U.S. Nuclear Regulatory Commission Operations Center Event Reports For 09/18/95 - 09/19/95 ** EVENT NUMBERS ** 29215 29345 +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 29215 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: QUAD CITIES REGION: 3 |NOTIFICATION DATE: 08/18/95 | |UNIT: [1] [ ] [ ] STATE: IL |NOTIFICATION TIME: 16:42 [ET]| |RX TYPE: [1] GE-3,[2] GE-3 |EVENT DATE: 08/18/95 | +------------------------------------------------+EVENT TIME: 03:45[CDT]| |NRC NOTIFIED BY: TOM HOUZENGA |LAST UPDATE DATE: 09/18/95 | |HQ OPS OFFICER: DICK JOLLIFFE +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |GEOFFREY WRIGHT 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 | | | | | | | | | +-----+---------------------------------------------+--------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | - LICENSED STEADY STATE FULL POWER EXCEEDED FOR LESS THAN 1 MINUTE - | | | | AT 0345 (CDT), THE #1A RECIRC PUMP EXPERIENCED AN UNCONTROLLED SPEED | | INCREASE OF APPROXIMATELY 4% WHICH RESULTED IN A POSITIVE REACTIVITY | | INSERTION WHICH CAUSED THE NEUTRON INSTRUMENTATION TO INDICATE AN AVERAGE | | POWER OF 102.18% POWER. LICENSEE IS DETERMINING WHAT THE ACTUAL THERMAL | | POWER WAS FOR THIS SHORT DURATION POWER SPIKE OF LESS THAN 1 MINUTE. | | LICENSEE LOCKED UP THE SCOOP TUBE ON THE RECIRC PUMP SPEED CONTROLLER. | | | | MAXIMUM LICENSED STEADY STATE FULL POWER IS 2511 MEGAWATTS THERMAL. | | | | LICENSEE IS INVESTIGATING THE CAUSE AND DETERMINING CORRECTING ACTIONS | | TO PRECLUDE RECURRENCE OF THIS TYPE OF EVENT. | | | | LICENSEE INFORMED THE NRC RESIDENT INSPECTOR. | | | | | | * * * UPDATE AT 2105 ON 9/18/95 BY VENCI TAKEN BY WEAVER * * * | | "RECENT TESTING ON THE UNIT 1 FEEDWATER FLOW INSTRUMENTATION HAS DETERMINED | | THAT THE INSTRUMENTATION IS READING HIGHER THAN THE ACTUAL FEEDWATER FLOW | | CONDITIONS, RESULTING IN A CONSERVATIVE CORE THERMAL POWER LEVEL OF | | APPROXIMATELY 1.4%. AS A RESULT, IT HAS NOW BEEN CONCLUDED THAT THE POWER | | LEVEL DURING THE EVENT DID NOT EXCEED 102% AS INDICATED IN THE PREVIOUS | | NOTIFICATION, AND THEREFORE; NO REPORT WILL BE SUBMITTED. AN INVESTIGATION | | IS BEING PERFORMED IN AN EFFORT TO PRECLUDE FURTHER RUNUP EVENTS." | | HOO NOTIFIED THE R3DO (LANKSBURY). | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 29345 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: INDIAN POINT REGION: 1 |NOTIFICATION DATE: 09/18/95 | |UNIT: [2] [ ] [ ] STATE: NY |NOTIFICATION TIME: 17:51 [ET]| |RX TYPE: [2] W-4-LP,[3] W-4-LP |EVENT DATE: 09/18/95 | +------------------------------------------------+EVENT TIME: 17:17[EDT]| |NRC NOTIFIED BY: JOHN LITOI |LAST UPDATE DATE: 09/18/95 | |HQ OPS OFFICER: DOUG WEAVER +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |LAWRENCE DOERFLEIN 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 | | | | | | | | | +-----+---------------------------------------------+--------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | -A RADIATION MONITOR SPIKED CAUSING A STEAM GENERATOR BLOWDOWN ISOLATION- | | | | WHILE RESTORING FROM MAINTENANCE ON THE STEAM GENERATOR (S/G) BLOWDOWN | | SYSTEM, A STEAM GENERATOR BLOWDOWN ISOLATION WAS RECEIVED. RADIATION | | MONITOR R49 SPIKED AND CAUSED THE ISOLATION. THE ISOLATION OCCURRED | | NORMALLY WITH ALL EXPECTED VALVES CLOSING. THE SYSTEM HAS BEEN RESTORED. | | | | THE LICENSEE BELIEVES THE SPIKE ON THE RAD MONITOR WAS CAUSED BY THE | | RESTORATION OF FLOW IN THE BLOWDOWN SYSTEM AND WAS NOT THE RESULT OF A | | VALID HIGH RADIATION CONDITION. INVESTIGATION CONTINUES. | | | | SEE EVENT 29338 FOR A RELATED EVENT. THE LICENSEE INFORMED THE NRC | | RESIDENT INSPECTOR. | +------------------------------------------------------------------------------+