U.S. Nuclear Regulatory Commission Operations Center Event Reports For 01/23/97 - 01/24/97 ** EVENT NUMBERS ** 31619 31633 31638 31639 31640 31641 31642 31643 31644 31645 +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 31619 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: WATERFORD REGION: 4 |NOTIFICATION DATE: 01/18/97 | |UNIT: [3] [ ] [ ] STATE: LA |NOTIFICATION TIME: 06:12 [ET]| |RX TYPE: [3] CE |EVENT DATE: 01/18/97 | +------------------------------------------------+EVENT TIME: 04:20[CST]| |NRC NOTIFIED BY: WESLEY |LAST UPDATE DATE: 01/23/97 | |HQ OPS OFFICER: STEVE SANDIN +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: ALERT +-----------------------------+ |10 CFR SECTION: |JOSEPH TAPIA RDO | |AAEC 50.72(a)(1)(i) EMERGENCY DECLARED |WILLIAM BECKNER EO | | |RICHARD BARRETT IRD | | |HENRY BAILEY RCT | | |JOE CALLAN RA | | |FRANK MIRAGLIA NRR | +-----+----------+-------+--------+--------------+--+--------+-----------------+ |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 +------------------------------------------------------------------------------+ | DECLARATION OF AN ALERT DUE TO A TOXIC CHEMICAL SPILL APPROXIMATELY TEN | | MILES NORTH OF THE SITE ON THE MISSISSIPPI RIVER. | | | | AT APPROXIMATELY 0145 CST, A TANKER CARRYING PYROLYSIS GASOLINE (MAJOR | | COMPONENT BENZENE) RAN AGROUND ON THE MISSISSIPPI RIVER IN THE ST. JOHN | | PARISH BY GARYVILLE, LA. THE LICENSEE WAS NOTIFIED AT 0420 CST, AT WHICH | | TIME THEY DECLARED AN ALERT BASED ON INITIATING CONDITION EP-4-010, TOXIC | | CHEMICAL RELEASE. AS A PRECAUTIONARY MEASURE, THE CONTROL ROOM AIR INTAKE | | WAS ISOLATED AND ONSITE PERSONNEL SHELTERED. THE INITIAL ESTIMATE FROM THE | | COAST GUARD WAS THAT APPROXIMATELY 250,000 GALLONS HAD BEEN RELEASED. | | HOWEVER, THIS QUANTITY WAS LATER REDUCED TO 100,000 GALLONS. THE LICENSEE | | ESTIMATED THAT THE RIVER BORNE SPILL WOULD HAVE REACHED THE SITE BY ABOUT | | 0400 CST, AND DUE TO THE DISTANCE TRAVELLED AND RELATIVELY SMALL QUANTITY | | INVOLVED, IT WOULD POSE NO THREAT TO THE 1,000,000 GALLON/MINUTE INTAKE | | FLOW. THERE WERE NO ILL EFFECTS OBSERVED ONSITE. | | | | THE COAST GUARD WAS RESPONDING AT THE TIME OF THIS NOTIFICATION. THE | | LICENSEE ACTIVATED ERDS WITHIN THE REQUIRED ONE-HOUR OF DECLARING AN ALERT. | | THE LICENSEE INFORMED STATE AND LOCAL AGENCIES AND PLANS TO INFORM THE NRC | | RESIDENT INSPECTOR. | | | | A CONFERENCE BRIDGE BETWEEN THE LICENSEE AND NRC {R4DO (TAPIA), NRR EO | | (BECKNER), AEOD IRD (BARRETT), RCT (BAILEY), NRR ET (MIRAGLIA), RA | | (CALLAN), AND DEPUTY RA (DWYER)} WAS ESTABLISHED. THE NRC DECISION WAS TO | | REMAIN IN NORMAL MODE BASED UPON THE CURRENT INFORMATION. | | | | * * * UPDATE 0721 EST 01/18/97, FROM WESLEY TO S. SANDIN * * * | | | | THE LICENSEE DOWNGRADED THE ALERT TO AN UNUSUAL EVENT AT 0604 CST BASED | | UPON A COAST GUARD ASSESSMENT OF CURRENT CONDITIONS. | | | | THE LICENSEE INFORMED STATE AND LOCAL AGENCIES AND PLANS TO INFORM THE NRC | | RESIDENT INSPECTOR. THE NRC OPERATIONS CENTER NOTIFIED THE R4DO (TAPIA), | | NRR EO (BECKNER), AEOD IRD (BARRETT), AND HEADQUARTERS PAO (DRICKS). THE | | FOLLOWING FEDERAL AGENCIES WERE ALSO NOTIFIED: DOE (JOHNSON AND MOORE), | | EPA AND DOT (BRIGHT), USDA (BICKERTON), HHS (DAVIS), AND FEMA (RISHE). | | | | * * * UPDATE 0825 EST 01/18/97, FROM RODRIQUE TO S. SANDIN * * * | | | | THE LICENSEE TERMINATED THE UNUSUAL EVENT AT 0713 CST BASED UPON THE SPILL | | HAVING PAST THE SITE. IT IS NO LONGER A HAZARD. | | | | THE LICENSEE WILL PROBABLY ISSUE A PRESS RELEASE. THE LICENSEE INFORMED | | STATE AND LOCAL AGENCIES AND THE NRC RESIDENT INSPECTOR. THE NRC | | OPERATIONS CENTER NOTIFIED THE R4DO (TAPIA), NRR EO (BECKNER), AND FEMA | | (BAGWELL). | | | | HOO NOTE: THE R4DO (TAPIA) AND NRR EO (BECKNER) AGREED THAT A COMMISSIONER | | ASSISTANTS' BRIEFING WAS NOT REQUIRED. | | | | * * * 1712 JANUARY 23, 1997, UPDATE FROM MATTHEWS RECEIVED BY TROCINE * * * | | | | THE LICENSEE PROVIDED THIS UPDATE TO CORRECT THE QUANTITY OF MATERIAL | | RELEASED. THE ACTUAL QUANTITY WAS DETERMINED TO BE 6,000 GALLONS IN LIEU | | OF 100,000 GALLONS. | | | | THE LICENSEE NOTIFIED THE NRC RESIDENT INSPECTOR AND DOES NOT PLAN TO | | NOTIFY THE STATE AND LOCAL AGENCIES. THE NRC OPERATIONS CENTER NOTIFIED | | THE R4DO (SPITZBERG), NRR EO (CAPRA), AEOD IRD (CONGEL), DOE (DUNCAN), EPA | | AND DOT (RUTHERFORD), USDA (BICKERTON), HHS (RABB), AND FEMA (DEPUY). | +------------------------------------------------------------------------------+ !!!!!!!!! THIS EVENT HAS BEEN RETRACTED. THIS EVENT HAS BEEN RETRACTED !!!!!!! +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 31633 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: HARRIS REGION: 2 |NOTIFICATION DATE: 01/22/97 | |UNIT: [1] [ ] [ ] STATE: NC |NOTIFICATION TIME: 14:25 [ET]| |RX TYPE: [1] W-3-LP |EVENT DATE: 01/22/97 | +------------------------------------------------+EVENT TIME: 13:25[EST]| |NRC NOTIFIED BY: KEN PACE |LAST UPDATE DATE: 01/23/97 | |HQ OPS OFFICER: JOHN MacKINNON +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: UNUSUAL EVENT +-----------------------------+ |10 CFR SECTION: |TOM PEEBLES RDO | |AAEC 50.72(a)(1)(i) EMERGENCY DECLARED |BOB CAPRA, NRR EO | |DDDD 73.71 UNSPECIFIED PARAGRAPH |LOREN BUSH, NRR IAT | | |JOHN DAVIDSON, NMSS NMSS | | |FRANK CONGEL, IRD AEOD | | |CHUCK DEPUY FEMA | +-----+----------+-------+--------+--------------+--+--------+-----------------+ |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 +------------------------------------------------------------------------------+ | SECURITY EVENT DUE TO POTENTIAL TAMPERING/VANDALISM OF NON-SAFETY RELATED | | EQUIPMENT. IMMEDIATE COMPENSATORY MEASURES WERE TAKEN UPON DISCOVERY. THE | | LICENSEE NOTIFIED THE NRC RESIDENT INSPECTOR OF THIS EVENT. (REFER TO THE | | HOO LOG BOOK FOR FURTHER DETAILS.) | | | | * * * UPDATE @ 1608 EST ON 01/22/97, FROM KEN PACE TAKEN BY MACKINNON * * * | | THE LICENSEE ENTERED A SECURITY ALERT STATUS AT 1400 EST, AND THE LICENSEE | | ENTERED AN UNUSUAL EVENT CLASSIFICATION AT 1505 EST. THE LICENSEE SECURED | | THE SECURITY ALERT AT 1522 EST. THE NRC RESIDENT INSPECTOR WAS NOTIFIED BY | | THE LICENSEE. THE R2DO (PEEBLES), NRR EO (CAPRA), AEOD IRD (CONGEL), FEMA | | (DEPUY), NRR IAT (BUSH), AND