U.S. Nuclear Regulatory Commission Operations Center Event Reports For 05/23/95 - 05/24/95 ** EVENT NUMBERS ** 28843 28844 28845 28846 28847 +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 28843 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: INDIAN POINT REGION: 1 |NOTIFICATION DATE: 05/23/95 | |UNIT: [2] [ ] [ ] STATE: NY |NOTIFICATION TIME: 11:14 [ET]| |RX TYPE: [2] W-4-LP,[3] W-4-LP |EVENT DATE: 05/23/95 | +------------------------------------------------+EVENT TIME: 09:07[EDT]| |NRC NOTIFIED BY: PHIL SANTINI |LAST UPDATE DATE: 05/23/95 | |HQ OPS OFFICER: JOSEPH SEBROSKY +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |LARRY NICHOLSON 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 0 STARTUP | 0 STARTUP | | | | | | | | | +-----+---------------------------------------------+--------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | THE UNIT HAD AN UNEXPECTED AUTO START OF THE '23' COMPONENT COOLING WATER | | (CCW) PUMP DURING TESTING. | | | | OPERATORS WERE PERFORMING QUARTERLY TESTING (PROCEDURE PTQ30B) ON THE '22' | | CCW PUMP. WHEN THEY STARTED THE '22' CCW PUMP, THE '23' CCW PUMP ALSO | | STARTED. THE LICENSEE IS INVESTIGATING THE CAUSE OF THE '23' CCW PUMP AUTO | | START, BUT BELIEVES THAT THE '23' CCW PUMP AUTO STARTED DUE TO LOW | | DISCHARGE PRESSURE IN THE CCW SYSTEM. PRIOR TO THE TEST, THE '21' CCW PUMP | | WAS RUNNING WITH A 90 PSI DISCHARGE PRESSURE. THE START OF THE SECOND PUMP | | ACTUATES A CIRCUIT FOR 2 PUMP OPERATION WHICH WILL AUTO START THE THIRD | | PUMP IF THE PRESSURE IS LESS THAN 107 PSI. THE LICENSEE BELIEVES THAT THE | | THROTTLE POSITION FOR THE DISCHARGE VALVE ON THE '22' CCW PUMP WAS SET SUCH | | THAT WHEN THIS PUMP STARTED, IT PREVENTED THE DISCHARGE PRESSURE FROM | | REACHING 107 PSI. THIS, IN TURN, CAUSED THE THIRD PUMP TO START. | | | | THE LICENSEE HAS DECLARED THE '22' CCW PUMP INOPERABLE AND HAS ENTERED A | | 14-DAY LCO BECAUSE OF THE PROBLEM. THE PROBLEM OCCURRED DURING STARTUP | | WITH THE UNIT CRITICAL IN THE INTERMEDIATE RANGE. | | | | THE LICENSEE WILL INFORM THE RESIDENT INSPECTOR. | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 28844 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: QUAD CITIES REGION: 3 |NOTIFICATION DATE: 05/23/95 | |UNIT: [ ] [2] [ ] STATE: IL |NOTIFICATION TIME: 12:20 [ET]| |RX TYPE: [1] GE-3,[2] GE-3 |EVENT DATE: 05/23/95 | +------------------------------------------------+EVENT TIME: 09:00[CDT]| |NRC NOTIFIED BY: HOUZENGA |LAST UPDATE DATE: 05/23/95 | |HQ OPS OFFICER: LEIGH TROCINE +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |BJ HOLT RDO | |APRE 50.72(b)(2)(vi) OFFSITE NOTIFICATION | | | | | | | | | | | | | | +-----+----------+-------+--------+--------------+--+--------+-----------------+ |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 +------------------------------------------------------------------------------+ | POTENTIAL FOR PUBLIC INTEREST DUE TO NOTIFICATION OF LOCAL FIRE DEPARTMENT | | FOR RESPONSE TO AN ONSITE FIRE. | | | | A FIRE WAS REPORTED AT MOTOR CONTROL CENTER 28-1A, WHICH IS LOCATED IN THE | | UNIT 2 REACTOR BUILDING. THE FIRE BRIGADE WAS DISPATCHED, AND THE OFFSITE | | FIRE DEPARTMENT WAS