U.S. Nuclear Regulatory Commission Operations Center Event Reports For 09/25/95 - 09/26/95 ** EVENT NUMBERS ** 29224 29350 29369 29370 29371 29372 29373 !!!!!!!!! THIS EVENT HAS BEEN RETRACTED. THIS EVENT HAS BEEN RETRACTED !!!!!!! +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 29224 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: PRAIRIE ISLAND REGION: 3 |NOTIFICATION DATE: 08/21/95 | |UNIT: [ ] [2] [ ] STATE: MN |NOTIFICATION TIME: 15:15 [ET]| |RX TYPE: [1] W-2-LP,[2] W-2-LP |EVENT DATE: 08/21/95 | +------------------------------------------------+EVENT TIME: 09:08[CDT]| |NRC NOTIFIED BY: CARLSON |LAST UPDATE DATE: 09/25/95 | |HQ OPS OFFICER: CHAUNCEY GOULD +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |BRUCE JORGENSEN RDO | |AESF 50.72(b)(2)(ii) ESF ACTUATION | | | | | | | | | | | | | | +-----+----------+-------+--------+--------------+--+--------+-----------------+ |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 +------------------------------------------------------------------------------+ | THE PLANT HAD AN ESF ACTUATION WHEN THE UNIT 2 CONTAINMENT AIR SAMPLE | | ISOLATION VALVES CLOSED. | | | | THE CV-31642 AND CV-31644 UNIT 2 CONTAINMENT AIR SAMPLE ISOLATION VALVES | | WENT CLOSED FOR NO APPARENT REASON. THESE VALVES NORMALLY ISOLATE ON AN | | ESF ACTUATION SIGNAL. AT THIS TIME, THE LICENSEE DOES NOT KNOW WHAT CAUSED | | THE ISOLATION. THE LICENSEE IS STILL INVESTIGATING THE EVENT SINCE THERE | | WAS NOTHING ON GOING AT THE TIME WHICH COULD HAVE RESULTED IN THE | | ISOLATION. THE NRC RESIDENT INSPECTOR WAS INFORMED. | | | | * * * 12:17 SEPTEMBER 25, 1995, RETRACTION FROM ANDERSON BY TROCINE * * * | | | | THE LICENSEE RETRACTED THIS EVENT BASED ON DISCUSSIONS WITH THE NRC | | RESIDENT INSPECTOR AND AEOD PERSONNEL. THE LICENSEE NOTIFIED THE NRC | | RESIDENT INSPECTOR. THE NRC OPERATIONS CENTER NOTIFIED THE R3DO | | (PHILLIPS). | +------------------------------------------------------------------------------+ !!!!!!!!! THIS EVENT HAS BEEN RETRACTED. THIS EVENT HAS BEEN RETRACTED !!!!!!! +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 29350 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: OCONEE REGION: 2 |NOTIFICATION DATE: 09/19/95 | |UNIT: [1] [2] [3] STATE: SC |NOTIFICATION TIME: 21:19 [ET]| |RX TYPE: [1] B&W-L-LP,[2] B&W-L-LP,[3] B&W-L-LP |EVENT DATE: 09/19/95 | +------------------------------------------------+EVENT TIME: 17:37[EDT]| |NRC NOTIFIED BY: NIX |LAST UPDATE DATE: 09/25/95 | |HQ OPS OFFICER: DOUG WEAVER +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |CHARLES HOSEY RDO | |AINB 50.72(b)(2)(iii)(B) POT RHR INOP | | | | | | | | | | | | | | +-----+----------+-------+--------+--------------+--+--------+-----------------+ |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 100 POWER OPERATION | 100 POWER OPERATION | +-----+---------------------------------------------+--------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | THE PLANT MAY BE UNABLE TO MEET THE DESIGN TIME REQUIREMENT IN STARTING | | AUXILIARY SERVICE WATER IN A TORNADO EVENT | | | | "THE OCONEE TORNADO ANALYSIS CURRENTLY ASSUMES 40 MINUTES FOR OPERATOR | | ACTION TO INITIATE AUXILIARY SERVICE WATER FLOW TO REMOVE SECONDARY DECAY | | HEAT. BASED ON EXPERIENCE DRAWN FROM AN EMERGENCY DRILL (TORNADO EVENT), | | IT WAS CONCLUDED THAT A POTENTIAL PROBLEM WITH MEETING THE 40 MINUTES | | ASSUMED IN THE TORNADO ANALYSIS MAY EXIST. THIS EVENT IS BEING | | CONSERVATIVELY