U.S. Nuclear Regulatory Commission Operations Center Event Reports For 02/10/98 - 02/11/98 ** EVENT NUMBERS ** 33507 33680 33683 33684 33685 33686 33687 33688 33689 33690 33691 33692 !!!!!!!!! THIS EVENT HAS BEEN RETRACTED. THIS EVENT HAS BEEN RETRACTED !!!!!!! +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 33507 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: ZION REGION: 3 |NOTIFICATION DATE: 01/08/98 | |UNIT: [1] [2] [ ] STATE: IL |NOTIFICATION TIME: 19:44 [ET]| |RX TYPE: [1] W-4-LP,[2] W-4-LP |EVENT DATE: 01/08/98 | +------------------------------------------------+EVENT TIME: 16:00[CST]| |NRC NOTIFIED BY: BASNER |LAST UPDATE DATE: 02/10/98 | |HQ OPS OFFICER: CHAUNCEY GOULD +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |JOHN JACOBSON RDO | |AINB 50.72(b)(2)(iii)(B) POT RHR INOP | | |NLCO TECH SPEC LCO A/S | | | | | | | | | | | +-----+----------+-------+--------+--------------+--+--------+-----------------+ |UNIT |SCRAM CODE|RX CRIT|INIT PWR| INIT RX MODE |CURR PWR| CURR RX MODE | +-----+----------+-------+--------+-----------------+--------+-----------------+ | 1 | N N 0 REFUELING | 0 REFUELING | | 2 | N N 0 COLD SHUTDOWN | 0 COLD SHUTDOWN | | | | | +-----+---------------------------------------------+--------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | ALL FIVE UNIT 1 AND 2 EDGs WERE DECLARED INOPERABLE BUT FUNCTIONAL. | | | | THE LICENSEE DECLARED ALL FIVE UNIT 1 AND 2 EMERGENCY DIESEL GENERATORS | | (EDG) INOPERABLE DUE TO A FAILURE TO TEST A CONTACT ASSOCIATED WITH THE | | EDG OUTPUT BREAKER AND THE ENGINEERED SAFETY FEATURE (ESF) BUS MAIN FEEDER | | BREAKER. THIS CONTACT IS DESIGNED TO ENSURE THAT THE EDG DOES NOT PARALLEL | | ITSELF WITH THE NON-ESF BUS. A PROCEDURE HAS BEEN WRITTEN TO TEST THE | | CONTACT. UNIT 2 HAS BEEN PLACED IN A 24-HOUR LIMITING CONDITION FOR | | OPERATION (LCO) TO DEPRESSURIZE THE REACTOR COOLANT SYSTEM. THE SERVICE | | WATER, COMPONENT COOLING WATER, AND RESIDUAL HEAT REMOVAL SYSTEMS FOR BOTH | | UNITS ARE INOPERABLE. ALL OFFSITE POWER SOURCES ARE AVAILABLE, AND ALL | | FIVE EDGs ARE FUNCTIONAL. | | | | THE LICENSEE INFORMED THE NRC RESIDENT INSPECTOR. | | | | * * * UPDATE AT 0124 ON 01/09/98 FROM GLENN KAHT ENTERED BY JOLLIFFE * * * | | | | THE LICENSEE SUCCESSFULLY TESTED BOTH UNIT 2 EDGs (#2A AND #2B) AND THE | | SWING EDG (#0). AT 0005 CST ON 01/09/98, THE LICENSEE DECLARED THE | | FOLLOWING EQUIPMENT/SYSTEMS OPERABLE: #2A EDG, #2B EDG, #0 EDG, SERVICE | | WATER SYSTEM, COMPONENT COOLING WATER SYSTEM, AND RESIDUAL HEAT REMOVAL | | SYSTEM. THE 24-HOUR LCO WAS ALSO EXITED AT THAT TIME. BOTH UNIT 1 EDGs | | (#1A AND #1B) ARE STILL INOPERABLE BUT FUNCTIONAL. | | | | THE LICENSEE PLANS TO INFORM THE NRC RESIDENT INSPECTOR. THE NRC | | OPERATIONS OFFICER NOTIFIED THE R3DO (JOHN JACOBSON). | | | | * * * UPDATE AT 1229 ON 02/10/98 FROM BOB GODLEY TAKEN BY JOLLIFFE * * * | | | | DURING A REVIEW OF THE SURVEILLANCE TEST PROCEDURES AND CIRCUITRY | | ASSOCIATED WITH THE ABOVE EQUIPMENT AND SYSTEMS, THE LICENSEE DETERMINED | | THAT THE CONTACT ASSOCIATED WITH THE INTERLOCK BETWEEN THE EDG OUTPUT | | BREAKER AND THE ESF BUS MAIN FEEDER BREAKER IS EXPLICITLY VERIFIED TO CLOSE | | (i.e. NOT FAILED OPEN) AND IS INHERENTLY VERIFIED TO OPEN (i.e. NOT FAILED | | CLOSED). SUBSEQUENT TESTING OF THIS CONTACT CONFIRMED THIS. THE NORMAL | | SURVEILLANCE TESTS OF THIS CONTACT WERE PERFORMED WITHIN THE NORMAL TIME | | PERIOD. THEREFORE, THE LICENSEE DESIRES TO RETRACT THIS EVENT. | | | | THE LICENSEE NOTIFIED THE NRC RESIDENT INSPECTOR. THE NRC OPERATIONS | | OFFICER NOTIFIED THE R3DO (TOM KOZAK). | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 33680 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: MCGUIRE REGION: 2 |NOTIFICATION DATE: 02/09/98 | |UNIT: [1] [ ] [ ] STATE: