U.S. Nuclear Regulatory Commission Operations Center Event Reports For 11/20/96 - 11/21/96 ** EVENT NUMBERS ** 31280 31359 31360 31361 31362 31363 !!!!!!!!! THIS EVENT HAS BEEN RETRACTED. THIS EVENT HAS BEEN RETRACTED !!!!!!! +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 31280 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: DUANE ARNOLD REGION: 3 |NOTIFICATION DATE: 11/05/96 | |UNIT: [1] [ ] [ ] STATE: IA |NOTIFICATION TIME: 17:58 [ET]| |RX TYPE: [1] GE-4 |EVENT DATE: 11/02/96 | +------------------------------------------------+EVENT TIME: 02:41[CST]| |NRC NOTIFIED BY: ZIMMERMAN |LAST UPDATE DATE: 11/20/96 | |HQ OPS OFFICER: BOB STRANSKY +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |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 COLD SHUTDOWN | 0 COLD SHUTDOWN | | | | | | | | | +-----+---------------------------------------------+--------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | LPCI SWING BUS FAILED TO TRANSFER IN REQUIRED TIME DURING TEST. | | | | WHILE PERFORMING A TEST OF THE LOW PRESSURE COOLANT INJECTION (LPCI) SWING | | BUS, THE BUS FAILED TO TRANSFER TO ITS ALTERNATE FEEDER BUS WITHIN THE | | REQUIRE TIME PERIOD AFTER THE PRIMARY FEEDER BUS WAS DISCONNECTED. THE | | LICENSEE STATED THAT THE TRANSFER TOOK FIVE MINUTES TO COMPLETE; HOWEVER, | | THIS TRANSFER NORMALLY TAKES FIVE SECONDS. | | | | THE LICENSEE DETERMINED THAT AN UNDERVOLTAGE RELAY WAS NOT WORKING | | PROPERLY. THE RELAY WAS REPLACED, AND THE TEST WAS RE-PERFORMED | | SATISFACTORILY. THE LICENSEE IS CURRENTLY EXAMINING THE RELAY TO DETERMINE | | THE CAUSE OF THE FAILURE. | | | | THE NRC RESIDENT INSPECTOR HAS BEEN INFORMED BY THE LICENSEE. | | | | * * * UPDATE AT 1526 EST ON 11/20/96, FROM NICK BROWN TAKEN BY KARSCH * * * | | | | THE LICENSEE IS RETRACTING THIS EVENT. THE LICENSEE BELIEVES THAT THE | | ORIGINAL DETERMINATION WAS OVERLY CONSERVATIVE. THE SECOND FAILURE | | POSTULATED WAS THE FAILURE OF THE DC CONTROL POWER. DC CONTROL POWER IS AN | | INDEPENDENT BATTERY BACKED SOURCE. THE ASSUMPTION THAT CONTROL POWER WOULD | | FAIL DUE TO THE INITIATING EVENT THAT DISABLES BUS TRANSFER IS NOT | | CREDIBLE. | | | | THE LICENSEE INFORMED THE NRC RESIDENT INSPECTOR. THE R3DO (MADERA) WAS | | NOTIFIED BY THE NRC OPERATIONS CENTER. | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 31359 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: CLINTON REGION: 3 |NOTIFICATION DATE: 11/20/96 | |UNIT: [1] [ ] [ ] STATE: IL |NOTIFICATION TIME: 01:26 [ET]| |RX TYPE: [1] GE-6 |EVENT DATE: 11/19/96 | +------------------------------------------------+EVENT TIME: 21:00[CST]| |NRC NOTIFIED BY: DAVID HODEL |LAST UPDATE DATE: 11/20/96 | |HQ OPS OFFICER: LEIGH TROCINE +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |JOHN MADERA 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 +------------------------------------------------------------------------------+ | INCORRECT MOUNTING BOLT TORQUE FOR HYDRAULIC CONTROL UNIT SEISMIC SUPPORT | | BRACKETS | | | | THE LICENSEE DISCOVERED THAT THE UPPER AND LOWER MOUNTING BOLTS THAT HOLD | | THE HYDRAULIC CONTROL UNITS TO SEISMIC SUPPORT BRACKETS WERE OVERTORQUED | | PER FIELD CHANGE REQUEST #11732 DURING CONSTRUCTION OF THE PLANT. THE | | HYDRAULIC CONTROL UNITS ARE PART OF THE CONTROL ROD DRIVE SYSTEM, AND THE | | CONTROL RODS HAVE BEEN DECLARED INOPERABLE DUE TO SEISMIC QUALIFICATION. | | THE UNIT IS NOT CURRENTLY IN A TECHNICAL SPECIFICATION LIMITING CONDITION | | FOR OPERATION BECAUSE THE UNIT IS IN A REFUELING OUTAGE, AND THIS PROBLEM | | IS CONSIDERED TO BE A RESTART ISSUE. ENGINEERING IS CONDUCTING AN | | EVALUATION AT THIS TIME. | | | | THE LICENSEE NOTIFIED THE NRC RESIDENT INSPECTOR. | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 31360 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: ZION REGION: 3 |NOTIFICATION DATE: 11/20/96 | |UNIT: [ ] [2] [ ] STATE: IL |NOTIFICATION TIME: 13:16 [ET]| |RX TYPE: [1] W-4-LP,[2] W-4-LP |EVENT DATE: 11/20/96 | +------------------------------------------------+EVENT TIME: 10:20[CST]| |NRC NOTIFIED BY: KURT BASNER |LAST UPDATE DATE: 11/20/96 | |HQ OPS OFFICER: RUDY KARSCH +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |JOHN MADERA 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 N 0 REFUELING | 0 REFUELING | | | | | +-----+---------------------------------------------+--------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | ACTUATION OF ENGINEERED SAFETY FEATURE FUNCTIONS DURING TESTING DUE TO | | HUMAN ERROR | | | | WHILE CONDUCTING A SPECIAL RESPONSE TIME TEST OF THE TRAIN 'A' REACTOR | | PROTECTION SYSTEM AND ENGINEERED SAFETY FEATURES, THE SYSTEM ENGINEER | | SHORTED A CONTACT WHICH RESULTED IN CLOSURE OF SEVERAL ISOLATION VALVES. | | THE FOLLOWING VALVES CLOSED: '2AOV DT 1003' - REACTOR COOLANT DRAIN TANK | | ISOLATION VALVE, '2FCV PR 24A' - CONTAINMENT RADIATION MONITOR ISOLATION | | VALVE, AND FIVE ISOLATION VALVES FOR VARIOUS PENETRATION SEALS. THERE WERE | | NO ADVERSE CONSEQUENCES, AND ALL ISOLATIONS HAVE BEEN RESET. | | | | THE LICENSEE INFORMED THE NRC RESIDENT INSPECTOR. | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 31361 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: SALEM REGION: 1 |NOTIFICATION DATE: 11/20/96 | |UNIT: [1] [2] [ ] STATE: NJ |NOTIFICATION TIME: 17:45 [ET]| |RX TYPE: [1] W-4-LP,[2] W-4-LP |EVENT DATE: 11/20/96 | +------------------------------------------------+EVENT TIME: 16:45[EST]| |NRC NOTIFIED BY: LAWRENCE CURRAN |LAST UPDATE DATE: 11/20/96 | |HQ OPS OFFICER: RUDY KARSCH +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |WILLIAM RULAND 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 | | 2 | N N 0 REFUELING | 0 REFUELING | | | | | +-----+---------------------------------------------+--------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | EMERGENCY DIESEL GENERATOR (EDG) COOLING WATER CHECK VALVES ARE SUBJECT TO | | A FAILURE MODE WHICH COULD RENDER ALL EDGs INOPERABLE. | | | | THE