U.S. Nuclear Regulatory Commission Operations Center Event Reports For 06/17/94 - 06/24/94 ** EVENT NUMBERS ** 27409 27410 27411 27412 27413 27414 +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 27409 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: LIMERICK REGION: 1 |NOTIFICATION DATE: 06/17/94 | |UNIT: [1] [ ] [ ] STATE: PA |NOTIFICATION TIME: 09:23 [ET]| |RX TYPE: [1] GE-4,[2] GE-4 |EVENT DATE: 06/17/94 | +------------------------------------------------+EVENT TIME: 06:01[EDT]| |NRC NOTIFIED BY: GREGORY F. COLLINS |LAST UPDATE DATE: 06/17/94 | |HQ OPS OFFICER: STEVE SANDIN +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |GENE KELLY 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 +------------------------------------------------------------------------------+ | UNIT 1 EXPERIENCED A GROUP "6C" ISOLATION DUE TO A POSSIBLE RADIATION | | MONITORING INSTRUMENT SETPOINT DRIFT. | | | | "AT 0601 HOURS, THE UNIT ONE, DELTA CHANNEL OF THE REACTOR ENCLOSURE | | VENTILATION EXHAUST RADIATION MONITORING SYSTEM (RISH-026-1K609D) TRIPPED | | AND CAUSED A GROUP 6C ISOLATION. IT WAS VERIFIED BY MAIN CONTROL ROOM (MCR) | | PERSONNEL THAT NO HIGH RADIATION CONDITIONS EXISTED AND NO INCREASE WAS IN | | PROGRESS. NO TESTING OR MANIPULATIONS WERE BEING PERFORMED AT THE TIME. | | SYSTEMS AFFECTED BY THE ISOLATION WERE THE PRIMARY CONTAINMENT SAMPLING AND | | POST LOCA RECOMBINER. ALL EXPECTED ACTIONS WERE VERIFIED TO HAVE OCCURRED. | | I&C TECHNICIANS WERE CALLED TO INVESTIGATE. DURING THE PROCESS IT WAS | | VERIFIED ALL FUSES AND RELAYS ARE OPERABLE, HOWEVER THE HIGH/HIGH SETPOINT | | HAS DRIFTED DOWN AND THE ALARM BOARD ASSOCIATED WITH RISH-026-1K609D HAS | | BEEN PINPOINTED AS THE POSSIBLE CAUSE." | | | | THE GROUP "6C" ISOLATION SIGNAL WILL BE RESET FOLLOWING REPAIRS. THE | | LICENSEE INFORMED THE NRC RESIDENT INSPECTOR. | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 27410 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: PERRY REGION: 3 |NOTIFICATION DATE: 06/17/94 | |UNIT: [1] [ ] [ ] STATE: OH |NOTIFICATION TIME: 22:41 [ET]| |RX TYPE: [1] GE-6 |EVENT DATE: 06/17/94 | +------------------------------------------------+EVENT TIME: 22:41[EDT]| |NRC NOTIFIED BY: STIFFLER |LAST UPDATE DATE: 06/17/94 | |HQ OPS OFFICER: WILLIAM HUFFMAN +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |MONTE PHILLIPS RDO | |NINF INFORMATION ONLY | | | | | | | | | | | | | | +-----+----------+-------+--------+--------------+--+--------+-----------------+ |UNIT |SCRAM CODE|RX CRIT|INIT PWR| INIT RX MODE |CURR PWR| CURR RX MODE | +-----+----------+-------+--------+-----------------+--------+-----------------+ | 1 | N N 0 REFUELING | 0 REFUELING | | | | | | | | | +-----+---------------------------------------------+--------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | INFORMATION NOTIFICATION OF DYNAMIC DIAGNOSTIC FLOW TESTING. | | | | A COURTESY NOTIFICATION OF A