U.S. Nuclear Regulatory Commission Operations Center Event Reports For 06/25/98 - 06/26/98 ** EVENT NUMBERS ** 34334 34435 34436 34437 !!!!!!!!! THIS EVENT HAS BEEN RETRACTED. THIS EVENT HAS BEEN RETRACTED !!!!!!! +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 34334 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: SALEM REGION: 1 |NOTIFICATION DATE: 06/03/98 | |UNIT: [1] [ ] [ ] STATE: NJ |NOTIFICATION TIME: 12:24 [ET]| |RX TYPE: [1] W-4-LP,[2] W-4-LP |EVENT DATE: 06/03/98 | +------------------------------------------------+EVENT TIME: 11:10[EDT]| |NRC NOTIFIED BY: STEVE SAUER |LAST UPDATE DATE: 06/25/98 | |HQ OPS OFFICER: HENRY BAILEY +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |LAURIE PELUSO RDO | |ASHU 50.72(b)(1)(i)(A) PLANT S/D REQD BY TS | | |NLCO TECH SPEC LCO A/S | | | | | | | | | | | +-----+----------+-------+--------+--------------+--+--------+-----------------+ |UNIT |SCRAM CODE|RX CRIT|INIT PWR| INIT RX MODE |CURR PWR| CURR RX MODE | +-----+----------+-------+--------+-----------------+--------+-----------------+ | 1 | N Y 100 POWER OPERATION | 55 POWER OPERATION | | | | | | | | | +-----+---------------------------------------------+--------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | TECHNICAL SPECIFICATION REQUIRED SHUTDOWN DUE TO AN INOPERABLE STEAM | | GENERATOR FEEDWATER PUMP TRIP FUNCTION FOR BOTH TRAINS OF THE SOLID STATE | | PROTECTION SYSTEM. | | | | DURING SOLID STATE PROTECTION SYSTEM (SSPS) SURVEILLANCE TESTING AT SALEM | | UNIT 1 ON 06/03/98 AT 0825 HOURS, IT WAS DISCOVERED THAT THE OUTPUT FOR A | | SLAVE RELAY DID NOT MEET SURVEILLANCE REQUIREMENTS. THE PROBLEM WAS | | DETERMINED TO BE ASSOCIATED WITH THE TRIP CIRCUITRY FOR THE #12 STEAM | | GENERATOR FEEDWATER PUMP (SGFP), AND THE TECHNICAL SPECIFICATION (TS) FOR | | ENGINEERED SAFETY FEATURE ACTUATION CIRCUITRY TRAIN 'A' WAS ENTERED. AT | | 1040 HOURS, A POWER REDUCTION WAS INITIATED TO EFFECT REPAIRS TO THE TRIP | | CIRCUITRY FOR THE #12 SGFP. | | | | FURTHER INVESTIGATION REVEALED THE PROBLEM TO BE WITH THE TRIP SOLENOID FOR | | THE #12 SGFP. FOLLOWING THIS DISCOVERY AND THE REVIEW OF SSPS CIRCUITRY, | | IT WAS DETERMINED THAT THE FAILURE OF THE TRIP SOLENOID RENDERED THE #12 | | SGFP TRIP FUNCTION FOR BOTH TRAINS OF SSPS INOPERABLE. THIS WAS DETERMINED | | AT 1110 HOURS AND TS 3.0.3 WAS ENTERED. | | | | THE SPECIFIC SIGNALS AFFECTED ARE THE TRIP OF THE #12 SGFP ON A HIGH-HIGH | | STEAM GENERATOR LEVEL OR ANY SAFETY INJECTION SIGNAL. CURRENT PLANS ARE TO | | REDUCE POWER TO 55%, TRIP THE #12 SGFP, AND EFFECT REPAIRS TO THE