U.S. Nuclear Regulatory Commission Operations Center Event Reports For 10/21/94 - 10/24/94 ** EVENT NUMBERS ** 27918 27933 27934 27935 27936 27937 27938 27939 27940 27941 +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 27918 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: CALVERT CLIFFS REGION: 1 |NOTIFICATION DATE: 10/18/94 | |UNIT: [1] [2] [ ] STATE: MD |NOTIFICATION TIME: 15:50 [ET]| |RX TYPE: [1] CE,[2] CE |EVENT DATE: 10/18/94 | +------------------------------------------------+EVENT TIME: 15:00[EDT]| |NRC NOTIFIED BY: MARK GECKLE |LAST UPDATE DATE: 10/21/94 | |HQ OPS OFFICER: WILLIAM HUFFMAN +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |GLENN MEYER RDO | |DDDD 73.71 UNSPECIFIED PARAGRAPH | | | | | | | | | | | | | | +-----+----------+-------+--------+--------------+--+--------+-----------------+ |UNIT |SCRAM CODE|RX CRIT|INIT PWR| INIT RX MODE |CURR PWR| CURR RX MODE | +-----+----------+-------+--------+-----------------+--------+-----------------+ | 1 | N Y 100 POWER OPERATION | 100 POWER OPERATION | | 2 | N Y 100 POWER OPERATION | 100 POWER OPERATION | | | | | +-----+---------------------------------------------+--------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | FALSIFICATION OF PRE-EMPLOYMENT SCREENING. | | | | THE LICENSEE HAS DETERMINED THAT A CONTRACT EMPLOYEE FALSIFIED HIS | | PRE-EMPLOYMENT SECURITY SCREENING. THE CONTRACTOR IS EMPLOYED BY BARLETT | | NUCLEAR AND WORKED ONSITE AS AN INSULATOR. HIS SITE ACCESS BADGE HAS BEEN | | SUSPENDED. | | | | THE NRC RESIDENT INSPECTOR WILL BE INFORMED. | | | | ***UPDATE @ 06:26 ON 10/21/94 TO GOULD BY BURRELL(BG&E)*** THIS UPDATE IS | | TO CLARIFY THAT THE BACKGROUND INVESTIGATION WAS COMPLETED BY BG&E UNDER | | ALL THE RULE REQUIREMENTS. THE INDIVIDUAL AGAINST WHOM THE ACTION WAS TAKEN | | WAS EMPLOYED BY BARTLETT NUCLEAR, BUT BARTLETT NUCLEAR PLAYED NO PART IN | | THE ORIGINAL IN PROCESSING ACTIVITIES AND HAS ABSOLUTELY NO INVOLVEMENT IN | | THIS MATTER. | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 27933 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: OCONEE REGION: 2 |NOTIFICATION DATE: 10/21/94 | |UNIT: [ ] [2] [ ] STATE: SC |NOTIFICATION TIME: 15:38 [ET]| |RX TYPE: [1] B&W-L-LP,[2] B&W-L-LP,[3] B&W-L-LP |EVENT DATE: 10/21/94 | +------------------------------------------------+EVENT TIME: 13:20[EDT]| |NRC NOTIFIED BY: RON LINGLE |LAST UPDATE DATE: 10/21/94 | |HQ OPS OFFICER: JOHN MacKINNON +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |CHRIS CHRISTENSEN 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 REFUELING | 0 REFUELING | | | | | +-----+---------------------------------------------+--------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | INADVERTENT ACTUATION OF CHANNELS 1 THROUGH 4 OF THEIR ENGINEER SAFEGUARDS | | SYSTEM. | | | | LICENSEE WAS PERFORMING A SURVEILLANCE TEST OF THEIR ENGINEER SAFEGUARD | | SYSTEM. ONE LOW PRESSURE REACTOR COOLANT SYSTEM CHANNEL HAD BEEN PLACED IN | | ITS TRIPPED POSITION PER THE SURVEILLANCE TEST PROCEDURE. AN ELECTRICAL