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31 Cards in this Set
- Front
- Back
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ON-100 (4)
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Failure of a Jet Pump
Entry Conditions / Symptoms: 1.1 unexplained drop in reactor power 1.2 unexplained drop in core flow indication 1.3 unexplained rise in recirc drive flow to loop containing jet pump 1.4 unexplained drop in indicated dP on jet pump sharing riser with defective jet pump |
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ON-101 (2)
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Loss of isolated phase bus cooling
Entry Conditions / Symptoms: 1.1 UNIT 1 ISO PHASE BUS COOLER TROUBLE alarm indicating a total loss of Isolated Phase Bus Cooling as indicated by both cooling fans not running or both loops cooling water out of service. 1.2 UNIT 2 ISO PHASE BUS COMMON TROUBLE alarm indicating a total loss of Isolated Phase Bus Cooling as indicated by both cooling fans not running or both loops cooling water out of service. |
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ON-102 (3)
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Air Ejector Discharge or Main Steam Line High Radidation
Entry Conditions / Symptoms: 1.1 *AIR EJECTOR OFFGAS DISCHARGE HI RADIATION alarm (*09-G-2). 1.2 Rise in Main Steam Line radiation to 1.5 x normal full power background. 1.3 * CHARCOAL TREATMENT EXHAUST HI RADIATION alarm (*09-C-2) |
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ON-103 (4)
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Control of Sustained Combustion in the Offgas System
Entry Conditions / Symptoms: 1.1 Sudden rise in Offgas System pressures. 1.2 Sudden change in Offgas System flows. 1.3 Sudden drop in Offgas System hydrogen concentration. 1.4 Sudden rise in Offgas System temperatures. |
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ON-104 (5)
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Control Rod Problems
Entry Conditions / Symptoms: 1.1 CONTROL RODS DRIFT IN. 1.2 CONTROL RODS DRIFT OUT. 1.3 CONTROL RODS SCRAM. 1.4 CONTROL ROD STUCK. and can not be moved per S73.1.A, “Normal Operation Of The Reactor Manual Control System”. 1.5 CONTROL ROD UNCOUPLED. |
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ON-107 (4)
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Control Rod Drive System Problems
Entry Conditions / Symptoms: 1.1 *A/*B CRD WATER PUMP TRIP alarm OR *A/*B CRD WATER PUMP MOTOR OVERCURRENT alarm. 1.2 *A/*B CRD PUMP SUCTION LO PRESS alarm OR CRD CHARGING WATER LOW PRESS alarm. 1.3 CRD PUMP SUCTION FILTER HI dP alarm. OR CRD DRIVE WATER FILTER HI dP alarm. 1.4 SCRAM VALVE PILOT AIR HEADER LO PRESS alarm. |
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ON-109 (2)
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Total Loss of All SRM IRM or APRM systems
Entry Conditions / Symptoms: 1.1 Total loss of all Neutron Monitoring Instrumentation in a system while required. 1.2 Total incapability of a Neutron Monitoring System to automatically execute all control rod block OR scram functions. |
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ON-110 (4)
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Loss of Primary Containment
Entry Conditions / Symptoms: 1.1 Sudden drop in primary containment pressure. 1.2 Abnormally high N2 makeup to primary containment. 1.3 Failure of containment penetration leak rate test with resulting containment leakage exceeding 0.6La. 1.4 Observation of primary containment breach. |
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ON-111 (3)
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Loss of Secondary Containment
Entry Conditions / Symptoms: 1.1 Visual observation of damage to secondary containment. 1.2 Observation of unauthorized opening of secondary containment boundary. 1.3 SGTS is unable to maintain secondary containment at -0.25 inches of water pressure with flow rate less than 2,500 CFM for Reactor Enclosure OR 764 CFM for refueling area. |
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ON-113 (4)
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Loss of RECW
Entry Conditions / Symptoms: 1.1 Reactor Enclosure Cooling Water (RECW) High Temperature 1.2 RECW Low Pressure 1.3 RECW Pump Trip 1.4 *A(B) RECIRC PUMP SEAL COOLING WATER LO FLOW alarm |
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ON-114 (2)
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Loss of Stator Water Cooling Runback
Entry Conditions / Symptoms: All of the following: 1.1 * GEN STATOR COOLANT TROUBLE alarm 1.2 Automatic runback of Electro-Hydraulic Control (EHC) Load Set |