DYNAMIC DIAGNOSTIC FLOW TEST PER GENERIC | | LETTER 89-10 HAS BEEN PROVIDED. SPECIFICALLY, A PRE-PLANNED ECCS INJECTION | | INTO THE REACTOR VESSEL PER TEST INSTRUCTION 201 WITH THE HIGH PRESSURE | | CORE SPRAY SYSTEM IS PLANNED TO DYNAMICALLY TEST HPCS INJECTION VALVE | | E-22-F004. THE TEST WILL VERIFY THE CAPABILITY OF THE INJECTION VALVE TO | | CLOSE AGAINST FULL DYNAMIC FLOW CONDITIONS DURING HPCS INJECTION. BECAUSE | | THIS TEST INVOLVES ECCS INJECTION INTO THE REACTOR VESSEL, IT REQUIRES | | GENERATION OF A SPECIAL NON-PERIODIC REPORT. | | | | THE NRC RESIDENT INSPECTOR HAS BEEN NOTIFIED. | | | | *** UPDATE FROM STIFFLER TO HUFFMAN AT 2050 EDT ON 6/18/94 *** | | THE LICENSEE REPORTED THAT DURING THE PERFORMANCE OF THE TEST, A LOUD NOISE | | WAS HEARD WHEN THE INJECTION VALVE WAS SHUT. THE TEST WAS IMMEDIATELY | | TERMINATED AND INVESTIGATION INTO THE CAUSE OF THE NOISE WAS COMMENCED. NO | | EVIDENCE OF ANY DAMAGE OR WATER HAMMER COULD BE FOUND. THE PLANT | | ENGINEERING STAFF HAS CONCLUDED THAT THE NOISE WAS NOT UNUSUAL FOR THIS | | TYPE OF DYNAMIC FLOW TEST AND THAT THE TEST SHOULD BE REPEATED. R3DO | | (PHILLIPS) NOTIFIED. | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 27411 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: MAINE YANKEE REGION: 1 |NOTIFICATION DATE: 06/18/94 | |UNIT: [1] [ ] [ ] STATE: ME |NOTIFICATION TIME: 09:50 [ET]| |RX TYPE: [1] CE |EVENT DATE: 06/18/94 | +------------------------------------------------+EVENT TIME: 08:30[EDT]| |NRC NOTIFIED BY: MABEN |LAST UPDATE DATE: 06/18/94 | |HQ OPS OFFICER: CHAUNCEY GOULD +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |GENE KELLY RDO | |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 Y 100 POWER OPERATION | 100 POWER OPERATION | | | | | | | | | +-----+---------------------------------------------+--------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | THE LICENSEE NOTIFIED THE DEPARTMENT OF ENVIRONMENTAL PROTECTION, THE | | NATIONAL RESPONSE CENTER AND THE STATE NUCLEAR SAFETY INSPECTOR OF AN OIL | | SHEEN ON THE BACK RIVER. | | | | THIS SMALL OIL SHEEN OF APPROXIMATELY 1 PINT STEMMING FROM A STORM SEWER | | OUT FALL ORIGINATING FROM RECENT ROOF WORK PERFORMED ON THE TURBINE | | BUILDING WERE RESIDUAL OIL AND TAR WAS WASHED OFF DURING A RECENT RAIN | | STORM. THEY HAVE DISPATCHED A HAZARDOUS RESPONSE TEAM TO PERFORM A | | CLEANUP. THEY WILL INFORM THE RI. | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 27412 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: BRUNSWICK REGION: 2 |NOTIFICATION DATE: 06/19/94 | |UNIT: [ ] [2] [ ] STATE: NC |NOTIFICATION TIME: 15:22 [ET]| |RX TYPE: [1] GE-4,[2] GE-4 |EVENT DATE: 06/19/94 | +------------------------------------------------+EVENT TIME: 12:03[EDT]| |NRC NOTIFIED BY: WOODBURY |LAST UPDATE DATE: 06/19/94 | |HQ OPS OFFICER: WILLIAM HUFFMAN +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |FRANCIS JAPE 