U.S. Nuclear Regulatory Commission Operations Center Event Reports For 11/16/94 - 11/17/94 ** EVENT NUMBERS ** 27910 28034 28035 28036 28037 28038 28039 28040 !!!!!!!!! THIS EVENT HAS BEEN RETRACTED. THIS EVENT HAS BEEN RETRACTED !!!!!!! +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 27910 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: MILLSTONE REGION: 1 |NOTIFICATION DATE: 10/17/94 | |UNIT: [ ] [2] [ ] STATE: CT |NOTIFICATION TIME: 05:07 [ET]| |RX TYPE: [1] GE-3,[2] CE,[3] W-4-LP |EVENT DATE: 10/17/94 | +------------------------------------------------+EVENT TIME: 04:14[EDT]| |NRC NOTIFIED BY: DUBAY |LAST UPDATE DATE: 11/16/94 | |HQ OPS OFFICER: DICK JOLLIFFE +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |MICHAEL MODES RDO | |AUNA 50.72(b)(1)(ii)(A) UNANALYZED COND OP | | |AINC 50.72(b)(2)(iii)(C) POT UNCNTRL RAD REL | | | | | | | | | | | +-----+----------+-------+--------+--------------+--+--------+-----------------+ |UNIT |SCRAM CODE|RX CRIT|INIT PWR| INIT RX MODE |CURR PWR| CURR RX MODE | +-----+----------+-------+--------+-----------------+--------+-----------------+ | | | | | 2 | N N 0 REFUELING | 0 REFUELING | | | | | +-----+---------------------------------------------+--------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | - CONTAINMENT PURGE ISOLATION VALVE DRIFTED OPEN AND WOULD NOT CLOSE - | | | | WITH UNIT 2 IN A REFUELING OUTAGE AND CORE ALTERATIONS (UNCOUPLING CONTROL | | RODS) IN PROGRESS, THE AIR OPERATED OUTER CONTAINMENT PURGE ISOLATION VALVE | | (#2-AC-7) DRIFTED OPEN. CONTROL ROOM OPERATORS IMMEDIATELY ATTEMPTED TO | | CLOSE THE VALVE FROM THE CONTROL ROOM WITH THE HAND SWITCH, BUT IT DID NOT | | CLOSE. LICENSEE SUSPENDED ALL CORE ALTERATIONS. CONTROL ROOM OPERATORS | | THEN ATTEMPTED TO CLOSE THE VALVE WITH A TEST HIGH RADIATION SIGNAL AND | | IT DID NOT CLOSE. | | | | APPROXIMATELY 15 MINUTES LATER, CONTROL ROOM OPERATORS CLOSED THE VALVE BY | | BOTH A HAND SWITCH SIGNAL AND A TEST HIGH RADIATION SIGNAL AND THEN FAILED | | THE VALVE CLOSED BY ISOLATING ITS AIR SUPPLY. | | | | THE INNER CONTAINMENT PURGE ISOLATION VALVE (#2-AC-6) IN SERIES WITH THIS | | VALVE FAILED ITS LOCAL LEAK RATE TEST ON 10/13/94 AND HAS BEEN CLOSED SINCE | | THAT TIME. ALSO 2 NON-SAFETY RELATED VALVES DOWNSTREAM OF 2-AC-7 HAVE BEEN | | MAINTAINED CLOSED. | | | | LICENSEE IS INVESTIGATING THE CAUSE. | | | | LICENSEE INFORMED THE NRC RESIDENT INSPECTOR. | | | | ***UPDATE ON 11/16/94 @ 11:14 BY RESETAR TO GOULD*** THE LICENSEE IS | | RETRACTING THIS EVENT BASED ON THE INNER VALVE HAVING THE CAPABILITY OF | | CLOSING WHEN IN MODES 5 & 6. THEREFORE CONTAINMENT INTEGRITY WAS NOT LOST | | WHILE THE THE PLANT WAS IN MODE 6. IT WAS DETERMINED THAT THE VALVE WAS | | ADMINISTRATIVELY DECLARED INOPERABLE BECAUSE IT FAILED ITS APPENDIX J | | LEAKAGE TEST. THE CAUSE OF THE FAILED LEAK TEST WAS DUE TO PACKING LEAKAGE | | AND THAT WOULD NOT HAVE AFFECTED CONTAINMENT INTEGRITY IN MODES 5 & 6. THE | | RI WAS INFORMED. REG 1 RDO(WHITE) WAS NOTIFIED. | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |HOSPITAL | |EVENT NUMBER: 28034 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |LICENSEE: LAHEY CLINIC |NOTIFICATION DATE: 11/16/94 | | CITY: BURLINGTON REGION: 1 |NOTIFICATION TIME: 11:56 [ET]| | COUNTY: STATE: MA |EVENT DATE: 11/16/94 | |LICENSE#: 20-05766-02 AGREEMENT: N |EVENT TIME: 11:35[EST]| | DOCKET: |LAST UPDATE DATE: 11/16/94 | | +-----------------------------+ | |PERSON ORGANIZATION| | |JOHN WHITE RDO | | | | +------------------------------------------------+ | |NRC NOTIFIED BY: MOWER | | |HQ OPS OFFICER: CHAUNCEY GOULD | | +------------------------------------------------+ | |EMERGENCY CLASS: NOT APPLICABLE | | |10 CFR SECTION: | | |LADM 35.33(a) MED MISADMINISTRATION | | | | | | | | | | | | | | +------------------------------------------------+-----------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | THE LICENSEE REPORTED A MEDICAL MISADMINISTRATION DURING TREATMENT OF A | | TUMOR. | | | | THE LICENSEE WAS USING A GAMMA MED HIGH DOSE RATE TO TREAT A TUMOR TO 9 | | STOPPING POSITIONS. AFTER THEY HAD TREATED TO THE FIRST 7 POSITIONS THE | | MACHINE WENT INTO EMERGENCY STOP AND THE SOURCE RETRACTED ALMOST ALL THE | | WAY INTO THE MACHINE. THE TUMOR WAS COMPLETELY TREATED, BUT THEY HAD | | PLANNED TO TREAT A LITTLE BEFORE AND AFTER THE TUMOR AND THIS WAS NOT DONE | | BECAUSE THE SOURCE WAS RETRACTED. THE LICENSEE IS NOT SURE IF IT WAS A | | MISADMINISTRATION SINCE THE PART NOT TREATED WAS NOT THE TUMOR. THEY HAVE | | NOTIFIED THE SERVICE COMPANY TO LOOK AT THE UNIT TO RESOLVE THE PROBLEM. | | THEY HAVE NOT YET NOTIFIED THE PATIENT. | | | | HOO NOTE: REGION 1 (DWYER) HAS ASSESSED THIS INCIDENT AND DOES NOT CONSIDER | | IT REPORTABLE. | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 28035 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: FT SAINT VRAIN REGION: 4 |NOTIFICATION DATE: 11/16/94 | |UNIT: [1] [ ] [ ] STATE: CO |NOTIFICATION TIME: 12:11 [ET]| |RX TYPE: [1] GA (GENERAL ATOMIC) |EVENT DATE: 11/15/94 | +------------------------------------------------+EVENT TIME: 01:50[MST]| |NRC NOTIFIED BY: JOHN HAK |LAST UPDATE DATE: 11/16/94 | |HQ OPS OFFICER: WILLIAM HUFFMAN +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |GARY SANBORN RDO | |APRE 50.72(b)(2)(vi) OFFSITE NOTIFICATION | | | | | | | | | | | | | | +-----+----------+-------+--------+--------------+--+--------+-----------------+ |UNIT |SCRAM CODE|RX CRIT|INIT PWR| INIT RX MODE |CURR PWR| CURR RX MODE | +-----+----------+-------+--------+-----------------+--------+-----------------+ | 1 | N N 0 REFUELING | 0 REFUELING | | | | | | | | | +-----+---------------------------------------------+--------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | OFFSITE NOTIFICATION OF COLORADO DEPARTMENT OF HEALTH. | | | | WHILE MAKING A PLANT DISCHARGE, ABOUT 500 GALLONS OF EFFLUENT OVERFLOWED | | FROM THE "GOOSE QUILL" DITCH INTO A PASTURE. NO CONTAMINATION WAS INVOLVED. | | THE CAUSE OF THE OVERFLOW WAS A BUILDUP OF DIRT AND WEEDS. | | | | THE COLORADO DEPT. OF HEALTH WAS NOTIFIED AT 10:00 MST TODAY. THE NRC | | RESIDENT WILL BE INFORMED. | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 28036 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: BROWNS FERRY REGION: 2 |NOTIFICATION DATE: 11/16/94 | |UNIT: [ ] [2] [ ] STATE: AL |NOTIFICATION TIME: 14:29 [ET]| |RX TYPE: [1] GE-4,[2] GE-4,[3] GE-4 |EVENT DATE: 11/15/94 | +------------------------------------------------+EVENT TIME: 15:46[CST]| |NRC NOTIFIED BY: DOMINICK LOGOLBO |LAST UPDATE DATE: 11/16/94 | |HQ OPS OFFICER: WILLIAM HUFFMAN +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |POTTER 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 +------------------------------------------------------------------------------+ | TEMPORARY LOSS OF SHUTDOWN COOLING DUE TO PERSONNEL ERROR. | | | | THE FOLLOWING IS THE TEXT OF A FACSIMILE REPORTING THIS EVENT: | | "DURING THE PERFORMANCE OF O-SI-4.9.A.1.b-4, DIESEL GENERATOR "D" EMERGENCY | | LOAD ACCEPTANCE TEST, THE OUTBOARD SHUTDOWN COOLING ISOLATION VALVE | | 2-FCV-74-47 WAS INADVERTENTLY CLOSED. | | | | PERFORMANCE OF STEP 7.13.17 OF O-SI-4.9.A.1.b-4 REQUIRES THAT A BOOT BE | | PLACED BETWEEN THE CONTACT POINTS 5 AND 6 OF RELAY 10A-K98B. RATHER THAN | | PLACING A BOOT, A JUMPER WAS PLACED BETWEEN THESE CONTACTS. JUMPERING THESE | | CONTACTS CAUSED 2-FCV-74-47 TO CLOSE. THIS EVENT ALSO CAUSED 2A RHR PUMP, | | WHICH WAS ALIGNED AND RUNNING IN THE SHUTDOWN COOLING MODE, TO TRIP. IT WAS | | IMMEDIATELY REALIZED THAT THE JUMPER HAD CAUSED THE LOSS OF SHUTDOWN | | COOLING. OPERATORS REMOVED THE JUMPER AND PLACED RHR LOOP 1 BACK INTO | | SHUTDOWN COOLING. SHUTDOWN COOLING WAS OUT OF SERVICE FOR APPROXIMATELY ONE | | MINUTE. | | | | THIS EVENT WAS INITIALLY DETERMINED TO BE NON-REPORTABLE. SUBSEQUENT REVIEW | | DETERMINED THAT THE EVENT IS REPORTABLE WITHIN 4 HOURS PER | | 10CFR50.72(b)(2)(iii). THIS EVENT IS ALSO REPORTABLE WITHIN 30 DAYS PER | | 10CFR50.73(a)(2)(v & vi)" END OF TEXT. | | | | THERE WAS NO DETECTABLE HEATUP WHILE SHUTDOWN COOLING WAS OUT OF SERVICE. | | ALL SYSTEMS FUNCTIONED AS REQUIRED. | | | | THE NRC RESIDENT INSPECTOR HAS BEEN INFORMED. | | | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 28037 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: DIABLO CANYON REGION: 4 |NOTIFICATION DATE: 11/16/94 | |UNIT: [1] [2] [ ] STATE: CA |NOTIFICATION TIME: 15:24 [ET]| |RX TYPE: [1] W-4-LP,[2] W-4-LP |EVENT DATE: 11/16/94 | +------------------------------------------------+EVENT TIME: 10:32[PST]| |NRC NOTIFIED BY: GLENN GOELZER |LAST UPDATE DATE: 11/16/94 | |HQ OPS OFFICER: WILLIAM HUFFMAN +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |GARY SANBORN RDO | |APRE 50.72(b)(2)(vi) OFFSITE NOTIFICATION | | | | | | | | | | | | | | +-----+----------+-------+--------+--------------+--+--------+-----------------+ |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 +------------------------------------------------------------------------------+ | OFFSITE NOTIFICATION OF ASPHALT OIL RUNOFF. | | | | THE FOLLOWING IS THE TEXT OF A FACSIMILE REPORTING THIS EVENT: | | | | "APPROXIMATELY 42 GALLONS TO 2000 GALLONS OF ASPHALT PAVING OIL WASHED DOWN | | TOWARD DIABLO CANYON CREEK DURING OVER-NIGHT RAINS. THE ASPHALT WAS OILED | | DURING DAY LIGHT HOURS ON 11/15/94 NEAR THE DIABLO CANYON 500 KV | | SWITCHYARD, NW OF THE FACILITIES. | | | | THE OIL IS CONTAINED AND IS BEING CLEANED UP. OFF-SITE AGENCIES HAVE BEEN | | NOTIFIED PER CP M-9A, HAZARDOUS MATERIALS INCIDENT RESPONSE PROCEDURE. | | | | THIS 4 HOUR NOTIFICATION IS BEING PERFORMED IN ACCORDANCE WITH | | 10CFR50.72(b)(2)(vi). A NEWS RELEASE IS PLANNED OR OTHER GOVERNMENT | | AGENCIES HAVE BEEN OR WILL BE NOTIFIED OF AN EVENT RELATED TO THE | | PROTECTION