U.S. Nuclear Regulatory Commission Operations Center Event Reports For 09/26/97 - 09/29/97 ** EVENT NUMBERS ** 32789 32993 32994 32995 32996 32997 32998 32999 33000 33001 33002 33003 33004 !!!!!!!!! THIS EVENT HAS BEEN RETRACTED. THIS EVENT HAS BEEN RETRACTED !!!!!!! +----------------------------------+ +-----------------------+ |GENERAL INFORMATION or OTHER | |EVENT NUMBER: 32789 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |LICENSEE: 3M COMPANY |NOTIFICATION DATE: 08/20/97 | | CITY: BROOKINGS REGION: 4 |NOTIFICATION TIME: 11:53 [ET]| | COUNTY: STATE: SD |EVENT DATE: 08/12/97 | |LICENSE#: 22-00057-61 AGREEMENT: N |EVENT TIME: 02:25[CDT]| | DOCKET: |LAST UPDATE DATE: 09/26/97 | | +-----------------------------+ | |PERSON ORGANIZATION| | |BRUCE BURGESS RDO | | |COOL EO | +------------------------------------------------+WILLIAM JOHNSON RDO4 | |NRC NOTIFIED BY: LOESER | | |HQ OPS OFFICER: CHAUNCEY GOULD | | +------------------------------------------------+ | |EMERGENCY CLASS: NOT APPLICABLE | | |10 CFR SECTION: | | |MAAA 36.83(a)(1) UNSHIELD STUCK SOURCE | | | | | | | | | | | | | | +------------------------------------------------+-----------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | THE LICENSEE REPORTED A SOURCE STUCK IN AN UNSHIELDED POSITION IN THEIR | | LARGE POOL IRRADIATOR. | | | | THE INCIDENT OCCURRED AT THEIR BROOKINGS, SD FACILITY. THE STUCK SOURCE WAS | | CAUSED BY AN ELECTRICAL SHORT AND NOT A MECHANICAL MECHANISM FAILURE. THE | | SOURCE WAS UNSTUCK WITHIN 1/2 HOUR WHEN THE OPERATOR TURNED THE MACHINE KEY | | TO THE 'OFF' POSITION AND THE SOURCE WENT DOWN. | | | | * * * UPDATE AT 1617 ON 09/26/97 FROM ENTWHISTLE TAKEN BY STRANSKY * * * | | | | THE LICENSEE IS RETRACTING THIS NOTIFICATION BASED UPON DISCUSSIONS WITH | | NRC REGION III. THE OPERATIONS OFFICER NOTIFIED R3DO MONTY PHILLIPS. | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 32993 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: COMANCHE PEAK REGION: 4 |NOTIFICATION DATE: 09/26/97 | |UNIT: [1] [2] [ ] STATE: TX |NOTIFICATION TIME: 13:50 [ET]| |RX TYPE: [1] W-4-LP,[2] W-4-LP |EVENT DATE: 09/26/97 | +------------------------------------------------+EVENT TIME: 12:00[CDT]| |NRC NOTIFIED BY: CHARLES COTTON |LAST UPDATE DATE: 09/26/97 | |HQ OPS OFFICER: STEVE SANDIN +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |ELMO COLLINS RDO | |ACNC 50.72(b)(1)(ii)(C) COND OUTSIDE EOPS | | | | | | | | | | | | | | +-----+----------+-------+--------+--------------+--+--------+-----------------+ |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 +------------------------------------------------------------------------------+ | THE LICENSEE DISCOVERED THEY DO NOT HAVE SAFETY RELATED CONTAINMENT | | RECIRCULATION COOLER FANS AS REQUIRED. | | | | THE WESTINGHOUSE OWNERS GROUP GENERIC GUIDELINES FOR EMERGENCY RESPONSE | | ASSUMES THAT SAFETY RELATED CONTAINMENT RECIRC COOLER FANS MIX THE | | CONTAINMENT AIR VOLUME. IT WAS DISCOVERED THAT THE PLANT DOES NOT HAVE | | SAFETY RELATED CONTAINMENT RECIRC FANS AND THE DESIGN DOCUMENTS DEPEND ON | | CONTAINMENT SPRAY TO MIX THE HYDROGEN IN THE CONTAINMENT AIR VOLUME. | | IN THE PLANT'S EMERGENCY RESPONSE