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 Issue dateTitleTopic
ML20012E0669 March 1990RO 90-01:on 900228,reactor Operator Received Servo Fault Alarm.After Directed Shutdown,Complete Loss of Linear Power Channel Noted.Caused by Corroded Connector at Detector Leads.Connector Replaced.Part 21 Related
ML20028E69111 January 1983Telecopy Ro:On 830110,during Reactor Startup,Fuel Temp Not Tracking Although Normal Temp Indication Displayed.Reactor Shut Down.Caused by Failed Fuel Thermocouple.Reactor Switched to Second Thermocouple
ML20028E6416 January 1983Ro:On 830105,discovered Damaged Fuel Element 7463 During Insp.Element Failed Go/No Go Test.Complete Core Unloading & Fuel Insp Will Be Completed on 830106 & 07
ML20052B66712 April 1982Ro:Final Rept Re Possible Loss of self-protection of SNM Ctr.Fuel Bundle May Not Have Decayed Below self-protection Limit as Discrepancies Existed in Readings.Survey Program Improved & Underwater Fuel Surveys Studied
ML20050B35312 February 1982Ro:On 820205,during Initial Startup,Linear Power Channel Did Not Respond.Rod Withdrawal Terminated.Caused by Detector High Detector High Voltages Switch in Off Position.Training Session Implemented on Monitoring of Instrumentation
ML20009E41715 May 1981Ro:On 810507,during Check of Reactor Operator Licenses & Status,Senior Operator License SOP-3478 Found Expired on 810427.Caused by Failure to Follow Administrative Procedures.Operator Relieved of Duties
ML19352B1658 May 1981Ro:On 810507,while Conducting Check of Reactor Operator License & Requalification Status,Found That License SOP-3478 Held by Gw Waldrop Had Expired on 810427.Caused by Defect in Administrative Procedures.Procedures Have Been Corrected
ML19352B21024 April 1981Ro:On 810409 & 14,during Reactor Prestartup Checks,Interlock Used to Prevent Withdrawal of Shim Safety Control Rods Found Not Functioning.Caused by Threshold Change Due to Change in Solid State Switching Device.Capacitor Installed
ML19318A59023 May 1980Ro:On 800513,secondary Cooling Tower Fan Discovered to Have Disintegrated Causing Damage to Cooling Tower & Resulting in Loss of Secondary Cooling Capacity.Caused by Failure of Fan Transmission Mounting.Temporary Fan Assembly Installed
ML19323F14013 May 1980Ro:On 800513,discovered Secondary Cooling Tower Fan Disintegrated Causing Damage to Tower & Loss of Secondary Cooling Capacity.No Cause Given.Reactor to Be Operated on Reduced Schedule Until Repairs Made
ML19224D78625 June 1979Final RO Rept Re Failure of Experiment Scram Circuit to Function During Surveillance Testing Due to Malfunction of Reset Switch.Caused by Dust on Moving Parts.Switch Cleaned & Immediately Functioned