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 N 0 COLD SHUTDOWN | 0 COLD SHUTDOWN | | | | | +-----+---------------------------------------------+--------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | INADVERTENT REACTOR CORE ISOLATION COOLING (RCIC) VALVE ISOLATION DURING | | TESTING. | | | | THE FOLLOWING IS THE TEXT OF A FACSIMILE REPORTING THIS EVENT: | | "ON 6/19/94 AT 1203, WHILE UNIT 2 WAS IN COLD SHUTDOWN, THE REACTOR CORE | | ISOLATION COOLING INBOARD ISOLATION VALVE, E51-F007, RECEIVED AN ISOLATION | | SIGNAL AND STROKED CLOSED. THE ISOLATION SIGNAL WAS DUE TO A TECHNICIAN | | HEATING UP A TEMPERATURE ELEMENT THAT IS PART OF THE STEAM LEAK DETECTION | | SYSTEM. THE TEMPERATURE ELEMENT HAD BEEN REMOVED, CALIBRATED, AND | | REINSTALLED. THE POST-MAINTENANCE TEST REQUIRED THAT THE TEMPERATURE | | ELEMENT BE HEATED TO VERIFY THAT THE ISOLATION SIGNAL IS RECEIVED. THE | | PREREQUISITES IN THE PROCEDURE SPECIFY THAT THE E51-F007 VALVE IS CLOSED; | | THEREFORE, NO VALVE TRAVEL WOULD BE EXPECTED. THE MAINTENANCE TECHNICIANS | | DID NOT NOTIFY OPERATIONS THAT THE POST-MAINTENANCE TEST WAS BEING | | PERFORMED; THEREFORE, THE PREREQUISITES WERE NOT VERIFIED AND THE E51-F007 | | VALVE WAS OPEN WHEN THE SIGNAL WAS RECEIVED. | | | | THE EVENT HAS NO SAFETY SIGNIFICANCE. THE PLANT RESPONDED AS EXPECTED. | | | | THE ROOT CAUSE WILL BE DETERMINED. THE VALVE WILL REMAIN IN THE CLOSED | | POSITION AS REQUIRED BY PLANT CONDITIONS." END OF TEXT. | | | | THE NRC RESIDENT INSPECTOR HAS BEEN NOTIFIED. | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 27413 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: OYSTER CREEK REGION: 1 |NOTIFICATION DATE: 06/19/94 | |UNIT: [1] [ ] [ ] STATE: NJ |NOTIFICATION TIME: 15:25 [ET]| |RX TYPE: [1] GE-2 |EVENT DATE: 06/19/94 | +------------------------------------------------+EVENT TIME: 13:15[EDT]| |NRC NOTIFIED BY: DAVID PIETRUSKI |LAST UPDATE DATE: 06/19/94 | |HQ OPS OFFICER: WILLIAM HUFFMAN +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |GENE KELLY RDO | |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 Y 100 POWER OPERATION | 100 POWER OPERATION | | | | | | | | | +-----+---------------------------------------------+--------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | OFFSITE NOTIFICATION CONCERNING A CAPTURED SEA TURTLE. | | | | A SEA TURTLE WAS RETRIEVED FROM THE LICENSEE'S INTAKE CANAL. THE TURTLE IS | | BEING SENT TO THE MARINE STRANDING CENTER IN AZTECAN, NJ. THE NEW JERSEY | | DEPARTMENT OF ENVIRONMENT PROTECTION WAS NOTIFIED WHICH MAKES THIS EVENT | | REPORTABLE UNDER 10 CFR 50.72 AS AN OFFSITE NOTIFICATION. | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 27414 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: BRUNSWICK REGION: 2 |NOTIFICATION DATE: 06/19/94 | |UNIT: [ ] [2] [ ] STATE: NC |NOTIFICATION TIME: 17:11 [ET]| |RX TYPE: [1] GE-4,[2] GE-4 |EVENT DATE: 06/19/94 | +------------------------------------------------+EVENT