U.S. Nuclear Regulatory Commission Operations Center Event Reports For 08/24/94 - 08/25/94 ** EVENT NUMBERS ** 27701 27702 27703 27704 27705 +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 27701 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: GRAND GULF REGION: 2 |NOTIFICATION DATE: 08/24/94 | |UNIT: [1] [ ] [ ] STATE: MS |NOTIFICATION TIME: 02:57 [ET]| |RX TYPE: [1] GE-6 |EVENT DATE: 08/24/94 | +------------------------------------------------+EVENT TIME: 00:24[CDT]| |NRC NOTIFIED BY: EHRHARDT |LAST UPDATE DATE: 08/24/94 | |HQ OPS OFFICER: DICK JOLLIFFE +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |JACK CRLENJAK 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 | A/R Y 100 POWER OPERATION | 0 HOT SHUTDOWN | | | | | | | | | +-----+---------------------------------------------+--------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | - MANUAL Rx SCRAM DUE TO INCREASED MAIN T/G EXCITER BEARING VIBRATION - | | | | THE VIBRATION ON THE MAIN TURBINE GENERATOR EXCITER FRONT BEARING #11 | | INCREASED FROM 2.1 MILS TO 8.0 MILS FOR UNKNOWN REASONS. | | | | CONTROL ROOM OPERATORS MANUALLY SCRAMMED THE REACTOR FROM 100% POWER TO | | REMOVE THE MAIN TURBINE GENERATOR FROM SERVICE. | | | | ALL CONTROL RODS INSERTED COMPLETELY. STEAM IS BEING DUMPED TO THE MAIN | | CONDENSER. | | | | THE PLANT IS STABLE IN CONDITION 3 (HOT SHUTDOWN). | | | | LICENSEE IS INVESTIGATING THE CAUSE OF THE INCREASED VIBRATION. | | | | LICENSEE INFORMED THE NRC RESIDENT INSPECTOR. | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 27702 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: HADDAM NECK REGION: 1 |NOTIFICATION DATE: 08/24/94 | |UNIT: [1] [ ] [ ] STATE: CT |NOTIFICATION TIME: 11:12 [ET]| |RX TYPE: [1] W-4-LP |EVENT DATE: 08/24/94 | +------------------------------------------------+EVENT TIME: 10:45[EDT]| |NRC NOTIFIED BY: BIIL BARTRON |LAST UPDATE DATE: 08/24/94 | |HQ OPS OFFICER: WILLIAM HUFFMAN +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: UNUSUAL EVENT +-----------------------------+ |10 CFR SECTION: |JOHN KINNEMAN RDO | |AAEC 50.72(a)(1)(i) EMERGENCY DECLARED |BOB DENNIG EO | |ASHU 50.72(b)(1)(i)(A) PLANT S/D REQD BY TS |BELCHER FEMA | | | | | | | | | | +-----+----------+-------+--------+--------------+--+--------+-----------------+ |UNIT |SCRAM CODE|RX CRIT|INIT PWR| INIT RX MODE |CURR PWR| CURR RX MODE | +-----+----------+-------+--------+-----------------+--------+-----------------+ | 1 | N Y 100 POWER OPERATION | 90 POWER OPERATION | | | | | | | | | +-----+---------------------------------------------+--------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | UNUSUAL EVENT DECLARED DUE TO A POWER RUNBACK WHILE IN A TECH SPEC REQUIRED | | SHUTDOWN LIMITING CONDITION OF OPERATION (LCO). | | | | THE INDIVIDUAL ROD POSITION INDICATOR (IRPI) FOR CONTROL ROD 29 WAS | | EXHIBITING SOME ERRATIC BEHAVIOR. WORK WAS INITIATED TO AFFECT REPAIRS | | WHICH REQUIRED THAT THE IRPI CIRCUIT FOR ROD 29 PLUS TWO ADDITIONAL ROD | | IRPI'S BE DE-ENERGIZED. THIS PLACED THE LICENSEE IN A TECH SPEC LCO WHICH | | REQUIRED THE PLANT TO SHUTDOWN IF NOT RESTORED WITHIN SIX HOURS | | (TS 