GUIDELINES, THE CONTAINMENT SPRAY PUMPS | | ARE STOPPED BASED ON CONTAINMENT PRESSURE. PROCEDURE CHANGES HAVE BEEN | | INITIATED TO REMOVE THE STEPS WHICH SECURE THE CONTAINMENT SPRAY SYSTEMS. | | | | THE LICENSEE WILL INFORM THE NRC RESIDENT INSPECTOR. | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 32994 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: QUAD CITIES REGION: 3 |NOTIFICATION DATE: 09/26/97 | |UNIT: [1] [2] [ ] STATE: IL |NOTIFICATION TIME: 14:28 [ET]| |RX TYPE: [1] GE-3,[2] GE-3 |EVENT DATE: 09/26/97 | +------------------------------------------------+EVENT TIME: 13:28[CDT]| |NRC NOTIFIED BY: RAY VENCI |LAST UPDATE DATE: 09/27/97 | |HQ OPS OFFICER: BOB STRANSKY +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |MONTE PHILLIPS RDO | |ASHU 50.72(b)(1)(i)(A) PLANT S/D REQD BY TS | | |AINA 50.72(b)(2)(iii)(A) POT UNABLE TO SAFE SD | | | | | | | | | | | +-----+----------+-------+--------+--------------+--+--------+-----------------+ |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 +------------------------------------------------------------------------------+ | INADEQUATE PLANT SAFE SHUTDOWN PROCEDURES IN THE EVENT OF A POSTULATED FIRE | | | | THE LICENSEE'S REVIEW OF SAFE SHUTDOWN PROCEDURES REVEALED THAT, IN MANY | | INSTANCES, OPERATORS WERE NOT DIRECTED TO SHED NON-SAFE SHUTDOWN LOADS. | | SPECIFICALLY, THE PROCEDURES FAILED TO DIRECT THE TRIPPING OF LOADS FROM | | 480 VAC, 250 VDC AND 125 VDC BUSES IN THE EVENT OF AN APPENDIX R POSTULATED | | FIRE. THIS ACTION IS REQUIRED BY THE PLANT SAFE SHUTDOWN ANALYSIS TO | | ENSURE OPERATION OF SAFE SHUTDOWN EQUIPMENT. | | | | THE LICENSEE HAS DECLARED ALL SAFE SHUTDOWN PATHS INOPERABLE, AND BOTH | | UNITS HAVE ENTERED A 67 DAY LIMITING CONDITION FOR OPERATION ACTION | | STATEMENT. | | | | THE LICENSEE INFORMED THE NRC RESIDENT INSPECTOR. | | | | * * * UPDATE AT 2145 ON 09/26/97 FROM MacLENNAN TAKEN BY STRANSKY * * * | | | | AS A RESULT OF THE ISSUE ORIGINALLY REPORTED, THE LICENSEE HAS CHOSEN TO | | TAKE UNIT 2 TO CONDITION 4 (COLD SHUTDOWN). ADDITIONALLY, SAFE SHUTDOWN | | PROCEDURES FOR UNIT 1 ARE BEING REVIEWED AND REVISED, AND A DEDICATED FIRE | | BRIGADE IS BEING STAFFED. | | | | THE LICENSEE INFORMED THE NRC RESIDENT INSPECTOR. | | | | THE OPERATIONS OFFICER NOTIFIED THE R3DO MONTE PHILLIPS. | | | | * * * UPDATE AT 1830 ON 09/27/97 FROM SMITH TAKEN BY STRANSKY * * * | | | | UNIT 2 IS CURRENTLY IN CONDITION 3 (HOT SHUTDOWN). THE FOLLOWING ACTIONS | | HAVE BEEN IMPLEMENTED BY THE LICENSEE: AN ENHANCED FIRE WATCH PROGRAM HAS | | BEEN ESTABLISHED IN ALL HIGH VULNERABILITY AREAS, AND CONTINUOUS FIRE | | WATCHES ARE BEING POSTED DURING ALL CUTTING, WELDING AND GRINDING | | ACTIVITIES. AN ENHANCED TRANSIENT COMBUSTIBLE MATERIAL PROGRAM HAS BEEN | | IMPLEMENTED THAT INCLUDES CONTINUOUS MONITORING IN HIGH VULNERABILITY | | AREAS. ENHANCED FIRE FIGHTING RESPONSE CAPABILITIES HAVE ALSO BEEN | | IMPLEMENTED, INCLUDING A QUICK RESPONSE TEAM AND PRESTAGED FIRE FIGHTING | | EQUIPMENT. A FIRE WALL IS BEING CONSTRUCTED ON THE TURBINE FLOOR. AN | | INDEPENDENT SYSTEM FOR LOW PRESSURE INJECTION TO THE REACTOR VESSEL HAS | | BEEN INSTALLED IN BOTH UNITS. | | | | THE