Static O-Ring
Static O-Ring# QUERY21b70799c92a795c211ce22a40174bb8
Static O-Ring# QUERYd86f64840ec7b5b4691a7429e0d083c8
ULNRC-03290, Forwards 10CFR50.59 Annual Rept Summarizing Written Safety Evaluations of Changes,Tests & Experiments Approved & Implemented for Activities at Plant
05000373/LER-2023-001, Low Pressure Core Spray Inoperable Due to Minimum Flow Valve Flow Pressure Switch Failure
1CAN032301, License Amendment Request to Modify the Arkansas Nuclear One, Unit 1, Technical Specification 3.3.1, Reactor Protection System Instrumentation, Turbine Trip Function on Low Control Oil Pressure
05000374/LER-1987-016-04, :on 870713,min Flow Switch FS-2E21-NOO4 Found Leaking Water Through Switch Internals.Failure Mechanism Under Investigation by Static O-Ring,Inc.Defective Switch Replaced
05000374/LER-1989-004-01, :on 890201,determined That Static O-Ring RHR Min Flow Switch Exceeded Rejection Limits During Instrument Surveillance.Reject & Flow Switches Replaced
L-86-315, Responds to IE Bulletin 86-002, Static O-Ring (Sor) Differential Pressure Switches. Insp Determined That Sor Series 102 & 103 Differential Pressure Switches Not Used in safety-related Applications
GO2-86-696, Forwards Details of Static O-Ring (Sor) Differential Pressure Switch Utilization,Per IE Bulletin 86-002, Static O-Ring Differential Pressure Switches, Dtd 860718.Four Sor Switches Utilized at Plant
GO2-86-101, Forwards 60-day Rept Per IE Bulletin 86-002 Re Static O-Ring (Sor) Differential Pressure Switches.Tests of Four Sor Switches Indicate That Instruments Exhibit well-defined Repeatable Shifts & No Further Special Testing Necessary
A05911, Responds to IE Bulletin 86-002, Static O-Ring Differential Pressure Switches. Switches Will Not Be Used in safety- Related Applications,Per 860703 Response to IE Info Notice 86-047, Erratic Behavior of Static O-Ring..
RBG-24-095, Advises That No Static O-Rings (Model 102 or 103 Differential Pressure Switches) Installed at Facility in safety-related Applications,In Response to IE Bulletin 86-002
U-600690, Responds to IE Bulletin 86-002 Re Static O-Ring Differential Pressure Switches.No Static O-Ring Model 102 or 103 Differential Pressure Switches Used as Electrical Equipment Important to Safety
05000374/LER-1986-018-07, :on 861209,RCIC Steam Line High Flow Isolation Switch PDS-2E31-N013BB Found Nonfunctional.Caused by Torn Diaphragm Inside Switch.New Static O-Ring Differential Pressure Switch Certified & Installed
DCL-86-222, Confirms That Static O-Ring Series 102-103 Differential Pressure Switches Not Used in safety-related Equipment,In Response to IE Bulletin 86-002, (Action Statement 1),per 10CFR50.49(b).Action Statements 2-6 Inapplicable
0CAN078612, Informs That Util Does Not Utilize Series 102 or 103 Static O-Ring Differential Pressure Switches,Based on Reviews Performed Per 860610 IE Info Notice 86-047 & 860718 IE Bulletin 86-002.Bulletin Requirements Met
PNP 2016-049, License Amendment Request: Control Rod Drive Exercise Surveillance
05000219/LER-1986-007-01, :on 860327,plant Shutdown Conducted Due to Repeatability/Drift Problems W/Reactor Low Water Level Scram Switches.Cause Unknown.Static O-ring Switches Replaced.W/
JAFP-86-0633, Responds to IE Bulletin 86-002, Static O-Ring Differential Pressure Switches. No Switches Installed in safety-related Sys or Planned for Installation