TRIP | | CIRCUITRY. FOLLOWING REPAIRS, THE TRIP CIRCUITRY WILL BE RETESTED PRIOR TO | | INCREASING POWER. ALL OTHER SYSTEMS AND SAFETY-RELATED EQUIPMENT ARE | | OPERATIONAL AT THIS TIME. ADDITIONAL INFORMATION WILL BE PROVIDED AT NRC | | REQUEST OR IF THERE ARE STATUS CHANGES. | | | | THE LICENSEE NOTIFIED THE NRC RESIDENT INSPECTOR. | | | | * * * UPDATE AT 1623 ON 06/25/98 FROM FRANK SOENS RECEIVED BY TROCINE * * * | | | | THE ENTRY INTO TS 3.0.3 WAS MADE DUE TO THE POTENTIAL INOPERABILITY OF BOTH | | SSPS TRAINS. BASED ON FURTHER DETAILED REVIEW OF THE EVENT, THE LICENSEE | | DETERMINED THAT THIS EVENT WAS NOT REPORTABLE BECAUSE ENTRY INTO TS 3.0.3 | | WAS NOT NECESSARY. THEREFORE, THE LICENSEE IS RETRACTING THIS EVENT | | NOTIFICATION. THIS CONCLUSION WAS REACHED BY THE LICENSEE BASED ON SYSTEM | | LEVEL REDUNDANCY OF THE FEEDWATER ISOLATION FUNCTION. | | | | THE PURPOSE OF THE HIGH-HIGH STEAM GENERATOR TRIP AND SAFETY INJECTION | | INPUT TO THE FEEDWATER ISOLATION CIRCUITRY IS TO PREVENT A REACTOR | | OVERPOWER CONDITION FROM OCCURRING DUE TO AN OVERFEED OF THE STEAM | | GENERATORS. THIS TRANSIENT IS DESCRIBED IN UPDATE FINAL SAFETY ANALYSIS | | REPORT SECTION 15.2.10. THE SAFETY FUNCTION IS COMPLETED IF, INCLUDING A | | SINGLE FAILURE, FEEDWATER FLOW TO THE STEAM GENERATOR IS TERMINATED. IF | | THE SINGLE FAILURE IS THE FAILURE OF THE SGFP TRIP, THE CLOSURE OF THE MAIN | | FEEDWATER ISOLATION VALVES (11-14BF13) AND THE MAIN FEEDWATER REGULATING | | VALVES (11-14BF19 AND 11-14BF40) WILL TERMINATE FEEDWATER FLOW TO THE STEAM | | GENERATOR. THEREFORE, FEEDWATER FLOW IS TERMINATED FROM A SYSTEM LEVEL AS | | REQUIRED GIVEN THE SINGLE FAILURE OF THE SGFP TRIP. | | | | A SECOND FUNCTION OF THE SGFP TRIP IS THE START OF THE AUXILIARY FEEDWATER | | PUMPS WITH THE LOSS OF BOTH SGFPs. THIS FUNCTION IS TESTED AS PART OF TS | | LIMITING CONDITION FOR OPERATION 3.3.2.1, PART 8.f. THIS START OF THE | | AUXILIARY FEEDWATER PUMPS IS A SEPARATE PART OF THE CIRCUITRY BECAUSE A | | HIGH STEAM GENERATOR LEVEL CANNOT EXIST AT THE SAME TIME AS A LOW STEAM | | GENERATOR WATER LEVEL CONDITION. THE AUXILIARY FEEDWATER PUMPS ARE ALSO | | STARTED ON VARIOUS OTHER SIGNALS, SUCH AS, SAFETY INJECTION AND LOW-LOW | | STEAM GENERATOR LEVEL. THEREFORE, THE LICENSEE BELIEVES THAT THE CIRCUITRY | | HAS THE REDUNDANCY AND DIVERSITY REQUIRED OF THE REACTOR PROTECTION SYSTEM | | IN ACCORDANCE WITH THE LICENSING AND DESIGN BASIS REQUIREMENTS. | | | | FURTHER REVIEW OF THE TSs BY PLANT PERSONNEL DETERMINED THAT THE ENTRY INTO | | TS 3.0.3 BY THE OPERATING CREW WAS