U.S. Nuclear Regulatory Commission Operations Center Event Reports For 02/13/95 - 02/14/95 ** EVENT NUMBERS ** 28304 28375 28376 28377 28378 28379 28380 28381 +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 28304 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: NINE MILE POINT REGION: 1 |NOTIFICATION DATE: 01/29/95 | |UNIT: [ ] [2] [ ] STATE: NY |NOTIFICATION TIME: 12:28 [ET]| |RX TYPE: [1] GE-2,[2] GE-5 |EVENT DATE: 01/29/95 | +------------------------------------------------+EVENT TIME: 12:28[EST]| |NRC NOTIFIED BY: LYNCH |LAST UPDATE DATE: 02/13/95 | |HQ OPS OFFICER: TIM McGINTY +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: UNUSUAL EVENT +-----------------------------+ |10 CFR SECTION: |FRANK COSTELLO RDO | |AAEC 50.72(a)(1)(i) EMERGENCY DECLARED |BRIAN SHERON EO | |ASHU 50.72(b)(1)(i)(A) PLANT S/D REQD BY TS |CALDWELL FEMA | | |ED JORDAN AEOD | | |KEN BROCKMAN AEOD | | |TIM MARTIN RA | +-----+----------+-------+--------+--------------+--+--------+-----------------+ |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 +------------------------------------------------------------------------------+ | UNUSUAL EVENT DECLARED WHEN BOTH THE DIV 1 AND DIV 2 EDG's WERE DECLARED | | INOPERABLE. | | | | NINE MILE POINT UNIT 2 COMMENCED AN ORDERLY PLANT SHUTDOWN AS REQUIRED BY | | TECH SPEC 3.8.1.1, ACTION STATEMENT (b), BECAUSE THE DIVISION 1 EDG IS | | INOPERABLE AND WAS NOT ABLE TO BE RESTORED TO OPERABLE WITHIN 72 HOURS OF | | DISCOVERY OF THE INOPERABILITY. THE PROBLEM WITH THE COOPER-BESSEMER | | "KSV-16T" MODEL EDG IS THE MECHANICAL GOVERNOR IS UNDERGOING CORRECTIVE | | MAINTENANCE DUE TO GOVERNOR OVERHEATING AND ENGINE CONTROL PROBLEMS. | | ACTIVITIES CONTINUE TO ATTEMPT TO RESTORE THE EDG TO AN OPERABLE STATUS. | | THE ORIGINAL PROBLEM ON THE DIV 1 EDG WAS DISCOVERED DURING NORMAL | | SURVEILLANCE TESTING. | | | | THIS MORNING, THE LICENSEE STARTED THE DIV 2 EDG (IDENTICAL DESIGN) TO HELP | | ASCERTAIN THE PROBLEM FOR INFORMATIONAL PURPOSES. AT 1241 EST, THE EVENT | | WAS UPGRADED TO AN UNUSUAL EVENT WHEN THE DIV 2 EDG WAS ALSO DECLARED | | INOPERABLE WHEN IT FAILED TO RESPOND TO A NORMAL TRIP SIGNAL AS EXPECTED AT | | THE COMPLETION OF THE INFORMATIONAL RUN. THE DIV 2 DIESEL WAS SUCCESSFULLY | | TRIPPED AFTER OPERATORS EXECUTED "ABNORMAL" SWITCH MANIPULATIONS (AN | | OPERATOR WAS ALSO DISPATCHED TO TRIP THE FUEL RACKS, IT IS UNCLEAR WHICH | | ACTION RESULTED IN THE SUCCESSFUL TRIP OF THE DIV 2 EDG). THE CALLER ALSO | | STATED THAT, DUE TO THE IDENTICAL DESIGNS OF THE EDG's, THE DIV 2 EDG COULD | | POTENTIALLY BE SUSCEPTIBLE TO SIMILAR PROBLEMS THAT THE DIV 1 EDG WAS | | EXPERIENCING, HOWEVER THIS MORNINGS TEST RUN DID NOT INDICATE ANY SUCH | | PROBLEMS. THE DIV 2 EDG IS TECHNICALLY INOPERABLE, BUT IS CONSIDERED | | AVAILABLE, AND EFFORTS ARE UNDERWAY TO RESTORE IT TO AN OPERABLE STATUS. | | | | UPON DECLARING THE UNUSUAL EVENT, TECH SPEC ACTION STATEMENT 3.8.1.1(g) WAS | | ENTERED, WHICH SPECIFIES