U.S. Nuclear Regulatory Commission Operations Center Event Reports For 02/02/95 - 02/03/95 ** EVENT NUMBERS ** 28322 28323 28324 28325 28326 28327 28328 28329 !!!!!!!!! THIS EVENT HAS BEEN RETRACTED. THIS EVENT HAS BEEN RETRACTED !!!!!!! +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 28322 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: TURKEY POINT REGION: 2 |NOTIFICATION DATE: 02/02/95 | |UNIT: [3] [4] [ ] STATE: FL |NOTIFICATION TIME: 01:59 [ET]| |RX TYPE: [3] W-3-LP,[4] W-3-LP |EVENT DATE: 02/02/95 | +------------------------------------------------+EVENT TIME: 01:00[EST]| |NRC NOTIFIED BY: TERRY JONES |LAST UPDATE DATE: 02/02/95 | |HQ OPS OFFICER: JOHN MacKINNON +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |JEROME BLAKE 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 | +-----+----------+-------+--------+-----------------+--------+-----------------+ | 3 | N Y 100 POWER OPERATION | 100 POWER OPERATION | | 4 | N Y 100 POWER OPERATION | 100 POWER OPERATION | | | | | +-----+---------------------------------------------+--------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | UNIT 3 MAY HAVE BEEN BEYOND ITS DESIGN BASIS FOR 27 MINUTES DURING WHICH | | TIME PERIOD BOTH UNIT 3 EMERGENCY DIESEL GENERATORS (EDGs) WERE INOPERABLE. | | | | AT 2045ET 02/01/95, UNIT 3 EDG "3A" WAS DECLARED INOPERABLE DUE TO A SMALL | | COOLING WATER LEAK ON ITS SENSING LINE. THIS PLACED THEM INTO A 72 HOUR | | TECH SPEC ACTION STATEMENT PER TECH SPEC 3.8.1. DURING RAPID START TEST OF | | EDG "3B" AT 2153ET, EDG "3B" FAILED TO START (AIR START SYSTEM SEEMED TO | | OPERATE PROPERLY BUT THE DIESEL DID NOT START) AND IT WAS DECLARED | | INOPERABLE. AT 2153ET, UNIT 3 ENTERED A 2 HOUR TECH SPEC 3.8.1 ACTION | | STATEMENT BECAUSE BOTH OF THEIR EDGs WERE INOPERABLE. UNIT 4 ENTERED A 72 | | HOUR TECH SPEC 3.8.1 ACTION STATEMENT BECAUSE UNIT 4 TECH SPECs REQUIRES | | ONE OPERABLE EDG FROM UNIT 3 (BOTH OF UNIT 4's EDG ARE FULLY OPERABLE). | | UNIT 3 EDG "3A" WAS DECLARED OPERABLE AT 2220ET, AT WHICH TIME UNIT 3 WENT | | FROM AT 2 HOUR TECH SPEC ACTION STATEMENT TO A 72 HOUR ACTION STATEMENT PER | | TECH SPEC 3.8.1 (UNIT 4 EXITED TECH SPEC 3.8.1 ACTION STATEMENT WHEN EDG | | "3A" WAS DECLARED OPERABLE). | | | | PRELIMINARY ENGINEERING REVIEW DURING THE TIME PERIOD WHEN BOTH UNIT 3 EDGs | | WERE DECLARED INOPERABLE (27 MINUTES) FOUND THAT THEY MAY HAVE BEEN BEYOND | | THE DESIGN BASIS OF THE PLANT WHEN BOTH EDGs WERE INOPERABLE. ENGINEERING | | POSTULATED A LOSS OF OFFSITE POWER (LOOP) CONCURRENT WITH A LARGE BREAK | | LOSS OF COOLANT ACCIDENT (LOCA) WHEN BOTH UNIT 3 EDGs WERE INOPERABLE. WITH | | A LOOP, LARGE BREAK LOCA, AND BOTH OF UNIT 3 EDGs INOPERABLE, ADEQUATE CORE | | COOLING MAY HAVE NOT HAVE