U.S. Nuclear Regulatory Commission Operations Center Event Reports For 08/16/94 - 08/17/94 ** EVENT NUMBERS ** 27676 27677 27678 27679 27680 27681 27682 27683 +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 27676 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: DIABLO CANYON REGION: 4 |NOTIFICATION DATE: 08/15/94 | |UNIT: [1] [2] [ ] STATE: CA |NOTIFICATION TIME: 21:28 [ET]| |RX TYPE: [1] W-4-LP,[2] W-4-LP |EVENT DATE: 08/15/94 | +------------------------------------------------+EVENT TIME: 18:15[PDT]| |NRC NOTIFIED BY: ANDERSON |LAST UPDATE DATE: 08/16/94 | |HQ OPS OFFICER: GREG SCARFO +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |CHARLES CAIN RDO | |AESS 50.72(b)(1)(v) EMERGENCY SIREN INOP | | |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 Y 100 POWER OPERATION | 100 POWER OPERATION | | 2 | N Y 100 POWER OPERATION | 100 POWER OPERATION | | | | | +-----+---------------------------------------------+--------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | LOSS OF 90% OF EMERGENCY SIRENS DUE TO A LOSS OF ELECTRICAL POWER TO THE | | COUNTY. | | | | 90% OF THE EMERGENCY SIRENS WERE DECLARED INOPERABLE WHEN THE LOSS OF TWO | | "MORRO BAY" 230KV LINES RESULTED IN A LOSS OF POWER TO THE COUNTY. LOCAL | | FIRES IN THE AREA OF THE PLANT (15-20 MILES) CAUSED THE LOSS OF THE TWO | | "MORRO BAY" LINES. IT IS EXPECTED THAT THE "MORRO BAY" LINES WILL BE | | RETURNED TO SERVICE WITHIN TWO OR THREE HOURS. THE LICENSEE INFORMED THE | | NRC RESIDENT INSPECTOR. | | | | HOO NOTE: ALSO, ONE OF THE "MORRO BAY" LINES IS ONE OF TWO OFFSITE POWER | | SOURCES FOR THE PLANT. THE OTHER, THE "MIDWAY LINE" (A 500KV | | LINE), IS STILL AVAILABLE AND IS NOT THREATENED BY THE FIRES. | | NO OTHER PLANT OPERATIONS HAVE BEEN AFFECTED BY THE FIRES. | | | | **** UPDATE AT 0327 EDT ON 08/16/94 BY DYE TAKEN BY ANDREWS **** | | THE LICENSEE CALLED TO REPORT THAT POWER HAD BEEN RESTORED TO THE SAN LUIS | | OBISPO AREA AND APPEARED TO BE STABLE AND RELIABLE. THIS MEANS THAT POWER | | HAS BEEN RESTORED TO THE SIRENS SO THEY ARE NOW CONSIDERED TO BE OPERABLE. | | | | HOWEVER, THE LICENSEE NOTED THAT THE ACTIVATION TRANSMITTER HAS NOT HAD | | POWER RESTORED AND IS OPERATING ON A BACKUP GENERATOR / BACKUP BATTERIES AT | | THIS TIME. THEY ARE WORKING TO RESTORE POWER TO THIS DEVICE. | | | | THE NRC RESIDENT INSPECTOR WILL BE NOTIFIED. | | | | HOO NOTIFIED R4DO (CAIN). | | | | * * * UPDATE 08/16/94 1356EDT FROM:ANDERSON BY:SCARFO * * * | | THE LICENSEE REPORTS THAT ALL SIX OF THE EMERGENCY DIESEL GENERATORS (EDGs) | | STARTED AFTER THE LOSS OF THE "MORRO BAY" LINE. THE START SIGNAL WAS | | ISSUED ON THE LOSS OF THE OFFSITE POWER LINE NOT ON AN UNDERVOLTAGE | | CONDITION ON ANY OF THE SAFEGUARDS BUSSES. THE EDGs RAN FOR APPROXIMATELY | | ONE HOUR (DID NOT LOAD) BEFORE BEING SECURED. THE "MORRO BAY" LINES WERE | | RETURNED TO SERVICE AT APPROXIMATELY 2245PDT. THE LICENSEE INFORMED THE | | NRC RESIDENT INSPECTOR. R4DO(CAIN) NOTIFIED. | | | | * * * COMMISSIONERS' ASSISTANTS BRIEFING 08/16/94 1615EDT * * * | | BRIEFER: COLLINS (RIV) | | PARTICIPANTS: CONGEL(AEOD) BEECHER(PAO) BANGART(SP) | | MITCHELL(EDO) CALLAHAN(CA) SORENSON(ROGERS) | | JONES(SELIN) PETERSON(PM) TILLSON(RI) | | KIRSCH(R4) QUAY(NRR) ADENSAM(NRR) | | BARRSS(NRR) CALLEN(R4A) MCKENNA(DEPLANQUE) | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 27677 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: COOK REGION: 3 |NOTIFICATION DATE: 08/16/94 | |UNIT: [ ] [2] [ ] STATE: MI |NOTIFICATION TIME: 00:38 [ET]| |RX TYPE: [1] W-4-LP,[2] W-4-LP |EVENT DATE: 08/15/94 | +------------------------------------------------+EVENT TIME: 23:50[EDT]| |NRC NOTIFIED BY: NED WOLLENSLEGEL |LAST UPDATE DATE: 08/16/94 | |HQ OPS OFFICER: THOMAS ANDREWS +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: UNUSUAL EVENT +-----------------------------+ |10 CFR SECTION: |THOMAS BURDICK RDO | |AAEC 50.72(a)(1)(i) EMERGENCY DECLARED |GUS LAINAS EO | |ARPS 50.72(b)(2)(ii) RPS ACTUATION |DAN SULLIVAN FEMA | | | | | | | | | | +-----+----------+-------+--------+--------------+--+--------+-----------------+ |UNIT |SCRAM CODE|RX CRIT|INIT PWR| INIT RX MODE |CURR PWR| CURR RX MODE | +-----+----------+-------+--------+-----------------+--------+-----------------+ | | | | | 2 | A/R Y 61 POWER OPERATION | 0 HOT STANDBY | | | | | +-----+---------------------------------------------+--------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | UNUSUAL EVENT DECLARED --- LOSS OF ALL NORMAL FEEDWATER | | | | THE LICENSEE WAS OPERATING AT 61% RATED THERMAL POWER IN A NORMAL | | END-OF-CYCLE COASTDOWN WHILE OPERATORS WERE TROUBLESHOOTING A "D" BUS LOW | | VOLTAGE ALARM. THE OPERATORS SECURED THE "#21" CIRCULATING WATER PUMP, | | LEAVING THE REMAINING THREE CIRCULATING PUMPS OPERATING. AT THIS POWER | | LEVEL, THERE SHOULD HAVE BEEN ADEQUATE CIRCULATING WATER FLOW THROUGH THE | | MAIN FEED PUMP CONDENSER FROM THESE 3 REMAINING CIRCULATING WATER PUMPS. | | | | WHEN THE CIRCULATING WATER PUMP WAS TAKEN OUT OF SERVICE, MAIN FEED PUMP | | CONDENSER VACUUM DECREASED TO THE POINT WHERE BOTH MAIN FEED PUMPS TRIPPED | | ON LOSS OF VACUUM. MAIN CONDENSER VACUUM WAS NOT LOST. AT 2350 EDT ON | | 08/15/94, WHEN THE LEVEL IN THE "#3" STEAM GENERATOR DECREASED TO THE LOW | | LEVEL CONDITION (APPROXIMATELY 26%), THE REACTOR TRIPPED ON LOW LEVEL | | COINCIDENT WITH LOW FLOW IN THE "#3" STEAM GENERATOR. | | | | SYSTEM RESPONSE FOLLOWING THE TRIP WAS NORMAL. ALL RODS FULLY INSERTED | | AFTER THE TRIP. THERE WERE NO PRIMARY OR SECONDARY