RETURNING ONE EDG TO OPERABLE STATUS WITHIN TWO | | HOURS OR TO BE IN HOT SHUTDOWN WITHIN THE FOLLOWING 12 HOURS, AND COLD | | SHUTDOWN WITHIN THE FOLLOWING 24 HOURS. | | | | NMP-2 HAS THREE EDG's, HOWEVER THE DIV 3 EDG IS DEDICATED TO HPCS AND IS | | OPERABLE. ALL ECCS SYSTEMS ARE OPERABLE AT THIS TIME. THE TWO 115 KV | | OFF-SITE FEEDS TO THE STATION ARE OPERABLE, AND THE LOAD DISPATCHER HAS | | INDICATED THAT THE GRID IS STABLE, AND THE WEATHER FORECAST DOES NOT | | INDICATE ANY POTENTIAL PROBLEMS WITH GRID STABILITY. | | | | THE UNIT SHOULD BE IN HOT SHUTDOWN IN ABOUT 7.5 HOURS. THE RESIDENT | | INSPECTOR IS IN THE CONTROL ROOM OBSERVING THE SHUTDOWN. THE LICENSEE | | INFORMED THE STATE AND LOCAL AUTHORITIES ABOUT THE UNUSUAL EVENT, AND WILL | | ISSUE A PRESS RELEASE. | | | | ***UPDATE AT 12:18 ON 01/30/95 BY WEAVER TO GOULD*** | | | | THE NOUE WAS TERMINATED AT 12:11 WHEN THE UNIT WAS PUT IN COLD S/D. BOTH | | DIV 1 & 2 D/G'S ARE AVAILABLE. THE RI WILL BE NOTIFIED AND STATE AND LOCAL | | AGENCIES WERE NOTIFIED. FEMA(CALDWELL), RI(COSTELLO), EO(DENNIG) HAVE BEEN | | NOTIFIED. | | | | ***UPDATE AT 12:23 ON 2/13/95 FROM ERON TAKEN BY SEBROSKY *** | | | | FURTHER INVESTIGATION OF THE GOVERNOR FAILURE REVEALED THAT THE GOVERNOR | | TEMPERATURES WOULD NOT ALLOW THE DIESEL GENERATORS TO MAINTAIN REQUIRED | | LOADS FOR EXTENDED PERIODS OF TIME. THE DIESEL GENERATOR GOVERNOR | | TEMPERATURES EXCEEDED VENDOR SPECIFICATIONS. THE CAUSE WAS A DESIGN | | DEFICIENCY IN THE COOLING WATER SUPPLY PIPING TO THE GOVERNOR COOLER. | | THESE COMPONENTS ARE VENDOR SUPPLIED. THE DESIGN WAS MODIFIED AND THE | | CONDITION WAS CORRECTED DURING THE LAST NINE MILE POINT 2 FORCED OUTAGE. | | BOTH DIESEL GENERATORS ARE OPERABLE AND THIS REPORT IS THE RESULT OF AN | | ONGOING INVESTIGATION. THE LICENSEE IS CONTINUING TO INVESTIGATE THE | | PROBLEM, AND WHETHER OR NOT A PART 21 REPORT WILL BE MADE. | | | | THE LICENSEE HAS INFORMED THE RESIDENT INSPECTOR. HOO NOTIFIED R1DO | | (BORES). | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 28375 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: SALEM REGION: 1 |NOTIFICATION DATE: 02/13/95 | |UNIT: [ ] [2] [ ] STATE: NJ |NOTIFICATION TIME: 02:20 [ET]| |RX TYPE: [1] W-4-LP,[2] W-4-LP |EVENT DATE: 02/12/95 | +------------------------------------------------+EVENT TIME: 01:36[EST]| |NRC NOTIFIED BY: KAFANTARIS |LAST UPDATE DATE: 02/13/95 | |HQ OPS OFFICER: DICK JOLLIFFE +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |RICHARD KEIMIG 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 4 STARTUP | 2 STARTUP | | | | | +-----+---------------------------------------------+--------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | - MANUAL MAIN STEAM SYSTEM ISOLATION TO STOP RCS TEMPERATURE DECREASE - | | | | ON 02/12/95, UNIT 2 WAS AT 4% POWER WITH 1 OF 4 ATMOSPHERIC RELIEF VALVES | | (22MS-10) CLOSED AND DEENERGIZED FOR MAINTENANCE ACTIVITIES. PRESSURE IN | | #22 STEAM GENERATOR INCREASED FROM