REPORTED. DUKE POWER WILL CONTINUE TO EVALUATE THE DESIGN | | BASIS REQUIREMENTS FOR THE AUXILIARY SERVICE WATER SYSTEM AND UPDATE THIS | | REPORT, AS NECESSARY, IN THE FUTURE." | | | | THE TIME REQUIRED TO COMPLETE OTHER COMPETING REQUIRED ACTIONS DELAYED | | IMPLEMENTING THE ABNORMAL OPERATING PROCEDURE WHICH STARTS THE AUXILIARY | | SERVICE WATER PUMP. THIS DELAY CAUSED THE 40-MINUTE TIME REQUIREMENT TO BE | | EXCEEDED. | | | | THE LICENSEE WILL INFORM THE NRC RESIDENT INSPECTOR. | | | | * * * 15:18 SEPTEMBER 25, 1995, RETRACTION FROM CLARKSON BY TROCINE * * * | | | | AFTER FURTHER REVIEW, THE LICENSEE DETERMINED THAT THE 40-MINUTE TIME | | PERIOD FOR THE INITIATION OF SERVICE WATER FLOW AND HIGH PRESSURE INJECTION | | FLOW FOLLOWING A TORNADO EVENT CAN BE ACCOMPLISHED, AND THE LICENSEE HAS | | RETRACTED THIS EVENT. THE LICENSEE NOTIFIED THE NRC RESIDENT INSPECTOR. | | THE NRC OPERATIONS CENTER NOTIFIED THE R2DO (HOSEY). | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 29369 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: FERMI REGION: 3 |NOTIFICATION DATE: 09/25/95 | |UNIT: [2] [ ] [ ] STATE: MI |NOTIFICATION TIME: 08:25 [ET]| |RX TYPE: [2] GE-4 |EVENT DATE: 09/25/95 | +------------------------------------------------+EVENT TIME: 07:30[EDT]| |NRC NOTIFIED BY: DALE HOSKINS |LAST UPDATE DATE: 09/25/95 | |HQ OPS OFFICER: JOSEPH SEBROSKY +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |ROGER LANKSBURY RDO | |DDDD 73.71 UNSPECIFIED PARAGRAPH | | | | | | | | | | | | | | +-----+----------+-------+--------+--------------+--+--------+-----------------+ |UNIT |SCRAM CODE|RX CRIT|INIT PWR| INIT RX MODE |CURR PWR| CURR RX MODE | +-----+----------+-------+--------+-----------------+--------+-----------------+ | 2 | N Y 96 POWER OPERATION | 96 POWER OPERATION | | | | | | | | | +-----+---------------------------------------------+--------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | SECURITY DEGRADATION DISCOVERED. IMMEDIATE COMPENSATORY ACTION TAKEN UPON | | DISCOVERY. SEE HOO LOG FOR DETAILS. | | | | THE LICENSEE WILL NOTIFY THE RESIDENT INSPECTOR. | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 29370 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: VOGTLE REGION: 2 |NOTIFICATION DATE: 09/25/95 | |UNIT: [1] [ ] [ ] STATE: GA |NOTIFICATION TIME: 16:49 [ET]| |RX TYPE: [1] W-4-LP,[2] W-4-LP |EVENT DATE: 09/24/95 | +------------------------------------------------+EVENT TIME: 17:58[EDT]| |NRC NOTIFIED BY: JOHN HOPKINS |LAST UPDATE DATE: 09/25/95 | |HQ OPS OFFICER: LEIGH TROCINE +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |CHARLES HOSEY RDO | |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 +------------------------------------------------------------------------------+ | THE LICENSEE MADE A 24-HOUR NOTIFICATION FOR VIOLATING LICENSE REQUIREMENTS | | BECAUSE REACTOR POWER EXCEEDED 102% FOR A FEW SECONDS. | | | | REACTOR POWER PEAKED AT 102.08% BASED ON INFORMATION OBTAINED FROM | | SECONDARY HEAT BALANCE. PRIOR TO THE POWER EXCURSION, THE 1A FEEDWATER | | PUMP AUTOMATIC CONTROLLER FAILED CAUSING RAPID FLUCTUATIONS IN FEEDWATER | | FLOW. THE LICENSEE TOOK MANUAL CONTROL OF THE PUMP, AND STEAM GENERATOR | | FEEDWATER FLOWS WERE RESTORED TO NORMAL. NORMAL STEADY STATE CONDITIONS | | WERE RESTORED WITHIN APPROXIMATELY 20 MINUTES. THE FEEDWATER PUMP | | CONTROLLER WAS REPAIRED AT APPROXIMATELY 23:00 AND WAS RETURNED TO NORMAL. | | | | THE FEEDWATER