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| Issue date | Title | |
|---|---|---|
| NL-17-2097, No Active Safety Function Anchor Darling Double Disc Gate Valves | 15 December 2017 | No Active Safety Function Anchor Darling Double Disc Gate Valves |
| ML17194A825 | 11 July 2017 | Part 21 Report Re Wedge Pin Failure in Anchor Darling Motor Operated Double Disc Gate Valves with Threaded Stem to Upper Wedge Connections |
| NL-14-1276, Snubber Inspection Plan Submittal in Accordance with ASME OM Code | 31 October 2014 | Snubber Inspection Plan Submittal in Accordance with ASME OM Code |
| ML13064A012 | 25 February 2013 | Notification of Potential Part 21 Report Re Wedge Pin Failure of an Anchor/Darling Double-Disc Gate Valve |
| HL-5758, Forwards Response to NRC 990129 RAI Re GL 96-05 Program at Ei Hatch Nuclear Plant | 9 April 1999 | Forwards Response to NRC 990129 RAI Re GL 96-05 Program at Ei Hatch Nuclear Plant |
| HL-5108, Forwards 180-day Response to GL 95-07, Pressure Locking & Thermal Binding of Safety-Related Power-Operated Gate Valves | 12 February 1996 | Forwards 180-day Response to GL 95-07, Pressure Locking & Thermal Binding of Safety-Related Power-Operated Gate Valves |
| Information Notice 1996-08, Thermally Induced Pressure Locking of a High Pressure Coolant Injection Gate Valve | 5 February 1996 | Thermally Induced Pressure Locking of a High Pressure Coolant Injection Gate Valve |
| HL-5115, Ei Hatch Nuclear Plant - Units 1 & 2 Annual Operating Rept 1995 | 31 December 1995 | Ei Hatch Nuclear Plant - Units 1 & 2 Annual Operating Rept 1995 |
| Information Notice 1994-55, Problems with Copes-Vulcan Pressurizer Power-Operated Relief Valves | 4 August 1994 | Problems with Copes-Vulcan Pressurizer Power-Operated Relief Valves |
| Information Notice 1993-77, Human Errors That Result in Inadvertent Transfers of Special Nuclear Material at Fuel Cycle Facilities | 4 October 1993 | Human Errors That Result in Inadvertent Transfers of Special Nuclear Material at Fuel Cycle Facilities |
| Information Notice 1993-16, Failures of Not-Locking Devices in Check Valves | 19 February 1993 | Failures of Not-Locking Devices in Check Valves |
| Information Notice 1992-67, Deficiency in Design Modifications to Address Failures of Hiller Actuators Upon a Gradual Loss of Air Pressure | 10 September 1992 | Deficiency in Design Modifications to Address Failures of Hiller Actuators Upon a Gradual Loss of Air Pressure |
| Information Notice 1992-41, Consideration of Stem Rejection Load In Calculation of Required Valve Thrust | 29 May 1992 | Consideration of Stem Rejection Load In Calculation of Required Valve Thrust |
| Information Notice 1992-41, Consideration of Stem Rejection Load in Calculation of Required Valve Thrust | 29 May 1992 | Consideration of Stem Rejection Load in Calculation of Required Valve Thrust |
| NRC Generic Letter 1991-17 | 17 October 1991 | NRC Generic Letter 1991-017: Generic Safety Issue 29, Bolting Degradation or Failure in Nuclear Power Plants. |
| ML20011D872 | 21 December 1989 | Responds to NRC Bulletin 89-002, Stress Corrosion Cracking of High-Hardness Type 410 Stainless Steel Internal Preloaded Bolting in Anchor-Darling S350W.... Review of Sys Drawings Determined That No Subj Valves Installed at Facilities |
| Information Notice 1989-56, Questionable Certification of Material Supplied to the Defense Dept. by Nuclear Suppliers | 22 November 1989 | Questionable 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 Suppliers | 22 November 1989 | Questionable Certification of Material Supplied to the Defense Dept. By Nuclear Suppliers |
| Information Notice 1988-92, Potential for Spent Fuel Pool Draindwon | 22 November 1988 | Potential for Spent Fuel Pool Draindwon |
| Information Notice 1988-90, Unauthorized Removal of Industrial Nuclear Gauges | 22 November 1988 | Unauthorized Removal of Industrial Nuclear Gauges |
| Information Notice 1988-89, Degradation of Kapton Electrical Insulation | 21 November 1988 | Degradation of Kapton Electrical Insulation |
| Information Notice 1988-87, Pump Wear and Foreign Objects in Plant Piping Systems | 16 November 1988 | Pump Wear and Foreign Objects in Plant Piping Systems |
| Information Notice 1988-88, Degradation of Westinghouse Ard Relays | 16 November 1988 | Degradation of Westinghouse Ard Relays |
| Information Notice 1988-86, Operating with Multiple Grounds in Direct Current Distribution Systems | 21 October 1988 | Operating with Multiple Grounds in Direct Current Distribution Systems |
| Information Notice 1988-85, Broken Retaining Block Studs on Anchor Darling Check Valves | 14 October 1988 | Broken Retaining Block Studs on Anchor Darling Check Valves |
| Information Notice 1987-08, Degraded Motor Leads in Limitorque DC Motor Operators | 4 February 1987 | Degraded Motor Leads in Limitorque DC Motor Operators |
| ML19353A341 | 26 November 1980 | Responds to IE Bulletin 80-21 Re Valve Yolks Supplied by Malcolm Foundary Co,Inc.No Such Yolks Used in Facility. Valve Documentation Indicates Other Foundaries Made Valve Yolks in Use |