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ON-115 (4)
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Loss of Control Enclosure Cooling
Entry Conditions / Symptoms: 1.1 Loss of both Control Structure Chillers. 1.2 Control Room Supply Fan High Temp./High Humidity. 1.3 Aux. Equip Room Supply Fan High Temp./High Humidity. 1.4 Emergency Switchgear & Battery Rms Supply Fans High Temp. 1.5 Complete loss of cooling to Control Room, Aux Equipment Room OR Emergency Switchgear & Battery Rooms. |
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ON-116 (1)
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High Reactor Water Conductivity
Entry Conditions / Symptoms: 1.1 Reactor water conductivity greater than 1.0 umho/cm during power operation. |
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ON-117 (4)
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Loss of TECW
Entry Conditions / Symptoms: 1.1 TECW High Temp. 1.2 TECW Low Press. 1.3 TECW Pump Trip. 1.4 *A(B) INST AIR COMPRESSOR AFTERCOOLER HI TEMP alarm. |
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ON-119 (2)
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Loss of Instrument Air
Entry Conditions / Symptoms: 1.1 Both Instrument Air Header low pressure alarms. 1.2 Scram pilot air header low pressure alarm. |
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ON-120 (6)
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Fuel Handling Problems
Entry Conditions / Symptoms: 1.1 SRM count rate doubles two times between CCTAS steps during Fuel Handling; NOT applicable when loading the 1st, 2nd, 3rd or 4th fuel assembly directly adjacent to SRM’s at the beginning of a core reload. 1.2 Any Fuel Floor Area Radiation Monitor alarms. 1.3 Irradiated Fuel bundle dropped or damaged. 1.4 Irradiated Fuel Rod (Pin) Dropped or Damaged. 1.5 New fuel bundle or New Fuel Rod (pin) Dropped or Damaged AND no other symptoms present. 1.6 Unanticipated reduction of Reactor Cavity OR Spent Fuel Pool Water Level. |
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ON-121 (2)
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Loss of Shutdown Cooling
Entry Conditions / Symptoms: 1.1 Indication of Inadvertent Loss of Shutdown Cooling OR Inability to establish Shutdown Cooling when required. 1.2 Indication of Inadvertent Loss of Alternate Decay Heat Removal (ADHR) OR Inability to establish ADHR when required. |
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ON-122 (3)
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Loss of Main Control Room Annunciator
Entry Conditions / Symptoms: 1.1 MCR annunciators go out unexpectedly. 1.2 MCR annunciators fail to visibly OR audibly alarm. 1.3 MCR annunciators fail to test. |
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ON-123 (1)
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Mispositioned Control Rod
Entry Conditions / Symptoms: 1.1 One or more control rods not at their desired position(s). |
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ON-125 (1)
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Loss of Fuel Pool Cooling
Entry Conditions / Symptoms: 1.1 Indication of loss of capability to maintain Fuel Pool temperature. |
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ON-126 (1)
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Uncontrolled Main Generator Hydrogen Depressurization
Entry Conditions / Symptoms: 1.1 Unexpected *Gen Hydrogen And Seal Oil Sys Trouble Alarm AND observed decreasing Main Generator Hydrogen Pressure as indicated on PI-28-*01, at MCR Panel *0C653 OR as indicated on PI-028-*03, at local Panel *0C120 |
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OT-100 (2/5)
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REACTOR LOW LEVEL
1.0 ENTRY CONDITIONS 1.1 Reactor Feed Pump (RFP) trip 1.2 Unexpected/unexplained drop in RPV level. 2.0 IMMEDIATE OPERATOR ACTIONS 2.1 IF drop in level caused by RFP trip THEN immediately REDUCE Rx power to 85% 2.2 IF drop in level not caused by RFP trip THEN REDUCE Rx power in accordance with GP-5 Appendix 2, until normal RPV level is restored. 2.3 IF RPV level is outside of the band 30 to 40 inches AND a RFP controller/ FWLCS malfunction exists, THEN manually CONTROL RFPs. 2.4 IF valid "FWLCS FAILURE" alarm exists, OR power has been lost to the digital FWLCS THEN manually CONTROL RFPs. 2.5 IF SCRAM condition occurs, THEN ENTER T-101, RPV Control AND EXIT this procedure. |
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OT-101 (1/3)
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OT-101 HIGH DRYWELL PRESSURE