A NORMAL OF 1005 PSIG TO 1020 PSIG. | | CONTROL ROOM OPERATORS REDUCED POWER TO 2% TO REDUCE PRESSURE SO AS NOT TO | | CHALLENGE A SECONDARY SIDE SAFETY VALVE. DURING THE POWER REDUCTION, THE | | Rx COOLANT SYSTEM TEMPERATURE DECREASED FROM A NORMAL OF 547 DEGREES F TO | | APPROXIMATELY 540.5 DEGREES F AS AUX FEEDWATER WAS BEING INJECTED INTO THE | | STEAM GENERATORS. AT 0136, CONTROL ROOM OPERATORS STOPPED THE AUX | | FEEDWATER INJECTION AND MANUALLY CLOSED THE MAIN STEAM LINE WARMUP VALVE | | (MS-18) AND THE MAIN STEAM LINE DRAIN VALVE (MS-7) (ESF ACTUATION) TO | | STOP DUMPING STEAM TO THE MAIN CONDENSER TO STOP THE TEMPERATURE DECREASE. | | UNIT 2 WAS STABILIZED AT 2% POWER AT NORMAL PRESSURE AND TEMPERATURE. | | | | LICENSEE IS INVESTIGATING THE CAUSE OF THIS EVENT. | | | | AT 0030 ON 02/13/95, LICENSEE DETERMINED THIS EVENT TO BE REPORTABLE TO THE | | NRC AS A MANUAL ESF ACTUATION. | | | | LICENSEE WILL INFORM THE NRC RESIDENT INSPECTOR. | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 28376 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: ROBINSON REGION: 2 |NOTIFICATION DATE: 02/13/95 | |UNIT: [2] [ ] [ ] STATE: SC |NOTIFICATION TIME: 11:34 [ET]| |RX TYPE: [2] W-3-LP |EVENT DATE: 02/13/95 | +------------------------------------------------+EVENT TIME: 11:12[EST]| |NRC NOTIFIED BY: DAVID BAUR |LAST UPDATE DATE: 02/13/95 | |HQ OPS OFFICER: JOSEPH SEBROSKY +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: ALERT +-----------------------------+ |10 CFR SECTION: |FLOYD CANTRELL RDO | |AAEC 50.72(a)(1)(i) EMERGENCY DECLARED |AL CHAFFEE EO | | |JORDAN AEOD | | |BROCKMAN AEOD | | |COOPER USDA | | |MOORE DOE | +-----+----------+-------+--------+--------------+--+--------+-----------------+ |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 +------------------------------------------------------------------------------+ | AN ALERT WAS DECLARED DUE TO A RELEASE OF TOXIC GAS INTO A VITAL AREA. THE | | ALERT WAS TERMINATED AT 11:34. | | | | THE ALERT WAS DECLARED WHEN ONE BOTTLE OF CARBON DIOXIDE WAS RELEASED TO A | | VITAL AREA DURING SURVEILLANCE TESTING. THE CARBON DIOXIDE IS USED FOR A | | FIRE SUPPRESSION SYSTEM FOR A CABLE VAULT. THE CARBON DIOXIDE BOTTLES ARE | | PHYSICALLY LOCATED IN A DIFFERENT ROOM, THE AUXILIARY BUILDING PIPING | | PENETRATION ROOM. THE SURVEILLANCE TEST CONSISTS OF DISCONNECTING THE | | BOTTLES, WEIGHING THEM, AND THEN RECONNECTING THEM. DURING THIS PROCEDURE | | ONE OF THE BOTTLES WAS DISCHARGED. THE AREA WAS EVACUATED. THE ALERT WAS | | TERMINATED WHEN THE AREA WAS REENTERED BY PERSONNEL IN SELF CONTAINED | | BREATHING APPARATUS AND VERIFIED TO HAVE AN OXYGEN CONTENT GREATER THAN | | 20%. THE LICENSEE IS NOT IN A TECHNICAL SPECIFICATION ACTION STATEMENT | | BECAUSE OF THE PROBLEM. | | | | THERE WERE NO INJURIES AND THE LICENSEE IS CONTINUING TO INVESTIGATE THE | | PROBLEM. THE LICENSEE HAS INFORMED THE NRC RESIDENT INSPECTOR AND STATE | | AND LOCAL OFFICIALS IN ACCORDANCE WITH