NC |NOTIFICATION TIME: 12:07 [ET]| |RX TYPE: [1] W-4-LP,[2] W-4-LP |EVENT DATE: 02/09/98 | +------------------------------------------------+EVENT TIME: 10:25[EST]| |NRC NOTIFIED BY: HOWARD |LAST UPDATE DATE: 02/10/98 | |HQ OPS OFFICER: CHAUNCEY GOULD +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |THOMAS DECKER RDO | |ARPS 50.72(b)(2)(ii) RPS ACTUATION | | |AESF 50.72(b)(2)(ii) ESF ACTUATION | | |AUNA 50.72(b)(1)(ii)(A) UNANALYZED COND OP | | | | | | | | +-----+----------+-------+--------+--------------+--+--------+-----------------+ |UNIT |SCRAM CODE|RX CRIT|INIT PWR| INIT RX MODE |CURR PWR| CURR RX MODE | +-----+----------+-------+--------+-----------------+--------+-----------------+ | 1 | M/R Y 100 POWER OPERATION | 0 HOT STANDBY | | | | | | | | | +-----+---------------------------------------------+--------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | THE REACTOR WAS MANUALLY TRIPPED FROM 100% POWER AFTER SEVERAL CONTROL RODS | | DROPPED INTO THE CORE. | | | | DURING TROUBLESHOOTING A ROD CONTROL URGENT FAILURE ALARM, SEVERAL CONTROL | | RODS DROPPED INTO THE REACTOR CORE. THE REACTOR WAS MANUALLY TRIPPED, AND | | EMERGENCY PROCEDURE #E-0 WAS IMPLEMENTED. DURING THIS EVENT, THE TURBINE | | AUTOMATICALLY TRIPPED AS REQUIRED, ALL CONTROL RODS FULLY INSERTED, NO ECCS | | INITIATED, AND NO SAFETY VALVES LIFTED. A MAIN FEEDWATER ISOLATION | | OCCURRED DURING THIS EVENT ON LOW Tave AND REACTOR TRIP. AUXILIARY | | FEEDWATER AUTOMATICALLY STARTED ON STEAM GENERATORS LO-LO LEVEL. UNIT 1 IS | | STABLE AT FULL TEMPERATURE AND PRESSURE (557øF AND 2235 PSIG). AT THIS | | TIME, MAIN FEEDWATER IS BEING ESTABLISHED, AND THEN AUXILIARY FEEDWATER | | WILL BE SECURED AND REALIGNED TO STANDBY READINESS. MCGUIRE DOES NOT HAVE | | A NEGATIVE FLUX RATE TRIP SIGNAL. THE LICENSEE IS INVESTIGATING THE CAUSE. | | | | THE LICENSEE INFORMED THE NRC RESIDENT INSPECTOR. | | | | * * * UPDATE AT 2106 ON 02/09/98 FROM MASON TO GOULD * * * | | | | THE LICENSEE IS EVALUATING THE POTENTIAL THAT THE DROPPED CONTROL RODS | | CONSTITUTED AN UNANALYZED CONDITION EVENT THAT SIGNIFICANTLY COMPROMISED | | PLANT SAFETY. THE LICENSEE DOES NOT HAVE AN ANALYSIS THAT BOUNDS THE | | COMBINATION OF CONTROL RODS THAT DROPPED INTO THE CORE AT THE START OF | | THE EVENT. THE EVENT CONSISTED OF MULTIPLE FAILURES THAT ARE BEYOND THE | | ASSUMPTIONS OF CHAPTER 15 OF THE UFSAR. FURTHER INFORMATION WILL BE | | PROVIDED AS IT BECOMES AVAILABLE. | | | | THE LICENSEE NOTIFIED THE NRC RESIDENT INSPECTOR. THE NRC OPERATIONS | | OFFICER NOTIFIED THE R2DO (TOM DECKER). | | | | * * * UPDATE AT 2131 ON 02/10/98 FROM PICKLER TO GOULD * * * | | | | THE REACTOR WAS ANALYZED AND COMPARED TO THE LICENSING BASIS DROPPED ROD | | TRANSIENTS IN SECTION 15.4.3 OF THE UFSAR. THE RODS FROM GROUP 2 OF | | CONTROL BANK B (4 RODS) AND THE RODS FROM GROUP 2 OF SHUTDOWN BANK B | | (4 RODS) FELL INTO THE CORE DURING TROUBLESHOOTING OF THE ROD CONTROL | | SYSTEM. THIS SPECIFIC DROPPED ROD COMBINATION WAS NOT EXPLICITLY ANALYZED | | IN THE LICENSING BASIS ANALYSIS. | | | | THE DEPARTURE FROM NUCLEATE BOILING RATIO CALCULATED BY THE EVENT SPECIFIC | | ANALYSIS IS BOUNDED BY THE EXISTING UFSAR DROPPED ROD TRANSIENTS. SINCE | | THE ACTUAL EVENT IS BOUNDED BY THE APPLICABLE UFSAR ANALYSIS, IT DOES NOT | | CONSTITUTE AN UNANALYZED CONDITION AS DESCRIBED IN 10 CFR 50.72(b)(ii)(A). | | PREPARATIONS FOR RESTART ARE CURRENTLY UNDERWAY. | | | | THE LICENSEE PLANS TO INFORM THE NRC RESIDENT INSPECTOR. THE R2DO (HAAG) | | WAS NOTIFIED BY THE NRC OPERATIONS OFFICER. | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 33683 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: BYRON REGION: 3 |NOTIFICATION DATE: 02/10/98 | |UNIT: [1] [ ] [ ] STATE: IL |NOTIFICATION TIME: 02:41 [ET]| |RX TYPE: [1] W-4-LP,[2] W-4-LP |EVENT DATE: 02/09/98 | +------------------------------------------------+EVENT TIME: 23:24[CST]| |NRC NOTIFIED BY: DOUG BOWMAN |LAST UPDATE DATE: 02/10/98 | |HQ OPS OFFICER: JOHN MacKINNON +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |TOM KOZAK 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 +------------------------------------------------------------------------------+ | WHILE RETURNING THE MAIN TURBINE TO SERVICE, ITS INTERCEPT AND REHEAT STOP | | VALVES UNEXPECTEDLY CLOSED. | | | | UNIT 1 WAS IN MODE 5 (COLD SHUTDOWN) WITH THE REACTOR TRIP BREAKERS OPEN | | AND ALL CONTROL RODS INSERTED. THE MAIN TURBINE WAS LATCHED WITH THE | | INTERCEPT AND REHEAT STOP VALVES OPEN AND THE THROTTLE VALVES AND GOVERNOR | | VALVES ISOLATED. A RETURN TO SERVICE WAS PROCESSED ON THE TURBINE TRIP | | CIRCUIT BREAKERS, WHICH (WHEN ENABLED) ALLOWED THE TURBINE TO TRIP DUE TO | | THE REACTOR TRIP BREAKERS BEING IN THE OPEN POSITION. THE INTERCEPT AND | | REHEAT STOP VALVES CLOSED WHEN THE TURBINE TRIP WAS RECEIVED. THERE WAS NO | | AFFECT ON THE PLANT FROM THE TURBINE TRIP. HUMAN ERROR WAS THE CAUSE OF | | THIS EVENT. | | | | THE NRC RESIDENT INSPECTOR WAS NOTIFIED OF THIS EVENT BY THE LICENSEE. | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 33684 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: POINT BEACH REGION: 3 |NOTIFICATION DATE: 02/10/98 | |UNIT: [1] [2] [ ] STATE: WI |NOTIFICATION TIME: 03:01 [ET]| |RX TYPE: [1] W-2-LP,[2] W-2-LP |EVENT DATE: 02/10/98 | +------------------------------------------------+EVENT TIME: 01:10[CST]| |NRC NOTIFIED BY: R PARLATO |LAST UPDATE DATE: 02/10/98 | |HQ OPS OFFICER: JOHN MacKINNON +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |TOM KOZAK 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 77 POWER OPERATION | 77 POWER OPERATION | | 2 | N Y 91 POWER OPERATION | 91 POWER OPERATION | | | | | +-----+---------------------------------------------+--------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | EMERGENCY DIESEL GENERATOR GO1 FOUND NOT TO HAVE SPRING LOADED FUEL | | INJECTOR LINKAGE | | | | AT 0110 CST ON 02/10/98 DURING MAINTENANCE OVERHAUL OF EMERGENCY DIESEL | | GENERATOR GO1, THE FUEL INJECTOR LINKAGE WAS FOUND TO BE SOLID RATHER THAN | | SPRING LOADED AS STATED IN THE ENGINE MANUAL. EMERGENCY DIESEL GENERATORS | | GO2, GO3, AND GO4 ARE FULLY OPERABLE IF NEEDED AND ARE NOT AFFECTED. | | GO2 CAN SUPPLY ELECTRICAL POWER TO BOTH UNITS' 'A' TRAIN SAFETY BUSSES AT | | THE SAME TIME. BY HAVING THE FUEL INJECTORS SPRING LOADED, THE FAILURE OF | | ONE INJECTOR DOES NOT DISABLE THE OTHER INJECTORS. | | | | THE NRC RESIDENT INSPECTOR WAS NOTIFIED OF THIS EVENT BY THE LICENSEE. | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |OTHER NUCLEAR MATERIAL | |EVENT NUMBER: 33685 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |LICENSEE: UNITED STATES AIR FORCE |NOTIFICATION DATE: 02/10/98 | | CITY: SAN ANTONIO REGION: 4 |NOTIFICATION TIME: 09:16 [ET]| | COUNTY: STATE: TX |EVENT DATE: 01/29/98 | |LICENSE#: TX-02682-00/1 AGREEMENT: Y |EVENT TIME: 18:00[CST]| | DOCKET: |LAST UPDATE DATE: 02/10/98 | | +-----------------------------+ | |PERSON ORGANIZATION| | |DALE POWERS RDO | | |DON COOL (NMSS) EO | +------------------------------------------------+ | |NRC NOTIFIED BY: MAJ. SWENSON | | |HQ OPS OFFICER: JOHN MacKINNON | | +------------------------------------------------+ | |EMERGENCY CLASS: NOT APPLICABLE | | |10 CFR SECTION: | | |BAB2 20.2201(a)(1)(ii) LOST/STOLEN LNM>10X | | | | | | | | | | | | | | +------------------------------------------------+-----------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | RADIOACTIVE WASTE WAS LOST AND LATER FOUND AT LACKLAND AIR FORCE BASE. | | | | THE UNITED STATES AIR FORCE RADIOISOTOPE COMMITTEE LOCATED