U.S. Nuclear Regulatory Commission Operations Center Event Reports For 03/17/97 - 03/18/97 ** EVENT NUMBERS ** 31961 31962 31963 31964 +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 31961 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: OCONEE REGION: 2 |NOTIFICATION DATE: 03/17/97 | |UNIT: [1] [2] [3] STATE: SC |NOTIFICATION TIME: 15:25 [ET]| |RX TYPE: [1] B&W-L-LP,[2] B&W-L-LP,[3] B&W-L-LP |EVENT DATE: 03/17/97 | +------------------------------------------------+EVENT TIME: 14:00[EST]| |NRC NOTIFIED BY: DAVE NIX |LAST UPDATE DATE: 03/17/97 | |HQ OPS OFFICER: BOB STRANSKY +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |AL BELISLE 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 | 100 POWER OPERATION | | 2 | N N 0 COLD SHUTDOWN | 100 POWER OPERATION | | 3 | N N 0 REFUELING | 40 POWER OPERATION | +-----+---------------------------------------------+--------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | ACTIVE BORON DILUTION FLOWPATHS INOPERABLE DUE TO GENERIC LETTER 96-06 | | CONCERNS | | | | THE FOLLOWING IS TEXT OF A FACSIMILE SUBMITTED BY THE LICENSEE: | | | | "THERE ARE THREE REDUNDANT BORON DILUTION FLOWPATHS PROVIDED IN THE OCONEE | | DESIGN. TWO OF THESE FLOWPATHS ARE AVAILABLE BY POSITIONING CERTAIN VALVES | | TO ESTABLISH THE FLOWPATH (ACTIVE FLOWPATHS), AND ONE IS AVAILABLE BY A | | REACTOR VESSEL INTERNAL FLOWPATH (PASSIVE FLOWPATH). ONE OF THE ACTIVE | | FLOWPATHS CAN BE ESTABLISHED BY OPENING VALVES LP-1 AND LP-2, AND THE OTHER | | FLOWPATH CAN BE ESTABLISHED BY OPENING VALVES LP-103 AND LP-104. | | | | THE OCONEE UPDATED FINAL SAFETY ANALYSIS REPORT (UFSAR) REQUIRES AT LEAST | | TWO OF THESE THREE BORON DILUTION FLOWPATHS TO BE AVAILABLE FOLLOWING A | | LOSS OF COOLANT ACCIDENT (LOCA). A BORON DILUTION FLOWPATH ENSURES THAT | | UNACCEPTABLE BORON CONCENTRATIONS DO NOT DEVELOP IN THE CORE, RESULTING IN | | BORON PRECIPITATION AND LOSS OF HEAT TRANSFER CAPABILITY DURING A LOCA. | | | | THE ACTIVE FLOWPATH THROUGH VALVES LP-103 AND LP-104 WAS PREVIOUSLY | | DETERMINED TO BE INOPERABLE FOR ALL THREE UNITS DUE TO THE PRESSURE LOCKING | | AND THERMAL BINDING ANALYSES CONDUCTED PER GENERIC LETTER 95-07. SINCE THIS | | DETERMINATION, OPERABILITY OF THE LP-103/104 FLOWPATH HAS BEEN RESTORED ON | | UNIT 3 BY MODIFICATIONS TO THESE VALVES. SIMILAR MODIFICATIONS ARE PLANNED | | ON UNITS 1 AND 2. | | | | ON MARCH 17, 1997, AT 1400, ON UNITS 1, 2, AND 3, AS A RESULT OF | | ENGINEERING REVIEWS CONDUCTED PER GENERIC LETTER 96-06 REGARDING THERMALLY | | INDUCED OVERPRESSURIZATION OF WATER-FILLED PIPING, IT WAS CONSERVATIVELY | | DETERMINED THAT VALVES LP-1, LP-2, LP-103, AND LP-104 MAY NOT HAVE BEEN | | CAPABLE OF OPENING FOLLOWING A LOCA. THEREFORE, IT HAS BEEN CONSERVATIVELY | | CONCLUDED THAT THE ACTIVE BORON DILUTION FLOWPATHS ON ALL THREE UNITS MAY | | NOT HAVE BEEN OPERABLE IN THE PAST DUE TO THERMALLY INDUCED | | OVERPRESSURIZATION. | | | | THEREFORE, IN THE PAST, ONLY THE PASSIVE BORON DILUTION FLOWPATH THROUGH | | THE REACTOR VESSEL INTERNALS MAY HAVE BEEN AVAILABLE IN THE EVENT OF A | | LOCA. ALTHOUGH THE PASSIVE BORON DILUTION FLOWPATH WAS AVAILABLE, THIS | | CONDITION IS CONSIDERED OUTSIDE THE EXISTING DESIGN AND LICENSING BASIS OF | | THE PLANT SINCE THE UFSAR REQUIRES AT LEAST TWO OF THREE BORON DILUTION | | FLOWPATHS TO BE AVAILABLE IN THE EVENT OF A LOCA. | | | | THE ACTIVE BORON DILUTION FLOWPATH THROUGH LP-1 AND LP-2 FOR ALL THREE | | UNITS IS CURRENTLY OPERABLE. A PROCEDURE REVISION WAS MADE TO PRE-STAGE AN | | AIR BUBBLE IN THE PIPE BETWEEN LP-1 AND LP-2 TO ENSURE THAT THERMALLY | | INDUCED OVERPRESSURIZATION COULD NOT OCCUR IN THE EVENT OF A LOCA. A | | SIMILAR PROCEDURE CHANGE WAS MADE FOR THE ACTIVE BORON DILUTION FLOWPATH | | THROUGH LP-103 AND LP-104 ON UNIT 3 TO RESTORE THAT PATH TO PRESENTLY | | OPERABLE STATUS. | | | | THIS REPORT THEREFORE ADDRESSES THE PERIOD OF PAST INOPERABILITY OF THE | | AVAILABLE BORON DILUTION FLOWPATHS. THIS REPORT WILL BE FOLLOWED BY A | | LICENSEE EVENT REPORT (LER) WHICH WILL PROVIDE DETAILS OF THE ROOT CAUSE | | AND CORRECTIVE ACTIONS FOR THIS EVENT." | | | | THE NRC RESIDENT INSPECTOR HAS BEEN INFORMED BY THE LICENSEE. | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |FUEL CYCLE FACILITY | |EVENT NUMBER: 31962 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: PORTSMOUTH GASEOUS DIFFUSION PLANT |NOTIFICATION DATE: 03/17/97 | | RXTYPE: URANIUM ENRICHMENT FACILITY |NOTIFICATION TIME: 17:25 [ET]| |COMMENTS: 2 DEMOCRACY CENTER |EVENT DATE: 03/17/97 | | 6903 ROCKLEDGE DRIVE |EVENT TIME: 15:55[EST]| | BETHESDA, MD 20817 (301)564-3200 |LAST UPDATE DATE: 03/17/97 | | CITY: PIKETON REGION: 3 +-----------------------------+ | COUNTY: PIKE STATE: OH |PERSON ORGANIZATION| |LICENSE#: GDP-2 AGREEMENT: N |HILAND RDO | | DOCKET: 0707002 | | +------------------------------------------------+ | |NRC NOTIFIED BY: HALCOMB | | |HQ OPS OFFICER: BOB STRANSKY | | +------------------------------------------------+ | |EMERGENCY CLASS: NOT APPLICABLE | | |10 CFR SECTION: | | |NONR OTHER UNSPEC REQMNT | | | | | | | | | | | | | | +------------------------------------------------+-----------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | CERTIFICATE HOLDER NOTIFIED STATE OF OHIO REGARDING NPDES PERMIT VIOLATION | | | | AN EFFLUENT SAMPLE TAKEN ON 03/04/97, FROM MONITORING POINT X230-J7 (PLANT | | EFFLUENT OUTFALL TO LITTLE BEAVER CREEK) INDICATED A POLYCHLORINATED | | BIPHENYL (PCB) CONCENTRATION OF 1.4 PARTS PER BILLION (PPB). THE NPDES | | DISCHARGE LIMIT IS 0.0 PPB. AT 1555 ON 03/17/97, U.S. ENRICHMENT | | CORPORATION NOTIFIED THE OHIO ENVIRONMENTAL PROTECTION AGENCY OF THE NPDES | | PERMIT VIOLATION. THE ENVIRONMENTAL CONTROL DEPARTMENT IS CURRENTLY | | INVESTIGATING THE EVENT. THE NRC RESIDENT INSPECTOR HAS BEEN INFORMED. | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 31963 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: SUSQUEHANNA REGION: 1 |NOTIFICATION DATE: 03/17/97 | |UNIT: [1] [ ] [ ] STATE: PA |NOTIFICATION TIME: 17:59 [ET]| |RX TYPE: [1] GE-4,[2] GE-4 |EVENT DATE: 03/17/97 | +------------------------------------------------+EVENT TIME: 15:18[EST]| |NRC NOTIFIED BY: ROLAND |LAST UPDATE DATE: 03/17/97 | |HQ OPS OFFICER: BOB STRANSKY +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |COWGILL 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 Y 8 STARTUP | 8 STARTUP | | | | | | | | | +-----+---------------------------------------------+--------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | HIGH