U.S. Nuclear Regulatory Commission Operations Center Event Reports For 12/06/95 - 12/07/95 ** EVENT NUMBERS ** 29672 29673 29674 29675 29676 29677 29678 29679 29680 29681 29682 +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 29672 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: MILLSTONE REGION: 1 |NOTIFICATION DATE: 12/06/95 | |UNIT: [ ] [ ] [3] STATE: CT |NOTIFICATION TIME: 02:38 [ET]| |RX TYPE: [1] GE-3,[2] CE,[3] W-4-LP |EVENT DATE: 12/05/95 | +------------------------------------------------+EVENT TIME: 23:45[EST]| |NRC NOTIFIED BY: ROBERT ENOCH |LAST UPDATE DATE: 12/06/95 | |HQ OPS OFFICER: LEIGH TROCINE +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |WALTER PASCIAK RDO | |APRE 50.72(b)(2)(vi) OFFSITE NOTIFICATION | | | | | | | | | | | | | | +-----+----------+-------+--------+--------------+--+--------+-----------------+ |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 +------------------------------------------------------------------------------+ | OFFSITE NOTIFICATION OF THE OVERFLOW OF THE SITE SEWAGE SYSTEM | | | | AT 23:45 ON DECEMBER 5, 1995, A SEWAGE WATER PUMP TRIPPED FOR UNKNOWN | | REASONS WHILE THE BACKUP SEWAGE WATER PUMP WAS OUT OF SERVICE. THERE WAS | | NO PLANT AFFECT, BUT THERE WAS THE POTENTIAL FOR SEWAGE TO DISCHARGE TO | | RECEIVING WATER. WHILE THE INCIDENT WAS OCCURRING, THE LICENSEE ESTIMATED | | THAT 800 TO 1,000 GALLONS OF SEWAGE WATER WENT DOWN A TROUGHED AREA ONTO A | | GRASSY AREA. IT STARTED TO RAIN APPROXIMATELY ONE HOUR LATER, AND THE | | LICENSEE IS POSTULATING THAT THE RAIN MAY HAVE CARRIED SOME OF THE SEWAGE | | INTO THE SOUND THROUGH THE STORM DRAINS. THE OVERFLOW WAS TERMINATED | | WITHIN APPROXIMATELY 40 MINUTES WHEN THE BACKUP PUMP WAS RESTORED TO | | SERVICE. | | | | THE LICENSEE IS CURRENTLY IN THE PROCESS OF ROPING OFF THE AREA. | | | | THE LICENSEE NOTIFIED THE NRC RESIDENT INSPECTOR AND STATE AND LOCAL | | AUTHORITIES. | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 29673 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: MAINE YANKEE REGION: 1 |NOTIFICATION DATE: 12/06/95 | |UNIT: [1] [ ] [ ] STATE: ME |NOTIFICATION TIME: 03:31 [ET]| |RX TYPE: [1] CE |EVENT DATE: 12/06/95 | +------------------------------------------------+EVENT TIME: 02:31[EST]| |NRC NOTIFIED BY: JERRY MABEN |LAST UPDATE DATE: 12/06/95 | |HQ OPS OFFICER: LEIGH TROCINE +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |WALTER PASCIAK RDO | |DDDD 73.71 UNSPECIFIED PARAGRAPH | | |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 N 0 REFUELING | 0 REFUELING | | | | | | | | | +-----+---------------------------------------------+--------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | DISCOVERY OF MISPLACED SAFEGUARDS INFORMATION | | | | AT APPROXIMATELY 02:31, THE LICENSEE DISCOVERED MISPLACED SAFEGUARDS | | INFORMATION. IMMEDIATE COMPENSATORY MEASURES WERE TAKEN UPON DISCOVERY. | | (REFER TO THE HOO LOG FOR ADDITIONAL INFORMATION.) | | | | THE LICENSEE WILL NOTIFY THE NRC RESIDENT INSPECTOR AND THE STATE NUCLEAR | | SAFETY