COOLING WATER SUPPLY CHECK VALVES HAVE TYPE-316 AUSTENITIC STAINLESS | | STEEL COMPONENTS WHICH ARE SUSCEPTIBLE TO CREVICE CORROSION IN A STAGNANT | | OXYGEN-DEPLETED ENVIRONMENT. INVESTIGATION OF A LEAKING VALVE REVEALED | | EXTENSIVE CORROSION OF THE HINGE PIN. THE LICENSEE IS REVIEWING OTHER | | VALVES TO DETERMINE IF THE SAME CONDITION COULD EXIST. SUSCEPTIBLE | | MATERIALS WILL BE REPLACED PRIOR TO MODE CHANGE. | | | | THE LICENSEE WILL INFORM THE NRC RESIDENT INSPECTOR AND HAS INFORMED LOWER | | ALLOWAYS CREEK TOWNSHIP. | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 31362 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: SOUTH TEXAS REGION: 4 |NOTIFICATION DATE: 11/20/96 | |UNIT: [1] [ ] [ ] STATE: TX |NOTIFICATION TIME: 17:55 [ET]| |RX TYPE: [1] W-4-LP,[2] W-4-LP |EVENT DATE: 11/20/96 | +------------------------------------------------+EVENT TIME: 16:00[CST]| |NRC NOTIFIED BY: LOUIS PETER |LAST UPDATE DATE: 11/20/96 | |HQ OPS OFFICER: RUDY KARSCH +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |WILLIAM JOHNSON 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 +------------------------------------------------------------------------------+ | DISCOVERY OF A WESTINGHOUSE 480-VOLT CIRCUIT BREAKER IN A NON-SEISMICALLY | | QUALIFIED POSITION [HOO NOTE: SIMILAR NOTIFICATIONS HAVE BEEN RECEIVED | | FROM SUSQUEHANNA, COMANCHE PEAK, THREE MILE ISLAND, AND OYSTER CREEK. REFER | | TO EVENT NUMBERS 31279, 31322, 31323, AND 31325 FOR ADDITIONAL | | INFORMATION.] | | | | THE LICENSEE FOUND A WESTINGHOUSE 480-VOLT CIRCUIT BREAKER IN CLASS-1E | | SWITCHGEAR IN THE "REMOVE" POSITION. WITH THE BREAKER IN THAT POSITION, | | THE SWITCHGEAR IS NOT SEISMICALLY QUALIFIED. THE BREAKER IS A SPARE AND | | HAS BEEN RACKED INTO THE "DISCONNECT" POSITION. IN THIS POSITION, THE | | SWITCHGEAR IS QUALIFIED. | | | | THE LICENSEE INFORMED THE NRC RESIDENT INSPECTOR. | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 31363 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: CRYSTAL RIVER REGION: 2 |NOTIFICATION DATE: 11/20/96 | |UNIT: [3] [ ] [ ] STATE: FL |NOTIFICATION TIME: 18:41 [ET]| |RX TYPE: [3] B&W-L-LP |EVENT DATE: 11/20/96 | +------------------------------------------------+EVENT TIME: 18:30[EST]| |NRC NOTIFIED BY: WALTER NEUMAN |LAST UPDATE DATE: 11/20/96 | |HQ OPS OFFICER: RUDY KARSCH +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |MARK LESSER RDO | |DDDD 73.71 UNSPECIFIED PARAGRAPH | | | | | | | | | | | | | | +-----+----------+-------+--------+--------------+--+--------+-----------------+ |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 +------------------------------------------------------------------------------+ | SECURITY EVENT INVOLVING A SAFEGUARDS SYSTEM DEGRADATION RELATED TO AN | | ALARM. COMPENSATORY MEASURES WERE TAKEN. (REFER TO THE HOO LOG FOR | | DETAILS.) | | | | THE LICENSEE WILL INFORM THE NRC RESIDENT INSPECTOR. | +------------------------------------------------------------------------------+