U.S. Nuclear Regulatory Commission Operations Center Event Reports For 05/03/95 - 05/04/95 ** EVENT NUMBERS ** 28746 28752 28753 28754 28755 28756 28757 28758 +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 28746 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: CATAWBA REGION: 2 |NOTIFICATION DATE: 05/01/95 | |UNIT: [ ] [2] [ ] STATE: SC |NOTIFICATION TIME: 17:27 [ET]| |RX TYPE: [1] W-4-LP,[2] W-4-LP |EVENT DATE: 05/01/95 | +------------------------------------------------+EVENT TIME: 16:03[EDT]| |NRC NOTIFIED BY: REESE |LAST UPDATE DATE: 05/03/95 | |HQ OPS OFFICER: GREG SCARFO +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |PAUL FREDRICKSON 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 | +-----+----------+-------+--------+-----------------+--------+-----------------+ | | | | | 2 | M/R Y 14 STARTUP | 0 HOT STANDBY | | | | | +-----+---------------------------------------------+--------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | A MANUAL REACTOR TRIP WAS INITIATED ON A LOSS OF MAIN FEEDWATER DUE TO THE | | FAILURE OF A LOW-PRESSURE FEEDWATER HEATER BYPASS VALVE TO OPEN AND THE | | SUBSEQUENT CONDENSATE BOOSTER PUMP TRIP. | | | | DURING A REACTOR STARTUP, WATER LEVEL IN LOW-PRESSURE FEEDWATER HEATERS | | "2F" & "2G" REACHED THE HI-HI ISOLATION SETPOINT AND ISOLATED. THIS | | RESULTED IN A TRIP OF THE CONDENSATE BOOSTER PUMPS AND A TRIP OF THE MAIN | | FEEDWATER PUMPS ON LOW SUCTION PRESSURE. OPERATORS MANUALLY TRIPPED THE | | UNIT BEFORE WATER LEVEL IN THE STEAM GENERATORS REACHED THE LOW-LEVEL | | REACTOR TRIP SETPOINT. ALL RODS FULLY INSERTED ON THE REACTOR TRIP. A | | TURBINE TRIP ALSO OCCURRED ON THE MAIN FEEDWATER ISOLATION. NO PRIMARY OR | | SECONDARY PORVs OR SAFETY VALVES LIFTED DURING THE TRIP. THE AUXILIARY | | FEEDWATER (AFW) SYSTEM ACTUATED AND REDUCED Tave BELOW 553 DEGREES F, THE | | TEMPERATURE AT WHICH THE P-12 PERMISSIVE (LOW Tave CONDENSER DUMP BLOCK) IS | | ENABLED (LOWEST Tave RECORDED WAS 547 DEGREES F). THE STEAM DUMP SYSTEM | | ACTUATED AFTER Tave RECOVERED AND THE P-12 PERMISSIVE WAS CLEARED. PRIMARY | | AND SECONDARY PRESSURES AND LEVELS REMAINED WITHIN EXPECTED BANDS. NO | | OTHER ENGINEERED SAFETY FEATURE (ESF) ACTUATIONS OCCURRED. ALL PLANT LOADS | | TRANSFERRED PROPERLY TO OFFSITE POWER SOURCES. | | | | THE CAUSE OF THE HI-HI LEVEL IN THE AFFECTED LOW-PRESSURE FEEDWATER HEATERS | | IS DUE TO THE FAILURE OF THE FEEDWATER HEATER BYPASS VALVE TO OPEN AT THE | | HI-LEVEL SETPOINT. THE CAUSE OF THIS FAILURE IS UNDER INVESTIGATION. | | | | CURRENTLY, THE UNIT IS STABLE IN HOT STANDBY. OFFSITE POWER IS STABLE AND | | SUPPLYING PLANT LOADS. ALL EDGs AND ECCS ARE OPERABLE AND AVAILABLE AT | | THIS TIME. THE LICENSEE INFORMED THE NRC RESIDENT INSPECTOR. | | | | * * * UPDATE 05/03/95 1304EDT FROM:TOWER BY:SCARFO * * * | | AN INVESTIGATION DETERMINED THAT THE CAUSE OF THE LOSS OF FEEDWATER WAS THE | | INADVERTANT CLOSURE OF A FEEDWATER HEATER BYPASS VALVE DURING THE RETURN TO | | SERVICE OF THE "F" & "G" FEEDWATER HEATERS. THE LICENSEE ATTRIBUTES THIS | | EVENT TO PERSONNEL ERROR. THE LICENSEE INFORMED THE NRC RESIDENT | | INSPECTOR. R2DO (LESSER) NOTIFIED. | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 28752 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: VERMONT YANKEE