U.S. Nuclear Regulatory Commission Operations Center Event Reports For 06/22/98 - 06/23/98 ** EVENT NUMBERS ** 34113 34420 34421 34422 34423 34424 34425 34426 +----------------------------------+ +-----------------------+ |GENERAL INFORMATION or OTHER | |EVENT NUMBER: 34113 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |LICENSEE: WYLE LABORATORIES, INC |NOTIFICATION DATE: 04/21/98 | | CITY: REGION: 0 |NOTIFICATION TIME: 15:36 [ET]| | COUNTY: STATE: |EVENT DATE: 04/21/98 | |LICENSE#: AGREEMENT: |EVENT TIME: 12:00[EDT]| | DOCKET: |LAST UPDATE DATE: 06/22/98 | | +-----------------------------+ | |PERSON ORGANIZATION| | |ELMO COLLINS RDO | | | | +------------------------------------------------+VERN HODGE NRR | |NRC NOTIFIED BY: EDWARD W. SMITH | | |HQ OPS OFFICER: DICK JOLLIFFE | | +------------------------------------------------+ | |EMERGENCY CLASS: NOT APPLICABLE | | |10 CFR SECTION: | | |CCCC 21.21 UNSPECIFIED PARAGRAPH | | | | | | | | | | | | | | +------------------------------------------------+-----------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | - POTENTIAL 10CFR PART 21 REPORT - | | | | ON 04/07/98, WYLE LABORATORIES, INC AND SIEMENS CORPORATION PERSONNEL | | INSTALLED AN INTERLOCK KIT TO UPGRADE WYLE/SIEMENS SAFETY RELATED 4 KV, | | 350 MVA, 1200 AMP CIRCUIT BREAKERS AT ARKANSAS UNITS 1 AND 2. THIS UPGRADE | | WAS BEING INSTALLED DUE TO CONDITIONS OBSERVED ON SIMILAR SIEMENS CIRCUIT | | BREAKERS IN NON-SAFETY RELATED APPLICATIONS AT SALEM/HOPE CREEK. | | | | HOWEVER, THE SIEMENS TECHNICIAN DID NOT INSTALL THE KIT INTO THE CIRCUIT | | BREAKER PER THE APPROPRIATE SIEMENS DRAWING. THE IDENTIFIED CIRCUIT | | BREAKER, ALONG WITH NINE ADDITIONAL CIRCUIT BREAKERS WILL BE SHIPPED FROM | | ARKANSAS TO THE SIEMENS MANUFACTURING FACILITY AT WENDELL, NORTH CAROLINA | | WHERE THEY WILL UNDERGO AN APPROVED EVALUATION PROCEDURE. | | | | THIS REPORT IS CLASSIFIED AS A POTENTIAL 10CFR PART 21 REPORT. | | | | ***UPDATE ON 06/22/98 @ 1800ET BY ED W. SMITH TAKEN BY MACKINNON*** | | | | THE FOLLOWING INFORMATION COMES FROM A FACSIMILE SENT BY WYLE LABS: | | | | "THE ABOVE EQUIPMENT WAS SUPPLIED TO ENTERGY OPERATIONS INC. (EOI), | | RUSSELLVILLE, AR UNDER EOI PO NO. 962027. NOA NO. 8 INCLUDED TWO ANOMALIES | | THAT ARE REPRINTED AND RESOLVED AS FOLLOWS: | | | | "ANOMALY NO. 1: THE CIRCUIT BREAKER DID NOT LATCH CLOSED IN THE TEST | | POSITION WITH THE GE TEST FLAG INSTALLED. AS A RESULT, THE MOC DID NOT | | MAINTAIN A CHANGE OF STATE CONDITION. | | | | "RESOLUTION NO. 1: THE SIEMENS VACUUM CIRCUIT BREAKERS SHOULD UTILIZE A | | SIEMENS TEST FLAG. HOWEVER, THE SIEMENS FLAG DID NOT PROVIDE WITH THE | | BREAKERS TO EOI. SUBSEQUENT TESTING AT SIEMENS USING THE GE TEST FLAG ALSO | | RESULTED IN FAILURE OF THE BREAKERS TO LATCH CLOSED. IN ADDITION, SIEMENS | | AND WYLE HAD NOT SUPPLIED EOI WITH ADEQUATE INSTALLATION AND TEST | | PROCEDURES THAT MAY HAVE PREVENTED THIS OCCURRENCE. NEW MANUALS ARE IN | | PREPARATION, WHICH