U.S. Nuclear Regulatory Commission Operations Center Event Reports For 08/16/95 - 08/17/95 ** EVENT NUMBERS ** 29199 29204 29205 29206 +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 29199 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: BRUNSWICK REGION: 2 |NOTIFICATION DATE: 08/15/95 | |UNIT: [1] [2] [ ] STATE: NC |NOTIFICATION TIME: 11:56 [ET]| |RX TYPE: [1] GE-4,[2] GE-4 |EVENT DATE: 08/15/95 | +------------------------------------------------+EVENT TIME: 11:34[EDT]| |NRC NOTIFIED BY: ROUSE |LAST UPDATE DATE: 08/16/95 | |HQ OPS OFFICER: TIM McGINTY +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: UNUSUAL EVENT +-----------------------------+ |10 CFR SECTION: |JEROME BLAKE RDO | |AAEC 50.72(a)(1)(i) EMERGENCY DECLARED |DENNIG EO | |APRE 50.72(b)(2)(vi) OFFSITE NOTIFICATION |STEINDRUFF FEMA | | |COMM ASST BRIEF | | | | | | | +-----+----------+-------+--------+--------------+--+--------+-----------------+ |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 25 POWER OPERATION | 25 POWER OPERATION | | | | | +-----+---------------------------------------------+--------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | UNUSUAL EVENT DECLARED DUE TO A POSTED HURRICANE WARNING. | | | | BRUNSWICK UNITS 1 AND 2 DECLARED AN UNUSUAL EVENT AT 11:34 EDT DUE TO A | | HURRICANE WARNING BEING POSTED IN RESPONSE TO HURRICANE FELIX. BOTH UNITS | | ARE CURRENTLY STABLE WITH OFFSITE POWER AVAILABLE. THE EDGs, ECCSs, AND | | RCIC ARE OPERABLE AT BOTH UNITS. UNIT 2 IS AT A REDUCED POWER OF | | APPROXIMATELY 25% DUE TO A CONDENSER TUBE LEAK IN THE 'B' NORTH WATER BOX. | | UNIT 2 IN HOUSE LOADS HAVE BEEN TRANSFERRED TO THE STARTUP AUXILIARY | | TRANSFORMER. THE LICENSEE HAS IMPLEMENTED PROCEDURE AI-68, BRUNSWICK | | NUCLEAR PLANT RESPONSE TO SEVERE WEATHER WARNINGS. | | | | THE LICENSEE HAS NOTIFIED THE STATE AND LOCAL AUTHORITIES AND THE NRC | | RESIDENT INSPECTOR. | | | | * * * 15:28 AUGUST 15, 1995, UPDATE FROM REINSBURROW TAKEN BY TROCINE * * * | | | | THE LICENSEE SPECIFIED THAT A NOTIFICATION OF OFFSITE AGENCIES WAS MADE DUE | | TO THE DECLARATION OF THE UNUSUAL EVENT FOR HURRICANE FELIX. | | | | THE LICENSEE NOTIFIED THE STATE OF NORTH CAROLINA, BRUNSWICK COUNTY, AND | | NEW HANOVER COUNTY. THE NRC OPERATIONS CENTER NOTIFIED THE R2DO | | (CHRISTENSEN). | | | | * * * 11:43 ON AUGUST 16, 1995, UPDATE FROM O'QUINN TAKEN BY JOLLIFFE * * * | | | | AT 11:18 ON AUGUST 16, 1995, UNIT 1 WAS OPERATING AT 75% POWER DECREASING | | TO 60% POWER, AND UNIT 2 WAS OPERATING AT 25% POWER. THE HURRICANE WARNING | | FOR THE BRUNSWICK AREA WAS DOWNGRADED TO A HURRICANE WATCH. THE WIND WAS | | BLOWING AT 11.6 MILES PER HOUR FROM 351 DEGREES AT THE SITE WITH A | | STABILITY CLASS OF 'A'. | | | | THE LICENSEE WILL INFORM THE NRC RESIDENT INSPECTOR. THE NRC OPERATIONS | | CENTER NOTIFIED THE R2DO (CHRISTENSEN). | | | | * * * 12:36 AUGUST 16, 1995, UPDATE FROM O'QUINN TAKEN BY TROCINE * * * | | | | THE