AT BOLLING AIR | | FORCE BASE, WASHINGTON, D.C., REPORTED THIS EVENT FOR WILFORD HALL MEDICAL | | CENTER LOCATED AT LACKLAND AIR FORCE BASE, SAN ANTONIO, TX. | | | | A BAG OF RADIOACTIVE WASTE IN A CONTAINER LABELLED "RADIOACTIVE WASTE" | | (LOCATED IN A LABORATORY) AT THE WILFORD HALL MEDICAL CENTER AT LACKLAND | | AIR FORCE BASE WAS ACCIDENTALLY DISPOSED OF BUT WAS LATER RECOVERED. | | A NEW EMPLOYEE WHO WAS GIVEN THE NEWCOMERS BRIEFING BY HOUSEKEEPING BUT | | HAD NOT BEEN GIVEN AN ALARA BRIEFING BY A PHYSICIST, TOOK THE WASTE OUT | | OF THE LABELLED CONTAINER AND DISPOSED OF IT AS TRASH ON 01/29/98. THE | | RADIOACTIVE WASTE WAS ON ITS WAY TO AN INCINERATOR LOCATED NEAR HOUSTON | | WHEN IT WAS RETRIEVED ON 02/02/98. THE WASTE BAG CONTAINED 90 TO 100 | | MICROCURIES OF IODINE-125 AND 20 MICROCURIES OF COBALT-57. THE LICENSE | | NUMBER IS TX-02682-00/11 AFP. | | | | (REFER TO THE HOO LOG BOOK FOR CONTACT TELEPHONE NUMBERS.) | | | | THE NRC OPERATIONS OFFICER NOTIFIED OTHER FEDERAL AGENCIES (FEMA, DOE, DOT, | | HHS, EPA, AND USDA) BY FACSIMILE. | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |FUEL CYCLE FACILITY | |EVENT NUMBER: 33686 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: PORTSMOUTH GASEOUS DIFFUSION PLANT |NOTIFICATION DATE: 02/10/98 | | RXTYPE: URANIUM ENRICHMENT FACILITY |NOTIFICATION TIME: 12:05 [ET]| |COMMENTS: 2 DEMOCRACY CENTER |EVENT DATE: 02/09/98 | | 6903 ROCKLEDGE DRIVE |EVENT TIME: 12:10[EST]| | BETHESDA, MD 20817 (301)564-3200 |LAST UPDATE DATE: 02/10/98 | | CITY: PIKETON REGION: 3 +-----------------------------+ | COUNTY: PIKE STATE: OH |PERSON ORGANIZATION| |LICENSE#: GDP-2 AGREEMENT: N |THOMAS KOZAK RDO | | DOCKET: 0707002 |DON COOL, NMSS EO | +------------------------------------------------+STUART RUBIN, AEOD IRD | |NRC NOTIFIED BY: CRABTREE | | |HQ OPS OFFICER: CHAUNCEY GOULD | | +------------------------------------------------+ | |EMERGENCY CLASS: NOT APPLICABLE | | |10 CFR SECTION: | | |NBNL RESPONSE-BULLETIN | | | | | | | | | | | | | | +------------------------------------------------+-----------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | LOSS OF ONE DOUBLE CONTINGENCY MATRIX CONTROL (SPACING) - BULLETIN 91-01 | | RESPONSE (24-HOUR REPORT). | | | | PLANT PERSONNEL DISCOVERED THAT A NUCLEAR CRITICALITY SAFETY APPROVAL | | (NCSA) REQUIREMENT WAS NOT BEING MAINTAINED IN A BOUNDARY CONTROL STATION | | (BCS) OF THE X-333 BUILDING. NCSA PLANT 018.A01, PART 'B,' REQUIREMENT #5, | | STATES THAT DRY ACTIVE WASTE (DAW) CONTAINERS WITH A CAPACITY OF 55 GALLONS | | OR LESS SHALL BE SPACED AT LEAST 2 FEET EDGE-TO-EDGE FROM URANIUM BEARING | | EQUIPMENT OR MATERIAL. A 55 GALLON DAW CONTAINER WAS DISCOVERED LESS THAN | | THE 2-FOOT MINIMUM SPACING FROM A CONTAMINATED LAUNDRY BAG. THIS LOSS OF | | SPACING CONSTITUTES A LOSS OF ONE CONTROL IN THE DOUBLE CONTINGENCY MATRIX | | FOR CONTINGENCY EVENT B.4.1. CONTROL 'B' (NO VISIBLE URANIUM, AND DRUMS | | NOT STACKED) WAS MAINTAINED THROUGHOUT THIS EVENT. | | | | AS A RESULT OF THIS DISCOVERY, AN IMMEDIATE INVESTIGATION OF ALL BCSs | | IN THE X-333 FACILITY WAS CONDUCTED. THIS RESULTED IN THE DISCOVERY OF | | 16 ADDITIONAL NON-COMPLIANCES OF CONTROL 'A.' EACH DEFICIENCY (LOSS OF | | CONTROL 'A') WAS IMMEDIATELY CORRECTED. A WALKDOWN OF ALL REMAINING | | BUILDINGS FOR SIMILAR OCCURRENCES WAS PERFORMED, BUT NO OTHER DEFICIENCIES | | WERE FOUND. | | | | THERE WAS NO LOSS OF HAZARDOUS OR RADIOACTIVE MATERIAL OR RADIOACTIVE OR | | RADIOLOGICAL CONTAMINATION EXPOSURE AS A RESULT OF THIS EVENT. CRITICALITY | | WAS NOT POSSIBLE DUE TO MAINTAINING MASS CONTROL. LOSS OF SPACING CONTROL | | AND MASS CONTROL COULD LEAD TO CRITICALITY. CONTROL 'A' SPACING WAS LOST, | | AND CONTROL 'B' MASS WAS MAINTAINED. DAW CONTAINERS AND LAUNDRY HAVE | | REQUIREMENTS