NMSS IAT (WARREN) WERE NOTIFIED BY THE HOO. | | | | * * * UPDATE @ 1624 EST ON 01/22/97, FROM KEN PACE TAKEN BY MACKINNON * * * | | THE UNUSUAL EVENT WAS TERMINATED AT 1610 EST. SUBSEQUENT INVESTIGATION | | SUGGESTS THAT THE PROBLEM MAY HAVE OCCURRED DURING EARLIER MAINTENANCE | | ACTIVITY. THE NRC RESIDENT INSPECTOR WAS NOTIFIED BY THE LICENSEE. THE | | R2DO (FREDRICKSON), NRR EO (CAPRA), AEOD IRD (CONGEL), FEMA (DEPUY), NMSS | | IAT (WARREN), AND NRR IAT (BUSH) WERE NOTIFIED BY THE HOO. | | | | * * * UPDATE @ 1613 EST ON 01/23/97, FROM PACE RECEIVED BY TROCINE * * * | | THE LICENSEE IS RETRACTING THIS EVENT NOTIFICATION BASED UPON THE | | DETERMINATION THAT THE EVENT WAS NOT A TAMPERING PROBLEM AND THAT IT WAS | | NOT NECESSARY TO ENTER THE SECURITY ALERT. (REFER TO THE HOO LOG FOR | | ADDITIONAL DETAILS.) THE LICENSEE NOTIFIED THE NRC RESIDENT INSPECTOR. THE | | NRC OPERATIONS CENTER NOTIFIED THE R2DO (FREDRICKSON), NRR EO (CAPRA), AEOD | | IRD (CONGEL), NMSS IAT (WARREN), AND NRR IAT (BUSH). | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 31638 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: WASHINGTON NUCLEAR REGION: 4 |NOTIFICATION DATE: 01/23/97 | |UNIT: [2] [ ] [ ] STATE: WA |NOTIFICATION TIME: 08:20 [ET]| |RX TYPE: [2] GE-5 |EVENT DATE: 01/23/97 | +------------------------------------------------+EVENT TIME: 04:35[PST]| |NRC NOTIFIED BY: J. SIMS |LAST UPDATE DATE: 01/23/97 | |HQ OPS OFFICER: BOB STRANSKY +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |SPITZBERG RDO | |ACNC 50.72(b)(1)(ii)(C) COND OUTSIDE EOPS | | | | | | | | | | | | | | +-----+----------+-------+--------+--------------+--+--------+-----------------+ |UNIT |SCRAM CODE|RX CRIT|INIT PWR| INIT RX MODE |CURR PWR| CURR RX MODE | +-----+----------+-------+--------+-----------------+--------+-----------------+ | 2 | N Y 68 POWER OPERATION | 68 POWER OPERATION | | | | | | | | | +-----+---------------------------------------------+--------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | LOSS OF PRIMARY CONTAINMENT DURING OPERATION | | | | WHILE RESTORING THE VALVE LINEUP FOLLOWING MAINTENANCE ON THE CONTAINMENT | | ATMOSPHERIC CONTROL (CAC) 'B' SUBSYSTEM, THE LICENSEE DISCOVERED THAT A | | VALVE THAT HAD BEEN DANGER TAGGED CLOSED WAS ACTUALLY FULLY OPEN. THIS | | CONFIGURATION RESULTED IN A LOSS OF PRIMARY CONTAINMENT INTEGRITY WHEN | | ANOTHER VALVE, WHICH WAS UNDERGOING MAINTENANCE, WAS CYCLED. THE LICENSEE | | STATED THAT THE MISPOSITIONED VALVE WAS OPENED AGAINST ITS BACK SEAT, AND | | THE MAINTENANCE TECHNICIANS MAY HAVE MISTAKEN THE VALVE HANDLE'S RESISTANCE | | TO MOVEMENT AS INDICATING FULL CLOSURE. | | | | THE NRC RESIDENT INSPECTOR WILL BE INFORMED BY THE LICENSEE. | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 31639 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: MILLSTONE REGION: 1 |NOTIFICATION DATE: 01/23/97 | |UNIT: [ ] [ ] [3] STATE: CT |NOTIFICATION TIME: 12:50 [ET]| |RX TYPE: [1] GE-3,[2] CE,[3] W-4-LP |EVENT DATE: 08/03/95 | +------------------------------------------------+EVENT TIME: 16:45[EST]| |NRC NOTIFIED BY: LOU PALONE |LAST UPDATE DATE: 