U.S. Nuclear Regulatory Commission Operations Center Event Reports For 10/17/95 - 10/18/95 ** EVENT NUMBERS ** 29376 29466 29467 29468 !!!!!!!!! THIS EVENT HAS BEEN RETRACTED. THIS EVENT HAS BEEN RETRACTED !!!!!!! +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 29376 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: MILLSTONE REGION: 1 |NOTIFICATION DATE: 09/26/95 | |UNIT: [ ] [2] [ ] STATE: CT |NOTIFICATION TIME: 18:36 [ET]| |RX TYPE: [1] GE-3,[2] CE,[3] W-4-LP |EVENT DATE: 09/26/95 | +------------------------------------------------+EVENT TIME: 18:24[EDT]| |NRC NOTIFIED BY: TED DUBAY |LAST UPDATE DATE: 10/17/95 | |HQ OPS OFFICER: LEIGH TROCINE +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |CLIFFORD ANDERSON 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 Y 100 POWER OPERATION | 100 POWER OPERATION | | | | | +-----+---------------------------------------------+--------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | FAILURE TO ADEQUATELY PROTECT THE STRAINER FROM A POSTULATED APPENDIX 'R' | | FIRE OR DESIGN BASIS FLOOD IN THE INTAKE STRUCTURE | | | | IF THERE WAS A POSTULATED APPENDIX 'R' FIRE OR DESIGN BASIS FLOOD IN THE | | INTAKE STRUCTURE (WHERE THE SERVICE WATER PUMPS ARE LOCATED), THE LICENSEE | | HAS ANALYZED AND TAKEN ACTIONS TO PROTECT THE SERVICE WATER PUMPS. THE | | SERVICE WATER PUMPS DISCHARGE INTO A STRAINER WHICH THEN GOES OUT TO THE | | SYSTEM. IT HAS BEEN DETERMINED THAT THE STRAINER HAS NOT BEEN ADEQUATELY | | PROTECTED. | | | | IF THE SERVICE WATER PUMPS WERE TO BE LOST IN A POSTULATED APPENDIX R FIRE, | | SERVICE WATER COULD BE RESTORED BY THE INSTALLATION OF THE SPARE SERVICE | | WATER PUMP IN THE WAREHOUSE. HOWEVER, THERE IS NOT A SPARE MOTOR FOR THE | | TOP OF THE STAINER WHICH KEEPS IT FROM CLOGGING. IN ADDITION, IF THERE | | WAS A DESIGN BASIS FLOOD, THE LICENSEE COULD PROTECT ONE OF THE SERVICE | | WATER PUMPS FROM GETTING WET BY PLACING A CAN OVER TOP OF IT. HOWEVER, THE | | STRAINER IS NOT PROTECTED FROM THIS POSTULATED THREAT. THE LICENSEE DOES | | NOT HAVE DOCUMENTATION THAT THIS HAS BEEN REVIEWED. | | | | AS A RESULT, THE LICENSEE PLANS TO INCORPORATE AN EXISTING MAINTENANCE | | PROCEDURE FOR MANUALLY ROTATING THE STRAINER BACKWASH SHAFT WITH A STRAP | | WRENCH INTO THE APPENDIX 'R' AND FLOODING PROCEDURES. THE LICENSEE IS ALSO | | CONSIDERING THE POSSIBILITY OF GETTING A SPARE STRAINER MOTOR. | | | | THE LICENSEE NOTIFIED THE STATE AND LOCAL OFFICIALS AND THE NRC RESIDENT | | INSPECTOR. | | | | * * UPDATE AT 08:13 ON OCTOBER 17, 1995, FROM BATES ENTERED BY JOLLIFFE * * | | | | THE LICENSEE DESIRES TO RETRACT THIS EVENT SINCE THERE ARE NO 10 CFR PART | | 50, APPENDIX R, REPORTING REQUIREMENTS IN THE PLANT TECHNICAL | | SPECIFICATIONS OR THE PLANT UFSAR AND SINCE THE SERVICE WATER PUMP | | INSTALLATION MEETS THE PLANT TECHNICAL SPECIFICATION DESIGN FLOOD | | PROTECTION REQUIREMENTS. | | | | THE LICENSEE WILL INFORM THE NRC RESIDENT INSPECTOR. THE HOO NOTIFIED THE | | R1DO (BORES). | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 29466 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: TURKEY POINT REGION: 2 |NOTIFICATION DATE: 10/17/95 | |UNIT: [3] [ ] [ ] STATE: FL |NOTIFICATION TIME: 05:43 [ET]| |RX TYPE: [3] W-3-LP,[4] W-3-LP |EVENT DATE: 10/17/95 | +------------------------------------------------+EVENT TIME: 04:49[EDT]| |NRC NOTIFIED BY: FRANK SOENS |LAST UPDATE DATE: 10/17/95 | |HQ OPS OFFICER: DICK JOLLIFFE +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |THOMAS