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 Issue dateTitleTopic
ML19250C06819 October 1979RO 50-20/79-5:on 791010,compiled 10-day Startup W/Only One Operable Nuclear Safety Channel Level Scram.Caused by Broken Resistor on Amplifier Circuit Board.Circuit Board Repaired
ML19312E61427 May 1980Forwards Revised Page 2 of RO 50-20/80-2 Dtd 800523.Revision Corrects Second Paragraph of Section 7 Re Frequency of Blade Thickness Measurements & Clarifies Description of Electromagnetic Coupling of Blade
ML19323D50825 April 1980RO 50-20/80-1:on 800322,initial Rept Was Made Re Failure of Outer Door of Truck Airlock to Maintain Leak Rate of Bldg Containment Limits.Caused by Seal Leak in Outer Door. Door Will Not Be Routinely Opened Until Gasket Is Replaced
ML19323G42223 May 1980RO 50-20/80-02:on 800519,intermittent Binding of Shim Blade Number 1 Not in Accordance W/Tech Specs.Caused by Foreign Matl Impeding Motion.Electromagnet Containing Foreign Matl Replaced & Other Blades Checked
ML19345B99426 November 1980RO 50-020/79-4A:supplemental Info Re Apparent Fuel Element Cladding Failure Originally Reported on 790702.Caused by Mfg Deficiency.Element Continously Monitored
ML20012D96522 March 1990RO 50-20/1990-1:on 900312,incorrect Calculation of Estimated Critical Position (ECP) Attained During Reactor Startup. Caused by Failure to Check Second Portion of ECP Calculation Performed by Individual in Training