U.S. Nuclear Regulatory Commission Operations Center Event Reports For 04/01/96 - 04/02/96 ** EVENT NUMBERS ** 30211 30212 30213 30214 30215 30216 30217 +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 30211 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: DRESDEN REGION: 3 |NOTIFICATION DATE: 04/01/96 | |UNIT: [1] [2] [3] STATE: IL |NOTIFICATION TIME: 11:55 [ET]| |RX TYPE: [1] GE-1,[2] GE-3,[3] GE-3 |EVENT DATE: 03/31/96 | +------------------------------------------------+EVENT TIME: 23:51[CST]| |NRC NOTIFIED BY: ROBERT BROWN |LAST UPDATE DATE: 04/01/96 | |HQ OPS OFFICER: LEIGH TROCINE +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |GARY SHEAR RDO | |HFIT 26.73 FITNESS FOR DUTY | | | | | | | | | | | | | | +-----+----------+-------+--------+--------------+--+--------+-----------------+ |UNIT |SCRAM CODE|RX CRIT|INIT PWR| INIT RX MODE |CURR PWR| CURR RX MODE | +-----+----------+-------+--------+-----------------+--------+-----------------+ | 1 | N N 0 DECOMMISSIONED | 0 DECOMMISSIONED | | 2 | N N 0 COLD SHUTDOWN | 0 COLD SHUTDOWN | | 3 | N Y 94 POWER OPERATION | 94 POWER OPERATION | +-----+---------------------------------------------+--------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | A LICENSEE SUPERVISOR TESTED POSITIVE FOR ALCOHOL DURING A FOR-CAUSE | | FITNESS-FOR-DUTY TEST | | | | A FOR-CAUSE FITNESS-FOR-DUTY TEST WAS PERFORMED ON A LICENSEE RADWASTE | | SUPERVISOR DUE TO A DETECTED ODOR OF ALCOHOL, AND THE TEST RESULTS WERE | | DETERMINED TO BE POSITIVE FOR ALCOHOL. THE INDIVIDUAL WAS DENIED | | UNESCORTED ACCESS AT THE TIME OF THE TEST AND WILL REMAIN IN THIS STATUS | | PENDING AN INTERVIEW WITH A MEDICAL REVIEW OFFICER AND THE ESTABLISHMENT OF | | ANY TREATMENT. | | | | THE LICENSEE NOTIFIED THE NRC RESIDENT INSPECTOR AND THE NRC REGION 3 | | OFFICE (MADEDA). (REFER TO THE HOO LOG FOR A SITE CONTACT TELEPHONE | | NUMBER.) | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |OTHER NUCLEAR MATERIAL | |EVENT NUMBER: 30212 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |LICENSEE: MIAMI UNIVERSITY OF OHIO |NOTIFICATION DATE: 04/01/96 | | CITY: OXFORD REGION: 3 |NOTIFICATION TIME: 14:16 [ET]| | COUNTY: BUTLER STATE: OH |EVENT DATE: 02/27/96 | |LICENSE#: 34-01329-07 AGREEMENT: N |EVENT TIME: 09:30[EST]| | DOCKET: |LAST UPDATE DATE: 04/01/96 | | +-----------------------------+ | |PERSON ORGANIZATION| | |GARY SHEAR, R3DO RDO | | | | +------------------------------------------------+HAROLD GRAY, R1DO RDO | |NRC NOTIFIED BY: DAVID COONS | | |HQ OPS OFFICER: LEIGH TROCINE | | +------------------------------------------------+ | |EMERGENCY CLASS: NOT APPLICABLE | | |10 CFR SECTION: | | |BAB2 20.2201(a)(1)(ii) LOST/STOLEN LNM>10X | | | | | | | | | | | | | | +------------------------------------------------+-----------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | UNINTENTIONAL SHIPMENT OF 578 