U.S. Nuclear Regulatory Commission Operations Center Event Reports For 02/06/97 - 02/07/97 ** EVENT NUMBERS ** 31739 31740 31741 31742 31743 31744 31745 31746 +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 31739 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: LIMERICK REGION: 1 |NOTIFICATION DATE: 02/06/97 | |UNIT: [ ] [2] [ ] STATE: PA |NOTIFICATION TIME: 13:39 [ET]| |RX TYPE: [1] GE-4,[2] GE-4 |EVENT DATE: 02/06/97 | +------------------------------------------------+EVENT TIME: 11:00[EST]| |NRC NOTIFIED BY: DAVE NEFF |LAST UPDATE DATE: 02/06/97 | |HQ OPS OFFICER: DICK JOLLIFFE +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |MICHAEL MODES 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 REFUELING | 0 REFUELING | | | | | +-----+---------------------------------------------+--------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | - DISCOVERY OF SIX STUCK STEAM FLOODING HVAC DAMPERS - | | | | ON 02/06/97, THE LICENSEE IDENTIFIED THAT UNIT 2 MAY HAVE OPERATED IN | | AN UNANALYZED CONDITION THAT COULD HAVE ADVERSELY IMPACTED PLANT SAFETY. | | WHILE PERFORMING PREVENTIVE MAINTENANCE ACTIVITIES DURING THE ONGOING | | UNIT 2 REFUELING OUTAGE, THE LICENSEE IDENTIFIED SIX STEAM FLOODING HVAC | | DAMPERS THAT WOULD NOT FUNCTION. EXCESSIVE FRICTION IN EITHER THE SOLENOID | | OR ASSOCIATED BUSHING APPEARS TO BE THE CAUSE OF THE FAILURES. | | | | THESE SPECIFIC DAMPERS ARE LOCATED IN THREE VENTILATION DUCT WORK | | PENETRATIONS IN THE WALLS SURROUNDING THE OUTBOARD MAIN STEAM ISOLATION | | VALVE (MSIV) ROOM. EACH WALL PENETRATION HAS TWO STEAM FLOODING HVAC | | DAMPERS ARRANGED IN SERIES. THE DAMPERS ARE REQUIRED TO CLOSE FOLLOWING A | | HIGH ENERGY STEAM LINE BREAK (HELB) IN THE OUTBOARD MSIV ROOM TO PROTECT | | SAFETY-RELATED EQUIPMENT IN THE ADJOINING ROOM. TWO OF THE HVAC WALL | | PENETRATIONS COMMUNICATE WITH THE ADJOINING ROOM ON ELEVATION 253 OF THE | | REACTOR ENCLOSURE, AND THE OTHER HVAC WALL PENETRATION IS CONNECTED TO DUCT | | WORK LOCATED IN THE NEXT HIGHER FLOOR ON ELEVATION 283. | | | | THE LICENSEE HAS NO ANALYSIS FOR AN HELB IN THE OUTBOARD MSIV ROOM | | COINCIDENT WITH THE STEAM TRAVELING TO THE ADJACENT ROOMS ON ELEVATIONS 253 | | OR 283. SAFETY-RELATED EQUIPMENT LOCATED IN THE ADJOINING ROOM ON | | ELEVATION 253 INCLUDES THE SCRAM SOLENOIDS AND HYDRAULIC CONTROL UNITS, | | REDUNDANT REACTIVITY CONTROL SYSTEM SOLENOIDS, AND SEVERAL EMERGENCY CORE | | COOLING SYSTEM MOTOR-OPERATED VALVE ELECTRICAL BREAKERS. IF AN HELB HAD | | OCCURRED IN THE OUTBOARD MSIV ROOM AND IF THE DAMPERS HAD FAILED TO CLOSE, | | THE ABILITY TO SHUT THE PLANT DOWN MAY HAVE BEEN ADVERSELY IMPACTED. | | | | THE LICENSEE HAS NOT PERFORMED A CALCULATION TO DETERMINE THE ACTUAL | | TEMPERATURE, PRESSURE, AND HUMIDITY CONDITIONS THAT COULD RESULT FROM THIS | | SCENARIO. BASED ON ENGINEERING JUDGMENT, THE LICENSEE HAS CONCLUDED THAT | | THIS UNANALYZED CONDITION MAY ADVERSELY IMPACT PLANT SAFETY. | | | | CURRENTLY, THE UNIT 2 HVAC STEAM FLOODING DAMPERS ARE NOT REQUIRED TO BE | | FUNCTIONAL WHILE UNIT 2 IS SHUTDOWN. THE LICENSEE IS REVIEWING THE OTHER | | UNIT 2 HVAC STEAM FLOODING DAMPERS AND THE UNIT 1 HVAC STEAM FLOODING | | DAMPERS. (UNIT 1 IS PRESENTLY OPERATING AT 100% POWER.) | | | | THE LICENSEE WILL INFORM THE NRC RESIDENT INSPECTOR. | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 31740 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: NINE MILE POINT REGION: 1 |NOTIFICATION DATE: 