BEEN POSSIBLE. UNIT 3 & 4 HIGH HEAD SAFETY | | INJECTION PUMPS (TOTAL OF 4 PUMPS) WILL PROVIDE COLD LEG INJECTION TO | | EITHER UNIT. WITH BOTH UNIT 3 EDGs INOPERABLE UNIT 4's HIGH HEAD SAFETY | | INJECTION PUMPS WOULD HAVE SUPPLIED COLD LEG INJECTION TO UNIT 3 BUT IF THE | | LOCA BREAK WAS TOO LARGE, UNIT 3 WOULD HAVE NEEDED EXTRA FLOW FROM ONE ITS | | RESIDUAL HEAT REMOVAL PUMPs (WHICH WOULD BE INOPERABLE DUE TO LOOP AND BOTH | | UNIT 3 EDGs INOPERABLE). | | | | RESIDENT INSPECTOR WILL BE INFORMED BY THE LICENSEE. | | | | ****UPDATE @ 0753ET 02/02/95 BY KNORR TAKEN BY MACKINNON**** | | | | THE ABOVE EVENT IS BEING RETRACTED AFTER FURTHER REVIEW BY LICENSEE. | | LICENSEE WAS NEVER OUTSIDE THEIR DESIGN BASIS. TECH SPEC 3.8.1 STATES THAT | | THEY MUST RETURN THE INOPERABLE EDG TO SERVICE WITHIN TWO HOURS IF BOTH | | EDGs ARE INOPERABLE AND ALSO WITHIN ONE HOUR VERIFY THE OPERABILITY OF | | THEIR STARTUP TRANSFORMER. | | EDG WAS RETURNED TO SERVICE AT 2220ET, AND LICENSEE VERIFIED THAT THEIR | | STARTUP TRANSFORMER WAS OPERABLE. THEREFORE, LICENSEE MET THEIR TECH SPEC | | REQUIREMENTS AND THEY WERE NEVER NOT OUTSIDE THE DESIGN BASIS OF THE PLANT. | | REGION 2 DUTY OFFICER (JEROME BLAKE) NOTIFIED. | | | | RESIDENT INSPECTOR WAS INFORMED BY THE LICENSEE. | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 28323 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: CRYSTAL RIVER REGION: 2 |NOTIFICATION DATE: 02/02/95 | |UNIT: [3] [ ] [ ] STATE: FL |NOTIFICATION TIME: 16:38 [ET]| |RX TYPE: [3] B&W-L-LP |EVENT DATE: 02/02/95 | +------------------------------------------------+EVENT TIME: 15:00[EST]| |NRC NOTIFIED BY: RICHARD SWEENEY |LAST UPDATE DATE: 02/02/95 | |HQ OPS OFFICER: JOSEPH SEBROSKY +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |JEROME BLAKE 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 | +-----+----------+-------+--------+-----------------+--------+-----------------+ | 3 | N Y 100 POWER OPERATION | 100 POWER OPERATION | | | | | | | | | +-----+---------------------------------------------+--------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | MANUAL SWAPOVER OF THE ENGINEERED SAFEGUARD (ES) PUMPS FROM THE BORATED | | WATER STORAGE TANK (BWST) TO THE REACTOR BUILDING (RB) SUMP MAY NOT OCCUR | | IN TIME TO PREVENT VORTEXING IN THE BWST. | | | | EMERGENCY PROCEDURES REQUIRED MANUALLY SWAPPING THE ES PUMP SUCTIONS FROM | | THE BWST TO THE RB SUMP AT THE 5 FOOT LEVEL IN THE BWST. PRELIMINARY | | CALCULATIONS INDICATE A MINIMUM OF 4 FEET IS REQUIRED IN THE BWST TO | | PREVENT VORTEXING AND THEREFORE INSURE ADEQUATE NET POSITIVE SUCTION HEAD | | FOR THE ES PUMPS. INITIATION OF SWAPOVER AT 5 FEET DOES NOT INSURE THAT THE | | TASK WILL BE COMPLETED PRIOR TO REACHING 4 