FOR NO VISIBLE URANIUM. THE FACILITY HAS A 3% ENRICHMENT | | RESTRICTION, AND THE FORM OF URANIUM IS UO2F2. | | | | PORTSMOUTH NOTIFIED THE NRC RESIDENT INSPECTOR AND PLANS TO NOTIFY THE SITE | | DEPARTMENT OF ENERGY REPRESENTATIVE. | | | | * * * UPDATE AT 2343 ON 02/10/98 FROM BARCH RECEIVED BY TROCINE * * * | | | | AT 1415, WHILE CONTINUING AN NCS WALKDOWN OF SPACING VIOLATIONS CONCERNING | | DAW AND CONTAMINATED LAUNDRY, PLANT PERSONNEL DISCOVERED AN ADDITIONAL BCS | | WITH A SPACING NON-COMPLIANCE. THE NCSA REQUIREMENT WAS NOT BEING | | MAINTAINED IN THE BCS OF THE X-333 BUILDING. NCSA PLANT 018.A01, PART 'B,' | | REQUIREMENT #5, STATES THAT DAW CONTAINERS WITH A CAPACITY OF 55 GALLONS OR | | LESS SHALL BE SPACED AT LEAST 2 FEET EDGE-TO-EDGE FROM URANIUM BEARING | | EQUIPMENT OR MATERIAL. A 55-GALLON DAW CONTAINER WAS DISCOVERED LESS THAN | | THE 2-FOOT MINIMUM SPACING FROM A CONTAMINATED LAUNDRY BAG. THIS LOSS OF | | SPACING CONSTITUTES A LOSS OF ONE CONTROL IN THE DOUBLE CONTINGENCY MATRIX | | FOR CONTINGENCY EVENT B.4.1. CONTROL 'B' (NO VISIBLE URANIUM, AND DRUMS | | NOT STACKED) WAS MAINTAINED THROUGHOUT THIS EVENT. THE DEFICIENCY (LOSS OF | | CONTROL 'A') WAS IMMEDIATELY CORRECTED. THERE WAS NO LOSS OF HAZARDOUS OR | | RADIOACTIVE MATERIAL OR RADIOACTIVE OR RADIOLOGICAL CONTAMINATION EXPOSURES | | AS A RESULT OF THIS EVENT. | | | | PORTSMOUTH NOTIFIED THE NRC RESIDENT INSPECTOR. THE NRC OPERATIONS OFFICER | | NOTIFIED THE R3D0 (KOZAK), NMSS EO (HAUGHNEY), AND AEOD IRD (RUBIN). | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 33687 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: MILLSTONE REGION: 1 |NOTIFICATION DATE: 02/10/98 | |UNIT: [ ] [ ] [3] STATE: CT |NOTIFICATION TIME: 12:59 [ET]| |RX TYPE: [1] GE-3,[2] CE,[3] W-4-LP |EVENT DATE: 02/10/98 | +------------------------------------------------+EVENT TIME: 11:50[EST]| |NRC NOTIFIED BY: BODSKY |LAST UPDATE DATE: 02/10/98 | |HQ OPS OFFICER: CHAUNCEY GOULD +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |MOHAMED SHANBAKY 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 A HYDRAZINE | | DISCHARGE. | | | | ON 02/01/98, UNIT 3 DETECTED A LEAK FROM THE AUXILIARY STEAM SYSTEM WHICH | | CONTAINED 121 PPB OF HYDRAZINE. THE LICENSEE HAD TO REPORT THIS DISCHARGE | | TO THE STATE SINCE IT INVOLVES USING A NON-PERMITTED PATH FOR THE HYDRAZINE | | DISCHARGE. | | | | THE NRC RESIDENT INSPECTOR WAS NOTIFIED BY THE LICENSEE. THE NRC | | OPERATIONS OFFICER NOTIFIED OTHER FEDERAL AGENCIES BY FACSIMILE. | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |FUEL CYCLE FACILITY | |EVENT NUMBER: 33688 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: PORTSMOUTH GASEOUS DIFFUSION PLANT |NOTIFICATION DATE: 02/10/98 | | RXTYPE: URANIUM ENRICHMENT FACILITY |NOTIFICATION TIME: 15:18 [ET]| |COMMENTS: 2 DEMOCRACY CENTER |EVENT DATE: 02/09/98 | | 6903 ROCKLEDGE DRIVE |EVENT TIME: 15:35[EST]| | BETHESDA, MD 20817 (301)564-3200 |LAST UPDATE DATE: 02/10/98 | | CITY: PIKETON REGION: 3 +-----------------------------+ | COUNTY: PIKE STATE: OH |PERSON ORGANIZATION| |LICENSE#: GDP-2 AGREEMENT: N |THOMAS KOZAK RDO | | DOCKET: 0707002 |DON COOL, NMSS EO | +------------------------------------------------+STUART RUBIN IRD | |NRC NOTIFIED BY: SPAETH | | |HQ OPS OFFICER: CHAUNCEY GOULD | | +------------------------------------------------+ | |EMERGENCY CLASS: NOT APPLICABLE | | |10 CFR SECTION: | | |NBNL RESPONSE-BULLETIN | | | | | | | | | | | | | | +------------------------------------------------+-----------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | BULLETIN 91-01 RESPONSE (24-HOUR REPORT). | | | | WHILE REVIEWING AN OPERATIONAL DISCREPANCY FOR THE MICROFILTRATION PROCESS, | | PLANT PERSONNEL NOTED THAT AN AIR LINE IN THE SYSTEM DID NOT APPEAR TO BE | | ADEQUATELY