PORV OR SAFETY VALVE | | ACTUATIONS. THE MAIN TURBINE TRIPPED. ALL THE REACTOR COOLANT PUMPS | | REMAINED RUNNING THROUGHOUT THE EVENT. NORMAL OFFSITE POWER IS AVAILABLE | | AND THE DIESELS ARE IN STANDBY. NO SAFETY EQUIPMENT IS OUT OF SERVICE. | | AUXILIARY FEEDWATER ACTUATED AS DESIGNED (BOTH THE MOTOR DRIVEN PUMPS AND | | THE TURBINE DRIVEN PUMP STARTED) AND A FEEDWATER ISOLATION OCCURRED AS | | EXPECTED. STEAM GENERATOR WATER LEVEL IS BEING MAINTAINED USING THE | | AUXILIARY FEEDWATER SYSTEM. STEAM IS BEING DUMPED TO THE CONDENSER WITH | | THE CONDENSER SERVING AS THE HEAT SINK. | | | | THE LICENSEE NOTED THAT THE SOURCE RANGE DETECTORS ARE CONSIDERED TO BE | | FUNCTIONAL BUT NOT OPERABLE. THIS IS A RESULT OF THEM BEING ENERGIZED FOR | | APPROXIMATELY 30 MINUTES WHILE THE REACTOR WAS AT 100% RATED THERMAL POWER | | EARLIER IN THE CYCLE. THE LICENSEE STATED THAT THE READINGS FROM THE | | SOURCE RANGE DETECTORS APPEARED TO BE NORMAL AND WERE TRENDING AS EXPECTED. | | | | WHILE REVIEWING THE EVENT, THE LICENSEE DECLARED AN UNUSUAL EVENT BASED ON | | LOSS OF ALL NORMAL FEEDWATER AT 0035 EDT ON 08/16/94. BECAUSE AUXILIARY | | FEEDWATER HAD ACTUATED AND WAS MAINTAINING STEAM GENERATOR LEVEL, THE | | UNUSUAL EVENT WAS TERMINATED AT 0035 EDT ON 08/16/94. | | | | THE LICENSEE IS INVESTIGATING THE CAUSE OF THE LOSS OF MAIN FEED PUMP | | CONDENSER VACUUM BUT SPECULATES THAT BIOLOGICAL FOULING (ZEBRA MUSCLES) MAY | | HAVE CONTRIBUTED TO THIS EVENT. THE NRC RESIDENT INSPECTOR WILL BE | | NOTIFIED. STATE AND LOCAL OFFICIALS HAVE BEEN NOTIFIED. A PRESS RELEASE IS | | NOT PLANNED AT THIS TIME. | | | | HOO NOTE: THE LICENSEE CALLED AT 0308 TO UPDATE THIS EVENT TO REFLECT | | A 4 HOUR REPORTABLE REQUIREMENT FOR THE RPS ACTUATION. | | BECAUSE THERE WAS SIGNIFICANT OVERLAP BETWEEN THE TWO REPORTS, | | THE TEXT OF THE INITIAL NOTIFICATION WAS MODIFIED TO REFLECT | | THE UPDATED INFORMATION AS APPROPRIATE. | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 27678 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: INDIAN POINT REGION: 1 |NOTIFICATION DATE: 08/16/94 | |UNIT: [ ] [3] [ ] STATE: NY |NOTIFICATION TIME: 03:10 [ET]| |RX TYPE: [2] W-4-LP,[3] W-4-LP |EVENT DATE: 08/16/94 | +------------------------------------------------+EVENT TIME: 00:35[EDT]| |NRC NOTIFIED BY: CARL SMYERS |LAST UPDATE DATE: 08/16/94 | |HQ OPS OFFICER: THOMAS ANDREWS +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |RICHARD KEIMIG 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 +------------------------------------------------------------------------------+ | THE NEW YORK DEPARTMENT OF ENVIRONMENTAL CONSERVATION WAS NOTIFIED BY A | | CONTRACTOR REGARDING THE FAILURE OF THE "31" FUEL OIL STORAGE TANK LEAK | | TEST. THERE IS NO OBSERVABLE LEAKAGE