U.S. Nuclear Regulatory Commission Operations Center Event Reports For 03/24/97 - 03/25/97 ** EVENT NUMBERS ** 32003 32004 32005 32006 32007 32008 +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 32003 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: GRAND GULF REGION: 4 |NOTIFICATION DATE: 03/24/97 | |UNIT: [1] [ ] [ ] STATE: MS |NOTIFICATION TIME: 12:31 [ET]| |RX TYPE: [1] GE-6 |EVENT DATE: 03/24/97 | +------------------------------------------------+EVENT TIME: 10:45[CST]| |NRC NOTIFIED BY: KARL EHRHARDT |LAST UPDATE DATE: 03/24/97 | |HQ OPS OFFICER: RUDY KARSCH +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |TOM STETKA RDO | |AINA 50.72(b)(2)(iii)(A) POT UNABLE TO SAFE SD | | |AINB 50.72(b)(2)(iii)(B) POT RHR INOP | | |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 +------------------------------------------------------------------------------+ | SPARE 480-VOLT CIRCUIT BREAKERS WERE RACKED TO A POSITION FOR WHICH THEY | | ARE NOT SEISMICALLY QUALIFIED. BOTH DIVISIONS OF 480-VOLT POWER ARE | | AFFECTED; THEREFORE, THIS CONDITION REPRESENTS A POTENTIAL COMMON MODE | | FAILURE MECHANISM. | | | | THREE CIRCUIT BREAKERS FOR DIVISION-1 480-VOLT POWER AND ONE CIRCUIT | | BREAKER FOR DIVISION-2 POWER WERE FOUND TO BE RACKED PAST THE DISCONNECT | | POSITION. WITH THE CIRCUIT BREAKERS IN THIS POSITION, THEIR SEISMIC | | QUALIFICATION IS IN QUESTION. SINCE BOTH DIVISIONS ARE AFFECTED, OPERATION | | OF THE SAFETY SYSTEMS COULD HAVE BEEN COMPROMISED. THE LICENSEE IS | | CONDUCTING AN INVESTIGATION TO DETERMINE THE CONSEQUENCES OF THIS | | CONDITION. | | | | THE LICENSEE PLANS TO INFORM THE NRC RESIDENT INSPECTOR. | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 32004 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: HATCH REGION: 2 |NOTIFICATION DATE: 03/24/97 | |UNIT: [1] [2] [ ] STATE: GA |NOTIFICATION TIME: 14:12 [ET]| |RX TYPE: [1] GE-4,[2] GE-4 |EVENT DATE: 03/22/97 | +------------------------------------------------+EVENT TIME: 06:27[EST]| |NRC NOTIFIED BY: RON MUSGROVE |LAST UPDATE DATE: 03/24/97 | |HQ OPS OFFICER: RUDY KARSCH +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |BRUNO URYC 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 | | 2 | N N 0 REFUELING | 0 REFUELING | | | | | +-----+---------------------------------------------+--------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | A LICENSEE EMPLOYEE COMING OFF SHIFT COLLAPSED IN THE PARKING LOT DUE TO A | | HEART ATTACK. THE INDIVIDUAL WAS PRONOUNCED DEAD AT THE HOSPITAL. | | | | THE LICENSEE INFORMED THE NRC RESIDENT INSPECTOR. | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 32005 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: COOK REGION: 3 |NOTIFICATION DATE: 03/24/97 | |UNIT: [ ] [2] [ ] STATE: MI |NOTIFICATION TIME: 15:13 [ET]| |RX TYPE: [1] W-4-LP,[2] W-4-LP |EVENT DATE: 03/24/97 | +------------------------------------------------+EVENT TIME: 14:50[EST]| |NRC NOTIFIED BY: BOB VASEY |LAST UPDATE DATE: 03/24/97 | |HQ OPS OFFICER: RUDY KARSCH +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |ROGER LANKSBURY 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 | +-----+----------+-------+--------+-----------------+--------+-----------------+ | | | | | 2 | N Y 100 POWER OPERATION | 100 POWER OPERATION | | | | | +-----+---------------------------------------------+--------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | IDENTIFICATION