U.S. Nuclear Regulatory Commission Operations Center Event Reports For 08/28/98 - 08/31/98 ** EVENT NUMBERS ** 34705 34706 34707 34708 34709 34710 34711 34712 34713 34714 34715 +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 34705 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: CRYSTAL RIVER REGION: 2 |NOTIFICATION DATE: 08/28/98 | |UNIT: [3] [ ] [ ] STATE: FL |NOTIFICATION TIME: 03:04 [ET]| |RX TYPE: [3] B&W-L-LP |EVENT DATE: 08/27/98 | +------------------------------------------------+EVENT TIME: 23:48[EDT]| |NRC NOTIFIED BY: W. K. BANDHAUER |LAST UPDATE DATE: 08/28/98 | |HQ OPS OFFICER: FANGIE JONES +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |LEN WERT RDO | |ARPS 50.72(b)(2)(ii) RPS ACTUATION | | |AESF 50.72(b)(2)(ii) ESF ACTUATION | | | | | | | | | | | +-----+----------+-------+--------+--------------+--+--------+-----------------+ |UNIT |SCRAM CODE|RX CRIT|INIT PWR| INIT RX MODE |CURR PWR| CURR RX MODE | +-----+----------+-------+--------+-----------------+--------+-----------------+ | 3 | M/R Y 100 POWER OPERATION | 0 HOT STANDBY | | | | | | | | | +-----+---------------------------------------------+--------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | MANUAL REACTOR TRIP DUE TO CLOSURE OF TWO MAIN STEAM ISOLATION VALVES. | | | | THE REACTOR WAS MANUALLY TRIPPED, BY PROCEDURE, FOLLOWING AN INADVERTENT | | CLOSURE OF TWO MAIN STEAM ISOLATION VALVES (MSIVs). INSTRUMENTATION AND | | CONTROL TECHNICIANS WERE IN THE PROCESS OF TROUBLESHOOTING A HALF-TRIP ON | | THE MAIN STEAM LINE ISOLATION ON THE 'A' TRAIN FOR THE 'A' STEAM GENERATOR | | (OTSG). THE CLOSURE APPEARS TO BE DUE TO AN ERROR IN THE TROUBLESHOOTING | | INSTRUCTIONS AND IS BEING INVESTIGATED. | | | | FOLLOWING THE TRIP, EMERGENCY FEEDWATER (EFW) ACTUATED ON LOW LEVEL IN THE | | 'A' OTSG, CAUSED BY THE LOSS OF FEED FLOW FROM THE 'A' FEEDWATER PUMP DUE | | TO THE CLOSURE OF THE MSIVs. THE 'A' OTSG WILL CONTINUE BEING FED WITH EFW | | AND STEAMED TO ATMOSPHERE UNTIL AUXILIARY STEAM IS AVAILABLE FOR NORMAL | | FEEDWATER PUMPS AND THE MSIVs ARE OPENED TO ALLOW NORMAL STEAMING VIA THE | | TURBINE BYPASS VALVES. | | | | THE LICENSEE INFORMED THE NRC RESIDENT INSPECTOR. | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |GENERAL INFORMATION or OTHER | |EVENT NUMBER: 34706 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |LICENSEE: ENGINEERING AND TESTING SERVICES |NOTIFICATION DATE: 08/28/98 | | CITY: MEMPHIS REGION: 2 |NOTIFICATION TIME: 12:41 [ET]| | COUNTY: STATE: TN |EVENT DATE: 08/28/98 | |LICENSE#: TN R79200 AGREEMENT: Y |EVENT TIME: 00:00[EDT]| | DOCKET: |LAST UPDATE DATE: 08/28/98 | | +-----------------------------+ | |PERSON ORGANIZATION| | |LEN WERT RDO | | | | +------------------------------------------------+ | |NRC NOTIFIED BY: DEBORAH SHULTS | | |HQ OPS OFFICER: BOB STRANSKY | | +------------------------------------------------+ | |EMERGENCY CLASS: NOT APPLICABLE | | |10 CFR SECTION: | | |NAGR AGREEMENT STATE | | | | | | | | | | | | | | +------------------------------------------------+-----------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | AGREEMENT STATE REPORT | | | | THE STATE OF TENNESSEE WAS INFORMED BY ENGINEERING AND TESTING SERVICES | | THAT A TROXLER MODEL 3411B MOISTURE/DENSITY GAUGE WAS STOLEN OVERNIGHT. THE | | GAUGE WAS LOCKED IN A CAR OWNED BY AN EMPLOYEE, WHO WAS TAKING IT TO A JOB | | SITE IN MISSISSIPPI. THE CAR WAS PARKED AT THE EMPLOYEE'S RESIDENCE IN HORN | | LAKE, MS. THIS MORNING, THE EMPLOYEE DISCOVERED THAT HIS CAR HAD BEEN | | STOLEN. | | | | THE STATE OF TENNESSEE HAS CONTACTED LOCAL LAW ENFORCEMENT AGENCIES, AND IS | | PLANNING TO MAKE A PRESS RELEASE REGARDING THE THEFT. | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 34707 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: SEABROOK REGION: 1 |NOTIFICATION DATE: 08/28/98 | |UNIT: [1] [ ] [ ] STATE: NH |NOTIFICATION TIME: 14:58 [ET]| |RX TYPE: [1] W-4-LP |EVENT DATE: 08/28/98 | +------------------------------------------------+EVENT TIME: 10:04[EDT]| |NRC NOTIFIED BY: L. FRITZ |LAST UPDATE DATE: 08/28/98 | |HQ OPS OFFICER: BOB STRANSKY +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |WILLIAM COOK 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 +------------------------------------------------------------------------------+ | OPEN FUEL STORAGE BUILDING DOOR RENDERED FUEL AIR HANDLING SYSTEM | | INOPERABLE | | | | AT 1004, FUEL STORAGE BUILDING (FSB) DOOR F-301 WAS FOUND TO BE TIED OPEN. | | THIS CONDITION REDUCED THE FSB TO ATMOSPHERE DIFFERENTIAL PRESSURE BELOW | | THE MINIMUM VALUE (0.25" WATER) REQUIRED FOR THE FUEL AIR HANDLING (FAH) | | EMERGENCY AIR CLEANING SYSTEMS TO BE CONSIDERED OPERABLE. THIS CONDITION | | WAS REPORTED TO THE SHIFT MANAGER AT 1130. AT THE TIME OF THE EVENT, A 75 | | LB TOOL WAS BEING HUNG FROM A JIB CRANE NEAR THE FUEL POOL. THE LICENSEE IS | | CURRENTLY INSTALLING NEW FUEL RACKS IN THE POOL. | | | | UPON DISCOVERY, THE LICENSEE IMMEDIATELY CLOSED THE DOOR, AND SUSPENDED | | CRANE OPERATION WITH LOADS OVER THE SPENT FUEL POOL UNTIL SUFFICIENT | | DIFFERENTIAL PRESSURE WAS RESTORED. ALL FSB RADIATION MONITORS WERE | | OPERATING AT THE TIME OF THE EVENT, AND NO CHANGE IN RADIATION LEVELS | | OCCURRED. NO MOVEMENTS OF IRRADIATED FUEL WERE IN PROGRESS AT THE TIME OF | | THE EVENT. THE NRC RESIDENT INSPECTOR WILL BE INFORMED BY THE LICENSEE. | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |GENERAL INFORMATION or OTHER | |EVENT NUMBER: 34708 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |LICENSEE: COOPER ENERGY SERVICES |NOTIFICATION DATE: 08/28/98 | | CITY: GROVE CITY REGION: 1 |NOTIFICATION TIME: 15:43 [ET]| | COUNTY: STATE: PA |EVENT DATE: 08/28/98 | |LICENSE#: AGREEMENT: N |EVENT TIME: 00:00[EDT]| | DOCKET: |LAST UPDATE DATE: 08/28/98 | | +-----------------------------+ | |PERSON ORGANIZATION| | |WILLIAM COOK RDO | | | | +------------------------------------------------+LEN WERT R2DO | |NRC NOTIFIED BY: RONALD G. BILLIG |PATRICK HILAND R3DO | |HQ OPS OFFICER: BOB STRANSKY |DALE POWERS R4DO | +------------------------------------------------+VERN HODGE (FAX) NRR | |EMERGENCY CLASS: NOT APPLICABLE | | |10 CFR SECTION: | | |CCCC 21.21 UNSPECIFIED PARAGRAPH | | | | | | | | | | | | | | +------------------------------------------------+-----------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | 10 CFR PART 21 REPORT REGARDING ENTERPRISE DSR-4 AND DSRV-4 EMERGENCY | | DIESEL GENERATOR STARTING AIR PRESSURE SWITCHES | | | | "THE FUNCTION OF THE STARTING AIR PRESSURE SWITCHES (PS-3B & 4B) IS TO | | DE-ENERGIZE THE STARTING AIR SOLENOID VALVES ON THE CONDITION THAT THE | | STANDBY DIESEL GENERATOR DOES NOT START WITH AN EMERGENCY START SIGNAL. THE | | PRESSURE SWITCHES ARE SET FOR A LOW PRESSURE LIMIT (TYPICALLY 150 PSI | | FALLING) TO ENSURE A SUFFICIENT VOLUME OF AIR IN THE STARTING AIR RECEIVERS | | TO ALLOW THE OPERATOR TO HAVE MORE THAN TWO ADDITIONAL MANUAL STARTS. WHEN | | THE STANDBY DIESEL GENERATOR IS RUNNING IN AN EMERGENCY MODE AND A | | NON-ESSENTIAL PNEUMATIC SHUTDOWN SENSOR TRIPS, STARTING AIR PRESSURE IS | | VENTED FROM THE SYSTEM. AT THE LOW LIMIT SETTING THE STARTING AIR PRESSURE | | SWITCHES WILL OPEN, DEENERGIZING THE DEACTIVATE SHUTDOWN SOLENOID VALVE. | | WITH THE SOLENOID VALVE DE-ENERGIZED, THE SHUTDOWN CIRCUIT WILL RECOGNIZE | | ANY NON-ESSENTIAL SHUTDOWN SIGNAL RESULTING IN A SHUTDOWN OF THE STANDBY | | DIESEL GENERATOR. | | | | "TO CORRECT THIS CONDITION THE PRESSURE SWITCHES NEED TO BE REWIRED TO A | | DIFFERENT LOCATION." | | | | AFFECTED UTILITIES: ALL ENTERPRISE EDGs EXCEPT THOSE AT PLANT VOGTLE. | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 34709 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: NINE MILE POINT REGION: 1 |NOTIFICATION DATE: 08/28/98 | |UNIT: [1] [ ] [ ] STATE: NY |NOTIFICATION TIME: 17:40 [ET]| |RX TYPE: [1] GE-2,[2] GE-5 |EVENT DATE: 08/20/98 | +------------------------------------------------+EVENT TIME: 19:25[EDT]| |NRC NOTIFIED BY: J. KRONENBITTER |LAST UPDATE DATE: 08/28/98 | |HQ OPS OFFICER: BOB STRANSKY +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |WILLIAM COOK 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 +------------------------------------------------------------------------------+ | CORE SPRAY PUMP MOTOR COOLER FLOW LESS THAN DESIGN SPECIFICATION | | | | ON 8/20/98, AN INVESTIGATION OF CORE SPRAY PUMP '122' MOTOR COOLER FLOW | | RATE REVEALED ACTUAL FLOW TO BE LESS THAN THAT SPECIFIED ON THE MOTOR | | DESIGN DRAWING. THE MEASURED FLOW RATE WAS 0.6 GPM, WHILE THE SPECIFIED | | FLOW RATE WAS 4.5 GPM. THE CORE SPRAY PUMP WAS DECLARED INOPERABLE AND A | | 7-DAY LCO WAS ENTERED. REPAIRS WERE COMPLETED ON 8/22/98, AND ADEQUATE | | MOTOR COOLER FLOW WAS VERIFIED. | | | | THIS CONDITION IS BEING EVALUATED BY DESIGN ENGINEERING AND THE MOTOR | | MANUFACTURER TO DETERMINE IF THE CORE SPRAY PUMP WOULD HAVE BEEN ABLE TO | | PERFORM ITS DESIGN FUNCTION UNDER POSTULATED DESIGN BASIS LOCA CONDITIONS | | WITH DEGRADED MOTOR COOLER FLOW. EVIDENCE EXISTS TO DEMONSTRATE THAT THIS | | CONDITION HAS EXISTED SINCE AT LEAST 1995. THE NRC RESIDENT INSPECTOR HAS | | BEEN INFORMED. | | | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 34710 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: THREE MILE ISLAND REGION: 1 |NOTIFICATION DATE: 08/28/98 | |UNIT: [1] [ ] [ ] STATE: PA |NOTIFICATION TIME: 19:04 [ET]| |RX TYPE: [1] B&W-L-LP,[2] B&W-L-LP |EVENT DATE: 08/28/98 | +------------------------------------------------+EVENT TIME: 18:52[EDT]| |NRC NOTIFIED BY: CHARLES HARTMAN |LAST UPDATE DATE: 08/28/98 | |HQ OPS OFFICER: BOB STRANSKY +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |WILLIAM COOK 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 +------------------------------------------------------------------------------+ | CONTROL BUILDING VENTILATION DAMPER FOUND PARTIALLY OPEN | | | | ON 8/23/98, NORMALLY-CLOSED DAMPER AHD-270 IN THE CONTROL BUILDING | | VENTILATION SYSTEM WAS DISCOVERED TO BE PARTIALLY OPEN. THIS DAMPER IS | | ASSOCIATED WITH A CONNECTION POINT TO WHICH TEMPORARY DUCTING WOULD BE | | INSTALLED IN THE EVENT OF A VENTILATION SYSTEM FAILURE. THE DAMPER WAS | | CLOSED BY THE LICENSEE ON 8/23/98. | | | | THE LICENSEE HAS DETERMINED THAT THE AS-FOUND CONDITION OF THIS DAMPER | | COULD HAVE AFFECTED CONTROL BUILDING HABITABILITY DURING A POSTULATED | | EVENT. THIS PLACES THE UNIT OUTSIDE OF ITS DESIGN BASIS. THE NRC RESIDENT | | INSPECTOR WILL BE INFORMED. | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 34711 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: SAN ONOFRE REGION: 4 |NOTIFICATION DATE: 08/29/98 | |UNIT: [ ] [2] [3] STATE: CA |NOTIFICATION TIME: 01:20 [ET]| |RX TYPE: [1] W-3-LP,[2] CE,[3] CE |EVENT DATE: 08/28/98 | +------------------------------------------------+EVENT TIME: 19:10[PDT]| |NRC NOTIFIED BY: GREG BECKER |LAST UPDATE DATE: 08/29/98 | |HQ OPS OFFICER: FANGIE JONES +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |DALE POWERS 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 100 POWER OPERATION | 100 POWER OPERATION | | 3 | N Y 100 POWER OPERATION | 100 POWER OPERATION | +-----+---------------------------------------------+--------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | ACTUATION OF CONTROL ROOM EMERGENCY AIR CLEANUP SYSTEM | | | | OPERATORS MANUALLY ACTUATED THE TOXIC GAS ISOLATION SIGNAL (TGIS) WHICH | | ACTUATED THE CONTROL ROOM EMERGENCY AIR CLEANUP SYSTEM (CREACUS) DUE TO A | | LEAK IN THE BULK SULFURIC ACID TANK. THE ACID LEAK WAS FULLY CONTAINED BY | | CHEMICAL BERMS AND NO CHEMICALS WERE RELEASED