02/06/97 | |UNIT: [1] [ ] [ ] STATE: NY |NOTIFICATION TIME: 15:55 [ET]| |RX TYPE: [1] GE-2,[2] GE-5 |EVENT DATE: 02/06/97 | +------------------------------------------------+EVENT TIME: 15:35[EST]| |NRC NOTIFIED BY: JOHN WEBERS |LAST UPDATE DATE: 02/06/97 | |HQ OPS OFFICER: RUDY KARSCH +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |MICHAEL MODES 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 +------------------------------------------------------------------------------+ | PIPING SUPPORTS FOR THE REACTOR BUILDING CLOSED COOLING WATER SYSTEM INSIDE | | PRIMARY CONTAINMENT DO NOT MEET THE FINAL SAFETY ANALYSIS REPORT SEISMIC | | REQUIREMENTS. A DESIGN BASIS SEISMIC LOAD WOULD EXCEED THE PIPE SUPPORTS' | | ALLOWABLE STRESS LOADING. THE SUPPORTS DO CONFORM TO ASME CODE | | REQUIREMENTS, SO THE LICENSEE PLANS TO KEEP THE UNIT AT POWER. CORRECTIVE | | ACTION WILL BE DETERMINED. | | | | THE LICENSEE WILL INFORM THE NRC RESIDENT INSPECTOR. | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |OTHER NUCLEAR MATERIAL | |EVENT NUMBER: 31741 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |LICENSEE: U.S. AIR FORCE |NOTIFICATION DATE: 02/06/97 | | CITY: TUCSON REGION: 4 |NOTIFICATION TIME: 17:21 [ET]| | COUNTY: STATE: AZ |EVENT DATE: 01/01/96 | |LICENSE#: 42-23539-01AF AGREEMENT: Y |EVENT TIME: 00:00[MST]| | DOCKET: |LAST UPDATE DATE: 02/06/97 | | +-----------------------------+ | |PERSON ORGANIZATION| | |THOMAS KOZAK, REG. 3 RDO | | | | +------------------------------------------------+PHIL HARRELL, REG. 4 RDO | |NRC NOTIFIED BY: PAUL FEESER | | |HQ OPS OFFICER: RUDY KARSCH | | +------------------------------------------------+ | |EMERGENCY CLASS: NOT APPLICABLE | | |10 CFR SECTION: | | |BAB2 20.2201(a)(1)(ii) LOST/STOLEN LNM>10X | | | | | | | | | | | | | | +------------------------------------------------+-----------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | DAVIS-MONTHAN AIR FORCE BASE, TUCSON, ARIZONA | | | | AN INVENTORY OF TRITIUM EXIT SIGNS DETERMINED THAT ONE SIGN WAS MISSING. | | THE SIGN WAS PROBABLY LOST DURING BUILDING RENOVATION CONDUCTED IN JANUARY | | OF 1996. THE SIGN CONTAINED 20 CURIES OF TRITIUM. | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |OTHER NUCLEAR MATERIAL | |EVENT NUMBER: 31742 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |LICENSEE: U.S. AIR FORCE |NOTIFICATION DATE: 02/06/97 | | CITY: SACRAMENTO REGION: 4 |NOTIFICATION TIME: 17:21 [ET]| | COUNTY: STATE: CA |EVENT DATE: 02/06/97 | |LICENSE#: 42-23539-01AF AGREEMENT: Y |EVENT TIME: 14:20[PST]| | DOCKET: |LAST UPDATE DATE: 02/06/97 | | +-----------------------------+ | |PERSON ORGANIZATION| | |THOMAS KOZAK, REG. 3 RDO | | | | +------------------------------------------------+PHIL HARRELL, REG. 4 RDO | |NRC NOTIFIED BY: PAUL FEESER | | |HQ OPS OFFICER: RUDY KARSCH | | +------------------------------------------------+ | |EMERGENCY CLASS: NOT APPLICABLE | | |10 CFR SECTION: | | |NMAT MATL IN UNCNTRL AREA | | | | | | | | | | | | | | +------------------------------------------------+-----------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | McCLELLAN AIR FORCE BASE, SACRAMENTO, CALIFORNIA | | | | AN INDIVIDUAL FOUND A SMALL BOX IN AN UNUSED BUILDING ON THE BASE. UPON | | EXAMINATION OF THE CONTENTS OF THE BOX, THE INDIVIDUAL DISCOVERED THREE | | STRONTIUM-90 SOURCES ENCASED IN EPOXY. THE EPOXY WAS CRUMBLY AND FELL | | APART DURING HANDLING. SUBSEQUENTLY, THE INDIVIDUAL ATE A DOUGHNUT AND | | LATER