MICROCURIES OF P-32 FROM MIAMI UNIVERSITY OF | | OHIO, OXFORD, OHIO, TO DUPONT NEW ENGLAND NUCLEAR, BOSTON, MASSACHUSETTS | | | | DUPONT NEW ENGLAND NUCLEAR, BOSTON, MASSACHUSETTS, SHIPPED A PACKAGE | | CONTAINING P-32 INSIDE A LIGHTWEIGHT PLASTIC PIG TO MIAMI UNIVERSITY OF | | OHIO (LICENSEE), OXFORD, OHIO. DUPONT NEW ENGLAND NUCLEAR ALSO REQUESTED | | THE LICENSEE TO RECYCLE OR RETURN THE INTERNAL PACKAGE FOR REUSE. (A | | FEBRUARY 21, 1996, ASSAY INDICATED THAT THE ACTIVITY OF THE P-32 INSIDE THE | | PIG WAS 578 MICROCURIES.) THE LICENSEE OPENED THE PACKAGE, AND WIPE TESTED | | IT TO ENSURE THAT THERE WAS NO REMOVABLE CONTAMINATION. THE PIG CONTAINING | | THE ISOTOPE WAS NOT TAKEN OUT OF THE DRY ICE. APPARENTLY, THERE WAS A | | MISCOMMUNICATION, AND THE PACKAGE WAS RESEALED AND RELABELLED FOR SHIPMENT | | BACK TO DUPONT NEW ENGLAND NUCLEAR. THE DOSE RATE AT THE SURFACE OF THE | | BOX WAS 0.19 MILLIREM PER HOUR (EXEMPT RADIOACTIVE MATERIAL). | | | | THE PACKAGE WAS TAKEN TO THE UNIVERSITY MAIL ROOM ON FEBRUARY 21, 1996, AND | | IT WAS PROBABLY MAILED OUT ON FEBRUARY 22 OR 23, 1996. THE UNINTENTIONAL | | SHIPMENT OF THIS MATERIAL WAS IDENTIFIED AT 0930 ON FEBRUARY 27, 1996. | | APPARENTLY, THE PACKAGE WAS SENT TO A U.S. POSTAL SERVICE POSTAGE DUE UNIT | | LOCATED IN PUTNAM, CONNECTICUT, AND IT HAS NOT YET BEEN RECEIVED BY DUPONT | | NEW ENGLAND NUCLEAR. | | | | THE NORMAL PROCEDURE FOR THE POSTAL SERVICE IS TO SHAKE THE PACKAGE TO SEE | | IF ANYTHING IS IN IT AND THEN TO STORE IT ON A PALLET. WHEN ENOUGH | | MATERIAL IS ON THE PALLET, THE POSTAL SERVICE SHRINK WRAPS IT FOR SHIPMENT | | BACK TO DUPONT NEW ENGLAND NUCLEAR. | | | | THE LICENSEE HAS BEEN IN CONTACT WITH A DUPONT NEW ENGLAND NUCLEAR | | REPRESENTATIVE (BILL THISTLE) ON A DAILY BASIS TO TRY TO IDENTIFY THE | | LOCATION OF THE PACKAGE. THE LICENSEE CURRENTLY BELIEVES THAT THE PACKAGE | | MAY BE ON A PALLET AT THE U.S. POSTAL SERVICE POSTAGE DUE UNIT IN PUTNAM, | | CONNECTICUT. (REFER TO THE HOO LOG FOR CONTACT ADDRESSES AND TELEPHONE | | NUMBERS.) | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 30213 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: WATERFORD REGION: 4 |NOTIFICATION DATE: 04/01/96 | |UNIT: [3] [ ] [ ] STATE: LA |NOTIFICATION TIME: 14:21 [ET]| |RX TYPE: [3] CE |EVENT DATE: 04/01/96 | +------------------------------------------------+EVENT TIME: 12:58[CST]| |NRC NOTIFIED BY: DARYL CORNETT |LAST UPDATE DATE: 04/01/96 | |HQ OPS OFFICER: LEIGH TROCINE +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: UNUSUAL EVENT +-----------------------------+ |10 CFR SECTION: |TOM STETKA RDO | |AAEC 50.72(a)(1)(i) EMERGENCY DECLARED |ED GOODWIN, NRR EO | | |BERNIE WITSBERGER FEMA | | | | | | | | | | +-----+----------+-------+--------+--------------+--+--------+-----------------+ |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 +------------------------------------------------------------------------------+ | UNUSUAL EVENT DECLARED DUE TO A TOXIC CHEMICAL EMERGENCY AT NEARBY FACILITY | | | | AT 1258 CST, THE LICENSEE DECLARED AN UNUSUAL EVENT DUE TO NOTIFICATION OF | | A TOXIC CHEMICAL EMERGENCY (XYLENE FIRE) AT SHELL-WHITCO. (SHELL-WHITCO IS | | A FACILITY LOCATED APPROXIMATELY 1.1 MILES SOUTH-SOUTHEAST OF WATERFORD | | UNIT 3.) AS A PRECAUTIONARY MEASURE, THE LICENSEE ISOLATED ALL OF THE | | VENTILATION TO THE REACTOR AUXILIARY AND FUEL HANDLING BUILDINGS AND PLACED | | THE CONTROL ROOM IN RECIRCULATION. THE WIND WAS BLOWING AWAY FROM THE | | PLANT (FROM THE NORTH-NORTHWEST), AND NO PROTECTIVE ACTIONS WERE TAKEN. THE | | LICENSEE PLANS TO TERMINATE THE UNUSUAL EVENT WHEN THE TOXIC CHEMICAL | | EMERGENCY AT SHELL-WHITCO IS TERMINATED. | | | | THE LICENSEE NOTIFIED THE ST. CHARLES AND ST. JOHNS PARISHES, THE LOUISIANA | | OFFICE OF ENVIRONMENTAL PROTECTION, THE LOUISIANA RADIATION PROTECTION | | DIVISION, WATERFORD UNITS 1 AND 2, AND THE NRC RESIDENT INSPECTOR. | | | | * * * 1538 APRIL 1, 1996, UPDATE FROM CORNETT RECEIVED BY TROCINE * * * | | | | THE LICENSEE TERMINATED THE UNUSUAL EVENT AT 1428 CST DUE TO THE | | TERMINATION OF THE TOXIC CHEMICAL EMERGENCY AT SHELL-WHITCO. OPERATORS ARE | | CURRENTLY RESTORING ALL OF THE VENTILATION SYSTEMS TO THE NORMAL LINEUP AND | | IS ALSO TAKING THE CONTROL ROOM OUT OF RECIRCULATION. | | | | THE LICENSEE NOTIFIED THE ST. CHARLES AND ST. JOHNS PARISHES, THE LOUISIANA | | OFFICE OF ENVIRONMENTAL PROTECTION, THE LOUISIANA RADIATION PROTECTION | | DIVISION, WATERFORD UNITS 1 AND 2, AND THE NRC RESIDENT INSPECTOR. THE NRC | | OPERATIONS OFFICER NOTIFIED THE R4DO (STETKA), NRR EO (GOODWIN), AND FEMA | | (WITSBERGER). | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |OTHER NUCLEAR MATERIAL | |EVENT NUMBER: 30214 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |LICENSEE: DUKE UNIVERSITY |NOTIFICATION DATE: 04/01/96 | | CITY: DURHAM REGION: 2 |NOTIFICATION TIME: 14:43 [ET]| | COUNTY: STATE: NC |EVENT DATE: 04/01/96 | |LICENSE#: 032-02474 AGREEMENT: Y |EVENT TIME: 14:18[EST]| | DOCKET: |LAST UPDATE DATE: 04/01/96 | | +-----------------------------+ | |PERSON ORGANIZATION| | |GEORGE AL BELISLE RDO | | | | +------------------------------------------------+ | |NRC NOTIFIED BY: SHARN JEFFRIES (NC) | | |HQ OPS OFFICER: LEIGH TROCINE | | +------------------------------------------------+ | |EMERGENCY CLASS: NOT APPLICABLE | | |10 CFR SECTION: | | |NAGR AGREEMENT STATE | | | | | | | | | | | | | | +------------------------------------------------+-----------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | STATE OF NORTH CAROLINA REPORT OF A LOST 7.6 MILLICURIE, IODINE-125, SEALED | | SOURCE AT DUKE UNIVERSITY IN DURHAM, NORTH CAROLINA | | | | AT 1418 ON APRIL 1, 1996, THE STATE OF NORTH CAROLINA RECEIVED NOTIFICATION | | FROM DUKE UNIVERSITY THAT