OF THE ENVIRONMENT." END OF TEXT. | | | | THE FOLLOWING AGENCIES WERE NOTIFIED: CALIFORNIA DIVISION OF FORESTRY; | | CALIFORNIA DEPT OF HEALTH; CALIFORNIA OFFICE OF EMERGENCY SERVICES; | | CALIFORNIA EPA; AND THE US COAST GUARD. | | | | THE NRC RESIDENT INSPECTOR HAS BEEN INFORMED. | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 28038 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: CRYSTAL RIVER REGION: 2 |NOTIFICATION DATE: 11/16/94 | |UNIT: [3] [ ] [ ] STATE: FL |NOTIFICATION TIME: 17:55 [ET]| |RX TYPE: [3] B&W-L-LP |EVENT DATE: 09/07/94 | +------------------------------------------------+EVENT TIME: 03:19[EST]| |NRC NOTIFIED BY: HARVEY LILES |LAST UPDATE DATE: 11/16/94 | |HQ OPS OFFICER: WILLIAM HUFFMAN +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |EDWARD MCALPINE 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 Y 100 POWER OPERATION | 100 POWER OPERATION | | | | | | | | | +-----+---------------------------------------------+--------------------------+ EVENT TEXT +------------------------------------------------------------------------------+ | THE PRESSURE VERSUS LEVEL RELATIONSHIP FOR THE MAKEUP TANK RESULTED IN | | PLANT OPERATION OUTSIDE THE DESIGN BASIS. | | | | THE MAKEUP TANK RECEIVES REACTOR COOLANT LETDOWN AND IS USED AS A NORMAL | | SUPPLY SOURCE FOR CHARGING TO THE REACTOR. THE TANK ALSO HAS A HYDROGEN | | OVERPRESSURE USED FOR RCS CHEMISTRY CONTROL. WHEN A SAFETY INJECTION SIGNAL | | IS RECEIVED, THE HIGH PRESSURE CHARGING PUMPS ALIGN TO THE BORATED WATER | | STORAGE TANKS BUT THE SUCTION SUPPLY FROM THE MAKEUP TANK IS NOT ISOLATED. | | | | UNDER CERTAIN ACCIDENT SCENARIOS, A HIGH HYDROGEN OVERPRESSURE IN THE | | MAKEUP TANK COMBINED WITH A LOW RCS LEVEL COULD RESULT IN THE MAKEUP TANK | | BEING SUCKED DRY AND AFFECTING NPSH FOR THE HIGH PRESSURE CHARGING PUMPS. | | TO AVOID THIS SITUATION, THE PRESSURE AND LEVEL OF THE MAKEUP TANK ARE | | MAINTAINED WITHIN PRESCRIBED LIMITS. | | | | RECENT ANALYSIS OF MAKEUP TANK OPERATING DATA FOR THE DATE OF 9/7/94 HAS | | DETERMINED THAT THE COMBINATION OF MAKEUP TANK LEVEL AND HYDROGEN PRESSURE | | WERE NON-CONSERVATIVE FOR CERTAIN DESIGN BASIS SAFETY INJECTION SCENARIOS | | AND OUTSIDE THE DESIGN BASIS FOR THE PLANT. | | | | THE NRC RESIDENT INSPECTOR WILL BE NOTIFIED. | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 28039 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: RIVER BEND REGION: 4 |NOTIFICATION DATE: 11/16/94 | |UNIT: [1] [ ] [ ] STATE: LA |NOTIFICATION TIME: 18:37 [ET]| |RX TYPE: [1] GE-6 |EVENT DATE: 11/16/94 | +------------------------------------------------+EVENT TIME: 16:00[CST]| |NRC NOTIFIED BY: CLARENCE BUSH |LAST UPDATE DATE: 11/16/94 | |HQ OPS OFFICER: WILLIAM HUFFMAN +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |EDWARD MCALPINE RDO | |APRE 50.72(b)(2)(vi) OFFSITE NOTIFICATION | | | | | | | | | | | | | | +-----+----------+-------+--------+--------------+--+--------+-----------------+ |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 +------------------------------------------------------------------------------+ | OFFSITE NOTIFICATION OF A SEWAGE LEAK. | | | | A SEWAGE LINE BROKE AND AN UNDETERMINED AMOUNT OF RAW SEWAGE LEAKED INTO A | | NEARBY DITCH AND SUBSEQUENTLY INTO THE