I&E | | TECHNICIAN FOLLOWING THE INSTRUCTIONS OF THE SURVEILLANCE TEST PROCEDURE | | TRIPPED A SECOND CHANNEL OF THE LOW PRESSURE RCS LOGIC BUT THE I&E | | TECHNICIAN WAS IN THE WRONG CABINET. THIS CAUSED CHANNELS ONE THROUGH FOUR | | OF THEIR ENGINEERING SAFEGUARDS SYSTEM TO ACTUATE. SINCE THEIR REACTOR IS | | DEFUELED ONLY TWO LOW PRESSURE SERVICE WATER PUMPS STARTED (ONE LOW | | PRESSURE SERVICE WATER PUMP WAS ALREADY OPERATING WHEN THE OTHER TWO | | STARTED) AND THEIR EMERGENCY POWER SYSTEM (KEOWEE STARTED UP IN ONLY ITS | | STANDBY MODE OF OPERATION). LICENSEE SECURED THEIR KEOWEE AND ALSO SECURED | | THE TWO LOW PRESSURE SERVICE WATER PUMPS WHICH AUTOMATICALLY STARTED. | | LICENSEE DID NOT LOSE SPENT FUEL POOLING COOLING. | | | | RESIDENT INSPECTOR WAS INFORMED BY THE LICENSEE OF THIS EVENT. | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 27934 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: PALO VERDE REGION: 4 |NOTIFICATION DATE: 10/21/94 | |UNIT: [1] [ ] [ ] STATE: AZ |NOTIFICATION TIME: 16:52 [ET]| |RX TYPE: [1] CE,[2] CE,[3] CE |EVENT DATE: 10/21/94 | +------------------------------------------------+EVENT TIME: 13:05[MST]| |NRC NOTIFIED BY: RANDY BETHKE |LAST UPDATE DATE: 10/21/94 | |HQ OPS OFFICER: JOHN MacKINNON +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |CHRIS VANDENBURGH 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 98 POWER OPERATION | 98 POWER OPERATION | | | | | | | | | +-----+---------------------------------------------+--------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | SPRAY POND PUMPS EXCEED THEIR DESIGN FLOW RATE. | | | | CONDITION HAS BEEN IDENTIFIED IN UNIT 1 ONLY WHERE THE ACTUAL FLOW RATE OF | | THE SPRAY POND PUMPS EXCEED DESIGN FLOW RATE. THIS CAUSES EXCESSIVE SPRAY | | POND DRIFT WHICH CAUSES SPRAY POND INVENTORY TO BE DEPLETED FASTER THAN | | DESIGN. UNIT 1 WILL ESTABLISH ADMINISTRATIVE MEASURES TO COUNTER THIS | | CONDITION (WILL MAKE PROCEDURAL CHANGE TO CORRECT THIS PROBLEM BEFORE THE | | END OF 10/21/94) UNTIL A PENDING TECH SPEC CHANGE IS APPROVED TO ALLOW A | | REDUCED AMOUNT OF INVENTORY IN THE SPRAY POND. AS A FURTHER MEASURE THE | | CORRECT ORIFICES ARE PLANNED TO BE INSTALLED TO CORRECT THIS CONDITION IN | | THEIR UPCOMING REFUELING OUTAGE E(SCHEDULED FOR APRIL 1995). | | | | RESIDENT INSPECTOR WILL BE INFORMED BY THE LICENSEE. | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 27935 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: CALVERT CLIFFS REGION: 1 |NOTIFICATION DATE: 10/21/94 | |UNIT: [1] [2] [ ] STATE: MD |NOTIFICATION TIME: 16:45 [ET]| |RX TYPE: [1] CE,[2] CE |EVENT DATE: 10/21/94 | +------------------------------------------------+EVENT TIME: 16:45[EDT]| |NRC NOTIFIED BY: WAYNE LANNING |LAST UPDATE DATE: 10/21/94 | |HQ OPS OFFICER: JOHN MacKINNON +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |GLENN MEYER RDO | |NINF INFORMATION ONLY | | | | | | | | | | | | | | +-----+----------+-------+--------+--------------+--+--------+-----------------+ |UNIT |SCRAM CODE|RX CRIT|INIT