WILL PROVIDE SATISFACTORY INSTALLATION AND TEST | | PROCEDURES. | | | | "THE SIEMENS TEST FLAG HAS BEEN TESTED ON EOI 5 KV AND 7 KV BREAKERS AT | | SIEMENS AND PROVEN TO OPERATE ADEQUATELY. THE CONCLUSIONS ARE THAT: (1) | | THE UTILITIES SHOULD NOT ATTEMPT TO USE THE GE TEST FLAG WITH THE SIEMENS | | REPLACEMENT VACUUM BREAKERS AND (2) SIEMENS/WYLE WILL PROVIDE NEW | | PROCEDURES FOR THE INSTALLATION AND TEST OF THE BREAKERS WITH SIEMENS' TEST | | FLAG. | | | | "ANOMALY NO. 2: THE STORED ENERGY MECHANISM DID NOT DISCHARGE WHEN THE | | BREAKER WAS WITHDRAWN FROM THE CUBICAL. | | | | "RESOLUTION NO. 2: PROVISIONS FOR ADEQUATE ADJUSTMENTS OF THE POSITIVE | | INTERLOCK SWITCH ROLLER HAVE BEEN ADDED TO THE DESIGN WHICH RESOLVES THIS | | ANOMALY" | | | | R4DO (BILL JONES) NOTIFIED AND A FAX SENT TO NRR VERN HODGE. | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 34420 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: NINE MILE POINT REGION: 1 |NOTIFICATION DATE: 06/22/98 | |UNIT: [1] [ ] [ ] STATE: NY |NOTIFICATION TIME: 09:34 [ET]| |RX TYPE: [1] GE-2,[2] GE-5 |EVENT DATE: 06/22/98 | +------------------------------------------------+EVENT TIME: 08:40[EDT]| |NRC NOTIFIED BY: JIM KRONENBITTER |LAST UPDATE DATE: 06/22/98 | |HQ OPS OFFICER: FANGIE JONES +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |JIM TRAPP RDO | |ASHU 50.72(b)(1)(i)(A) PLANT S/D REQD BY TS | | | | | | | | | | | | | | +-----+----------+-------+--------+--------------+--+--------+-----------------+ |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 +------------------------------------------------------------------------------+ | TECHNICAL SPECIFICATION REQUIRED SHUTDOWN DUE TO INOPERABLE ADS CHANNEL 11 | | | | DURING A REVIEW OF A PROBLEM IDENTIFICATION FORM, THE LICENSEE DETERMINED | | THAT CHANNEL 11 OF THE AUTOMATIC DEPRESSURIZATION SYSTEM (ADS) WAS | | INOPERABLE. THE LIMITING CONDITION FOR OPERATION FOR TECHNICAL | | SPECIFICATION 3.1.5.B REQUIRES PLANT SHUTDOWN TO 100 PSIG OR LESS AND | | SATURATED TEMPERATURE OR LESS WITHIN 10 HOURS. THE CAUSE OF THE | | INOPERABILITY IS THE CHANNEL 11 ADS RESET PUSH BUTTON IS STICKING. WORK IS | | ONGOING TO REPAIR OR REPLACE THE PUSH BUTTON AND THE PLANT IS SHUTTING DOWN | | IN THE MEAN TIME. | | | | THE LICENSEE PLANS TO INFORM THE NRC RESIDENT INSPECTOR. | | | | ***UPDATE AT 1645ET ON 06/22/98 BY WEBER TAKEN BY MACKINNON*** | | | | ADS CHANNEL 11 PUSH BUTTON WAS REPLACED AND POST MAINTENANCE TESTING OF THE | | PUSH BUTTON WAS COMPLETED SATISFACTORILY AT WHICH TIME TECHNICAL | | SPECIFICATION 3.1.5.B WAS EXITED. REACTOR POWER HAD BEEN REDUCED TO 73.8%, | | BUT HAS BEEN RESTORED TO 100%. | | | | THE NRC RESIDENT INSPECTOR WAS NOTIFIED OF THIS EVENT UPDATE BY THE | | LICENSEE. NRC R1DO (JIM TRAPP) NOTIFIED BY THE NRC OPERATIONS OFFICER. | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |GENERAL INFORMATION or OTHER | |EVENT NUMBER: 34421 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |LICENSEE: STATE OF TEXAS |NOTIFICATION DATE: 06/22/98 | | CITY: HOUSTON REGION: 4 |NOTIFICATION TIME: 11:12 [ET]| | COUNTY: STATE: TX |EVENT DATE: 06/19/98 | |LICENSE#: AGREEMENT: Y |EVENT TIME: 12:00[CDT]| | DOCKET: |LAST UPDATE DATE: 06/22/98 | | +-----------------------------+ | |PERSON ORGANIZATION| | |BILL JONES RDO | | |DON COOL/NMSS EO | +------------------------------------------------+EPA, HHS, DOE, USDA FAX | |NRC NOTIFIED BY: BRAD CASKEY |FEMA, DOT (NRC) FAX | |HQ OPS OFFICER: FANGIE JONES | | +------------------------------------------------+ | |EMERGENCY CLASS: NOT APPLICABLE | | |10 CFR SECTION: | | |NAGR AGREEMENT STATE | | | | | | | | | | | | | | +------------------------------------------------+-----------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | REPORT OF A RUPTURED SOURCE AT A FABRICATION FACILITY | | | | THIS IS A PRELIMINARY NOTICE BY THE STATE OF TEXAS OF A RUPTURED SOURCE | | (IRIDIUM-192) AT JET WELD, A FABRICATION FACILITY, IN HOUSTON, TEXAS. THE | | STATE OF TEXAS WAS NOTIFIED OF THE RUPTURE ON FRIDAY, 06/19/98, AT 1600. ON | | MONDAY, 06/22/98, THEY LEARNED THAT CONTAMINATION HAD BEEN SPREAD TO THE | | OFFICE AREA AND THERE HAS BEEN SOME PERSONNEL CONTAMINATION WITH | | CONTAMINATED CLOTHES CONFISCATED. THERE HAS BEEN AN INDICATION THAT | | CONTAMINATION MAY HAVE BEEN CARRIED TO RADIOGRAPHICS SPECIALIST OF HOUSTON, | | TEXAS, THE SOURCE PROVIDER. THE TEXAS DEPARTMENT OF HEALTH, BUREAU OF | | RADIOLOGICAL CONTROL HAS SENT A TEAM TO THE SITE. THE FULL EXTENT OF THE | | PROBLEM IS UNKNOWN AT THIS TIME. | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 34422 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: HADDAM NECK REGION: 1 |NOTIFICATION DATE: 06/22/98 | |UNIT: [1] [ ] [ ] STATE: CT |NOTIFICATION TIME: 11:48 [ET]| |RX TYPE: [1] W-4-LP |EVENT DATE: 06/20/98 | +------------------------------------------------+EVENT TIME: 00:00[EDT]| |NRC NOTIFIED BY: ROBERT MORGAN |LAST UPDATE DATE: 06/22/98 | |HQ OPS OFFICER: BOB STRANSKY +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |JIM TRAPP RDO | |APRE 50.72(b)(2)(vi) OFFSITE NOTIFICATION | | | |OTHER FED AGENCIES FAX | | | | | | | | | | +-----+----------+-------+--------+--------------+--+--------+-----------------+ |UNIT |SCRAM CODE|RX CRIT|INIT PWR| INIT RX MODE |CURR PWR| CURR RX MODE | +-----+----------+-------+--------+-----------------+--------+-----------------+ | 1 | N N 0 REFUELING | 0 REFUELING | | | | | | | | | +-----+---------------------------------------------+--------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | OFFSITE NOTIFICATION REGARDING INADVERTENT RELEASE OF RADIOACTIVE LIQUID | | | | ON 6/20/98, APPROXIMATELY 800 GALLONS OF RADIOACTIVE LIQUID (TOTAL ACTIVITY | | OF 2252 ęCi, EXCLUDING TRITIUM AND NOBLE GASES) WAS INADVERTENTLY RELEASED | | TO THE CONNECTICUT RIVER FROM THE 'A' WASTE TEST TANK. A NATIONAL POLLUTION | | DISCHARGE ELIMINATION SYSTEM (NPDES) PERMIT HAD