NOTIFIED. A CONTROL POWER TRANSFORMER FOR A 480-VOLT | | BREAKER (BREAKER 'A3' FOR CORE SPRAY DISCHARGE) HAD BURNT UP AND WAS | | DE-ENERGIZED TO PUT OUT THE FIRE. THE FIRE WAS REPORTED TO BE OUT AT 9:06. | | DAMAGE WAS CONFINED TO THE BREAKER CUBICAL INVOLVED. | | | | THE OFFSITE FIRE DEPARTMENT DID RESPOND TO THE SITE, BUT WAS NOT NEEDED OR | | BROUGHT ONSITE. THE RESIDENT INSPECTOR WAS NOTIFIED BY THE LICENSEE. | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 28845 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: COMANCHE PEAK REGION: 4 |NOTIFICATION DATE: 05/23/95 | |UNIT: [1] [2] [ ] STATE: TX |NOTIFICATION TIME: 14:13 [ET]| |RX TYPE: [1] W-4-LP,[2] W-4-LP |EVENT DATE: 05/23/95 | +------------------------------------------------+EVENT TIME: 12:37[CDT]| |NRC NOTIFIED BY: COTTON |LAST UPDATE DATE: 05/23/95 | |HQ OPS OFFICER: TIM McGINTY +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |DWIGHT CHAMBERLAIN RDO | |AENS 50.72(b)(1)(v) ENS INOPERABLE | | | | | | | | | | | | | | +-----+----------+-------+--------+--------------+--+--------+-----------------+ |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 +------------------------------------------------------------------------------+ | CAPABILITY TO SOUND OFF-SITE SIRENS BRIEFLY LOST. | | | | AT 1200 CDT, THE EMERGENCY PLANNING ORGANIZATION DETERMINED THAT THE SIRENS | | USED FOR OFF-SITE ALERT AND NOTIFICATION SYSTEM COULD NOT BE ACTUATED. | | CAPABILITY TO ACTUATE THE SIRENS WAS RESTORED BY 1225 CDT. TESTING | | IDENTIFIED THAT THE LOSS OF ACTUATION CAPABILITY MAY HAVE OCCURRED AS EARLY | | AS 1042 CDT ON 5/23/95. | | | | THE CAUSE OF THE MALFUNCTION HAS NOT YET BEEN IDENTIFIED. SOFTWARE | | MANIPULATION IN THE MICROWAVE COMMUNICATION SYSTEM HAS RESULTED IN THE | | ABILITY TO SOUND THE SIRENS. TROUBLESHOOTING IS IN PROGRESS TO DETERMINE | | EXACTLY THE NATURE OF THE MALFUNCTION. | | | | THE LICENSEE HAS NOTIFIED THE RESIDENT INSPECTOR AND LOCAL AUTHORITIES. THE | | LICENSEE WILL BE NOTIFYING THE NRC EMERGENCY PLANNING REPRESENTATIVE AND | | FEMA. | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 28846 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: COOPER REGION: 4 |NOTIFICATION DATE: 05/23/95 | |UNIT: [1] [ ] [ ] STATE: NE |NOTIFICATION TIME: 18:26 [ET]| |RX TYPE: [1] GE-4 |EVENT DATE: 05/23/95 | +------------------------------------------------+EVENT TIME: 17:10[CDT]| |NRC NOTIFIED BY: RICHARD TANDERUP |LAST UPDATE DATE: 05/23/95 | |HQ OPS OFFICER: TIM McGINTY +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |DWIGHT CHAMBERLAIN 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 +------------------------------------------------------------------------------+ | DISCOVERY OF A CONDITION OUTSIDE OF THE PLANT DESIGN BASIS. | | | | THE NRC RESIDENT INSPECTOR QUESTIONED THE LICENSEE'S IMPLEMENTATION OF A | | COMMITMENT MADE IN THE STATION BLACKOUT (SBO) SUBMITTAL TO SECURE THE HIGH | | PRESSURE COOLANT INJECTION (HPCI) SYSTEM AFTER ONE CYCLE OF OPERATION. THE | | INSPECTOR DISCOVERED THAT THE PROCEDURAL GUIDANCE PROVIDED IN RESPONSE TO | | AN SBO EVENT DID NOT SPECIFICALLY REQUIRE PLANT OPERATORS TO SECURE HPCI | | AFTER ONE CYCLE AND MAY HAVE LED