DETERMINED THAT THE MATERIAL HE HAD BEEN HANDLING WAS RADIOACTIVE. | | | | THE LICENSEE HAS DETERMINED THAT THE APPROXIMATE CURIE CONTENT OF THE THREE | | SOURCES WAS ONE MILLICURIE. BIO-ASSAYS WILL BE CONDUCTED FOR THE EXPOSED | | INDIVIDUAL SINCE INGESTION MAY HAVE OCCURRED. THE INDIVIDUAL WAS NOT | | WEARING ANY DOSIMETRY. | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 31743 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: FERMI REGION: 3 |NOTIFICATION DATE: 02/06/97 | |UNIT: [2] [ ] [ ] STATE: MI |NOTIFICATION TIME: 17:25 [ET]| |RX TYPE: [2] GE-4 |EVENT DATE: 02/06/97 | +------------------------------------------------+EVENT TIME: 11:00[EST]| |NRC NOTIFIED BY: JEFF GROFF |LAST UPDATE DATE: 02/06/97 | |HQ OPS OFFICER: RUDY KARSCH +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |THOMAS KOZAK RDO | |NLTR LICENSEE 24 HR REPORT | | | | | | | | | | | | | | +-----+----------+-------+--------+--------------+--+--------+-----------------+ |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 DISCOVERED AN ERROR IN THE COMPUTER PROGRAM USED TO CALCULATE | | REACTOR THERMAL POWER. THIS ERROR COULD HAVE LED THE LICENSEE TO EXCEED | | 100% POWER ON SEVERAL OCCASIONS. | | | | THE DENSITY COMPENSATION ALGORITHM IN THE PROCESS COMPUTER FOR CONVERSION | | OF DIFFERENTIAL PRESSURE DATA INTO MASS FLOW RATES IS INCORRECT. THE | | ALGORITHM TERM FOR THE RATIO OF THE SPECIFIC VOLUME AT THE REFERENCE | | TEMPERATURE AND PRESSURE WITH THE SPECIFIC VOLUME AT THE PROCESS | | TEMPERATURE AND PRESSURE SHOULD HAVE BEEN A SQUARE ROOT TERM. THIS ERROR | | INTRODUCES A NON-CONSERVATIVE BIAS INTO THE HEAT BALANCE CALCULATION. THE | | AFFECTED PARAMETERS ARE REACTOR WATER CLEANUP SYSTEM MASS FLOW AND CONTROL | | ROD DRIVE MASS FLOW. THE RESULTING ERROR IS APPROXIMATELY 0.5 MWth. | | | | THE LICENSEE HAS IDENTIFIED ONE OR MORE OCCASIONS IN CYCLES ONE, TWO, AND | | THREE WHEN THE CORE THERMAL POWER LIMIT MAY HAVE BEEN EXCEEDED. THE | | CURRENT LICENSED POWER LIMIT OF 3,430 MWth HAS NOT BEEN EXCEEDED AS A | | RESULT OF THIS ERROR. THE LICENSEE PLANS TO CORRECT THE CALCULATIONAL | | ALGORITHM. | | | | THE LICENSEE INFORMED THE NRC RESIDENT INSPECTOR. | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 31744 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: VERMONT YANKEE REGION: 1 |NOTIFICATION DATE: 02/06/97 | |UNIT: [1] [ ] [ ] STATE: VT |NOTIFICATION TIME: 18:02 [ET]| |RX TYPE: [1] GE-4 |EVENT DATE: 02/06/97 | +------------------------------------------------+EVENT TIME: 17:15[EST]| |NRC NOTIFIED BY: JIM BROOKS |LAST UPDATE DATE: 02/06/97 | |HQ OPS OFFICER: RUDY KARSCH +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |MICHAEL MODES 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 Y 100 POWER OPERATION | 100 POWER OPERATION | | | | | | | | | +-----+---------------------------------------------+--------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | A SHORT CIRCUIT OF CONTACTS COULD LEAD TO FAILURE OF VALVES TO CLOSE | | RESULTING IN A RELEASE PATHWAY. | | | | THE LICENSEE DETERMINED THAT A SHORT CIRCUIT ACROSS CONTACTS 5/6 IN RELAYS | | K42 OR K43 WILL PREVENT AUTOMATIC ISOLATION OF CONTAINMENT ATMOSPHERIC | | CONTROL SYSTEM VALVES SB-16-19-6A OR 6B, SB-16-19-7A AND 7B, AND SB-16-19-8 | | AND 10. THIS FAILURE MODE IS NOT SELF REVEALING. IF THE VALVES ARE OPEN | | AND A LOSS OF COOLANT ACCIDENT OCCURS, THERE WILL BE A VENT PATH BETWEEN | | THE SUPPRESSION CHAMBER AND THE DRYWELL THAT PARTIALLY