OF A CRACK IN A FLOOD-UP TUBE USED TO PROTECT ELECTRICAL | | CABLES FROM MOISTURE INTRUSION WHILE UNIT 2 WAS OPERATING AT 100% POWER | | | | THE ELECTRICAL PENETRATIONS FOR CONTAINMENT ARE LOCATED BELOW THE | | CALCULATED CONTAINMENT FLOOD LEVEL FOLLOWING A LOSS OF COOLANT ACCIDENT | | (LOCA). TO PROTECT THE ELECTRICAL CABLES IN THE PENETRATION ROOM, WHICH | | ARE NOT QUALIFIED FOR A FLOOD ENVIRONMENT, THE CABLES ARE ENCLOSED INSIDE | | STAINLESS STEEL FLOOD-UP TUBES. DURING AN INSPECTION ON UNIT 1, WHICH IS | | CURRENTLY IN A REFUELING OUTAGE, NINE TUBES WERE FOUND TO HAVE CRACKS. THE | | LICENSEE PLANS TO REPLACE THESE TUBES. | | | | BECAUSE THE USE OF FLOOD-UP TUBES IS COMMON TO BOTH UNITS, AN INSPECTION OF | | THE UNIT 2 FLOOD-UP TUBES WAS ALSO PERFORMED. A FLOOD-UP TUBE ON UNIT 2 | | WHICH CONTAINS A POWER CABLE FOR THE CONTAINMENT RECIRCULATION (CEQ) FAN | | HAD A CRACK. OPERATION OF THIS FAN IS NECESSARY FOLLOWING A LOCA TO | | MITIGATE THE CONSEQUENCES OF THE ACCIDENT. THE LICENSEE BELIEVES THAT THIS | | CONDITION EXISTED CONCURRENT WITH THE INOPERABILITY OF THE OTHER TRAIN OF | | CEQ FANS. THIS IS A CONDITION OUTSIDE THE DESIGN BASIS FOR THE PLANT. WITH | | ONE TRAIN INOPERABLE, AS IS THE CASE NOW, UNIT 2 IS IN A 48-HOUR LIMITING | | CONDITION FOR OPERATION (LCO) PER TECHNICAL SPECIFICATION 3.6.5.3. | | | | THE LICENSEE HAS REPAIRED THE CRACKED FLOOD-UP TUBE WITH A SPECIAL CHEMICAL | | AND TEMPERATURE RESISTANT EPOXY. WHEN THE EPOXY COMPLETES ITS CURE TIME, | | THE LICENSEE PLANS TO EXIT THE TECHNICAL SPECIFICATION LCO. THIS IS | | EXPECTED TO OCCUR BEFORE THE EXPIRATION OF THE 48-HOUR LCO. THE CRACKED | | FLOOD-UP TUBE WILL BE REPLACED DURING THE UPCOMING FALL OUTAGE. | | | | THE LICENSEE INFORMED THE NRC RESIDENT INSPECTOR. | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 32006 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: POINT BEACH REGION: 3 |NOTIFICATION DATE: 03/24/97 | |UNIT: [1] [2] [ ] STATE: WI |NOTIFICATION TIME: 16:50 [ET]| |RX TYPE: [1] W-2-LP,[2] W-2-LP |EVENT DATE: 03/24/97 | +------------------------------------------------+EVENT TIME: 14:15[CST]| |NRC NOTIFIED BY: SCOTT PFAFF |LAST UPDATE DATE: 03/24/97 | |HQ OPS OFFICER: RUDY KARSCH +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |ROGER LANKSBURY 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 N 0 COLD SHUTDOWN | 0 COLD SHUTDOWN | | 2 | N N 0 REFUELING | 0 REFUELING | | | | | +-----+---------------------------------------------+--------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | THE CONTROL ROOM VENTILATION SYSTEM IS OUT OF SERVICE BECAUSE OF TWO | | CONDITIONS THAT WOULD PERMIT INLEAKAGE IN EXCESS OF ALLOWED LIMITS. | | | | AN IMPROPERLY FITTED DUCT ACCESS DOOR IN THE CABLE SPREADING ROOM WOULD | | ALLOW EXCESSIVE INLEAKAGE WHICH THE LICENSEE ESTIMATES WOULD EXCEED THE | | 10-CFM LIMIT FOR MODE 4 OPERATION. THE EXHAUST FAN IN THE CONTROL ROOM | | LAVATORY HAS A BACKDRAFT DAMPER WHICH DOES NOT CLOSE FULLY DUE TO | | CORROSION. THE LICENSEE ESTIMATES THAT THE INLEAKAGE WOULD EXCEED THE | | 55.2-CFM LIMIT FOR MODE 2 AND HIGHER OPERATION. THE LICENSEE IS CORRECTING | | THESE PROBLEMS AND STATED THAT THE CONTROL ROOM VENTILATION SYSTEM IS NOT | | REQUIRED TO BE OPERABLE IN THE PLANTS' CURRENT OPERATING MODES. | | | | THE LICENSEE INFORMED THE NRC RESIDENT