OPERATORS TO USE HPCI FOR SBO COPING. THE | | LICENSEE IMPLEMENTED A TEMPORARY PROCEDURE CHANGE NOTICE TO CORRECT THIS | | DISCREPANCY. | | | | THE LICENSEE'S INVESTIGATION INDICATED THAT COOPER NUCLEAR STATION HAD NO | | ANALYSIS DEMONSTRATING THE ABILITY OF HPCI TO MEET THE SBO COPING TIME | | WITHOUT EXCEEDING TEMPERATURE LIMITS IN THE HPCI ROOM. IN ADDITION, A | | REVIEW OF LICENSEE EVENT REPORT NO. 94-018 INDICATED THAT PRIOR TO A | | MODIFICATION MADE IN 1994, THE REACTOR CORE ISOLATION COOLING (RCIC) SYSTEM | | WAS AC POWER DEPENDENT. THIS LED TO A CONDITION WHERE THE RCIC SYSTEM | | (WHICH IS CREDITED FOR SBO COPING) WAS NOT AC INDEPENDENT AS REQUIRED, AND | | THE HPCI SYSTEM WAS NOT ANALYZED FOR MEETING THE SBO COPING REQUIREMENTS. | | THEREFORE, PRIOR TO THE MODIFICATION TO MAKE THE RCIC SYSTEM AC | | INDEPENDENT, THE ABILITY TO MEET THE COPING REQUIREMENTS OF SBO WAS NOT | | ASSURED. THIS WAS A CONDITION THAT WAS OUTSIDE OF THE COOPER NUCLEAR | | STATION DESIGN BASIS. WITH THE TWO CORRECTIVE ACTIONS OF CHANGING THE | | EMERGENCY PROCEDURE FOR LOSS OF ALL SITE AC POWER/SBO AND THE MODIFICATION | | TO THE RCIC SYSTEM, THE LICENSEE IS CURRENTLY WITHIN ITS DESIGN BASIS. | | | | THE RESIDENT INSPECTOR WAS NOTIFIED BY THE LICENSEE. | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 28847 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: FT CALHOUN REGION: 4 |NOTIFICATION DATE: 05/24/95 | |UNIT: [1] [ ] [ ] STATE: NE |NOTIFICATION TIME: 03:03 [ET]| |RX TYPE: [1] CE |EVENT DATE: 05/24/95 | +------------------------------------------------+EVENT TIME: 00:29[CDT]| |NRC NOTIFIED BY: CARLSON |LAST UPDATE DATE: 05/24/95 | |HQ OPS OFFICER: DOUG WEAVER +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |DWIGHT CHAMBERLAIN RDO | |ARPS 50.72(b)(2)(ii) RPS ACTUATION | | | | | | | | | | | | | | +-----+----------+-------+--------+--------------+--+--------+-----------------+ |UNIT |SCRAM CODE|RX CRIT|INIT PWR| INIT RX MODE |CURR PWR| CURR RX MODE | +-----+----------+-------+--------+-----------------+--------+-----------------+ | 1 | M/R Y 100 POWER OPERATION | 0 HOT STANDBY | | | | | | | | | +-----+---------------------------------------------+--------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | MANUAL REACTOR TRIP FROM 100% POWER | | | | THE PLANT WAS MANUALLY TRIPPED TO PREVENT DAMAGE TO THE '3D' REACTOR | | COOLANT PUMP (RCP) MOTOR. THE PLANT RESPONSE TO THE TRIP WAS NORMAL. ALL | | RODS FULLY INSERTED, NO ESFs ACTUATED AND THE MAIN CONDENSER IS AVAILABLE | | TO REMOVE DECAY HEAT. THE PLANT IS STABLE IN HOT STANDBY. | | | | THE PLANT COMPUTER INDICATED AN INCREASING LEVEL IN THE RCP '3D' UPPER | | BEARING OIL RESERVOIR. ANALYSIS OF THE VIBRATION DATA FOR PUMP '3D' | | CONFIRMED WATER INTRUSION TO THE UPPER BEARING OIL RESERVOIR. THE PLANT WAS | | TRIPPED AND RCP '3D' WAS SECURED TO PREVENT DAMAGE TO THE RCP MOTOR. THE | | PROBABLE SOURCE OF THE WATER IN THE OIL RESERVOIR IS THE COMPONENT COOLING | | WATER SYSTEM. THE LICENSEE'S INVESTIGATION CONTINUES. | | | | THE LICENSEE INFORMED THE NRC RESIDENT INSPECTOR. A PRESS RELEASE IS | | PLANNED. | +------------------------------------------------------------------------------+