U.S. Nuclear Regulatory Commission Operations Center Event Reports For 04/14/98 - 04/15/98 ** EVENT NUMBERS ** 34069 34070 34071 34072 34073 +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 34069 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: OYSTER CREEK REGION: 1 |NOTIFICATION DATE: 04/14/98 | |UNIT: [1] [ ] [ ] STATE: NJ |NOTIFICATION TIME: 12:21 [ET]| |RX TYPE: [1] GE-2 |EVENT DATE: 04/14/98 | +------------------------------------------------+EVENT TIME: 10:45[EDT]| |NRC NOTIFIED BY: FRANK CIGANIK |LAST UPDATE DATE: 04/14/98 | |HQ OPS OFFICER: BOB STRANSKY +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |LAWRENCE DOERFLEIN 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 +------------------------------------------------------------------------------+ | VENTILATION SYSTEM DIFFERENTIAL PRESSURE IN OLD RADWASTE BUILDING BELOW | | FSAR VALUE. | | | | AFTER CALIBRATING THE DIFFERENTIAL PRESSURE INSTRUMENTATION IN THE OLD | | RADWASTE BUILDING, THE LICENSEE DISCOVERED THAT THE BUILDING VENTILATION | | SYSTEM WAS NOT MAINTAINING THE REQUIRED 0.25" (WATER GAUGE) OF BUILDING | | VACUUM SPECIFIED IN THE FSAR. THE BUILDING WAS ACTUALLY BEING MAINTAINED AT | | 0.08" OF VACUUM. THE LICENSEE IS CURRENTLY RESTORING BUILDING DIFFERENTIAL | | PRESSURE TO THE FSAR VALUE, AND PLANS TO REEVALUATE THE VENTILATION | | SPECIFICATIONS FOR THE BUILDING TO REFLECT THE SIGNIFICANT DECREASE IN | | BUILDING USAGE. THE NRC RESIDENT INSPECTOR WILL BE INFORMED. | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 34070 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: QUAD CITIES REGION: 3 |NOTIFICATION DATE: 04/14/98 | |UNIT: [1] [2] [ ] STATE: IL |NOTIFICATION TIME: 16:23 [ET]| |RX TYPE: [1] GE-3,[2] GE-3 |EVENT DATE: 04/14/98 | +------------------------------------------------+EVENT TIME: 14:30[CDT]| |NRC NOTIFIED BY: TOM OSELAND |LAST UPDATE DATE: 04/14/98 | |HQ OPS OFFICER: BOB STRANSKY +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |JOHN JACOBSON RDO | |DDDD 73.71 UNSPECIFIED PARAGRAPH | | | | | | | | | | | | | | +-----+----------+-------+--------+--------------+--+--------+-----------------+ |UNIT |SCRAM CODE|RX CRIT|INIT PWR| INIT RX MODE |CURR PWR| CURR RX MODE | +-----+----------+-------+--------+-----------------+--------+-----------------+ | 1 | N N 0 COLD SHUTDOWN | 0 COLD SHUTDOWN | | 2 | N N 0 COLD SHUTDOWN | 0 COLD SHUTDOWN | | | | | +-----+---------------------------------------------+--------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | UNAUTHORIZED ENTRY BY CONTRACT EMPLOYEE INTO PROTECTED AREA. IMMEDIATE | | COMPENSATORY MEASURES TAKEN UPON DISCOVERY. SEE HOO LOG FOR ADDITIONAL | | DETAILS. THE NRC RESIDENT INSPECTOR WILL BE INFORMED. | | | | [HOO NOTE: THIS EVENT WAS DISCOVERED BY LICENSEE DURING REVIEW OF EN 33981 | | FROM DRESDEN.] | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 34071 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: WATERFORD REGION: 4 |NOTIFICATION DATE: 04/14/98 | |UNIT: [3] [ ] [ ] STATE: LA |NOTIFICATION TIME: 17:20 [ET]| |RX TYPE: [3] CE |EVENT DATE: 04/14/98 | +------------------------------------------------+EVENT TIME: 16:00[CDT]| |NRC NOTIFIED BY: OSCAR PIPKINS |LAST UPDATE DATE: 04/14/98 | |HQ OPS OFFICER: BOB STRANSKY +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |BLAINE MURRAY RDO | |AOUT 50.72(b)(1)(ii)(B) OUTSIDE DESIGN BASIS | | |AINB 50.72(b)(2)(iii)(B) POT RHR INOP | | | | | | | | | | | +-----+----------+-------+--------+--------------+--+--------+-----------------+ |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 +------------------------------------------------------------------------------+ | CHILLED WATER SYSTEM MAY HAVE BEEN DEGRADED DUE TO WIRING DISCREPANCIES | | | | THE LICENSEE HAS DETERMINED THAT THE ESSENTIAL CHILLED WATER (CHW) SYSTEM | | MAY HAVE BEEN DEGRADED DURING THE PERIOD FROM 2/8/1998 TO 4/2/1998 DUE TO | | DIFFERENCES BETWEEN DESIGN DRAWINGS AND ACTUAL WIRING IN THE CONTROL | | CIRCUITRY. WHILE THE FIELD WIRING WAS ELECTRICALLY EQUIVALENT TO THAT | | DEPICTED ON THE DESIGN DRAWINGS, THE ACTUAL WIRING CONTAINED AMMETER | | TERMINAL POINTS AND ADDITIONAL LENGTHS OF WIRE IN THE SHUNT RESISTOR LEG. | | THE LICENSEE BELIEVES THAT THE ADDITIONAL WIRING CAUSED SHUNT RESISTANCE TO | | VARY DURING SYSTEM USAGE DUE TO HEATING OF VARIOUS ELECTRICAL COMPONENTS, | | CREATING A FALSE LOAD SIGNAL IN THE CONTROL CIRCUITRY. THE LOAD SIGNAL | | REDUCES CHILLER CAPACITY AS THE GUIDE VANES CLOSE IN RESPONSE TO THE | | PERCEIVED LOADING. THIS CONDITION WAS OBSERVED ON CHW TRAINS "A" AND "B". | | | | THE "A" AND "B" CHW CHILLERS HAVE BEEN REWIRED TO MATCH THE DESIGN | | DRAWINGS. WHILE THE "A/B" CHILLER HAS NOT EXHIBITED THIS CONDITION, THE | | LICENSEE PLANS TO REWIRE IT DURING THE NEXT COMPONENT OUTAGE. THE NRC | | RESIDENT INSPECTOR HAS BEEN INFORMED. | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 34072 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: CALVERT CLIFFS REGION: 1 |NOTIFICATION DATE: 04/14/98 | |UNIT: [1] [ ] [ ] STATE: MD |NOTIFICATION TIME: 17:49 [ET]| |RX TYPE: [1] CE,[2] CE |EVENT DATE: 04/14/98 | +------------------------------------------------+EVENT TIME: 16:05[EDT]| |NRC NOTIFIED BY: MONTE SECKENS |LAST UPDATE DATE: 04/14/98 | |HQ OPS OFFICER: BOB STRANSKY +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |LAWRENCE DOERFLEIN 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 +------------------------------------------------------------------------------+ | BORIC ACID ACCUMULATION DISCOVERED ON PRESSURIZER PENETRATION | | | | THE LICENSEE OBSERVED AN ACCUMULATION OF BORIC ACID ON THE PRESSURIZER, AT | | THE PRESSURIZER HEATER PENETRATION, INDICATING A CRACK IN THE PENETRATION | | WELDS. THIS CONDITION REPRESENTS A REACTOR COOLANT SYSTEM PRESSURE BOUNDARY | | LEAK. THE NRC RESIDENT INSPECTOR HAS BEEN INFORMED. | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 34073 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: VOGTLE REGION: 2 |NOTIFICATION DATE: 04/15/98 | |UNIT: [ ] [2] [ ] STATE: GA |NOTIFICATION TIME: 03:23 [ET]| |RX TYPE: [1] W-4-LP,[2] W-4-LP |EVENT DATE: 04/15/98 | +------------------------------------------------+EVENT TIME: 01:06[EDT]| |NRC NOTIFIED BY: MCCARY |LAST UPDATE DATE: 04/15/98 | |HQ OPS OFFICER: JOHN MacKINNON +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |LANDIS 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 +------------------------------------------------------------------------------+ | UNEXPECTED ENGINEERED SAFETY FEATURE (ESF) ACTUATION | | | | DURING THE PERFORMANCE OF A TEMPORARY ENGINEERING PROCEDURE, NUCLEAR | | SERVICE COOLING WATER ISOLATION VALVES TO REACTOR CAVITY AND CONTAINMENT | | AUXILIARY COOLERS CLOSED. THIS CONSTITUTES AN ESF ACTUATION THAT WAS NOT | | PART OF THE PRE-PLANNED PROCEDURE. THE LICENSEE IS INVESTIGATING WHY THE | | ISOLATION VALVES CLOSED. | | | | THE NRC RESIDENT INSPECTOR WILL BE NOTIFIED OF THIS EVENT BY THE LICENSEE. | +------------------------------------------------------------------------------+