LICENSEE TERMINATED THE UNUSUAL EVENT AT 12:33 ON AUGUST 16, 1995, | | BECAUSE THE SITE IS NO LONGER UNDER A HURRICANE WARNING. PLANT CONDITIONS | | ARE STABLE WITH UNITS 1 AND 2 AT 59% AND 25% REACTOR POWER, RESPECTIVELY. | | THERE ARE NO RECOMMENDED PROTECTIVE ACTIONS AT THIS TIME. | | | | THE LICENSEE WILL INFORM THE NRC RESIDENT INSPECTOR. THE NRC OPERATIONS | | CENTER INFORMED THE R2DO (CHRISTENSEN), THE NRR EO (GOODWIN), AND FEMA | | (SHULL). | | | | * * * 16:30 AUGUST 16, 1995, UPDATE BY TROCINE * * * | | | | A COMMISSIONERS ASSISTANTS' BRIEFING WAS CONDUCTED AT 16:30 ON AUGUST 16, | | 1995, IN ORDER TO DISCUSS THE RAMIFICATIONS OF HURRICANE FELIX. THE | | FOLLOWING NOTIFICATIONS WERE MADE (*INDICATES OFFICE DID NOT PARTICIPATE): | | AEOD (H. BAILEY, R. BARRETT, R. HASSELBERG, J. JOLICOEUR, AND E. JORDAN); | | COMM. JACKSON (J. JOHNSON); COMM. ROGERS (J. SORENSEN); EDO - REACTORS (C. | | CARPENTER); EDO - MATERIALS, FUEL, SAFEGUARDS (*K. STABLEIN); REGION 1 (J. | | JOYNER AND P. KAUFMAN); REGION 2 (J. BARTLEY, M. BRANCH, C. CASTO, K. | | LANDIS, C. PATTERSON, J. STAREFOS, AND R. TROJANOWSKI); NRR EO (A. | | CHAFFEE); NMSS EO (D. COOL); R1DO (*J. ROGGE); R2DO (*C. CHRISTENSEN); PAO | | (J. GILLILAND); CAO (T. COMBS); SECY (A. BATES); STATE (*P. LOHAUS); IP (H. | | FAULKNER); NRR (B. BUCKLEY, E. GOODWIN, AND W. MAIER); AND NMSS (F. COMBS | | AND E. FLACK). | | | | THE FORWARD MOVEMENT OF HURRICANE FELIX HAS SLOWED SIGNIFICANTLY. THE | | STORM IS CURRENTLY MOVING WEST-NORTHWEST AT APPROXIMATELY 4 MILES PER HOUR | | AND IS LOCATED APPROXIMATELY 150 MILES EAST-SOUTHEAST OF CAPE HATTERAS, | | NORTH CAROLINA. (THIS STORM LOCATION IS APPROXIMATELY 300 MILES FROM THE | | BRUNSWICK FACILITY AND APPROXIMATELY 250 MILES FROM THE SURRY FACILITY.) | | HURRICANE FORCE WINDS EXTEND OUT APPROXIMATELY 110 MILES FROM THE CENTER OF | | THE STORM. THE EARLIEST PROJECTED LANDFALL IS ESTIMATED TO BE LATE TONIGHT | | OR EARLY TOMORROW MORNING. THE STORM IS CURRENTLY LOCATED OVER 80øF WATER | | AND IS EXPECTED TO MOVE OVER THE GULF STREAM (WHICH HAS A WATER TEMPERATURE | | OF 86øF) LATER TODAY. THE WARMER WATER TEMPERATURE COULD CAUSE THE FORWARD | | MOTION OF THE STORM TO SLOW DOWN AND COULD CAUSE THE STORM TO STRENGTHEN IN | | FORCE. MAXIMUM SUSTAINED WINDS ARE APPROXIMATELY 80 MILES PER HOUR WITH | | GUSTS UP TO 100 MILES PER HOUR. | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 29204 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: MCGUIRE REGION: 2 |NOTIFICATION DATE: 08/16/95 | |UNIT: [ ] [2] [ ] STATE: NC |NOTIFICATION TIME: 10:05 [ET]| |RX TYPE: [1] W-4-LP,[2] W-4-LP |EVENT DATE: 08/16/95 | +------------------------------------------------+EVENT TIME: 09:11[EDT]| |NRC NOTIFIED BY: AL YODER |LAST UPDATE DATE: 08/16/95 | |HQ OPS OFFICER: DOUG WEAVER +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |CHRIS CHRISTENSEN RDO | |ADEG 50.72(b)(1)(ii) DEGRAD COND DURING OP | | | | | | | | | | | | | | +-----+----------+-------+--------+--------------+--+--------+-----------------+ |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 +------------------------------------------------------------------------------+ | BOTH CONTAINMENT AIRLOCK DOORS WERE OPEN FOR ABOUT TWO MINUTES | | | | WORKERS ENTERED THE UPPER CONTAINMENT AIRLOCK FROM THE REACTOR SIDE AND | | SHUT THE DOOR BEHIND THEM. WHEN THEY OPENED THE AUXILIARY BUILDING SIDE | | DOOR, THE DOOR SEAL DEFLATED, BUT THE DOOR COULD NOT BE FULLY OPENED DUE TO | | THE FAILURE OF A PIN WHICH HOLDS THE DOOR SHUT. THE WORKERS THEN OPENED | | THE REACTOR SIDE DOOR LEAVING BOTH DOORS OPEN SIMULTANEOUSLY. THE AIRLOCK | | WAS IN THIS CONDITION FOR ABOUT TWO MINUTES. | | | | THE LICENSEE IS INVESTIGATING THE FOLLOWING ITEMS WITH RESPECT TO THIS | | EVENT: (1) WHY THE WORKERS OPENED THE REACTOR SIDE DOOR WITH THE AUX BLDG | | SIDE DOOR OPEN, (2) WHY THE PIN FAILED TO OPEN, AND (3) THE APPARENT | | FAILURE OF AN INTERLOCK WHICH SHOULD HAVE PREVENTED BOTH DOORS FROM BEING | | OPEN AT THE SAME TIME. | | | | THE LICENSEE INFORMED THE NRC RESIDENT INSPECTOR. | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 29205 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: CALLAWAY REGION: 3 |NOTIFICATION DATE: 08/16/95 | |UNIT: [1] [ ] [ ] STATE: MO |NOTIFICATION TIME: 14:28 [ET]| |RX TYPE: [1] W-4-LP |EVENT DATE: 08/16/95 | +------------------------------------------------+EVENT TIME: 09:44[CDT]| |NRC NOTIFIED BY: BRUCE SCHOENBACH |LAST UPDATE DATE: 08/16/95 | |HQ OPS OFFICER: LEIGH TROCINE +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |GEOFFREY WRIGHT 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 99 POWER OPERATION | 0 HOT STANDBY | | | | | | | | | +-----+---------------------------------------------+--------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | TURBINE TRIP/REACTOR TRIP CAUSED BY A LOSS OF TURBINE CONDENSER VACUUM. | | | | A LOSS OF CONDENSER VACUUM CAUSED A TURBINE TRIP AND AUTOMATIC REACTOR TRIP | | FROM 99% POWER. ALL RODS FULLY INSERTED, AND ALL SYSTEMS FUNCTIONED | | NORMALLY ON THE TRIP. THE STEAM DUMPS TO THE CONDENSER ACTUATED, AND ALL | | AUXILIARY FEEDWATER PUMPS STARTED AS EXPECTED. NO PORVs OPENED. CHARGING | | IS BEING USED FOR PRIMARY INVENTORY CONTROL. ALL EMERGENCY DIESEL | | GENERATORS ARE CURRENTLY OPERABLE AND AVAILABLE. THE 'B' CENTRIFUGAL | | CHARGING PUMP WHICH IS USED FOR HIGH PRESSURE INJECTION WAS OUT OF SERVICE | | FOR ROUTINE MAINTENANCE AT THE TIME OF THE REACTOR TRIP. THE CAUSE OF THE | | LOSS OF CONDENSER VACUUM IS UNDER INVESTIGATION AT THIS TIME. | | | | THE LICENSEE NOTIFIED THE NRC RESIDENT INSPECTOR. | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 29206 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: LASALLE REGION: 3 |NOTIFICATION DATE: 08/16/95 | |UNIT: [1] [ ] [ ] STATE: IL |NOTIFICATION TIME: 23:44 [ET]| |RX TYPE: [1] GE-5,[2] GE-5 |EVENT DATE: 08/16/95 | +------------------------------------------------+EVENT TIME: 20:06[CDT]| |NRC NOTIFIED BY: KEVIN DORWICK |LAST UPDATE DATE: 08/16/95 | |HQ OPS OFFICER: DOUG WEAVER +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |GEOFFREY WRIGHT 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 | A/R Y 100 POWER OPERATION | 0 HOT SHUTDOWN | | | | | | | | | +-----+---------------------------------------------+--------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | -REACTOR SCRAM CAUSED BY MSIV CLOSURE- | | | | THE 1B RPS ELECTRICAL POWER MONITORING ASSEMBLY (EMPA 1C71-S003D) TRIPPED | | AT 2006 RESULTING IN NUMEROUS PRIMARY CONTAINMENT ISOLATIONS. BOTH UNIT'S | | REACTOR BUILDING VENTILATION (VR) DAMPERS ISOLATED ON THE LOSS OF THE RPS | | BUS. A HALF SCRAM SIGNAL WAS ALSO GENERATED. | | | | THE PLANT ENTERED PROCEDURE LOA-VR-01 ON BOTH UNITS TO INSTALL JUMPERS IN | | THE MSIV STEAM TUNNEL HIGH TEMPERATURE AND DIFFERENTIAL TEMPERATURE | | ISOLATION CIRCUITS TO PREVENT A GROUP I (MSIV) ISOLATION DUE TO LOSS OF | | VENTILATION. VENTILATION WAS RESTARTED ON UNIT 2 WITH NO PROBLEMS AND THE | | JUMPERS WERE REMOVED WITHIN THE ALLOWED ONE HOUR TIME LIMIT. | | | | AT 2013 A GROUP I ISOLATION OCCURRED ON UNIT 1 DUE TO HIGH STEAM TUNNEL | | TEMPERATURE. THIS ISOLATION OCCURRED EVEN WITH THE LOA-VR-01 JUMPERS | | INSTALLED. FOLLOWING THE CLOSURE OF THE MSIVs A FULL REACTOR SCRAM | | OCCURRED AND ALL RODS FULLY INSERTED. FOUR SAFETY RELIEF VALVES (SRVs) | | OPENED IN THE RELIEF MODE AS A RESULT OF THE MSIV CLOSURE. PRESSURE IS | | BEING MAINTAINED AT THE LOW LOW SET VALUE AS DECAY HEAT IS BEING REMOVED | | VIA THE SRVs TO THE SUPPRESSION POOL. THE LOWEST REACTOR WATER LEVEL | | OBSERVED WAS -30". NO COOLING SYSTEMS INITIATED AND REACTOR WATER | | INVENTORY IS BEING MAINTAINED BY THE FEED SYSTEM. | | | | FOLLOWING THE SRV ACTUATION AND SUBSEQUENT CLOSURE AT 2103 ANOTHER REACTOR | | SCRAM OCCURRED ON LOW REACTOR WATER LEVEL. THIS SCRAM WAS CAUSED BY LEVEL | | SHRINKAGE FROM THE SRV CLOSURE. | | | | THE FOLLOWING ADDITIONAL ANOMALIES OCCURRED DURING THIS EVENT. 1) THE "A" | | SRM FAILED DOWNSCALE AFTER THE SCRAM. THE "B" SRM WAS INOPERABLE PRIOR TO | | THE EVENT. 2) THE "A","C","D" AND "E" IRMs WERE ALSO INOPERABLE PRIOR TO | | THE EVENT AND NOT REQUIRED IN THE RUN MODE. AFTER THE SCRAM AN | | INSUFFICIENT NUMBER OF IRMs WERE OPERABLE IN THE "A" REACTOR PROTECTION | | SYSTEM AND THE "A" RPS SCRAM CHANNEL WAS PLACED IN THE TRIPPED CONDITION | | IAW TECH SPECS. | | 3) A RELAY ON THE REACTOR PROTECTION SYSTEM / PRIMARY CONTAINMENT SYSTEM | | ISOLATION PANEL WAS MAKING A VERY LOUD NOISE DURING THE EVENT. | | | | THE LICENSEE IS INVESTIGATING THE LOSS OF THE RPS POWER SUPPLY AND WHY THE | | GROUP I ISOLATION WAS RECEIVED EVEN THOUGH THE JUMPERS WERE INSTALLED. | | | | THE LICENSEE WILL INFORM THE NRC RESIDENT INSPECTOR. | +------------------------------------------------------------------------------+