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 Issue dateTitle
CP-201700976, Active Safety Function Anchor Darling Double Disc Gate Valves18 December 2017Active Safety Function Anchor Darling Double Disc Gate Valves
IR 05000445/19890307 July 1989Augmented Insp Team Insp Repts 50-445/89-30 & 50-446/89-30 on 890515-0616.Weaknesses Noted.Major Areas Inspected:Check Valve Failures Which Allowed Backflow Through Auxiliary Feedwater Sys During Hot Functional Testing of Unit 1
Information Notice 1987-08, Degraded Motor Leads in Limitorque DC Motor Operators4 February 1987Degraded Motor Leads in Limitorque DC Motor Operators
Information Notice 1988-85, Broken Retaining Block Studs on Anchor Darling Check Valves14 October 1988Broken Retaining Block Studs on Anchor Darling Check Valves
Information Notice 1988-86, Operating with Multiple Grounds in Direct Current Distribution Systems21 October 1988Operating with Multiple Grounds in Direct Current Distribution Systems
Information Notice 1988-87, Pump Wear and Foreign Objects in Plant Piping Systems16 November 1988Pump Wear and Foreign Objects in Plant Piping Systems
Information Notice 1988-88, Degradation of Westinghouse Ard Relays16 November 1988Degradation of Westinghouse Ard Relays
Information Notice 1988-89, Degradation of Kapton Electrical Insulation21 November 1988Degradation of Kapton Electrical Insulation
Information Notice 1988-90, Unauthorized Removal of Industrial Nuclear Gauges22 November 1988Unauthorized Removal of Industrial Nuclear Gauges
Information Notice 1988-92, Potential for Spent Fuel Pool Draindwon22 November 1988Potential for Spent Fuel Pool Draindwon
Information Notice 1989-56, Questionable Certification of Material Supplied to the Defense Dept. By Nuclear Suppliers22 November 1989Questionable Certification of Material Supplied to the Defense Dept. By Nuclear Suppliers
Information Notice 1989-56, Questionable Certification of Material Supplied to the Defense Dept. by Nuclear Suppliers22 November 1989Questionable Certification of Material Supplied to the Defense Dept. by Nuclear Suppliers
Information Notice 1992-41, Consideration of Stem Rejection Load In Calculation of Required Valve Thrust29 May 1992Consideration of Stem Rejection Load In Calculation of Required Valve Thrust
Information Notice 1992-41, Consideration of Stem Rejection Load in Calculation of Required Valve Thrust29 May 1992Consideration of Stem Rejection Load in Calculation of Required Valve Thrust
Information Notice 1992-67, Deficiency in Design Modifications to Address Failures of Hiller Actuators Upon a Gradual Loss of Air Pressure10 September 1992Deficiency in Design Modifications to Address Failures of Hiller Actuators Upon a Gradual Loss of Air Pressure
Information Notice 1993-16, Failures of Not-Locking Devices in Check Valves19 February 1993Failures of Not-Locking Devices in Check Valves
Information Notice 1993-77, Human Errors That Result in Inadvertent Transfers of Special Nuclear Material at Fuel Cycle Facilities4 October 1993Human Errors That Result in Inadvertent Transfers of Special Nuclear Material at Fuel Cycle Facilities
Information Notice 1994-55, Problems with Copes-Vulcan Pressurizer Power-Operated Relief Valves4 August 1994Problems with Copes-Vulcan Pressurizer Power-Operated Relief Valves
Information Notice 1996-08, Thermally Induced Pressure Locking of a High Pressure Coolant Injection Gate Valve5 February 1996Thermally Induced Pressure Locking of a High Pressure Coolant Injection Gate Valve
ML14189A53719 June 2014Regulatory Issue Summary (RIS) 2014-07, Enhancements to the Vendor Inspection Program- Vendor Information Request. Part 4 of 5
ML19354D37212 October 1989Responds to NRC Bulletin 89-002, Stress Corrosion Cracking of High Hardness Type 410 Stainless Steel Internal Preloaded Bolting in Anchor Darling Model S350W Swing Check Valves of Similar Design. No Subj Swing Check Valves Used at Plants
ML20086F81126 November 1991Responds to NRC Bulletin 89-002, Stress Corrosion Cracking Hardness Type 410 Stainless Steel Internal Preloaded Bolting in Anchor/Darling Model S350W Swing Check Valves or Valves of Similiar Design
ML20116A03417 July 1996Rev 0 to Temp Vs Distance Profile for 10 RHR Line Containing Stagnant Water
NRC Generic Letter 1991-1717 October 1991NRC Generic Letter 1991-017: Generic Safety Issue 29, Bolting Degradation or Failure in Nuclear Power Plants.
RIS 2014-07, Regulatory Issue Summary (RIS) 2014-07, Enhancements to the Vendor Inspection Program- Vendor Information Request. Part 4 of 519 June 2014Regulatory Issue Summary (RIS) 2014-07, Enhancements to the Vendor Inspection Program- Vendor Information Request. Part 4 of 5
Regulatory Issue Summary (RIS) 2014-07, Enhancements to the Vendor Inspection Program- Vendor Information Request. Part 5 of 5