01/23/97 | |HQ OPS OFFICER: LEIGH TROCINE +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |THOMAS MOSLAK 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 | +-----+----------+-------+--------+-----------------+--------+-----------------+ | | | | | | | | | 3 | N Y 100 POWER OPERATION | 0 COLD SHUTDOWN | +-----+---------------------------------------------+--------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | DISCOVERY THAT FOUR HIGH ENERGY LINE BREAK DOORS LOCATED IN THE AUXILIARY | | BUILDING WERE BLOCKED OPEN WHILE THE UNIT WAS OPERATING AT 100% POWER IN | | 1995 | | | | AT 1645 ON AUGUST 3, 1995, THE LICENSEE IDENTIFIED THAT FOUR AUXILIARY | | BUILDING FIRE DOORS HAD BEEN BLOCKED OPEN FOR WORK IN PROGRESS WHILE THE | | UNIT WAS OPERATING AT 100% POWER. IN ORDER TO SATISFY THE APPLICABLE FIRE | | PROTECTION REQUIREMENTS, CONTINUOUS FIRE WATCHES WERE SUBSEQUENTLY POSTED. | | HOWEVER, DURING AN INVESTIGATION THAT TERMINATED TODAY (JANUARY 23, 1997), | | THE LICENSEE IDENTIFIED THAT THESE DOORS WERE ALSO HIGH ENERGY LINE BREAK | | DOORS AND THAT THEY WOULD NOT HAVE PERFORMED THEIR INTENDED SAFETY FUNCTION | | WHILE THEY WERE BLOCKED OPEN ON AUGUST 3, 1995. THE DOORS WOULD HAVE BEEN | | ALLOWED TO BE OPENED FOR NORMAL PASSAGE ONLY, AND THE CONTINUOUS FIRE | | WATCHES WOULD NOT HAVE SATISFIED THE REQUIREMENTS FOR A POTENTIAL HIGH | | ENERGY LINE BREAK EVENT. | | | | THIS WAS NOT RECOGNIZED AT THE TIME OF THE EVENT. THE REPORTABILITY | | DETERMINATION WAS MADE AT 1236 ON JANUARY 23, 1997. THE THE DOORS ARE | | CLOSED AT THIS TIME, AND THE UNIT IS NOT CURRENTLY IN A TECHNICAL | | SPECIFICATION LIMITING CONDITION FOR OPERATION AS A RESULT OF THE DISCOVERY | | OF THIS HISTORICAL EVENT. | | | | THE LICENSEE HAS NOTIFIED THE NRC RESIDENT INSPECTOR AND THE STATE. | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 31640 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: INDIAN POINT REGION: 1 |NOTIFICATION DATE: 01/23/97 | |UNIT: [ ] [3] [ ] STATE: NY |NOTIFICATION TIME: 14:12 [ET]| |RX TYPE: [2] W-4-LP,[3] W-4-LP |EVENT DATE: 01/23/97 | +------------------------------------------------+EVENT TIME: 10:38[EST]| |NRC NOTIFIED BY: TOM WOOLEY |LAST UPDATE DATE: 01/23/97 | |HQ OPS OFFICER: LEIGH TROCINE +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |THOMAS MOSLAK 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 | +-----+----------+-------+--------+-----------------+--------+-----------------+ | | | | | 3 | N N 0 HOT SHUTDOWN | 0 HOT SHUTDOWN | | | | | +-----+---------------------------------------------+--------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | DISCOVERY THAT VAPOR CONTAINMENT ISOLATION VALVES FOR EACH OF THE TWO | | CONTAINMENT HYDROGEN SAMPLING UNITS WOULD BE SUSCEPTIBLE TO A SINGLE | | FAILURE IF OPEN AT THE TIME OF A DESIGN BASIS EVENT | | | | DURING PLANT SHUTDOWN ON JANUARY 23, 1997, ENGINEERING PERSONNEL DISCOVERED | | A CONDITION THAT POTENTIALLY COULD PLACE THE PLANT OUTSIDE ITS DESIGN BASIS | | IN THAT SINGLE FAILURE IS NOT ASSURED FOR SOME REDUNDANT CONTAINMENT | | ISOLATION VALVES. THE VAPOR CONTAINMENT ISOLATION VALVES