U.S. Nuclear Regulatory Commission Operations Center Event Reports For 07/17/96 - 07/18/96 ** EVENT NUMBERS ** 30757 30758 30759 30760 30761 30762 +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 30757 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: QUAD CITIES REGION: 3 |NOTIFICATION DATE: 07/17/96 | |UNIT: [1] [2] [ ] STATE: IL |NOTIFICATION TIME: 08:54 [ET]| |RX TYPE: [1] GE-3,[2] GE-3 |EVENT DATE: 07/17/96 | +------------------------------------------------+EVENT TIME: 07:23[CDT]| |NRC NOTIFIED BY: ED KLUNDT |LAST UPDATE DATE: 07/17/96 | |HQ OPS OFFICER: STEVE SANDIN +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |JOHN MADERA RDO | |AESS 50.72(b)(1)(v) EMERGENCY SIREN INOP | | | | | | | | | | | | | | +-----+----------+-------+--------+--------------+--+--------+-----------------+ |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 +------------------------------------------------------------------------------+ | EMERGENCY SIRENS INOPERABLE FOR REASONS UNKNOWN. | | | | THE CONTROL ROOM WAS NOTIFIED AT 0723CDT BY THE NUCLEAR DUTY OFFICER OF | | ROCK ISLAND COUNTY, ILL. THAT A LOSS OF ABILITY TO INITIATE 21 EMERGENCY | | SIRENS HAD OCCURRED AT 0705CDT. THE CAUSE OF THE PROBLEM IS UNKNOWN AND | | UNDER INVESTIGATION WITH A CURRENT ESTIMATE OF 2 HOURS FOR REPAIRS. THE | | LICENSEE INFORMED THE NRC RESIDENT INSPECTOR. | | | | * * * UPDATE 1321 7/17/96 FROM REED TAKEN BY STRANSKY * * * | | | | ALL SIRENS RETURNED TO SERVICE AT 1215 CDT. THE NRC RESIDENT INSPECTOR HAS | | BEEN INFORMED. NOTIFIED R3DO (MADERA). | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 30758 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: SALEM REGION: 1 |NOTIFICATION DATE: 07/17/96 | |UNIT: [ ] [2] [ ] STATE: NJ |NOTIFICATION TIME: 16:48 [ET]| |RX TYPE: [1] W-4-LP,[2] W-4-LP |EVENT DATE: 07/17/96 | +------------------------------------------------+EVENT TIME: 13:30[EDT]| |NRC NOTIFIED BY: SAUER |LAST UPDATE DATE: 07/17/96 | |HQ OPS OFFICER: BOB STRANSKY +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |DOLCE 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 | +-----+----------+-------+--------+-----------------+--------+-----------------+ | | | | | 2 | N N 0 REFUELING | 0 REFUELING | | | | | +-----+---------------------------------------------+--------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | LICENSEE DISCOVERED CRACKED ROLL PIN IN REFURBISHED 4kV CIRCUIT BREAKER | | | | DURING PREINSTALLATION TESTING OF A 4kV GE CIRCUIT BREAKER, ELECTRICIANS | | NOTICED THAT THE INNER LATCH PAWL ON THE SPRING CHARGING MECHANISM WAS NOT | | ENGAGED WITH THE RATCHET MECHANISM. FURTHER INSPECTION REVEALED THAT THE | | SPRING RETAINER ROLL PIN HAD BROKEN ALONG ITS VERTICAL AXIS. THE FAILURE | | OF THESE PINS COULD CAUSE THE BREAKER TO FAIL TO OPEN OR CLOSE DUE TO THE | | FAILURE OF THE SPRING CHARGING MECHANISM. | | | | THE LICENSEE OBSERVED THAT THE BLOCK TO WHICH THE ROLL PIN WAS MOUNTED WAS | | ZINC PLATED. PREVIOUSLY, THE VENDOR (NLI), HAD EXPERIENCED PROBLEMS WITH | | HYDROGEN EMBRITTLEMENT OF HARDENED PARTS THAT WERE ZINC PLATED. THIS | | CONDITION HAS BEEN REPORTED TO THE INDUSTRY THROUGH AN