FEET. | | | | THE LICENSEE DISCOVERED THE PROBLEM WHILE RESEARCHING A QUESTION THAT THE | | NRC RESIDENT INSPECTOR HAD ASKED THEM CONCERNING VORTEXING IN THE BWST. THE | | LICENSEE HAS CHANGED THE EMERGENCY PROCEDURES TO REQUIRE THAT THE MANUAL | | SWAPOVER BE INITIATED WHEN THE 15 FOOT LEVEL IN THE BWST IS REACHED AS AN | | INTERIM CORRECTIVE ACTION. | | | | THE LICENSEE WILL INFORM THE RESIDENT INSPECTOR. | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 28324 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: INDIAN POINT REGION: 1 |NOTIFICATION DATE: 02/02/95 | |UNIT: [2] [ ] [ ] STATE: NY |NOTIFICATION TIME: 17:05 [ET]| |RX TYPE: [2] W-4-LP,[3] W-4-LP |EVENT DATE: 02/02/95 | +------------------------------------------------+EVENT TIME: 16:40[EST]| |NRC NOTIFIED BY: PHIL SANTINI |LAST UPDATE DATE: 02/02/95 | |HQ OPS OFFICER: JOSEPH SEBROSKY +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |JENNY JOHANSEN RDO | |APRE 50.72(b)(2)(vi) OFFSITE NOTIFICATION | | | | | | | | | | | | | | +-----+----------+-------+--------+--------------+--+--------+-----------------+ |UNIT |SCRAM CODE|RX CRIT|INIT PWR| INIT RX MODE |CURR PWR| CURR RX MODE | +-----+----------+-------+--------+-----------------+--------+-----------------+ | 2 | N Y 87 POWER OPERATION | 87 POWER OPERATION | | | | | | | | | +-----+---------------------------------------------+--------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | OFFSITE NOTIFICATION DUE TO THE SPILL OF LESS THAN 5 OUNCES OF FUEL OIL. | | | | THE LICENSEE NOTIFIED THE NEW YORK STATE DEPARTMENT OF ENVIRONMENTAL | | CONSERVATION AND THE WESTCHESTER COUNTY DEPARTMENT OF HEALTH OF THE SPILL. | | AT 13:55 AN OIL DELIVERY TRUCK WAS IN THE PROCESS OF COMING ONSITE WHEN THE | | SPILL OF LESS THAN 5 OUNCES WAS NOTICED BY THE INDIAN POINT UNIT 2 COMMAND | | POST. THE SPILL WAS IMMEDIATELY CONTAINED AND CLEANED UP. THE SOURCE OF | | THE OIL LEAKAGE FROM THE TRUCK IS UNDER INVESTIGATION. | | | | THE LICENSEE WILL INFORM THE RESIDENT INSPECTOR. | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 28325 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: INDIAN POINT REGION: 1 |NOTIFICATION DATE: 02/02/95 | |UNIT: [ ] [3] [ ] STATE: NY |NOTIFICATION TIME: 20:51 [ET]| |RX TYPE: [2] W-4-LP,[3] W-4-LP |EVENT DATE: 02/02/95 | +------------------------------------------------+EVENT TIME: 18:30[EST]| |NRC NOTIFIED BY: DAVID O'BRIEN |LAST UPDATE DATE: 02/02/95 | |HQ OPS OFFICER: JOSEPH SEBROSKY +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |JENNY JOHANSEN 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 | +-----+----------+-------+--------+-----------------+--------+-----------------+ | | | | | 3 | N N 0 COLD SHUTDOWN | 0 COLD SHUTDOWN | | | | | +-----+---------------------------------------------+--------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | A SINGLE FAILURE IN THE 480 VOLT AC SWITCHGEAR ROOM VENTILATION SYSTEM | | COULD RESULT IN TEMPERATURES EXCEEDING ANALYZED CONDITIONS IN THAT ROOM. | | | | THE FOLLOWING IS THE TEXT OF A FACSIMILE FROM THE LICENSEE: | | | | "AT 18:30 HOURS ON 2/2/95 A REVIEW OF DRAWINGS VERIFIED THAT A SINGLE | | FAILURE OF THE CONTROL BUILDING 15 FOOT ELEVATION 480 VOLT AC VITAL | | SWITCHGEAR ROOM'S VENTILATION SYSTEM COULD RESULT IN TEMPERATURES EXCEEDING | | ANALYZED CONDITIONS. THE SINGLE FAILURE OF THIS VENTILATION SYSTEM'S | | CONTROL CIRCUIT INTERFACE WITH THE CARBON DIOXIDE FIRE PROTECTION SYSTEM | | COULD RESULT IN ROOM AMBIENT TEMPERATURE EXCEEDING THE 480 VOLT AC | | SWITCHGEAR ANALYSIS LIMIT OF 117øF. THE OPERATIONS DEPARTMENT HAS EXISTING | | PROCEDURES WHICH PROVIDE FOR OPERATOR MITIGATING ACTIONS WHEN THE 15 FOOT | | ELEVATION CONTROL BUILDING 480 VOLT AC SWITCHGEAR ROOM TEMPERATURE REACHES | | THE ALARM SETPOINT OF 101øF. THE ROOM'S TEMPERATURE INDICATION AND ALARM | | ARE AVAILABLE TO THE CONTROL ROOM OPERATORS. THE POSTULATED FAILURE DOES | | NOT AFFECT THIS TEMPERATURE INDICATION AND ALARM CIRCUIT. TO SUMMARIZE, | | THIS EVENT INVOLVES A RANDOM, SINGLE FAILURE OF CONTROL CIRCUIT CABLING | | THAT COULD DUPLICATE A CARBON DIOXIDE FIRE PROTECTION SYSTEM SIGNAL." END | | OF TEXT. | | | | THE LICENSEE WILL INITIATE A DESIGN CHANGE TO PREVENT THE SINGLE FAILURE | | FROM SECURING THE VENTILATION SYSTEM TO THE SWITCHGEAR ROOM. THE SINGLE | | FAILURE IS A SHORT IN THE CABLING IN THE CARBON DIOXIDE FIRE PROTECTION | | CONTROL CIRCUIT. THE SHORT WOULD CAUSE A RELAY TO ENERGIZE WHICH WOULD | | THEN SEND A SIGNAL TO THE VENTILATION SYSTEM TO SECURE THE FANS AND SHUT | | THE LOUVERS THAT SUPPLY VENTILATION TO THE SWITCHGEAR ROOM. THE ROOM | | INVOLVED CONTAINS BOTH TRAINS OF THE VITAL 480 VOLT AC SWITCHGEAR FOR THE | | PLANT. | | | | THE LICENSEE HAS INFORMED THE RESIDENT INSPECTOR. | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 28326 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: QUAD CITIES REGION: 3 |NOTIFICATION DATE: 02/02/95 | |UNIT: [ ] [2] [ ] STATE: IL |NOTIFICATION TIME: 21:44 [ET]| |RX TYPE: [1] GE-3,[2] GE-3 |EVENT DATE: 02/02/95 | +------------------------------------------------+EVENT TIME: 18:05[CST]| |NRC NOTIFIED BY: DARYL NOHR |LAST UPDATE DATE: 02/02/95 | |HQ OPS OFFICER: JOSEPH SEBROSKY +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |JOHN JACOBSON 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 Y 30 POWER OPERATION | 30 POWER OPERATION | | | | | +-----+---------------------------------------------+--------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | RHR