U.S. Nuclear Regulatory Commission Operations Center Event Reports For 09/24/97 - 09/25/97 ** EVENT NUMBERS ** 32983 32985 32986 32987 +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 32983 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: COOK REGION: 3 |NOTIFICATION DATE: 09/23/97 | |UNIT: [1] [ ] [ ] STATE: MI |NOTIFICATION TIME: 17:39 [ET]| |RX TYPE: [1] W-4-LP,[2] W-4-LP |EVENT DATE: 09/23/97 | +------------------------------------------------+EVENT TIME: 15:10[EDT]| |NRC NOTIFIED BY: RANDY PTACEK |LAST UPDATE DATE: 09/24/97 | |HQ OPS OFFICER: STEVE SANDIN +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |PATRICK HILAND RDO | |AESF 50.72(b)(2)(ii) ESF ACTUATION | | | | | | | | | | | | | | +-----+----------+-------+--------+--------------+--+--------+-----------------+ |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 +------------------------------------------------------------------------------+ | ESF SIGNAL DURING STEAM GENERATOR FILL EVOLUTION. | | | | "UNIT 1 IS MAKING A 4 HOUR NOTIFICATION OF AN ESF ACTUATION PER PARAGRAPH | | 10CFR50.72(b)(2)(ii). THE ESF ACTUATION THAT OCCURRED WAS THE OPENING OF | | THE TDAFP STEAM GENERATOR AFW CONTROL VALVES IN RESPONSE TO ESF SIGNAL, SG | | LO-LO LEVEL IN 2 OUT OF 4 SGs. THIS EVENT OCCURRED WHILE FILLING THE UNIT | | 1 STEAM GENERATORS TO PLACE THEM IN WET LAYUP CONDITIONS WHILE THE UNIT IS | | IN MODE 5. IN THIS SITUATION TWO OF THE GENERATORS HAD BEEN FILLED ABOVE | | THE ACTUATION SETPOINT AND THE OTHER TWO GENERATORS REMAINED BELOW THE | | SETPOINT. AS THE THIRD GENERATOR INDICATED WATER LEVEL EXCEEDED THE | | ACTUATION SETPOINT, THE ESF SIGNAL THAT STARTS THE PUMP AND OPENS THE FLOW | | CONTROL VALVES RESET. THE INDICATED LEVEL THEN FELL BELOW THE ACTUATION | | SETPOINT CAUSING THE AFW CONTROL VALVES TO OPEN. THE TDAFP TRIP AND | | THROTTLE VALVE HAD BEEN MANUALLY DEFEATED SO IT DID NOT OPEN. THE UNIT WAS | | IN MODE 5 AT THE TIME AT APPROXIMATELY 140øF AND 290 PSIG ON RHR COOLING, | | SO THE ACTUATION WAS UNNEEDED AND THE SITUATION POSED NO THREAT TO THE | | HEALTH AND SAFETY OF THE PLANT OR PUBLIC. THE CREW CONTINUED TO FILL THE | | SGs WITH THE MDAFPs, AND CLOSED THE TDAFP VALVES." | | THE LICENSEE WILL INFORM THE NRC RESIDENT INSPECTOR. | | | | * * * UPDATE 1659EDT 9/24/97 FROM PTACEK TO S.SANDIN * * * | | THE LICENSEE IS UPDATING THIS REPORT TO ADD THE FOLLOWING: | | | | "AS THE THIRD GENERATOR WATER LEVEL INCREASED THROUGH THE LOW-LOW LEVEL | | SETPOINT RANGE, INSTRUMENT CHANNEL OSCILLATIONS IN COMBINATION WITH A | | NARROW RESET BAND CAUSED THE ACTUATION SIGNAL TO CLEAR AND THEN ACTUATE." | | | | THE LICENSEE WILL INFORM THE RESIDENT INSPECTOR. NOTIFIED R3DO(PHILLIPS). | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |GENERAL INFORMATION or OTHER | |EVENT NUMBER: 32985 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |LICENSEE: BW/IP INTERNATIONAL, INC. |NOTIFICATION DATE: 09/24/97 | | CITY: LOS ANGELES REGION: 4 |NOTIFICATION TIME: 12:00 [ET]| | COUNTY: LOS ANGELES STATE: CA |EVENT DATE: 09/24/97 | |LICENSE#: AGREEMENT: Y |EVENT TIME: 08:55[PDT]| | DOCKET: |LAST UPDATE DATE: 09/24/97 | | +-----------------------------+ | |PERSON ORGANIZATION| | |ELMO COLLINS RDO | | | | +------------------------------------------------+VERN HODGE (NRR) | |NRC NOTIFIED BY: W. LANE (VIA FAX) |TOM MOSLAK (R1DO) | |HQ OPS OFFICER: STEVE SANDIN | | +------------------------------------------------+ | |EMERGENCY CLASS: NOT APPLICABLE | | |10 CFR SECTION: | | |CCCC 21.21 UNSPECIFIED PARAGRAPH | | | | | | | | | | | | | | +------------------------------------------------+-----------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | PART 21 NOTIFICATION | | | | THE EMERGENCY SERVICE WATER PUMP, BW/IP MODEL 16-GH 4-STAGE VTP FAILED | | DURING A SITE OPERABILITY TEST AT THE OYSTER CREEK GENERATING STATION. AN | | INSPECTION REVEALED THAT THE THREADED FLANGE ATTACHING THE COLUMN TO THE | | TOP SERIES CASE HAD FAILED. THE UTILITY (GPU) ATTRIBUTED THE FAILURE TO | | DISSIMILAR METALS; A CAST IRON FLANGE WAS INSTALLED BETWEEN THE STAINLESS | | STEEL COLUMN PIPE AND A STAINLESS STEEL TOP CASE. BW/IP REVIEWED THE | | UTILITIES EVALUATION AND RECOMMENDED THAT ALL SUCH PUMPS IN HIGH ION | | SERVICES BE UPGRADED TO 316 STAINLESS STEEL MATERIAL. | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 32986 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: MILLSTONE REGION: 1 |NOTIFICATION DATE: 09/24/97 | |UNIT: [ ] [ ] [3] STATE: CT |NOTIFICATION TIME: 16:36 [ET]| |RX TYPE: [1] GE-3,[2] CE,[3] W-4-LP |EVENT DATE: 09/24/97 | +------------------------------------------------+EVENT TIME: 16:26[EDT]| |NRC NOTIFIED BY: W. HOFFNER |LAST UPDATE DATE: 09/24/97 | |HQ OPS OFFICER: STEVE SANDIN +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |TOM MOSLAK RDO | |APRE 50.72(b)(2)(vi) OFFSITE NOTIFICATION | | | | | | | | | | | | | | +-----+----------+-------+--------+--------------+--+--------+-----------------+ |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 +------------------------------------------------------------------------------+ | CONNECTICUT DEPARTMENT OF ENVIRONMENTAL PROTECTION NOTIFIED OF 30 GALLON | | HYDRAULIC OIL SPILL. | | | | "A HYDRAULIC OIL SPILL OF APPROXIMATELY 30 GALLONS FROM A TRASH COMPACTOR | | OCCURRED TO THE PAVEMENT OUTSIDE THE PROTECTED AREA. THE OIL SPILL WAS | | CONTAINED TO THE PAVEMENT AND DID NOT REACH ANY WATERWAYS." | | | | THE LICENSEE INFORMED THE STATE AND WILL INFORM THE NRC RESIDENT INSPECTOR. | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 32987 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: MILLSTONE REGION: 1 |NOTIFICATION DATE: 09/24/97 | |UNIT: [ ] [2] [ ] STATE: CT |NOTIFICATION TIME: 18:56 [ET]| |RX TYPE: [1] GE-3,[2] CE,[3] W-4-LP |EVENT DATE: 09/24/97 | +------------------------------------------------+EVENT TIME: 18:24[EDT]| |NRC NOTIFIED BY: STEPHEN BAKER |LAST UPDATE DATE: 09/24/97 | |HQ OPS OFFICER: STEVE SANDIN +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |TOM MOSLAK 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 | +-----+----------+-------+--------+-----------------+--------+-----------------+ | | | | | 2 | N N 0 REFUELING | 0 REFUELING | | | | | +-----+---------------------------------------------+--------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | LICENSEE IDENTIFIED THAT THE ENGINEERED SAFEGUARDS ACTION SYSTEM POWER | | SUPPLY FUSES WERE UNDERRATED. | | | | "AN ENGINEERING REVIEW HAS CONCLUDED THAT THE ENGINEERED SAFEGUARDS | | ACTUATION SYSTEM FOR SIAS AND UNDERVOLTAGE MAY NOT FUNCTION DURING ACCIDENT | | CONDITIONS DUE TO A POWER SUPPLY FUSE FAILURE. | | | | THE EXPECTED LOAD ON THE POWER SUPPLY IS GREATER THAN THE FUSE RATING. THIS | | FAILURE WOULD PREVENT THE ESAS FROM ACTUATING SAFEGUARDS EQUIPMENT DURING | | DESIGN BASES ACCIDENTS. | | | | "THE ESAS IS NOT REQUIRED IN THE CURRENT MODE OF OPERATION." | | | | THE ENGINEERING REVIEW WAS INITIATED IN AUGUST AFTER THE FUSE BLEW. THE | | LICENSEE DISCOVERED THAT WHEN THE POWER SUPPLY TO BOTH ESAS CABINETS WAS | | CHANGED IN 1994, THE AMPERAGE RATING ON THE REPLACEMENT POWER SUPPLY WAS | | MUCH HIGHER THAN WHAT WAS ORIGINALLY INSTALLED. THE INSTALLED FUSES WERE | | RATED FOR 6 AMPS (A) COLD AND 5.3A HOT (THE STEADY STATE CURRENT IS | | APPROXIMATELY 5.2A). DURING AN ESAS ACTUATION THE LOAD CURRENT APPROACHES | | 9A WHICH CAUSED THE FUSE TO BLOW. THE LICENSEE WILL IDENTIFY AND IMPLEMENT | | APPROPRIATE CORRECTIVE ACTIONS PRIOR TO CHANGING THEIR MODE OF OPERATION. | | | | THE LICENSEE INFORMED STATE AND LOCAL AGENCIES AND THE NRC RESIDENT | | INSPECTOR. | +------------------------------------------------------------------------------+