BEEN OBTAINED FOR THE | | RELEASE FROM THE 'A' TANK. THE RELEASE IS CONSIDERED TO BE INADVERTENT | | BECAUSE, AT THE TIME OF THE EVENT, THE LICENSEE WAS INTENDING TO DISCHARGE | | THE CONTENTS OF THE 'B' TANK, NOT THE 'A' TANK. THE LICENSEE REVIEWED THIS | | EVENT ON 6/22/98, AND REPORTED THAT THE EVENT WOULD HAVE MET THE CRITERION | | FOR DECLARATION OF AN UNUSUAL EVENT, BUT A RETROACTIVE UNUSUAL EVENT WAS | | NOT DECLARED IN ACCORDANCE WITH NUREG-1022 GUIDANCE. THE NRC RESIDENT | | INSPECTOR WILL BE INFORMED BY THE LICENSEE. | | | | ***UPDATE AT 1737ET ON 06/22/98 BY R MORGAN TAKEN BY MACKINNON*** | | | | THE RELEASE WAS MADE UNDER A RELEASE PERMIT AND WITHIN RELEASE | | REQUIREMENTS. IT POTENTIALLY OCCURRED AS A RESULT OF ONGOING WORK | | ACTIVITIES IN THE AREA, IN THAT A WORKER MAY HAVE INADVERTENTLY BUMPED OPEN | | A CROSS CONNECT VALVE ALLOWING THE RELEASE TO OCCUR. THE RELEASE WAS | | TERMINATED UPON DISCOVERY. FURTHER PLANNED RELEASES FROM TEST TANKS HAVE | | BEEN DISCONTINUED UNTIL MANAGEMENT DETERMINES THAT THE SITUATION HAS BEEN | | CORRECTED. THIS RELEASE OCCURRED OVER A TIME PERIOD OF APPROXIMATELY 95 | | MINUTES. | | | | THE NRC RESIDENT INSPECTOR WAS INFORMED OF THIS EVENT UPDATE BY THE | | LICENSEE. NRC R1DO (JIM TRAPP) NOTIFIED BY THE NRC OPERATIONS OFFICER. | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |FUEL CYCLE FACILITY | |EVENT NUMBER: 34423 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: PORTSMOUTH GASEOUS DIFFUSION PLANT |NOTIFICATION DATE: 06/22/98 | | RXTYPE: URANIUM ENRICHMENT FACILITY |NOTIFICATION TIME: 14:11 [ET]| |COMMENTS: 2 DEMOCRACY CENTER |EVENT DATE: 06/21/98 | | 6903 ROCKLEDGE DRIVE |EVENT TIME: 16:30[EDT]| | BETHESDA, MD 20817 (301)564-3200 |LAST UPDATE DATE: 06/22/98 | | CITY: PIKETON REGION: 3 +-----------------------------+ | COUNTY: PIKE STATE: OH |PERSON ORGANIZATION| |LICENSE#: GDP-2 AGREEMENT: N |MIKE JORDAN RDO | | DOCKET: 0707002 |DON COOL, NMSS EO | +------------------------------------------------+ | |NRC NOTIFIED BY: R LARSON | | |HQ OPS OFFICER: JOHN MacKINNON | | +------------------------------------------------+ | |EMERGENCY CLASS: NOT APPLICABLE | | |10 CFR SECTION: | | |NBNL RESPONSE-BULLETIN | | | | | | | | | | | | | | +------------------------------------------------+-----------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | POLYBOTTLE HOLDER DRAIN HOLES WERE FOUND TO BE BLOCKED BY SLEEVES PLACED IN | | THE HOLDERS TO MAINTAIN SPACING OF TALL POLYBOTTLES. | | | | NRC BULLETIN 91-01 24 HOUR NOTIFICATION | | | | ON JUNE 21, 1998 AT 1603 HOURS NUCLEAR CRITICALITY SAFETY PERSONNEL | | DETERMINED THAT A NUCLEAR CRITICALITY SAFETY APPROVAL (NCSA) REQUIREMENT | | WAS NOT BEING MAINTAINED IN THE X-705 DECONTAMINATION BUILDING. POLYBOTTLE | | HOLDER DRAIN HOLES WERE FOUND TO BE BLOCKED BY SLEEVES PLACED IN THE | | HOLDERS TO MAINTAIN SPACING OF TALL POLYBOTTLE, THIS VIOLATES REQUIREMENT 3 | | 4 OF NCSA PLANT-006.A04 WHICH STATES IN PART "HOLDERS