INSPECTOR. | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 29674 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: QUAD CITIES REGION: 3 |NOTIFICATION DATE: 12/06/95 | |UNIT: [1] [ ] [ ] STATE: IL |NOTIFICATION TIME: 03:53 [ET]| |RX TYPE: [1] GE-3,[2] GE-3 |EVENT DATE: 12/06/95 | +------------------------------------------------+EVENT TIME: 01:15[CST]| |NRC NOTIFIED BY: MIKE SWEGLE |LAST UPDATE DATE: 12/06/95 | |HQ OPS OFFICER: LEIGH TROCINE +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |ROGER LANKSBURY RDO | |AIND 50.72(b)(2)(iii)(D) ACCIDENT MITIGATION | | |NLCO TECH SPEC LCO A/S | | | | | | | | | | | +-----+----------+-------+--------+--------------+--+--------+-----------------+ |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 +------------------------------------------------------------------------------+ | FAILURE OF A HIGH PRESSURE COOLANT INJECTION (HPCI) PUMP TURBINE STEAM | | SUPPLY VALVE TO OPEN WITHIN THE REQUIRED TIME FRAME DURING A ROUTINE | | SURVEILLANCE | | | | DURING THE PERFORMANCE OF A QUARTERLY HPCI PUMP OPERABILITY SURVEILLANCE, | | THE HPCI STOP VALVE (STEAM SUPPLY VALVE TO THE HPCI TURBINE) FAILED TO OPEN | | WITHIN THE REQUIRED TESTING TIME FRAME. THIS VALVE TOOK 20.8 SECONDS TO | | FULLY OPEN, AND THE SURVEILLANCE REQUIRED THIS VALVE TO FULLY OPEN BETWEEN | | 4.9 SECONDS AND 14.6 SECONDS. | | | | HPCI IS A SINGLE TRAIN SYSTEM, AND A 14-DAY TECHNICAL SPECIFICATION | | LIMITING CONDITION FOR OPERATION WAS ENTERED BECAUSE THE HPCI STOP VALVE | | OPENED SLOWLY. ALL OTHER EMERGENCY CORE COOLING SYSTEMS ARE CURRENTLY | | OPERABLE AND AVAILABLE. THE LICENSEE IS CURRENTLY TROUBLESHOOTING THIS | | FAILURE. | | | | THE LICENSEE NOTIFIED THE NRC RESIDENT INSPECTOR. | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 29675 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: HATCH REGION: 2 |NOTIFICATION DATE: 12/06/95 | |UNIT: [ ] [2] [ ] STATE: GA |NOTIFICATION TIME: 10:46 [ET]| |RX TYPE: [1] GE-4,[2] GE-4 |EVENT DATE: 12/06/95 | +------------------------------------------------+EVENT TIME: 08:40[EST]| |NRC NOTIFIED BY: JIM ANDERSON |LAST UPDATE DATE: 12/06/95 | |HQ OPS OFFICER: LEIGH TROCINE +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |DAVID VERRELLI 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 +------------------------------------------------------------------------------+ | PARTIAL ISOLATION OF GROUP 1 VALVES (SMALL BORE VALVES) WHILE PLACING THE | | HYDROGEN INJECTION SYSTEM IN SERVICE FOLLOWING AN OUTAGE | | | | WHILE PLACING THE HYDROGEN INJECTION SYSTEM IN SERVICE FOLLOWING AN OUTAGE, | | THE MAIN STEAM RADIATION MONITORS INCREASED TO THE HIGH-HIGH LEVEL SETPOINT | | CAUSING AN ISOLATION OF GROUP 1 (SMALL BORE) VALVES AND A TRIP OF THE STEAM | | PIPING EXHAUSTER. THE TWO VALVES THAT CLOSED WERE SAMPLING VALVES. ALL OF | | THE OTHER VALVES THAT WOULD HAVE BEEN AFFECTED WERE ALREADY CLOSED. ALL | | SYSTEMS FUNCTIONED AS REQUIRED. | | | | THE LICENSEE IS CURRENTLY INVESTIGATING THE ROOT CAUSE OF THIS EVENT. AT | | THIS TIME, THE LICENSEE SUSPECTS THAT THERE MAY HAVE BEEN A