FOR EACH OF THE | | TWO CONTAINMENT HYDROGEN SAMPLING UNITS ONLY HAVE ONE ISOLATION TRAIN | | SIGNAL FOR THE TWO VALVES IN SERIES AND WOULD BE SUSCEPTIBLE TO A SINGLE | | FAILURE IF OPEN AT THE TIME OF A DESIGN BASIS EVENT. (THIS PERTAINS TO A | | TOTAL OF ELEVEN VALVES ON NINE CONTAINMENT PENETRATIONS FOR POST-ACCIDENT | | CONTAINMENT SAMPLING SUPPLY AND RETURN LINES.) THE VALVES ARE SOLENOID | | OPERATED AND NORMALLY CLOSED. THEY ARE LOCATED ON ONE-INCH LINES AND ARE | | OPENED DURING TECHNICAL SPECIFICATION REQUIRED SURVEILLANCES ON THE | | HYDROGEN SAMPLE SYSTEM. ACCORDING TO THE FINAL SAFETY ANALYSIS REPORT, THE | | HYDROGEN SAMPLE UNITS ARE NOT CONSIDERED TO BE A CLOSED SYSTEM OUTSIDE | | CONTAINMENT BUT WOULD BE EXPECTED TO HAVE LIMITED LEAKAGE. FOR THIS | | POSTULATED EVENT, THE UNITS MAY NOT BE COMPLETELY LEAK TIGHT. THEREFORE, | | THE CONTROL ROOM MY BE VULNERABLE TO ADDITIONAL DOSE NOT EVALUATED PER | | GENERAL DESIGN CRITERION-19 REQUIREMENTS. | | | | CURRENTLY, THE PLANT IS PROCEEDING TO COLD SHUTDOWN FOR UNRELATED REASONS. | | OPERATIONS PERSONNEL PLAN TO ENSURE THAT THESE VALVES WILL BE MAINTAINED | | CLOSED UNTIL THIS CONDITION IS RESOLVED. | | | | THE LICENSEE NOTIFIED THE NRC RESIDENT INSPECTOR. | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 31641 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: MAINE YANKEE REGION: 1 |NOTIFICATION DATE: 01/23/97 | |UNIT: [1] [ ] [ ] STATE: ME |NOTIFICATION TIME: 15:24 [ET]| |RX TYPE: [1] CE |EVENT DATE: 01/23/97 | +------------------------------------------------+EVENT TIME: 14:20[EST]| |NRC NOTIFIED BY: WALTER JOHNSON |LAST UPDATE DATE: 01/23/97 | |HQ OPS OFFICER: LEIGH TROCINE +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |THOMAS MOSLAK 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 +------------------------------------------------------------------------------+ | DISCOVERY OF A POSSIBLE REACTOR COOLANT SYSTEM LOOP FILL HEADER | | MOTOR-OPERATED VALVE OVERPRESSURE SITUATION | | | | THE REACTOR COOLANT SYSTEM LOOP FILL HEADER MOTOR-OPERATED VALVES MUST BE | | OPENED AFTER A LOSS OF COOLANT ACCIDENT IN ORDER TO ALLOW HOT LEG | | INJECTION, AND TECHNICAL SPECIFICATIONS REQUIRE THESE VALVES TO BE OPERABLE | | FOR A HOT SHUTDOWN CONDITION OR HIGHER. THE UNIT IS CURRENTLY SHUT DOWN | | FOR THE PERFORMANCE OF FUEL INSPECTIONS. | | | | A DESIGN DISCREPANCY EVALUATION PRESENTED TO THE CONTROL ROOM AT 1420 | | IDENTIFIED THE POSSIBILITY THAT THERMAL EXPANSION OF THE FLUID IN THE | | PIPING FOLLOWING A LOSS OF COOLANT ACCIDENT COULD CAUSE AN OVERPRESSURE | | CONDITION THAT WOULD RENDER THESE VALVES INOPERABLE. THE SHORT-TERM | | CORRECTIVE ACTION FOR THIS SITUATION WOULD BE TO TAG ONE OF THESE FILL | | HEADER VALVES OPEN UNTIL RELIEF PROTECTION CAN BE INSTALLED. THE UNIT IS | | NOT IN A TECHNICAL SPECIFICATION LIMITING CONDITION FOR OPERATION AS A | | RESULT OF THIS ISSUE BECAUSE OF THE CURRENT MODE OF OPERATION (REFUELING). | | | | THE LICENSEE PLANS TO NOTIFY THE NRC RESIDENT INSPECTOR AND THE RESIDENT | | STATE INSPECTOR. | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 31642 