SHALL CONTAIN AT | | LEAST ONE OPENING WITHIN 1.5 INCHES OF THE BOTTOM OF THE HOLDER TO ALLOW | | FOR DRAINAGE' AND CONSTITUTES THE LOSS OF CONTROL "B" (HOLDER GEOMETRY) IN | | THE DOUBLE CONTINGENCY MATRIX FOR CONTINGENCY EVENT A/B 4.2.A. CONTROL "A" | | (CONTAINER GEOMETRY) WAS MAINTAINED THROUGHOUT THIS EVENT. CONTROL "B" WAS | | REESTABLISHED AT 1930 HOURS UNDER THE DIRECTION OF NCS PERSONNEL. THERE WAS | | NO LOSS OF HAZARDOUS/RADIOACTIVE MATERIAL OR RADIOACTIVE/RADIOLOGICAL | | CONTAMINATION EXPOSURE AS A RESULT OF THIS EVENT. | | | | CORRECTIVE ACTIONS TO RESTORE SAFETY SYSTEM AND WHEN EACH WAS IMPLEMENTED: | | | | THE PROBLEM WAS CORRECTED MAINLY BY RAISING THE SLEEVE HIGH ENOUGH OUT OF | | THE HOLDER SO AS NOT TO BLOCK THE DRAIN HOLE. IN CASES WHERE THE SLEEVE | | COULD NOT BE MOVED, OR COULD NOT BE SECURED FROM FALLING BACK INTO THE | | BOTTOM OF THE HOLDER, THE HOLDER WAS REMOVED FROM SERVICE AND THE | | POLYBOTTLE STORED THERE WAS MOVED TO ANOTHER HOLDER. THIS WAS COMPLETED BY | | 1930 HOURS ON 06/21/98. | | | | POTENTIAL CRITICALITY PATHWAYS INVOLVED (BRIEF SCENARIO) OF HOW CRITICALITY | | COULD OCCUR: | | | | A CRITICALITY COULD NOT HAVE OCCURRED IN THE EVENT OF A CONTAINER FAILURE | | IN CONJUNCTION WITH A CONTAINER CONTAINING MORE THAN 20% ENRICHED | | SOLUTIONS, AND SIMULTANEOUS FULL REFLECTION AROUND THE HOLDER. | | | | THE NRC RESIDENT INSPECTOR WAS CONTACTED AND THE ONSITE DEPARTMENT OF | | ENERGY REPRESENTATIVE WAS CONTACTED. | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 34424 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: FT CALHOUN REGION: 4 |NOTIFICATION DATE: 06/22/98 | |UNIT: [1] [ ] [ ] STATE: NE |NOTIFICATION TIME: 16:06 [ET]| |RX TYPE: [1] CE |EVENT DATE: 06/22/98 | +------------------------------------------------+EVENT TIME: 13:45[CDT]| |NRC NOTIFIED BY: BROWN |LAST UPDATE DATE: 06/22/98 | |HQ OPS OFFICER: JOHN MacKINNON +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |BILL JONES 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 | | | | | | | | | +-----+---------------------------------------------+--------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | STATE OF NEBRASKA DEPARTMENT OF ENVIRONMENTAL QUALITY NOTIFIED OF EXCEEDING | | pH DISCHARGE LIMITS. | | | | DUE TO EXCESSIVE RAINFALL THE LICENSEES SEWAGE LAGOONS HAD TO BE DISCHARGED | | TO THE MISSOURI RIVER. THE pH OF LIQUID ENTERING THE MISSOURI RIVER FROM | | THE SEWAGE LAGOONS ON 06/05/98 AND ON 06/12/98 EXCEEDED THE STATE pH LIMIT | | OF 9.00. SAMPLES OF THE DISCHARGES WERE TAKEN BY AN OUTSIDE VENDOR AND THE | | LICENSEE RECEIVED BACK RESULTS OF THE DISCHARGES pH TODAY (06/22/98). THE | | pH OF THE LIQUID DISCHARGED TO THE MISSOURI RIVER ON 06/05/98 WAS 9.03 AND | | THE pH OF THE LIQUID DISCHARGED TO THE MISSOURI RIVER ON 06/12/98 WAS | | 10.00. | | | | THE NRC RESIDENT INSPECTOR WAS NOTIFIED OF THIS EVENT BY THE LICENSEE. | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 34425 