FAILURE IN THE | | HYDROGEN INJECTION FLOW CONTROL INDICATION SO THAT THERE WAS NO FEEDBACK TO | | THE FLOW CONTROL VALVE. | | | | THE LICENSEE HAS NOTIFIED THE NRC RESIDENT INSPECTOR. | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 29676 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: MILLSTONE REGION: 1 |NOTIFICATION DATE: 12/06/95 | |UNIT: [1] [ ] [ ] STATE: CT |NOTIFICATION TIME: 11:04 [ET]| |RX TYPE: [1] GE-3,[2] CE,[3] W-4-LP |EVENT DATE: 12/06/95 | +------------------------------------------------+EVENT TIME: 10:42[EST]| |NRC NOTIFIED BY: DON CLEARY |LAST UPDATE DATE: 12/06/95 | |HQ OPS OFFICER: LEIGH TROCINE +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |WALTER PASCIAK 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 N 0 COLD SHUTDOWN | 0 COLD SHUTDOWN | | | | | | | | | +-----+---------------------------------------------+--------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | GROUP 2 AND 3 ENGINEERED SAFETY FEATURES ACTUATIONS (ISOLATION OF SHUTDOWN | | COOLING AND INITIATION OF STANDBY GAS TREATMENT) WHILE IN COLD SHUTDOWN | | | | DURING THE PERFORMANCE OF MAINTENANCE ON A LOW-LOW LEVEL SWITCH, THE UNIT | | RECEIVED GROUP 2 AND 3 ENGINEERED SAFETY FEATURES ACTUATIONS. THIS | | ISOLATED SHUTDOWN COOLING AND INITIATED STANDBY GAS TREATMENT. ALL SYSTEMS | | FUNCTIONED AS REQUIRED. IMMEDIATELY AFTER THE EVENT, THE LICENSEE RESTORED | | SHUTDOWN COOLING AND ISOLATED STANDBY GAS TREATMENT. THERE WAS NO FUEL IN | | THE CORE, BUT THE GATES TO THE SPENT FUEL POOL WERE OPEN. SPENT FUEL POOL | | TEMPERATURE DID NOT INCREASE. | | | | THE LICENSEE IS CURRENTLY INVESTIGATING THE ROOT CAUSE OF THIS EVENT. | | | | THE LICENSEE HAS NOTIFIED THE NRC RESIDENT INSPECTOR. | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 29677 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: PILGRIM REGION: 1 |NOTIFICATION DATE: 12/06/95 | |UNIT: [1] [ ] [ ] STATE: MA |NOTIFICATION TIME: 16:52 [ET]| |RX TYPE: [1] GE-3 |EVENT DATE: 12/06/95 | +------------------------------------------------+EVENT TIME: 14:45[EST]| |NRC NOTIFIED BY: MARTIN MANTENFEL |LAST UPDATE DATE: 12/06/95 | |HQ OPS OFFICER: DOUG WEAVER +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |WALTER PASCIAK RDO | |AIND 50.72(b)(2)(iii)(D) ACCIDENT MITIGATION | | |NLCO TECH SPEC LCO A/S | | | | | | | | | | | +-----+----------+-------+--------+--------------+--+--------+-----------------+ |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 +------------------------------------------------------------------------------+ | REACTOR CORE ISOLATION COOLING (RCIC) SYSTEM INOPERABLE | | | | AN INVERTER THAT SUPPLIES POWER TO THE RCIC SYSTEM CONTROLS LOCATED IN THE | | MAIN CONTROL ROOM FAILED. A CONTROL ROOM ANNUNCIATOR FOR THIS INVERTER HAS | | ALARMED AND CLEARED SEVERAL TIMES. THE LICENSEE HAS DECLARED RCIC | | INOPERABLE AND HAS PLACED THE PLANT IN A 14-DAY LIMITING CONDITION FOR | | OPERATION. THE LICENSEE IS INVESTIGATING THE CAUSE OF THE INVERTER | | FAILURE. | | | | THE 'A' EMERGENCY DIESEL GENERATOR IS ALSO INOPERABLE FOR PLANNED | | MAINTENANCE. IT IS EXPECTED TO BE RETURNED TO OPERABILITY TODAY. | | | | THE LICENSEE INFORMED THE NRC RESIDENT INSPECTOR. | | | | * * * UPDATE AT 2236 ON 12/06/95, BY GRACIA TAKEN BY WEAVER * * * | | | | RCIC BECAME OPERABLE AT 2230. THE HOO NOTIFIED THE R1DO (PASCIAK). | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 29678 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: CLINTON REGION: 3 |NOTIFICATION DATE: 12/06/95 | |UNIT: [1] [ ] [ ] STATE: IL |NOTIFICATION TIME: 18:03 [ET]| |RX TYPE: [1] GE-6 |EVENT DATE: 12/06/95 | +------------------------------------------------+EVENT TIME: 14:30[CST]| |NRC NOTIFIED BY: GREG HALVERSON |LAST UPDATE DATE: 12/06/95 | |HQ OPS OFFICER: DOUG WEAVER +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |ROGER LANKSBURY 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 +------------------------------------------------------------------------------+ | CONTROL ROD DRIVE (CRD) FLOW NOT PROPERLY ACCOUNTED FOR IN THE CALORIMETRIC | | EQUATION. | | | | THIS IS A 24-HOUR REPORT IN ACCORDANCE WITH LICENSE CONDITION 2.C.1. CRD | | FLOW MAY BE NONCONSERVATIVELY ACCOUNTED FOR IN THE CALORIMETRIC BECAUSE | | SOME OF THE FLOW IS DIVERTED FROM THE CRD SYSTEM PRIOR TO REACHING THE FLOW | | INSTRUMENTATION IN THE SYSTEM. THIS CAUSES CRD FLOW TO INDICATE LOWER THAN | | ACTUAL AS RELATED TO THE CALORIMETRIC CALCULATION. THE POTENTIAL NET | | RESULT OF THIS DISCREPANCY IS THAT THERMAL POWER MAY BE UNDERESTIMATED BY | | AS MUCH AS 1.5 MWt. THE PLANT'S LICENSED POWER LIMIT IS 2894 MWt. | | | | IF THE PRELIMINARY CALCULATION OF 1.5 MWt NONCONSERVATIVE IS CORRECT, THEN | | IT MAY ALSO BE CONCLUDED THAT THE PLANT HAS PROBABLY SLIGHTLY EXCEEDED ITS | | THERMAL POWER LIMIT IN THE PAST DUE TO THIS ERROR. | | | | THE LICENSEE IS CURRENTLY LIMITING POWER TO 2892 MWt UNTIL THIS ISSUE IS | | RESOLVED. THE LICENSEE INVESTIGATED THIS PROBLEM BECAUSE OF RECENT SIMILAR | | DISCOVERIES AT NINE MILE POINT, RIVER BEND, AND GRAND GULF. | | | | THE LICENSEE INFORMED THE NRC RESIDENT INSPECTOR. | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 29679 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: WATTS BAR REGION: 2 |NOTIFICATION DATE: 12/06/95 | |UNIT: [1] [ ] [ ] STATE: TN |NOTIFICATION TIME: 18:41 [ET]| |RX TYPE: [1] W-4-LP,[2] W-4-LP |EVENT DATE: 12/06/95 | +------------------------------------------------+EVENT TIME: 16:41[EST]| |NRC NOTIFIED BY: TOM WALLACE |LAST UPDATE DATE: 12/06/95 | |HQ OPS OFFICER: DOUG WEAVER +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |DAVID VERRELLI 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 N 0 COLD SHUTDOWN | 0 COLD SHUTDOWN | | | | | | | | | +-----+---------------------------------------------+--------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | REACTOR TRIP SIGNAL GENERATED WHILE IN MODE 5 | | | | DURING TROUBLESHOOTING ON SOURCE RANGE CHANNEL N-131, ELECTRICAL SHORTING | | OCCURRED IN THE PRE-AMP CABINET. THE TECHNICAL SUPPORT SYSTEM ENGINEER AND | | A LICENSED OPERATOR ASSIGNED TO THE TROUBLESHOOTING ACTIVITY MADE THE | | DECISION TO REMOVE POWER FROM THE SOURCE RANGE INSTRUMENT TO MINIMIZE | | POSSIBLE DAMAGE. REMOVING POWER FROM THE SOURCE RANGE INSTRUMENT CAUSED A | | REACTOR TRIP SIGNAL TO BE GENERATED. THE REACTOR PROTECTION SYSTEM | | RESPONDED AS DESIGNED. | | | | ALTHOUGH PLANT OPERATING CONDITIONS DID NOT EXIST WHICH WOULD HAVE | | GENERATED THE TRIP SIGNAL, THE EVENT IS BEING REPORTED AS A VALID SIGNAL | | BECAUSE THE TRIP LOGIC WAS MADE UP BY THE REMOVAL OF POWER FROM THE | | INSTRUMENT. AN INVESTIGATION IS UNDERWAY TO DETERMINE THE CAUSE OF THE | | ELECTRICAL SHORTING. | | | | THE LICENSEE INFORMED THE NRC RESIDENT INSPECTOR. | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 29680 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: PALO VERDE REGION: 4 |NOTIFICATION DATE: 12/06/95 | |UNIT: [1] [2] [3] STATE: AZ |NOTIFICATION TIME: 19:01 [ET]| |RX TYPE: [1] CE,[2] CE,[3] CE |EVENT DATE: 12/06/95 | +------------------------------------------------+EVENT TIME: 16:00[MST]| |NRC NOTIFIED BY: DOUGLAS COXON |LAST UPDATE DATE: 12/06/95 | |HQ OPS OFFICER: DOUG WEAVER +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |TOM STETKA 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 | | 2 | N Y 100 POWER OPERATION | 100 POWER OPERATION | | 3 | N Y 100 POWER OPERATION | 100 POWER OPERATION | +-----+---------------------------------------------+--------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | DISCOVERY OF CRIMINAL ACT INVOLVING AN INDIVIDUAL GRANTED ACCESS TO THE | | SITE | | | | A CONTRACTOR EMPLOYEE WAS FOUND TO HAVE PROVIDED FALSE STATEMENTS ON HIS | | EMPLOYMENT APPLICATION. THE EMPLOYEE IS NOT CURRENTLY WORKING ON SITE. | | (REFER TO THE HOO LOG FOR ADDITIONAL INFORMATION.) | | | | THE LICENSEE WILL INFORM THE NRC RESIDENT INSPECTOR. | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 29681 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: COOPER REGION: 4 |NOTIFICATION DATE: 12/07/95 | |UNIT: [1] [ ] [ ] STATE: NE |NOTIFICATION TIME: 00:09 [ET]| |RX TYPE: [1] GE-4 |EVENT DATE: 12/05/95 | +------------------------------------------------+EVENT TIME: 14:37[CST]| |NRC NOTIFIED BY: STEVE SMALLFOOT |LAST UPDATE DATE: 12/07/95 | |HQ OPS OFFICER: LEIGH TROCINE +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |TOM STETKA RDO | |NLTR LICENSEE 24 HR REPORT | | | | | | | | | | | | | | +-----+----------+-------+--------+--------------+--+--------+-----------------+ |UNIT |SCRAM CODE|RX CRIT|INIT PWR| INIT RX MODE |CURR PWR| CURR RX MODE | +-----+----------+-------+--------+-----------------+--------+-----------------+ | 1 | N N 0 COLD SHUTDOWN | 0 COLD SHUTDOWN | | | | | | | | | +-----+---------------------------------------------+--------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | INOPERABILITY OF THE FIRE SUPPRESSION SYSTEM DURING PREVENTATIVE | | MAINTENANCE AND FAILURE TO MAKE A 24-HOUR NOTIFICATION WITHIN THE REQUIRED | | TIME FRAME | | | | AT 14:37 CST ON DECEMBER 5, 1995, THE CONTROL SWITCHES FOR FIRE PUMPS 'D' | | AND 'E' WERE PLACED IN THE PULL-TO-LOCK POSITION IN ORDER TO ALLOW