U.S. Nuclear Regulatory Commission Operations Center Event Reports For 06/16/97 - 06/17/97 ** EVENT NUMBERS ** 32169 32490 32491 32492 32493 32494 !!!!!!!!! THIS EVENT HAS BEEN RETRACTED. THIS EVENT HAS BEEN RETRACTED !!!!!!! +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 32169 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: OCONEE REGION: 2 |NOTIFICATION DATE: 04/17/97 | |UNIT: [1] [2] [3] STATE: SC |NOTIFICATION TIME: 10:24 [ET]| |RX TYPE: [1] B&W-L-LP,[2] B&W-L-LP,[3] B&W-L-LP |EVENT DATE: 04/17/97 | +------------------------------------------------+EVENT TIME: 09:00[EDT]| |NRC NOTIFIED BY: DAVE NIX |LAST UPDATE DATE: 06/16/97 | |HQ OPS OFFICER: DICK JOLLIFFE +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |KENNETH BARR 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 | | 2 | N Y 100 POWER OPERATION | 100 POWER OPERATION | | 3 | N Y 100 POWER OPERATION | 100 POWER OPERATION | +-----+---------------------------------------------+--------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | THE SECOND TRAIN OF THE LOW TEMPERATURE OVERPRESSURE PROTECTION SYSTEM WAS | | FOUND TO BE INOPERABLE IN THE PAST. | | | | THE LOW TEMPERATURE OVERPRESSURE PROTECTION (LTOP) SYSTEM PROTECTS THE | | REACTOR VESSEL FROM EXCESSIVE PRESSURE AT LOW TEMPERATURE CONDITIONS. | | THE FIRST TRAIN OF THE LTOP SYSTEM CONSISTS OF THE PRESSURIZER POWER | | OPERATED RELIEF VALVE WITH A LOWERED LIFT SETPOINT BASED ON LOW TEMPERATURE | | PRESSURE LIMITS, ALONG WITH ITS FLOWPATH. THE SECOND TRAIN OF THE LTOP | | SYSTEM CONSISTS OF OPERATOR ACTION, ASSISTED BY ADMINISTRATIVE CONTROLS, | | ALARMS, AND AN OPERATING PHILOSOPHY THAT MAINTAINS A STEAM BUBBLE IN THE | | PRESSURIZER DURING ALL MODES OF OPERATION (EXCEPT FOR INSERVICE HYDROSTATIC | | TESTING). THE SECOND LTOP SYSTEM TRAIN RELIES ON OPERATOR ACTION (AFTER AN | | ASSUMED 10 MINUTE DELAY) TO MITIGATE A LOW TEMPERATURE OVERPRESSURE EVENT. | | | | AT 0900 ON 04/17/97, THE LICENSEE DETERMINED THAT, IN THE PAST, OPERATOR | | ACTION MAY NOT HAVE BEEN CAPABLE OF MITIGATING CERTAIN LTOP EVENTS SINCE | | LESS THAN A 10 MINUTE DELAY PERIOD WOULD HAVE BEEN AVAILABLE BEFORE THE | | OPERATOR WAS REQUIRED TO TAKE MITIGATIVE ACTIONS. THE SCENARIO EVALUATED | | WAS THE POSTULATED FAILURE OF THE HIGH PRESSURE INJECTION MAKEUP VALVE | | (HP-120) TO THE FULL OPEN POSITION AND THE FAILURE OF THE FIRST TRAIN OF | | THE LTOP SYSTEM. IN THIS SCENARIO, TO ENSURE THAT 10 MINUTES ARE AVAILABLE | | FOR OPERATOR ACTION TO MITIGATE AN LTOP EVENT, HIGH PRESSURE INJECTION | | MAKEUP FLOW TO THE REACTOR COOLANT SYSTEM IS RESTRICTED THROUGH VALVE | | HP-120 BY THE USE OF TRAVEL STOPS ON THIS VALVE. LICENSEE ENGINEERING | | ANALYSIS DETERMINED THAT THE TRAVEL STOPS ON VALVE HP-120 MAY NOT HAVE BEEN | | SET IN THE PAST TO ADEQUATELY RESTRICT MAKEUP FLOW THROUGH THIS VALVE AND | | PROVIDE 10 MINUTES FOR OPERATOR ACTIONS. | | | | THIS EVENT HAS NO EFFECT ON PRESENT PLANT OPERATIONS FOR UNITS 1, 2, AND 3. | | | | THE LICENSEE