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: PILGRIM REGION: 1 |NOTIFICATION DATE: 06/22/98 | |UNIT: [1] [ ] [ ] STATE: MA |NOTIFICATION TIME: 20:08 [ET]| |RX TYPE: [1] GE-3 |EVENT DATE: 06/22/98 | +------------------------------------------------+EVENT TIME: 19:13[EDT]| |NRC NOTIFIED BY: JEFF FOX |LAST UPDATE DATE: 06/22/98 | |HQ OPS OFFICER: JOHN MacKINNON +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |JIM TRAPP 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 100 POWER OPERATION | 100 POWER OPERATION | | | | | | | | | +-----+---------------------------------------------+--------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | EMERGENCY DIESEL GENERATORS UNDER A CERTAIN SCENARIO DO NOT MEET THE FINAL | | SAFETY ANALYSIS REPORT TIME REQUIREMENT FOR SUPPLYING CONTINUOUS POWER TO | | THE EMERGENCY BUSES. | | | | DURING AN ON GOING DESIGN BASIS RECONSTITUTION, ENGINEERING DISCOVERED THAT | | DURING A DESIGN BASIS LOSS OF COOLANT ACCIDENT CONCURRENT WITH A DEGRADED | | GRID VOLTAGE (DECREASES TO LESS THAN 340 VOLTS) RESTORATION OF CONTINUOUS | | POWER TO THEIR EMERGENCY BUSES VIA THE EMERGENCY DIESEL GENERATORS WOULD | | TAKE 20.8 SECONDS. THE LICENSEE'S FINAL SAFETY ANALYSIS REPORT STATES THAT | | THEIR EMERGENCY DIESEL GENERATORS ARE TO RESTORE CONTINUOUS POWER TO THE | | EMERGENCY BUSES WITHIN 14.4 SECONDS. WITH A DESIGN BASIS LOSS OF COOLANT | | ACCIDENT CONCURRENT WITH A DEGRADED VOLTAGE THE FEEDER BREAKER TO THE | | EMERGENCY BUSES WOULD NOT TRIP FOR 10.2 SECONDS. AFTER THE FEEDER BREAKER | | TRIPPED THE EMERGENCY DIESEL GENERATORS WOULD NOT BE SUPPLYING CONTINUOUS | | POWER TO THE EMERGENCY BUSES FOR AN ADDITIONAL 10.6 SECONDS (TOTAL 20.8 | | SECONDS). THE LICENSEE HAS PROCEDURES IN PLACE TO PREVENT THIS SCENARIO | | FROM OCCURRING. | | | | ENGINEERING PROVIDED A VERBAL OPERABILITY RECOMMENDATION BASED ON THE | | FOLLOWING: PEAK CLAD TEMPERATURE WILL REMAIN LESS THAN 1900 DEGREES F WITH | | THE ADDITIONAL TIME DELAY FROM DATA OBTAINED FROM EXTRAPOLATION OF THE | | SAFER-GESTAR DBA LOCA ANALYSIS. THIS TEMPERATURE IS LESS THAN 2200 DEGREES | | F, WHICH IS THE DESIGN BASIS TEMPERATURE. IN ADDITION, PROCEDURES ARE IN | | PLACE TO PRECLUDE ANY DEGRADED VOLTAGE SCENARIO. IN ADDITION, THE | | LICENSEE'S BULK POWER DISPATCHER HAS PROCEDURES IN PLACE TO NOTIFY PILGRIM | | STATION IN THE EVENT THEY CANNOT ENSURE ADEQUATE GRID VOLTAGE IF THE UNIT | | SHOULD TRIP. FURTHERMORE, THE OPERATING CREW WILL VERIFY THIS CONDITION AT | | THE BEGINNING OF EACH SHIFT. | | | | BASED UPON THE ABOVE, THE DEGRADED VOLTAGE SYSTEM IS OPERABLE, BUT OUTSIDE | | THE DESIGN BASIS. | | | | SEE EVENT # 34426 | | | | THE NRC RESIDENT INSPECTOR WAS NOTIFIED OF THIS EVENT BY THE LICENSEE. | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 34426 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: PILGRIM REGION: 1 |NOTIFICATION DATE: 06/22/98 | |UNIT: [1] [ ] [ ] STATE: MA |NOTIFICATION TIME: 20:52 [ET]| |RX TYPE: [1] GE-3 |EVENT DATE: 06/22/98 | +------------------------------------------------+EVENT TIME: 20:30[EDT]| |NRC NOTIFIED BY: JEFF FOX |LAST UPDATE DATE: 06/22/98 | |HQ OPS OFFICER: JOHN MacKINNON +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |JIM TRAPP 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 100 POWER OPERATION | 100 POWER OPERATION | | | | | | | | | +-----+---------------------------------------------+--------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | CORE SPRAY PUMP MAY TRIP ON OVERCURRENT WHICH WOULD REQUIRE OPERATOR ACTION | | TO CLOSE ITS BREAKER. | | | | LAWRENCE LIVERMORE LABORATORIES REVIEWED PILGRIM'S VOLTAGE ANALYSIS IN | | 1982. THIS REVIEW DETERMINED THAT THE CORE SPRAY PUMPS WOULD BE PROTECTED | | DURING THE 10.2 SECOND TIME DELAY FOR THE FEEDER BREAKER TO TRIP OPEN DUE | | TO DEGRADED GRID VOLTAGE. AFTER REEVALUATING THIS REPORT DURING A DESIGN | | BASIS REVIEW (DESIGN BASIS LOSS OF COOLANT ACCIDENT CONCURRENT WITH | | DEGRADED GRID VOLTAGE), ENGINEERING NOW BELIEVES THAT THE CORE SPRAY PUMPS | | WOULD TRIP PRIOR TO THE DEGRADED VOLTAGE PROTECTION RELAYS ISOLATING THE | | EMERGENCY BUSES. THEREFORE, THE LICENSEE THINKS THAT THE CORE SPRAY PUMP | | BREAKERS WOULD TRIP ON OVERCURRENT DURING THE 10.2 SECOND TIME FOR THE | | FEEDER BREAKERS TO OPEN. WITH THE BREAKERS FOR THE CORE SPRAY PUMPS TRIPPED | | OPEN BY OVERCURRENT, OPERATOR ACTION WOULD BE REQUIRED TO CLOSE THE CORE | | SPRAY PUMP BREAKERS BEFORE THE CORE SPRAY PUMPS COULD BE PLACED BACK INTO | | SERVICE. THE FINAL SAFETY ANALYSIS REPORT STATES THAT ALL EMERGENCY | | EQUIPMENT THAT HAS BEEN STRIPPED FROM THE EMERGENCY BUSES IS AUTOMATICALLY | | SEQUENCED BACK ONTO THE EMERGENCY BUSES. HOWEVER, IF THE CORE SPRAY PUMP | | BREAKERS TRIPPED ON OVERCURRENT, THEY WOULD HAVE TO BE MANUALLY RECLOSED TO | | PLACE THE PUMPS BACK IN SERVICE. THE LICENSEE'S PROCEDURES ARE INTENDED TO | | PROTECT AGAINST THIS KIND OF EVENT. | | | | ENGINEERING PROVIDED A VERBAL OPERABILITY RECOMMENDATION BASED ON THE | | FOLLOWING: PEAK CLAD TEMPERATURE WILL REMAIN LESS THAN 1900 DEGREES F WITH | | THE ADDITIONAL TIME DELAY FROM DATA OBTAINED FROM EXTRAPOLATION OF THE | | SAFER-GESTAR DBA LOCA ANALYSIS. THIS TEMPERATURE IS LESS THAN 2200 DEGREES | | F, WHICH IS THE DESIGN BASIS TEMPERATURE. IN ADDITION, PROCEDURES ARE IN | | TO PRECLUDE ANY DEGRADED VOLTAGE SCENARIO. IN ADDITION, THE LICENSEE'S | | BULK POWER DISPATCHER HAS PROCEDURES IN PLACE TO NOTIFY PILGRIM STATION IN | | THE EVENT THEY CANNOT INSURE ADEQUATE GRID VOLTAGE IF THE UNIT SHOULD TRIP. | | FURTHERMORE, EACH SHIFT, THE OPERATING CREW WILL VERIFY THIS CONDITION AT | | THE BEGINNING OF THE SHIFT. | | | | BASED ON THE ABOVE, DEGRADED VOLTAGE SYSTEM IS OPERABLE, BUT OUTSIDE DESIGN | | BASIS. | | | | SEE EVENT # 34425 | | | | THE NRC RESIDENT INSPECTOR WAS NOTIFIED OF THIS EVENT BY THE LICENSEE. | +------------------------------------------------------------------------------+