TIME: 15:57[EDT]| |NRC NOTIFIED BY: WOODBURY |LAST UPDATE DATE: 06/19/94 | |HQ OPS OFFICER: WILLIAM HUFFMAN +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: UNUSUAL EVENT +-----------------------------+ |10 CFR SECTION: |FRANCIS JAPE RDO | |AAEC 50.72(a)(1)(i) EMERGENCY DECLARED |CECIL THOMAS EO | | |LOUZONIS FEMA | | | | | | | | | | +-----+----------+-------+--------+--------------+--+--------+-----------------+ |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 +------------------------------------------------------------------------------+ | UNUSUAL EVENT DUE TO LOSS OF AUDIO INDICATION FROM ANNUNCIATORS IN THE | | CONTROL ROOM. | | | | THE FOLLOWING IS THE TEXT OF A FACSIMILE REPORTING THIS EVENT: | | "ON 6/19/94 AT 1557 WHILE UNIT 2 WAS IN COLD SHUTDOWN, AN ANNUNCIATOR RELAY | | CAUGHT FIRE. THE FIRE WAS EXTINGUISHED. THE LOSS OF THE RELAY CAUSED A LOSS | | OF ALL AUDIBLE ANNUNCIATORS IN THE CONTROL ROOM. AT 1612, THE UNIT ENTERED | | AN UNUSUAL EVENT DUE TO THE LOSS OF AUDIBLE ANNUNCIATORS FOR GREATER THAN | | 15 MINUTES. | | | | THE PLANT IS IN COLD SHUTDOWN AND PARAMETERS ARE BEING MONITORED WITH | | ADDITIONAL PERSONNEL IN THE CONTROL ROOM. VISIBLE ANNUNCIATION IS STILL | | AVAILABLE. | | | | A FUSE WAS FOUND TO BE BLOWN. (THE AFFECTED) RELAY WAS PART OF THE | | ANNUNCIATOR RING BACK CIRCUITRY AND IS NOT RELIED UPON. THE RELAY WAS | | ELECTRICALLY ISOLATED AND THE BLOWN FUSE WAS REPLACED. | | | | THE AUDIBLE ANNUNCIATION WAS RESTORED AND THE UNUSUAL EVENT TERMINATED AT | | 1654." END OF TEXT. | | | | THE LICENSEE STATES THAT INDICATION OF A PROBLEM WAS FIRST DETERMINED BY A | | BURNING SMELL IN THE CONTROL ROOM. A SEARCH OF CABINETS FOUND THE "BURNING" | | RELAY AND A DRY CHEMICAL EXTINGUISHER WAS USED ON IT. WITHIN SEVERAL | | MINUTES OF THIS INITIAL EVENT IT WAS NOTED THAT ANNUNCIATORS WERE NOT | | PROVIDING AN AUDIBLE ALARM WHEN THEY CAME IN. IT WAS QUICKLY DETERMINED | | THAT A FUSE TO THE POWER SUPPLY ASSOCIATED WITH THE AUDIBLE ALARM CIRCUITRY | | HAD BEEN BLOWN. ADDITIONAL PERSONNEL WERE STATIONED IN THE CONTROL ROOM TO | | OBSERVE FOR ANY ANNUNCIATORS WHICH MIGHT COME IN WHILE REPAIRS WERE IN | | PROGRESS. | | | | INVESTIGATION FOUND NO DAMAGE TO ANY OTHER ELECTRICAL CIRCUITRY IN THE | | CABINET FROM THE FAULTED RELAY. THE RELAY WAS ELECTRICALLY ISOLATED AND THE | | POWER SUPPLY FUSE REPLACE AND POWER TO THE AUDIO ANNUNCIATION CIRCUITRY | | RESTORED. THE FAULTED RELAY HAS NOT YET BEEN REPLACED AND ITS FUNCTION, | | WHICH IS TO PROVIDE AN AUDIBLE SIGNAL WHEN AN ANNUNCIATOR HAS CLEARED, WAS | | LEFT UNESCORTED. | | | | THE LICENSEE STATES THAT THE AUDIO PORTION OF THEIR RELAY ANNUNCIATION | | CIRCUITRY IS APPARENTLY POWERED BY ONLY ONE POWER SUPPLY. | | | | THE NRC RESIDENT INSPECTOR, STATE AND LOCAL AUTHORITIES WERE NOTIFIED OF | | THE EVENT. | +------------------------------------------------------------------------------+