REGION: 1 |NOTIFICATION DATE: 05/03/95 | |UNIT: [1] [ ] [ ] STATE: VT |NOTIFICATION TIME: 04:33 [ET]| |RX TYPE: [1] GE-4 |EVENT DATE: 05/03/95 | +------------------------------------------------+EVENT TIME: 00:15[EDT]| |NRC NOTIFIED BY: MCKENNEY |LAST UPDATE DATE: 05/03/95 | |HQ OPS OFFICER: CHAUNCEY GOULD +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |RICHARD CONTE RDO | |AIND 50.72(b)(2)(iii)(D) ACCIDENT MITIGATION | | |NLCO TECH SPEC LCO A/S | | | | | | | | | | | +-----+----------+-------+--------+--------------+--+--------+-----------------+ |UNIT |SCRAM CODE|RX CRIT|INIT PWR| INIT RX MODE |CURR PWR| CURR RX MODE | +-----+----------+-------+--------+-----------------+--------+-----------------+ | 1 | N Y 10 STARTUP | 10 STARTUP | | | | | | | | | +-----+---------------------------------------------+--------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | THE LICENSEE ENTERED A 7 DAY LCO ACTION STATEMENT WHEN THEY DECLARED HPCI | | INOPERABLE. | | | | HPCI WAS DECLARED INOPERABLE WHEN THEY TOOK IT OUT OF SERVICE IN ORDER TO | | PERFORM MAINTENANCE ON THE 14 HPCI STEAM SUPPLY VALVE. HPCI WAS RETURNED TO | | SERVICE AND THEY EXITED THE LCO AT 03:20. THE RI AND STATE WILL BE | | INFORMED. | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 28753 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: NINE MILE POINT REGION: 1 |NOTIFICATION DATE: 05/03/95 | |UNIT: [1] [ ] [ ] STATE: NY |NOTIFICATION TIME: 04:52 [ET]| |RX TYPE: [1] GE-2,[2] GE-5 |EVENT DATE: 05/03/95 | +------------------------------------------------+EVENT TIME: 04:15[EDT]| |NRC NOTIFIED BY: SHELTON |LAST UPDATE DATE: 05/03/95 | |HQ OPS OFFICER: CHAUNCEY GOULD +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |RICHARD CONTE 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 | +-----+----------+-------+--------+-----------------+--------+-----------------+ | 1 | N Y 100 POWER OPERATION | 100 POWER OPERATION | | | | | | | | | +-----+---------------------------------------------+--------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | THE PLANT DISCOVERED THAT THEIR SPDS IS INOPERABLE. | | | | THIS WAS DETERMINED WHEN THEY FOUND THAT SPDS WAS NOT UPDATING PROPERLY | | WITH RESPECT TO PLANT DATA. THE PROCESS COMPUTER IS OPERATING AT THIS TIME | | AND PROVIDING ALARM STATUS. THEY ALSO HAVE OTHER REDUNDANT CONTROL | | INSTRUMENTATION AVAILABLE. THE CAUSE OF THE CONDITION IS UNDER | | INVESTIGATION AND THEY HAVE CALLED PERSONNEL IN TO GET THE SYSTEM | | RESTARTED. THE RI WAS INFORMED. | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |HOSPITAL | |EVENT NUMBER: 28754 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |LICENSEE: RIVERSIDE WALTER REED HOSPITAL |NOTIFICATION DATE: 05/03/95 | | CITY: GLOUSTER REGION: 2 |NOTIFICATION TIME: 11:51 [ET]| | COUNTY: STATE: VA |EVENT DATE: 05/03/95 | |LICENSE#: 4523447-01 AGREEMENT: N |EVENT TIME: 11:00[EDT]| | DOCKET: |LAST UPDATE DATE: 05/03/95 | | +-----------------------------+ | |PERSON ORGANIZATION| | |MARK LESSER RDO | | | | +------------------------------------------------+ | |NRC NOTIFIED BY: RILEY | | |HQ OPS OFFICER: GREG SCARFO | | +------------------------------------------------+ | |EMERGENCY CLASS: NOT APPLICABLE | | |10 CFR SECTION: | | |LADM 35.33(a) MED MISADMINISTRATION | | | | | | | | | | | | | | +------------------------------------------------+-----------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | CARDIOLITE WAS ADMINISTERED FOR A BONE SCAN INSTEAD OF TECHNETIUM-MDP. | | | | DR. RILEY OF THE RIVERSIDE WALTER REED HOSPITAL OF GLOUCESTER, VIRGINIA, | | REPORTED THAT A FEMALE PATIENT RECEIVED 25.4 MILLICURIES OF CARDIOLITE | | (TC-99M) FOR A BONE SCAN INSTEAD OF TECHNETIUM-MDP. THE ATTENDING | | PHYSICIAN HAD PRESCRIBED 25.4 MILLICURIES OF TECHNETIUM-MDR, HOWEVER, THE | | NUCLEAR MEDICINE TECHNICIAN ADMINISTERED THE CARDIOLITE INADVERTENTLY. | | CARDIOLITE IS USUALLY ADMINISTERED FOR HEART STUDIES. A DOSE OF 1.36 RADS | | HAS BEEN CALCULATED TO THE OVARIES. THE ATTENDING PHYSICIAN, PATIENT, AND | | TECHNICIAN WERE NOTIFIED OF THE MISADMINISTRATION. NO ADVERSE AFFECTS ARE | | ANTICIPATED. | | | | CORRECTIVE ACTIONS INCLUDE THE SEPARATION OF THE CARDIOLITE FROM THE | | TECHNETIUM-MDP, ADDITION OF A RED DOT ON THE PIGS HOLDING CARDIOLITE, AND | | NEW LASER LABELS ON THE RADIOISOTOPE PACKAGING. | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 28755 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: SAN ONOFRE REGION: 4 |NOTIFICATION DATE: 05/03/95 | |UNIT: [1] [2] [3] STATE: CA |NOTIFICATION TIME: 15:25 [ET]| |RX TYPE: [1] W-3-LP,[2] CE,[3] CE |EVENT DATE: 03/14/95 | +------------------------------------------------+EVENT TIME: 00:00[PDT]| |NRC NOTIFIED BY: STONE |LAST UPDATE DATE: 05/03/95 | |HQ OPS OFFICER: GREG SCARFO +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: | | |CDEG 21.21(c)(3)(i) DEFECTS/NONCOMPLIANCE | | | |VERNON HODGE NRR | | | | | | | | | | +-----+----------+-------+--------+--------------+--+--------+-----------------+ |UNIT |SCRAM CODE|RX CRIT|INIT PWR| INIT RX MODE |CURR PWR| CURR RX MODE | +-----+----------+-------+--------+-----------------+--------+-----------------+ | 1 | N N 0 DECOMMISSIONED | 0 DECOMMISSIONED | | 2 | N N 0 REFUELING | 0 REFUELING | | 3 | N Y 99 POWER OPERATION | 99 POWER OPERATION | +-----+---------------------------------------------+--------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | INCORRECT LUGS USED ON SWITCHGEAR. | | | | IT WAS DETERMINED THAT THE AMP INCORPORATED INSULATED LUGS USED WITH THE | | #14 GAUGE WIRE IN ABB 4160V-5HK AND 480VK LINE SWITCHGEAR DELIVERED IN 1975 | | BY ITE ARE OVERSIZED AND COULD FAIL DUE TO "PULL-OUT" FROM ANY UNUSUAL LOAD | | APPLICATION. THE CAUSE OF THE DEFECT IS BELIEVED TO BE THE MISMARKING OF | | THE LUGS, WHICH WERE MARKED AS "#12-10". THE MISMARKED LUGS WERE SUPPLIED | | WITH SWITCHGEAR THAT WAS DELIVERED TO THE PLANT IN 1976. | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 28756 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: SOUTH TEXAS REGION: 4 |NOTIFICATION DATE: 05/03/95 | |UNIT: [1] [ ] [ ] STATE: TX |NOTIFICATION TIME: 15:24 [ET]| |RX TYPE: [1] W-4-LP,[2] W-4-LP |EVENT DATE: 05/02/95 | +------------------------------------------------+EVENT TIME: 17:10[CDT]| |NRC NOTIFIED BY: PINZON |LAST UPDATE DATE: 05/03/95 | |HQ OPS OFFICER: GREG SCARFO +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |ALLEN JOHNSON RDO | |NLTR LICENSEE 24 HR REPORT | | | | | | | | | | | | | | +-----+----------+-------+--------+--------------+--+--------+-----------------+ |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 