CONSERVATIVE AT THE TIME BASED ON THE | | INFORMATION. SINCE THE COMPONENT FAILURE WAS ACTUALLY ON THE #12 SGFP | | (WHICH IS LOCATED OUTSIDE OF THE SSPS CABINETS), ENTRY INTO TS 3.3.2.1, | | PART 8.F WOULD HAVE BEEN APPROPRIATE WHEN THE DETERMINATION OF THE | | COMPONENT FAILURE WAS MADE. OTHER PLANTS HAVE SEPARATE LINE ITEMS TO DEAL | | WITH THE FAILURE OF THE SLAVE OUTPUT RELAYS AND THE COMPONENTS DOWNSTREAM | | OF THE SSPS OUTPUT CABINETS. THE LICENSEE IS EVALUATING A CHANGE TO THIS | | TS TO IMPROVE THE OPERATORS' RESPONSE TO THESE SITUATIONS. | | | | THE LICENSEE HAS NOTIFIED THE NRC RESIDENT INSPECTOR AND PLANS TO NOTIFY | | THE BUREAU OF NUCLEAR ENGINEERING FOR THE STATE OF NEW JERSEY. THE NRC | | OPERATIONS CENTER NOTIFIED THE R1DO (TRAPP). | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 34435 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: DAVIS BESSE REGION: 3 |NOTIFICATION DATE: 06/24/98 | |UNIT: [1] [ ] [ ] STATE: OH |NOTIFICATION TIME: 21:37 [ET]| |RX TYPE: [1] B&W-R-LP |EVENT DATE: 06/24/98 | +------------------------------------------------+EVENT TIME: 21:18[EDT]| |NRC NOTIFIED BY: MCGEE |LAST UPDATE DATE: 06/26/98 | |HQ OPS OFFICER: JOHN MacKINNON +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: ALERT +-----------------------------+ |10 CFR SECTION: |MIKE JORDAN/REG 3 RDO | |AAEC 50.72(a)(1)(i) EMERGENCY DECLARED |LEDYARD MARSH/NRR EO | | |STUART RUBIN/AEOD IRD | | |TIM MARTIN/AEOD ET | | |CARL PAPERIELLO/REG3 RA | | |JANET QUISSELL/AEOD RCT | +-----+----------+-------+--------+--------------+--+--------+-----------------+ |UNIT |SCRAM CODE|RX CRIT|INIT PWR| INIT RX MODE |CURR PWR| CURR RX MODE | +-----+----------+-------+--------+-----------------+--------+-----------------+ | 1 | A/R Y 99 POWER OPERATION | 0 HOT STANDBY | | | | | | | | | +-----+---------------------------------------------+--------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | TURBINE TRIP/REACTOR CAUSED BY LOSS OF OFFSITE POWER | | | | LIGHTNING STRIKES WERE SEEN IN THE SWITCHYARD. THE LICENSEE STARTED BOTH | | EMERGENCY DIESEL GENERATORS. AT 2047 EDT, A TURBINE TRIP/REACTOR TRIP | | OCCURRED DUE TO LOSS OF OFFSITE POWER. A TORNADO ONSITE DAMAGED THE | | ELECTRICAL SWITCHYARD, THE COOLING TOWER, AND THE TURBINE BUILDING. THE | | LICENSEE DECLARED AN ALERT AT 2118 EDT. THE PLANT IS ON NATURAL | | CIRCULATION WITH AUXILIARY FEEDWATER SUPPLYING EMERGENCY FEEDWATER TO THE | | ONCE THROUGH STEAM GENERATORS. | | | | THE NRC ENTERED STANDBY AT 2201 EDT ON 06/24/98. | | | | * * * UPDATE AT 0001 EDT ON 06/25/98 * * * | | | | A