Automatic Switch Co
Automatic Switch Co# QUERY38140b5396e3d137698c0a376f380c92
Automatic Switch Co# QUERY852772815e9c1520435cf950a8c5db0b
TXX-6746, Final Deficiency Rept CP-87-60 Re Automatic Switch Co Solenoid Valves Which May Not Be Qualified When Utilized in Harsh Environ.Initially Reported on 870820.Testing Revealed Valves Qualified W/O Exhaust Port Elbows
PNO-III-87-153, on 871216,during Testing of Closing Function of Eight Msivs,Outboard MSIV on Steam Line C Opened, Indicating Fast Closure Solenoid Malfunctioned.Solenoids Replaced on Affected Misv.Investigation Continuing
AECM-85-0096, Part 21 & Interim Deficiency Rept 85/30 Re MSIV Failure to Remain in Closed Position Due to Failure of Automatic Switch Co Dual Solenoid.Initially Reported on 850321.Listed Matl Nonconformance Rept Issued.Updated Rept Expected by 850430
AECM-90-0196, Final Part 21 Rept Re Automatic Switch Co MSIVs Failing to Close Upon Demand from Automatic & Remote Manual Actuation Signals.Initially Reported on 890914.Dual Solenoid Valves Replaced W/Two Single Solenoid Valves
A06281, Forwards Requested Info to Sufficiently Demonstrate Adequacy of Alternate Rod Insertion Sys,Reactor Coolant Recirculation Pump Trip & Standby Liquid Control Sys,Per 10CFR50.62
05000440/LER-1986-030, :on 860630,one Vacuum Relief Valve in Containment Vacuum Relief Sys Opened Due to Vacuum Caused by Operation of Containment Vessel & Drywell Purge Sys.Caused by Equipment Malfunction.Valve Replaced
05000260/LER-1985-016-02, :on 850606,excessive Setpoint Drift Discovered During Bench Testing.On 850722,factory Testing by Automatic Switch Co Confirmed TVA Test Data.Four Switches Returned to Factory
AECM-85-0142, Part 21 & Second Interim Deficiency Rept RD-85/03 Re MSIV Failure to Remain Closed Due to Failure of Automatic Switch Co Dual Solenoid to Transfer When Deenergized.Initially Reported on 850321.Next Rept by 850630
05000416/LER-1994-006, :on 940528,identified That Scram Times for Two Control Rods Were Not Acceptable as Defined by Ts.Caused by Defect in Preassembled Top Head Assemblies.Ggns Has Completed Testing & Replacement of Top Head
AECM-83-0561, Part 21 Rept 2 Re Improperly Assembled Automatic Switch Co Spare Part Kits for Scram Pilot Valve Solenoids.Initially Reported on 830804.Investigation Continuing.Final Rept Will Be Provided by 840224
05000416/LER-1994-006-02, :on 940528,scram Time Testing of Control Rods, Plant Personnel Identified That Scram Times for Two Control Rods Were Not Acceptable.Caused by Defect in Seating Material.Rods Were Retested & Returned to Svc
05000271/LER-1993-005, :on 930406,concluded Control Rod Scram Times Not in Compliance W/Ts Section 3.3.C.Caused by Faulty Scram Solenoid Pilot Valves.Solenoid Valves Rebuilt
05000445/LER-1990-017, :on 900527,main Feedwater Flow Control Valve Failed Closed,Resulting in Reduced Feedwater Flow & Decreasing Steam Generator Water Level.Caused by Failure of Solenoid Valve Coil.Solenoid Coil Replaced
GO2-81-341, Responds to IE Bulletin 80-21 Re Valve Yokes Supplied by Malcolm Foundry Co,Inc.No Malcolm Foundry Components Used by Manufacturers or Contractors as Supply Source.Manpower Estimate & List of Manufacturers Encl
05000322/LER-1989-009, :on 891115,notification Received of Potential Failure Mechanism of Four 3-way Solenoid Operated Pilot Valves.Caused by Incorrect Mounting of Valves.Valves Remounted Vertically & Field Walkdown Done
05000280/LER-1979-018-01, /01T-0 on 790509:solenoid Valve Model 8320A102 Mfg by Automatic Switch Co Found Environmentally Unqualified & Reportable Per IE Bulletin 79-01 & Tech Specs.Valve Could Fail to Control Admission & Venting of Air During LOCA
05000250/LER-1994-001, :on 940119,three Surveillance Failures Were Caused by Failure of Solenoids to Change Position When de-energized.Changed Solenoid Valves from de-energize to Actuate to Energize to Actuate Configuration
05000316/LER-1993-003, :on 921016,discovered That Charcoal Filter Face Dampers Were Closed Instead of Open as Indicated.Caused by Incorrect Solenoid Installation.Procedures Revised & Dampers Verified to Be Installed Correctly
05000249/LER-1977-019, Regarding CRD H-9 Being Determined to Exhibit a 90% Insertion Scram Time in Excess of 7.0 Seconds
05000206/LER-1989-026, :on 890823,charging Isolation Valve CV-304 Failed to Close When Close Signal Received,Rendering Valve Inoperable.Caused by Failure of Automatic Switch Co three-way Solenoid Air Valve.Valve Replaced
Information Notice 1993-77, Human Errors That Result in Inadvertent Transfers of Special Nuclear Material at Fuel Cycle Facilities
Information Notice 1989-66, Qualification Life of Solenoid Valves
Information Notice 1980-11, Generic Problems with Asco Valves in Nuclear Applications Including Fire Protection Systems
Information Notice 1985-08, Industry Experience on Certain Materials Used in Safety-Related Equipment
05000206/LER-1987-016-02, :on 871110,Automatic Switch Co Solenoid Valve Failures Occurred.Caused by Thin Hard Film Between Top of Slug & Housing.Root Cause Evaluation Continuing.Further Testing Performed