U.S. Nuclear Regulatory Commission Operations Center Event Reports For 11/25/96 - 11/26/96 ** EVENT NUMBERS ** 31269 31283 31378 31379 31380 31381 !!!!!!!!! THIS EVENT HAS BEEN RETRACTED. THIS EVENT HAS BEEN RETRACTED !!!!!!! +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 31269 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: NINE MILE POINT REGION: 1 |NOTIFICATION DATE: 11/02/96 | |UNIT: [ ] [2] [ ] STATE: NY |NOTIFICATION TIME: 10:42 [ET]| |RX TYPE: [1] GE-2,[2] GE-5 |EVENT DATE: 11/02/96 | +------------------------------------------------+EVENT TIME: 08:13[EST]| |NRC NOTIFIED BY: TOM LYNCH |LAST UPDATE DATE: 11/25/96 | |HQ OPS OFFICER: DOUG WEAVER +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |MOHAMED SHANBAKY RDO | |AINA 50.72(b)(2)(iii)(A) POT UNABLE TO SAFE SD | | |NLCO TECH SPEC LCO A/S | | | | | | | | | | | +-----+----------+-------+--------+--------------+--+--------+-----------------+ |UNIT |SCRAM CODE|RX CRIT|INIT PWR| INIT RX MODE |CURR PWR| CURR RX MODE | +-----+----------+-------+--------+-----------------+--------+-----------------+ | | | | | 2 | N Y 6 STARTUP | 6 STARTUP | | | | | +-----+---------------------------------------------+--------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | HIGH PRESSURE CORE SPRAY (HPCS) INOPERABLE | | | | AT 0813, THE DIVISION III EMERGENCY SWITCHGEAR WAS DECLARED INOPERABLE | | BECAUSE ITS ASSOCIATED VENTILATION UNIT COOLER WAS INOPERABLE. THE | | VENTILATION COOLER WAS DECLARED INOPERABLE BECAUSE A MISSING INSPECTION | | COVER WOULD HAVE SHORT CYCLED THE COOL AIR AND PREVENTED THE PROPER COOLING | | OF THE SWITCHGEAR. THE DIVISION III SWITCHGEAR SUPPLIES POWER TO THE HPCS | | SYSTEM. THEREFORE, HPCS WAS ALSO DECLARED INOPERABLE. SINCE HPCS IS A | | SINGLE TRAIN HIGH PRESSURE INJECTION SYSTEM, THIS EVENT WAS REPORTED AS | | AFFECTING THE SAFE SHUTDOWN CAPABILITY OF THE PLANT. THE MISSING | | INSPECTION COVER WAS RE-INSTALLED AT 0825, AND HPCS IS AGAIN CONSIDERED | | OPERABLE. | | | | THE LICENSEE INFORMED THE NRC RESIDENT INSPECTOR. | | | | * * * UPDATE AT 1555 ON 11/25/96, BY CHWALEK, TAKEN BY WEAVER * * * | | | | THE LICENSEE IS RETRACTING THIS EVENT BASED ON THE FOLLOWING. AN | | ENGINEERING REVIEW PERFORMED SUBSEQUENT TO THE EVENT NOTIFICATION | | DETERMINED THAT THE UNIT COOLER WAS NOT INOPERABLE WITH THE INSPECTION | | COVER REMOVED. AS A RESULT, DIVISION III EMERGENCY SWITCHGEAR AND THE HPCS | | WERE NOT INOPERABLE. THE UNIT COOLER AND ASSOCIATED DUCT WORK ARE LOCATED | | IN A SMALL WELL-SEALED ROOM. THE RUNNING FAN DRAWS THE ROOM TO A NEGATIVE | | PRESSURE WITH NO OTHER SOURCE FOR AIR FLOWING THROUGH THE FAN AND DUCT | | EXCEPT THROUGH THE NORMAL FLOW PATH (WITH INSPECTION COVER REMOVED). | | THEREFORE, THE COOLER CONTINUED TO PERFORM ITS NORMAL FUNCTION. THE NRC | | RESIDENT INSPECTOR WILL BE NOTIFIED. THE HOO NOTIFIED THE R1DO (RULAND). | +------------------------------------------------------------------------------+ !!!!!!!!! THIS EVENT HAS BEEN RETRACTED. THIS EVENT HAS BEEN RETRACTED !!!!!!! +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 31283 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: CLINTON REGION: 3 |NOTIFICATION DATE: 11/06/96 | |UNIT: [1] [ ] [ ] STATE: IL |NOTIFICATION TIME: 05:05 [ET]| |RX TYPE: [1] GE-6 |EVENT DATE: 11/06/96 | +------------------------------------------------+EVENT TIME: 03:00[CST]| |NRC NOTIFIED BY: HODEL |LAST UPDATE DATE: 11/25/96 | |HQ OPS OFFICER: CHAUNCEY GOULD +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |MICHAEL J. JORDAN 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 REFUELING | 0 REFUELING | | | | | | | | | +-----+---------------------------------------------+--------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | THE LICENSEE DISCOVERED A CONDITION WHERE THE SECONDARY CONTAINMENT MAY BE | | INOPERABLE IN MODES 1, 2, & 3 DUE TO INVALID TESTING. | | | | DURING SECONDARY CONTAINMENT INTEGRITY WALKDOWNS, THE LICENSEE NOTICED | | THAT RHR "A", "B", & "C" ROOM FLOOR DRAIN SUMP VENTS ARE CONNECTED TO THE | | AUXILIARY BUILDING EXHAUST VENTILATION SYSTEM SUCTION WITHOUT AN ISOLATION | | VALVE. AS A RESULT OF THIS CONDITION, FIELD MEASUREMENTS INDICATE THAT THE | | AUX BUILDING VENT SYSTEM IS PULLING AIR OUT OF THE RHR "A" ROOM. BASED ON | | THIS PRELIMINARY INFORMATION, ENGINEERING HAS CONSERVATIVELY ASSUMED THAT | | THE AUX BUILDING VENT SYSTEM HAS BEEN ASSISTING THE SECONDARY CONTAINMENT | | VENT SYSTEM IN MAINTAINING SECONDARY CONTAINMENT. THIS CONDITION COULD | | AFFECT THE SURVEILLANCE REQUIREMENTS FOR SECONDARY CONTAINMENT IF THE AUX | | BUILDING VENT SYSTEM ACTUALLY ASSISTS IN THE DRAW DOWN TEST AND INVALIDATES | | THE TEST. THIS WOULD MAKE SECONDARY CONTAINMENT INOPERABLE IN MODES 1, 2, | | & 3. THIS ENGINEERING EVALUATION WAS ONLY PERFORMED ON RHR "A" VENTS, BUT | | RHR "B" & "C" VENTS WILL ALSO BE EVALUATED. IT APPEARS THAT THIS CONDITION | | HAS EXISTED SINCE THE PLANT WAS BUILT. CORRECTIVE MEASURES HAVE NOT YET | | BEEN DETERMINED. THE LICENSEE WILL INFORM THE NRC RESIDENT INSPECTOR. | | | | * * * UPDATE AT 1500 ON 11/25/96, BY SHORT, TAKEN BY WEAVER * * * | | | | THIS LICENSEE IS RETRACTING THIS EVENT BASED ON FURTHER REVIEW. AN | | ANALYSIS OF THE FLOW RATE GOING THROUGH THE AUX BUILDING VENTILATION WAS | | DONE, AND THIS WAS CONVERTED INTO A PENALTY TIME WHICH WAS ADDED TO THE | | SURVEILLANCE TIMES FOR THE STANDBY GAS TREATMENT SYSTEM. EVEN WITH THIS | | PENALTY TIME ADDED, ALL SURVEILLANCES SINCE 05/20/92, WOULD STILL HAVE BEEN | | SUCCESSFUL. THE LICENSEE HAS CAPPED THE FLOW PATHS INVOLVED; THEREFORE, | | THIS SITUATION WILL NOT AFFECT FUTURE PERFORMANCE OF THE STANDBY GAS | | TREATMENT SYSTEM. THE LICENSEE INFORMED THE NRC RESIDENT INSPECTOR. | | THE HOO NOTIFIED THE R3DO (LANKSBURY). | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 31378 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: MILLSTONE REGION: 1 |NOTIFICATION DATE: 11/25/96 | |UNIT: [1] [ ] [ ] STATE: CT |NOTIFICATION TIME: 14:23 [ET]| |RX TYPE: [1] GE-3,[2] CE,[3] W-4-LP |EVENT DATE: 11/25/96 | +------------------------------------------------+EVENT TIME: 14:11[EST]| |NRC NOTIFIED BY: CHRIS TABONE |LAST UPDATE DATE: 11/25/96 | |HQ OPS OFFICER: DOUG WEAVER +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |WILLIAM RULAND 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 N 0 REFUELING | 0 REFUELING | | | | | | | | | +-----+---------------------------------------------+--------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | THE PRIMARY CONTAINMENT ISOLATION VALVES IN THE REACTOR WATER CLEANUP | | (RWCU) SYSTEM WILL NOT ISOLATE UNDER ALL REQUIRED CONDITIONS. | | | | CERTAIN