BYPASSES THE VAPOR | | SUPPRESSION FUNCTION OF THE SUPPRESSION POOL. THE SINGLE FAILURE OF THE | | ABOVE RELAY CONTACTS PREVENTS AUTOMATIC CLOSURE OF THESE VALVES SHOULD A | | CONTAINMENT ISOLATION DEMAND OCCUR. REMOTE MANUAL OPERATION OF THE VALVES | | FROM THE CONTROL ROOM IS STILL POSSIBLE. THE LICENSEE DETERMINED THAT | | THERE IS NO CREDIBLE FAILURE THAT COULD CAUSE THE VALVES TO OPEN IF THEY | | WERE CLOSED. | | | | THE LICENSEE INFORMED THE NRC RESIDENT INSPECTOR. | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 31745 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: MILLSTONE REGION: 1 |NOTIFICATION DATE: 02/06/97 | |UNIT: [1] [ ] [ ] STATE: CT |NOTIFICATION TIME: 19:39 [ET]| |RX TYPE: [1] GE-3,[2] CE,[3] W-4-LP |EVENT DATE: 02/06/97 | +------------------------------------------------+EVENT TIME: 19:30[EST]| |NRC NOTIFIED BY: PAUL BENYEDA |LAST UPDATE DATE: 02/06/97 | |HQ OPS OFFICER: RUDY KARSCH +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |MICHAEL MODES 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 N 0 REFUELING | 0 REFUELING | | | | | | | | | +-----+---------------------------------------------+--------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | THE LICENSEE FOUND THAT THE VENTILATION EXHAUST FAN FOR THE SOLID | | RADIOACTIVE WASTE BUILDING DISCHARGES DIRECTLY TO THE ENVIRONMENT AND DOES | | NOT HAVE A RADIOACTIVE MONITORING INSTRUMENT. EFFLUENT MONITORING IS | | REQUIRED BY 10 CFR PART 20 AND BY 10 CFR PART 50, GENERAL DESIGN CRITERION | | 64. THE LICENSEE IS INVESTIGATING CORRECTIVE ACTION. | | | | THE LICENSEE INFORMED THE NRC RESIDENT INSPECTOR. | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 31746 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: WATTS BAR REGION: 2 |NOTIFICATION DATE: 02/07/97 | |UNIT: [1] [ ] [ ] STATE: TN |NOTIFICATION TIME: 04:36 [ET]| |RX TYPE: [1] W-4-LP,[2] W-4-LP |EVENT DATE: 02/07/97 | +------------------------------------------------+EVENT TIME: 01:20[EST]| |NRC NOTIFIED BY: PAT McGINNIS |LAST UPDATE DATE: 02/07/97 | |HQ OPS OFFICER: LEIGH TROCINE +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |CAUDLE JULIAN 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 +------------------------------------------------------------------------------+ | INADVERTENT START OF A MOTOR-DRIVEN AUXILIARY FEEDWATER PUMP DURING TESTING | | | | DURING PERFORMANCE OF AN ENGINEERED SAFEGUARD ACTUATION TEST ON THE 'A' | | MOTOR-DRIVEN AUXILIARY FEEDWATER PUMP, THE PUMP WAS INADVERTENTLY STARTED. | | THIS ACTUATION OCCURRED WHEN THE PERSONNEL INVOLVED IN THE TEST WERE | | ENSURING THAT THE RELAY TO BE ACTUATED WAS CORRECTLY IDENTIFIED AS TO ITS | | LOCATION AND STATE. AFTER LOCATING THE CORRECT RELAY, THE RELAY WAS | | INADVERTENTLY TOUCHED ON THE MANUAL ACTUATION BAR. THIS CAUSED THE RELAY | | TO PICKUP AND START THE 'A' AUXILIARY FEEDWATER PUMP. THE PUMP WAS | | SECURED, AND THE TEST WAS SUBSEQUENTLY PERFORMED SATISFACTORILY. | | | | ACCORDING TO THE GUIDANCE OF NUREG 1022, THIS ACTUATION WAS INVALID BECAUSE | | IT WAS NOT INITIATED IN RESPONSE TO ACTUAL PLANT CONDITIONS AND BECAUSE | | THERE WAS NOT A NEED FOR THE SAFETY FUNCTION. HOWEVER, IN ACCORDANCE WITH | | NUREG 1022, VOLUNTARY REPORTING IS REQUIRED BECAUSE THE SYSTEM (PRESSURIZED | | WATER REACTOR AUXILIARY FEEDWATER) IS LISTED IN TABLE 2. | | | | THE LICENSEE NOTIFIED THE NRC RESIDENT INSPECTOR. | +------------------------------------------------------------------------------+