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: MILLSTONE REGION: 1 |NOTIFICATION DATE: 01/23/97 | |UNIT: [ ] [ ] [3] STATE: CT |NOTIFICATION TIME: 16:29 [ET]| |RX TYPE: [1] GE-3,[2] CE,[3] W-4-LP |EVENT DATE: 01/23/97 | +------------------------------------------------+EVENT TIME: 16:10[EST]| |NRC NOTIFIED BY: JOSEPH R. FRANKS |LAST UPDATE DATE: 01/23/97 | |HQ OPS OFFICER: LEIGH TROCINE +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |THOMAS MOSLAK RDO | |AINA 50.72(b)(2)(iii)(A) POT UNABLE TO SAFE SD | | | | | | | | | | | | | | +-----+----------+-------+--------+--------------+--+--------+-----------------+ |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 +------------------------------------------------------------------------------+ | DISCOVERY THAT THE SHUTDOWN MARGIN CURVES FOR MODE 3 WERE NONCONSERVATIVE | | DURING THE PREVIOUS TWO OPERATING FUEL CYCLES | | | | THE LICENSEE DETERMINED THAT THE SHUTDOWN MARGIN CURVES FOR MODE 3 (ALL | | RODS INSERTED/NORMAL TEMPERATURE) WERE NONCONSERVATIVE DURING THE PREVIOUS | | TWO OPERATING FUEL CYCLES (CYCLE #5 AND CYCLE #6). BY REVIEWING PREVIOUS | | DATA, THE LICENSEE HAS VERIFIED THAT THE SHUTDOWN MARGIN DURING CYCLE #6 | | WAS ALWAYS MET, AND THE NONCONSERVATIVE PORTION OF THE CURVE WAS NOT USED. | | THE LICENSEE IS STILL IN THE PROCESS OF REVIEWING THE DATA FOR CYCLE #5 IN | | ORDER TO DETERMINE IF THE UNIT OPERATED IN THE NEWLY DISCOVERED AREA OF | | NONCONSERVATISM. | | | | THE UNIT IS NOT IN A TECHNICAL SPECIFICATION LIMITING CONDITION FOR | | OPERATION AS A RESULT OF THIS HISTORICAL ISSUE DUE TO THE CURRENT MODE OF | | OPERATION (COLD SHUTDOWN). | | | | THE LICENSEE HAS NOTIFIED THE NRC RESIDENT INSPECTOR AND THE APPLICABLE | | STATE AND LOCAL AUTHORITIES. | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 31643 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: SOUTH TEXAS REGION: 4 |NOTIFICATION DATE: 01/23/97 | |UNIT: [1] [2] [ ] STATE: TX |NOTIFICATION TIME: 17:42 [ET]| |RX TYPE: [1] W-4-LP,[2] W-4-LP |EVENT DATE: 01/23/97 | +------------------------------------------------+EVENT TIME: 16:05[CST]| |NRC NOTIFIED BY: HOWARD ALLGEYER |LAST UPDATE DATE: 01/23/97 | |HQ OPS OFFICER: LEIGH TROCINE +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |BLAIR SPITZBERG 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 | | 2 | N Y 100 POWER OPERATION | 100 POWER OPERATION | | | | | +-----+---------------------------------------------+--------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | DISCOVERY THAT A POTENTIAL OVER-STRESS CONDITION WOULD RESULT FROM THE | | DESIGN BASIS ACCIDENT INDUCED HEATUP AND EXPANSION OF WATER CONTAINED IN A | | LIQUID WASTE LINE PENETRATION FROM THE REACTOR COOLANT DRAIN TANK TO THE | | WASTE HOLDUP TANK | | | | IN THE PROCESS OF DEVELOPING A RESPONSE TO GENERIC LETTER 96-06, THE | | LICENSEE IDENTIFIED A CONDITION WHERE THE STRESS IN A PIPE PENETRATION OR | | ITS ASSOCIATED CONTAINMENT ISOLATION VALVES COULD HAVE EXCEEDED ASME CODE | | ALLOWABLES DURING A DESIGN BASIS ACCIDENT. THE POTENTIAL OVER-STRESS | | CONDITION WOULD RESULT FROM THE DESIGN BASIS ACCIDENT INDUCED HEATUP AND | | EXPANSION OF THE WATER CONTAINED IN THE PENETRATION. THE AFFECTED | | PENETRATION IS A THREE-INCH LIQUID WASTE LINE FROM THE REACTOR COOLANT | | DRAIN TANK TO THE WASTE HOLDUP TANK. ENGINEERING ANALYSIS SHOWS THAT | | CONTAINMENT INTEGRITY WOULD HAVE BEEN RETAINED HAD A DESIGN BASIS EVENT | | OCCURRED. | | | | THE PENETRATION HAS BEEN DRAINED SO THAT THE OVER STRESS CONDITION CAN NOT | | OCCUR, AND CURRENT PLANS ARE TO KEEP THE PENETRATION DRAINED UNTIL | | MODIFICATION CAN BE MADE TO ALLOW THE PENETRATION TO BE RETURNED TO | | SERVICE. THE UNIT IS NOT CURRENTLY IN A TECHNICAL SPECIFICATION LIMITING | | CONDITION FOR OPERATION AS A RESULT OF THIS ISSUE. | | | | THE LICENSEE NOTIFIED THE NRC RESIDENT INSPECTOR AND PLANS TO ISSUE A | | LICENSEE EVENT REPORT IN ACCORDANCE WITH 10 CFR 50.73(a)(2)(ii). | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 31644 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: FITZPATRICK REGION: 1 |NOTIFICATION DATE: 01/23/97 | |UNIT: [1] [ ] [ ] STATE: NY |NOTIFICATION TIME: 23:12 [ET]| |RX TYPE: [1] GE-4 |EVENT DATE: 01/23/97 | +------------------------------------------------+EVENT TIME: 22:24[EST]| |NRC NOTIFIED BY: EDWARD HYNES |LAST UPDATE DATE: 01/23/97 | |HQ OPS OFFICER: LEIGH TROCINE +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |THOMAS MOSLAK RDO | |ARPS 50.72(b)(2)(ii) RPS ACTUATION |ROBERT CAPRA, NRR EO | | |FRANK CONGEL, IRD AEOD | | | | | | | | | | +-----+----------+-------+--------+--------------+--+--------+-----------------+ |UNIT |SCRAM CODE|RX CRIT|INIT PWR| INIT RX MODE |CURR PWR| CURR RX MODE | +-----+----------+-------+--------+-----------------+--------+-----------------+ | 1 | M/R Y 58 POWER OPERATION | 0 HOT SHUTDOWN | | | | | | | | | +-----+---------------------------------------------+--------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | LOAD REDUCTION FROM 100% POWER AND MANUAL REACTOR SCRAM FROM 58% POWER DUE | | TO ICE FOULING ON THE CIRCULATING WATER SCREEN INTAKES. | | | | THE LICENSEE'S INITIAL INDICATION OF ICE FOULING ON THE CIRCULATING | | WATER SCREEN INTAKES WAS A DECREASE LAKE INTAKE LEVEL INDICATION. | | THE SECOND INDICATION WAS AN INCREASE IN THE SCREEN DIFFERENTIAL PRESSURE. | | AS A RESULT, THE LICENSEE BEGAN REDUCING REACTOR POWER FROM 100% AT | | APPROXIMATELY 2210. CREWS WERE DISPATCHED TO INVESTIGATE. EFFORTS TO | | MOVE THE SCREENS WERE UNSUCCESSFUL, AND THE SHEAR PINS ON ALL OF THE | | MOTORS BROKE ON ALL THREE SCREENS. AS A RESULT, THE LICENSEE INITIATED | | A MANUAL REACTOR SCRAM FROM 58% POWER AT 2224. ALL RODS FULLY INSERTED, | | AND ALL SYSTEMS FUNCTIONED AS REQUIRED. THERE WERE NO ENGINEERED SAFETY | | FEATURES ACTUATIONS. | | | | THE UNIT IS CURRENTLY IN HOT SHUTDOWN CONDITION WITH REACTOR COOLANT SYSTEM | | TEMPERATURE GREATER THAN 212øF. NORMAL CONDENSATE AND FEEDWATER IS BEING | | SUPPLIED TO THE REACTOR VESSEL, AND STEAM IS BEING BYPASSED TO THE MAIN | | CONDENSER. THE LICENSEE PLANS TO COOL THE UNIT DOWN AND TO PLACE THE MODE | | SWITCH IN REFUELING POSITION. | | | | THERE IS CURRENTLY A DIFFERENTIAL PRESSURE HEAD OF APPROXIMATELY 4 FEET | | ACROSS THE SCREENS, AND