THEIR EMERGENCY PLAN. | | | | IN ADDITION TO THE ABOVE NOTIFICATIONS, HOO ALSO NOTIFIED HHS (BURGER), | | FEMA (BELCHER), DOT (BROCKWAY), AND PA (GAGNER). | | | | *** UPDATE @ 12:47 ON 2/13/95 FROM BAUR TAKEN BY SEBROSKY *** | | | | THE LICENSEE NOW BELIEVES THAT MORE THAN ONE BOTTLE IS DISCHARGING CARBON | | DIOXIDE. THERE ARE SEVEN BOTTLES IN THE BANK. ONE OF THE BOTTLES DOES NOT | | HAVE IT'S THREADS ALL THE WAY ENGAGED TO THE BOTTLE, AND IT WAS ONLY THIS | | BOTTLE THAT THE LICENSEE BELIEVED WAS DISCHARGING. THE LICENSEE NOW | | BELIEVES THAT ALL THE BOTTLES IN THE BANK MAY BE DISCHARGING. THERE IS NO | | WAY TO ISOLATE THE LEAK IN THE PRESENT CONDITION. THE LICENSEE IS | | CONTINUING TO PERFORM OXYGEN MONITORING THROUGHOUT THE AUXILIARY BUILDING | | ESPECIALLY IN THE LOW LYING AREAS. ALL AREAS SHOW OXYGEN CONCENTRATIONS | | ARE GREATER THAN 20% AND ALL AREAS REMAIN ACCESSIBLE TO PLANT PERSONNEL. | | THE LICENSEE IS NOT CURRENTLY IN AN EMERGENCY CLASSIFICATION BECAUSE OF THE | | PROBLEM. | | | | THE BANK THAT IS INVOLVED IS THE BACKUP BANK FOR FIRE PROTECTION. THE | | PRIMARY BANK REMAINS AVAILABLE FOR FIRE PROTECTION. THE LICENSEE IS | | CONTINUING TO INVESTIGATE THE PROBLEM. THE LICENSEE HAS INFORMED THE | | RESIDENT INSPECTOR. HOO NOTIFIED R2DO (CANTRELL) AND EO (CHAFFEE). | | | | NOTES: | | 1. LICENSEE ISSUED A PRESS RELEASE ON THIS EVENT. SEE EVENT #28378. | | 2. SEE EVENT #24338 ON 09/30/92 FOR A SIMILAR ALERT EVENT. | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 28377 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: VERMONT YANKEE REGION: 1 |NOTIFICATION DATE: 02/13/95 | |UNIT: [1] [ ] [ ] STATE: VT |NOTIFICATION TIME: 12:57 [ET]| |RX TYPE: [1] GE-4 |EVENT DATE: 02/13/95 | +------------------------------------------------+EVENT TIME: 12:49[EST]| |NRC NOTIFIED BY: CROKE |LAST UPDATE DATE: 02/13/95 | |HQ OPS OFFICER: CHAUNCEY GOULD +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |BOB BORES RDO | |ASHU 50.72(b)(1)(i)(A) PLANT S/D REQD BY TS | | |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 +------------------------------------------------------------------------------+ | THE LICENSEE REMOVED THE "RRU-7" CORNER ROOM COOLING UNIT FROM SERVICE FOR | | PLANNED MAINTENANCE. | | | | WITH THE "RRU-7" UNIT OUT OF SERVICE, THEIR ANALYSIS STATES THAT THEY HAVE | | TO DECLARE THE "A" CORE SPRAY SUBSYSTEM INOPERABLE ALONG WITH THE "A" | | CONTAINMENT COOLING SUBSYSTEM AND THE "A" RHR SERVICE WATER SUBSYSTEM. | | BEING IN THIS CONDITION, DOES NOT MEET TECH SPEC REQUIREMENTS FOR | | OPERABILITY, BUT THE SYSTEM IS OPERABLE. THEIR MOST LIMITING LCO REQUIRES | | THAT BOTH CORE SPRAY SYSTEMS BE OPERABLE WITH THE "A" RHR SERVICE WATER | | SUBSYSTEM OUT OF SERVICE. SINCE THE "A" CORE SPRAY SYSTEM IS NOT OPERABLE, | | THEY HAVE TO BE IN COLD S/D IN 24 HRS. THEY EXPECT TO HAVE THE SYSTEM BACK | | IN SERVICE WITHIN 2-3 HRS AND THEY DO NOT EXPECT TO COMMENCE REDUCING POWER | | OR DECLARING AN UNUSUAL EVENT. THE