FOLLOWING ACTIONS ARE PLANNED OR ARE IN PROGRESS: UNIT 2 IS BEING | | TAKEN TO CONDITION 4 (COLD SHUTDOWN), SAFE SHUTDOWN PROCEDURES ARE BEING | | REVIEWED AND REVISED TO ENSURE THAT UNIT 1 CAN BE PLACED IN A SAFE SHUTDOWN | | CONDITION WHILE MAINTAINING UNIT 2 STABLE IN A SAFE SHUTDOWN CONDITION | | DURING AN APPENDIX R FIRE. THE LICENSEE PLANS TO COMPLETE THESE ACTIONS | | BY 10/06/97. | | | | THE LICENSEE INFORMED THE NRC RESIDENT INSPECTOR. | | | | THE OPERATIONS OFFICER NOTIFIED THE R3DO MONTE PHILLIPS. | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 32995 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: POINT BEACH REGION: 3 |NOTIFICATION DATE: 09/26/97 | |UNIT: [1] [2] [ ] STATE: WI |NOTIFICATION TIME: 15:42 [ET]| |RX TYPE: [1] W-2-LP,[2] W-2-LP |EVENT DATE: 09/26/97 | +------------------------------------------------+EVENT TIME: 13:55[CDT]| |NRC NOTIFIED BY: K. RATHGABER |LAST UPDATE DATE: 09/26/97 | |HQ OPS OFFICER: BOB STRANSKY +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |MONTE PHILLIPS RDO | |AOUT 50.72(b)(1)(ii)(B) OUTSIDE DESIGN BASIS | | |ADAS 50.72(b)(2)(i) DEG/UNANALYZED COND | | | | | | | | | | | +-----+----------+-------+--------+--------------+--+--------+-----------------+ |UNIT |SCRAM CODE|RX CRIT|INIT PWR| INIT RX MODE |CURR PWR| CURR RX MODE | +-----+----------+-------+--------+-----------------+--------+-----------------+ | 1 | N N 0 COLD SHUTDOWN | 0 COLD SHUTDOWN | | 2 | N Y 100 POWER OPERATION | 100 POWER OPERATION | | | | | +-----+---------------------------------------------+--------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | BOTH UNITS OUTSIDE PLANT DESIGN BASIS DURING PREVIOUS EDG TESTING. | | | | ON 09/03/97, DURING A ROUTINE TEST OF UNIT 2 EMERGENCY DIESEL GENERATOR | | (EDG) G03, EDG G03 FAILED TO START AND WAS TAKEN OUT OF SERVICE. | | SUBSEQUENTLY, THE LICENSEE DETERMINED THAT EDG G03 HAD BEEN INOPERABLE | | SINCE 08/18/97. DURING THE PERIOD IN WHICH EDG G03 WAS INOPERABLE, UNIT 1 | | EDG G01 HAD BEEN REMOVED FROM SERVICE FOR ROUTINE SURVEILLANCE TESTING FOR | | APPROXIMATELY 3.5 HOURS. AS A RESULT, WITH UNIT 1 EDG G02 INOPERABLE, THE | | ONLY OPERABLE EDG WAS UNIT 2 EDG G04, AND THE ONLY OPERABLE POWER SUPPLY | | TRAIN WAS UNIT 2, TRAIN B. THIS CONFIGURATION WAS OUTSIDE THE PLANT DESIGN | | BASIS OF BOTH UNITS. | | | | THE LICENSEE INFORMED THE NRC RESIDENT INSPECTOR. | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 32996 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: PRAIRIE ISLAND REGION: 3 |NOTIFICATION DATE: 09/26/97 | |UNIT: [ ] [2] [ ] STATE: MN |NOTIFICATION TIME: 18:22 [ET]| |RX TYPE: [1] W-2-LP,[2] W-2-LP |EVENT DATE: 09/26/97 | +------------------------------------------------+EVENT TIME: 16:50[CDT]| |NRC NOTIFIED BY: BILL MATHER |LAST UPDATE DATE: 09/26/97 | |HQ OPS OFFICER: BOB STRANSKY +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |MONTE PHILLIPS RDO | |ASHU 50.72(b)(1)(i)(A) PLANT S/D REQD BY TS | | | | | | | | | | | | | | +-----+----------+-------+--------+--------------+--+--------+-----------------+ |UNIT |SCRAM CODE|RX CRIT|INIT PWR| INIT RX MODE |CURR PWR| CURR RX MODE | +-----+----------+-------+--------+-----------------+--------+-----------------+ | | | | | 2 | N Y 100 POWER OPERATION | 99 POWER OPERATION | | | | | +-----+---------------------------------------------+--------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | UNIT 2 SHUTDOWN IN ACCORDANCE WITH PLANT TECHNICAL SPECIFICATIONS. | | | | AT 1550 CDT ON 09/26/97, THE UNIT 2 CONTAINMENT MAINTENANCE AIRLOCK FAILED | | ITS VOLUMETRIC LEAKAGE TEST AND WAS DECLARED INOPERABLE. THE LICENSEE | | ENTERED 24 HOUR TECHNICAL SPECIFICATION LIMITING CONDITION FOR OPERATION | | (LCO) ACTION STATEMENT 3.6.M.3 TO REPAIR THE AIRLOCK OR BE IN HOT SHUTDOWN | | WITHIN THE FOLLOWING SIX HOURS. AT 1650 CDT, THE LICENSEE BEGAN A SHUTDOWN | | OF UNIT 2 IN ORDER TO COMPLY WITH THE LCO. THE LICENSEE IS CONTINUING IN | | EFFORTS TO REPAIR THE AIRLOCK, BUT IS PREPARED TO PROCEED TO COLD SHUTDOWN | | IF THE AIRLOCK CANNOT BE REPAIRED. | | | | THE LICENSEE INFORMED THE NRC RESIDENT INSPECTOR. | | | | NOTE: SEE RELATED EVENT #32999. | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 32997 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: MONTICELLO REGION: 3 |NOTIFICATION DATE: 09/26/97 | |UNIT: [1] [ ] [ ] STATE: MN |NOTIFICATION TIME: 20:16 [ET]| |RX TYPE: [1] GE-3 |EVENT DATE: 09/26/97 | +------------------------------------------------+EVENT TIME: 18:45[CDT]| |NRC NOTIFIED BY: STOCKAM |LAST UPDATE DATE: 09/26/97 | |HQ OPS OFFICER: BOB STRANSKY +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |MONTE PHILLIPS 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 +------------------------------------------------------------------------------+ | HPCI PUMP COULD CAVITATE PRIOR TO SWAPOVER FROM CST TO SUPPRESSION POOL. | | | | WHILE REVIEWING THE SETPOINT FOR HIGH PRESSURE COOLANT INJECTION (HPCI) | | AND REACTOR CORE ISOLATION COOLING (RCIC) SWAPOVER FROM THE CONDENSATE | | STORAGE TANK (CST) TO THE SUPPRESSION POOL, THE LICENSEE DETERMINED THAT | | VORTEXING COULD CAUSE AIR ENTRAINMENT INTO THE HPCI PUMP PRIOR TO SWAPOVER | | TO THE SUPPRESSION POOL, DECREASING THE HPCI FLOW RATE. THIS CONDITION | | COULD OCCUR IF ONLY ONE CST WAS LINED UP FOR SUCTION PRIOR TO THE EVENT. | | THE HPCI PUMP SUCTION IS CURRENTLY ALIGNED TO THE SUPPRESSION POOL. | | | | THE LICENSEE WILL INFORM THE NRC RESIDENT INSPECTOR. | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 32998 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: OCONEE REGION: 2 |NOTIFICATION DATE: 09/26/97 | |UNIT: [ ] [ ] [3] STATE: SC |NOTIFICATION TIME: 22:26 [ET]| |RX TYPE: [1] B&W-L-LP,[2] B&W-L-LP,[3] B&W-L-LP |EVENT DATE: 09/26/97 | +------------------------------------------------+EVENT TIME: 22:07[EDT]| |NRC NOTIFIED BY: FRED OWENS |LAST UPDATE DATE: 09/26/97 | |HQ OPS OFFICER: BOB STRANSKY +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |JOHN POTTER RDO | |ASHU 50.72(b)(1)(i)(A) PLANT S/D REQD BY TS | | | | | | | | | | | | | | +-----+----------+-------+--------+--------------+--+--------+-----------------+ |UNIT |SCRAM CODE|RX CRIT|INIT PWR| INIT RX MODE |CURR PWR| CURR RX MODE | +-----+----------+-------+--------+-----------------+--------+-----------------+ | | | | | | | | | 3 | N Y 100 POWER OPERATION | 100 POWER OPERATION | +-----+---------------------------------------------+--------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | UNIT 3 SHUTDOWN TO COMPLY WITH PLANT TECHNICAL SPECIFICATIONS. | | | | THE FOLLOWING IS THE TEXT OF A FACSIMILE SUBMITTED BY THE LICENSEE: | | "UNIT 3 IS BEING SHUT DOWN TO REPLACE THE ELECTRIC MOTOR FOR THE 3B | | REACTOR BUILDING COOLING UNIT. THIS SHUTDOWN IS REQUIRED PER TECHNICAL | | SPECIFICATION 3.3.5.b. THE MOTOR FAILED TO START DURING ROUTINE TESTING | | AT 0943 ON MONDAY 09/22/97. UNIT 3 ENTERED A 7 DAY LCO AT THAT TIME. | | SUBSEQUENT INVESTIGATION REVEALED THAT THE FAN MOTOR WOULD HAVE TO BE | | REPLACED. UNIT 3 IS BEING SHUT DOWN AND COOLED TO BELOW CONTAINMENT | | INTEGRITY REQUIREMENTS IN PREPARATION FOR THE MOTOR REPLACEMENT." | | | | THE LICENSEE INFORMED THE NRC RESIDENT INSPECTOR. | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 32999 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: PRAIRIE ISLAND REGION: 3 |NOTIFICATION DATE: 09/27/97 | |UNIT: [ ] [2] [ ] STATE: MN |NOTIFICATION TIME: 00:06 [ET]| |RX TYPE: [1] W-2-LP,[2] W-2-LP |EVENT DATE: 09/26/97 | +------------------------------------------------+EVENT TIME: 22:53[CDT]| |NRC NOTIFIED BY: WEIGENENT |LAST UPDATE DATE: 09/27/97 | |HQ OPS OFFICER: FANGIE JONES +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |MONTE PHILLIPS 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 | +-----+----------+-------+--------+-----------------+--------+-----------------+ | | | | | 2 | N Y 40 POWER OPERATION | 0 HOT STANDBY | | | | | +-----+---------------------------------------------+--------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | STEAM GENERATOR WATER LEVEL EXCEEDED MAXIMUM DESIGN LEVEL FOR MAIN STEAM | | LINE BREAK ANALYSIS. | | | | AT 2253 CDT ON 09/26/97, UNIT 2 WAS SHUTTING DOWN DUE TO A PREVIOUS PROBLEM | | WITH CONTAINMENT MAINTENANCE AIRLOCK LEAKAGE (SEE EVENT #32996). THE STEAM | | GENERATOR WATER LEVEL EXCEEDED THE MAXIMUM ALLOWED IN THE MAIN STEAM LINE | | BREAK ANALYSIS DUE TO PROBLEMS WITH THE FEEDWATER LEVEL CONTROL SYSTEM. THE | | LICENSEE IS INVESTIGATING THE CAUSE AND DETERMINING CORRECTIVE ACTION. | | | | THE LICENSEE WILL INFORM THE NRC RESIDENT INSPECTOR. | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 33000 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: BRAIDWOOD REGION: 3 |NOTIFICATION DATE: 09/27/97 | |UNIT: [ ] [2] [ ] STATE: IL |NOTIFICATION TIME: 09:16 [ET]| |RX TYPE: [1] W-4-LP,[2] W-4-LP |EVENT DATE: 09/27/97 | +------------------------------------------------+EVENT TIME: 07:13[CDT]| |NRC NOTIFIED BY: MIKE DEBOARD |LAST UPDATE DATE: 09/27/97 | |HQ OPS OFFICER: FANGIE JONES +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |MONTE PHILLIPS 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 | +-----+----------+-------+--------+-----------------+--------+-----------------+ | | | | | 2 | M/R N 0 HOT STANDBY | 0 HOT STANDBY | | | | | +-----+---------------------------------------------+--------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | MANUAL Rx TRIP DUE TO LOSS OF PROPER ROD POSITION INDICATION DURING A TEST. | | | | WITH UNIT 2 IN MODE 3 (HOT STANDBY) WITH THE REACTOR TRIP BREAKERS CLOSED, | | A