PUMPS INADVERTENTLY STARTED DURING A MONTHLY SURVEILLANCE PROCEDURE. | | | | DURING PERFORMANCE OF QUAD CITIES OPERATING PROCEDURE 1000-27 "FLUSHING THE | | RHR HEAT EXCHANGER USING TWO RHR SERVICE WATER PUMPS", THE '2C' AND '2D' | | RHR PUMPS WERE STARTED INSTEAD OF THE RHR SERVICE WATER PUMPS. THIS IS | | CONSIDERED AN INVALID ESF ACTUATION DUE TO A PERSONNEL ERROR AND IS | | REPORTABLE IN ACCORDANCE WITH THE LICENSEE'S REPORTABILITY MANUAL. | | | | THE REACTOR OPERATOR PERFORMING THE TEST STARTED THE PUMPS FROM THE CONTROL | | ROOM AND SECURED THE PUMPS AFTER REALIZING THE ERROR. ONE PUMP RAN FOR | | APPROXIMATELY 1 MINUTE AND THE OTHER PUMP RAN FOR APPROXIMATELY 2 MINUTES | | BEFORE BEING SECURED. WHILE RUNNING, THE RHR PUMPS TOOK SUCTION FROM THE | | TORUS AND RETURNED THE WATER TO THE TORUS VIA THE MINIMUM FLOW LINES. THE | | MONTHLY SURVEILLANCE PROCEDURE HAS SUBSEQUENTLY BEEN PERFORMED | | SATISFACTORILY. | | | | THE LICENSEE HAS INFORMED THE RESIDENT INSPECTOR. | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 28327 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: PILGRIM REGION: 1 |NOTIFICATION DATE: 02/02/95 | |UNIT: [1] [ ] [ ] STATE: MA |NOTIFICATION TIME: 22:34 [ET]| |RX TYPE: [1] GE-3 |EVENT DATE: 02/02/95 | +------------------------------------------------+EVENT TIME: 21:59[EST]| |NRC NOTIFIED BY: MARTIN MANTENFEL |LAST UPDATE DATE: 02/02/95 | |HQ OPS OFFICER: JOSEPH SEBROSKY +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |JENNY JOHANSEN 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 100 POWER OPERATION | 100 POWER OPERATION | | | | | | | | | +-----+---------------------------------------------+--------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | HIGH PRESSURE COOLANT INJECTION SYSTEM (HPCI) DECLARED INOPERABLE DUE TO AN | | INVERTER FAILURE. | | | | APPARENTLY THE INVERTER OVERHEATED WHICH RESULTED IN A CONTROL ROOM | | ANNUNCIATOR FOR "HPCI INVERTER FAILURE". THE INVERTER HAS AN AUTOMATIC | | RESET FUNCTION WHICH CLEARED THE ALARM ONCE AUTOMATICALLY WITHOUT OPERATOR | | ACTION. THE ANNUNCIATOR THEN ALARMED AGAIN AND DID NOT RESET. THE | | OPERATORS TURNED THE POWER OFF TO THE HPCI INVERTER AND DECLARED HPCI | | INOPERABLE. THE LICENSEE HAS ENTERED A 14 DAY LCO. RCIC AND ALL OTHER | | ECCS ARE OPERABLE AT THIS TIME. | | | | THE LICENSEE HAS INFORMED THE RESIDENT INSPECTOR AND WILL INFORM THE | | MASSACHUSETTS EMERGENCY MANAGEMENT AGENCY. | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 28328 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: HADDAM NECK REGION: 1 |NOTIFICATION DATE: 02/03/95 | |UNIT: [1] [ ] [ ] STATE: CT |NOTIFICATION TIME: 00:39 [ET]| |RX TYPE: [1] W-4-LP |EVENT DATE: 02/02/95 | +------------------------------------------------+EVENT