RWCU SYSTEM LINEUP COMBINATIONS (PUMP AND POWER SUPPLY | | COMBINATIONS) WILL NOT ISOLATE FOR ALL SINGLE FAILURES. THE FAILURE OF A | | SINGLE DC POWER SUPPLY (#S2-DC101A) COMBINED WITH A LOSS OF NORMAL POWER | | COULD PREVENT THE OPERATION OF THE PRIMARY CONTAINMENT ISOLATION VALVES IN | | THE RWCU SYSTEM. THIS FUNCTION IS NOT CURRENTLY REQUIRED BECAUSE OF PLANT | | CONDITIONS. THIS SITUATION WILL BE RESOLVED PRIOR TO PLANT RESTART. | | | | THE LICENSEE INFORMED THE NRC RESIDENT INSPECTOR AS WELL AS STATE AND LOCAL | | GOVERNMENT OFFICIALS. | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 31379 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: ARKANSAS NUCLEAR REGION: 4 |NOTIFICATION DATE: 11/25/96 | |UNIT: [ ] [2] [ ] STATE: AR |NOTIFICATION TIME: 17:46 [ET]| |RX TYPE: [1] B&W-L-LP,[2] CE |EVENT DATE: 11/25/96 | +------------------------------------------------+EVENT TIME: 13:46[CST]| |NRC NOTIFIED BY: TOM MOSBY |LAST UPDATE DATE: 11/25/96 | |HQ OPS OFFICER: DOUG WEAVER +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |WILLIAM JOHNSON 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 N 0 COLD SHUTDOWN | 0 COLD SHUTDOWN | | | | | +-----+---------------------------------------------+--------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | OFFSITE NOTIFICATION OF A FIRE OUTSIDE THE PROTECTED AREA | | | | AT 1346, ON 11/25/96, UNIT 2 CONTROL ROOM OPERATORS RECEIVED A CALL ON THE | | ONSITE EMERGENCY TELEPHONE FROM A WOMAN AT THE GENERATION SUPPORT BUILDING | | (GSB) LOCATED OUTSIDE THE PROTECTED AREA. SHE REPORTED THAT SHE HEARD A | | LOUD POPPING NOISE, NOTICED THE LIGHTS FLICKERING, AND SMELLED SMOKE. UNIT | | 2 CONTROL ROOM OPERATORS CALLED THE LONDON, ARKANSAS FIRE DEPARTMENT FOR | | ASSISTANCE. AFTER THE INITIAL NOTIFICATION BUT PRIOR TO THE ARRIVAL OF THE | | FIRE DEPARTMENT, THE CONTROL ROOM OPERATORS WERE INFORMED THAT A SHORT IN A | | LIGHTING JUNCTION BOX WAS THE SOURCE OF THE SOUND AND ODOR BUT THAT NO FIRE | | EXISTED. EFFORTS TO CONTACT THE FIRE DEPARTMENT PRIOR TO THEIR ARRIVAL TO | | REQUEST THAT THEY NOT COME TO THE GSB WERE UNSUCCESSFUL. WHEN THE FIRE | | DEPARTMENT ARRIVED AT THE GSB, THEY WERE INFORMED THAT THERE WAS NO FIRE | | AND THAT THE SITUATION WAS UNDER CONTROL. THE FIRE FIGHTERS DID NOT ENTER | | THE PROTECTED AREA. THE FIRE DEPARTMENT WAS RELEASED TO RETURN TO THEIR | | STATION. | | | | THE LICENSEE INFORMED THE NRC RESIDENT INSPECTOR AND STATE GOVERNMENT | | OFFICIALS. THE LICENSEE MADE THIS REPORT TO THE OPERATIONS CENTER BECAUSE | | THEY EXPECT TO ISSUE A PRESS RELEASE. | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 31380 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: KEWAUNEE REGION: 3 |NOTIFICATION DATE: 11/25/96 | |UNIT: [1] [ ] [ ] STATE: WI |NOTIFICATION TIME: 17:53 [ET]| |RX TYPE: [1] W-2-LP |EVENT DATE: 11/25/96 | +------------------------------------------------+EVENT TIME: 16:30[CST]| |NRC NOTIFIED BY: RICK PULEC |LAST UPDATE DATE: 11/25/96 | |HQ OPS OFFICER: DOUG WEAVER +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |ROGER LANKSBURY 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 +------------------------------------------------------------------------------+ | ERRORS REPORTED IN THE LARGE BREAK LOCA ANALYSIS | | | | SIEMANS POWER CORPORATION REPORTED TO THE LICENSEE