FAILURE OF CONTROL ROD B-8 DIGITAL ROD POSITION INDICATION (DRPI) | | OCCURRED DURING A CONTROL ROD DRPI OPERABILITY SURVEILLANCE TEST. WHILE | | CONTROL BANK C WAS BEING WITHDRAWN, WITH GROUP DEMAND POSITION OF 48 STEPS, | | THE DRPI INDICATION FOR CONTROL ROD B-8 WENT TO 96 STEPS. CONTROL ROOM | | OPERATORS MANUALLY OPENED THE REACTOR TRIP BREAKERS IN ACCORDANCE WITH THE | | SURVEILLANCE TEST PROCEDURE AND TECHNICAL SPECIFICATION 3.1.3.3. ALL | | CONTROL RODS FULLY INSERTED. | | | | THE MAIN FEEDWATER SYSTEM ISOLATED (ENGINEERED SAFETY FEATURE ACTUATION), | | AS EXPECTED. THE LICENSEE IMMEDIATELY RESET THE MAIN FEEDWATER ISOLATION | | SIGNAL AND RESTORED THE MAIN FEEDWATER SYSTEM TO NORMAL. | | | | THE LICENSEE IS INVESTIGATING THE CAUSE AND DETERMINING CORRECTIVE ACTION. | | | | THE LICENSEE INFORMED THE NRC RESIDENT INSPECTOR. | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 33001 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: VERMONT YANKEE REGION: 1 |NOTIFICATION DATE: 09/27/97 | |UNIT: [1] [ ] [ ] STATE: VT |NOTIFICATION TIME: 21:29 [ET]| |RX TYPE: [1] GE-4 |EVENT DATE: 09/27/97 | +------------------------------------------------+EVENT TIME: 21:08[EDT]| |NRC NOTIFIED BY: EMPEY |LAST UPDATE DATE: 09/27/97 | |HQ OPS OFFICER: BOB STRANSKY +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: UNUSUAL EVENT +-----------------------------+ |10 CFR SECTION: |TOM MOSLAK RDO | |AAEC 50.72(a)(1)(i) EMERGENCY DECLARED |ROBERT CAPRA EO | |APRE 50.72(b)(2)(vi) OFFSITE NOTIFICATION |CALDWELL FEMA | | |RICHARD BARRETT IRD | | | | | | | +-----+----------+-------+--------+--------------+--+--------+-----------------+ |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 +------------------------------------------------------------------------------+ | UNUSUAL EVENT DECLARED DUE TO RECEIPT OF A SEISMIC ALARM. | | | | THE LICENSEE DECLARED AN UNUSUAL EVENT DUE TO THE RECEIPT OF A SEISMIC | | ALARM. THE LICENSEE'S EMERGENCY PLAN REQUIRES THE DECLARATION OF AN | | UNUSUAL EVENT DUE TO THE SENSING OF AN ONSITE EARTHQUAKE BY DETECTION | | DEVICES. THE LICENSEE DOES NOT HAVE ANY OTHER INDICATION OF AN EARTHQUAKE, | | AND A FALSE ALARM HAD BEEN RECEIVED ON 05/31/97. (REFER TO EVENT #32420.) | | ELECTRICAL CONTROLS TECHNICIANS HAVE BEEN DISPATCHED TO DETERMINE THE | | VALIDITY OF THE ALARM. THE LICENSEE HAS INFORMED THE NRC RESIDENT | | INSPECTOR AND STATE GOVERNMENT AGENCIES. | | | | * * * UPDATE AT 2318 ON 09/27/97 FROM BRIAN CROKE TAKEN BY STRANSKY * * * | | | | AT 2310 ON 09/27/97, THE LICENSEE TERMINATED THE UNUSUAL EVENT AFTER | | DETERMINING THAT THE SEISMIC ALARM WAS SPURIOUS. THE LICENSEE WILL INFORM | | THE NRC RESIDENT INSPECTOR. THE OPERATIONS OFFICER NOTIFIED THE R1DO TOM | | MOSLAK AND FEMA CALDWELL. | | | | * * * UPDATE AT 0033 ON 09/28/97 FROM BRIAN CROKE TAKEN BE JOLLIFFE * * * | | | | AT 2334 ON 09/27/97, THE LICENSEE ISSUED A PRESS RELEASE. THE LICENSEE | | WILL INFORM THE NRC RESIDENT INSPECTOR. THE OPERATIONS OFFICER NOTIFIED | | THE R1DO TOM MOSLAK. | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 33002 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: BEAVER VALLEY REGION: 1 |NOTIFICATION DATE: 