TO THE ENVIRONMENT. THE | | ACTUATION WAS A PRECAUTIONARY ACTION ONLY. A PLANT ABNORMAL PROCEDURE FOR | | LOCAL AREA EVACUATION HAS BEEN ENTERED TO KEEP PERSONNEL CLEAR OF THE AREA | | FOR PERSONNEL PROTECTION. ACTIONS WILL BE TAKEN TO REPAIR THE LEAK AND | | PUMP OUT THE BERM CONTAINING THE SULFURIC ACED. | | | | THE LICENSEE INFORMED THE NRC RESIDENT INSPECTOR. | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |FUEL CYCLE FACILITY | |EVENT NUMBER: 34712 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: PORTSMOUTH GASEOUS DIFFUSION PLANT |NOTIFICATION DATE: 08/29/98 | | RXTYPE: URANIUM ENRICHMENT FACILITY |NOTIFICATION TIME: 07:59 [ET]| |COMMENTS: 2 DEMOCRACY CENTER |EVENT DATE: 08/28/98 | | 6903 ROCKLEDGE DRIVE |EVENT TIME: 08:30[EDT]| | BETHESDA, MD 20817 (301)564-3200 |LAST UPDATE DATE: 08/29/98 | | CITY: PIKETON REGION: 3 +-----------------------------+ | COUNTY: PIKE STATE: OH |PERSON ORGANIZATION| |LICENSE#: GDP-2 AGREEMENT: N |PATRICK HILAND RDO | | DOCKET: 0707002 |SUSAN SHANKMAN EO | +------------------------------------------------+FRANK CONGEL IRD | |NRC NOTIFIED BY: KEITH VANDERPOOL | | |HQ OPS OFFICER: FANGIE JONES | | +------------------------------------------------+ | |EMERGENCY CLASS: NOT APPLICABLE | | |10 CFR SECTION: | | |NBNL RESPONSE-BULLETIN | | | | | | | | | | | | | | +------------------------------------------------+-----------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | 24-HOUR NRC BULLETIN 91-01 REPORT | | | | FACILITY OPERATIONS PERSONNEL DISCOVERED THAT A NUCLEAR CRITICALITY SAFETY | | APPROVAL (NCSA) REQUIREMENT WAS NOT BEING MAINTAINED IN THE X-326 PROCESS | | BUILDING. SEVERAL CONTAINERS FOUND IN A STORAGE AREA FOR SMALL DIAMETER | | CONTAINERS, WERE NOT BAGGED CORRECTLY, THIS CONSTITUTED A LOSS OF ONE | | CONTROL (GEOMETRY) IN THE DOUBLE CONTINGENCY MATRIX. MODERATION, THE OTHER | | CONTINGENCY, WAS MAINTAINED THROUGHOUT THIS EVENT. THE LOST CONTROL WAS | | ESTABLISHED UNDER THE DIRECTION OF THE ON SCENE NCSA STAFF MANAGER. | | | | THE NRC RESIDENT INSPECTOR AND ONSITE DOE REPRESENTATIVE WERE INFORMED BY | | THE FACILITY. | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 34713 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: INDIAN POINT REGION: 1 |NOTIFICATION DATE: 08/29/98 | |UNIT: [2] [ ] [ ] STATE: NY |NOTIFICATION TIME: 17:12 [ET]| |RX TYPE: [2] W-4-LP,[3] W-4-LP |EVENT DATE: 08/29/98 | +------------------------------------------------+EVENT TIME: 00:00[EDT]| |NRC NOTIFIED BY: JOHN BALLETTA |LAST UPDATE DATE: 08/29/98 | |HQ OPS OFFICER: BOB STRANSKY +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |WILLIAM COOK RDO | |CCCC 21.21 UNSPECIFIED PARAGRAPH | | | |V. HODGE (via fax) NRR | | | | | | | | | | +-----+----------+-------+--------+--------------+--+--------+-----------------+ |UNIT |SCRAM CODE|RX CRIT|INIT PWR| INIT RX MODE |CURR PWR| CURR RX MODE | +-----+----------+-------+--------+-----------------+--------+-----------------+ | 2 | N N 0 HOT SHUTDOWN | 0 HOT SHUTDOWN | | | | | | | | | +-----+---------------------------------------------+--------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | 10 CFR PART 21 REPORT REGARDING BINDING OF WESTINGHOUSE DB-50 CIRCUIT | | BREAKERS | | | | "AFTER COMPLETION OF SURVEILLANCE TEST PMT-170 AUXILIARY FEEDWATER PUMP | | (AFWP) ACTUATION FUNCTIONAL TEST, OPERATIONS MADE AN ATTEMPT TO START 21 | | AFWP FROM CCR CONTROL SWITCH. THE BREAKER DID NOT CLOSE. | | | | "DURING STEP BY STEP INVESTIGATION AND INSPECTION, IT WAS DETERMINED THAT: | | (1) THE INERTIA LATCH FAILED TO RESET TO ITS NORMAL POSITION TO ENABLE | | THE OPERATING MECHANISM CLOSING THE BREAKER. (THE VISUAL INSPECTION | | FOUND THE INERTIA LATCH TO BE IN A POSITION TO PRECLUDE THE | | OPERATING MECHANISM FROM CLOSING THE BREAKER.) | | (2) THE INERTIA LATCH INITIALLY WAS BINDING SEVERELY. AFTER | | MANIPULATION OF THE LATCH THE FRICTION DECREASED TO A POINT WHERE | | THE MOVEMENT WAS NORMAL. WHEN THE LATCH WAS MOVED AXIALLY TOWARD | | THE SNAP RING IT WOULD BIND AT THAT POINT. | | (3) THE CAUSE OF THE FAILURE WAS SPALLING OR BREAKING-AWAY OF SURFACE | | COATING ON THE PIVOT PIN AND POSSIBLY THE BUSHING (PIVOT PIN HOLE) | | OF THE INERTIA LATCH. THE FRAGMENTS OF THE COATING ACCUMULATED ON | | THE SURFACES OF THE PIN AND THE BUSHING IN DISCREET LOCATIONS, | | REDUCED THE CLEARANCE BETWEEN THE PIVOT PIN AND THE BUSHING. THE | | REDUCTION IN CLEARANCE RESULTED IN BINDING OF THE INERTIA LATCH. | | THE INERTIA LATCH BINDING PREVENTED THE LATCH TO RESET IN ITS | | NORMAL POSITION AND PREVENTED THE BREAKER FROM CLOSING. THE | | DIMENSIONS OF THE 21 AUXILIARY FEED PUMP BREAKER INERTIA LATCH PIN | | AND PIVOT PIN HOLE [BUSHING] WERE FOUND TO BE NOMINAL 0.375" AND | | 0.376" RESPECTIVELY.) | | | | "THE EXAMINATION OF THE COATING ON THE SHAFT PIN CLEARLY SHOWED THAT THE | | COATING WAS BREAKING AWAY FROM THE SURFACE. THE DAMAGE MAY HAVE BEEN | | INITIATED DURING TREATMENT WITH THE EMERY CLOTH AS PART OF THE CUSTOM | | FITTING PROCESS. HOWEVER IT APPEARS, THAT DURING SERVICE, MATERIAL WAS | | DISLODGED FROM THE SURFACES. THE VISUAL EXAMINATION INDICATES THAT THE | | QUALITY OF BONDING OF THE COATING ON THE SHAFT WAS INADEQUATE." | | | | THE NRC RESIDENT INSPECTOR WILL BE INFORMED BY THE LICENSEE. | | | | | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 34714 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: BRUNSWICK REGION: 2 |NOTIFICATION DATE: 08/29/98 | |UNIT: [ ] [2] [ ] STATE: NC |NOTIFICATION TIME: 23:22 [ET]| |RX TYPE: [1] GE-4,[2] GE-4 |EVENT DATE: 08/29/98 | +------------------------------------------------+EVENT TIME: 21:26[EDT]| |NRC NOTIFIED BY: HAL WALL |LAST UPDATE DATE: 08/29/98 | |HQ OPS OFFICER: BOB STRANSKY +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |LEN WERT 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 