U.S. Nuclear Regulatory Commission Operations Center Event Reports For 07/30/96 - 07/31/96 ** EVENT NUMBERS ** 30805 30806 30807 30808 30809 +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 30805 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: NORTH ANNA REGION: 2 |NOTIFICATION DATE: 07/30/96 | |UNIT: [1] [2] [ ] STATE: VA |NOTIFICATION TIME: 06:29 [ET]| |RX TYPE: [1] W-3-LP,[2] W-3-LP |EVENT DATE: 07/30/96 | +------------------------------------------------+EVENT TIME: 06:18[EDT]| |NRC NOTIFIED BY: MICHAEL BECKER |LAST UPDATE DATE: 07/30/96 | |HQ OPS OFFICER: JOHN MacKINNON +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |MILT SHYMLOCK RDO | |AARC 50.72(b)(1)(v) OTHER ASMT/COMM INOP | | | | | | | | | | | | | | +-----+----------+-------+--------+--------------+--+--------+-----------------+ |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 +------------------------------------------------------------------------------+ | LOSS OF DATA LINK TO CORPORATE AND LOCAL EMERGENCY OPERATIONS FACILITIES | | | | AT 2335 EDT ON 07/29/96, THE DATA LINK TO THE LOCAL EMERGENCY OPERATIONS | | FACILITY (LEOF) WAS LOST DUE TO A LOSS OF CONSTRUCTION POWER. A | | THUNDERSTORM CAUSED THE LOSS OF THE CONSTRUCTION POWER. CONSTRUCTION POWER | | WAS RESTORED AT 0320 EDT, BUT THE DATA LINK BETWEEN THE LEOF AND THE SAFETY | | PARAMETER DISPLAY SYSTEM COULD NOT BE RESTORED. | | | | AT 0518 EDT, THE DATA LINK BETWEEN THE CORPORATE EMERGENCY RESPONSE | | FACILITY (CEOF) AND THE SAFETY PARAMETER DISPLAY SYSTEM WAS LOST FOR AN | | UNKNOWN REASON. | | | | THE LOSS OF THE DATA LINK FOR THE CEOF AND LEOF FOR MORE THAN ONE HOUR IS | | CONSIDERED A MAJOR LOSS OF ACCIDENT ASSESSMENT PER VIRGINIA POWER | | ADMINISTRATION PROCEDURE 2802. THE LICENSEE IS ATTEMPTING TO RESTORE THE | | DATA LINK FOR THE CEOF AND LEOF. | | | | THE NRC RESIDENT INSPECTOR WILL BE INFORMED BY THE LICENSEE OF THIS EVENT. | | | | ****UPDATE @ 0824 EDT ON 07/30/96 FROM JOHNSTONE TAKEN BY MACKINNON**** | | | | DATE LINK TO CEOF WAS RESTORED AT 0653 EDT, AND THE DATE LINK TO THE LEOF | | WAS RESTORED AT 0714 EDT. | | | | THE NRC RESIDENT INSPECTOR WILL BE INFORMED BY THE LICENSEE. THE NRC | | OPERATIONS CENTER NOTIFIED THE R2DO (SHYMLOCK). | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 30806 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: MAINE YANKEE REGION: 1 |NOTIFICATION DATE: 07/30/96 | |UNIT: [1] [ ] [ ] STATE: ME |NOTIFICATION TIME: 13:42 [ET]| |RX TYPE: [1] CE |EVENT DATE: 07/30/96 | +------------------------------------------------+EVENT TIME: 13:00[EDT]| |NRC NOTIFIED BY: JERRY MABEN |LAST UPDATE DATE: 07/30/96 | |HQ OPS OFFICER: RUDY KARSCH +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |JOHN KINNEMAN 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 N 0 COLD SHUTDOWN | 0 COLD SHUTDOWN | | | | | | | | | +-----+---------------------------------------------+--------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | IN RESPONSE TO A QUESTION BY THE INDEPENDENT SAFETY ASSESSMENT TEAM, THE | | LICENSEE DETERMINED THAT THREE INSTRUMENTATION LOOPS MIGHT NOT MEET | | ENVIRONMENTAL QUALIFICATION (EQ) REQUIREMENTS. | | | | THE INSTRUMENT LOOPS AFFECTED BY THE EQ ISSUE INCLUDE ALL THREE STEAM | | GENERATOR LEVEL CHANNELS, BOTH CHANNELS OF PRIMARY INVENTORY TRENDING | | (REACTOR VESSEL LEVEL), AND SEVERAL CONTAINMENT INTEGRITY VALVE POSITION | | INDICATION LOOPS. SOME OF THE ELECTRICAL CABLES AND CABLE CONNECTORS MIGHT | | NOT BE CAPABLE OF WITHSTANDING HARSH POST ACCIDENT CONDITIONS. | | | | THE LICENSEE INFORMED THE NRC RESIDENT INSPECTOR. | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 30807 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: HADDAM NECK REGION: 1 |NOTIFICATION DATE: 07/30/96 | |UNIT: [1] [ ] [ ] STATE: CT |NOTIFICATION TIME: 14:20 [ET]| |RX TYPE: [1] W-4-LP |EVENT DATE: 07/27/96 | +------------------------------------------------+EVENT TIME: 04:00[EDT]| |NRC NOTIFIED BY: ROY BROWN |LAST UPDATE DATE: 07/30/96 | |HQ OPS OFFICER: RUDY KARSCH +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |JOHN KINNEMAN RDO | |ADAS 50.72(b)(2)(i) DEG/UNANALYZED COND | | | | | | | | | | | | | | +-----+----------+-------+--------+--------------+--+--------+-----------------+ |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 +------------------------------------------------------------------------------+ | AFTER A REVIEW OF LOCAL LEAK RATE DATA, THE LICENSEE DETERMINED THAT THE | | OUTBOARD VALVE ON A PENETRATION EXCEEDED THE 0.6 La LIMIT. | | | | CONTAINMENT ISOLATION VALVE VS-SOV-12-1, A PENETRATION OUTBOARD VALVE, | | FAILED ITS LEAK RATE TEST. THE LEAK RATE EXCEEDED THE 0.6 La LIMIT. THE | | LICENSEE WILL REPLACE OR REPAIR THE DEFECTIVE VALVE. | | | | THE LICENSEE INFORMED THE NRC RESIDENT INSPECTOR. | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 30808 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: PALISADES REGION: 3 |NOTIFICATION DATE: 07/30/96 | |UNIT: [1] [ ] [ ] STATE: MI |NOTIFICATION TIME: 14:47 [ET]| |RX TYPE: [1] CE |EVENT DATE: 07/30/96 | +------------------------------------------------+EVENT TIME: 14:30[EDT]| |NRC NOTIFIED BY: ROBERT VINCENT |LAST UPDATE DATE: 07/30/96 | |HQ OPS OFFICER: RUDY KARSCH +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |B.J. HOLT 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 +------------------------------------------------------------------------------+ | RADIATION MONITORS FOR THE CONTROL ROOM AIR HAVE A NON-CONSERVATIVE ALARM | | SETPOINT. | | | | THE CONTINUOUS AIR MONITOR (CAM) FOR THE CONTROL ROOM ENVELOPE WAS | | DISCOVERED TO HAVE A NON-CONSERVATIVE ALARM SETPOINT. THE SETPOINT WAS | | BASED ON PARTICULATE ACTIVITY RATHER THAN NOBLE GAS ACTIVITY AS REQUIRED. | | THE CAM IS USED TO SIGNAL THE NEED FOR MANUAL OPERATOR ACTION TO SHIFT | | CONTROL ROOM HVAC TO THE EMERGENCY MODE (AIR RECIRCULATION) DURING CERTAIN | | EVENTS. A DELAY IN SHIFTING TO THE RECIRCULATION MODE DUE TO A LATE OR | | INOPERABLE CAM ALARM COULD INCREASE OPERATOR DOSES. THIS COULD POTENTIALLY | | RESULT IN THE GDC-19 LIMIT FOR OPERATOR DOSES BEING EXCEEDED. THE CONTROL | | ROOM (CR) HVAC SYSTEM REMAINS OPERABLE. THE CR HVAC HAS BEEN SHIFTED INTO | | THE RECIRCULATION MODE UNTIL THE CAM SETPOINT CAN BE RESET OR UNTIL THE CAM | | CAN BE REPLACED WITH A MORE SENSITIVE UNIT. | | | | THE LICENSEE INFORMED THE NRC RESIDENT INSPECTOR. | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 30809 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: MILLSTONE REGION: 1 |NOTIFICATION DATE: 07/30/96 | |UNIT: [ ] [ ] [3] STATE: CT |NOTIFICATION TIME: 17:10 [ET]| |RX TYPE: [1] GE-3,[2] CE,[3] W-4-LP |EVENT DATE: 07/30/96 | +------------------------------------------------+EVENT TIME: 16:50[EDT]| |NRC NOTIFIED BY: LOU PALONE |LAST UPDATE DATE: 07/30/96 | |HQ OPS OFFICER: RUDY KARSCH +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |JOHN KINNEMAN 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 | +-----+----------+-------+--------+-----------------+--------+-----------------+ | | | | | | | | | 3 | N N 0 COLD SHUTDOWN | 0 COLD SHUTDOWN | +-----+---------------------------------------------+--------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | THE LICENSEE HAS DISCOVERED AN UNANALYZED DILUTION FLOW PATH COMPLICATED BY | | A DESIGN CHANGE AND AN UNANALYZED MAKE-UP PUMP CONFIGURATION. THE ANALYSIS | | DOES NOT TAKE INTO ACCOUNT RUNNING TWO MAKE-UP PUMPS. THE DILUTION PATH | | WILL BE TAGGED FOR ISOLATION. | | | | THE LICENSEE INFORMED THE NRC RESIDENT INSPECTOR. | +------------------------------------------------------------------------------+