ADDRESSED BY THE NUCLEAR CRITICALITY SAFETY APPROVAL (NCSA) OR | | THE OPERATING PROCEDURE FOR THE OPERATION. THE AIR LINE IN QUESTION | | ALLOWED ONE NCS CONTROL TO BE BYPASSED, THAT BEING A CLOSED "FILTER PRESS | | FEED INLET VALVE." THIS AIR LINE IN THE SYSTEM WAS NOT DESCRIBED IN AN | | NCSA/NCSE. FAILURE OF THE FILTER PRESS INLET FEED VALVE IS ANALYZED IN | | NCSE-0705_015.A08, PART B; CONTINGENCY ANALYSIS, SECTION B.1.1. HOWEVER, | | CONTROLS WERE NOT ESTABLISHED ON THE POTENTIAL BYPASS OF THIS VALVE. THE | | TOTAL MASS OF U-235 IN THE SYSTEM WAS CALCULATED TO BE 32 GRAMS, WHICH IS | | LESS THAN THE 350 GRAMS MAXIMUM ALLOWED FOR THE SYSTEM. UPON DISCOVERY OF | | THIS DISCREPANCY, OPERATIONS PERSONNEL IMMEDIATELY SECURED THE AIR LINE | | THUS REESTABLISHING THE CONTROL. A SECOND CONTROL, "THE FILTER PRESS BLANK | | PLATE," REMAINED IN PLACE THROUGHOUT THE EVENT. OPERATIONS PERSONNEL SHUT | | DOWN THE MICROFILTRATION OPERATION AND PLACED AN "ADMINISTRATION HOLD" ON | | USE OF THE MICROFILTRATION AND FILTER PRESS PROCEDURES. THERE WAS NO LOSS | | OF HAZARDOUS OR RADIOACTIVE MATERIAL OR RADIOACTIVE OR RADIOLOGICAL | | CONTAMINATION EXPOSURE AS A RESULT OF THIS EVENT. | | | | THIS EVENT WAS THE RESULT OF FAILURE TO ESTABLISH AND MAINTAIN CONTROLS IN | | ACCORDANCE WITH THE DOUBLE CONTINGENCY PRINCIPLE. THE FILTER PRESS BACK | | PLATE PROTECTED THE UNSAFE GEOMETRY, AND THE CONCENTRATION OF SOLUTION | | WOULD HAVE TO BE HIGHER FOR CRITICALITY TO OCCUR. BACKFLOW WAS PREVENTED | | BY THE FILTER PRESS BLANK PLATE. THE HIGHEST CONCENTRATION AND ASSAY OF | | SAMPLES TAKEN WAS APPROXIMATELY 80 GALLONS OF 231 PPM U SOLUTION AT 2.94% | | ASSAY. THE FEED BLOCK VALVE WHICH WAS REQUIRED TO BE CLOSED AND REMAIN | | CLOSED WAS DEFEATED BY A BY-PASS ALLOWED BY AN AIR LINE. THE CORRECTIVE | | ACTION WAS TO SHUT THE SYSTEM DOWN AND SECURE THE AIR LINE. PORTSMOUTH IS | | INVESTIGATING THE PROBLEM. | | | | PORTSMOUTH PERSONNEL NOTIFIED THE NRC RESIDENT INSPECTOR AND PLANS TO | | NOTIFY THE SITE DEPARTMENT OF ENERGY REPRESENTATIVE. | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 33689 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: QUAD CITIES REGION: 3 |NOTIFICATION DATE: 02/10/98 | |UNIT: [1] [2] [ ] STATE: IL |NOTIFICATION TIME: 18:08 [ET]| |RX TYPE: [1] GE-3,[2] GE-3 |EVENT DATE: 02/10/98 | +------------------------------------------------+EVENT TIME: 15:32[CST]| |NRC NOTIFIED BY: MACLENNAN |LAST UPDATE DATE: 02/10/98 | |HQ OPS OFFICER: CHAUNCEY GOULD +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |THOMAS KOZAK 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 | +-----+----------+-------+--------+-----------------+--------+-----------------+ | 1 | N N 0 COLD SHUTDOWN | 0 COLD SHUTDOWN | | 2 | N N 0 COLD SHUTDOWN | 0 COLD SHUTDOWN | | | | | +-----+---------------------------------------------+--------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | STANDBY LIQUID CONTROL (SBLC) SYSTEM FOR BOTH UNITS INOPERABLE DUE TO A | | MISSED SURVEILLANCE. | | | | THE STANDBY LIQUID CONTROL SYSTEM WAS DECLARED INOPERABLE ON BOTH UNITS | | DUE TO A MISSED TECHNICAL SPECIFICATION SURVEILLANCE REQUIREMENT WHICH | | REQUIRES THE LICENSEE TO VERIFY OPERABILITY OF THE SBLC SUCTION LINE | | HEAT TRACING CIRCUIT EVERY 24 HOURS. THIS IS DONE BY DETERMINING THE | | TEMPERATURE OF THE PUMP SUCTION PIPING TO BE ò 83øF. | | | | THIS REQUIREMENT IS NORMALLY ASSUMED TO BE SATISFIED BY VERIFYING THE | | SBLC TANK HI/LO TEMPERATURE ALARM BEING CLEARED. IT HAS BEEN DETERMINED | | THAT THE TEMPERATURE SWITCHES FOR ACTUATING THE ALARM ARE ACTUALLY SET | | AT A VALUE < 83øF. THEREFORE, IT COULD NOT DETERMINED IF TECHNICAL | | SPECIFICATION REQUIREMENTS ARE BEING SATISFIED. THE LICENSEE IS CURRENTLY | | CALIBRATING THESE SWITCHES TO THE PROPER SETPOINTS. THE