U.S. Nuclear Regulatory Commission Operations Center Event Reports For 03/25/97 - 03/26/97 ** EVENT NUMBERS ** 30903 32004 32009 32010 32011 32012 32013 32014 32015 32016 32017 +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 30903 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: BRAIDWOOD REGION: 3 |NOTIFICATION DATE: 08/21/96 | |UNIT: [1] [ ] [ ] STATE: IL |NOTIFICATION TIME: 14:49 [ET]| |RX TYPE: [1] W-4-LP,[2] W-4-LP |EVENT DATE: 08/21/96 | +------------------------------------------------+EVENT TIME: 13:30[CDT]| |NRC NOTIFIED BY: ACKERMAN |LAST UPDATE DATE: 03/25/97 | |HQ OPS OFFICER: BOB STRANSKY +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |MILLER 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 | +-----+----------+-------+--------+-----------------+--------+-----------------+ | 1 | N Y 100 POWER OPERATION | 100 POWER OPERATION | | | | | | | | | +-----+---------------------------------------------+--------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | LICENSEE DISCOVERED GAP IN BORAFLEX SHEET GREATER THAN MAXIMUM SIZE ASSUMED | | IN CRITICALITY ANALYSIS | | | | WHILE REVIEWING NEUTRON ATTENUATION (BLACKNESS) TEST DATA FOR BORAFLEX | | SHEETS INSTALLED IN THE SPENT FUEL POOL, THE LICENSEE DISCOVERED A GAP OF | | AS MUCH AS NINE INCHES IN BORAFLEX MATERIAL LOCATED AT RACK LOCATION L2A9. | | THE SPENT FUEL POOL CRITICALITY ANALYSIS ASSUMES A MAXIMUM GAP OF FOUR | | INCHES. THE LICENSEE REPORTED THAT NO FUEL IS CURRENTLY BEING STORED AT | | THIS RACK LOCATION, OR IN ANY ADJACENT LOCATIONS. THE NRC RESIDENT | | INSPECTOR WILL BE INFORMED BY THE LICENSEE. | | | | * * * UPDATE AT 1919 EST ON 3/25/97 FROM NEYHART TAKEN BY KARSCH * * * | | THE LICENSEE HAS REANALYZED REGION 1 SPENT FUEL POOL RACK MODULES ASSUMING | | NO BOROFLEX PRESENT. AN INTERIM TECH SPEC AMENDMENT WAS SUBMITTED TO | | ESTABLISH LIMITS ON SOLUBLE BORON CONCENTRATION. THIS WAS DONE TO | | COMPENSATE FOR BOROFLEX DEGRADATION. IN ADDITIONAL ANALYSIS, BORAL WAS | | ASSUMED TO SURROUND ALL REGION 1 LOCATIONS. INVESTIGATION HAS REVEALED | | THAT PERIPHERAL LOCATIONS ARE NOT SURROUNDED BY BORAL. THE LICENSEE WILL | | RELOCATE ANY FUEL IN QUESTIONABLE LOCATIONS. TWENTY FUEL ASSEMBLIES ARE | | AFFECTED. FUEL RELOCATION IS SCHEDULED TO START ON 3/26/97 AT 0600 CST. | | THE LICENSEE INFORMED THE NRC RESIDENT INSPECTOR. R3DO (LANKSBURY) | | NOTIFIED. | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |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: 03/25/97 | |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 CONTRACT 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. | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |OTHER NUCLEAR MATERIAL | |EVENT NUMBER: 32009 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |LICENSEE: OHIO STATE UNIVERSITY |NOTIFICATION DATE: 03/25/97 | | CITY: COLUMBUS REGION: 3 |NOTIFICATION TIME: 07:30 [ET]| | COUNTY: STATE: OH |EVENT DATE: 02/25/97 | |LICENSE#: 34-00293-02 AGREEMENT: N |EVENT TIME: 00:00[EST]| | DOCKET: |LAST UPDATE DATE: 03/25/97 | | +-----------------------------+ | |PERSON ORGANIZATION| | |LANKSBURY RDO | | | | +------------------------------------------------+ | |NRC NOTIFIED BY: ROBERT PETERSON | | |HQ OPS OFFICER: BOB STRANSKY | | +------------------------------------------------+ | |EMERGENCY CLASS: NOT APPLICABLE | | |10 CFR SECTION: | | |BAB2 20.2201(a)(1)(ii) LOST/STOLEN LNM>10X | | | | | | | | | | | | | | +------------------------------------------------+-----------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | MISSING SHIPMENT OF PHOSPHORUS-32 | | | | THE LICENSEE REPORTED THAT A SHIPMENT CONTAINING 250ęCi OF P-32, IN THE | | FORM OF ALPHA-DATP, IS MISSING. THE SHIPMENT MAY HAVE BEEN DELIVERED BY | | FEDERAL EXPRESS ON 2/25/97 (IT WAS LISTED AS PART OF A 50-60 ITEM DELIVERY | | MADE ON THAT DAY), ALTHOUGH THE LICENSEE DOES NOT KNOW IF THE ITEM WAS | | ACTUALLY RECEIVED, AS THERE WAS ONLY ONE SIGNATURE ACKNOWLEDGING RECEIPT OF | | ALL ITEMS. THE PACKAGE WAS A 'LIMITED QUANTITY' SHIPMENT, AND DID NOT HAVE | | ANY SPECIAL DOT LABELING. THE LICENSEE HAS SEARCHED THE RECEIVING AREA AND | | ALL LABORATORIES, BUT HAS NOT BEEN ABLE TO LOCATE THE PACKAGE. | | | | NRC REGION 3 WAS CONTACTED BY THE LICENSEE REGARDING THIS EVENT ON 3/4/97. | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 32010 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: PRAIRIE ISLAND REGION: 3 |NOTIFICATION DATE: 03/25/97 | |UNIT: [1] [2] [ ] STATE: MN |NOTIFICATION TIME: 12:59 [ET]| |RX TYPE: [1] W-2-LP,[2] W-2-LP |EVENT DATE: 03/25/97 | +------------------------------------------------+EVENT TIME: 11:03[CST]| |NRC NOTIFIED BY: BILL MATHER |LAST UPDATE DATE: 03/25/97 | |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 | | | | | | | | | | | | | | +-----+----------+-------+--------+--------------+--+--------+-----------------+ |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 HOT STANDBY | 0 HOT STANDBY | | | | | +-----+---------------------------------------------+--------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | THE LICENSEE IDENTIFIED A DEFICIENCY IN THE PLANT RESPONSE TO A COMPLETE | | LOSS OF FEEDWATER ATWS EVENT. THE MOTOR DRIVEN AUX FEED PUMPS WOULD TRIP. | | FOLLOWING A COMPLETE LOSS OF FEEDWATER ATWS, AT 126 SECONDS, STEAM | | GENERATOR PRESSURE DECREASES BELOW 700 PSIA. AT THIS POINT THE MOTOR | | DRIVEN AUX FEED PUMPS WOULD TRIP ON LOW DISCHARGE PRESSURE TO PREVENT PUMP | | RUNOUT. THIS PUMP TRIP IS NOT WITHIN THE PLANT'S LICENSING BASIS. THE | | LICENSEE INFORMED THE NRC RESIDENT INSPECTOR. | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 32011 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: HATCH REGION: 2 |NOTIFICATION DATE: 03/25/97 | |UNIT: [1] [ ] [ ] STATE: GA |NOTIFICATION TIME: 14:55 [ET]| |RX TYPE: [1] GE-4,[2] GE-4 |EVENT DATE: 03/25/97 | +------------------------------------------------+EVENT TIME: 13:00[EST]| |NRC NOTIFIED BY: JAMES BARNES |LAST UPDATE DATE: 03/25/97 | |HQ OPS OFFICER: RUDY KARSCH +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |DAVID VERRELLI RDO | |AINC 50.72(b)(2)(iii)(C) POT UNCNTRL RAD REL | | | | | | | | | | | | | | +-----+----------+-------+--------+--------------+--+--------+-----------------+ |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 DISCOVERED AN ERROR IN THEIR ACCIDENT ANALYSIS. | | | | THE FOLLOWING IS THE TEXT OF A FAX RECEIVED BY THE OPERATIONS CENTER: | | "THE ROD WITHDRAWAL ERROR, RWE, TRANSIENT ANALYSIS MAY NOT ALWAYS BE | | CONSERVATIVE. GENERAL ELECTRIC'S ANALYSIS SOMETIMES ASSUMES THE ROD BLOCK | | MONITOR (RBM) IS OPERABLE AND THEREFORE IS AVAILABLE TO PREVENT FUEL | | CLADDING FROM EXCEEDING THE DESIGN LIMIT OF ONE PERCENT PLASTIC STRAIN | | DURING AN RWE EVENT. HOWEVER, THE PLANT'S TECHNICAL SPECIFICATIONS | | (3.3.2.1) DO NOT ALWAYS REQUIRE THE RBMs TO BE OPERABLE. SPECIFICALLY, | | WITH POWER ABOVE 90% RATED THERMAL POWER AND MINIMUM CRITICAL POWER RATIO | | (MCPR) ABOVE 1.4O, THE SPECIFICATIONS DO NOT REQUIRE THE RBM TO BE | | OPERABLE. THE TRANSIENT ANALYSIS PERFORMED BY GENERAL ELECTRIC MAY ASSUME | | THE RBM IS OPERABLE UNDER THIS COMBINATION OF POWER AND MCPR AND THEREFORE | | MAY RELY ON THE RBM TO PREVENT THE FUEL CLADDING FROM EXCEEDING ONE PERCENT | | PLASTIC STRAIN DURING AN RWE EVENT. THIS EVENT THEN IS ONE THAT ALONE | | COULD HAVE PREVENTED THE FULFILLMENT OF THE SAFETY FUNCTION OF A SYSTEM | | (THE RBM) THAT ARE NEEDED TO CONTROL THE RELEASE OF RADIOACTIVE MATERIAL | | AND MITIGATE THE CONSEQUENCES OF A TRANSIENT. | | | | "GENERAL ELECTRIC HAS COMPLETED CALCULATIONS FOR THE CURRENT CYCLE FOR UNIT | | 1 AND HAS DETERMINED THAT NO ROD PATTERNS USED AND PLANNED FOR THIS CYCLE | | WILL RESULT IN THE CLADDING EXCEEDING THE ONE PERCENT PLASTIC STRAIN LIMIT | | EVEN WITH THE RBM INOPERABLE. AN OPERATING ORDER HAS BEEN PUT INTO PLACE | | TO ENSURE THE RBM IS OPERABLE AS ASSUMED IN THE RWE TRANSIENT ANALYSIS." | | THE LICENSEE INFORMED THE NRC RESIDENT INSPECTOR. | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |FUEL CYCLE FACILITY | |EVENT NUMBER: 32012 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: PADUCAH GASEOUS DIFFUSION PLANT |NOTIFICATION DATE: 03/25/97 | | RXTYPE: URANIUM ENRICHMENT FACILITY |NOTIFICATION TIME: 15:00 [ET]| |COMMENTS: 2 DEMOCRACY CENTER |EVENT DATE: 03/24/97 | | 6903 ROCKLEDGE DRIVE |EVENT TIME: 17:25[CST]| | BETHESDA, MD 20817 (301)564-3200 |LAST UPDATE DATE: 03/25/97 | | CITY: PADUCAH REGION: 3 +-----------------------------+ | COUNTY: McCRACKEN STATE: KY |PERSON ORGANIZATION| |LICENSE#: GDP-1 AGREEMENT: Y |ROGER LANKSBURY RDO | | DOCKET: 0707001 |FREDERICK COMBS EO | +------------------------------------------------+ | |NRC NOTIFIED BY: W.F. CAGE |R. BARRETT AEOD | |HQ OPS OFFICER: RUDY KARSCH | | +------------------------------------------------+ | |EMERGENCY CLASS: NOT APPLICABLE | | |10 CFR SECTION: | | |OCBB 76.120(c)(2)(ii) EQUIP DISABLED/FAILS | | | | | | | | | | | | | | +------------------------------------------------+-----------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | THE LICENSEE DISCOVERED THAT ONE HIGH PRESSURE FIRE WATER (HPFW) SPRINKLER | | IN BUILDING C-337 IS TOO FAR FROM THE CEILING. SUBSEQUENT INSPECTIONS IN | | BUILDING C-337 AND BUILDING C-333 IDENTIFIED ONE AREA IN EACH BUILDING THAT | | DID NOT HAVE ADEQUATE COVERAGE BY THE HPFW SYSTEM. THESE SPRINKLER SYSTEMS | | WERE DECLARED INOPERABLE AND HOURLY FIRE PATROLS INITIATED. THE LICENSEE | | IS UNDERTAKING REPAIRS. THE LICENSEE INFORMED THE NRC RESIDENT INSPECTOR. | | | | HOO NOTE: SEE EVENTS #31841, 31850, 31972, 31977, AND 32002 FOR OTHER FIRE | | PROTECTION REPORTS. | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 32013 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: COMANCHE PEAK REGION: 4 |NOTIFICATION DATE: 03/25/97 | |UNIT: [ ] [2] [ ] STATE: TX |NOTIFICATION TIME: 17:05 [ET]| |RX TYPE: [1] W-4-LP,[2] W-4-LP |EVENT DATE: 03/25/97 | +------------------------------------------------+EVENT TIME: 16:01[CST]| |NRC NOTIFIED BY: MIKE SMITH |LAST UPDATE DATE: 03/25/97 | |HQ OPS OFFICER: RUDY KARSCH +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |TOM STETKA RDO | |AARC 50.72(b)(1)(v) OTHER ASMT/COMM INOP | | | | | | | | | | | | | | +-----+----------+-------+--------+--------------+--+--------+-----------------+ |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 +------------------------------------------------------------------------------+ | THE PLANT LOST ASSESSMENT CAPABILITY BECAUSE THE PLANT COMPUTER WAS SHUT | | DOWN FOR A DESIGN MODIFICATION FOR LONGER THAN EIGHT HOURS. IN AN | | EMERGENCY THE COMPUTER COULD BE RESTORED TO OPERABLE STATUS WITHIN 15 | | MINUTES. THE LICENSEE WILL NOT SUBMIT AN LER FOR THIS EVENT. THE LICENSEE | | INFORMED THE NRC RESIDENT INSPECTOR. | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |FUEL CYCLE FACILITY | |EVENT NUMBER: 32014 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: PORTSMOUTH GASEOUS DIFFUSION PLANT |NOTIFICATION DATE: 03/25/97 | | RXTYPE: URANIUM ENRICHMENT FACILITY |NOTIFICATION TIME: 17:07 [ET]| |COMMENTS: 2 DEMOCRACY CENTER |EVENT DATE: 03/25/97 | | 6903 ROCKLEDGE DRIVE |EVENT TIME: 01:20[EST]| | BETHESDA, MD 20817 (301)564-3200 |LAST UPDATE DATE: 03/25/97 | | CITY: PIKETON REGION: 3 +-----------------------------+ | COUNTY: PIKE STATE: OH |PERSON ORGANIZATION| |LICENSE#: GDP-2 AGREEMENT: N |ROGER LANKSBURY RDO | | DOCKET: 0707002 |FREDERICK COMBS EO | +------------------------------------------------+ | |NRC NOTIFIED BY: ERIC R. SMITH |R. BARRETT AEOD | |HQ OPS OFFICER: RUDY KARSCH | | +------------------------------------------------+ | |EMERGENCY CLASS: NOT APPLICABLE | | |10 CFR SECTION: | | |NLTR LICENSEE 24 HR REPORT | | | | | | | | | | | | | | +------------------------------------------------+-----------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | THE OPERATOR AT THE "X-342A" FEED VAPORIZATION AND FLUORINE GENERATION | | FACILITY RECEIVED AN AUDIBLE AND VISUAL ALARM INDICATING STEAM SHUTDOWN OF | | AUTOCLAVE NUMBER "2". THE INVESTIGATION OF THE ALARM REVEALED THAT BOTH | | "A" AND "B" HIGH LEVEL CONDENSATE ALARMS WERE ACTIVATED CAUSING THE STEAM | | TO SHUT DOWN. THE CONDENSATE LEVEL SHUT-OFF SYSTEM IS PROVIDED TO PREVENT | | OVERPRESSURIZATION OR A NUCLEAR CRITICALITY IN AN AUTOCLAVE FOLLOWING A | | POSTULATED UF6 RELEASE. THE SYSTEM FUNCTIONS TO DETECT EITHER A DRAIN LINE | | PLUG OR RESTRICTION AND TO SHUT OFF THE STEAM FLOW TO THE AUTOCLAVE. | | | | THE AUTOCLAVE WAS IMMEDIATELY SHUT DOWN AND DECLARED INOPERABLE BY THE | | LICENSEE. NO RELEASE OR RADIOACTIVE CONTAMINATION EXPOSURES ARE ASSOCIATED | | WITH THIS ACTUATION. THE LICENSEE IS STILL INVESTIGATING THE CAUSE OF THE | | ALARM. THE LICENSEE INFORMED THE NRC RESIDENT INSPECTOR. | | | | REFERENCE TSR-PORTS REVISION 5, SECTION 2.1.3.7. | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 32015 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: HATCH REGION: 2 |NOTIFICATION DATE: 03/25/97 | |UNIT: [ ] [2] [ ] STATE: GA |NOTIFICATION TIME: 17:47 [ET]| |RX TYPE: [1] GE-4,[2] GE-4 |EVENT DATE: 03/25/97 | +------------------------------------------------+EVENT TIME: 12:06[EST]| |NRC NOTIFIED BY: JAMES BARNES |LAST UPDATE DATE: 03/25/97 | |HQ OPS OFFICER: RUDY KARSCH +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |DAVID VERRELLI 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 REFUELING | 0 REFUELING | | | | | +-----+---------------------------------------------+--------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | MONITORING INSTRUMENTATION ISOLATED DUE TO HUMAN ERROR. | | | | AN I&C TECH INSTALLING A JUMPER CONTACTED THE CABINET, BLOWING FUSE | | "2C61F020", RESULTING IN THE FOLLOWING PRIMARY CONTAINMENT ISOLATION VALVE | | CLOSURES: "2P33F010, 2P33F011, 2P33F014, AND 2P33F015". THESE ARE THE | | ISOLATION VALVES FOR THE FISSION PRODUCT MONITORS AND THE HYDROGEN | | ANALYZERS. THE FUSE HAS BEEN REPLACED AND THE MONITORS RESTORED TO | | OPERABILITY. THE AFFECTED EQUIPMENT IS NOT REQUIRED IN THE PLANT'S CURRENT | | OPERATING MODE. THE LICENSEE INFORMED THE NRC RESIDENT INSPECTOR. | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 32016 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: VERMONT YANKEE REGION: 1 |NOTIFICATION DATE: 03/25/97 | |UNIT: [1] [ ] [ ] STATE: VT |NOTIFICATION TIME: 18:23 [ET]| |RX TYPE: [1] GE-4 |EVENT DATE: 03/25/97 | +------------------------------------------------+EVENT TIME: 13:00[EST]| |NRC NOTIFIED BY: BRYAN CROKE |LAST UPDATE DATE: 03/25/97 | |HQ OPS OFFICER: RUDY KARSCH +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |LEANNE HARRISON 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 | +-----+----------+-------+--------+-----------------+--------+-----------------+ | 1 | N Y 100 POWER OPERATION | 100 POWER OPERATION | | | | | | | | | +-----+---------------------------------------------+--------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | A DESIGN BASIS LOCA IN CONJUNCTION WITH A CONTAINMENT PURGE WOULD DAMAGE | | THE STANDBY GAS TREATMENT SYSTEM (SBGTS). | | | | THE LICENSEE IS PRESENTLY ALLOWED TO OPERATE THE SBGTS, FOR BRIEF PERIODS | | OF TIME FOR CONTAINMENT PURGE, DURING START UP AND SHUT DOWN WITH THE | | REACTOR IN THE RUN MODE. WITH THE SBGTS IN PURGE, 18-INCH VALVES FROM THE | | DRYWELL (SB-7A) AND THE TORUS (SB-7B) ARE CONNECTED TO AN 8-INCH SBGTS | | ADMISSION VALVE (SB-6). IF A LOCA SHOULD OCCUR, GENERATING A CONTAINMENT | | ISOLATION SIGNAL, THE SB-6 VALVE REQUIRES TWO SECONDS TO CLOSE. DURING | | THESE TWO SECONDS, DRYWELL PRESSURE WOULD REACH 38 PSIG. THE HOUSING FOR | | THE SBGTS HAS A DESIGN PRESSURE OF 2 PSIG. THE RESULTING HIGH FLOWS AND | | OVERPRESSURIZATION WOULD RUPTURE THE SBGTS. | | | | CORRECTIVE MODIFICATIONS ARE UNDER INVESTIGATION BY THE LICENSEE. OPENING | | VALVES SB-7A AND SB-7B, TO INITIATE A CONTAINMENT PURGE WHILE AT POWER, HAS | | BEEN RESTRICTED BY A VALVE TAG-OUT PROGRAM PENDING A SOLUTION TO THE | | PROBLEM. | | | | THE LICENSEE NOTED THAT THIS PROBLEM WAS IDENTIFIED BY LASALLE IN EVENT | | REPORT #31824 AND IS COVERED BY INPO REPORT #PS 6649. THE LICENSEE INFORMED | | THE NRC RESIDENT INSPECTOR. | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |GENERAL INFORMATION or OTHER | |EVENT NUMBER: 32017 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |LICENSEE: VICTOREEN, INC. |NOTIFICATION DATE: 03/25/97 | | CITY: SOLON REGION: 3 |NOTIFICATION TIME: 18:23 [ET]| | COUNTY: STATE: OH |EVENT DATE: 04/15/96 | |LICENSE#: AGREEMENT: N |EVENT TIME: 18:23[EST]| | DOCKET: |LAST UPDATE DATE: 03/25/97 | | +-----------------------------+ | |PERSON ORGANIZATION| | |ROGER LANKSBURY RDO | | | | +------------------------------------------------+ | |NRC NOTIFIED BY: LINDA NASH |VERN HODGE NRR | |HQ OPS OFFICER: RUDY KARSCH | | +------------------------------------------------+ | |EMERGENCY CLASS: NOT APPLICABLE | | |10 CFR SECTION: | | |CDEG 21.21(c)(3)(i) DEFECTS/NONCOMPLIANCE | | | | | | | | | | | | | | +------------------------------------------------+-----------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | RESISTOR NETWORKS IN MODEL 530 INSTRUMENTS CAN CRACK, CAUSING IT TO BECOME | | NON-FUNCTIONAL. MEASUREMENTS MADE WITH DEFECTIVE INSTRUMENTS COULD RESULT | | IN ADDITIONAL RADIATION EXPOSURES. IF THE INSTRUMENT IS USED AS A | | CALIBRATION STANDARD, ALL CALIBRATED DEVICES WOULD BE IN ERROR. SURVEY | | METERS AND PERSONAL DOSIMETERS COULD BE AFFECTED. RADIATION WORKERS COULD | | BE EXPOSED UNNECESSARILY, POSSIBLY EXCEEDING ALLOWED LIMITS. | +------------------------------------------------------------------------------+