1.0 ENTRY CONDITIONS INITIALS 1.1 Unexpected/unexplained rise in Drywell pressure. 2.0 IMMEDIATE OPERATOR ACTIONS 2.1 MAXIMIZE Drywell cooling. 2.2 TERMINATE Containment inerting. 2.3 IF scram condition occurs, THEN ENTER T-101 AND T-102 AND EXECUTE concurrently. |
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OT-102 (2/3)
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OT-102 REACTOR HIGH PRESSURE
1.0 ENTRY CONDITIONS 1.1 Unexpected/unexplained rise in Reactor pressure. 1.2 Unexpected/unexplained opening of a Main Turbine Bypass Valve. 2.0 IMMEDIATE OPERATOR ACTIONS 2.1 REDUCE Reactor power in accordance with GP-5, Steady State Operations, AND Reactor Maneuvering Shutdown Instructions to maintain Reactor pressure less than 1053 psig. 2.2 CONTROL Reactor pressure below 1053 psig with bypass valves using the jack, OR by reducing pressure set. 2.3 IF scram occurs, THEN ENTER T-101. |
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OT-104 (1/2)
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UNEXPECTED/UNEXPLAINED POSITIVE OR NEGATIVE REACTIVITY INSERTION
1.0 ENTRY CONDITIONS 1.1 Unexpected/unexplained positive or negative reactivity insertion. 2.0 IMMEDIATE OPERATOR ACTIONS 2.1 REDUCE Rx power in accordance with GP-5 Appendix 2, AND Reactor Maneuvering Shutdown Instructions, to maintain Rx power at OR below initial pre-transient level. 2.2 IF scram condition occurs, THEN ENTER T-100, Scram/Scram Recovery OR T-101, RPV Control, as applicable. |
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OT-105 (1/2)
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SCRAM DISCHARGE VOLUME HIGH LEVEL
1.0 ENTRY CONDITIONS 1.1 “SCRAM DISCHARGE VOLUME NOT DRAINED” alarm 2.0 IMMEDIATE OPERATOR ACTIONS 2.1 VERIFY all scram discharge volume (SDV) vent AND drain valves are open. 2.2 IF scram occurs, THEN ENTER T-100, “Scram/Scram Recovery” OR T-101, “RPV Control,” as applicable. |
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OT-110 (1/2)
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REACTOR HIGH LEVEL
1.0 ENTRY CONDITIONS 1.1 Unexpected/unexplained rise in RPV level. 2.0 IMMEDIATE OPERATOR ACTIONS 2.1 REDUCE FW flow until normal RPV level is restored. 2.1.1 IF RPV level is outside of the band 30 to 40 inches AND a RFP controller/ FWLCS malfunction exists, THEN manually CONTROL RFPs. 2.1.2 IF valid "FWLCS FAILURE" alarm (ARC-MCR-*07 D4) exists, THEN manually CONTROL RFPs. 2.2 IF scram condition occurs, THEN ENTER T-100, Scram/Scram Recovery OR T-101, RPV Control, as applicable AND EXECUTE concurrently. |
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OT-112 (1/2)
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RECIRCULATION PUMP TRIP
1.0 ENTRY CONDITIONS 1.1 Recirc Pump trip(s) while Reactor Mode Switch is in "STARTUP" OR "RUN" position. 2.0 IMMEDIATE OPERATOR ACTIONS 2.1 MONITOR RPV level AND manually CONTROL RPV level as necessary until normal RPV level is restored. 2.2 IF scram condition occurs, THEN ENTER T-100, Scram/Scram Recovery OR T-101, RPV Control, as applicable. |
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OT-114 (1/2)
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INADVERTENT OPENING OF A RELIEF VALVE
1.0 ENTRY CONDITIONS 1.1 Indication of stuck open relief valve. 2.0 IMMEDIATE OPERATOR ACTIONS 2.1 PLACE both loops of Suppression Pool cooling in service. 2.2 IF Suppression Pool temperature reaches 110 EF, THEN immediately PERFORM a rapid plant shutdown per GP-4 AND PERFORM the following: 2.2.1 PLACE Mode Switch in "SHUTDOWN" AND ENTER T-100 OR T-101, as applicable AND T-102 AND EXECUTE concurrently. |
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OT-116 (1/2)
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OT-116 LOSS OF CONDENSER VACUUM
1.0 ENTRY CONDITIONS INITIALS 1.1 Unexpected/unexplained drop in Condenser vacuum. 2.0 IMMEDIATE OPERATOR ACTIONS 2.1 REDUCE Reactor power in accordance with GP-5 Appendix 2, & RMSI until Condenser vacuum stops dropping. 2.2 IF scram condition occurs, THEN ENTER T-100 OR T-101, as applicable. |
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OT-117 (1/1)
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OT-117 RPS FAILURES
1.0 ENTRY CONDITIONS 1.1 Failure to SCRAM 1.2 Failure to half SCRAM 2.0 IMMEDIATE OPERATOR ACTIONS 2.1 FAILURE TO SCRAM (In Progress) 2.1.1 IF an actual plant parameter (validated) is exceeding SCRAM setpoint AND all rods do not fully insert, THEN PERFORM the following: 1. Manually SCRAM the reactor. 2. PLACE Mode Switch in "SHUTDOWN." 3. REFER to LGS Emergency Plan Annex, Table 3-1. 4. ENTER T-101AND EXIT this procedure. |