IS DETERMINING CORRECTIVE ACTIONS AND PLANS TO SUBMIT A | | LICENSEE EVENT REPORT OF THIS EVENT TO THE NRC WHICH WILL INCLUDE DETAILS | | OF THE ROOT CAUSE AND CORRECTIVE ACTIONS TAKEN. | | | | THE LICENSEE NOTIFIED THE NRC RESIDENT INSPECTOR. | | | | * * * UPDATE 1553 6/16/97 FROM BAILEY TAKEN BY STRANSKY * * * | | | | THE LICENSEE IS RETRACTING THIS NOTIFICATION. THE FOLLOWING IS TEXT FROM A | | FACSIMILE SUBMITTED BY THE LICENSEE: | | | | "THE ANALYSIS PERFORMED IN APRIL 1997 USED AN LTOP PRESSURE LIMIT OF 650 | | PSIG AS THE BOUNDING RCS PRESSURE. FURTHER REVIEW OF ENGINEERING | | CALCULATIONS HAS DETERMINED THAT THE MOST LIMITING LTOP PRESSURE LIMIT IS | | 682 PSIG. UTILIZATION OF THE 682 PSIG LTOP PRESSURE LIMIT INDICATES THAT | | THE TRAVEL STOPS ON VALVE HP-120 WOULD HAVE ADEQUATELY RESTRICTED MAKEUP | | FLOW THROUGH THE VALVE. THUS, THE SECOND TRAIN OF THE LTOP SYSTEM WOULD | | HAVE BEEN OPERABLE TO MITIGATE LTOP EVENTS." | | | | THE LICENSEE HAS INFORMED THE NRC RESIDENT INSPECTOR. NOTIFIED R2DO | | (JULIAN). | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 32490 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: INDIAN POINT REGION: 1 |NOTIFICATION DATE: 06/16/97 | |UNIT: [ ] [3] [ ] STATE: NY |NOTIFICATION TIME: 11:04 [ET]| |RX TYPE: [2] W-4-LP,[3] W-4-LP |EVENT DATE: 06/16/97 | +------------------------------------------------+EVENT TIME: 10:45[EDT]| |NRC NOTIFIED BY: MESSINA/O'DONNELL |LAST UPDATE DATE: 06/16/97 | |HQ OPS OFFICER: JOHN MacKINNON +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: UNUSUAL EVENT +-----------------------------+ |10 CFR SECTION: |RON BELLAMY RDO | |AAEC 50.72(a)(1)(i) EMERGENCY DECLARED |BOB DENNIG EO | | |STINEDURF FEMA | | |Dr BARRETT (MGR) IRD | | | | | | | +-----+----------+-------+--------+--------------+--+--------+-----------------+ |UNIT |SCRAM CODE|RX CRIT|INIT PWR| INIT RX MODE |CURR PWR| CURR RX MODE | +-----+----------+-------+--------+-----------------+--------+-----------------+ | | | | | 3 | N N 0 REFUELING | 0 REFUELING | | | | | +-----+---------------------------------------------+--------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | LOSS OF OFFSITE POWER FOR 44 MINUTES. | | | | INDIAN POINT UNIT 3 HAS BEEN SHUTDOWN FOR A REFUELING OUTAGE SINCE | | 05/14/97. PLANT CONDITIONS: 1) OFFSITE POWER BEING SUPPLIED TO THE PLANT | | LOADS FROM THEIR STATION AUXILIARY TRANSFORMER, 2) EMERGENCY DIESEL | | GENERATOR 31 WAS OUT OF SERVICE FOR MAINTENANCE (SUPPLIES POWER TO VITAL | | BUSES 2A & 3A), 3) THE REACTOR CORE WAS BEING COOLED BY RHR COOLING AND THE | | SPENT FUEL POOL BY THE SPENT FUEL POOL COOLING PUMP, AND 4) 119 FUEL | | ASSEMBLIES HAD BEEN OFFLOADED FROM THE REACTOR CORE TO THE SPENT FUEL POOL | | AND 74 FUEL ASSEMBLIES WERE STILL IN THE REACTOR CORE. | | | | ACCORDING TO THE LICENSEE, INDIAN POINT UNIT 2 (CONSOLIDATED EDISON CO) WAS | | SWITCHING ELECTRICAL LOADS IN THE SWITCHYARD WHEN INDIAN POINT UNIT 2 | | PERSONNEL APPARENTLY APPLIED A LARGE GROUND BY MISTAKE