SBLC SYSTEM IS | | NOT REQUIRED TO BE OPERABLE WHILE THE UNITS ARE IN MODE 4. IT CAN BE | | CONCLUDED, HOWEVER, THAT SURVEILLANCE REQUIREMENTS WERE NOT BEING MET WHILE | | THE UNITS WERE IN MODES WHICH REQUIRE THE SBLC TO BE OPERABLE. SINCE THE | | LAST CALIBRATION DATE, 05/97, UNIT 1 WAS OPERATING AT THAT TIME AND UNIT 2 | | WAS OPERATING SUBSEQUENT TO THAT DATE FOLLOWING ITS LAST REFUELING OUTAGE. | | | | THE NRC RESIDENT INSPECTOR WAS NOTIFIED BY THE LICENSEE. | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 33690 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: OCONEE REGION: 2 |NOTIFICATION DATE: 02/10/98 | |UNIT: [ ] [2] [ ] STATE: SC |NOTIFICATION TIME: 20:48 [ET]| |RX TYPE: [1] B&W-L-LP,[2] B&W-L-LP,[3] B&W-L-LP |EVENT DATE: 02/10/98 | +------------------------------------------------+EVENT TIME: 17:00[EST]| |NRC NOTIFIED BY: NORTH |LAST UPDATE DATE: 02/10/98 | |HQ OPS OFFICER: CHAUNCEY GOULD +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |ROBERT HAAG 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 | +-----+----------+-------+--------+-----------------+--------+-----------------+ | | | | | 2 | N Y 100 POWER OPERATION | 100 POWER OPERATION | | | | | +-----+---------------------------------------------+--------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | THE LICENSEE DISCOVERED AN OPEN PATHWAY FROM CONTAINMENT TO THE | | ENVIRONMENT. | | | | THE OPEN PATHWAY FROM CONTAINMENT TO THE ENVIRONMENT WOULD HAVE BEEN | | ISOLATED BY AN ENGINEERED SAFEGUARDS SIGNAL WHICH WOULD HAVE OCCURRED AT | | 3 PSIG REACTOR BUILDING PRESSURE OR 1,600 PSIG RCS PRESSURE. THIS PATHWAY | | EXISTED FROM 1100 TO 1400 ON 02/10/98 DURING A SETUP FOR TESTING OF THE | | CONTAINMENT HYDROGEN RECOMBINER SYSTEM. MAINTENANCE PERSONNEL STARTED TO | | HOOK UP THE HYDROGEN RECOMBINER PRIOR TO ISOLATING THE VALVES. THIS | | RESULTED IN THE OPEN PATH. DURING THIS TIME, IT DOES NOT APPEAR THAT AN | | UNMONITORED RELEASE OCCURRED BASED ON AN INCREASE IN REACTOR BUILDING | | PRESSURE (REACTOR BUILDING PRESSURE WAS LESS THAN ATMOSPHERIC PRESSURE) | | WHEN THE BLIND FLANGES WERE REMOVED TO CONNECT THE HYDROGEN RECOMBINER | | SKID. | | | | THE HYDROGEN RECOMBINER IS CONNECTED VIA FLANGES LOCATED OUTSIDE THE | | REACTOR BUILDING. THE PIPING TO THIS FLANGE EXITS THE REACTOR BUILDING | | THROUGH TWO VALVES IN SERIES, AND EACH VALVE RECEIVES AN ENGINEERED | | SAFEGUARDS SIGNAL. THE RETURN PIPING TO THE REACTOR BUILDING ALSO HAS TWO | | VALVES IN SERIES WHICH ALSO RECEIVE AN ENGINEERED SAFEGUARDS SIGNAL. THESE | | CONTAINMENT ISOLATION VALVES AND THE ASSOCIATED ENGINEERED SAFEGUARDS | | SIGNALS REMAINED OPERABLE THROUGHOUT THE EVENT. THE EVENT IS STILL BEING | | INVESTIGATED. | | | | THE NRC RESIDENT INSPECTOR WAS INFORMED BY THE LICENSEE. | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |FUEL CYCLE FACILITY | |EVENT NUMBER: 33691 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: PORTSMOUTH GASEOUS DIFFUSION PLANT |NOTIFICATION DATE: 02/10/98 | | RXTYPE: URANIUM ENRICHMENT FACILITY |NOTIFICATION TIME: 23:43 [ET]| |COMMENTS: 2 DEMOCRACY CENTER |EVENT DATE: 02/10/98 | | 6903 ROCKLEDGE DRIVE |EVENT TIME: 11:00[EST]| | BETHESDA, MD 20817 (301)564-3200 |LAST UPDATE DATE: 02/10/98 | | CITY: PIKETON REGION: 3 +-----------------------------+ | COUNTY: PIKE STATE: OH |PERSON ORGANIZATION| |LICENSE#: GDP-2 AGREEMENT: N |THOMAS KOZAK RDO | | DOCKET: 0707002 |CHARLEY HAUGHNEY EO | +------------------------------------------------+STUART RUBIN, AEOD IRD | |NRC NOTIFIED BY: GREG BARCH | | |HQ OPS OFFICER: LEIGH TROCINE | | +------------------------------------------------+ | |EMERGENCY CLASS: NOT APPLICABLE | | |10 CFR SECTION: | | |NBNL RESPONSE-BULLETIN | | | | | | | | | | | | | | +------------------------------------------------+-----------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | LOSS