U.S. Nuclear Regulatory Commission Operations Center Event Reports For 12/03/96 - 12/04/96 ** EVENT NUMBERS ** 31397 31398 31399 31400 31401 +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 31397 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: PALO VERDE REGION: 4 |NOTIFICATION DATE: 12/03/96 | |UNIT: [1] [ ] [ ] STATE: AZ |NOTIFICATION TIME: 10:20 [ET]| |RX TYPE: [1] CE,[2] CE,[3] CE |EVENT DATE: 12/03/96 | +------------------------------------------------+EVENT TIME: 07:35[MST]| |NRC NOTIFIED BY: SGT. TIM CROWDER |LAST UPDATE DATE: 12/03/96 | |HQ OPS OFFICER: LEIGH TROCINE +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |TOM STETKA RDO | |DDDD 73.71 UNSPECIFIED PARAGRAPH | | | | | | | | | | | | | | +-----+----------+-------+--------+--------------+--+--------+-----------------+ |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 AN UNCONTROLLED SECURITY WEAPON | | | | THE LICENSEE IDENTIFIED AN UNATTENDED SECURITY WEAPON. COMPENSATORY | | MEASURES WERE TAKEN UPON DISCOVERY. (REFER TO THE HOO LOG FOR ADDITIONAL | | DETAILS AND FOR A SITE CONTACT TELEPHONE NUMBER.) THE LICENSEE PLANS TO | | NOTIFY THE NRC RESIDENT INSPECTOR. | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 31398 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: FERMI REGION: 3 |NOTIFICATION DATE: 12/03/96 | |UNIT: [2] [ ] [ ] STATE: MI |NOTIFICATION TIME: 11:40 [ET]| |RX TYPE: [2] GE-4 |EVENT DATE: 12/03/96 | +------------------------------------------------+EVENT TIME: 09:19[EST]| |NRC NOTIFIED BY: PAUL KIEL |LAST UPDATE DATE: 12/03/96 | |HQ OPS OFFICER: RUDY KARSCH +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |MONTE PHILLIPS 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 COLD SHUTDOWN | 0 COLD SHUTDOWN | | | | | | | | | +-----+---------------------------------------------+--------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | LOSS OF SHUTDOWN COOLING DUE TO UNEXPLAINED CLOSURE OF THE SUCTION PATH | | ISOLATION VALVE. | | | | THE "C" RHR PUMP TRIPPED WHILE IN THE SHUTDOWN COOLING MODE. THE PUMP | | TRIPPED WHEN VALVE "E11F009", THE CONTAINMENT ISOLATION VALVE IN THE | | SUCTION PATH FROM THE VESSEL, CLOSED FOR NO APPARENT REASON. THIS IS THE | | ONLY SUCTION LINE FOR SHUTDOWN COOLING, SO EVEN THOUGH OTHER RHR PUMPS WERE | | AVAILABLE, SHUTDOWN COOLING WAS LOST FOR 25 MINUTES. VESSEL TEMPERATURE | | ROSE 2øF BEFORE THE VALVE COULD BE REOPENED AND SHUTDOWN COOLING RESTORED. | | THE LICENSEE WILL INFORM THE NRC RESIDENT INSPECTOR. | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |FUEL CYCLE FACILITY | |EVENT NUMBER: 31399 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: GE NUCLEAR ENERGY |NOTIFICATION DATE: 12/03/96 | | RXTYPE: URANIUM FUEL FABRICATION |NOTIFICATION TIME: 12:48 [ET]| |COMMENTS: LEU CONVERSION (UF6 TO UO2) |EVENT DATE: 12/03/96 | | LEU FABRICATION |EVENT TIME: 09:00[EST]| | LWR COMMERICAL FUEL |LAST UPDATE DATE: 12/03/96 | | CITY: WILMINGTON REGION: 2 +-----------------------------+ | COUNTY: NEW HANOVER STATE: NC |PERSON ORGANIZATION| |LICENSE#: SNM-1097 AGREEMENT: Y |BRUNO URYC RDO | | DOCKET: 07001113 |DON COOL EO | +------------------------------------------------+RICHARD BARRETT IRD | |NRC NOTIFIED BY: LON PAULSON | | |HQ OPS OFFICER: STEVE SANDIN | | +------------------------------------------------+ | |EMERGENCY CLASS: NOT APPLICABLE | | |10 CFR SECTION: | | |NBNL RESPONSE-BULLETIN | | | | | | | | | | | | | | +------------------------------------------------+-----------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | LICENSEE IS MAKING AN NRC BULLETIN 91-01 NOTIFICATION. | | | | "AT APPROXIMATELY 0900 A.M. ON DECEMBER 3, 1996, 38.77 KGS OF 4.90% | | ENRICHED MATERIAL WAS OBSERVED BETWEEN LINE 3 CALCINER INNER TUBE AND THE | | OUTER HEAT SHIELD. THE MATERIAL WAS PROMPTLY PLACED INTO SAFE GEOMETRY | | 3-GALLON CONTAINERS. THE ACTIVE ENGINEERED INTERLOCK ON TUBE ROTATION | | FAILED TO MINIMIZE THE ACCUMULATION. | | | | "WE ARE REPORTING THIS CONDITION PURSUANT TO NRC BULLETIN 91-01. THIS | | REPORT IS REQUIRED WITHIN 4 HOURS SINCE THE ACTIVE ENGINEERED CONTROL | | MINIMIZING ACCUMULATION OUTSIDE OF THE CALCINER TUBE WAS LOST AND THE TIME | | REQUIRED FOR CALCINER TUBE REPLACEMENT IS GREATER THAN 4 HOURS. THE LINE 3 | | CALCINER OPERATION HAS BEEN SHUTDOWN PENDING ALLOY TUBE REPLACEMENT AND | | IMPLEMENTATION OF CORRECTIVE ACTIONS." | | | | THE LICENSEE COMPLETED THEIR EVENT NOTIFICATION SHEET IDENTIFYING THE | | FOLLOWING: | | | | SAFETY SIGNIFICANCE OF EVENT: LOW SIGNIFICANCE - THE TUBE BREAK WAS | | LOCALIZED, THE CIRCUMFERENTIAL CRACK AFFECTED A 1/2-INCH WIDE SECTION OF | | THE 10" X 26' LONG CYLINDER. | | | | POTENTIAL CRITICALITY PATHWAYS INVOLVED: MULTIPLE FAILURE MODES WOULD BE | | REQUIRED BEFORE A CRITICALITY EXCURSION IS POSSIBLE. | | | | CONTROLLED PARAMETERS: GEOMETRY: 10" I.D. X 26' LONG INCONEL TUBE, 3/8" | | THICK WALL; GEOMETRY/MASS: CONTROL SYSTEM MUST AUTOMATICALLY STOP DRIVE | | MOTOR, URANIUM, AND STEAM INPUTS TO THE CALCINER IF CALCINER TUBE ROTATION | | STOPS (MINIMIZE ACCUMULATION OUTSIDE OF TUBE). | | | | ESTIMATED AMOUNT, ENRICHMENT, FORM OF LICENSED MATERIAL: TOTAL URANIUM | | INVOLVED WAS LESS THAN 38.77 KGS OF OXIDIZED MATERIAL (4.90 WT.% U235). | | SAFE HETEROGENEOUS MASS LIMIT FOR 5.00% ENRICHED FOR UO2 + WATER IS 25 KGS. | | | | NUCLEAR CRITICALITY SAFETY CONTROL(S) OR CONTROL SYSTEM(S) AND DESCRIPTION | | OF THE FAILURES OR DEFICIENCIES: TUBE GEOMETRY FAILED AS A RESULT OF | | BREAK; GEOMETRY/MASS CONTROL MINIMIZING ACCUMULATION WAS LOST AS A RESULT | | OF THE TUBE ROTATION INTERLOCK FAILURE. | | | | CORRECTIVE ACTIONS TO RESTORE SAFETY SYSTEMS AND WHEN EACH WAS IMPLEMENTED: | | | | 11/30/96 (1300) - LINE 3 CALCINER SHUTDOWN DUE TO SUSPECTED TUBE FAILURE. | | 12/03/96 (0900) - LINE 3 HEAT SHIELD REMOVED; ACCUMULATION OBSERVED & | | VACUUMED INTO 3-GALLON CANS; U-CONTENT AND O/U RATIO ANALYSIS PENDING. | | 12/03/96 - CHANGE REQUEST (CR NO. 96.0735) INITIATED TO REPLACE LINE 3 | | CALCINER TUBE. | | | | THE LICENSEE WILL INFORM LOCAL/STATE AGENCIES AND REGION II. | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 31400 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: BEAVER VALLEY REGION: 1 |NOTIFICATION DATE: 12/03/96 | |UNIT: [ ] [2] [ ] STATE: PA |NOTIFICATION TIME: 18:30 [ET]| |RX TYPE: [1] W-3-LP,[2] W-3-LP |EVENT DATE: 12/03/96 | +------------------------------------------------+EVENT TIME: 17:35[EST]| |NRC NOTIFIED BY: JIM DAUGHERTY |LAST UPDATE DATE: 12/03/96 | |HQ OPS OFFICER: STEVE SANDIN +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |GLENN MEYER RDO | |ARPS 50.72(b)(2)(ii) RPS ACTUATION | | | | | | | | | | | | | | +-----+----------+-------+--------+--------------+--+--------+-----------------+ |UNIT |SCRAM CODE|RX CRIT|INIT PWR| INIT RX MODE |CURR PWR| CURR RX MODE | +-----+----------+-------+--------+-----------------+--------+-----------------+ | | | | | 2 | M/R Y 0 STARTUP | 0 HOT STANDBY | | | | | +-----+---------------------------------------------+--------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | UNIT 2 WAS MANUALLY TRIPPED DURING LOW POWER PHYSICS TESTING TO EXPEDITE | | SHUTDOWN AND REPAIRS ASSOCIATED WITH THE REACTOR VESSEL HEAD VENT SYSTEM. | | | | "UNIT 2 REACTOR HAD BEEN CRITICAL IN MODE 2 FOR LOW POWER PHYSICS TESTING. | | MANAGEMENT HAD DETERMINED THAT THE REACTOR HAD TO BE SHUTDOWN DUE TO ISSUES | | ASSOCIATED WITH THE REACTOR VESSEL HEAD VENT SYSTEM. | | | | "DUE TO THE PHYSICS TESTING IN PROGRESS, ALL CONTROL RODS WERE FULLY | | WITHDRAWN (227 STEPS) EXCEPT FOR CONTROL BANK B. CONTROL BANK B WAS | | INSERTED TO 132 STEPS. | | | | "SINCE REACTOR SHUTDOWN WAS NOT TO BE DELAYED UNTIL RODS COULD BE RETURNED | | TO A NORMAL ALIGNMENT (NORMALLY D CONTROL BANK WOULD BE PARTIALLY | | INSERTED), IT WAS DETERMINED THAT A MORE CONSERVATIVE ACTION WOULD BE A | | MANUAL REACTOR TRIP. MANUAL TRIP WAS PERFORMED AT 1735 HOURS." | | | | ALL RODS FULLY INSERTED. THERE IS NO SAFETY RELATED EQUIPMENT OUT OF | | SERVICE AT THIS TIME. THE LICENSEE INFORMED THE NRC RESIDENT INSPECTOR. | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 31401 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: WATERFORD REGION: 4 |NOTIFICATION DATE: 12/03/96 | |UNIT: [3] [ ] [ ] STATE: LA |NOTIFICATION TIME: 19:27 [ET]| |RX TYPE: [3] CE |EVENT DATE: 12/03/96 | +------------------------------------------------+EVENT TIME: 17:45[CST]| |NRC NOTIFIED BY: OSCAR PIPKINS |LAST UPDATE DATE: 12/03/96 | |HQ OPS OFFICER: STEVE SANDIN +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |TOM STETKA RDO | |ADEG 50.72(b)(1)(ii) DEGRAD COND DURING OP | | |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 | +-----+----------+-------+--------+-----------------+--------+-----------------+ | 3 | N Y 100 POWER OPERATION | 100 POWER OPERATION | | | | | | | | | +-----+---------------------------------------------+--------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | THE LICENSEE IDENTIFIED TWO ELECTRICAL CABLE RACEWAYS WHICH DID NOT HAVE | | THE APPENDIX "R" REQUIRED FIRE WRAPS. | | | | "ON 12/3/96 AT 1745, WITH THE PLANT OPERATING AT 100% POWER, IT WAS | | DETERMINED THAT THE PLANT HAD OPERATED OUTSIDE OF THE PLANT DESIGN BASIS | | VIA AN APPENDIX R VIOLATION THAT AFFECTS TWO CABLES THAT ARE LISTED AS | | ESSENTIAL IN THE ASSOCIATED CIRCUIT ANALYSIS. THE CABLE WERE FOUND TO BE | | ROUTED THROUGH THE CABLE VAULT WITHOUT THE REQUIRED FIRE WRAPS ON THE | | RACEWAYS CONTAINING THE CABLES. ONE OF THE CABLES (32513D) FEEDS THE | | UNDERVOLTAGE TRIP CIRCUIT FOR ISOLATION BREAKER MOTOR CONTROL CENTER (MCC) | | 3B314. THE OTHER CABLE (30799F) FEEDS THE CCW SURGE TANK LEVEL INTERLOCK | | CIRCUIT FOR DRY COOLING TOWER B ISOLATION VALVE 3CC-B203B AND BYPASS VALVE | | 3CC-B262B. THE CABLES HAVE BEEN REPAIRED UNDER THE FIRE PROTECTION PROGRAM | | AND COMPENSATORY ACTIONS HAVE BEEN INITIATED (1 HOUR FIRE WATCHES). THERE | | IS NO PRESENT IMPACT ON THE HEALTH AND SAFETY OF THE PUBLIC." | | | | MCC 3B314 FEEDS FUEL POOL PUMP B, FUEL HANDLING BUILDING VENTILATION | | EXHAUST FAN, FILTRATION TRAIN B AND DRY COOLING TOWER SUMP PUMPS ON THE B | | SIDE. THE LICENSEE DISCOVERED THIS CONDITION WHILE RELOCATING SOME CABLES. | | THE LICENSEE WILL INFORM THE NRC RESIDENT INSPECTOR. | +------------------------------------------------------------------------------+