WHICH CAUSED A LOSS | | OF OFFSITE POWER TO INDIAN POINT UNIT 3 STATION AUXILIARY TRANSFORMER. | | | | ON THE A LOSS OF OFFSITE POWER EMERGENCY DIESEL 32 AUTOMATICALLY STARTED | | BUT DID NOT LOAD TO ITS 480 VAC VITAL BUS "6A" BECAUSE IT BLEW A CONTROL | | POWER FUSE. EMERGENCY DIESEL GENERATOR 33 STARTED AND LOADED ONTO ITS 480 | | VAC VITAL BUS (5A). VITAL BUS "5A" SUPPLIES POWER TO ONE COMPONENT COOLING | | WATER PUMP AND ONE SERVICE WATER PUMP. THE SPENT FUEL COOLING WATER PUMP | | WAS PLACED BACK IN SERVICE AT 1058 EDT AFTER ITS MOTOR CONTROL CENTER WAS | | RESET AND POWER WAS SUPPLIED TO IT FROM VITAL BUS "5A". SPENT FUEL POOL | | TEMPERATURE INCREASED FROM 95 TO 96 DEGREES F DURING THE LOSS OF SPENT FUEL | | POOL COOLING PUMP. THE RESIDUAL HEAT REMOVAL PUMP WAS RESTORED TO SERVICE | | SHORTLY AFTER 1104 ET. THERE WAS NO NOTICEABLE INCREASE IN THE REACTOR | | COOLANT SYSTEM TEMPERATURE DURING THIS EVENT. | | | | THE NRC RESIDENT INSPECTOR WAS IN CONTROL ROOM DURING DURING THE LOSS OF | | OFFSITE POWER. | | | | * * * UPDATE 1224 6/16/97 FROM MESSINA TAKEN BY STRANSKY * * * | | | | THE UNUSUAL EVENT WAS TERMINATED AT 1211. THE NRC RESIDENT INSPECTOR HAS | | BEEN INFORMED. NOTIFIED R1DO (BELLAMY), EO (DENNIG), FEMA (STINEDURF). | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 32491 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: BIG ROCK POINT REGION: 3 |NOTIFICATION DATE: 06/16/97 | |UNIT: [1] [ ] [ ] STATE: MI |NOTIFICATION TIME: 16:50 [ET]| |RX TYPE: [1] GE-1 |EVENT DATE: 06/16/97 | +------------------------------------------------+EVENT TIME: 15:30[EDT]| |NRC NOTIFIED BY: G. WITHROW |LAST UPDATE DATE: 06/16/97 | |HQ OPS OFFICER: BOB STRANSKY +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |CREED RDO | |HFIT 26.73 FITNESS FOR DUTY | | | | | | | | | | | | | | +-----+----------+-------+--------+--------------+--+--------+-----------------+ |UNIT |SCRAM CODE|RX CRIT|INIT PWR| INIT RX MODE |CURR PWR| CURR RX MODE | +-----+----------+-------+--------+-----------------+--------+-----------------+ | 1 | N Y 83 POWER OPERATION | 83 POWER OPERATION | | | | | | | | | +-----+---------------------------------------------+--------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | FITNESS FOR DUTY REPORT | | | | A LICENSED OPERATOR TESTED POSITIVE FOR ILLEGAL DRUG USE DURING A FOR-CAUSE | | TEST. THE TEST WAS PERFORMED DUE TO AN ANONYMOUS ALLEGATION MADE TO THE | | CHARLEVOIX POLICE DEPARTMENT. THE EMPLOYEE'S SITE ACCESS HAS BEEN | | TERMINATED. THE NRC RESIDENT INSPECTOR HAS BEEN INFORMED. REFER TO THE HOO | | LOG FOR ADDITIONAL DETAILS. | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 32492 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: CALVERT CLIFFS REGION: 1 |NOTIFICATION DATE: 06/16/97 | |UNIT: [1] [2] [ ] STATE: MD |NOTIFICATION TIME: 17:11 [ET]| |RX TYPE: [1] CE,[2] CE |EVENT DATE: 06/13/97 | +------------------------------------------------+EVENT TIME: 14:30[EDT]| |NRC NOTIFIED BY: GROOMS |LAST UPDATE