A 7.6 MILLICURIE, IODINE-125, SEALED SOURCE HAD | | BEEN LOST. THE SOURCE WAS A MOTION CORRECTION POINT SOURCE THAT HAD BEEN | | TAPED TO AN INDIVIDUAL, AND THE TAPE COVERED UP THE SOURCE'S RADIATION | | SYMBOL. WHEN THE TAPE WAS REMOVED, THE SOURCE WAS APPARENTLY THROWN AWAY | | WITH THE TAPE. IT HAS BEEN MISSING SINCE MARCH 29, 1996, AND THE DUKE | | UNIVERSITY RADIATION SAFETY OFFICER (DR. CARMINE PLOTT) WAS NOTIFIED ON | | APRIL 1, 1996. THE LICENSEE BELIEVES THAT THE SOURCE MAY STILL BE IN A | | DUMPSTER AND IS CURRENTLY CONDUCTING A SEARCH OF THE DUMPSTERS. THE | | LICENSEE BELIEVES THAT THERE IS LITTLE RISK TO THE PUBLIC. | | | | (REFER TO THE HOO LOG FOR THE STATE OF NORTH CAROLINA CONTACT'S TELEPHONE | | NUMBER.) | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 30215 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: OYSTER CREEK REGION: 1 |NOTIFICATION DATE: 04/01/96 | |UNIT: [1] [ ] [ ] STATE: NJ |NOTIFICATION TIME: 16:51 [ET]| |RX TYPE: [1] GE-2 |EVENT DATE: 04/01/96 | +------------------------------------------------+EVENT TIME: 13:00[EST]| |NRC NOTIFIED BY: DAVID PIETRUSKI |LAST UPDATE DATE: 04/01/96 | |HQ OPS OFFICER: LEIGH TROCINE +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |HAROLD GRAY RDO | |NLTR LICENSEE 24 HR REPORT | | | | | | | | | | | | | | +-----+----------+-------+--------+--------------+--+--------+-----------------+ |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 THAT THE 25% TECHNICAL SPECIFICATION ALLOWABLE EXTENSION TIME FOR | | TWO 18 MONTH SURVEILLANCES WAS EXCEEDED DURING THE LAST UNIT RUN CYCLE | | (PRIOR TO DECEMBER, 1994) | | | | DURING A REVIEW OF DOCUMENTATION ON COMPLETED SURVEILLANCES, IT WAS | | DISCOVERED THAT THE 25% TECHNICAL SPECIFICATION ALLOWABLE EXTENSION TIME | | FOR TWO 18 MONTH SURVEILLANCES WAS EXCEEDED DURING THE LAST RUN CYCLE | | (BETWEEN REFUELING OUTAGES #14R AND #15R). (THE #15R REFUELING OUTAGE WAS | | COMPLETED IN DECEMBER, 1994.) THE TWO PROCEDURES THAT WERE IDENTIFIED AS | | EXCEEDING THE 25% TECHNICAL SPECIFICATION ALLOWABLE EXTENSION TIME WERE | | PROCEDURE NUMBER 602.4.003, ELECTROMATIC RELIEF VALVE OPERABILITY TEST, AND | | PROCEDURE NUMBER 665.5.002, SECONDARY CONTAINMENT LEAK RATE TEST. BOTH OF | | THESE 18 MONTH SURVEILLANCES WERE SATISFACTORILY PERFORMED DURING REFUELING | | OUTAGE #15R. | | | | THE LICENSEE IS STILL REVIEWING SURVEILLANCE RELATED DOCUMENTATION AND MAY | | FIND ADDITIONAL EXAMPLES OF THIS PROBLEM. ADDITIONAL EXAMPLES WILL BE | | DOCUMENTED IN THE LICENSEE EVENT REPORT FOR THE TWO EXAMPLES REFERENCED IN | | THIS NOTIFICATION. | | | | THE LICENSEE PLANS TO NOTIFY THE NRC RESIDENT INSPECTOR. | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 30216 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: MILLSTONE REGION: 1 |NOTIFICATION DATE: 04/01/96 | |UNIT: [ ] [2] [ ] STATE: CT |NOTIFICATION TIME: 18:05 [ET]| |RX TYPE: [1] GE-3,[2] CE,[3] W-4-LP |EVENT DATE: 04/01/96 | +------------------------------------------------+EVENT TIME: 17:57[EST]| |NRC NOTIFIED BY: WILLIAM E. STRONG, III |LAST UPDATE DATE: 04/01/96 | |HQ OPS OFFICER: LEIGH TROCINE +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |HAROLD GRAY RDO | |ADAS 50.72(b)(2)(i) DEG/UNANALYZED COND | | |NLCO TECH SPEC LCO A/S | | | | | | | | | | | +-----+----------+-------+--------+--------------+--+--------+-----------------+ |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 +------------------------------------------------------------------------------+ | POSTULATED LOSS OF REACTOR BUILDING CLOSED COOLING WATER THROUGH THE | | PRIMARY MAKEUP WATER SYSTEM DURING A POSTULATED LOSS OF COOLANT ACCIDENT OR | | SEISMIC EVENT COINCIDENT WITH A LOSS OF NORMAL POWER (THIS POSTULATED LOSS | | COULD ALSO RESULT IN THE LOSS OF SHUTDOWN COOLING.) | | | | DURING AN ONGOING REACTOR BUILDING CLOSED COOLING WATER (RBCCW) DESIGN | | REVIEW, LICENSEE ENGINEERING PERSONNEL IDENTIFIED A POSTULATED SCENARIO IN | | WHICH A LOSS OF COOLANT ACCIDENT OR SEISMIC EVENT COINCIDENT WITH A LOSS OF | | NORMAL POWER COULD RESULT IN THE LOSS OF RBCCW THROUGH PRIMARY MAKEUP WATER | | (PMW) SYSTEM MAKEUP VALVE #2RB215 BACK TO THE PMW STORAGE TANK. THIS VALVE | | NORMALLY SUPPLIES WATER FROM THE PMW SYSTEM TO THE RBCCW SYSTEM. | | | | APPARENTLY, THE LICENSEE CANNOT TAKE CREDIT FOR THE CHECK VALVES IN THIS | | LINE BECAUSE THEY ARE NOT SAFETY RELATED AND ARE NOT TESTED. IF THERE WAS | | A LOSS OF NORMAL POWER COINCIDENT WITH A LOSS OF COOLANT ACCIDENT OR | | SEISMIC EVENT, THE UNIT WOULD LOOSE POWER TO THE PMW PUMPS, SO THERE WOULD | | BE NO PMW SYSTEM PRESSURE. IN ADDITION, WITH NO OPERATOR ACTIONS TAKEN, | | PMW SYSTEM MAKEUP VALVE #2RB215 WOULD FAIL OPEN DUE TO A LOSS OF INSTRUMENT | | AIR. THEREFORE, THE RBCCW PUMPS WOULD THEN PUMP RBCCW THROUGH THE | | RECIRCULATION LINES WHICH TIE INTO THE MAKEUP LINE AND WOULD EMPTY THE | | RBCCW SYSTEM BACK INTO THE PMW SYSTEM AND SUBSEQUENTLY INTO THE PMW STORAGE | | TANK. | | | | THE LICENSEE HAS TAKEN ACTION TO CLOSE MANUAL VALVES IN THE PMW SYSTEM LINE | | THAT GOES TO THE RBCCW SYSTEM. IN ADDITION, THE LICENSEE IS CURRENTLY | | PERFORMING TESTING ON THE MANUAL ISOLATION VALVES THAT ARE INLINE WITH | | VALVE #2RB215 WHICH IS POSTULATED TO FAIL OPEN. IF THE TANK LEVEL DOES NOT | | INCREASE WHEN VALVE #2RB215 IS OPENED WITH THE DOWNSTREAM MANUAL ISOLATION | | VALVE FOR THE PMW SYSTEM CLOSED, THIS WOULD VERIFY ISOLATION CAPABILITIES | | AND WOULD PROVE THAT THERE WAS NO LEAKAGE. | | | | TECHNICAL SPECIFICATION 3.4.1.3.A, COOLANT LOOPS AND COOLANT CIRCULATION, | | REQUIRES THAT AT LEAST TWO SHUTDOWN COOLING LOOPS SHALL BE OPERABLE. | | BECAUSE THE POSTULATED LOSS OF RBCCW WOULD RESULT IN THE POSTULATED LOSS OF | | COOLING FOR THE SHUTDOWN COOLING SYSTEM, THE LICENSEE ENTERED THE