: [2] GE-4,[3] GE-4 |EVENT DATE: 08/31/94 | +------------------------------------------------+EVENT TIME: 08:21[EDT]| |NRC NOTIFIED BY: ROBERT FISHER |LAST UPDATE DATE: 08/31/94 | |HQ OPS OFFICER: WILLIAM HUFFMAN +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |FRANK COSTELLO RDO | |ASHU 50.72(b)(1)(i)(A) PLANT S/D REQD BY TS | | | | | | | | | | | | | | +-----+----------+-------+--------+--------------+--+--------+-----------------+ |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 +------------------------------------------------------------------------------+ | INOPERABLE REACTOR BUILDING VENTILATION DAMPER. | | | | THE REACTOR BUILDING VENTILATION DAMPER (AD-30457) FAILED TO CLOSE ON A | | PLANNED EVOLUTION ISOLATION SIGNAL. THE VALVE IS REQUIRED TO MAINTAIN | | SECONDARY CONTAINMENT. SECONDARY CONTAINMENT HAS BEEN DECLARED INOPERABLE. | | THE TECH SPEC LCO FOR THIS SITUATION REQUIRES THAT THE REACTOR BE IN HOT | | SHUTDOWN IN 12 HOURS AND COLD SHUTDOWN WITHIN 36 HOURS. THE LICENSEE HOPES | | TO HAVE THE DAMPER REPAIRED BEFORE ACTUAL POWER REDUCTION IS NECESSARY. | | | | THE NRC RESIDENT INSPECTOR HAS BEEN NOTIFIED. | | | | ** UPDATE DATE/TIME:8/31/94 @ 1531 EDT ***FROM LICENSEE:MANNIX BY:McGINTY** | | THE CONDITION REQUIRING THE TECH SPEC SHUTDOWN WAS RESOLVED AT 1300 EDT ON | | 8/31/94. UNIT THREE HAS BEEN RETURNED TO 100% POWER. THE LICENSEE FOUND | | THAT A SOLENOID VALVE (ON/OFF AIR SUPPLY CONTROL VALVE) WAS STICKING, SO | | THEY REPLACED THE VALVE AND TESTED THE VALVE AND DAMPER. | | | | THE LICENSEE WILL INFORM THE RESIDENT INSPECTOR. HOO INFORMED THE R1DO | | (COSTELLO). | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |OTHER NUCLEAR MATERIAL | |EVENT NUMBER: 27733 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |LICENSEE: STATE OF MICHIGAN |NOTIFICATION DATE: 08/31/94 | | CITY: CLEMENS REGION: 3 |NOTIFICATION TIME: 12:05 [ET]| | COUNTY: STATE: MI |EVENT DATE: 08/31/94 | |LICENSE#: AGREEMENT: N |EVENT TIME: 12:05[EDT]| | DOCKET: |LAST UPDATE DATE: 08/31/94 | | +-----------------------------+ | |PERSON ORGANIZATION| | |WAYNE KROPP RDO | | |PAPARIELLO EO | +------------------------------------------------+YARDUMIAN IAT | |NRC NOTIFIED BY: DAVID MINNAR |BROCKMAN AEOD | |HQ OPS OFFICER: TIM McGINTY | | +------------------------------------------------+ | |EMERGENCY CLASS: NOT APPLICABLE | | |10 CFR SECTION: | | |NINF INFORMATION ONLY | | | | | | | | | | | | | | +------------------------------------------------+-----------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | POTENTIAL IMPROVISED EXPLOSIVE DEVICE FOUND IN THE TRUNK OF A CAR IN | | CLINTON TOWNSHIP MICHIGAN. RADIOACTIVE MATERIALS MAY ALSO BE PRESENT. | | | | MR. JACK GROBE OF REGION 3 CONTACTED THE OPERATIONS CENTER BECAUSE THE | | REGION HAD BEEN INFORMED OF A POTENTIAL BOMB FOUND IN THE TRUNK OF A CAR | | WHICH MAY ALSO HAVE RADIOACTIVE MATERIALS IN THE TRUNK. MR. DAVE MINNAAR, | | OF THE DEPARTMENT OF HEALTH FOR THE STATE OF MICHIGAN, PROVIDED THE INITIAL | | INFORMATION, IN CONJUNCTION WITH SGT. THOMAS OF THE MICHIGAN STATE POLICE. | | | | THE INDIVIDUAL WAS ARRESTED ON THE EVENING OF 8/30/94, IN CLINTON TOWNSHIP, | | MICHIGAN. CLINTON TOWNSHIP IS LOCATED NORTH