RI AND STATE WILL BE INFORMED. | | | | *** UPDATE @ 16:10 ON 2/13/95 FROM HALLONQUIST TAKEN BY SEBROSKY *** | | | | THE LICENSEE EXITED THE TECH SPEC REQUIRED SHUTDOWN AT 15:45 WHEN THE RRU-7 | | WAS DECLARED OPERABLE. THE LICENSEE DID NOT REDUCE POWER DUE TO THE | | PROBLEM. | | | | THE LICENSEE WILL INFORM THE NRC RESIDENT INSPECTOR. HOO NOTIFIED R1DO | | (BORES). | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 28378 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: ROBINSON REGION: 2 |NOTIFICATION DATE: 02/13/95 | |UNIT: [2] [ ] [ ] STATE: SC |NOTIFICATION TIME: 17:07 [ET]| |RX TYPE: [2] W-3-LP |EVENT DATE: 02/13/95 | +------------------------------------------------+EVENT TIME: 16:10[EST]| |NRC NOTIFIED BY: DAVID CROOK |LAST UPDATE DATE: 02/13/95 | |HQ OPS OFFICER: JOSEPH SEBROSKY +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |FLOYD CANTRELL RDO | |APRE 50.72(b)(2)(vi) OFFSITE NOTIFICATION | | | | | | | | | | | | | | +-----+----------+-------+--------+--------------+--+--------+-----------------+ |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 +------------------------------------------------------------------------------+ | THE LICENSEE ISSUED A PRESS RELEASE DUE TO DECLARING AN ALERT. (SEE EVENT | | #28376 FOR A DESCRIPTION OF THE ALERT.) | | | | THE LICENSEE HAS AN AGREEMENT WITH THE STATE OF SOUTH CAROLINA THAT A PRESS | | RELEASE WILL BE ISSUED ANYTIME THERE IS AN EMERGENCY CLASSIFICATION OF AN | | ALERT OR HIGHER AT THE PLANT. | | | | THE LICENSEE HAS INFORMED THE RESIDENT INSPECTOR. | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 28379 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: DIABLO CANYON REGION: 4 |NOTIFICATION DATE: 02/13/95 | |UNIT: [1] [2] [ ] STATE: CA |NOTIFICATION TIME: 17:32 [ET]| |RX TYPE: [1] W-4-LP,[2] W-4-LP |EVENT DATE: 02/13/95 | +------------------------------------------------+EVENT TIME: 14:10[PST]| |NRC NOTIFIED BY: BOB MAGRUDER |LAST UPDATE DATE: 02/13/95 | |HQ OPS OFFICER: JOSEPH SEBROSKY +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: UNUSUAL EVENT +-----------------------------+ |10 CFR SECTION: |CHRIS VANDENBURGH RDO | |AAEC 50.72(a)(1)(i) EMERGENCY DECLARED |AL CHAFFEE EO | | |SIMMERS FEMA | | |GOUTAM BAGCHI NRR | | |BOB ROTHMAN NRR | | | | +-----+----------+-------+--------+--------------+--+--------+-----------------+ |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 +------------------------------------------------------------------------------+ | AN UNUSUAL EVENT WAS DECLARED DUE TO AN EARTHQUAKE BEING FELT ON SITE AND | | INSTRUMENTATION ON SITE REGISTERING THE EARTHQUAKE. THE EARTHQUAKE'S | | MAGNITUDE WAS 2.7 ON THE RICHTER SCALE AND IT'S EPICENTER WAS LOCATED | | APPROXIMATELY 2.0 KILOMETERS SOUTHWEST OF THE PLANT. | | | | THE LICENSEE DECLARED THE UNUSUAL EVENT DUE TO THE EARTHQUAKE MEETING THE | | DEFINITION OF A "MODERATE EARTHQUAKE". THE DEFINITION OF A MODERATE | | EARTHQUAKE IS GROUND MOTION BEING FELT ONSITE AND