ACTION | | STATEMENT OF THIS TECHNICAL SPECIFICATION FOR 15 MINUTES UNTIL THE MANUAL | | ISOLATION VALVES WERE CLOSED. | | | | THE LICENSEE NOTIFIED THE NRC RESIDENT INSPECTOR AND STATE AND LOCAL | | OFFICIALS. | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 30217 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: PALO VERDE REGION: 4 |NOTIFICATION DATE: 04/02/96 | |UNIT: [ ] [2] [ ] STATE: AZ |NOTIFICATION TIME: 02:58 [ET]| |RX TYPE: [1] CE,[2] CE,[3] CE |EVENT DATE: 04/01/96 | +------------------------------------------------+EVENT TIME: 22:36[MST]| |NRC NOTIFIED BY: BERT GRABO |LAST UPDATE DATE: 04/02/96 | |HQ OPS OFFICER: DICK JOLLIFFE +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |TOM STETKA 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 +------------------------------------------------------------------------------+ | - LOSS OF SHUTDOWN COOLING FOR 45 SECONDS DUE TO PERSONNEL ERROR - | | | | UNIT 2 IS IN MODE 6 IN THE SIXTH REFUELING OUTAGE WITH THE CORE COMPLETELY | | OFFLOADED TO THE SPENT FUEL POOL WITH THE EXCEPTION OF FUEL ASSEMBLY #A-O7 | | WHICH IS LODGED IN PLACE. | | | | FOLLOWING MAINTENANCE ACTIVITIES, A CONTROL ROOM OPERATOR WAS RESTORING | | POWER TO THE NON-CLASS 1E 4160 VAC BUS #NBN-S02. THE CONTROL ROOM OPERATOR | | CLOSED THE ALTERNATE AC POWER SUPPLY BREAKER (#PBB-HS-SO4L) TO CLASS 1E | | 4160 VAC BUS #PBB-SO4 INSTEAD OF THE NORMAL AC POWER SUPPLY BREAKER | | (#NBN-HS-S02A) TO NON-CLASS 1E 4160 VAC BUS #NBN-S02. THIS CAUSED THE | | NORMAL AC POWER SUPPLY BREAKER (#PBB-HS-S04K) TO CLASS 1E 4160 VAC BUS | | #PBB-S04 TO OPEN SINCE BREAKERS #PBB-HS-SO4K & L ARE INTERLOCKED. | | BREAKERS #PBB-HS-SO4L AND #NBN-HS-SO2A ARE LOCATED ADJACENT TO EACH OTHER, | | APPROXIMATELY 4 INCHES APART. | | | | AT 2236 (MST), THE CONTROL ROOM OPERATOR REOPENED BREAKER #PBB-HS-S04L | | BASED ON INFORMATION RECEIVED FROM AN AUXILIARY OPERATOR IN THE FIELD. | | THIS DEENERGIZED BUS #PBB-SO4, CAUSING A LOSS OF POWER TO THE CLASS 1E | | 4160 VAC SYSTEM, TRAIN 'B'. THE TRAIN 'A' SYSTEM WAS INOPERABLE FOR | | MAINTENANCE ACTIVITIES DURING THE REFUELING OUTAGE. | | | | THE OPERATING SHUTDOWN COOLING PUMP TRIPPED DUE TO THE LOSS OF POWER TO BUS | | #PBB-S04. THE TRAIN 'B' EDG STARTED AND SUPPLIED 4160 VAC POWER TO BUS | | #PBB-S04. CONTROL ROOM OPERATORS MANUALLY RESTARTED THE SHUTDOWN COOLING | | PUMP APPROXIMATELY 45 SECONDS LATER, AFTER THE 'B' EDG STARTED. | | | | AT 2254 (MST), CONTROL ROOM OPERATORS RESTORED ALL SYSTEMS TO NORMAL. | | THERE WAS NO DETECTABLE REACTOR COOLANT SYSTEM TEMPERATURE INCREASE DURING | | THIS SHORT PERIOD OF TIME SINCE DECAY HEAT FROM THE SOLE FUEL BUNDLE IN THE | | CORE IS MINIMAL. | | | | LICENSEE IS INVESTIGATING THE CAUSE OF THIS PERSONNEL ERROR. | | | | THE LICENSEE INFORMED THE NRC RESIDENT INSPECTOR. | +------------------------------------------------------------------------------+