TO THE ENVIRONMENT. THE CALCULATED | | LEAKAGE IS 0.129 GALLONS PER HOUR. THE LEAK RATE SPECIFICATION IS 0.050 | | GALLONS PER HOUR. | | | | THE LICENSEE IS MAKING PREPARATIONS TO REVERIFY THE SYSTEM LINEUP TO | | REPERFORM THE TEST WITH THE CONTRACTOR. THE "31" EMERGENCY DIESEL | | GENERATOR IS ALREADY OUT OF SERVICE FOR MAINTENANCE SO THIS DOES NOT AFFECT | | THE OPERABILITY OF THE DIESEL AT THIS TIME. | | | | THE NRC RESIDENT INSPECTOR WILL BE NOTIFIED BY THE LICENSEE. NO OTHER | | NOTIFICATIONS ARE PLANNED AT THIS TIME. | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 27679 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: SUMMER REGION: 2 |NOTIFICATION DATE: 08/16/94 | |UNIT: [1] [ ] [ ] STATE: SC |NOTIFICATION TIME: 15:16 [ET]| |RX TYPE: [1] W-3-LP |EVENT DATE: 08/16/94 | +------------------------------------------------+EVENT TIME: 14:18[EDT]| |NRC NOTIFIED BY: FOWLKES |LAST UPDATE DATE: 08/16/94 | |HQ OPS OFFICER: GREG SCARFO +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |GEORGE AL BELISLE RDO | |DUNE 73.71(b)(1) UNAUTHORIZED ENTRY | | | | | | | | | | | | | | +-----+----------+-------+--------+--------------+--+--------+-----------------+ |UNIT |SCRAM CODE|RX CRIT|INIT PWR| INIT RX MODE |CURR PWR| CURR RX MODE | +-----+----------+-------+--------+-----------------+--------+-----------------+ | 1 | N Y 80 POWER OPERATION | 80 POWER OPERATION | | | | | | | | | +-----+---------------------------------------------+--------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | UNAUTHORIZED ENTRY INTO PROTECTED AREA. NOT IMMEDIATELY COMPENSATED BUT | | COMPENSATED NOW. SEE HOO LOG FOR DETAILS. THE LICENSEE INFORMED THE NRC | | RESIDENT INSPECTOR. | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 27680 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: BROWNS FERRY REGION: 2 |NOTIFICATION DATE: 08/16/94 | |UNIT: [ ] [2] [ ] STATE: AL |NOTIFICATION TIME: 15:33 [ET]| |RX TYPE: [1] GE-4,[2] GE-4,[3] GE-4 |EVENT DATE: 08/16/94 | +------------------------------------------------+EVENT TIME: 13:50[CDT]| |NRC NOTIFIED BY: SMITH |LAST UPDATE DATE: 08/16/94 | |HQ OPS OFFICER: GREG SCARFO +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |GEORGE AL BELISLE RDO | |APRE 50.72(b)(2)(vi) OFFSITE NOTIFICATION | | | | | | | | | | | | | | +-----+----------+-------+--------+--------------+--+--------+-----------------+ |UNIT |SCRAM CODE|RX CRIT|INIT PWR| INIT RX MODE |CURR PWR| CURR RX MODE | +-----+----------+-------+--------+-----------------+--------+-----------------+ | | | | | 2 | N Y 98 POWER OPERATION | 98 POWER OPERATION | | | | | +-----+---------------------------------------------+--------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | THE ALABAMA DEPARTMENT OF ENVIRONMENTAL MANAGEMENT (DEM) WAS INFORMED OF A | | TEN GALLON SPILL OF SEWAGE INTO THE TENNESSEE RIVER. | | | | THE ALABAMA DEM WAS NOTIFIED OF A TEN GALLON SPILL OF SEWAGE INTO THE | | TENNESSEE RIVER. THE CAUSE OF THE SPILL WAS THE FAILURE OF TWO LIFT PUMPS | | AT THE SITE PUMP STATION. WITHOUT THE LIFT PUMPS, SEWAGE OVERFLOWED A | | RECEIVING TANK TO A MANWAY, WHICH OVERFLOWED INTO A STORM DRAIN. THE STORM | | DRAIN RELEASED THE SEWAGE TO THE TENNESSEE RIVER VIA A FOREBAY. THIS IS A | | VIOLATION OF THE NATIONAL POLLUTION DISCHARGE AND ELIMINATION SYSTEM | | (NPDES) PERMIT. | | | | OPERATORS ARE USING MANUAL LIFT PUMPS TO RELIEVE THE OVERFLOW CONDITION AT | | THE RECEIVING TANK. THE LICENSEE INFORMED THE NRC RESIDENT INSPECTOR. | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 27681 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: ARKANSAS NUCLEAR REGION: 4 |NOTIFICATION DATE: 08/16/94 | |UNIT: [1] [ ] [ ] STATE: AR |NOTIFICATION TIME: 16:35 [ET]| |RX TYPE: [1] B&W-L-LP,[2] CE |EVENT DATE: 08/16/94 | +------------------------------------------------+EVENT TIME: 14:50[CDT]| |NRC NOTIFIED BY: SCHEIDE |LAST UPDATE DATE: 08/16/94 | |HQ OPS OFFICER: GREG SCARFO +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |VANDENBURG RDO | |DUNE 73.71(b)(1) UNAUTHORIZED ENTRY | | | | | | | | | | | | | | +-----+----------+-------+--------+--------------+--+--------+-----------------+ |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 +------------------------------------------------------------------------------+ | UNAUTHORIZED ENTRY INTO THE PROTECTED AREA. IMMEDIATE COMPENSATORY | | MEASURES TAKEN ON DISCOVERY. SEE HOO LOG FOR DETAILS. THE LICENSEE WILL | | INFORM THE NRC RESIDENT INSPECTOR. | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 27682 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: PRAIRIE ISLAND REGION: 3 |NOTIFICATION DATE: 08/16/94 | |UNIT: [1] [2] [ ] STATE: MN |NOTIFICATION TIME: 16:15 [ET]| |RX TYPE: [1] W-2-LP,[2] W-2-LP |EVENT DATE: 08/16/94 | +------------------------------------------------+EVENT TIME: 15:30[CDT]| |NRC NOTIFIED BY: SILVERBERG |LAST UPDATE DATE: 08/16/94 | |HQ OPS OFFICER: GREG SCARFO +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |THOMAS BURDICK RDO | |APRE 50.72(b)(2)(vi) OFFSITE NOTIFICATION | | | | | | | | | | | | | | +-----+----------+-------+--------+--------------+--+--------+-----------------+ |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 Y 100 POWER OPERATION | 100 POWER OPERATION | | | | | +-----+---------------------------------------------+--------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | THE FOLLOWING IS THE TEXT OF A FACSIMILE SUBMITTED BY THE LICENSEE: | | "AT 1530 ON AUGUST 15, 1994, NSP's ENVIRONMENTAL & REGULATORY AFFAIRS | | DEPARTMENT (ERAD) CONTACTED THE MINNESOTA POLLUTION CONTROL AGENCY (MPCA) | | TO DISCUSS UNIT 1 STEAM GENERATOR BLOWDOWN TO THE RIVER WITH | | MONOETHANOLOAMINE (ETA) LEVELS ABOVE WHAT WAS PROPOSED BY NSP AND REVIEWED | | AND FOUND ACCEPTABLE BY THE MPCA. ETA LEVELS WERE ABOVE 7 PPM WITH A | | MAXIMUM OF 12 PPM FROM 1300 ON AUGUST 12, 1994, UNTIL 2300 ON AUGUST 13, | | 1994. | | | | THIS WAS DETERMINED TO BE A PERMIT VIOLATION BASED ON AN APPROVAL LETTER | | UNDER THE EXISTING PERMIT. PRESET LIMIT IS 4 PPM WITH A REQUEST SUBMITTED | | FOR INCREASE TO 6 PPM. | | | | THESE LEVELS ARE BELOW THE 25 PPM ETA LIMIT APPROVED FOR TWO WEEKS PRIOR TO | | EACH OUTAGE." END OF TEXT. | | | | THE LICENSEE INFORMED THE NRC RESIDENT INSPECTOR. | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 27683 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: HATCH REGION: 2 |NOTIFICATION DATE: 08/17/94 | |UNIT: [ ] [2] [ ] STATE: GA |NOTIFICATION TIME: 04:57 [ET]| |RX TYPE: [1] GE-4,[2] GE-4 |EVENT DATE: 08/17/94 | +------------------------------------------------+EVENT TIME: 01:00[CDT]| |NRC NOTIFIED BY: ED URQUHART |LAST UPDATE DATE: 08/17/94 | |HQ OPS OFFICER: WILLIAM HUFFMAN +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |GEORGE AL BELISLE RDO | |AINA 50.72(b)(2)(iii)(A) POT UNABLE TO SAFE SD | | | | | | | | | | | | | | +-----+----------+-------+--------+--------------+--+--------+-----------------+ |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 +------------------------------------------------------------------------------+ | HIGH PRESSURE COOLANT INJECTION (HPCI) TEMPORARILY INOPERABLE. | | | | AFTER PERFORMING A HPCI SYSTEM SURVEILLANCE, A HIGH POINT VENT ON THE HPCI | | PUMP DISCHARGE PIPING WAS OPENED TO CONFIRM THAT THE SYSTEM WAS FILLED. NO | | FLOW WAS OBTAINED FROM THE VENT AND, CONSEQUENTLY, THE DISCHARGE PIPING | | COULD NOT BE CONFIRMED FULL. HPCI WAS DECLARED INOPERABLE. | | | | THE SYSTEM STATIC PRESSURE WAS INCREASED FROM 30 PSI TO 38 PSI BY | | CONNECTING A DEMINERALIZED WATER SOURCE TO THE PUMP SUCTION. AT THAT POINT, | | FLOW WAS OBTAINED FROM THE HIGH POINT VENT AND CONTINUED TO FLOW AFTER THE | | DEMIN WATER SOURCE PRESSURE BOOST WAS REMOVED. THE LICENSEE SUSPECTS THAT | | THE HPCI PUMP DISCHARGE CHECK VALVE MAY HAVE BEEN STUCK CLOSED. THE HPCI | | SYSTEM VALVE LINEUP WAS RETURNED TO NORMAL AND HPCI DECLARED OPERABLE AT | | 0457 EDT. | | | | THE LICENSEE NOTES THAT THE DISCHARGE CHECK VALVE IS INSPECTED EVERY FIVE | | YEARS AND WAS LAST INSPECTED IN APRIL OF THIS YEAR. THE VALVE HAS NO | | PREVIOUS HISTORY OF PROBLEMS. A DEFICIENCY REPORT ON THE CHECK VALVE WAS | | GENERATED. | | | | THE NRC RESIDENT INSPECTOR HAS BEEN NOTIFIED. | +------------------------------------------------------------------------------+