PWR| INIT RX MODE |CURR PWR| CURR RX MODE | +-----+----------+-------+--------+-----------------+--------+-----------------+ | 1 | N Y 100 POWER OPERATION | 100 POWER OPERATION | | 2 | N Y 100 POWER OPERATION | 100 POWER OPERATION | | | | | +-----+---------------------------------------------+--------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | ****COMMISSIONERS ASSISTANTS BRIEFING**** | | | | A UNITED STATES AIR FORCE HELICOPTER AT 1211ET 10/21/94 APPROACHED CALVERT | | CLIFFS SITE AND HOVERED IN THE VICINITY OF LICENSEES CONTAINMENT FOR | | SEVERAL MINUTES BEFORE DEPARTING THE SITE. | | | | COMMISSIONER ASSISTANT BRIEFER WAS Mr. FUHRMEISTER (REGION 1). PARTICIPANTS | | IN THE BRIEFING WERE Mr JORDAN & Mr CONGEL (AEOD), Mr. BEECHER (PUBLIC | | AFFAIRS), Mr BANGART (STATE PROGRAMS), Mr UPSHAW (INTERNATIONAL PROGRAMS), | | Mr CHAFFEE (NRR EO), Mr BATES (SECY), Mr CALLAHAN (CONGRESSIONAL AFFAIRS), | | Mr SORENSEN (COMMISSIONER ROGERS ASSISTANT), Mr MCCONNELL (CHAIRMAN SELIN | | ASSISTANT), Ms MCKENNA (COMMISSIONER dePlanque's ASSISTANT), AND Mr LANNING | | (REGION 1). | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 27936 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: FARLEY REGION: 2 |NOTIFICATION DATE: 10/21/94 | |UNIT: [1] [2] [ ] STATE: AL |NOTIFICATION TIME: 17:49 [ET]| |RX TYPE: [1] W-3-LP,[2] W-3-LP |EVENT DATE: 10/21/94 | +------------------------------------------------+EVENT TIME: 16:15[CDT]| |NRC NOTIFIED BY: PHIL CRONE |LAST UPDATE DATE: 10/21/94 | |HQ OPS OFFICER: JOHN MacKINNON +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |CHRIS CHRISTENSEN 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 | | 2 | N Y 100 POWER OPERATION | 100 POWER OPERATION | | | | | +-----+---------------------------------------------+--------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | SELF INITIATED SAFETY ASSESSMENT OF AUXILIARY FEEDWATER SYSTEM FOUND THAT | | FIVE CONNECTIONS TO THE CONDENSATE STORAGE TANK (CST) OF EACH FARLEY UNIT | | DO NOT HAVE MISSILE PROTECTION AS DESCRIBED IN FSAR SECTION 9.2.6.6. ONE | | DRAIN LINE AND THREE INSTRUMENT LINE CONNECTIONS ARE ORIGINAL PLANT DESIGN. | | A VACUUM DEGASSIFIER CONNECTION WAS ADDED TO THE UNIT 1 CST IN 1979 AND | | INCLUDED IN UNIT 2 ORIGINAL PLANT DESIGN. VACUUM DEGASSIFIER WAS NEVER | | FULLY IMPLEMENTED FOR UNIT 2. A PROBABILISTIC RISK ASSESSMENT CALCULATION | | SHOWED THAT IMPACT FOR THE EXPOSED PIPE ON EACH CST IS 3.7E-09 PER YEAR. | | THE RISK TO EITHER CST FROM MISSILE HAZARD IS JUDGED BY THE LICENSEE TO BE | | INSIGNIFICANT. LICENSEE ACTION: UNIT 1 VACUUM DEGASSIFIER IS BEING TAGGED | | OUT, THEREBY REDUCING EXPOSURE TO MISSILE HAZARD TO A SMALL AREA OF PIPE. | | LICENSEE IS LOOKING INTO PERFORMING AN ANALYSIS TO SEE IF A DESIGN CHANGE | | IS NEEDED. | | | | FARLEY HAS A SAFETY RELATED BACKUP SOURCE OF AUXILIARY FEEDWATER WHICH IS | | THEIR SERVICE WATER SYSTEM (SERVICE WATER IS A SAFETY RELATED SYSTEM). | | | | RESIDENT INSPECTOR WAS INFORMED BY THE LICENSEE OF THIS