U.S. Nuclear Regulatory Commission Operations Center Event Reports For 11/09/1998 - 11/10/1998 ** EVENT NUMBERS ** 35011 35012 35013 35014 +------------------------------------------------------------------------------+ |Power Reactor |Event Number: 35011 | +------------------------------------------------------------------------------+ +------------------------------------------------------------------------------+ | FACILITY: PRAIRIE ISLAND REGION: 3 |NOTIFICATION DATE: 11/09/1998| | UNIT: [] [2] [] STATE: MN |NOTIFICATION TIME: 02:00[CST]| | RXTYPE: [1] W-2-LP,[2] W-2-LP |EVENT DATE: 11/09/1998| +------------------------------------------------+EVENT TIME: 00:00[CST]| | NRC NOTIFIED BY: DOUG SMITH |LAST UPDATE DATE: 11/09/1998| | HQ OPS OFFICER: DICK JOLLIFFE +-----------------------------+ +------------------------------------------------+PERSON ORGANIZATION | |EMERGENCY CLASS: N/A |RONALD GARDNER R3 | |10 CFR SECTION: | | |ARPS 50.72(b)(2)(ii) RPS ACTUATION | | | | | | | | | | | +-----+----------+-------+--------+-----------------+--------+-----------------+ |UNIT |SCRAM CODE|RX CRIT|INIT PWR| INIT RX MODE |CURR PWR| CURR RX MODE | +-----+----------+-------+--------+-----------------+--------+-----------------+ | | | |2 A/R Y 22 Power Operation |0 Hot Standby | | | | +------------------------------------------------------------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | AUTO REACTOR TRIP FROM 22% POWER DUE TO MAIN TURBINE TRIP WHILE SHUTTING | | DOWN | | | | DURING A PLANNED PLANT SHUTDOWN FOR REFUELING, THE UNIT 2 MAIN TURBINE | | TRIPPED FROM 22% POWER FOR UNKNOWN REASONS. THIS CAUSED THE REACTOR TO AUTO | | TRIP. ALL CONTROL ROD BOTTOM LIGHTS INDICATED THAT ALL CONTROL RODS HAD | | COMPLETELY INSERTED INTO THE CORE. HOWEVER, THE INDIVIDUAL ROD POSITION | | INDICATORS (IRPIs) INDICATED ONE CONTROL ROD AT 10 STEPS AND A SECOND | | CONTROL ROD AT 19 STEPS. THE STEAM GENERATORS ARE BEING FED BY THE MAIN | | FEEDWATER SYSTEM AND STEAM IS BEING DUMPED TO THE MAIN CONDENSER. NO SAFETY | | OR RELIEF VALVES LIFTED. UNIT 2 IS STABLE IN MODE 3 (HOT STANDBY). | | | | THE LICENSEE IS INVESTIGATING THE CAUSE OF THE MAIN TURBINE TRIP AND THE | | IRPI CONDITION AND WILL PROCEED WITH THE REFUELING OUTAGE. | | | | THE LICENSEE INFORMED THE NRC RESIDENT INSPECTOR. | +------------------------------------------------------------------------------+ +------------------------------------------------------------------------------+ |Power Reactor |Event Number: 35012 | +------------------------------------------------------------------------------+ +------------------------------------------------------------------------------+ | FACILITY: SEQUOYAH REGION: 2 |NOTIFICATION DATE: 11/09/1998| | UNIT: [1] [] [] STATE: TN |NOTIFICATION TIME: 14:00[EST]| | RXTYPE: [1] W-4-LP,[2] W-4-LP |EVENT DATE: 11/09/1998| +------------------------------------------------+EVENT TIME: 11:00[EST]| | NRC NOTIFIED BY: CHAPMAN |LAST UPDATE DATE: 11/09/1998| | HQ OPS OFFICER: CHAUNCEY GOULD +-----------------------------+ +------------------------------------------------+PERSON ORGANIZATION | |EMERGENCY CLASS: N/A |KERRY LANDIS R2 | |10 CFR SECTION: | | |ARPS 50.72(b)(2)(ii) RPS ACTUATION | | | | | | | | | | | +-----+----------+-------+--------+-----------------+--------+-----------------+ |UNIT |SCRAM CODE|RX CRIT|INIT PWR| INIT RX MODE |CURR PWR| CURR RX MODE | +-----+----------+-------+--------+-----------------+--------+-----------------+ |1 A/R Y 100 Power Operation |0 Hot Standby | | | | | | | +------------------------------------------------------------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | AUTO REACTOR TRIP FROM 100% POWER ON A 2 OUT OF 4 OP-DELTA-T SIGNAL. | | | | WHILE PERFORMING A SCHEDULED FUNCTIONAL TEST ON CHANNEL II NIS POWER RANGE, | | ONE OF TWO OP-DELTA-T BISTABLES WAS PLACED IN THE TRIPPED CONDITION. A | | FAILURE OF THE I-IV VITAL INVERTER RESULTED IN THE LOSS OF POWER TO ITS | | RESPECTIVE 120VAC INSTRUMENT POWER BOARD CAUSING A SECOND OP-DELTA-T | | BISTABLE TO TRIP. THIS SATISFIED THE REQUIRED 2 OUT OF 4 LOGIC GENERATING | | AN AUTOMATIC REACTOR TRIP. THE LICENSEE IS INVESTIGATING THE CAUSE OF THIS | | EVENT. ALL CONTROL RODS FULLY INSERTED FOLLOWING THE REACTOR