09/27/97 | |UNIT: [1] [ ] [ ] STATE: PA |NOTIFICATION TIME: 22:57 [ET]| |RX TYPE: [1] W-3-LP,[2] W-3-LP |EVENT DATE: 09/27/97 | +------------------------------------------------+EVENT TIME: 21:25[EDT]| |NRC NOTIFIED BY: JOHN THOMAS |LAST UPDATE DATE: 09/27/97 | |HQ OPS OFFICER: BOB STRANSKY +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |TOM MOSLAK 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 38 POWER OPERATION | 38 POWER OPERATION | | | | | | | | | +-----+---------------------------------------------+--------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | EDG AUTOMATICALLY STARTED BUT DID NOT LOAD DURING A BUS TRANSFER TEST. | | | | THE FOLLOWING IS THE TEXT OF A FACSIMILE SUBMITTED BY THE LICENSEE: | | "AT 2125, A SCHEDULED SURVEILLANCE OF THE 4kV BUS AUTO TRANSFER FROM UNIT | | TO SYSTEM (OFFSITE) SUPPLY WAS PERFORMED. DURING THE TRANSFER OF THE | | 'D' 4kV BUS TO THE OFFSITE SUPPLY, THE #2 EMERGENCY DIESEL GENERATOR | | AUTOSTARTED, THE 'B' TRAIN CONTROL ROOM AIR HANDLING UNIT TRIPPED, | | AND TWO NON-EMERGENCY 480V BUSES NORMALLY POWERED FROM THE 'D' 4kV BUS | | ('D' AND 'H' 480V BUSES) TRANSFERRED TO THEIR ALTERNATE POWER SUPPLY. | | NO OTHER ACTUATIONS OCCURRED, AND ALL AFFECTED BUSES REMAINED ENERGIZED. | | THE #2 EMERGENCY DIESEL GENERATOR WAS NOT REQUIRED TO LOAD AND ITS OUTPUT | | BREAKER REMAINED OPEN. | | | | THE ABOVE COMPONENTS WERE RETURNED TO THEIR PRETEST CONDITIONS. ALL | | REQUIRED EMERGENCY POWER SOURCES ARE OPERABLE. THE 4kV BUSES WILL REMAIN | | POWERED FROM THE OFFSITE POWER SUPPLY FOR TONIGHT'S SCHEDULED SHUTDOWN | | FOR REFUELING. THE CAUSE OF THE ABOVE ACTUATIONS WILL BE INVESTIGATED." | | | | THE LICENSEE INFORMED THE NRC RESIDENT INSPECTOR. | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 33003 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: CLINTON REGION: 3 |NOTIFICATION DATE: 09/28/97 | |UNIT: [1] [ ] [ ] STATE: IL |NOTIFICATION TIME: 12:42 [ET]| |RX TYPE: [1] GE-6 |EVENT DATE: 09/28/97 | +------------------------------------------------+EVENT TIME: 08:45[CDT]| |NRC NOTIFIED BY: TIM HOLLAND |LAST UPDATE DATE: 09/28/97 | |HQ OPS OFFICER: BOB STRANSKY +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |MONTE PHILLIPS RDO | |ADAS 50.72(b)(2)(i) DEG/UNANALYZED COND | | | | | | | | | | | | | | +-----+----------+-------+--------+--------------+--+--------+-----------------+ |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 +------------------------------------------------------------------------------+ | CONTROL ROOM VENTILATION CHILLERS NOT SEISMICALLY MOUNTED. | | | | THE FOLLOWING IS TEXT OF A FACSIMILE SUBMITTED BY THE LICENSEE: | | "WHILE PERFORMING A LEAK CHECK ON THE #0VC13CA DEHYDRATOR, TWO OF THE FOUR | | HOLDDOWN BOLTS WERE FOUND TO BE ERODED. THE DEHYDRATOR WAS ALSO FOUND TO | | BE SITTING ON A PIECE OF WOOD 7 INCHES X 7 INCHES X 1/2 INCH. THE OTHER | | UNIT (#0VC13CB) WAS FOUND TO HAVE A SIMILAR PIECE OF WOOD; HOWEVER, THE | | BOLTS WERE UNABLE TO BE EXAMINED. IDENTICAL PIECES OF WOOD WERE ALSO FOUND | | ON THE DEHYDRATORS FOR THE STATION DRYWELL CHILLERS #1VP04CA AND #1VP04CB. | | | | THIS CONDITION FOR THE CONTROL ROOM VENTILATION CHILLERS IS APPLICABLE TO | | 10CFR50.72(b)(2)(i). THIS IS DUE TO THE PRESENCE OF 'WOOD' SUPPORTING | | COMPONENTS ON THESE CHILLERS NOT BEING SEISMICALLY QUALIFIED. THIS WOULD | | REQUIRE THE UNIT TO BE SHUT DOWN IF IT WERE OPERATING PER CLINTON POWER | | STATION'S IMPROVED TECHNICAL SPECIFICATION 3.7.4, 'CONTROL ROOM AIR | | CONDITIONING SYSTEM.'" | | | | THE LICENSEE WILL INFORM THE NRC RESIDENT INSPECTOR. | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 33004 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: RIVER BEND REGION: 4 |NOTIFICATION DATE: 09/28/97 | |UNIT: [1] [ ] [ ] STATE: LA |NOTIFICATION TIME: 14:03 [ET]| |RX TYPE: [1] GE-6 |EVENT DATE: 09/28/97 | +------------------------------------------------+EVENT TIME: 10:00[CDT]| |NRC NOTIFIED BY: JOEY CLARK |LAST UPDATE DATE: 09/28/97 | |HQ OPS OFFICER: FANGIE JONES +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |ELMO COLLINS 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 N 0 REFUELING | 0 REFUELING | | | | | | | | | +-----+---------------------------------------------+--------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | - EDGs HAVE CRACKED CYLINDER VALVE ADJUSTING SCREW ASSEMBLY SWIVEL PADS - | | | | DURING AN INSPECTION OF THE DIVISION I EDG ON 09/15/97 WHILE THE PLANT WAS | | SHUTDOWN IN A REFUELING OUTAGE, THE #5 EXHAUST CYLINDER VALVE ADJUSTING | | SCREW ASSEMBLY SWIVEL PAD (VASASP) WAS FOUND TO BE CRACKED. ALL OTHER | | VASASPs WERE INSPECTED AND THE EDG MAINTENANCE ACTIVITIES WERE CONTINUED. | | | | FOLLOWING A POST-MAINTENANCE RUN OF THE DIVISION I EDG ON 09/26/97, | | THE DIVISION I EDG VASASPs WERE INSPECTED AGAIN AND VALVES FOR CYLINDER | | #7 INTAKE AND #8 EXHAUST WERE FOUND TO HAVE CRACKED VASASPs. | | | | RECORDS INDICATED THAT VASASPs INSTALLED IN DIVISION I AND II EDGs WERE | | FROM THE SAME LOT. THE VENDOR DETERMINED THAT THIS LOT OF VASASPs WAS | | MANUFACTURED WITH MATERIAL OF INCORRECT HARDNESS. BASED ON THIS FINDING, | | BOTH EDGs WERE DECLARED INOPERABLE ON 09/26/97 UNTIL INSPECTIONS/REPAIRS | | COULD BE COMPLETED. | | | | THE DIVISION II EDG REMAINED AVAILABLE FOR EMERGENCY USE UNTIL INSPECTIONS/ | | REPAIRS OF THE DIVISION I EDG COULD BE COMPLETED. ALL VASASPs ON THE | | DIVISION I EDG WERE REPLACED WITH VASASPs MANUFACTURED WITH THE CORRECT | | MATERIAL HARDNESS. THE DIVISION I EDG WAS TESTED AND RETURNED TO OPERABLE | | STATUS AT 1544 CDT ON 09/27/97. | | | | WHEN THE DIVISION II EDG WAS INSPECTED ON 09/28/97, THE VALVES FOR CYLINDER | | #4 INTAKE, #1 EXHAUST, #2 EXHAUST, #5 EXHAUST, AND #8 EXHAUST WERE FOUND TO | | HAVE CRACKED VASASPs. THE LICENSEE PLANS TO REPLACE ALL DIVISION II EDG | | VASASPs. | | | | LICENSEE ENGINEERING EVALUATION DETERMINED THAT ALTHOUGH THE EDGs WERE ABLE | | TO START AND RUN WITH THE ABOVE INSTALLED DEGRADED VASASPs, THE EDGs MAY | | NOT HAVE BEEN ABLE TO RUN FOR THE 30 DAYS REQUIRED TO SUPPORT THE SAFETY | | FUNCTION. | | | | THIS EVENT IS BEING REPORTED AS AN EVENT OR CONDITION THAT ALONE COULD HAVE | | PREVENTED THE FULFILLMENT OF THE SAFETY FUNCTION OF STRUCTURES OR SYSTEMS. | | | | THE LICENSEE INFORMED THE NRC RESIDENT INSPECTOR. | +------------------------------------------------------------------------------+