U.S. Nuclear Regulatory Commission Operations Center Event Reports For 06/13/95 - 06/14/95 ** EVENT NUMBERS ** 28857 28934 28935 28936 !!!!!!!!! THIS EVENT HAS BEEN RETRACTED. THIS EVENT HAS BEEN RETRACTED !!!!!!! +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 28857 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: CLINTON REGION: 3 |NOTIFICATION DATE: 05/27/95 | |UNIT: [1] [ ] [ ] STATE: IL |NOTIFICATION TIME: 01:18 [ET]| |RX TYPE: [1] GE-6 |EVENT DATE: 05/26/95 | +------------------------------------------------+EVENT TIME: 22:30[CDT]| |NRC NOTIFIED BY: SCHOTTEL |LAST UPDATE DATE: 06/13/95 | |HQ OPS OFFICER: BOB STRANSKY +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |HOLT 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 Y 100 POWER OPERATION | 100 POWER OPERATION | | | | | | | | | +-----+---------------------------------------------+--------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | LOOSE BATTERY TERMINAL CONNECTION COULD HAVE PREVENTED PROPER OPERATION OF | | HIGH PRESSURE CORE SPRAY (HPCS) SYSTEM. | | | | DURING PERFORMANCE OF SURVEILLANCE "CPS 9382.02" (BATTERY ELECTROLYTE | | MEASUREMENT) ON THE DIVISION 4 BATTERY, TECHNICIANS NOTICED A LOOSE | | CONNECTION BETWEEN THE CELL #1 TERMINAL AND THE CABLE TO THE MOTOR CONTROL | | CENTER. THIS LOOSE CONNECTION COULD HAVE PREVENTED THE PROPER OPERATION OF | | THE HPCS SYSTEM. THE LOOSE CONNECTION WAS REPAIRED WHEN TECHNICIANS | | TIGHTENED THE MOUNTING BOLTS TO THE PROPER TORQUE. THE LICENSEE IS | | INVESTIGATING THE CAUSE OF THE LOOSE CONNECTION. | | | | FOLLOWING DISCOVERY OF THE LOOSE CONNECTION, THE LICENSEE CHECKED THE OTHER | | DIVISIONAL BATTERIES FOR LOOSE CONNECTIONS, BUT NONE WERE FOUND. THE | | LICENSEE HAS NOTIFIED THE NRC RESIDENT INSPECTOR. | | | | ***RETRACTION 2/13/95 @ 12:01 FROM TIEDEMANN TAKEN BY SEBROSKY *** | | THE LICENSEE IS RETRACTING THIS EVENT. FSAR SECTION 8.3.2.1.1 STATES THAT | | ONLY DIVISION 1, DIVISION 2, AND DIVISION 3 125 VOLT DC SUBSYSTEMS ARE | | REQUIRED TO BE CONSIDERED FOR SAFE SHUTDOWN ANALYSIS OF THE PLANT. THE | | LICENSEE HAS CONCLUDED FROM THIS STATEMENT THAT THE DIVISION 4 BATTERY IS | | EXEMPT FROM THE SAFE SHUTDOWN ANALYSIS AND THAT THIS IS NOT A REPORTABLE | | EVENT. | | | | THE LICENSEE WILL INFORM THE RESIDENT INSPECTOR. HOO NOTIFIED R3DO(MILLER). | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 28934 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: OCONEE REGION: 2 |NOTIFICATION DATE: 06/12/95 | |UNIT: [ ] [ ] [3] STATE: SC |NOTIFICATION TIME: 16:08 [ET]| |RX TYPE: [1] B&W-L-LP,[2] B&W-L-LP,[3] B&W-L-LP |EVENT DATE: 06/12/95 | +------------------------------------------------+EVENT TIME: 15:29[EDT]| |NRC NOTIFIED BY: OTTO KOHLER |LAST UPDATE DATE: 06/13/95 | |HQ OPS OFFICER: JOSEPH SEBROSKY +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |MILTON SHYMLOCK RDO | |AMED 50.72(b)(2)(v) OFFSITE MEDICAL | | | | | | | | | | | | | | +-----+----------+-------+--------+--------------+--+--------+-----------------+ |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 +------------------------------------------------------------------------------+ | A POTENTIALLY CONTAMINATED INDIVIDUAL WAS TRANSPORTED BY AMBULANCE TO THE | | HOSPITAL. | | | | THE WORKER WAS WORKING IN THE REACTOR BUILDING FOR UNIT 3 WHEN HE SUFFERED | | AN APPARENT HEART ATTACK. CPR WAS PERFORMED ON THE INDIVIDUAL AT THE SITE | | AND THE INDIVIDUAL WAS TRANSPORTED TO THE OCONEE MEMORIAL HOSPITAL. | | | | THE LICENSEE HAS INFORMED THE RESIDENT INSPECTOR. | | | | ** UPDATE @ 1009 EDT ON 6/13/95 ***FROM LICENSEE: KOHLER BY:McGINTY ** | | THE POTENTIALLY CONTAMINATED INDIVIDUAL TRANSPORTED TO OCONEE MEMORIAL | | HOSPITAL WAS FOUND TO HAVE NO CONTAMINATION ON HIS BODY. FIXED | | CONTAMINATION LEVELS OF APPROXIMATELY 300 COUNTS WERE FOUND ON THE | | PROTECTIVE CLOTHING HE WORE ENROUTE TO THE HOSPITAL AND A SMALL AREA OF THE | | STRETCHER USED DURING THE TRANSPORT WAS FOUND CONTAMINATED TO THE SAME | | LEVEL. THE STRETCHER AND THE CLOTHING HAVE BEEN RETURNED TO THE SITE. THE | | LICENSEE HAS INFORMED THE RESIDENT INSPECTOR. HOO NOTIFIED THE R2DO | | (SHYMLOCK). | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 28935 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: PALISADES REGION: 3 |NOTIFICATION DATE: 06/13/95 | |UNIT: [1] [ ] [ ] STATE: MI |NOTIFICATION TIME: 06:51 [ET]| |RX TYPE: [1] CE |EVENT DATE: 06/13/95 | +------------------------------------------------+EVENT TIME: 05:51[EDT]| |NRC NOTIFIED BY: STEFFLER |LAST UPDATE DATE: 06/13/95 | |HQ OPS OFFICER: TIM McGINTY +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |LEWIS MILLER RDO | |DDDD 73.71 UNSPECIFIED PARAGRAPH | | | | | | | | | | | | | | +-----+----------+-------+--------+--------------+--+--------+-----------------+ |UNIT |SCRAM CODE|RX CRIT|INIT PWR| INIT RX MODE |CURR PWR| CURR RX MODE | +-----+----------+-------+--------+-----------------+--------+-----------------+ | 1 | N N 0 REFUELING | 0 REFUELING | | | | | | | | | +-----+---------------------------------------------+--------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | POTENTIAL FOR UNAUTHORIZED ENTRY INTO THE PROTECTED AREA. IMMEDIATE | | COMPENSATORY MEASURES TAKEN UPON DISCOVERY. THE LICENSEE WILL INFORM THE | | RESIDENT INSPECTOR. | | | | SEE HOO LOG FOR DETAILS. | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 28936 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: MILLSTONE REGION: 1 |NOTIFICATION DATE: 06/13/95 | |UNIT: [ ] [2] [ ] STATE: CT |NOTIFICATION TIME: 10:52 [ET]| |RX TYPE: [1] GE-3,[2] CE,[3] W-4-LP |EVENT DATE: 06/13/95 | +------------------------------------------------+EVENT TIME: 10:30[EDT]| |NRC NOTIFIED BY: NELSON |LAST UPDATE DATE: 06/13/95 | |HQ OPS OFFICER: TIM McGINTY +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |JENNY JOHANSEN RDO | |AINB 50.72(b)(2)(iii)(B) POT RHR INOP | | | | | | | | | | | | | | +-----+----------+-------+--------+--------------+--+--------+-----------------+ |UNIT |SCRAM CODE|RX CRIT|INIT PWR| INIT RX MODE |CURR PWR| CURR RX MODE | +-----+----------+-------+--------+-----------------+--------+-----------------+ | | | | | 2 | N N 0 COLD SHUTDOWN | 0 COLD SHUTDOWN | | | | | +-----+---------------------------------------------+--------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | PORV BLOCK VALVES POTENTIALLY SUSCEPTIBLE TO THERMAL LOCKING UNDER CERTAIN | | CONDITIONS. | | | | THE LICENSEE HAS BEEN PERFORMING AN ENGINEERING EVALUATION TO DETERMINE THE | | SUSCEPTIBILITY OF VALVES TO THERMAL LOCKING. THE EVALUATION DETERMINED | | THAT THE BLOCK VALVES FOR THE PRESSURIZER POWER OPERATED RELIEF VALVES | | (PORV's) ARE POTENTIALLY SUSCEPTIBLE TO THERMAL LOCKING UNDER CERTAIN | | CIRCUMSTANCES. | | | | SPECIFICALLY, IF THE PORV BLOCK VALVES WERE CLOSED (BASED ON EXISTING | | CONDITIONS AND PER PROCEDURES) AND A SUBSEQUENT COOLDOWN WERE PERFORMED, | | THE BLOCK VALVES MAY EXPERIENCE THERMAL LOCKING. UNDER THESE CONDITIONS, | | IF AN EVENT THEN OCCURRED WHICH REQUIRED THE OPENING OF THE BLOCK VALVES, | | THE OPERATORS WOULD POSSIBLY BE UNABLE TO OPEN THE BLOCK VALVES FOR THE | | PURPOSES OF MITIGATING THE CONSEQUENCES OF THE EVENT. | | | | THE LICENSEE HAS BEEN PERFORMING A COMPREHENSIVE EVALUATION OF THE THERMAL | | BINDING ISSUE. THE CALLER DID NOT HAVE SPECIFIC INFORMATION IMMEDIATELY | | AVAILABLE REGARDING THE BLOCK VALVE CHARACTERISTICS OR THE ENGINEERING | | EVALUATION. WITH THE PLANT IN COLD SHUTDOWN, THE ISSUE IS NOT AN IMMEDIATE | | CONCERN. THE LICENSEE WILL CONTINUE TO INVESTIGATE THE PROBLEM AND | | DETERMINE CORRECTIVE ACTIONS PRIOR TO HEATING UP. | | | | THE LICENSEE HAS INFORMED THE NRC RESIDENT INSPECTOR, AND THE STATE AND | | LOCAL GOVERNMENTS. | +------------------------------------------------------------------------------+