COMMISSIONER'S ASSISTANTS BRIEFING WAS HELD AT 0001 EDT ON 06/24/98. | | (REFER TO THE HOO LOG FOR PARTICIPANTS.) | | | | * * * UPDATE AT 0211 EDT ON 06/25/98 * * * | | | | THE NRC DOWNGRADED THE AGENCY'S RESPONSE TO THE MONITORING PHASE OF NORMAL | | MODE AT 0211 EDT ON 06/25/98. | | | | * * * UPDATE AT 0800 EDT ON 06/25/98 * * * | | | | A COMMISSIONER'S ASSISTANTS BRIEFING WAS HELD AT 0800 EDT ON 06/25/98. | | (REFER TO THE HOO LOG FOR PARTICIPANTS.) | | | | * * * UPDATE AT 1500 EDT ON 06/25/98 BY TROCINE * * * | | | | IN ADDITION TO THE NOTIFICATIONS REFERENCED ABOVE, THE FOLLOWING NRC | | REPRESENTATIVES WERE NOTIFIED: RESIDENT INSPECTOR (CAMPBELL); REGION 3 | | (BURGESS, CALDWELL, CANIANO, GROBE, AND KOZAK); PUBLIC AFFAIRS OFFICE | | (BEECHER), AND CHAIRMAN JACKSON'S OFFICE (VIRGILIO). THE FOLLOWING | | AGENCIES WERE ALSO NOTIFIED: STATE OF OHIO (STEVE HORNUNG); FEDERAL | | EMERGENCY MANAGEMENT AGENCY (CALDWELL); DEPARTMENT OF ENERGY (TOM TANNER); | | ENVIRONMENTAL PROTECTION AGENCY (NAME NOT PROVIDED); DEPARTMENT OF HEALTH | | AND HUMAN SERVICES (JIM RABB); U.S. DEPARTMENT OF AGRICULTURE (GEORGE | | BICKERTON); WHITE HOUSE SIT ROOM (DUTY OFFICER); STATE DEPARTMENT (DENNIS | | OLSON); EMERGENCY PREPAREDNESS CANADA (DUTY OFFICER); ATOMIC ENERGY CONTROL | | BOARD OF CANADA (BODEIN, SUSAN COPLAND, AND BILL WHITEHEAD); AND | | INTERNATIONAL ATOMIC ENERGY AGENCY (CARLOS NOGUEIRE DE OLIVEIRA). | | | | * * * UPDATE 0200EDT 6/26/98 FROM ERIC WEINSTEIN (RCT) TO S.SANDIN * * * | | | | THE LICENSEE EXITED TS 3.0.3 AND DOWNGRADED THE ALERT TO AN UNUSUAL EVENT | | BASED ON RESTORING ONE SOURCE OF OFFSITE POWER WITH ANOTHER SOURCE | | AVAILABLE ONSITE (EDG#1). | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 34436 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: INDIAN POINT REGION: 1 |NOTIFICATION DATE: 06/25/98 | |UNIT: [ ] [3] [ ] STATE: NY |NOTIFICATION TIME: 19:49 [ET]| |RX TYPE: [2] W-4-LP,[3] W-4-LP |EVENT DATE: 06/25/98 | +------------------------------------------------+EVENT TIME: 19:10[EDT]| |NRC NOTIFIED BY: STEVEN DAVIS |LAST UPDATE DATE: 06/25/98 | |HQ OPS OFFICER: LEIGH TROCINE +-----------------------------+ +------------------------------------------------+ 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 | +-----+----------+-------+--------+-----------------+--------+-----------------+ | | | | | 3 | N Y 100 POWER OPERATION | 99 POWER OPERATION | | | | | +-----+---------------------------------------------+--------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | TECHNICAL SPECIFICATION REQUIRED SHUTDOWN | | | | THE