EVENT. | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |GENERAL INFORMATION or OTHER | |EVENT NUMBER: 27937 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |LICENSEE: UNIV OF MISSOURI-ROLLA |NOTIFICATION DATE: 10/21/94 | | CITY: ROLLA REGION: 3 |NOTIFICATION TIME: 18:11 [ET]| | COUNTY: PHELPS STATE: MO |EVENT DATE: 09/23/94 | |LICENSE#: 24-00513-40 AGREEMENT: N |EVENT TIME: 12:00[CDT]| | DOCKET: |LAST UPDATE DATE: 10/21/94 | | +-----------------------------+ | |PERSON ORGANIZATION| | |BRENT CLAYTON RDO | | | | +------------------------------------------------+ | |NRC NOTIFIED BY: RAY BONO | | |HQ OPS OFFICER: JOHN MacKINNON | | +------------------------------------------------+ | |EMERGENCY CLASS: NOT APPLICABLE | | |10 CFR SECTION: | | |BAB2 20.2201(a)(1)(ii) LOST/STOLEN LNM>10X | | | | | | | | | | | | | | +------------------------------------------------+-----------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | MISSING ONE NATURAL URANIUM SLUG | | | | DURING INVENTORY AUDIT LICENSEE FOUND THAT THEY WERE MISSING ONE NATURAL | | URANIUM SLUG OUT OF 1412 SLUGS. THE NATURAL URANIUM SLUG IS USED FOR | | CLASSROOM INSTRUCTION IN THEIR NUCLEAR ENGINEERING CLASSES. THE NATURAL | | URANIUM SLUG WEIGHTS 3.966lbs. THE SLUG IS ENCAPSULATED IN ALUMINUM. THE | | TOTAL CALCULATED ACTIVITY OF THE MISSING SLUG IS 1254uci. LICENSEE THINKS | | THAT THEY MAY HAVE INADVERTENTLY DISPOSED OF THE SLUG/SOMEONE MAY HAVE | | TAKEN IT/OR THEIR INVENTORY CHECK MIGHT BE INCORRECT. LICENSEE IS | | INVESTIGATING THIS EVENT (THIS EVENT IS REQUIRED TO BE REPORTED WITHIN 30 | | DAYS). | | LICENSEE HAS DISCUSSED THIS EVENT WITH REGION 3 PERSONNEL (TOM PLOSKI & | | MARK MITCHELL). | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 27938 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: SEQUOYAH REGION: 2 |NOTIFICATION DATE: 10/21/94 | |UNIT: [ ] [2] [ ] STATE: TN |NOTIFICATION TIME: 23:53 [ET]| |RX TYPE: [1] W-4-LP,[2] W-4-LP |EVENT DATE: 10/21/94 | +------------------------------------------------+EVENT TIME: 22:30[EDT]| |NRC NOTIFIED BY: ROBERT HAYS |LAST UPDATE DATE: 10/21/94 | |HQ OPS OFFICER: DOUG WEAVER +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |CHRIS CHRISTENSEN 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 | M/R N 0 COLD SHUTDOWN | 0 COLD SHUTDOWN | | | | | +-----+---------------------------------------------+--------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | FAILURE OF THE ROD CONTROL SYSTEM OR ROD POSITION INDICATION SYSTEM DURING | | A SURVEILLANCE TEST | | | | WHILE PERFORMING A SURVEILLANCE INSTRUCTION FOR WITHDRAWAL & INSERTION OF | | CONTROL AND SHUTDOWN BANKS AS PART OF A POST MAINTENANCE TEST, CONTROL BANK | | A GROUP I STEP COUNTER DEVIATED BY MORE THAN 2 STEPS FROM THE GROUP II STEP | | COUNTER. PER TECHNICAL SPECIFICATION 3.1.3.3., OPERATORS OPENED THE | | REACTOR TRIP BREAKERS. ALL RODS FULLY INSERTED. THE ACTUAL DEVIATION WAS | | 3 STEPS WHEN THE TRIP BREAKERS WERE OPENED. NO OTHER ABNORMALITIES WERE | | OBSERVED. UNIT 2 REMAINS IN MODE 5. THE TESTING IS ON HOLD