A05836, Responds to IE Info Notice 86-047, Erratic Behavior of Static O-Ring Differential Pressure Switches. Based on Util Investigations,Switches Not Used in Integrated Safety Application.Issue Inapplicable to Plants
SVP-99-102, Summary Rept of Changes,Tests & Experiments Completed, Covering Period 990201-0430. with
NG-86-2590, Response to IE Bulletin 86-002,Item 1 Re Static O-ring Differential Pressure Switches.Series 102 or 103 Pressure Switches Not Installed at Facility
05000245/LER-1990-018-01, :on 901212,discovered That Condenser Vacuum Switches Out of Tolerance Due to Instrument Drift.Barksdale Condenser Low Vacuum Scram Pressure Switches Replaced W/ Static O-Ring Pressure Switches
05000369/LER-1992-011, :on 921210,pressure Switches 2CAPS-5380 & 5381 Found Outside Specified Setpoint Limit Due to Inoperable ESFAS Instrumentation.Subj Switches Recalibr to Correct Values
05000321/LER-1981-112-03, Torus to Rx Bldg Differential Pressure Switches 1T48-N210,N211,2T48-N210 & N211 Proof Press Not within Tech Spec Limit.Caused by Switch Misapplication.Also Reported Per Part 21
05000259/LER-1984-002-05, :on 840103,setpoint Value of Pressure Switches PS-64-57A-D Found Above Tech Spec 3.2.B. Limits.Caused by Static O-ring Model 12N-AA4 Setpoint Drift.Switches Recalibr.Surveillance Test Revised
05000260/LER-1983-015-03, /03L-0:on 830406,drywell Pressure Switch 2-PS-64-57A Found Operating Above Tech Spec Limit.Caused by Setpoint Drift.Static O-ring Switch,Model 12N-AA4,recalibr, Tested & Returned to Svc
05000260/LER-1983-016-03, /03L-0:on 830406,drywell Pressure Switches 2-PS-64-58D,SW 1 & 2 Found to Operate at Setting Exceeding Tech Spec Limit.Caused by Setpoint Drift.Static O-ring Switch 12N-AA4 Recalibr
05000296/LER-1982-055-03, Pressure Switch PS-3-204D Found W/Setpoint of 1,125.9 Psig.Caused by Calibr Drift. Static O-ring Model 9N-AA45-X9-TT Pressure Switch Recalibr
05000321/LER-1981-112-01, /01T-0:on 811009,during steady-state Power, Discovered Torus to Reactor Containment Bldg Differential Pressure Switches & Static O-ring Had Proof Pressures of 10 & 20 Psig.Caused by Switch Misapplication
05000366/LER-1981-079-03, /03L-0:on 810822,torus-to-atmosphere Hi Data Processing Switch 2T48-N210 Found to Actuate Above Tech Spec Limit During Static O-ring Pressure Switch Calibr HNP-2-5240.Caused by Setpoint Drift.Switch Recalibr
05000346/LER-1980-034-03, /03L-0:on 800411,during Auxiliary Feed Pump Instrumentation Calibr Test,Turbine 1 Steam Inlet Pressure Switch PSL-106B Actuated at Pressure Above Setpoint.Caused by Failure of Static O-ring Pressure Switch
L-81-159, Submits Correction to Re post-TMI Dead Band Requirements for Static O-ring Containment Isolation Signal Phase a Switches
AEP-NRC-2014-50, Response to Regulatory Issue Summary 2014-07 Enhancements to the Vendor Inspection Program - Vendor Information Request
1CAN028406, Application for Amend to License DPR-51,revising Tech Specs Re Low Temp Overpressure Protection Sys,Per NRC 830826 & 1104 Requests
L-MT-08-042, Extended Power Uprate: Acceptance Review Supplemental Information Package 5
05000373/LER-2005-003, Regarding Main Steam Line High Flow Main Steam Isolation Valve Isolation Differential Pressure Switches Failed Due to Manufacturing Error