INSTRUMENTATION AT THE | | SITE REGISTERING THE EARTHQUAKE. THE LICENSEE HAS TWO SETS OF SEISMIC | | INSTRUMENTATION. THE LESS SENSITIVE INSTRUMENTATION (KINAMETRICS) DID NOT | | 'TRIGGER' AT ITS SETPOINT OF 0.02g, THEREFORE, THE LICENSEE KNOWS THE | | GROUND MOTION AT THE PLANT WAS LESS THAN THIS VALUE. THE LICENSEE IS IN THE | | PROCESS OF REVIEWING THE INFORMATION FROM THE MORE SENSITIVE "TERRATECH" | | SEISMIC INSTRUMENTATION WHICH ALARMED DUE TO THE GROUND MOTION. | | | | THE EARTHQUAKE OCCURRED AT 14:02 PST, AND BASED ON THE INITIAL ASSESSMENT | | THE LICENSEE DECLARED AN UNUSUAL EVENT AT 14:10 PST. THE LICENSEE WILL | | EXIT THE UNUSUAL EVENT AFTER A WALKDOWN OF THE PLANT IS COMPLETE AND THE | | INFORMATION FROM THE "TERRATECH" SEISMIC INSTRUMENTATION IS REVIEWED. | | | | THE LICENSEE RECEIVED A REPORT FROM THE PACIFIC GAS AND ELECTRIC'S | | GEOSCIENCE DEPARTMENT THAT THE EARTHQUAKE'S MAGNITUDE WAS 2.7 ON THE | | RICHTER SCALE WITH AN EPICENTER APPROXIMATELY 2.0 KILOMETERS SOUTHWEST OF | | DIABLO CANYON. | | | | ALL ECCS AT THE SITE ARE OPERABLE. THE LICENSEE IS NOT CURRENTLY IN ANY | | LCO ON EITHER UNIT. THE LICENSEE HAS INFORMED THE RESIDENT INSPECTOR AND | | STATE AND LOCAL OFFICIALS IN ACCORDANCE WITH THEIR EMERGENCY PLAN. THE | | LICENSEE MAY ISSUE A PRESS RELEASE. | | | | *** UPDATE @ 17:55 ON 2/13/95 FROM MAGRUDER TAKEN BY SEBROSKY *** | | | | THE LICENSEE TERMINATED THE UNUSUAL EVENT AT 14:53 PST BASED ON REVIEW OF | | THE "TERRATECH" SEISMIC INSTRUMENTATION AND WALKDOWN OF THE PLANT. THE | | INSTRUMENTATION RECORDED THE GROUND ACCELERATION AS 0.0075g WHICH ALLOWS | | THE LICENSEE TO RECLASSIFY THE EVENT AS A MICRO EARTHQUAKE. THE LICENSEE | | HAS ALSO DONE A WALKDOWN OF THE UNITS AND THERE IS NO EVIDENCE OF ANY | | AFFECT OF THE EARTHQUAKE. | | | | THE LICENSEE HAS INFORMED THE RESIDENT INSPECTOR AND STATE AND LOCAL | | OFFICIALS OF THE TERMINATION OF THE UNUSUAL EVENT IN ACCORDANCE WITH THEIR | | EMERGENCY PROCEDURES. HOO NOTIFIED R4DO (VANDENBURGH), EO (CHAFFEE) AND | | FEMA (SIMMERS). | | | | HOO NOTE: THERE WAS A SUBSEQUENT CONVERSATION BETWEEN PACIFIC GAS AND | | ELECTRIC'S GEOSCIENCE DEPARTMENT (TSAI) AND NRR (ROTHMAN, BAGCHI, CHAFFEE) | | TO OBTAIN ADDITIONAL TECHNICAL INFORMATION ON THE EARTHQUAKE. ACCORDING TO | | PG&E THE EARTHQUAKE'S DEPTH WAS APPROXIMATELY 6.9 KILOMETERS AND IT'S | | EPICENTER WAS 2.2 KILOMETERS SOUTHWEST OF THE PLANT. | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 28380 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: CRYSTAL RIVER REGION: 2 |NOTIFICATION DATE: 02/13/95 | |UNIT: [3] [ ] [ ] STATE: FL |NOTIFICATION TIME: 17:39 [ET]| |RX TYPE: [3] B&W-L-LP |EVENT DATE: 02/13/95 | +------------------------------------------------+EVENT TIME: 16:00[EST]| |NRC NOTIFIED BY: DAVID JONES |LAST UPDATE DATE: 02/13/95 | |HQ OPS OFFICER: JOSEPH SEBROSKY +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |FLOYD CANTRELL RDO | |NINF INFORMATION ONLY | | | | | | | | | | | | | | +-----+----------+-------+--------+--------------+--+--------+-----------------+ |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 +------------------------------------------------------------------------------+ | THE LICENSEE CALLED TO INFORM THE OPERATIONS CENTER THAT THEIR EMERGENCY | | RESPONSE DATA SYSTEM (ERDS) IS OUT OF SERVICE. | | | | THE ERDS MODEM APPEARS TO BE INOPERABLE. THE LICENSEE EXPECTS TO INITIATE | | REPAIRS WITHIN 48 HOURS. THE LICENSEE HAS INFORMED THE RESIDENT INSPECTOR. | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 28381 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: CATAWBA REGION: 2 |NOTIFICATION DATE: 02/13/95 | |UNIT: [1] [ ] [ ] STATE: SC |NOTIFICATION TIME: 20:30 [ET]| |RX TYPE: [1] W-4-LP,[2] W-4-LP |EVENT DATE: 02/13/95 | +------------------------------------------------+EVENT TIME: 16:33[EST]| |NRC NOTIFIED BY: MARK PATRICK |LAST UPDATE DATE: 02/13/95 | |HQ OPS OFFICER: JOSEPH SEBROSKY +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |FLOYD CANTRELL RDO | |NINF INFORMATION ONLY | | | | | | | | | | | | | | +-----+----------+-------+--------+--------------+--+--------+-----------------+ |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 +------------------------------------------------------------------------------+ | RESIDUAL HEAT REMOVAL (RHR) WAS LOST FOR 23 MINUTES RESULTING IN A | | TEMPERATURE INCREASE OF 20ø F. | | | | THE FOLLOWING IS THE TEXT OF A FACSIMILE FROM THE LICENSEE: | | | | "ON 2/13/95 AT 1633 THE SUCTION VALVE (1ND37A) FOR THE OPERATING RHR TRAIN | | 1B WENT CLOSED. THE ABNORMAL PROCEDURE WAS ENTERED AND THE 1B RHR PUMP WAS | | SECURED. AS DIRECTED BY THE ABNORMAL PROCEDURE, THE OPERATORS COMPLETED | | STEPS TO VENT THE PUMP, REOPEN THE SUCTION VALVE, RESTART THE PUMP AND | | SUCCESSFULLY REESTABLISH NORMAL COOLING. REACTOR COOLANT TEMPERATURE WAS | | APPROXIMATELY 115ø F PRIOR TO THE VALVE GOING CLOSED. THE HIGHEST INCORE | | THERMOCOUPLE REACHED 135ø F AT THE TIME NORMAL COOLING WAS REESTABLISHED. | | TOTAL TIME THAT FLOW WAS LOST WAS 23 MINUTES. | | | | THE REACTOR COOLANT SYSTEM HAD LOOPS FILLED WITH ALL 4 SGs AVAILABLE, THE | | OPPOSITE RHR TRAIN (1A) WAS AVAILABLE WITHIN 15-20 MINUTES. INITIAL | | INVESTIGATION HAS DETERMINED THAT CLOSURE OF THE SUCTION VALVE WAS | | ASSOCIATED WITH A MODIFICATION THAT WAS BEING PERFORMED ON THE 1A RHR | | VALVE AUTO ISOLATION CIRCUITRY. FURTHER INFORMATION WILL BE PROVIDED UPON | | COMPLETION OF THE INVESTIGATION." END OF TEXT. | | | | THE LICENSEE SHUTDOWN THE UNIT TO REFUEL IT ON 2/10/95. THE 115ø F INITIAL | | TEMPERATURE WAS READ FROM THE RHR SUCTION TEMPERATURE. THE LICENSEE IS | | UNSURE OF THE EXACT REASON FOR THE CLOSURE AND IS CONTINUING TO INVESTIGATE | | THE PROBLEM. FURTHER INFORMATION WILL BE SUPPLIED BY THE LICENSEE VIA A | | "SPECIAL REPORT" ON THE PROBLEM. THE LICENSEE HAS INFORMED THE RESIDENT | | INSPECTOR. | +------------------------------------------------------------------------------+