TRIP AND NO | | ECCS ACTUATED OR PRIMARY RELIEF VALVES LIFTED. | | | | MINIMUM TEMPERATURE FOLLOWING THE REACTOR TRIP FOR RCS WAS 541°F. DUE TO | | THE LOSS OF LETDOWN CHARGING, THEY SWAPPED TO THE REACTOR WATER STORAGE TANK | | FOR APPROXIMATELY 1 HOUR. THEY ARE CONTROLLING RCS TEMPERATURE WITH THE | | STEAM GENERATOR RELIEF VALVES DUE TO MOISTURE IN THE STEAM DUMP HEADER. | | | | THE RESIDENT INSPECTOR WAS NOTIFIED. | +------------------------------------------------------------------------------+ +------------------------------------------------------------------------------+ |Power Reactor |Event Number: 35013 | +------------------------------------------------------------------------------+ +------------------------------------------------------------------------------+ | FACILITY: MILLSTONE REGION: 1 |NOTIFICATION DATE: 11/09/1998| | UNIT: [1] [] [] STATE: CT |NOTIFICATION TIME: 16:00[EST]| | RXTYPE: [1] GE-3,[2] CE,[3] W-4-LP |EVENT DATE: 11/09/1998| +------------------------------------------------+EVENT TIME: 16:00[EST]| | NRC NOTIFIED BY: LATZ |LAST UPDATE DATE: 11/09/1998| | HQ OPS OFFICER: CHAUNCEY GOULD +-----------------------------+ +------------------------------------------------+PERSON ORGANIZATION | |EMERGENCY CLASS: N/A |LAWRENCE DOERFLEIN R1 | |10 CFR SECTION: | | |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 | | | | | | | +------------------------------------------------------------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | THE LICENSEE NOTIFIED THE CONNECTICUT DEPARTMENT OF ENVIRONMENTAL PROTECTION | | OF OIL FOUND IN SOIL ON SITE. | | | | DURING A SITE ENVIRONMENTAL INVESTIGATION TO SUPPORT UNDERGROUND TANK FARM | | CLOSURE, THE LICENSEE REPORTED FINDING HISTORICAL OIL (FROM VARIOUS SOURCES | | OVER THE PAST 20 YEARS) IN THE SOIL ON SITE. THE AREA WITH THE APPARENT OIL | | CONTAMINATION IS APPROXIMATELY 20 FT X 30 FT AND UP TO 10 FT DEEP. THEY | | HAVE CONFIRMED THAT THE OIL IS NOT SPREADING. SOIL SAMPLES HAVE BEEN TAKEN | | FOR ANALYSIS. | | | | THE RESIDENT INSPECTOR WILL BE NOTIFIED. | +------------------------------------------------------------------------------+ +------------------------------------------------------------------------------+ |Other Nuclear Material |Event Number: 35014 | +------------------------------------------------------------------------------+ +------------------------------------------------------------------------------+ | LICENSEE: INTERNAT. RAD. & INSPECT. SERVICES |NOTIFICATION DATE: 11/09/1998| | CITY: SAPULPA REGION: 4 |NOTIFICATION TIME: 17:00[CST]| | COUNTY: STATE: OK |EVENT DATE: 11/07/1998| |LICENSE#: 35-30246-01 AGREEMENT: N |EVENT TIME: 05:00[CST]| | DOCKET: |LAST UPDATE DATE: 11/09/1998| | +-----------------------------+ | |PERSON ORGANIZATION | | |ELMO COLLINS R4 | | |MIKE BELL NMSS | +------------------------------------------------+ | | NRC NOTIFIED BY: WIELAND | | | HQ OPS OFFICER: CHAUNCEY GOULD | | +------------------------------------------------+ | |EMERGENCY CLASS: N/A | | |10 CFR SECTION: | | |BAD1 20.2202(a)(1) PERS OVEREXPOSURE | | | | | | | | | | | | | | +------------------------------------------------------------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | INTERNATIONAL RADIOGRAPHY & INSPECTION SERVICES OF TULSA, OK REPORTED AN | | OVEREXPOSURE OF ONE OF THEIR EMPLOYEES. | | | | AN EMPLOYEE WALKED PAST A CAMERA WHILE SETTING UP FOR A PIPE RADIOGRAPH. | | THE ATTENDANT TECHNICIANS THOUGHT ( BUT WERE NOT SURE) THE CAMERA WAS | | ALREADY SET UP FOR THE RADIOGRAPH. THE BADGES WERE SENT TO THERMONUTECH ON | | 11/07/98 FOR A READING. THE LICENSEE JUST RECEIVED THE RESULTS TODAY. | | THERE SEEMS TO BE AN ANOMALY WITH THE READINGS. THE LIGHTLY SHIELDED CHIP | | HAD A READING OF 3,400 MR, WHILE THE HEAVILY SHIELDED (WHOLE BODY BADGE) | | CHIP HAD A READING OF 10,780 MR. THERMONUTECH DOES NOT UNDERSTAND WHY THE | | WHOLE BODY BADGE IS READING HIGHER THAN THE LIGHTLY SHIELDED BADGE. | | HOWEVER, THE EMPLOYEE'S DOSIMETER AND TLD HAD BEEN LOST DURING THE SETUP FOR | | THE RADIOGRAPH. THE EMPLOYEE'S BLOOD TEST TAKEN ON 11/07/98 HAD NORMAL | | RESULTS. THIS EVENT WILL BE FURTHER INVESTIGATED. | +------------------------------------------------------------------------------+