PUMP CONTROLLER FAILURE APPEARS TO HAVE BEEN THE RESULT OF A | | FAILED NTD CARD (A STANDARD WESTINGHOUSE TRACKER DRIVER MODULE). A REVIEW | | OF THE ACTUAL REACTOR CORE POWER IS IN PROGRESS. | | | | THE LICENSEE NOTIFIED THE NRC RESIDENT INSPECTOR. | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |TRANSPORTATION EVENT | |EVENT NUMBER: 29371 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |LICENSEE: DART TRUCKING COMPANY, INC. |NOTIFICATION DATE: 09/25/95 | | CITY: RICHLAND REGION: 4 |NOTIFICATION TIME: 17:45 [ET]| | COUNTY: FRANKLIN STATE: WA |EVENT DATE: 09/22/95 | |LICENSE#: AGREEMENT: Y |EVENT TIME: 16:30[PDT]| | DOCKET: |LAST UPDATE DATE: 09/25/95 | | +-----------------------------+ | |PERSON ORGANIZATION| | |BLAIR SPITZBERG/R4DO RDO | | |ROBERT PIERSON/NMSS EO | +------------------------------------------------+BAGWELL FEMA | |NRC NOTIFIED BY: FINKBEINER/NAT'L RESP CTR |MONTE PHILLIPS R3DO | |HQ OPS OFFICER: LEIGH TROCINE |CHARLES HOSEY R2DO | +------------------------------------------------+CHARLES WHITE DOE | |EMERGENCY CLASS: NOT APPLICABLE | | |10 CFR SECTION: | | |NINF INFORMATION ONLY | | |NTRA TRANSPORTATION EVENT | | |NMAT MATL IN UNCNTRL AREA | | | | | | | | +------------------------------------------------+-----------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | TRANSPORTATION EVENT | | | | THE NATIONAL RESPONSE CENTER INFORMED THE NRC OF A NOTIFICATION FROM DART | | TRUCKING COMPANY, INC. LOCATED IN CANFIELD, OHIO, REGARDING A BREACHED | | SHIPPING CONTAINER ON SEPTEMBER 22, 1995. ACCORDING TO A REPRESENTATIVE | | FROM THE TRUCKING COMPANY, THE MATERIAL WAS OWNED BY PHILLIPS PETROLEUM | | COMPANY LOCATED IN BARTLESVILLE, OKLAHOMA. IT WAS PICKED UP IN OAK RIDGE, | | TENNESSEE, AND WAS DELIVERED TO THE HANFORD RESERVATION NEAR RICHLAND, | | WASHINGTON. APPARENTLY, AS THE STRONG TIGHT CONTAINERS WERE BEING UNLOADED, | | IT WAS DISCOVERED THAT A METAL ROD INSIDE A CONTAINER HAD PUNCTURED A HOLE | | IN THE CONTAINER AND THAT A SMALL AMOUNT OF ABSORBENT MATERIAL CONTAINING | | RADIOACTIVE MATERIAL (TRITIUM) SPILLED ONTO THE TRUCK BED. THERE WERE NO | | PERSONNEL CONTAMINATIONS ASSOCIATED WITH THIS EVENT, AND THE TRUCK BED HAS | | BEEN DECONTAMINATED AND RELEASED. DOE DID NOT HAVE A RECORD OF THIS EVENT. | | | | CURRENT STATUS: THE AREA WAS SEALED OFF, AND A CONTRACTOR (U.S. ECOLOGY | | LOCATED IN RICHLAND, WASHINGTON) REMOVED THE MATERIAL AND DECONTAMINATED | | THE TRUCK BED. THE TRUCK WAS RELEASED TODAY. THERE WERE NO PERSONNEL | | CONTAMINATIONS OR INJURIES ASSOCIATED WITH THIS EVENT. | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 29372 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: DIABLO CANYON REGION: 4 |NOTIFICATION DATE: 09/25/95 | |UNIT: [1] [ ] [ ] STATE: CA |NOTIFICATION TIME: 20:13 [ET]| |RX TYPE: [1] W-4-LP,[2] W-4-LP |EVENT DATE: 09/25/95 | +------------------------------------------------+EVENT TIME: 14:07[PDT]| |NRC NOTIFIED BY: DAVID V. PIERCE |LAST UPDATE DATE: 09/25/95 | |HQ OPS OFFICER: LEIGH TROCINE +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |BLAIR SPITZBERG 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 AUTOMATIC START OF ONE RESIDUAL HEAT REMOVAL (RHR) PUMP DURING | | THE PERFORMANCE OF BREAKER CUBICLE DIMENSIONAL INSPECTIONS | | | | DURING THE PERFORMANCE OF VITAL 4160-VOLT BREAKER CUBICLE DIMENSIONAL | | INSPECTIONS, BREAKER 52-HG-08 CLOSED RESULTING IN THE INADVERTENT START OF | | RHR PUMP 1-1. NUMEROUS (12) BREAKERS WERE BEING INSPECTED DIMENSIONALLY AS | | PART OF THE LICENSEE'S 4160-VOLT BREAKER REPLACEMENT PROJECT. THE | | AUTOMATIC START OCCURRED DURING THE SEVENTH INSPECTION OF THE VARIOUS | | BREAKERS. THE REASON FOR THE BREAKER CLOSURE HAS NOT YET BEEN DETERMINED, | | BUT THE LICENSEE'S INVESTIGATION IS ONGOING. | | | | THE LICENSEE HAS NOTIFIED THE NRC RESIDENT INSPECTOR. | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 29373 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: ARKANSAS NUCLEAR REGION: 4 |NOTIFICATION DATE: 09/26/95 | |UNIT: [ ] [2] [ ] STATE: AR |NOTIFICATION TIME: 05:30 [ET]| |RX TYPE: [1] B&W-L-LP,[2] CE |EVENT DATE: 09/26/95 | +------------------------------------------------+EVENT TIME: 03:16[CDT]| |NRC NOTIFIED BY: BILL CUSACK |LAST UPDATE DATE: 09/26/95 | |HQ OPS OFFICER: JOSEPH SEBROSKY +-----------------------------+ +------------------------------------------------+ 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 | +-----+----------+-------+--------+-----------------+--------+-----------------+ | | | | | 2 | N N 0 COLD SHUTDOWN | 0 COLD SHUTDOWN | | | | | +-----+---------------------------------------------+--------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | CONTROL ROOM VENTILATION SWITCHED TO THE FILTERED SUPPLY DUE TO A VALID | | ELEVATED SUPPLY RADIATION READING. | | | | THE LICENSEE RECEIVED AN AUTOMATIC ISOLATION OF THE CONTROL ROOM | | VENTILATION SYSTEM DUE TO A SENSED HIGH RADIATION CONDITION IN THE INTAKE | | DUCT. THE LICENSEE HAS DETERMINED THAT THE ISOLATION SIGNAL WAS A VALID | | SIGNAL. | | | | THE CONTROL ROOM VENTILATION SYSTEM WAS IN THE RECIRCULATION MODE PRIOR TO | | THE EVENT WITH MAKEUP TO THE SYSTEM BEING SUPPLIED BY AN UNFILTERED SUPPLY. | | WHEN THE VENTILATION INTAKE DUCT RADIATION ALARM FOR THE CONTROL ROOM WAS | | RECEIVED IT SWITCHED THE MAKEUP SUPPLY TO A FILTERED PATH. THE ALARM FOR | | THE RADIATION MONITOR WAS SET AT 240 COUNTS PER MINUTE (CPM) PRIOR TO THE | | EVENT WITH BACKGROUND READINGS OF 70 TO 140 CPM. THE HIGHEST LEVEL REACHED | | WAS 450 CPM. THE CURRENT READING IS 130 CPM. | | | | THE LICENSEE IS CONTINUING TO INVESTIGATE THE PROBLEM. AT THIS TIME IT | | APPEARS THAT THE CAUSE OF THE PROBLEM WAS DUE TO THE PRESSURE IN | | CONTAINMENT BEING SLIGHTLY HIGHER THAN THE PRESSURE IN THE AUXILIARY | | BUILDING. BOTH THE CONTAINMENT AND AUXILIARY BUILDING'S PRESSURE REMAINED | | NEGATIVE RELATIVE TO ATMOSPHERIC PRESSURE SO THERE WAS NO UNMONITORED | | RELEASE OF RADIOACTIVITY TO THE ENVIRONMENT. | | | | PRIOR TO THE EVENT THE LICENSEE WAS IN THE PROCESS OF COLLAPSING THE | | PRESSURIZER BUBBLE, AND BOTH THE EQUIPMENT HATCH AND THE PERSONNEL HATCH | | FOR THE CONTAINMENT WERE OPEN. THE PRESSURIZER WAS LINED UP TO THE QUENCH | | TANK INSIDE THE CONTAINMENT DURING THIS EVOLUTION. THE LICENSEE SPECULATES | | THAT THE GASES LEAVING THE QUENCH TANK ENTERED THE AUXILIARY BUILDING | | BECAUSE OF THE SLIGHT PRESSURE DIFFERENCE BETWEEN IT AND THE CONTAINMENT | | BUILDING. THESE GASES THEN CAUSED THE ALARM IN THE INLET TO THE CONTROL | | ROOM. | | | | NO OTHER RADIATION ALARMS WERE RECEIVED, INCLUDING RADIATION ALARMS FOR THE | | CONTAINMENT OR THE AUXILIARY BUILDING. THE CONTROL ROOM VENTILATION SYSTEM | | REMAINS IN THE RECIRCULATION MODE WITH A FILTERED MAKEUP SUPPLY. | | | | THE LICENSEE HAS INFORMED THE RESIDENT INSPECTOR. | +------------------------------------------------------------------------------+