U.S. Nuclear Regulatory Commission Operations Center Event Reports For 10/20/94 - 10/21/94 ** EVENT NUMBERS ** 27929 27930 27931 27932 +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 27929 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: BYRON REGION: 3 |NOTIFICATION DATE: 10/19/94 | |UNIT: [1] [2] [ ] STATE: IL |NOTIFICATION TIME: 23:00 [ET]| |RX TYPE: [1] W-4-LP,[2] W-4-LP |EVENT DATE: 10/19/94 | +------------------------------------------------+EVENT TIME: 19:15[CDT]| |NRC NOTIFIED BY: RICH WILLIAMS |LAST UPDATE DATE: 10/20/94 | |HQ OPS OFFICER: WILLIAM HUFFMAN +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |BRENT CLAYTON 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 N 0 COLD SHUTDOWN | 0 COLD SHUTDOWN | | 2 | N Y 99 POWER OPERATION | 99 POWER OPERATION | | | | | +-----+---------------------------------------------+--------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | UNISOLABLE SULFURIC ACID TANK SPILL. | | | | AN UNISOLABLE LEAK DEVELOPED WHILE ATTEMPTING TO REPAIR A VALVE ON A | | SULFURIC ACID STORAGE TANK. THE TANK CONTAINED APPROXIMATELY 5000 GALLONS | | OF SULFURIC ACID WHEN THE LEAK OCCURRED. THE SULFURIC ACID LEAKED INTO A | | BERM SURROUNDING THE TANK AND ALSO LEAKED DIRECTLY INTO THE CIRCULATING | | WATER SYSTEM FLUME. THE LEAK STOPPED AT 2203 CDT WHEN MOST OF THE CONTENTS | | OF THE TANK DRAINED OUT. | | | | TWO CONTRACTORS WORKING ON THE TANK VALVE REPAIR WERE INJURED AND | | TRANSPORTED TO THE SAINT ANTHONY MEDICAL CENTER IN ROCKFORD, ILLINOIS. | | ABOUT 200 GALLONS OF SULFURIC ACID LEAKED PAST A FLANGE IN THE BERM ONTO | | THE GROUND COVERING ABOUT 70 SQUARE FEET OF AREA. THE REMAINING 4800 | | GALLONS LEAKED INTO THE CIRC WATER SYSTEM. CIRC WATER BLOWDOWN WAS SECURED | | AT 1940 CDT AND THE LICENSEE BELIEVES THAT THERE HAS BEEN NO RELEASE TO THE | | ENVIRONMENT. | | | | A HAZARDOUS MATERIAL EMERGENCY WAS DECLARED AT 2020 CDT AND THE SITE'S | | HAZARDOUS MATERIALS TEAM RESPONDED TO THE SCENE. ASSESSMENT AND CLEANUP | | OPERATIONS ARE BEING COORDINATED BY THE HAZMAT TEAM LEADER AND THE SITE | | CHEMIST. THE SPILL HAS HAD NO AFFECT ON PLANT OPERATIONS. NO SIGNIFICANT | | FUMES HAVE BEEN REPORTED AND THE REDUCED pH OF THE CIRC WATER SYSTEM WILL | | NOT CAUSE ANY CIRC WATER SYSTEM CONCERNS. | | | | OFFSITE NOTIFICATIONS TO FEDERAL(NATIONAL RESPONSE CENTER), STATE, AND | | LOCAL AUTHORITIES HAVE BEEN MADE. THE LICENSEE ANTICIPATES A PRESS | | RELEASE. | | | | THE NRC RESIDENT INSPECTOR HAS BEEN INFORMED. | | | | ***COURTESY CALL @ 2029ET 10/20/94 BY SCOT SWANSON TAKEN BY MACKINNON*** | | | | AT 2203CT 10/19/94 SULFURIC ACID LEAKING TO THE GROUND WAS STOPPED. | | | | AT 0315CT 10/20/94, pH WAS RESTORED TO NORMAL LEVELS IN THEIR FLUME (FOR | | CIRC WATER PUMPS). | | | | AT 0330CT 10/20/94 HAZMAT EMERGENCY WAS TERMINATED AND AREA WAS POSTED TO | | PREVENT ENTRY INTO SULFURIC ACID SPILL