THE LICENSEE ESTIMATED THAT FLOW ACROSS THE | | SCREENS IS AT ABOUT 60,000 GALLON PER MINUTE. THE BAYS ON THE DOWNSTREAM | | SIDE OF THESE SCREENS SUPPLY WATER TO THE SERVICE WATER PUMPS, RESIDUAL | | HEAT REMOVAL PUMPS, FIRE WATER PUMPS, AND ESSENTIAL SERVICE WATER PUMPS. | | THERE IS ONE FIRE WATER PUMP THAT TAKES A SUCTION FROM THE UPSTREAM SIDE | | OF THE SCREENS. | | | | THE LICENSEE DID NOT MAKE AN EMERGENCY DECLARATION AS A RESULT OF THIS | | EVENT. THE UNUSUAL EVENT CRITERIA WOULD BE MET IF THE MAIN INTAKE LEVEL | | INDICATION DECREASED TO 237 FEET. THE LOWEST LEVEL INDICATION WAS 240 | | FEET, AND IT IS CURRENTLY HIGHER THAN THAT. | | | | THE LICENSEE NOTIFIED THE NRC RESIDENT INSPECTOR. | | | | * * * UPDATE AT 0400 ON 01/24/97 TAKEN BY STRANSKY * * * | | | | HIGH DIFFERENTIAL PRESSURE ACROSS THE INTAKE SCREENS WAS CAUSED BY A | | LARGE ACCUMULATION OF 1-1/2" LONG STICKLEBACK FISH. THE LICENSEE STATED | | THAT APPROXIMATELY 1 CUBIC YARD OF FISH WERE REMOVED FROM THE SCREENS. | | THE LICENSEE HAD SUSPECTED ICE ACCUMULATION DUE TO WEATHER CONDITIONS | | SIMILAR TO PREVIOUS ICE EVENTS. WHEN THE LICENSEE INITIALLY ATTEMPTED TO | | CLEAR THE SCREENS, THE HIGH LOADING CAUSED SHEAR PINS ON THE TRAVELING | | SCREEN TO BREAK. THE LICENSEE HAS ENTERED A FORCED OUTAGE AND EXPECTS TO | | REMAIN SHUTDOWN FOR APPROXIMATELY THREE DAYS. HOO NOTIFIED R1DO (MOSLAK). | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 31645 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: SURRY REGION: 2 |NOTIFICATION DATE: 01/24/97 | |UNIT: [1] [ ] [ ] STATE: VA |NOTIFICATION TIME: 01:43 [ET]| |RX TYPE: [1] W-3-LP,[2] W-3-LP |EVENT DATE: 01/24/97 | +------------------------------------------------+EVENT TIME: 01:24[EST]| |NRC NOTIFIED BY: GOODHOPE |LAST UPDATE DATE: 01/24/97 | |HQ OPS OFFICER: BOB STRANSKY +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |FREDRICKSON RDO | |ASHU 50.72(b)(1)(i)(A) PLANT S/D REQD BY TS | | | | | | | | | | | | | | +-----+----------+-------+--------+--------------+--+--------+-----------------+ |UNIT |SCRAM CODE|RX CRIT|INIT PWR| INIT RX MODE |CURR PWR| CURR RX MODE | +-----+----------+-------+--------+-----------------+--------+-----------------+ | 1 | N Y 100 POWER OPERATION | 97 POWER OPERATION | | | | | | | | | +-----+---------------------------------------------+--------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | UNIT SHUTDOWN DUE TO SMALL THRU-WALL LEAK ON STEAM TRAP LINE | | | | AT 0124, THE LICENSEE COMMENCED A UNIT SHUTDOWN IN ACCORDANCE WITH PLANT | | TECHNICAL SPECIFICATION 4.15.C DUE TO THE DISCOVERY OF A SMALL (WISPING) | | STEAM LEAK ON A 1-1/2" DIAMETER STEAM TRAP LINE ATTACHED TO THE 'B' MAIN | | STEAM LINE. THE STEAM TRAP LINE CONNECTS TO THE MAIN STEAM LINE DOWNSTREAM | | OF THE MAIN STEAM TRIP VALVE, AND CANNOT BE ISOLATED. REACTOR POWER IS | | BEING REDUCED AT A RATE OF 0.33% PER MINUTE, AND THE LICENSEE ANTICIPATES | | TAKING THE UNIT TO HOT SHUTDOWN FOR REPAIRS. | | | | THE NRC RESIDENT INSPECTOR HAS BEEN INFORMED OF THIS EVENT BY THE LICENSEE. | +------------------------------------------------------------------------------+