INPO OPERATING | | EXPERIENCE REPORT DATED 6/5/96. THE LICENSEE REPORTED THAT A TOTAL OF 16 | | BREAKERS WHICH WERE RECENTLY REFURBISHED BY NLI HAVE BEEN INSTALLED. THE | | LICENSEE IS CURRENTLY PLANNING TO REPLACE AFFECTED BREAKERS IN SAFETY | | RELATED APPLICATIONS. THE NRC RESIDENT INSPECTOR HAS BEEN INFORMED BY THE | | LICENSEE. | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 30759 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: RIVER BEND REGION: 4 |NOTIFICATION DATE: 07/17/96 | |UNIT: [1] [ ] [ ] STATE: LA |NOTIFICATION TIME: 17:04 [ET]| |RX TYPE: [1] GE-6 |EVENT DATE: 07/17/96 | +------------------------------------------------+EVENT TIME: 15:10[CDT]| |NRC NOTIFIED BY: KELLY |LAST UPDATE DATE: 07/17/96 | |HQ OPS OFFICER: BOB STRANSKY +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |CHRIS VANDENBURGH 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 | | | | | | | | | +-----+---------------------------------------------+--------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | UNAUTHORIZED ENTRY INTO PROTECTED AREA BY CONTRACT EMPLOYEE. IMMEDIATE | | COMPENSATORY ACTIONS TAKEN UPON DISCOVERY. THE NRC RESIDENT INSPECTOR WILL | | BE INFORMED BY THE LICENSEE. SEE HOO LOG FOR DETAILS. | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 30760 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: BROWNS FERRY REGION: 2 |NOTIFICATION DATE: 07/17/96 | |UNIT: [ ] [ ] [3] STATE: AL |NOTIFICATION TIME: 18:43 [ET]| |RX TYPE: [1] GE-4,[2] GE-4,[3] GE-4 |EVENT DATE: 07/17/96 | +------------------------------------------------+EVENT TIME: 17:00[CDT]| |NRC NOTIFIED BY: BOOHER |LAST UPDATE DATE: 07/17/96 | |HQ OPS OFFICER: BOB STRANSKY +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |COLLINS 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 | +-----+----------+-------+--------+-----------------+--------+-----------------+ | | | | | | | | | 3 | N Y 100 POWER OPERATION | 93 POWER OPERATION | +-----+---------------------------------------------+--------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | TECHNICAL SPECIFICATION REQUIRED SHUTDOWN DUE TO LOSS OF DIVISION I LOGIC | | INVERTER. | | | | AT 1300 CDT, THE DIVISION I ECCS ATU (ANALOG TRIP UNIT) INVERTER FAILED. | | THIS CAUSED A LOSS OF THE DIVISION I LOGIC INPUTS FOR EMERGENCY CORE | | COOLING SYSTEM AND EMERGENCY DIESEL GENERATOR START. ADDITIONALLY, THE | | RCIC SYSTEM BECAME INOPERABLE DUE TO THE LOSS OF POWER TO THE RCIC FLOW | | CONTROLLER AND CORE SPRAY SYSTEM WOULD NOT HAVE INJECTED DUE TO THE LOSS OF | | LOGIC POWER FOR ITS INJECTION VALVE. AT 1700 CDT, THE LICENSEE COMMENCED A | | UNIT SHUTDOWN IN ACCORDANCE WITH TECHNICAL SPECIFICATIONS. | | | | THE LICENSEE IS ATTEMPTING TO REPAIR THE INVERTER, AND IS IN THE PROCESS OF | | REPLACING SOME SILICON CONTROL RECTIFIERS (SCRs) WITHIN THE INVERTER. THE | | NRC RESIDENT INSPECTOR HAS BEEN INFORMED BY THE LICENSEE. | | | | * * * UPDATE 1903 7/17/96 FROM BOOHER TAKEN BY STRANSKY * * * | | | | THE DIVISION I ATU INVERTER HAS BEEN RESTORED, AND THE LICENSEE HAS | | TERMINATED THE UNIT SHUTDOWN. THE NRC RESIDENT INSPECTOR HAS BEEN | | INFORMED. NOTIFIED R2DO (COLLINS). | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 30761 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: MILLSTONE REGION: 1 |NOTIFICATION DATE: 07/17/96 | |UNIT: [ ] [2] [ ] STATE: CT |NOTIFICATION TIME: 20:18 [ET]| |RX TYPE: [1] GE-3,[2] CE,[3] W-4-LP |EVENT DATE: 07/17/96 | +------------------------------------------------+EVENT TIME: 20:18[EDT]| |NRC NOTIFIED BY: BONNER |LAST UPDATE DATE: 07/17/96 | |HQ OPS OFFICER: BOB STRANSKY +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |DOLCE 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 | +-----+----------+-------+--------+-----------------+--------+-----------------+ | | | | | 2 | N N 0 REFUELING | 0 REFUELING | | | | | +-----+---------------------------------------------+--------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | REACTOR PROTECTION ANALYSIS MAY HAVE BEEN NONCONSERVATIVE | | | | THE LICENSEE'S PRELIMINARY EVALUATION INDICATES THAT THE ANALYSIS FOR AN | | UNCONTROLLED CONTROL ROD BANK WITHDRAWAL FROM A SUBCRITICAL OR LOW POWER | | CONDITION MAY HAVE BEEN NONCONSERVATIVE. THE REACTOR PROTECTION SYSTEM | | STARTUP RATE TRIP, WHICH HAS SINCE BEEN REMOVED, MAY HAVE PLACED THE UNIT | | OUTSIDE OF ITS DESIGN BASIS. (THE CURRENT ANALYSIS DOES NOT REQUIRE A | | STARTUP RATE TRIP.) THE LICENSEE WILL CONTINUE TO EVALUATE THIS CONDITION. | | THE NRC RESIDENT INSPECTOR HAS BEEN INFORMED BY THE LICENSEE. | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 30762 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: PALISADES REGION: 3 |NOTIFICATION DATE: 07/17/96 | |UNIT: [1] [ ] [ ] STATE: MI |NOTIFICATION TIME: 22:06 [ET]| |RX TYPE: [1] CE |EVENT DATE: 07/17/96 | +------------------------------------------------+EVENT TIME: 21:14[EDT]| |NRC NOTIFIED BY: HARDEN |LAST UPDATE DATE: 07/17/96 | |HQ OPS OFFICER: BOB STRANSKY +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |MADERA RDO | |AOUT 50.72(b)(1)(ii)(B) OUTSIDE DESIGN BASIS | | |NLCO TECH SPEC LCO A/S | | | | | | | | | | | +-----+----------+-------+--------+--------------+--+--------+-----------------+ |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 +------------------------------------------------------------------------------+ | UNIT OUTSIDE OF DESIGN BASIS FOR APPROXIMATELY TWO MINUTES | | | | WHILE REFILLING A SAFETY INJECTION TANK (SIT) AFTER TAKING A MONTHLY WATER | | SAMPLE, THE HIGH PRESSURE SAFETY INJECTION PUMP THAT WAS BEING USED TO | | REFILL THE SIT TRIPPED DUE TO TIME OVERCURRENT. AT THE TIME OF THE EVENT, | | THE SIT WAS INOPERABLE DUE TO LOW NITROGEN PRESSURE. THIS CONDITION (ONE | | INOPERABLE SIT AND ONE INOPERABLE HPSI PUMP) PLACED THE UNIT OUTSIDE OF ITS | | DESIGN BASIS, AND THE LICENSEE ENTERED TECHNICAL SPECIFICATION 3.0.3. | | OPERATORS IMMEDIATELY RECHARGED THE SIT WITH NITROGEN, AND RETURNED IT TO | | OPERABLE. TECHNICAL SPECIFICATION 3.0.3 WAS EXITED APPROXIMATELY TWO | | MINUTES AFTER ENTRY. | | | | THE LICENSEE IS CURRENTLY INVESTIGATING THE PROBLEM WITH THE HPSI PUMP. THE | | NRC RESIDENT INSPECTOR HAS BEEN INFORMED OF THIS EVENT BY THE LICENSEE. | +------------------------------------------------------------------------------+