THAT THE CORRECTION | | OF ERRORS IN THE LARGE BREAK LOCA ANALYSIS RESULTED IN CALCULATIONS THAT | | SHOW THAT THE 2,200øF LIMIT OF 10 CFR 50.46 WOULD BE EXCEEDED. THE ERRORS | | RELATED TO THE HEAT TRANSFER COEFFICIENTS USED IN THE LOCA ANALYSIS MODEL. | | THE PLANT IS CURRENTLY SHUTDOWN AND WILL NOT BE RESTARTED UNTIL THIS ISSUE | | IS RESOLVED. | | | | THE LICENSEE WILL INFORM THE NRC RESIDENT INSPECTOR. | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 31381 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: SALEM REGION: 1 |NOTIFICATION DATE: 11/25/96 | |UNIT: [1] [2] [ ] STATE: NJ |NOTIFICATION TIME: 21:10 [ET]| |RX TYPE: [1] W-4-LP,[2] W-4-LP |EVENT DATE: 11/25/96 | +------------------------------------------------+EVENT TIME: 19:00[EST]| |NRC NOTIFIED BY: HAMILTON |LAST UPDATE DATE: 11/25/96 | |HQ OPS OFFICER: DOUG WEAVER +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |WILLIAM RULAND RDO | |AINB 50.72(b)(2)(iii)(B) POT RHR INOP | | | | | | | | | | | | | | +-----+----------+-------+--------+--------------+--+--------+-----------------+ |UNIT |SCRAM CODE|RX CRIT|INIT PWR| INIT RX MODE |CURR PWR| CURR RX MODE | +-----+----------+-------+--------+-----------------+--------+-----------------+ | 1 | N N 0 REFUELING | 0 REFUELING | | 2 | N N 0 REFUELING | 0 REFUELING | | | | | +-----+---------------------------------------------+--------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | THE COMPONENT COOLING WATER SYSTEM IS SUSCEPTIBLE TO A SINGLE FAILURE | | | | THIS EVENT REPORT IS WRITTEN FOR UNIT 2 BUT ALSO APPLIES TO UNIT 1. | | | | "DURING AN OPERABILITY REVIEW OF THE #22 COMPONENT COOLING ROOM COOLER | | INITIATED BY THE ENGINEERING DESIGN GROUP TO DETERMINE SINGLE FAILURE | | VULNERABILITY, ENGINEERING DISCOVERED THAT THE FAILURE OF THIS ROOM COOLER | | COULD RESULT IN THE FAILURE OF TWO COMPONENT COOLING WATER (CCW) PUMPS DUE | | TO HIGH ROOM TEMPERATURES. UNDER PREVIOUS OPERATION, MAINTENANCE OF ONE CCW | | PUMP WAS ALLOWED WITHOUT ENTERING THE LIMITING CONDITION FOR OPERATION OF | | THE CCW SYSTEM. THE #22 AND #23 CCW PUMPS ARE LOCATED IN THE SAME ROOM | | WHICH IS COOLED PREDOMINANTLY BY THE #22 CC ROOM COOLER. DURING LARGE | | BREAK LOCA ACCIDENTS, THE CCW SYSTEM IS ALIGNED TO REMOVE HEAT FROM THE RHR | | HEAT EXCHANGERS WHILE IN RECIRCULATION PHASE. IF #21 CCW PUMP WAS REMOVED | | FROM SERVICE FOR MAINTENANCE AND A SINGLE FAILURE OCCURRED ON THE #22 CCW | | ROOM COOLER, THERE IS A POTENTIAL TO LOSE ALL COMPONENT COOLING DUE TO THE | | LACK OF A FULL UNDERSTANDING OF SYSTEM DESIGN BASIS AND LACK OF ADEQUATE | | ADMINISTRATIVE CONTROLS. A DETAILED ROOM TEMPERATURE ANALYSIS IS CURRENTLY | | IN PROGRESS TO DETERMINE LONG TERM EFFECTS ON PUMP AVAILABILITY WITH A | | FAILED CCW ROOM COOLER. CURRENTLY BOTH SALEM UNITS ARE IN A DEFUELED MODE, | | AND THE CCW SYSTEM IS NOT REQUIRED TO BE OPERABLE TO MITIGATE DESIGN BASIS | | ACCIDENTS. SPENT FUEL COOLING IS CURRENTLY IN SERVICE AND BEING SUPPORTED | | BY CCW SYSTEM OPERATION. ANALYSIS HAS SHOWN THERE IS ADEQUATE TIME TO TAKE | | CORRECTIVE ACTIONS FOR FAILURES THAT COULD CHALLENGE THE SPENT FUEL | | COOLING." | | | | THE NRC RESIDENT HAS BEEN NOTIFIED AND THE LOWER ALLOWAYS CREEK TOWNSHIP | | WILL BE NOTIFIED. | +------------------------------------------------------------------------------+