PLANT STORM DRAIN SYSTEM. THE TIME | | OF DISCOVERY OF THIS CONDITION WAS 11:30 CST. THE BROKEN SEWAGE LINE HAS | | BEEN REPAIRED. | | | | THE SEWAGE RELEASE WAS REPORTED TO THE STATE DEPARTMENT OF ENVIRONMENTAL | | QUALITY AND THE US EPA. THE LICENSEE IS ALSO REPORTING THIS TO THE NRC AS A | | 24 HOUR REQUIRED NOTIFICATION UNDER SECTION 4.1 OF THE ENVIRONMENTAL | | PROTECTION PLAN. | | | | THE NRC RESIDENT INSPECTOR HAS BEEN INFORMED. | +------------------------------------------------------------------------------+ +----------------------------------+ +-----------------------+ |POWER REACTOR | |EVENT NUMBER: 28040 | +----------------------------------+ +-----------------------+ +------------------------------------------------+-----------------------------+ |FACILITY: COOPER REGION: 4 |NOTIFICATION DATE: 11/16/94 | |UNIT: [1] [ ] [ ] STATE: NE |NOTIFICATION TIME: 21:55 [ET]| |RX TYPE: [1] GE-4 |EVENT DATE: 11/16/94 | +------------------------------------------------+EVENT TIME: 18:00[CST]| |NRC NOTIFIED BY: TERRY RATZLAFF |LAST UPDATE DATE: 11/16/94 | |HQ OPS OFFICER: WILLIAM HUFFMAN +-----------------------------+ +------------------------------------------------+ NOTIFICATIONS | |EMERGENCY CLASS: NOT APPLICABLE +-----------------------------+ |10 CFR SECTION: |GARY SANBORN RDO | |AIND 50.72(b)(2)(iii)(D) ACCIDENT MITIGATION | | | | | | | | | | | | | | +-----+----------+-------+--------+--------------+--+--------+-----------------+ |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 +------------------------------------------------------------------------------+ | NON-SAFETY RELATED RELAY COULD AFFECT SAFETY RELATED EQUIPMENT UNDER HARSH | | ACCIDENT ENVIRONMENT CONDITIONS. | | | | "THE CONTROL RELAY FOR MAIN STEAM SUPPLY TO AUGMENTED OFFGAS VALVES (AOG) | | 920/921 MV (MS-REL-52XCP) FUNCTIONS TO CLOSE VALVES 920 AND 921 MV IN THE | | EVENT THE CONDENSATE PUMPS ARE NOT OPERATING, ISOLATING STEAM TO THE | | AUGMENTED OFFGAS SYSTEM. THIS IS A NON-SAFETY FUNCTION. THIS RELAY IS NOT | | E.Q. QUALIFIED BUT WOULD BE SUBJECTED TO A HARSH STEAM ENVIRONMENT AS A | | RESULT OF A MAIN STEAM LINE BREAK; RCIC LINE BREAK; OR A FEEDWATER LINE | | BREAK. IT WOULD ALSO BE SUBJECT TO A HARSH RADIATION ENVIRONMENT AFTER A | | LOCA. | | | | THIS RELAY SHARES A COMMON POWER SUPPLY (120 VAC) WITH NBI-LI-91A (FUEL | | ZONE LEVEL A) AND NBI- LI-92 (STEAM NOZZLE RANGE LEVEL), BOTH OF WHICH ARE | | REG GUIDE 1.97, CATEGORY 1, INDICATIONS AND ARE REQUIRED TO FUNCTION UNDER | | LOCA CONDITIONS. FAILURE OF THIS RELAY COULD IMPACT THESE INSTRUMENTS. | | | | ADDITIONALLY, EVALUATION OF HPCI'S ABILITY TO DELIVER RATED FLOW DOWN TO | | 150 PSIG (STEAM PRESSURE) ASSUMES THAT 920 MV IS CLOSED. RELAY MS-REL-52XCP | | CONTACTS ARE IN THE CONTROL CIRCUIT FOR 920 MV. IF THESE CONTACTS WERE TO | | SHORT, THEY WOULD OPEN THE CONTROL POWER FUSE AND PREVENT 920 MV FROM | | CLOSING ELECTRICALLY. UNDER LOW STEAM PRESSURE CONDITIONS, THIS EVALUATION | | (OF HPCI'S ABILITY TO DELIVER RATED FLOW DOWN TO 150 PSIG STEAM PRESSURE) | | WOULD NO LONGER BE VALID." | | | | THIS CONDITION WILL BE CORRECTED BEFORE RESTART. | | | | THE NRC RESIDENT INSPECTOR HAS BEEN NOTIFIED. | +------------------------------------------------------------------------------+