3.1.3.2.C). | | | | WHILE REPAIRING THE ROD 29 IRPI, AN I&C TECHNICIAN INADVERTENTLY INITIATED | | A LOAD RUNBACK TO 90% WHEN A FALSE ROD BOTTOM SIGNAL WAS INSERTED. BECAUSE | | THE LICENSEE WAS IN A SHUTDOWN LCO, THE RUNBACK WAS CONSERVATIVELY | | INTERPRETED AS A COMMENCEMENT OF SHUTDOWN. THIS, IN TURN, IS CLASSIFIED AS | | AN UNUSUAL EVENT PER THE LICENSEE'S EPIP'S (ACTUAL REDUCTION OF POWER WHILE | | IN A TECH SPEC SHUTDOWN LCO). LOAD WAS STABILIZED AT 90%. IRPI REPAIRS WERE | | COMPLETED AT 11:02 EDT AND THE TECH SPEC ACTION STATEMENT AND THE UNUSUAL | | EVENT TERMINATED. | | | | ALL SYSTEMS FUNCTIONED AS REQUIRED DURING THE RUNBACK. POWER WILL BE | | RETURNED TO 100% FOLLOWING A CRITIQUE. THE NRC RESIDENT, STATE AND LOCAL | | AUTHORITIES HAVE BEEN INFORMED. | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 27703 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: INDIAN POINT REGION: 1 |NOTIFICATION DATE: 08/24/94 | |UNIT: [ ] [3] [ ] STATE: NY |NOTIFICATION TIME: 14:44 [ET]| |RX TYPE: [2] W-4-LP,[3] W-4-LP |EVENT DATE: 08/24/94 | +------------------------------------------------+EVENT TIME: 11:00[EDT]| |NRC NOTIFIED BY: VITO MESSINA |LAST UPDATE DATE: 08/24/94 | |HQ OPS OFFICER: DOUG WEAVER +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: UNUSUAL EVENT +-----------------------------+ |10 CFR SECTION: |JOHN KINNEMAN RDO | |AAEC 50.72(a)(1)(i) EMERGENCY DECLARED |ED GOODWIN EO | | |HERSKO FEMA | | | | | | | | | | +-----+----------+-------+--------+--------------+--+--------+-----------------+ |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 +------------------------------------------------------------------------------+ | UNUSUAL EVENT DECLARED DUE TO THE TRANSPORTATION OF AN INJURED AND | | POTENTIALLY CONTAMINATED INDIVIDUAL OFF-SITE. | | | | AT 1100 EDT A PLANT OPERATOR FELL APPROXIMATELY TWELVE FEET ONTO CONCRETE | | THROUGH AN OPEN HATCH IN THE PRIMARY AUXILIARY BUILDING. THE MAN WAS | | DISCOVERED AT 1230 EDT AFTER HE WAS IDENTIFIED AS MISSING. THE INDIVIDUAL | | WAS WEARING ANTI-Cs, AND DUE TO THE NATURE OF THE INJURIES, WAS NOT ABLE TO | | BE TURNED OVER TO BE SURVEYED FOR CONTAMINATION. THE PERSON HAS APPARENTLY | | SUFFERED SOME BROKEN RIBS. THE INJURED OPERATOR IS BEING TRANSPORTED | | OFFSITE TO THE HUDSON VALLEY MEDICAL CENTER. THE UNUSUAL EVENT WAS | | DECLARED AT 1433 WHEN THE MAN LEFT THE SITE IN AN AMBULANCE. NO | | CONTAMINATION WAS FOUND ON THE TRANSFER ROUTE BETWEEN THE FALL LOCATION AND | | THE AMBULANCE. | | | | THE LICENSEE NOTIFIED THE RESIDENT INSPECTOR, STATE AND LOCAL AUTHORITIES. | | THE LICENSEE WILL BE ISSUING A PRESS RELEASE. | | | | * * * UPDATE AT 1600 ON 8/24/94 BY DONG TAKEN BY WEAVER * * * | | | | THE UE WAS TERMINATED AT 1548 BASED ON A COMPLETE SURVEY OF THE MAN AT THE | | OFFSITE MEDICAL CENTER REVEALING NO CONTAMINATION. HOO NOTIFIED R1DO | | (KINNEMAN), EO (GOODWIN), FEMA (BAGWELL). | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 27704 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: PRAIRIE ISLAND REGION: 3 |NOTIFICATION DATE: 08/24/94 | |UNIT: [1] [2] [ ] STATE: MN |NOTIFICATION TIME: 16:34 [ET]| |RX TYPE: [1] W-2-LP,[2] W-2-LP |EVENT DATE: 08/24/94 | +------------------------------------------------+EVENT TIME: 14:48[CDT]| |NRC NOTIFIED BY: LES ANDERSON |LAST UPDATE DATE: 08/24/94 | |HQ OPS OFFICER: DOUG WEAVER +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |JIM MCCORMICKBARGER 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 | | 2 | N Y 100 POWER OPERATION | 100 POWER OPERATION | | | | | +-----+---------------------------------------------+--------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | OFFSITE NOTIFICATION OF A SPILL OF NON CONTAMINATED SLUDGE. | | | | THE LICENSEE NOTIFIED THE MINNESOTA POLLUTION CONTROL AGENCY (MPCA) OF A | | NEUTRALIZING TANK SLUDGE/WATER SPILL AT PRAIRE ISLAND. THE SPILL CONSISTED | | OF 300 GALLONS OF SLUDGE WITH A pH OF 4.8 AND 100 GALLONS OF WATER WITH A | | pH OF 7.7. THE SLUDGE WAS SPILLED ONTO CONCRETE AND GRAVEL AND WAS | | PROMPTLY RECOVERED. THE CAUSE OF THE SPILL WAS AN IMPROPER LINING OF THE | | DEWATERING DUMPSTER. THE SPILL WAS REPORTED TO MPCA BECAUSE THE DISCHARGE | | OF THE WATER WAS VIA A PATH OTHER THAN THE PERMITTED DISCHARGE PATH. | | | | THE LICENSEE WILL INFORM THE NRC RESIDENT INSPECTOR. | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 27705 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: LASALLE REGION: 3 |NOTIFICATION DATE: 08/25/94 | |UNIT: [ ] [2] [ ] STATE: IL |NOTIFICATION TIME: 06:02 [ET]| |RX TYPE: [1] GE-5,[2] GE-5 |EVENT DATE: 08/25/94 | +------------------------------------------------+EVENT TIME: 03:27[CDT]| |NRC NOTIFIED BY: HENRY |LAST UPDATE DATE: 08/25/94 | |HQ OPS OFFICER: DICK JOLLIFFE +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |JIM MCCORMICKBARGER RDO | |ARPS 50.72(b)(2)(ii) RPS ACTUATION | | | | | | | | | | | | | | +-----+----------+-------+--------+--------------+--+--------+-----------------+ |UNIT |SCRAM CODE|RX CRIT|INIT PWR| INIT RX MODE |CURR PWR| CURR RX MODE | +-----+----------+-------+--------+-----------------+--------+-----------------+ | | | | | 2 | A/R Y 100 POWER OPERATION | 0 HOT SHUTDOWN | | | | | +-----+---------------------------------------------+--------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | -Rx SCRAM DUE TO HI APRM FLUX SIGNAL WHEN 5 MAIN STEAM BYPASS VALVES OPENED | | | | AT 2303 (CDT) ON 08/24/94, WHILE UNIT 2 WAS AT 100% POWER, THE #1 MAIN | | STEAM BYPASS VALVE OPENED, THEN IMMEDIATELY CLOSED FOR UNKNOWN REASONS. | | | | INSTRUMENT MAINTENANCE TECHNICIANS BEGAN TO TROUBLESHOOT THE SYSTEM. | | | | AT 2343 (CDT) ON 08/24/84, THE SAME EVENT HAPPENED AGAIN. | | | | AT 0327 (CDT) ON 08/25/94, ALL 5 MAIN STEAM BYPASS VALVES OPENED | | UNEXPECTEDLY. THE REACTOR THEN SCRAMMED FROM 100% POWER DUE TO HIGH APRM | | FLUX SIGNAL. CONTROL ROOM OPERATORS MANUALLY TRIPPED THE MAIN TURBINE | | (NORMAL ACTION AT LASALLE). ALL CONTROL RODS INSERTED COMPLETELY. | | THE 'D' IRM DID NOT DRIVE IN FOLLOWING THE SCRAM. STEAM IS BEING DUMPED | | TO THE MAIN CONDENSER. | | | | UNIT 2 IS STABLE IN CONDITION 3 (HOT SHUTDOWN). | | | | LICENSEE IS INVESTIGATING THE CAUSE AND DETERMINING CORRECTIVE ACTIONS. | +------------------------------------------------------------------------------+