U.S. Nuclear Regulatory Commission Operations Center Event Reports For 01/20/95 - 01/23/95 ** EVENT NUMBERS ** 28206 28263 28264 28265 !!!!!!!!! THIS EVENT HAS BEEN RETRACTED. THIS EVENT HAS BEEN RETRACTED !!!!!!! +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 28206 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: SEQUOYAH REGION: 2 |NOTIFICATION DATE: 01/03/95 | |UNIT: [1] [2] [ ] STATE: TN |NOTIFICATION TIME: 05:15 [ET]| |RX TYPE: [1] W-4-LP,[2] W-4-LP |EVENT DATE: 01/03/95 | +------------------------------------------------+EVENT TIME: 04:21[EST]| |NRC NOTIFIED BY: BILL HARRIS |LAST UPDATE DATE: 01/20/95 | |HQ OPS OFFICER: JOHN MacKINNON +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: UNUSUAL EVENT +-----------------------------+ |10 CFR SECTION: |STEVEN VIAS/LESSER RDO | |AUNA 50.72(b)(1)(ii)(A) UNANALYZED COND OP |ELINOR ADENSAM EO | |AAEC 50.72(a)(1)(i) EMERGENCY DECLARED |CARR FEMA | |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 | | 2 | N Y 100 POWER OPERATION | 100 POWER OPERATION | | | | | +-----+---------------------------------------------+--------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | LATCHES (TWO LATCHES ONE IN UPPER RIGHT HAND SIDE OF THE CUBICLE AND THE | | OTHER LATCH IN THE UPPER LEFT HAND SIDE OF THE CUBICLE) WHICH HOLDS BREAKER | | IN ITS COMPARTMENT FOUND TO BE UNLATCHED. | | | | WHILE PERFORMING CONTROL BOARD WALKDOWN FOR UNIT 2 THE ONCOMING SENIOR | | REACTOR OPERATOR (SRO) DISCOVERED THAT 2-FCV-63-8, A SAFETY RELATED VALVE | | (USED TO SUPPLY SUCTION FROM CONTAINMENT SUMP TO HIGH & INTERMEDIATE HEAD | | SAFETY INJECTION PUMPS AFTER REFUELING WATER STORAGE TANK LEVEL GETS LOW), | | HAD NO INDICATION OF VALVE POSITION. THE UNIT OPERATOR REPLACED THE LIGHT | | BULB AND THE 480V BREAKER WAS VERIFIED CLOSED, BUT THERE WAS STILL NO | | INDICATION OF THE VALVE POSITION. A SRO WAS DISPATCHED TO THE BREAKER. THE | | SRO VERIFIED THE FUSES WERE GOOD. WHILE CHECKING THE FUSES THE BREAKER IN | | ITS COMPARTMENT BEGAN TO MOVE AND THE SRO NOTICED THE LOCAL INDICATING | | LIGHT FOR THE BREAKER FLICKERED. THE SRO PUSHED THE BREAKER SNUGLY INTO ITS | | COMPARTMENT UNTIL IT WAS FULLY LATCHED AND VERIFIED BREAKER HAD PROPER | | INDICATION. THE VALVE, INDICATED CLOSED AT THE BREAKER COMPARTMENT AND | | REMOTELY IN THE MAIN CONTROL ROOM. IT WAS SUBSEQUENTLY DETERMINED THAT THIS | | VALVE WOULD NOT HAVE OPERATED AND THE ACTIONS OF LCO 3.5.2 WAS ENTERED AND | | EXITED DUE TO "A" TRAIN OF ECCS BEING INOPERABLE. A COMPLETE CONTROL BOARD | | WALKDOWN WAS PERFORMED AND NO OTHER SAFETY RELATED VALVES WERE FOUND | | WITHOUT POSITION INDICATION. FURTHER INVESTIGATION OF WHY THE BREAKER WAS | | NOT FULLY ENGAGED REVEALED THE "COMPARTMENT RETENTION LATCH - TWO FOR EACH | | BREAKER" WAS NOT FULLY ENGAGED. THE SHIFT OPERATING SUPERVISOR DIRECTED ALL | | 480V MOLDED CASE BREAKERS TO BE CHECKED FOR SIMILAR CONDITION. NUMEROUS | | BREAKERS WERE FOUND TO BE IN AN UNLATCHED OR PARTIALLY UNLATCHED (ONE OF | | THE TWO LATCHES UNLATCHED) CONDITION, AND THESE BREAKERS WERE CORRECTED ON | | THE SPOT DUE TO THE POTENTIAL FOR THESE BREAKERS TO BE IN AN UNLATCHED | | CONDITION AND BECOME DISENGAGED, AND THE POSSIBILITY OF BOTH TRAINS OF THE | | ESF EQUIPMENT TO BE INOPERABLE AT THE SAME TIME. LICENSEE DETERMINED