1 STARTUP | 1 STARTUP | | | | | +-----+---------------------------------------------+--------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | MAIN STEAM ISOLATION VALVE CLOSURE DURING UNIT STARTUP | | | | "DURING UNIT 2 STARTUP, A MAIN STEAM ISOLATION VALVE (MSIV) ISOLATION | | OCCURRED WHEN BYPASS VALVES OPENED WHILE DRAWING A VACUUM IN THE MAIN | | CONDENSER. AT 7" VACUUM, BYPASS VALVES OPENED BECAUSE THE BYPASS JACK WAS | | NOT IN THE FULLY CLOSED POSITION. (BYPASS VALVES RECEIVE AN AUTOMATIC CLOSE | | SIGNAL WHEN MAIN CONDENSER VACUUM IS <7".) WHEN THE BYPASS VALVES OPENED, | | THE MSIVs CLOSED BECAUSE GROUP 1 ISOLATION LOGIC CHANNELS A1 AND B1 SENSED | | HIGH MAIN STEAM LINE FLOW. | | | | REVIEW OF POST-TRIP DATA INDICATES THE GROUP 1 ISOLATION LOGIC FUNCTIONED | | AS DESIGNED. SAFETY SIGNIFICANCE WAS MINIMAL. ALL REACTOR PARAMETERS | | REMAINED WITHIN THEIR NORMAL CONTROL BANDS." | | | | THE LICENSEE CLOSED THE BYPASS JACK AND THEN REOPENED THE MSIVs. THE NRC | | RESIDENT INSPECTOR HAS BEEN INFORMED. | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 34715 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: INDIAN POINT REGION: 1 |NOTIFICATION DATE: 08/30/98 | |UNIT: [ ] [3] [ ] STATE: NY |NOTIFICATION TIME: 16:00 [ET]| |RX TYPE: [2] W-4-LP,[3] W-4-LP |EVENT DATE: 08/30/98 | +------------------------------------------------+EVENT TIME: 14:00[EDT]| |NRC NOTIFIED BY: T. McKEE |LAST UPDATE DATE: 08/30/98 | |HQ OPS OFFICER: BOB STRANSKY +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |WILLIAM COOK RDO | |ARPS 50.72(b)(2)(ii) RPS ACTUATION | | | | | | | | | | | | | | +-----+----------+-------+--------+--------------+--+--------+-----------------+ |UNIT |SCRAM CODE|RX CRIT|INIT PWR| INIT RX MODE |CURR PWR| CURR RX MODE | +-----+----------+-------+--------+-----------------+--------+-----------------+ | | | | | 3 | A/R Y 100 POWER OPERATION | 0 HOT STANDBY | | | | | +-----+---------------------------------------------+--------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | AUTOMATIC REACTOR TRIP DURING SURVEILLANCE TESTING | | | | WHILE PERFORMING A PRESSURIZER LEVEL FUNCTIONAL TEST, THE REACTOR TRIPPED | | DUE TO A LOW PRESSURIZER LEVEL SIGNAL. FOLLOWING THE TRIP, ALL CONTROL RODS | | INSERTED COMPLETELY, AND ALL SYSTEMS FUNCTIONED AS EXPECTED, EXCEPT THAT | | STEAM DUMP VALVE MS-PCV-1121 STUCK OPEN. OPERATORS CLOSED THE MAIN STEAM | | ISOLATION VALVES TO LIMIT THE COOLDOWN RATE. THE UNIT IS CURRENTLY STABLE | | IN MODE 3. | | | | THE LICENSEE BELIEVES THAT A RELAY PROBLEM MAY HAVE EXISTED IN ONE OF THE | | PRESSURIZER LEVEL CHANNELS AND THAT PLACING THE CHANNEL TO BE TESTED IN | | "BYPASS" COMPLETED THE 2 OUT OF 3 LOGIC; HOWEVER, THIS EVENT IS STILL UNDER | | INVESTIGATION. THE NRC RESIDENT INSPECTOR WILL BE INFORMED BY THE LICENSEE. | | | +------------------------------------------------------------------------------+