TIME: 22:15[EST]| |NRC NOTIFIED BY: C GLADDING |LAST UPDATE DATE: 02/03/95 | |HQ OPS OFFICER: JOHN MacKINNON +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |JENNY JOHANSEN 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 +------------------------------------------------------------------------------+ | DURING FULL FLOW DYNAMIC TESTING TWO REDUNDANT MOTOR OPERATED SERVICE WATER | | BYPASS VALVES FAILED TO FULLY OPEN. | | SERVICE WATER BYPASS VALVES (SW-MOV-837 "A" & "B") FAILED TO FULLY OPEN | | DURING FULL FLOW DYNAMIC TESTING. THESE BYPASS VALVES WOULD BE USED TO | | PREVENT CLOGGING AND/OR TO BYPASS A CLOGGED SERVICE WATER FILTER DURING A | | POST LOSS OF COOLANT ACCIDENT (LOCA), AND TO SUPPLY COOLING WATER TO THE | | CONTAINMENT AIR RECIRCULATION FAN COOLERS (FOUR FAN COOLERS). IF THE | | SERVICE WATER FILTER PLUGGED UP AND IF NEITHER OF THE SERVICE WATER BYPASS | | VALVES COULD BE OPENED DURING A POST LOCA EVENT, THEY WOULD BE OUTSIDE THE | | THEIR DESIGN BASIS OF THEIR PLANT. | | PER GENERIC LETTER 89-10 (MOV TEST PROGRAM), LICENSEE WAS PERFORMING FOR | | THE FIRST TIME A FULL FLOW DYNAMIC TEST OF THE BYPASS VALVES WITH FULL | | DIFFERENTIAL PRESSURE ACROSS THE VALVE (80psid). SERVICE WATER BYPASS | | VALVE (SW-MOV-837 "A") FAILED TO FULLY OPEN WHEN TESTED ON THE MORNING OF | | 02/02/95. AT 2215ET, SERVICE WATER BYPASS VALVE (SW-MOV-837 "B") FAILED TO | | FULLY OPEN WHEN IT WAS TESTED. BOTH VALVES TRAVELLED IN THE OPEN DIRECTION | | FOR ABOUT 1.5 SECONDS BEFORE THEY STOPPED OPENING (TAKES 9 SECONDS TO FULLY | | OPEN THE BYPASS VALVES). IN BOTH CASES THE BYPASS VALVE FAILED TO OPEN | | BECAUSE THEIR MOTOR OPERATED VALVE TORQUE SWITCH TRIPPED. THE SETTING OF | | THE TORQUE SWITCHES WERE CHECKED AND WERE FOUND TO BE AT THEIR RECOMMENDED | | SETTINGS AS SPECIFIED BY THE MANUFACTURER & SUPPLIER. SINCE THIS WAS THE | | FIRST TIME THAT THESE BYPASS VALVES HAD BEEN OPERATED UNDER SUCH CONDITIONS | | AND THE BYPASS VALVES FAILED TO FULLY OPEN, THE LICENSEE RESET THE TORQUE | | SWITCH TRIP SETPOINT TO A HIGHER TRIP SETPOINT. LICENSEE REPERFORMED FULL | | FLOW TESTING OF THE BYPASS VALVES AND THEY OPERATED PROPERLY. | | | | RESIDENT INSPECTOR WILL BE INFORMED BY THE LICENSEE. | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |FUEL CYCLE FACILITY | |EVENT NUMBER: 28329 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: ALLIED-SIGNAL INC. |NOTIFICATION DATE: 02/03/95 | | RXTYPE: URANIUM HEXAFLUORIDE PRODUCTION |NOTIFICATION TIME: 03:00 [ET]| |COMMENTS: UF6 CONVERSION (DRY PROCESS) |EVENT DATE: 02/03/95 | | |EVENT TIME: 00:20[CST]| | |LAST UPDATE DATE: 02/03/95 | | CITY: METROPOLIS REGION: 3 +-----------------------------+ | COUNTY: MASSAC STATE: IL |PERSON