PEEBLES RDO | |ARPS 50.72(b)(2)(ii) RPS ACTUATION | | |AESF 50.72(b)(2)(ii) ESF ACTUATION | | | | | | | | | | | +-----+----------+-------+--------+--------------+--+--------+-----------------+ |UNIT |SCRAM CODE|RX CRIT|INIT PWR| INIT RX MODE |CURR PWR| CURR RX MODE | +-----+----------+-------+--------+-----------------+--------+-----------------+ | 3 | M/R Y 100 POWER OPERATION | 0 HOT STANDBY | | | | | | | | | +-----+---------------------------------------------+--------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | - MANUAL TRIP FROM 100% DUE TO 4 DROPPED CONTROL RODS FOR UNKNOWN REASONS - | | | | AT 04:49, WITH UNIT 3 AT 100% POWER, CONTROL ROOM OPERATORS RECEIVED A ROD | | CONTROL URGENT FAILURE ANNUNCIATOR ALARM DUE TO 4 CONTROL RODS DROPPING | | INTO THE CORE FOR UNKNOWN REASONS. NO TESTING OR MAINTENANCE ACTIVITIES | | WERE OCCURRING AT THE TIME. | | | | CONTROL ROOM OPERATORS MANUALLY TRIPPED UNIT 3. ALL CONTROL RODS INSERTED | | COMPLETELY. UNIT 3 IS DUMPING STEAM TO THE ATMOSPHERE AND IS STABLE IN | | MODE 3 (HOT SHUTDOWN). | | | | THE LICENSEE IS INVESTIGATING THE CAUSE OF THE DROPPED CONTROL RODS. | | | | THE LICENSEE INFORMED THE NRC RESIDENT INSPECTOR. | | | | * * UPDATE AT 06:27 ON OCTOBER 17, 1995, FROM SOENS ENTERED BY JOLLIFFE * * | | | | FOLLOWING THE MANUAL REACTOR TRIP, THE AUXILIARY FEEDWATER SYSTEM | | AUTOMATICALLY STARTED AS DESIGNED. | | | | THE LICENSEE INFORMED THE NRC RESIDENT INSPECTOR. THE HOO NOTIFIED THE | | R2DO (PEEBLES). | | | | * * UPDATE AT 17:34 ON OCTOBER 17, 1995, FROM KNORR TAKEN BY TROCINE * * | | | | THE LICENSEE'S INVESTIGATION DETERMINED THAT AN INADVERTENT HALON ACTUATION | | OCCURRED IN THE CABLE SPREADING ROOM AT APPROXIMATELY 16:30 ON OCTOBER 16, | | 1995. (APPARENTLY, MAINTENANCE WHICH INVOLVED THE ISOLATION OF THE HALON | | SYSTEM WAS BEING PERFORMED ON THE DETECTION SYSTEM IN THE CABLE SPREADING | | ROOM.) ONLY ONE OF TWO HALON BOTTLES INADVERTENTLY DISCHARGED. A FIRE | | WATCH WAS IMMEDIATELY ESTABLISHED IN ACCORDANCE WITH STATION REQUIREMENTS. | | | | TO VENT THE ROOM OF HALON, THE DOORS WERE LEFT OPEN AND REMAINED OPEN | | BECAUSE OF CONCERN ABOUT POTENTIAL FOR THE SECOND BOTTLE OF HALON TO | | DISCHARGE. THE OPEN DOORS CAUSED EXCESSIVE HUMIDITY IN THE ROOM. MOISTURE | | COLLECTED ON THE COILS OF AN AIR CONDITIONING UNIT IN THE CABLE SPREADING | | ROOM, AND A VERY SMALL AMOUNT OF WATER FROM THE OVERFLOW OF A CONDENSATION | | PAN ON THE AIR CONDITIONING UNIT WAS FOUND TO HAVE LEAKED ONTO CONTROL | | CARDS IN THE ROD CONTROL CABINETS IN THE ROOM BELOW. | | | | DURING FURTHER INVESTIGATION OF THE HALON ACTUATION, THE LICENSEE | | DISCOVERED THAT THE SECOND HALON BOTTLE DID NOT DISCHARGE BECAUSE A CHECK | | VALVE HAD BEEN INSTALLED INCORRECTLY. IT APPEARED THAT THE CHECK VALVE HAD | | BEEN INSTALLED INCORRECTLY SINCE THE ORIGINAL APPENDIX 'R' INSTALLATION. | | | | THE UNIT IS CURRENTLY IN MODE 3, AND A RESTART DATE HAS NOT YET BEEN | | DETERMINED. THE LICENSEE HAS NOTIFIED THE NRC RESIDENT INSPECTOR. THE NRC | | OPERATIONS CENTER NOTIFIED THE R2DO (POTTER). | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 29467 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: SOUTH TEXAS REGION: 4 |NOTIFICATION DATE: 10/17/95 | |UNIT: [ ] [2] [ ] STATE: TX |NOTIFICATION TIME: 15:05 [ET]| |RX TYPE: [1] W-4-LP,[2] W-4-LP |EVENT DATE: 10/10/95 | +------------------------------------------------+EVENT TIME: 04:39[CDT]| |NRC NOTIFIED BY: WALT SMITH |LAST UPDATE DATE: 10/17/95 | |HQ OPS OFFICER: LEIGH TROCINE +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |PHIL HARRELL RDO | |NLTR LICENSEE 24 HR REPORT | | | | | | | | | | | | | | +-----+----------+-------+--------+--------------+--+--------+-----------------+ |UNIT |SCRAM CODE|RX CRIT|INIT PWR| INIT RX MODE |CURR PWR| CURR RX MODE | +-----+----------+-------+--------+-----------------+--------+-----------------+ | | | | | 2 | N N 0 REFUELING | 0 REFUELING | | | | | +-----+---------------------------------------------+--------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | FAILURE TO COMPLY WITH A TECHNICAL SPECIFICATION ACTION STATEMENT DURING | | THE 'C' TRAIN ELECTRICAL OUTAGE | | | | A PLANNED POWER OUTAGE REMOVED BOTH CLASS AC AND DC POWER FROM THE 'C' | | TRAIN COMPONENTS AT 18:18 CDT ON OCTOBER 7, 1995. THE DC POWER WAS | | RESTORED AT 04:39 CDT ON OCTOBER 9, 1995, AND THE AC POWER WAS RESTORED AT | | 01:00 CDT ON OCTOBER 10, 1995. THIS WAS NOT IN COMPLIANCE WITH ACTION | | STATEMENT 27 OF TECHNICAL SPECIFICATION 3.3.2.10.A WHICH REQUIRED THE POWER | | SUPPLIES TO BE RESTORED WITHIN 48 HOURS. | | | | THE LICENSEE IDENTIFIED A DISCREPANCY IN THE ACTION STATEMENTS FOR | | TECHNICAL SPECIFICATIONS 3.7.7 AND 3.3.2.10.A. THE ACTION STATEMENT FOR | | TECHNICAL SPECIFICATION 3.7.7 REQUIRES THAT IF ONE TRAIN IS INOPERABLE | | WHILE IN MODES 5 OR 6, THE INOPERABLE TRAIN IS REQUIRED TO BE RESTORED | | WITHIN 7 DAYS. HOWEVER, TECHNICAL SPECIFICATION 3.3.2.10.A REQUIRES THAT | | IF THE ACTUATION CIRCUIT FOR THAT TRAIN IS INOPERABLE, IT IS REQUIRED TO BE | | RESTORED WITHIN 48 HOURS. | | | | THE LICENSEE HAS NOTIFIED THE NRC RESIDENT INSPECTOR. | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 29468 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: PEACH BOTTOM REGION: 1 |NOTIFICATION DATE: 10/18/95 | |UNIT: [ ] [3] [ ] STATE: PA |NOTIFICATION TIME: 04:22 [ET]| |RX TYPE: [2] GE-4,[3] GE-4 |EVENT DATE: 10/18/95 | +------------------------------------------------+EVENT TIME: 03:45[EDT]| |NRC NOTIFIED BY: ROBERT FISHER |LAST UPDATE DATE: 10/18/95 | |HQ OPS OFFICER: RUDY KARSCH +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |ROBERT BORES 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 | +-----+----------+-------+--------+-----------------+--------+-----------------+ | | | | | 3 | N Y 27 POWER OPERATION | 27 POWER OPERATION | | | | | +-----+---------------------------------------------+--------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | TWENTY-FOUR HOUR SHUTDOWN LCO DUE TO INOPERABLE CONTROL RODS. | | | | CONTROL ROD 14-39 IS INOPERABLE, INSERTED AND BLOCKED FOR REPAIR. CONTROL | | ROD TWO BY TWO ARRAY (26-47, 26-51, 30-47 AND 30-51) DOES NOT MEET TECH | | SPEC REQUIREMENT 3.3.C.2 FOR AVERAGE SCRAM INSERTION TIMES AT THE 5% | | INSERTION MARK (TIME BETWEEN STEP 48 AND 46). CONTROL ROD 26-51 IS TO BE | | INSERTED AND BLOCKED TO CORRECT THE PROBLEM. TECH SPEC 3.3.E REQUIRES | | SHUTDOWN WITHIN 24 HOURS DUE TO THE TWO BY TWO ARRAY PROBLEM. THE | | SIMULTANEOUS REPAIR OF ROD 14-39 AND 26-51 RESULTS IN TWO RODS INOPERABLE | | WITHIN A FIVE BY FIVE ARRAY, WHICH INVOKES A 24 HOUR SHUTDOWN PER TECH SPEC | | 3.3.A.f. REPLACEMENT OF SCRAM PILOT VALVE DIAPHRAGMS IS THE CORRECTIVE | | COURSE OF ACTION. THE 24 HOUR CLOCK FOR THE SHUTDOWN LCO STARTED AT 0345 | | EDT. THE LICENSEE INFORMED THE NRC RESIDENT INSPECTOR. | +------------------------------------------------------------------------------+