DATE: 06/16/97 | |HQ OPS OFFICER: BOB STRANSKY +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |BELLAMY RDO | |NINF INFORMATION ONLY | | | | | | | | | | | | | | +-----+----------+-------+--------+--------------+--+--------+-----------------+ |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 +------------------------------------------------------------------------------+ | COURTESY NOTIFICATION REGARDING REPORT MADE TO STATE | | | | ON 6/13/97, THE LICENSEE NOTIFIED THE MARYLAND STATE DEPARTMENT OF NATURAL | | RESOURCES REGARDING THE DISCOVERY OF A DEAD SEA TURTLE ON THE INTAKE | | STRUCTURE TRASH RACKS. THE NRC RESIDENT INSPECTOR HAS BEEN INFORMED. | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 32493 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: DUANE ARNOLD REGION: 3 |NOTIFICATION DATE: 06/16/97 | |UNIT: [1] [ ] [ ] STATE: IA |NOTIFICATION TIME: 17:45 [ET]| |RX TYPE: [1] GE-4 |EVENT DATE: 06/16/97 | +------------------------------------------------+EVENT TIME: 15:45[CDT]| |NRC NOTIFIED BY: JOENS |LAST UPDATE DATE: 06/16/97 | |HQ OPS OFFICER: BOB STRANSKY +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |CREED RDO | |DDDD 73.71 UNSPECIFIED PARAGRAPH | | | | | | | | | | | | | | +-----+----------+-------+--------+--------------+--+--------+-----------------+ |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 +------------------------------------------------------------------------------+ | SECURITY EVENT | | | | A GUARD POSTED AS A COMPENSATORY MEASURE WAS DISCOVERED TO BE SLEEPING. | | IMMEDIATE COMPENSATORY MEASURES WERE TAKEN UPON DISCOVERY. THE LICENSEE | | WILL INFORM THE NRC RESIDENT INSPECTOR. REFER TO THE HOO LOG FOR ADDITIONAL | | DETAILS. | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 32494 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: WATERFORD REGION: 4 |NOTIFICATION DATE: 06/16/97 | |UNIT: [3] [ ] [ ] STATE: LA |NOTIFICATION TIME: 18:04 [ET]| |RX TYPE: [3] CE |EVENT DATE: 06/14/97 | +------------------------------------------------+EVENT TIME: 00:00[CDT]| |NRC NOTIFIED BY: SCOTT |LAST UPDATE DATE: 06/16/97 | |HQ OPS OFFICER: BOB STRANSKY +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |POWERS RDO | |DDDD 73.71 UNSPECIFIED PARAGRAPH | | | | | | | | | | | | | | +-----+----------+-------+--------+--------------+--+--------+-----------------+ |UNIT |SCRAM CODE|RX CRIT|INIT PWR| INIT RX MODE |CURR PWR| CURR RX MODE | +-----+----------+-------+--------+-----------------+--------+-----------------+ | 3 | N N 0 COLD SHUTDOWN | 0 COLD SHUTDOWN | | | | | | | | | +-----+---------------------------------------------+--------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | SECURITY EVENT REGARDING SAFEGUARDS SYSTEM DEGRADATION RELATED TO AREA | | DOORS. IMMEDIATE COMPENSATORY ACTIONS TAKEN UPON DISCOVERY. THE NRC | | RESIDENT INSPECTOR HAS BEEN INFORMED. REFER TO HOO LOG FOR ADDITIONAL | | DETAILS. | +------------------------------------------------------------------------------+