FOLLOWING TEXT IS A PORTION OF A FACSIMILE RECEIVED FROM THE LICENSEE: | | | | "AT 1910 ON 06/25/98, A PLANT SHUTDOWN WAS COMMENCED IN ACCORDANCE WITH | | TECHNICAL SPECIFICATION 3.3.A.5.a IN ANTICIPATION OF EXCEEDING THE 24-HOUR | | ALLOWED OUTAGE TIME OF TECHNICAL SPECIFICATION 3.3.A.4.e FOR SAFETY | | INJECTION VALVE SI-MOV-1835B. AT 1950 ON 06/24/98, [VALVE] SI-MOV-1835B | | DID NOT INDICATE FULLY CLOSED DURING A STROKE TIMING TEST. THE VALVE WAS | | DECLARED INOPERABLE AND MANUALLY CLOSED. MAINTENANCE AND TESTING ARE | | [CURRENTLY] IN PROGRESS ON THE VALVE." | | | | "MAINTENANCE - MOVATS - TORQUE SWITCH SETTING ADJUSTED." | | | | "[VALVE SI-MOV-]1835B IS A PARALLEL CONTAINMENT ISOLATION VALVE ON THE | | [BORON INJECTION TANK] SAFETY INJECTION HEADER." | | | | "'B' [AND] 'C' TESTING (APPENDIX 'J') AND STROKE TIMING TEST TO BE | | PERFORMED." | | | | THE LICENSEE NOTIFIED THE NRC RESIDENT INSPECTOR. | | | | * * * UPDATE AT 2111 ON 06/25/98 FROM STEVE DAVIS RECEIVED BY TROCINE * * * | | | | THE SHUTDOWN WAS TERMINATED AT 2106 WITH THE REACTOR AT 81% POWER. THE | | LICENSEE PLANS TO STABILIZE THE UNIT PRIOR TO COMMENCING POWER ASCENSION. | | THE LICENSEE ALSO PLANS TO NOTIFY THE NRC RESIDENT INSPECTOR. THE NRC | | OPERATIONS OFFICER NOTIFIED THE R1DO (TRAPP). | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 34437 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: DAVIS BESSE REGION: 3 |NOTIFICATION DATE: 06/25/98 | |UNIT: [1] [ ] [ ] STATE: OH |NOTIFICATION TIME: 20:20 [ET]| |RX TYPE: [1] B&W-R-LP |EVENT DATE: 06/25/98 | +------------------------------------------------+EVENT TIME: 20:13[EDT]| |NRC NOTIFIED BY: GERALD WOLF |LAST UPDATE DATE: 06/26/98 | |HQ OPS OFFICER: LEIGH TROCINE +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |MIKE JORDAN RDO | |ADEV 50.72(b)(1)(i)(B) DEVIATION FROM T SPEC |LEDYARD (TAD) MARSH EO | | |STUART RUBIN, AEOD IRD | | |THOMAS HILTZ EDO | | | | | | | +-----+----------+-------+--------+--------------+--+--------+-----------------+ |UNIT |SCRAM CODE|RX CRIT|INIT PWR| INIT RX MODE |CURR PWR| CURR RX MODE | +-----+----------+-------+--------+-----------------+--------+-----------------+ | 1 | N N 0 HOT STANDBY | 0 HOT STANDBY | | | | | | | | | +-----+---------------------------------------------+--------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | TECHNICAL SPECIFICATION DEVIATION - 10 CFR 50.54(X) | | | | AT 1313 ON 06/25/98, ONE OF TWO OPERATING EMERGENCY DIESEL GENERATORS (#1) | | WAS DECLARED INOPERABLE DUE TO ELEVATED ROOM TEMPERATURES. THE OTHER | | EMERGENCY DIESEL GENERATOR (#2) REMAINED OPERABLE, BUT THE SITE IS STILL | | WITHOUT OFFSITE POWER. (REFER TO RELATED EN 34435.) | | | | AT 1313, TEMPERATURE FOR THE #1 EMERGENCY DIESEL GENERATOR ROOM WAS 2øF | | ABOVE THE MAXIMUM ROOM TEMPERATURE LIMIT OF 120øF, AND THE OUTSIDE AIR | | TEMPERATURE WAS APPROXIMATELY 97øF. THE TEMPERATURE IN THE #2 EMERGENCY | | DIESEL GENERATOR ROOM WAS CLOSE TO THE LIMIT, BUT IT WAS SLIGHTLY LOWER | | THAN THE LIMIT. THE LICENSEE STATED THAT CURRENT ROOM TEMPERATURES ARE NOT | | EXPECTED TO INCREASE DUE TO THE LATENESS OF THE HOUR (2020). | | | | TECHNICAL SPECIFICATION 3.0.3 REQUIRED THE LICENSEE TO PLACE THE UNIT IN | | MODE 4 (COLD SHUTDOWN) FROM MODE 3 (HOT SHUTDOWN) WITHIN 7 HOURS [TO REDUCE | | THE ROOM TEMPERATURE BELOW THE LIMIT WITHIN 1 HOUR OR TO PLACE THE UNIT IN | | MODE 4 WITHIN THE FOLLOWING 6 HOURS (BY 2013)]. HOWEVER, BECAUSE THE UNIT | | IS IN NATURAL CIRCULATION (DUE TO THE LOSS OF OFFSITE POWER), THE COOLDOWN | | IS LIMITED TO 10øF PER HOUR, AND MODE 4 WAS NOT ACHIEVED WITHIN 7 HOURS. | | | | THE LICENSEE STATED THAT THERE IS A CHANCE THAT NATURAL CIRCULATION COOLING | | COULD BE LOST IF THIS 10øF-PER-HOUR COOLDOWN RATE IS INCREASED. THERE IS | | NO FORCED CIRCULATION COOLING AT THIS TIME DUE TO THE LOSS OF OFFSITE | | POWER. THE LICENSEE IS CURRENTLY ATTEMPTING TO RESTORE OFFSITE POWER (ONE | | CIRCUIT). | | | | THE LICENSEE NOTIFIED THE NRC RESIDENT INSPECTOR. | | | | * * * UPDATE AT 0015 ON 06/26/98 FROM WOLF TO TROCINE * * * | | | | THE FOLLOWING INFORMATION WAS REQUESTED BY THE R3DO (JORDAN) FOR | | CLARIFICATION: | | | | * THROUGHOUT THE AFTERNOON, TEMPERATURES IN THE #1 EMERGENCY DIESEL | | GENERATOR ROOM WENT ABOVE AND BELOW THE TEMPERATURE LIMIT. HOWEVER, THE | | EXACT ROOT CAUSE FOR THE ELEVATED TEMPERATURES WAS NOT KNOWN, AND THE | | LICENSEE OPTED TO KEEP THE #1 EMERGENCY DIESEL GENERATOR IN AN | | INOPERABLE STATUS. (BOTH EMERGENCY DIESEL GENERATORS WERE RUNNING.) | | | | * ONE CIRCUIT OF OFFSITE POWER WAS RESTORED, AND THE EMERGENCY DIESEL | | GENERATORS HAVE SINCE BEEN SECURED. (OFFSITE POWER TO THE 'A' AND 'B' | | BUSES WAS RESTORED AT 2020 ON 06/25/98.) | | | | * * * UPDATE AT 0117 ON 06/26/98 FROM KENNEDY TO TROCINE * * * | | | | THE FOLLOWING INFORMATION WAS REQUESTED BY THE R3DO (JORDAN) FOR | | CLARIFICATION: | | | | * AT THE TIME OF THE EVENT NOTIFICATION (2020 ON 06/25/98), TEMPERATURE IN | | THE #1 EMERGENCY DIESEL GENERATOR ROOM WAS 108øF. TEMPERATURE IN THIS | | ROOM WAS 109øF AT 1925 ON 06/25/98.) | +------------------------------------------------------------------------------+