AREA. | | | | AT 0338CT 10/20/94 CIRCULATING WATER SYSTEM BLOWDOWN WAS RESTORED TO NORMAL | | OPERATION. | | | | CLEANING UP THE SULFURIC SPILL IS SCHEDULED FOR 10/21/94. | | | | OF THE TWO INJURED PERSONNEL, ONE WAS RELEASED FROM THE HOSPITAL AFTER | | TREATMENT, WHILE THE OTHER INDIVIDUAL REMAINS UNDER HOSPITAL CARE (ACID | | BURNS TO HIS SKIN). R3DO (BRENT CLAYTON) NOTIFIED. | | | | RESIDENT INSPECTOR WAS INFORMED BY THE LICENSEE. | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 27930 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: MILLSTONE REGION: 1 |NOTIFICATION DATE: 10/20/94 | |UNIT: [ ] [2] [ ] STATE: CT |NOTIFICATION TIME: 03:41 [ET]| |RX TYPE: [1] GE-3,[2] CE,[3] W-4-LP |EVENT DATE: 10/20/94 | +------------------------------------------------+EVENT TIME: 03:23[EDT]| |NRC NOTIFIED BY: STRONG |LAST UPDATE DATE: 10/20/94 | |HQ OPS OFFICER: CHAUNCEY GOULD +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: UNUSUAL EVENT +-----------------------------+ |10 CFR SECTION: |GLENN MEYER RDO | |AAEC 50.72(a)(1)(i) EMERGENCY DECLARED |GARY HOLAHAN EO | | |STINEDURF FEMA | | | | | | | | | | +-----+----------+-------+--------+--------------+--+--------+-----------------+ |UNIT |SCRAM CODE|RX CRIT|INIT PWR| INIT RX MODE |CURR PWR| CURR RX MODE | +-----+----------+-------+--------+-----------------+--------+-----------------+ | | | | | 2 | N N 0 REFUELING | 0 REFUELING | | | | | +-----+---------------------------------------------+--------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | THE PLANT DECLARED AN NOUE DUE TO HEIGHTENED AWARENESS BECAUSE OF A SERVICE | | WATER LEAK AFFECTING THEIR 120 VOLT DC. | | | | A SERVICE WATER LEAK ONTO THE ELECTRICAL SWITCHGEAR HAS CAUSED A GROUND ON | | A 120VDC VITAL BUS, WHICH THE LICENSEE IS PRESENTLY SEARCHING IN ORDER TO | | LOCATE AND ISOLATE. THE LEAK WAS ONTO A NON VITAL 4160 BUS WHICH HAS SINCE | | BEEN DE-ENERGIZED, BUT THIS DID NOT CLEAR THE GROUND ON THE 120VDC BUS. THE | | LEAK OCCURRED WHILE THE LICENSEE WAS SETTING UP AND DRAINING THE SERVICE | | WATER HEADER IN PREPARATION FOR SOME WORK. THE PLANT IS CURRENTLY STABLE | | AND HAS NO VITAL AC OUT OF SERVICE. THE RI WAS INFORMED ALONG WITH STATE | | AND LOCAL AGENCIES. | | | | ***UPDATE AT 05:28 ON 10/20/94 TO GOULD FROM BONNER*** | | | | THE VITAL DC BUS GROUND HAS BEEN ISOLATED. CAUSE OF GROUND IS STILL | | UNKNOWN. | | | | ***UPDATE @ 1201 ET ON 10/20/94 BY BONNER TAKEN BY MACKINNON*** | | | | UNUSUAL EVENT TERMINATED AT 1152 ET. LICENSEE ISOLATED THE GROUND ON THE | | 125VDC BUS. LICENSEE INSPECTED THE VITAL ELECTRICAL SWITCHGEAR AND DID NOT | | FIND ANY GROUNDS. LICENSEE WILL CORRECT THE GROUND PROBLEM ON NON VITAL | | LOADS BEFORE RETURNING THEM TO SERVICE. LICENSEE NOTIFIED STATE & LOCAL | | OFFICIALS OF THE TERMINATION OF THE UNUSUAL EVENT. R1DO (GLENN MEYER), | | EO(AL CHAFFEE), & FEMA (WITSBERGER) NOTIFIED. | | | | LICENSEE