ORGANIZATION| |LICENSE#: SUB-526 AGREEMENT: Y |JOHN JACOBSON RDO | | DOCKET: 04003392 |MAL KNAPP (NMS) EO | +------------------------------------------------+JACK GROBE REG3 | |NRC NOTIFIED BY: RONALD YATES |CALDWELL FEMA | |HQ OPS OFFICER: JOHN MacKINNON |CONGEL AEOD | +------------------------------------------------+HENRY BAILEY AEOD | |EMERGENCY CLASS: ALERT | | |10 CFR SECTION: | | |AAEC 50.72(a)(1)(i) EMERGENCY DECLARED | | | | | | | | | | | | | | +------------------------------------------------+-----------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | APPROXIMATELY 200 grams OF URANIUM HEXAFLUORIDE LEAKED FROM A LOOSE | | CONNECTION ON A 14 TON CYLINDER INTO THEIR FEED MATERIAL BUILDING. NOBODY | | INJURED. | | | | ALLIED SIGNAL INC., METROPOLIS, IL. CALLED IN THE FOLLOWING REPORT. | | | | LICENSEE WAS FLUSHING A MANIFOLD TO A 14 TON CYLINDER IN PREPARATIONS FOR | | FILLING THE CYLINDER WITH URANIUM HEXAFLUORIDE. WHILE THEY WERE FLUSHING | | THE MANIFOLD (STANDARD OPERATING PROCEDURE BEFORE FILLING THE CYLINDER), | | THE EVACUATION LINE WAS OVERCOME (THIS IS A NORMAL OCCURRENCE). ONE OF THE | | VALVES ON THE EVACUATION LINE WAS CRACKED OPEN (WAS NOT CHECKED CLOSED - | | OPERATOR VALVING ERROR) AND IT LEAKED INTO ANOTHER PIGTAIL ON ANOTHER 14 | | TON CYLINDER. THIS PIGTAIL CONNECTION WAS NOT TIGHT AND THE URANIUM | | HEXAFLUORIDE LEAKED OUT OF THIS CONNECTION. APPROXIMATELY 200 grams OF | | URANIUM HEXAFLUORIDE WAS RELEASED INTO THE FEED MATERIAL BUILDING IN ABOUT | | 90 TO 120 SECONDS. | | | | ALL PERSONNEL (BETWEEN 10 TO 15 PEOPLE) EVACUATED THE FEED MATERIAL | | BUILDING. OPERATORS EVACUATING THE BUILDING ISOLATED THE LEAK BEFORE | | LEAVING THE BUILDING. FIVE EMERGENCY RESPONSE PEOPLE ENTERED THE FEED | | MATERIAL BUILDING WEARING FULL SAFETY GEAR (SAFETY GEAR INCLUDES SCUBAs & | | BEING FULLY DRESSED OUT FOR THE EVENT). A WHITE CLOUD (URANIUM | | HEXAFLUORIDE) WAS SEEN IN THE BUILDING. AS FAR AS THE LICENSEE KNOWS, NO | | URANIUM HEXAFLUORIDE ESCAPED OUTSIDE THE BUILDING AND THEREFORE NO EXPOSURE | | TO THE GENERAL PUBLIC OCCURRED. NOBODY EVACUATED FROM THE FEED MATERIAL | | BUILDING WAS EXPOSED TO THE URANIUM HEXAFLUORIDE AND NOBODY WAS INJURED. | | EMERGENCY RESPONSE PERSONNEL WILL TAKE A URINE TEST THIS MORNING TO MAKE | | SURE THEY WERE NOT EXPOSED TO THE URANIUM HEXAFLUORIDE. LICENSEE WAS IN AN | | ALERT CLASSIFICATION FROM 0020 CST UNTIL 0110 CST. LICENSEE SAID THAT THE | | RELEASE AMOUNT WAS SO SMALL THAT THEY DO NOT HAVE TO INFORM ANY STATE, | | LOCAL, OR OTHER GOVERNMENT AGENCY OF THIS EVENT. LICENSEE ALSO SAID THAT AT | | THIS TIME THEY DO NOT PLANT TO MAKE A PRESS RELEASE ABOUT THIS EVENT. | +------------------------------------------------------------------------------+