OF DETROIT, AND JUST SOUTH OF | | MT. CLEMENS. THE SUSPECTS VEHICLE IS IN THE PARKING LOT OF THE CLINTON | | TOWNSHIP POLICE DEPARTMENT, LOCATED AT 22392 RASH RD. THE INDIVIDUAL WAS | | ARRESTED LAST NIGHT FOR PETTY LARCENY OF AUTOMOBILES. DURING INTERVIEWS | | WITH INDIVIDUAL, AND AFTER A SEARCH OF HIS VEHICLE, A TOOLBOX IN THE TRUNK | | IS BEING TREATED AS A "POTENTIAL IMPROVISED EXPLOSIVE DEVICE". THE TOOLBOX | | IS TAPED AND PADLOCKED, WITH ALUMINUM FOIL. THERE WERE ALSO 100 MERCURY | | SWITCHES FOUND IN THE TRUNK. THE INDIVIDUAL ALSO HAS STATED THAT THE TRUNK | | OF THE CAR AND/OR THE TOOLBOX CONTAINS NATURAL URANIUM, POTASSIUM | | PERMANGANATE, THORIUM, POLONIUM, URANIUM NITRATE AND AMERICIUM. THE | | INDIVIDUAL STATED THAT THE AMERICIUM WAS OBTAINED FROM SMOKE DETECTORS. | | INITIALLY, THE INDIVIDUAL WOULD NOT MOVE THE BOX WHEN REQUESTED, BECAUSE HE | | SAID THAT IT WAS "DANGEROUS". | | | | THE STATE OF MICHIGAN HAS SENT A TEAM TO THE SITE WITH SURVEY EQUIPMENT. | | THE INDIVIDUAL IS STILL BEING INTERVIEWED IN ORDER TO DECIDE ON A POSSIBLE | | COURSE OF ACTION. THE STATE MAY DECIDE TO PLACE THE TOOLBOX IN A "TOTAL | | CONTAINMENT DEVICE" FOR THE EVENTUAL PURPOSES OF DETONATING IT WITH AN | | ANCILLARY CHARGE. | | | | REGION 3 HAS MAINTAINED AN OPEN LINE IN THE INCIDENT RESPONSE CENTER FOR | | THE PURPOSES OF FACILITATING COMMUNICATIONS WITH THE STATE, STATE POLICE, | | NRC MANAGEMENT AND THE EPA. THE FOLLOWING HAVE BEEN INFORMED OF THE EVENT: | | REGION 3 (AXELSON, CREED, GROBE, KROPP), NMSS EO (PAPERIELLO), NMSS IAT | | (YARDUMIAN), AEOD (CONGEL, BROCKMAN, BAILEY), PUBLIC AFFAIRS HQ (KOPECK), | | EPA (LYMAN (HQ), BASSOU (R5)). THE STATE OF MICHIGAN, DEPARTMENT OF PUBLIC | | HEALTH (DAVID MINNAAR) AND STATE POLICE (SGT. THOMAS) HAVE PROVIDED THE | | BULK OF THE INFORMATION. | | | | ** UPDATE DATE/TIME:8/31/94 @ 1421 EDT FROM:SGT. THOMAS OF MSP BY:McGINTY** | | SGT. THOMAS OF THE MICHIGAN STATE POLICE INFORMED THE REGION 3 IRC (GROBE) | | THAT THE TOOLBOX HAD BEEN SUCCESSFULLY REMOTELY OPENED, AND DID NOT CONTAIN | | AN EXPLOSIVE DEVICE. THE INTERNALS OF THE TOOLBOX DID CONTAIN A NUMBER OF | | COMPONENTS DETERMINED TO BE RADIOACTIVE MATERIAL. THE MICHIGAN DEPARTMENT | | OF HEALTH (DYKSTRA) SURVEYED THE MATERIAL, AND DID CONFIRM THE PRESENCE OF | | THORIUM (OBTAINED FROM LANTERN MANTLES), SOME RADIOACTIVE ROCK AND GRAY | | POWDER, AND A GRAY PELLET (SPECIFIC SOURCES UNKNOWN). THE CLINTON TOWNSHIP | | POLICE DEPARTMENT HAS CONTROL OF THE MATERIAL. THE STATE POLICE BOMB SQUAD | | IS STANDING DOWN. | | | | MR. GROBE INFORMED THE EPA (LYMAN, HQ) OF THE FINDINGS, AND THE EPA HAS | | AGREED TO TAKE THE LEAD ON THE FOLLOWUP. THE STATE OF MICHIGAN (MINNAAR), | | NMSS EO (COMBS) AND IAT MEMBER (YARDUMIAN) WERE ALSO INFORMED. THE HOO | | NOTIFIED HQ PA (KOPECK), AEOD (BAILEY) AND THE R3DO (KROPP). | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 27734 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: MAINE YANKEE REGION: 1 |NOTIFICATION DATE: 08/31/94 | |UNIT: [1] [ ] [ ] STATE: ME |NOTIFICATION TIME: 13:35 [ET]| |RX TYPE: [1] CE |EVENT DATE: 08/31/94 | +------------------------------------------------+EVENT TIME: 06:00[EDT]| |NRC NOTIFIED BY: MCDOUGAL |LAST UPDATE DATE: 08/31/94 | |HQ OPS OFFICER: BOB STRANSKY +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: | | |NLTR LICENSEE 24 HR REPORT | | | | | | | | | | | | | | +-----+----------+-------+--------+--------------+--+--------+-----------------+ |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 +------------------------------------------------------------------------------+ | 24 HOUR REPORT REQUIRED BY PLANT TECHNICAL SPECIFICATIONS. | | | | WITH THE UNIT AT 100% POWER, 1 OF 2 115KV OFFSITE POWER LINES WAS REMOVED | | FROM SERVICE FOR MAINTENANCE. FOR PERSONNEL SAFETY REASONS, THE STATION | | RESERVE TRANSFORMER X14, WHICH IS THE ALTERNATE SOURCE OF POWER TO 4160V | | ESF BUSES 5 AND 6, WAS ALSO TAKEN OUT OF SERVICE. POWER TO THE 4160V BUSES | | CONTINUED TO BE SUPPLIED FROM 22KV STATION AUXILIARY TRANSFORMER (SAT) X24 | | (THE NORMAL SOURCE), AND BOTH EMERGENCY DIESEL GENERATORS WERE AVAILABLE | | THROUGHOUT THE EVOLUTION. HOWEVER, IN THE EVENT OF A REACTOR TRIP, NEITHER | | THE SAT NOR THE RESERVE TRANSFORMER WOULD HAVE BEEN AVAILABLE TO SUPPLY | | POWER TO THE 4160V BUSES. | | | | PLANT TECHNICAL SPECIFICATION 3.12.B.1 REQUIRES THAT A 24 HOUR REPORT BE | | MADE IN THE EVENT THAT THE 115KV OFFSITE LINES BECOME UNAVAILABLE, AND THAT | | THE 115 KV LINES BE RESTORED WITHIN 7 DAYS. THE PLANNED MAINTENANCE WAS | | COMPLETED AND THE 115KV LINE AND RESERVE TRANSFORMER WERE RESTORED AT 1200 | | EDT. THE RI WILL BE INFORMED. | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |OTHER NUCLEAR MATERIAL | |EVENT NUMBER: 27735 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |LICENSEE: CBC ENVIRONMENTAL LABS, INC |NOTIFICATION DATE: 08/31/94 | | CITY: OAK CREEK REGION: 3 |NOTIFICATION TIME: 15:29 [ET]| | COUNTY: STATE: WI |EVENT DATE: 08/24/94 | |LICENSE#: AGREEMENT: N |EVENT TIME: 00:00[CDT]| | DOCKET: |LAST UPDATE DATE: 08/31/94 | | +-----------------------------+ | |PERSON ORGANIZATION| | |KROPP RDO | | | | +------------------------------------------------+ | |NRC NOTIFIED BY: WILLETTE | | |HQ OPS OFFICER: BOB STRANSKY | | +------------------------------------------------+ | |EMERGENCY CLASS: NOT APPLICABLE | | |10 CFR SECTION: | | |NINF INFORMATION ONLY | | | | | | | | | | | | | | +------------------------------------------------+-----------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | LOSS OF LICENSED MATERIAL. | | | | ON 8/24/94, THE LICENSEE DISCOVERED THE LOSS OF TWO ELECTRON CAPTURE | | DETECTORS, EACH CONTAINING 15 mCi OF NI-63. THE DETECTORS WERE LAST SEEN | | DURING THE FIRST WEEK OF AUGUST, AND TRASH FROM THE FACILITY WAS DELIVERED | | TO A LANDFILL ON 8/18/94. NO RECOVERY ACTIONS ARE ANTICIPATED. THE | | LICENSEE HAS ALREADY CONTACTED THE REGION III OFFICE (REICHOLD). | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 27736 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: BROWNS FERRY REGION: 2 |NOTIFICATION DATE: 08/31/94 | |UNIT: [ ] [2] [ ] STATE: AL |NOTIFICATION TIME: 16:47 [ET]| |RX TYPE: [1] GE-4,[2] GE-4,[3] GE-4 |EVENT DATE: 08/31/94 | +------------------------------------------------+EVENT TIME: 12:48[CDT]| |NRC NOTIFIED BY: BOOHER |LAST UPDATE DATE: 08/31/94 | |HQ OPS OFFICER: BOB STRANSKY +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |COLLINS RDO | |AINA 50.72(b)(2)(iii)(A) POT UNABLE TO SAFE SD | | |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 Y 95 POWER OPERATION | 95 POWER OPERATION | | | | | +-----+---------------------------------------------+--------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | LOSS OF ECCS DIVISION 1 INVERTER CAUSED INOPERABILITY OF RCIC SYSTEM AND | | ALL ECCS SUBSYSTEMS. | | | | AT 1248CDT, THE LICENSEE RECEIVED AN ECCS ANALOG TRIP UNIT TROUBLE ALARM. | | UPON INVESTIGATION, THE LICENSEE DISCOVERED THAT THE DIVISION 1 ECCS | | INVERTER HAD FAILED, AND A SUPPLY FUSE TO THE INVERTER HAD BLOWN. THIS | | RESULTED IN THE LOSS OF THE RCIC FLOW CONTROLLER, 2/4 DRYWELL PRESSURE | | SENSOR CHANNELS, AND 2/4 REACTOR VESSEL WATER LEVEL SENSOR CHANNELS, AS | | WELL AS NUMEROUS OTHER MISCELLANEOUS SENSORS. LOSS OF THE DRYWELL PRESSURE | | AND REACTOR VESSEL WATER LEVEL CHANNELS RESULTED IN THE LICENSEE DECLARING | | ALL ECCS SUBSYSTEMS INOPERABLE. DUE TO THE INOPERABILITY OF ALL ECCS | | EQUIPMENT, THE UNIT ENTERED TECHNICAL SPECIFICATION 3.0.3, WHICH REQUIRES | | THAT THE UNIT BE IN HOT SHUTDOWN WITHIN 6 HOURS, AND IN COLD SHUTDOWN | | WITHIN 30 HOURS. | | | | THE LICENSEE DISCOVERED A FAULTY DIODE IN THE INVERTER, MADE REPAIRS, AND | | DECLARED RCIC AND THE ECCS SUBSYSTEMS OPERABLE AT 1350CDT. NO POWER | | REDUCTION HAD BEEN MADE AS A RESULT OF ENTRY IN TS 3.0.3. NO EQUIPMENT | | ACTUATED AS A RESULT OF THE LOSS OF POWER TO THE DIVISION 1 ECCS LOGIC. THE | | RI HAS BEEN INFORMED. | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 27737 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: DIABLO CANYON REGION: 4 |NOTIFICATION DATE: 08/31/94 | |UNIT: [1] [2] [ ] STATE: CA |NOTIFICATION TIME: 20:45 [ET]| |RX TYPE: [1] W-4-LP,[2] W-4-LP |EVENT DATE: 08/31/94 | +------------------------------------------------+EVENT TIME: 14:20[PDT]| |NRC NOTIFIED BY: PATTY |LAST UPDATE DATE: 08/31/94 | |HQ OPS OFFICER: BOB STRANSKY +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |MURRAY RDO | |AINA 50.72(b)(2)(iii)(A) POT UNABLE TO SAFE SD | | | | | | | | | | | | | | +-----+----------+-------+--------+--------------+--+--------+-----------------+ |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 | | | | | +-----+---------------------------------------------+--------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | LICENSEE DISCOVERED THAT SEVERAL PRINTED CIRCUIT BOARDS INSTALLED IN | | STATION BATTERY CHARGERS HAVE UNSOLDERED COMPONENTS. | | | | DURING ROOT CAUSE INVESTIGATION OF AN ELEVATED VOLTAGE CONDITION ON BATTERY | | CHARGER 1-1, THE LICENSEE DISCOVERED THAT A COMPONENT INSTALLED ON A | | PRINTED CIRCUIT BOARD IN THE CHARGER WAS NOT PROPERLY SOLDERED. A BOARD IN | | CHARGER 2-21 WAS FOUND TO HAVE A SIMILAR DEFECT, AS DID TWO BOARDS STORED | | IN THE WAREHOUSE. | | | | THE LICENSEE PLANS TO PERFORM A 100% INSPECTION OF PRINTED CIRCUIT BOARDS | | INSTALLED IN STATION BATTERY CHARGERS TO IDENTIFY ADDITIONAL BOARDS WITH | | SIMILAR DEFECTS. THE LICENSEE WAS UNABLE TO PROVIDE THE NAME OF THE | | MANUFACTURER. THE RI WILL BE INFORMED. | +------------------------------------------------------------------------------+