INSPECTOR. | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |FUEL CYCLE FACILITY | |EVENT NUMBER: 32007 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: PORTSMOUTH GASEOUS DIFFUSION PLANT |NOTIFICATION DATE: 03/24/97 | | RXTYPE: URANIUM ENRICHMENT FACILITY |NOTIFICATION TIME: 18:13 [ET]| |COMMENTS: 2 DEMOCRACY CENTER |EVENT DATE: 03/24/97 | | 6903 ROCKLEDGE DRIVE |EVENT TIME: 16:00[EST]| | BETHESDA, MD 20817 (301)564-3200 |LAST UPDATE DATE: 03/24/97 | | CITY: PIKETON REGION: 3 +-----------------------------+ | COUNTY: PIKE STATE: OH |PERSON ORGANIZATION| |LICENSE#: GDP-2 AGREEMENT: N |ROGER LANKSBURY RDO | | DOCKET: 0707002 |FREDERICK COMBS/NMSS EO | +------------------------------------------------+RICHARD BARRETT/AEOD AEOD | |NRC NOTIFIED BY: STEVE MAY | | |HQ OPS OFFICER: RUDY KARSCH | | +------------------------------------------------+ | |EMERGENCY CLASS: NOT APPLICABLE | | |10 CFR SECTION: | | |NLTR LICENSEE 24 HR REPORT | | | | | | | | | | | | | | +------------------------------------------------+-----------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | AT 1421 EST ON 03/20/97, THE X-330 PROCESS BUILDING'S CASCADE AUTOMATIC | | DATA PROCESSING UF6 SMOKE DETECTOR, SSWL, LOCATED AT THE TAILS SIDE | | WITHDRAWAL, ACTUATED. UF6 WAS RELEASED INTO THE BUILDING, BUT IT WAS NOT | | REPORTED BECAUSE AIR SAMPLES AND RADIATION SURVEYS WERE NEGATIVE. HOWEVER, | | THE PROCESS WAS SHUT DOWN; AND ON 03/24/97, A FAILED VALVE BELLOWS WAS | | DISCOVERED, CONFIRMING THE ALARM'S VALIDITY THAT AN ACTUAL RELEASE HAD | | OCCURRED. THERE WERE NO HAZARDOUS MATERIALS, RADIOACTIVE CONTAMINATION, OR | | PERSONNEL EXPOSURES ASSOCIATED WITH THIS RELEASE. | | | | THE LICENSEE INFORMED THE NRC RESIDENT INSPECTOR. | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 32008 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: ZION REGION: 3 |NOTIFICATION DATE: 03/24/97 | |UNIT: [1] [2] [ ] STATE: IL |NOTIFICATION TIME: 18:17 [ET]| |RX TYPE: [1] W-4-LP,[2] W-4-LP |EVENT DATE: 03/24/97 | +------------------------------------------------+EVENT TIME: 16:10[CST]| |NRC NOTIFIED BY: MARK STODDART |LAST UPDATE DATE: 03/24/97 | |HQ OPS OFFICER: RUDY KARSCH +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |ROGER LANKSBURY 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 | | 2 | N N 0 COLD SHUTDOWN | 0 COLD SHUTDOWN | | | | | +-----+---------------------------------------------+--------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | THE LICENSEE DETERMINED THAT THE HEPA FILTERS INSIDE CONTAINMENT HAVE | | ALUMINUM SEPARATORS THAT WERE NOT ACCOUNTED FOR IN THE CALCULATIONS FOR THE | | POST-ACCIDENT RELEASE OF HYDROGEN DUE TO REACTION WITH NaOH. | | | | THE CHARCOAL UNITS' HEPA FILTERS HAVE ALUMINUM SEPARATORS THAT WERE NOT | | ACCOUNTED FOR IN THE TOTAL AMOUNT OF ALUMINUM INSIDE CONTAINMENT, AND THIS | | PLACES ZION IN AN UNANALYZED CONDITION. EACH HEPA FILTER HAS 7.5 POUNDS OF | | ALUMINUM AND 620 SQUARE FEET OF EXPOSED SURFACE, AND THERE ARE 18 HEPA | | FILTERS IN EACH UNITS' CONTAINMENT. THE MAXIMUM VALUE FOR ALLOWED EXPOSED | | SURFACE AREA OF ALUMINUM IS 915 SQUARE FEET. | | | | THE LICENSEE IS INVESTIGATING THE USE OF VINYL COATED SEPARATORS AND | | FILTERS DESIGNED WITHOUT SEPARATORS. | | | | THE LICENSEE INFORMED THE NRC RESIDENT INSPECTOR. | +------------------------------------------------------------------------------+