PENDING FURTHER | | INVESTIGATION OF THIS INCIDENT. | | | | THE LICENSEE INFORMED THE NRC RESIDENT INSPECTOR. | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 27939 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: BRUNSWICK REGION: 2 |NOTIFICATION DATE: 10/23/94 | |UNIT: [1] [2] [ ] STATE: NC |NOTIFICATION TIME: 08:21 [ET]| |RX TYPE: [1] GE-4,[2] GE-4 |EVENT DATE: 10/23/94 | +------------------------------------------------+EVENT TIME: 07:28[EDT]| |NRC NOTIFIED BY: DAVE JESTER |LAST UPDATE DATE: 10/23/94 | |HQ OPS OFFICER: DOUG WEAVER +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: UNUSUAL EVENT +-----------------------------+ |10 CFR SECTION: |CHRIS CHRISTENSEN RDO | |AAEC 50.72(a)(1)(i) EMERGENCY DECLARED |GARY HOLAHAN EO | |AESF 50.72(b)(2)(ii) ESF ACTUATION |ED SIMMERS FEMA | | | | | | | | | | +-----+----------+-------+--------+--------------+--+--------+-----------------+ |UNIT |SCRAM CODE|RX CRIT|INIT PWR| INIT RX MODE |CURR PWR| CURR RX MODE | +-----+----------+-------+--------+-----------------+--------+-----------------+ | 1 | N Y 100 POWER OPERATION | 100 POWER OPERATION | | 2 | N Y 100 POWER OPERATION | 100 POWER OPERATION | | | | | +-----+---------------------------------------------+--------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | UNUSUAL EVENT BASED ON A TOXIC GAS RELEASE | | | | CHLORINE GAS WAS RELEASED FROM THE #4 EVAPORATOR WHEN A RELIEF LIFTED. THIS | | SYSTEM IS USED TO CHLORINATE THE SERVICE WATER SYSTEM AND IS LOCATED IN THE | | CHLORINATION BUILDING. ONE LICENSEE EMPLOYEE WAS EXPOSED TO THE GAS AND | | WAS TAKEN TO A LOCAL HOSPITAL, ALTHOUGH THE MAN WAS COHERENT AND FELT NO | | ILL EFFECTS. THE CONTROL BUILDING EMERGENCY FILTRATION SYSTEM ISOLATED WHEN | | A SENSOR NEAR THE EVAPORATOR DETECTED THE GAS. THE LEAK WAS ISOLATED | | IMMEDIATELY BY SECURING THE SUPPLY FROM THE CHLORINE TANK CAR. NO GAS WAS | | DETECTED IN THE CONTROL BUILDING AND PLANT OPERATIONS WERE NOT AFFECTED. | | | | THE LICENSEE CHLORINE EMERGENCY RESPONSE TEAM IS TAKING SAMPLES IN THE AREA | | TO CHECK FOR POCKETS OF GAS. THE LICENSEE INFORMED THE NRC RESIDENT | | INSPECTOR. | | | | * * * UPDATE AT 0954 ON 10/23/94 BY JESTER TAKEN BY WEAVER * * * | | THE UNUSUAL EVENT WAS TERMINATED AT 0926 BASED ON NEGATIVE RESULTS OF THE | | SAMPLES TAKEN BY THE CHLORINE EMERGENCY RESPONSE TEAM. THE INDIVIDUAL SENT | | TO THE HOSPITAL HAS RETURNED TO SITE WITH NO ADVERSE AFFECTS. THE CONTROL | | BUILDING VENTILATION SYSTEM HAS BEEN RETURNED TO THE NORMAL MODE. | | HOO NOTIFIED RDO (CHRISTENSEN), EO (HOLAHAN), FEMA (CANUPP). | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 27940 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: SAINT LUCIE REGION: 2 |NOTIFICATION DATE: 10/23/94 | |UNIT: [1] [ ] [ ] STATE: FL |NOTIFICATION TIME: 19:45 [ET]| |RX TYPE: [1] CE,[2] CE |EVENT DATE: 10/23/94 | +------------------------------------------------+EVENT TIME: 19:15[EDT]| |NRC NOTIFIED BY: HARMON |LAST UPDATE DATE: 10/23/94 | |HQ OPS OFFICER: BOB STRANSKY +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |CHRISTENSEN 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 +------------------------------------------------------------------------------+ | POTENTIAL FOR EXCESSIVE BYPASS OF WATER FROM CONTAINMENT SUMP TO AUXILIARY | | BUILDING UNDER ACCIDENT CONDITIONS. | | | | PLANT TESTING AND AN ENGINEERING EVALUATION PERFORMED BY THE LICENSEE HAVE | | DETERMINED THAT EXCESSIVE CONTAINMENT SUMP INVENTORY LOSS TO THE AUXILIARY | | BUILDING COULD OCCUR DURING CERTAIN ACCIDENT CONDITIONS. SPECIFICALLY, A | | 1 1/2" RELIEF VALVE IN A LOW-PRESSURE PORTION OF PIPING FOR THE NaOH | | ADDITION SUBSYSTEM COULD LIFT DUE TO OVER PRESSURIZATION DURING POSTULATED | | ACCIDENT CONDITIONS. SPECIFICALLY, IF ONE OF TWO LPSI PUMPS DID NOT START | | DURING AN ACCIDENT, THE SUCTION PIPING, INCLUDING THE NaOH ADDITION | | SUBSYSTEM, FOR THAT TRAIN WOULD BECOME PRESSURIZED DUE TO REACTOR COOLANT | | SYSTEM AND CONTAINMENT BACK PRESSURE, CAUSING THE RELIEF VALVE ON THE NaOH | | ADDITION SUBSYSTEM FOR THAT TRAIN TO LIFT. THE RELIEF VALVES (ONE PER | | TRAIN) FOR THE NaOH ADDITION SUBSYSTEMS ARE LOCATED IN PENETRATION ROOMS IN | | THE PLANT AUXILIARY BUILDING. | | | | THE LICENSEE HAS ISOLATED BOTH OF THE NaOH ADDITION SUBSYSTEMS, AND HAS | | ENTERED 72 HOUR TECHNICAL SPECIFICATION LIMITING CONDITION FOR OPERATION | | 3.6.2.2 DUE TO THE INOPERABILITY OF THE NaOH ADDITION SUBSYSTEMS. THE | | LICENSEE IS INVESTIGATING SEVERAL OPTIONS, INCLUDING GAGGING THE RELIEF | | VALVES OR DEVELOPING INSTRUCTIONS TO CLOSE THE ISOLATION VALVES FOR THE | | NaOH ADDITION SUBSYSTEM ON AN IDLE ECCS TRAIN DURING AN ACCIDENT. THE RI | | HAS BEEN INFORMED. | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 27941 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: MONTICELLO REGION: 3 |NOTIFICATION DATE: 10/24/94 | |UNIT: [1] [ ] [ ] STATE: MN |NOTIFICATION TIME: 00:46 [ET]| |RX TYPE: [1] GE-3 |EVENT DATE: 10/23/94 | +------------------------------------------------+EVENT TIME: 23:15[CDT]| |NRC NOTIFIED BY: KEVIN PEDERSON |LAST UPDATE DATE: 10/24/94 | |HQ OPS OFFICER: DOUG WEAVER +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |BRENT CLAYTON 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 Y 12 STARTUP | 12 POWER OPERATION | | | | | | | | | +-----+---------------------------------------------+--------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | HPCI STEAM SUPPLY ISOLATES DURING HPCI TESTING | | | | WHILE PERFORMING AN OPERATIONAL TEST OF THE HPCI SYSTEM, A GROUP IV | | ISOLATION WAS RECEIVED BASED ON A HPCI STEAM LINE HIGH D/P. A GROUP IV | | ISOLATION SHUTS THE STEAM SUPPLY VALVES TO THE HPCI SYSTEM (VALVES MO-2034 | | & MO-2035). THE LICENSEE DOES NOT KNOW THE REASON FOR THE ISOLATION AND IS | | INVESTIGATING. | | | | THE PLANT IS IN A 14 DAY LCO BASED ON HPCI BEING INOPERABLE. THE PLANT IS | | AT 12% POWER, BUT THE TURBINE IS NOT ON LINE. THE LICENSEE WILL INFORM THE | | NRC RESIDENT INSPECTOR. | +------------------------------------------------------------------------------+