THAT | | THEY WERE IN AN UNANALYZED CONDITION. LICENSING AND NUCLEAR ENGINEERING | | WERE CONSULTED OF THIS CONDITION. LICENSEE SAID THAT THEY STILL CHECKING | | BREAKERS AT THIS TIME FOR UNIT 1 AND UNIT 2. | | | | ****UPDATE 0538EST 01/03/95 BY BILL HARRIS TAKEN BY MACKINNON**** | | | | LICENSEE UPGRADED THIS EVENT TO AN UNUSUAL EVENT CLASSIFICATION PER THEIR | | RADIOLOGICAL EMERGENCY PLANS "HU15" (CONDITIONS THAT WARRANT INCREASED | | AWARENESS OF PLANT OPERATING STAFF). LICENSEE CONSIDERS THIS A SEISMIC | | CONCERN TO THE PLANT IN THAT IF THEY HAD A SEISMIC EVENT AND THE BREAKERS | | WERE UNLATCHED THE BREAKERS COULD POSSIBLY DISENGAGE FROM THEIR POWER | | SOURCE AND BECOME INOPERABLE. LICENSEE WILL NOTIFY STATE AND LOCAL | | OFFICIALS OF THIS EVENT CLASSIFICATION. | | | | RESIDENT INSPECTOR WAS INFORMED BY THE LICENSEE OF THIS EVENT. | | | | * * * UPDATE @ 1002 ON 1/3/95 BY DENNIS DIMOPHULOS TAKEN BY WEAVER * * * | | THE UNUSUAL EVENT WAS TERMINATED AT 0959 EST. A COMPLETE WALKDOWN OF THE | | SAFETY RELATED BOARDS AND NON SAFETY RELATED BOARDS IN SEISMIC AREAS WAS | | COMPLETED. ALL DISCREPANCIES WERE CORRECTED ON THE SPOT, WITH THE | | EXCEPTION OF ONE CASE WHERE ONE OF THE TWO LATCHES WAS BROKEN. THE CAUSE | | OF THIS CONDITION IS UNDER INVESTIGATION. | | | | THE LICENSEE INFORMED THE NRC RESIDENT INSPECTOR. THE HOO INFORMED THE RDO | | (VIAS); EO (DENNIG); FEMA (SHULL) | | | | ***UPDATE AT17:17 ON 1/20/95 BY DIMOPHULOS TAKEN BY GOULD*** | | | | THE LICENSEE IS RETRACTING THIS EVENT BECAUSE FURTHER EVALUATIONS HAVE | | DETERMINED THAT THE BREAKERS WERE OPERABLE BECAUSE THE CABINET DOORS WERE | | ADEQUATE TO RESTRICT BREAKER MOVEMENT DURING A SEISMIC EVENT. THEREFORE, | | THE LICENSEE HAS DETERMINED THAT THIS EVENT IS NOT REPORTABLE. THE RI HAS | | BEEN INFORMED. | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |GENERAL INFORMATION or OTHER | |EVENT NUMBER: 28263 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |LICENSEE: NUTHERN INTERNATIONAL, INC |NOTIFICATION DATE: 01/20/95 | | CITY: MT.VERNON REGION: 3 |NOTIFICATION TIME: 09:27 [ET]| | COUNTY: STATE: IL |EVENT DATE: 10/21/94 | |LICENSE#: AGREEMENT: Y |EVENT TIME: 12:00[CST]| | DOCKET: |LAST UPDATE DATE: 01/20/95 | | +-----------------------------+ | |PERSON ORGANIZATION| | | | | | | +------------------------------------------------+ | |NRC NOTIFIED BY: FRAN STARR | | |HQ OPS OFFICER: WILLIAM HUFFMAN | | +------------------------------------------------+ | |EMERGENCY CLASS: NOT APPLICABLE | | |10 CFR SECTION: | | |CDEF 21.21(b)(2) DEFECTS/NONCOMPLIANCE | | | | | | | | | | | | | | +------------------------------------------------+-----------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | DEFECTIVE CAPACITORS IN 3 KVA AND 5 KVA INVERTERS. | | | | NUTHERM INTERNATIONAL QUALIFIED AND SUPPLIED 3 KVA AND 5 KVA INVERTERS TO | | TVA (BROWNS FERRY) AND NORTHEAST UTILITIES (CONNECTICUT YANKEE) VIA | | BECHTEL. THE INVERTERS WERE MANUFACTURED BY "HDR UNINTERRUPTIBLE POWER | | SYSTEMS". NUTHERM RECENTLY OBTAINED A COPY OF A SERVICE BULLETIN FROM | | "HDR" STATING THAT CERTAIN CAPACITORS USED IN THE INVERTERS MAY BE | | DEFECTIVE. | | | | FAILURE OF THE CAPACITORS IN QUESTION COULD RESULT IN THE INVERTERS BEING | | UNABLE TO PERFORM THEIR INTENDED FUNCTION. NUTHERM