NOTIFIED RESIDENT INSPECTOR THAT THE UNUSUAL EVENT WAS TERMINATED. | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 27931 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: FARLEY REGION: 2 |NOTIFICATION DATE: 10/20/94 | |UNIT: [1] [ ] [ ] STATE: AL |NOTIFICATION TIME: 08:36 [ET]| |RX TYPE: [1] W-3-LP,[2] W-3-LP |EVENT DATE: 10/19/94 | +------------------------------------------------+EVENT TIME: 08:35[CDT]| |NRC NOTIFIED BY: HOLLEY |LAST UPDATE DATE: 10/20/94 | |HQ OPS OFFICER: CHAUNCEY GOULD +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |CHRIS CHRISTENSEN RDO | |NINF INFORMATION ONLY | | | | | | | | | | | | | | +-----+----------+-------+--------+--------------+--+--------+-----------------+ |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 +------------------------------------------------------------------------------+ | THE LICENSEE REPORTED AN OIL SPILL TO THE ALABAMA ENVIRONMENTAL AGENCY AND | | TO THE U.S. COAST GUARD. | | | | THE LICENSEE REPORTED THAT THE OIL SEPARATOR OUTSIDE OF THE TURBINE | | BUILDING LEAKED APPROXIMATELY 15 GALS OF OIL INTO THE STORM DRAIN, WHICH | | DRAINS TO THE SETTLING POND. THE OIL IS BEING CLEANED UP. THE OIL DID | | NOT GO TO THE RIVER. THE LICENSEE IS INVESTIGATING THE CAUSE OF THE OIL | | LEAK. THE RI WAS INFORMED. | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 27932 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: DIABLO CANYON REGION: 4 |NOTIFICATION DATE: 10/20/94 | |UNIT: [ ] [2] [ ] STATE: CA |NOTIFICATION TIME: 13:00 [ET]| |RX TYPE: [1] W-4-LP,[2] W-4-LP |EVENT DATE: 10/20/94 | +------------------------------------------------+EVENT TIME: 09:03[PDT]| |NRC NOTIFIED BY: JIM DYE |LAST UPDATE DATE: 10/20/94 | |HQ OPS OFFICER: JOHN MacKINNON +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |LARRY YANDELL 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 +------------------------------------------------------------------------------+ | EMERGENCY DIESEL GENERATOR # 22 UNEXPECTEDLY STARTED DURING SURVEILLANCE | | TEST. | | | | DURING PERFORMANCE OF SURVEILLANCE TEST PROCEDURE M-16Q3 (TEST OF VITAL BUS | | AUTO TRANSFER FUNCTION), EMERGENCY DIESEL GENERATOR 22 (EDG #22) | | INADVERTENTLY AUTO STARTED WHEN IT SHOULD NOT HAVE. EDG #22 SHOULD NOT | | HAVE AUTO STARTED BECAUSE THE AUTO TRANSFER OF 4KV VITAL BUS "H" FROM | | AUXILIARY POWER TO STARTUP POWER WAS SUCCESSFUL. LICENSEE SUSPENDED THE | | TEST TO FIND THE ROOT CAUSE OF THE EDG #22 AUTO START. THE SURVEILLANCE | | TEST PROCEDURE IS SUPPOSED TO TEST THE TRANSFER OF THE VITAL BUS FROM THE | | AUXILIARY FEEDER TO THE STARTUP FEEDER. THE LICENSEE SAID THAT AS FAR AS | | THEY CAN TELL, THERE WAS NO LOSS OF VOLTAGE TO VITAL BUS "H" DURING THE | | AUTO TRANSFER. | | | | RESIDENT INSPECTOR WAS INFORMED BY THE LICENSEE. | +------------------------------------------------------------------------------+