THE OIL | | TO BE CHANGED IN THE FIRE SYSTEM JOCKEY PUMP. BOTH OF THESE FIRE PUMPS | | WERE RETURNED TO SERVICE AT 17:15 CST ON DECEMBER 5, 1995. | | | | WHEN THE FIRE SUPPRESSION SYSTEM IS INOPERABLE, THE LICENSEE'S TECHNICAL | | SPECIFICATIONS REQUIRE THAT A 24-HOUR TELEPHONE NOTIFICATION BE MADE TO THE | | NRC. THIS REPORT WAS NOT MADE WITHIN THE REQUIRED 24-HOUR TIME FRAME. AS | | A RESULT, THE LICENSEE HAS GENERATED A CONDITION REPORT AND PLANS TO | | FORWARD THIS ISSUE TO MANAGEMENT FOR REVIEW. | | | | THE LICENSEE HAS INFORMED THE NRC RESIDENT INSPECTOR. | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 29682 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: BRAIDWOOD REGION: 3 |NOTIFICATION DATE: 12/07/95 | |UNIT: [1] [ ] [ ] STATE: IL |NOTIFICATION TIME: 04:21 [ET]| |RX TYPE: [1] W-4-LP,[2] W-4-LP |EVENT DATE: 12/07/95 | +------------------------------------------------+EVENT TIME: 02:40[CST]| |NRC NOTIFIED BY: MIKE BEBOARD |LAST UPDATE DATE: 12/07/95 | |HQ OPS OFFICER: LEIGH TROCINE +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |ROGER LANKSBURY RDO | |ARPS 50.72(b)(2)(ii) RPS ACTUATION | | |AESF 50.72(b)(2)(ii) ESF ACTUATION | | | | | | | | | | | +-----+----------+-------+--------+--------------+--+--------+-----------------+ |UNIT |SCRAM CODE|RX CRIT|INIT PWR| INIT RX MODE |CURR PWR| CURR RX MODE | +-----+----------+-------+--------+-----------------+--------+-----------------+ | 1 | M/R N 0 HOT STANDBY | 0 HOT STANDBY | | | | | | | | | +-----+---------------------------------------------+--------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | MANUAL REACTOR TRIP WHILE IN MODE 3 DUE TO A ROD CONTROL URGENT FAILURE | | DURING TESTING | | | | PRIOR TO THIS EVENT, THE UNIT WAS IN MODE 3 AT NORMAL OPERATING TEMPERATURE | | AND PRESSURE, AND THE ROD CONTROL SYSTEM WAS BEING TESTED IN PREPARATION | | FOR ROD DROP TESTING. AFTER SHUTDOWN BANK 'E' WAS WITHDRAWN 50 STEPS, A | | ROD CONTROL URGENT FAILURE OCCURRED. THIS RESULTED IN THE LOSS OF THE | | ABILITY TO MANUALLY STEP THE CONTROL RODS. AS A RESULT, THE LICENSEE | | MANUALLY OPENED THE REACTOR TRIP BREAKERS TO ALLOW THE RODS TO FULLY INSERT | | INTO THE CORE. (THIS WAS NOT A REQUIRED ACTION BUT WAS PERFORMED AS A | | CONSERVATIVE MEASURE TO FACILITATE ROD CONTROL SYSTEM REPAIRS.) ALL RODS | | FULLY INSERTED. A FEEDWATER ISOLATION WAS RECEIVED (AS EXPECTED FROM THE | | MANUAL OPENING OF THE REACTOR TRIP BREAKERS) AND WAS SUBSEQUENTLY RESET. | | ALL SYSTEMS FUNCTIONED AS REQUIRED. THE LICENSEE IS CURRENTLY PLANNING TO | | TROUBLESHOOT AND REPAIR THE FAILURE. | | | | THE UNIT IS CURRENTLY STABLE IN MODE 3. THE LICENSEE IS USING PRESSURIZER | | HEATERS AND SPRAYS, NORMAL CHARGING AND MAKEUP, AND REACTOR COOLANT PUMPS | | FOR PRIMARY PRESSURE, INVENTORY, AND TRANSPORT CONTROL. NORMAL FEEDWATER | | IS BEING SUPPLIED TO THE STEAM GENERATORS, AND SECONDARY STEAM IS BEING | | DUMPED TO THE CONDENSER. | | | | THE LICENSEE NOTIFIED THE NRC RESIDENT INSPECTOR. | +------------------------------------------------------------------------------+