HAS REQUESTED THAT THE | | UTILITIES INSPECT THE HDR INVERTERS FOR THE POTENTIALLY DEFECTIVE | | CAPACITORS AND REPLACE THEM. | | | | A COPY OF THE PART 21 REPORT HAS BEEN FAXED TO WALTER HAASS OF NRR/TQMB. | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 28264 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: NORTH ANNA REGION: 2 |NOTIFICATION DATE: 01/20/95 | |UNIT: [1] [2] [ ] STATE: VA |NOTIFICATION TIME: 14:50 [ET]| |RX TYPE: [1] W-3-LP,[2] W-3-LP |EVENT DATE: 01/20/95 | +------------------------------------------------+EVENT TIME: 13:15[EST]| |NRC NOTIFIED BY: MORRISON |LAST UPDATE DATE: 01/20/95 | |HQ OPS OFFICER: CHAUNCEY GOULD +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |KLINE RDO | |APRE 50.72(b)(2)(vi) OFFSITE NOTIFICATION | | | | | | | | | | | | | | +-----+----------+-------+--------+--------------+--+--------+-----------------+ |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 +------------------------------------------------------------------------------+ | THE LICENSEE REPORTED THAT THEY NOTIFIED THE VIRGINIA DEPARTMENT OF | | ENVIRONMENTAL QUALITY. | | | | THIS NOTIFICATION WAS MADE TO THE STATE OF vIRGINIA BY THE LICENSEE'S WATER | | QUALITY DEPARTMENT DUE TO AN UNUSUAL CHEMICAL RELEASE THAT OCCURRED AT THE | | SITE. THE RELEASE TO THE LAKE WAS DUE TO A LEAK FROM A TANK THAT SUPPLIES | | CHEMICALS TO THE PLANT'S SERVICE WATER SYSTEM. THE LEAK WAS NOTICED AT | | 10:13 ON 1/20/95. THE STATE OF VIRGINIA WAS NOTIFIED OF THE VPDES PERMIT | | RELEASE POINT VIOLATION AT 13:15 ON 1/20/95. THE RI AND THE STATE WERE | | NOTIFIED. | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 28265 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: QUAD CITIES REGION: 3 |NOTIFICATION DATE: 01/20/95 | |UNIT: [1] [2] [ ] STATE: IL |NOTIFICATION TIME: 21:20 [ET]| |RX TYPE: [1] GE-3,[2] GE-3 |EVENT DATE: 01/20/95 | +------------------------------------------------+EVENT TIME: 19:00[CST]| |NRC NOTIFIED BY: SCOTT |LAST UPDATE DATE: 01/20/95 | |HQ OPS OFFICER: CHAUNCEY GOULD +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |JAMES CREED RDO | |AIND 50.72(b)(2)(iii)(D) ACCIDENT MITIGATION | | |NLCO TECH SPEC LCO A/S | | | | | | | | | | | +-----+----------+-------+--------+--------------+--+--------+-----------------+ |UNIT |SCRAM CODE|RX CRIT|INIT PWR| INIT RX MODE |CURR PWR| CURR RX MODE | +-----+----------+-------+--------+-----------------+--------+-----------------+ | 1 | N Y 86 POWER OPERATION | 86 POWER OPERATION | | 2 | N Y 98 POWER OPERATION | 98 POWER OPERATION | | | | | +-----+---------------------------------------------+--------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | THE PLANT ENTERED A 14 DAY LCO ACTION STATEMENT DUE TO THE CONTROL ROOM | | EMERGENCY FILTRATION SYSTEM BEING DECLARED INOPERABLE. | | | | THIS DECLARATION WAS THE RESULT OF AN ENGINEERING DETERMINATION THAT THE | | THERMAL OVERLOAD HEATERS ON THE "A" AND "B" BOOSTER FANS AND THE CONTROL | | ROOM AIR HANDLING UNIT ARE INADEQUATELY SIZED FOR AN UNDERVOLTAGE | | CONDITION. THIS PUT BOTH UNITS IN A 14 DAY TS LCO. ACTIONS ARE UNDER WAY TO | | REPLACE THE AFFECTED OVERLOAD HEATERS WITH APPROPRIATELY SIZED HEATERS. THE | | RI WAS INFORMED. | +------------------------------------------------------------------------------+