OF ONE DOUBLE CONTINGENCY MATRIX CONTROL (SPACING) - BULLETIN 91-01 | | RESPONSE (24-HOUR REPORT) | | | | AT 1100, BUILDING PERSONNEL DISCOVERED THAT A NUCLEAR CRITICALITY SAFETY | | APPROVAL (NCSA) REQUIREMENT WAS NOT BEING MAINTAINED IN THE X-342 FEED AND | | FLUORINE GENERATION FACILITY. NCSA PLANT 045.A01, PART 'B,' REQUIREMENT | | #5, STATES THAT CONTAINERS SHALL BE SPACED TWO FEET EDGE-TO-EDGE FROM EACH | | OTHER AND FROM ALL OTHER URANIUM BEARING EQUIPMENT. IT WAS DISCOVERED THAT | | TWO 1-GALLON BUCKETS WERE SPACED 23 INCHES APART. THIS LOSS OF SPACING | | CONSTITUTED A LOSS OF ONE CONTROL IN THE DOUBLE CONTINGENCY MATRIX FOR | | CONTINGENCY EVENT A/B.7.1, CONTROL 'A.' CONTROL 'B' (ENRICHMENT AND | | VERIFICATION OF CORRECT BUCKET USE) WAS MAINTAINED THROUGHOUT THIS EVENT. | | THERE WAS NO LOSS OF HAZARDOUS OR RADIOACTIVE MATERIAL OR RADIOLOGICAL | | CONTAMINATION EXPOSURE AS A RESULT OF THIS EVENT. | | | | PORTSMOUTH NOTIFIED THE NRC RESIDENT INSPECTOR. | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 33692 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: CRYSTAL RIVER REGION: 2 |NOTIFICATION DATE: 02/11/98 | |UNIT: [3] [ ] [ ] STATE: FL |NOTIFICATION TIME: 01:51 [ET]| |RX TYPE: [3] B&W-L-LP |EVENT DATE: 02/11/98 | +------------------------------------------------+EVENT TIME: 00:37[EST]| |NRC NOTIFIED BY: LEN CLEWETT |LAST UPDATE DATE: 02/11/98 | |HQ OPS OFFICER: LEIGH TROCINE +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |ROBERT HAAG 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 | A/R Y 100 POWER OPERATION | 0 HOT STANDBY | | | | | | | | | +-----+---------------------------------------------+--------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | AUTOMATIC TURBINE TRIP/REACTOR TRIP DUE TO THE LOSS OF INTEGRATED CONTROL | | SYSTEM POWER. | | | | A LOSS OF INTEGRATED CONTROL SYSTEM POWER (FOR UNKNOWN REASONS) CAUSED BOTH | | MAIN FEEDWATER PUMPS TO RUN BACK TO MINIMUM SPEED. FEEDWATER FLOW LESS | | THAN 17% WITH REACTOR POWER GREATER THAN 45% CAUSED THE ATWS (ANTICIPATED | | TRANSIENT WITHOUT SCRAM) MITIGATING SYSTEM ACTUATION CIRCUITRY (AMSAC) TO | | ACTUATE, AND AMSAC IN TURN INITIATED A TURBINE TRIP AND AN EMERGENCY | | FEEDWATER ACTUATION. THE TURBINE TRIP CAUSED AN AUTOMATIC REACTOR TRIP | | FROM 100% POWER (BECAUSE THE REACTOR WAS AT GREATER THAN 45% POWER). ALL | | CONTROL RODS FULLY INSERTED. SECONDARY SAFETY RELIEF VALVES OPENED AND | | RECLOSED. ALL SYSTEMS FUNCTIONED AS REQUIRED, AND THERE WAS NOTHING THAT | | WAS UNUSUAL OR NOT UNDERSTOOD. | | | | THE REACTOR IS CURRENTLY STABLE IN MODE 3. PRESSURIZER HEATERS AND SPRAYS | | AND NORMAL CHARGING AND MAKEUP ARE BEING USED FOR PRIMARY PRESSURE AND | | INVENTORY CONTROL. EMERGENCY FEEDWATER IS BEING USED TO SUPPLY WATER TO | | THE STEAM GENERATORS, AND SECONDARY STEAM IS BEING DUMPED TO THE ATMOSPHERE | | VIA THE ATMOSPHERIC DUMP VALVES. (THE TURBINE BYPASS VALVES THAT GO TO THE | | CONDENSER FAIL CLOSED ON A LOSS OF INTEGRATED CONTROL SYSTEM POWER, AND | | THEY CANNOT BE CONTROLLED IN AUTOMATIC DUE TO THIS LOSS.) | | | | THE LICENSEE STATED THAT THERE WAS A SMALL PRE-EXISTING STEAM GENERATOR | | TUBE LEAK (ESTIMATED TO BE APPROXIMATELY 13 GALLONS PER DAY). THE LICENSEE | | ALSO STATED THAT PRE-EXISTING PRIMARY ACTIVITY WAS WELL BELOW ANY LIMITS. | | | | THE CAUSE FOR THE LOSS OF INTEGRATED CONTROL SYSTEM POWER IS CURRENTLY | | UNDER INVESTIGATION. THERE WERE NO MAINTENANCE OR SURVEILLANCE ACTIVITIES | | ONGOING AT THE TIME OF THE EVENT. A RESTART DATE HAS NOT YET BEEN | | DETERMINED. | | | | THE LICENSEE NOTIFIED THE NRC RESIDENT INSPECTOR AND PLANS TO MAKE A PRESS | | RELEASE. | +------------------------------------------------------------------------------+