MODE CHANGE PROHIBITED BY TECHNICAL SPECIFICATIONS (T/S). | | | | THE FOLLOWING IS THE TEXT OF A FACSIMILE SUBMITTED BY THE LICENSEE: | | "THE FOLLOWING APPLIES TO UNIT 1 ONLY. UNIT 1 IS IN MODE 1 AT 100% POWER. | | ON MAY 2, 1995, IT WAS DETERMINED THAT THE EVENTS SURROUNDING AN APRIL 8, | | 1995, TRIP OF STANDBY DIESEL GENERATOR 12 CONSTITUTED A REPORTABLE | | CONDITION. SPECIFICALLY, IT WAS DETERMINED THAT A VIOLATION OF TECHNICAL | | SPECIFICATION 3.0.4 OCCURRED IN THAT MODE CHANGE WAS MADE ON UNIT 1 WITH A | | TECHNICALLY INOPERABLE STANDBY DIESEL GENERATOR. | | | | WHILE PERFORMING A 24-HOUR RUN OF STANDBY DIESEL GENERATOR 12, HIGH FIELD | | VOLTAGE AND STATOR TEMPERATURE INDICATIONS WERE ENCOUNTERED. AFTER | | DISCUSSIONS WITH THE VENDOR, IT WAS CONCLUDED THAT THE CONDITIONS | | ENCOUNTERED WERE CAUSED BY THE NEWLY RECONDITIONED SLIP RINGS AND WERE TO | | BE EXPECTED. BASED ON THE AVAILABLE INFORMATION AT THE TIME, STANDBY | | DIESEL GENERATOR 12 WAS DECLARED OPERABLE. THE RUN OF THE DIESEL WAS | | CONTINUED AS PART OF THE 24-HOUR SURVEILLANCE. APPROXIMATELY TEN HOURS | | INTO THE RUN, A TRANSITION TO MODE 4 WAS MADE BY THE PLANT. | | | | APPROXIMATELY THREE HOURS LATER, THE DIESEL GENERATOR OUTPUT BREAKER | | OPENED. THE DIESEL WAS MANUALLY TRIPPED AND DECLARED INOPERABLE. IT WAS | | DETERMINED THAT THE CAUSE OF THE TRIP WAS A FAILED RING CONNECTOR (LUG). | | BASED ON THIS INFORMATION, IT WAS DETERMINED THAT THE EARLIER PROBLEMS WITH | | HIGHER THAN NORMAL STATOR TEMPERATURE AND FIELD VOLTAGE WERE THE RESULT OF | | THE FAULTY LUG, AND AS SUCH, STANDBY DIESEL GENERATOR 12 WAS TECHNICALLY | | INOPERABLE. WITH STANDBY DIESEL GENERATOR 12 TECHNICALLY INOPERABLE, THE | | MODE CHANGE IS REPORTABLE AS AN OPERATION PROHIBITED BY TECHNICAL | | SPECIFICATIONS. | | | | THIS IS BEING REPORTED AS A VIOLATION OF THE PLANT OPERATING LICENSE NO. | | NPF-76 (2G) SECTION 2.C(2) (24 HOUR REPORT)." END OF TEXT. | | | | THE LICENSEE INFORMED THE NRC RESIDENT INSPECTOR. | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 28757 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: LASALLE REGION: 3 |NOTIFICATION DATE: 05/03/95 | |UNIT: [ ] [2] [ ] STATE: IL |NOTIFICATION TIME: 17:24 [ET]| |RX TYPE: [1] GE-5,[2] GE-5 |EVENT DATE: 05/03/95 | +------------------------------------------------+EVENT TIME: 13:47[CDT]| |NRC NOTIFIED BY: REIS |LAST UPDATE DATE: 05/03/95 | |HQ OPS OFFICER: GREG SCARFO +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |GEOFFREY WRIGHT 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 COLD SHUTDOWN | 0 COLD SHUTDOWN | | | | | +-----+---------------------------------------------+--------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | A HIGH PRESSURE COOLANT INJECTION (HPCI) SYSTEM ACTUATION AND SEVERAL OTHER | | ENGINEERED SAFETY FEATURES ACTUATION SIGNALS WERE PRESENT DUE TO A SPURIOUS | | ELECTRICAL SPIKE IN AN INSTRUMENT RACK. | | | | THE FOLLOWING IS THE TEXT OF A FACSIMILE SUBMITTED BY THE LICENSEE: | | "AT 1347 (CDT) ON 5/3/95, DURING THE PERFORMANCE OF LIP-NB-618, 'UNIT 2 | | REACTOR VESSEL WATER LEVEL REFERENCE LEG CONTINUOUS BACKFILL PANEL | | 2C11-P002 OPERATION', WHILE VALVING PANEL 2C11-P002 ONTO ITS ASSOCIATED | | INSTRUMENT REFERENCE LEG, AN INSTRUMENT RACK SPIKE OCCURRED. THIS ACTION | | RESULTED IN A LOW RWL 1/2 SCRAM, A 1/2 ISOLATION SIGNAL TO PCIS GROUPS 1, | | 2, 3, 4, 5, 6, 7 & 10, A 1/2 INITIATION SIGNAL TO ARI & A HPCS DIESEL | | GENERATOR & PUMP INITIATION. THE BACKFILL RACK WAS IMMEDIATELY ISOLATED. | | THE HPCS PUMP INJECTED INTO THE RPV RAISING RWL FROM 47" TO 57" ON NARROW | | RANGE. THE HPCS INJECTION WAS SECURED IN 7 SECONDS. THE LOW LEVEL | | INITIATION SIGNAL WAS IMMEDIATELY RESET AND THE 2B D/G WAS SHUTDOWN AT | | 13:49 ON 5/3/95. THE 1/2 SCRAM WAS RESET & THE PCIS SYSTEM WAS RESET. AN | | INVESTIGATION AS TO WHY THE SPIKE OCCURRED IS IN PROGRESS. AT THE TIME OF | | THE EVENT, UNIT 2 WAS IN O.C.#4 WITH ALL RODS FULL IN." END OF TEXT. | | | | APPROXIMATELY 2000 GALLONS OF COOLANT WAS INJECTED INTO THE REACTOR COOLANT | | SYSTEM BY THE HPCI SYSTEM. OTHER THAN THE HPCI INJECTION VALVE, NO OTHER | | ESF SYSTEM VALVES CHANGED POSITION DUE TO THE ESF SIGNALS. AN | | INVESTIGATION INTO THE CAUSE OF THE ELECTRICAL SPIKE IS ONGOING. THE | | LICENSEE INFORMED THE NRC RESIDENT INSPECTOR. | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 28758 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: SUSQUEHANNA REGION: 1 |NOTIFICATION DATE: 05/03/95 | |UNIT: [1] [ ] [ ] STATE: PA |NOTIFICATION TIME: 23:42 [ET]| |RX TYPE: [1] GE-4,[2] GE-4 |EVENT DATE: 05/03/95 | +------------------------------------------------+EVENT TIME: 19:50[EDT]| |NRC NOTIFIED BY: BOYLE |LAST UPDATE DATE: 05/03/95 | |HQ OPS OFFICER: GREG SCARFO +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |RICHARD CONTE RDO | |AMED 50.72(b)(2)(v) OFFSITE MEDICAL | | | | | | | | | | | | | | +-----+----------+-------+--------+--------------+--+--------+-----------------+ |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 +------------------------------------------------------------------------------+ | THREE WORKERS WERE INJURED WHILE ISOLATING A LEAK IN THE MAIN GENERATOR | | HYDROGEN SEAL OIL SYSTEM. | | | | THE FOLLOWING IS THE TEXT OF A FACSIMILE SUBMITTED BY THE LICENSEE: | | "WITH THE PLANT IN COLD SHUTDOWN, CONDITION 4, A MAIN GENERATOR AIR TEST | | WAS IN PROGRESS UTILIZING NITROGEN AS A TEST GAS. OPERATORS WERE | | DISPATCHED TO RESPOND TO PRESSURE REGULATION OSCILLATIONS ON THE HYDROGEN | | SEAL OIL SYSTEM. OPERATORS SUBSEQUENTLY REPORTED A SERIOUS OIL LEAK AT THE | | SEAL OIL SKID CAUSING DEGRADED SEAL OIL SYSTEM PRESSURE. THE LOSS OF | | PRESSURE RESULTED IN NITROGEN ESCAPING FROM THE GENERATOR. A HABITABILITY | | EVACUATION OF THE TURBINE BUILDING WAS ORDERED. | | | | OPERATORS RESPONDED IN PROTECTIVE CLOTHING AND SELF CONTAINED BREATHING | | APPARATUS TO SECURE THE LEAK AND VENT THE GENERATOR NITROGEN PRESSURE TO | | OUTSIDE ATMOSPHERE. | | | | THREE OPERATORS SUSTAINED INJURIES RESPONDING TO THE SEAL OIL LEAK. TWO | | EXPERIENCED EYE IRRITATION FROM THE OIL AND THE THIRD EXPERIENCED | | RESPIRATORY PROBLEMS. THEY WERE ALL SEND TO A LOCAL HOSPITAL FOR | | TREATMENT. | | | | THE CAUSE OF THE OIL LEAK IS STILL UNDER INVESTIGATION." END OF TEXT. | | | | THE SOURCE OF THE OIL LEAK WAS AN OIL FILTER IN THE OIL CLEANSING SYSTEM. | | THE LEAK WAS ISOLATED BY SWAPPING TO A SECOND FILTER WITHIN THE SYSTEM. THE | | LICENSEE INFORMED THE NRC RESIDENT INSPECTOR. | +------------------------------------------------------------------------------+