PRESSURE COOLANT INJECTION (HPCI) SYSTEM FAILED SURVEILLANCE TEST | | | | DURING PERFORMANCE OF THE HPCI SURVEILLANCE TEST, THE SYSTEM REACHED A FLOW | | RATE OF 5,000 GPM 30.3 SECONDS AFTER SYSTEM INITIATION AS RECORDED BY A | | STOPWATCH IN THE CONTROL ROOM. THE ACCEPTANCE CRITERION FOR THIS TEST IS | | 29.5 SECONDS. THE LICENSEE STATED THAT, DUE TO A MISCOMMUNICATION, THE | | NORMAL PLANT DATA RECORDING EQUIPMENT, GENERAL ELECTRIC TESTING AND | | RECORDING SYSTEM (GETARS), WAS NOT AVAILABLE DURING THE TEST. THE LICENSEE | | HAS HALTED POWER ASCENSION UNTIL THE HPCI SURVEILLANCE CAN BE RUN AGAIN | | WITH THE GETARS OPERATING. THE NRC RESIDENT INSPECTOR HAS BEEN INFORMED. | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 31964 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: LASALLE REGION: 3 |NOTIFICATION DATE: 03/18/97 | |UNIT: [1] [ ] [ ] STATE: IL |NOTIFICATION TIME: 01:53 [ET]| |RX TYPE: [1] GE-5,[2] GE-5 |EVENT DATE: 03/17/97 | +------------------------------------------------+EVENT TIME: 23:00[CST]| |NRC NOTIFIED BY: DAVE SHELDON |LAST UPDATE DATE: 03/18/97 | |HQ OPS OFFICER: DICK JOLLIFFE +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |PATRICK HILAND 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 +------------------------------------------------------------------------------+ | - FIRE PROTECTION SYSTEM HANGERS FOUND MISSING FROM CABLE SPREADING ROOM - | | | | UNIT 1 IS IN CONDITION 4 (COLD SHUTDOWN) IN A MAINTENANCE OUTAGE THAT BEGAN | | IN SEPTEMBER 1996, AND UNIT 2 IS DEFUELED IN CONDITION 5 (REFUELING) IN A | | REFUELING OUTAGE THAT BEGAN IN SEPTEMBER 1996. ON MARCH 17, 1997, THE | | LICENSEE DISCOVERED SEVERAL MISSING OR DISCONNECTED PIPE SUPPORTS FOR THE | | 1-1/4 TO 3-INCH DIAMETER FIRE PROTECTION SYSTEM PIPING IN THE UNIT 1 | | DIVISION 2 ELECTRICAL CABLE SPREADING ROOM. ALTHOUGH THE FIRE PROTECTION | | SYSTEM FOR THIS ROOM IS OPERABLE FROM A FIRE PROTECTION STANDPOINT, | | LICENSEE ENGINEERING PERSONNEL ARE UNCERTAIN OF THE CAPABILITY OF THE | | PIPING SYSTEM TO REMAIN INTACT DURING A SEISMIC EVENT. | | | | AS A RESULT, THE LICENSEE CONSERVATIVELY CONSIDERS ALL UNIT 1 DIVISION 2 | | SYSTEMS AND COMPONENTS TO BE INOPERABLE. THESE SYSTEMS AND COMPONENTS, | | CURRENTLY INOPERABLE FOR SCHEDULED MAINTENANCE ACTIVITIES, INCLUDE THE 'B' | | AND 'C' TRAINS OF THE RESIDUAL HEAT REMOVAL SYSTEM, 'A' TRAIN OF THE | | CONTROL ROOM VENTILATION SYSTEM, 'A' TRAIN OF THE AUXILIARY ELECTRICAL | | EQUIPMENT ROOM VENTILATION SYSTEM, STANDBY GAS TREATMENT SYSTEM, AND | | HYDROGEN RECOMBINER SYSTEM. | | | | LICENSEE ENGINEERING PERSONNEL ARE PERFORMING ANALYSES TO DETERMINE THE | | ADEQUACY OF THE AS-FOUND UNIT 1 DIVISION 2 FIRE PROTECTION SYSTEM PIPE | | SUPPORTS AND PLAN TO INSTALL DISCONNECTED AND/OR MISSING SUPPORTS. LICENSEE | | PERSONNEL ARE INSPECTING FIRE PROTECTION SYSTEM PIPING IN THE REMAINING | | UNIT 1 SAFETY-RELATED AREAS AND THE FIRE PROTECTION SYSTEM PIPING IN UNIT 2 | | SAFETY-RELATED AREAS FOR SIMILAR DISCREPANCIES. | | | | THE LICENSEE WILL SUBMIT AN LER AND WILL INFORM THE NRC RESIDENT INSPECTOR. | +------------------------------------------------------------------------------+