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 Issue dateTitleTopic
ML20038B18110 November 1981Final Deficiency Rept Re Vol Control Tank Level Control Sys, Initially Reported 810724.Operator Has Sufficient Time to Prevent Loss of Suction to Changing Points If One Level Control Sys Malfunctions.Procedures Revised
ML20040E28929 January 1982Rept,Geologic Investigation of Solution Features,Byron Station-Units 1 & 2,Comm Ed.
ML20040F7401 February 1982Part 21 Rept Re Strainer Basket in Diesel Generator Lube Oil Strainer Mfg by Zurn Industries.Mesh Liner Tears Loose at Basket Top & Disintegrates.Baskets to Be Replaced in All Facilities W/New Qualified Design in 6 Months
ML20042E1566 April 1990LER 90-003-00:on 900307,individual Cell Voltage for Cell 53 Found to Be at 2.11 Volts,Contrary to Tech Spec Limit.Caused by Electrician Using Improper Acceptance Criteria Format & Inadequate Mgt Review of surveillance.W/900406 Ltr
ML20042E31131 March 1990Monthly Operating Repts for Mar 1990 for Byron Nuclear Power Station Units 1 & 2.W/900410 Ltr
ML20042E91331 March 1990Nonproprietary Rev 1 to Steam Generator Tube Rupture Analysis for Byron & Braidwood Plants.
ML20042G9128 May 1990LER 87-012-01:on 870408,component Cooling Pump 1A Tripped When Surge Tank Level Dropped to Low Level Pump Trip Setpoint.Caused by Breakdown in Communication.Mod to Component Cooling Sys completed.W/900507 Ltr
ML20043A35231 March 1990Corrected Operating Data Rept for Mar 1990 for Byron Station Unit 1
ML20043A35530 April 1990Monthly Operating Repts for Apr 1990 for Byron Station Units 1 & 2
ML20043D5841 June 1990LER 90-006-00:on 900503,as Surveillance Underway All Indication on Digital electro-hydraulic Computer Panel Was Lost.Caused by Failure of Ampere Fuse Due to Short Circuit in Pushbutton.Lighting Circuit rewired.W/900530 Ltr
ML20043H06431 May 1990Monthly Operating Rept for May 1990 for Byron Nuclear Power Station.W/900612 Ltr
ML20044A96431 July 1990Rev 0 to Comm Ed Topical Rept on Benchmark of PWR Nuclear Design Methods Using PHOENIX-P & Advanced Nodal Code (Anc) Computer Codes.
ML20044A98711 July 1990LER 89-005-01:on 890501,diesel Generator 1A Failed to Load to 5,500 Kw within 60 as Required.Caused by Max Fuel Setting on Fuel Control Sys Being Set Too Low.Vendor Instructions Added to Maint procedures.W/900629 Ltr
ML20044B09912 July 1990LER 90-007-00:on 900612,discovered That Steam Line Isolation Handswitch on Main Control Board Panel 1PM06J Not Tested During Past Refueling Outages.Caused by Deficient Procedure. All Similar Equipment Will Be reviewed.W/900712 Ltr
ML20044C19128 February 1993Monthly Operating Repts for Feb 1993 for Byron Nuclear Power Station,Units 1 & 2.W/930311 LtrOffsite Dose Calculation Manual
ML20044D83030 April 1993Monthly Operating Repts for Apr 1993 for Byron Nuclear Power Station,Units 1 & 2.W/930506 Ltr
ML20044F12931 March 1993Monthly Operating Repts for Mar 1993 for Byron Nuclear Power Station Units 1 & 2.W/930406 Ltr
ML20045A6944 June 1993LER 93-003-00:on 930511,turbine Emergency Trip Oil Header Pressure Low Alert Received Followed by Reactor Trip & Turbine Trip Above P-8.Caused by Actuation of Overspeed Trip Relay.Faulty Power Supply Board replaced.W/930604 Ltr
ML20045C17731 May 1993Monthly Operating Repts for May 1993 for Byron Nuclear Power Station,Units 1 & 2.W/930608 Ltr
ML20046A12330 June 1993Monthly Operating Repts for June 1993 for Byron Nuclear Power Station,Units 1 & 2.W/930706 Ltr
ML20052H67030 April 1982to Byron Units 1 & 2,Braidwood Units 1 & 2 Auxiliary Feedwater Sys Reliability Analysis, Final Rept
ML20052H90811 May 1982Final Deficiency Rept Re Diesel Generator Strainer Basket Defect,Initially Reported on 820423.New Basket Designed & Tested & Will Be Installed Prior to Fuel Load
ML20054F07030 April 1982Bryon/Braidwood Stations - Units 1 & 2,Inadequate Core Cooling Detection Sys Summary Status ReptSafe Shutdown
Fuel cladding
ML20054F3936 June 1982Revised Pages to CE-1-A,Revision 21, QA Topical Rept
ML20054K97829 June 1982Deficiency Rept 82-02 Re Synchroscope Wiring Error,Initially Reported 820601.Primary Connections of Potential Transformer Connected to C/B Phases Instead of A/B Phases.Connection on 4.16-kV Bus Tie 141-241 Transformer Corrected
ML20054L57925 June 1982Probabilistic Evaluation of High Pressure Liquid Challenges to Safety/Relief Valves in Zion,Byron/Braidwood PWR Plants
ML20055G34627 June 1990Ro:On 900412,engine Tripped Due to Spurious High Jacket Water Temp Trip Valve Actuation During Partial Surviellance to Verify Operability of Diesel Generator 2A.Nuclear Work Request Initiated to Repair or Replace Trip Valve
ML20056D49227 July 1993Safety Evaluation Re Fuel Reconstitution
ML20056D62931 July 1993Monthly Operating Repts for Jul 1993 for Byron Nuclear Power Station,Units 1 & 2
ML20056D89531 May 1993Nonproprietary Rev 1 to WCAP-13699, Laser Welded Sleeves for 3/4 Inch Diameter Tube Feedring Type & Westinghouse Preheater SgsBoric Acid
Non-Destructive Examination
Hydrostatic
Finite Element Analysis
Intergranular Stress Corrosion Cracking
Stress corrosion cracking
Eddy Current Testing
Liquid penetrant
Flow Induced Vibration
ML20056E27717 August 1993Rev 64 to Topical Rept CE-1-A, Comm Ed QA Manual
ML20058A3681 October 1990Deviation Investigation Rept 90-026-00:on 900815,EDG 2A Cylinder 10L Dislocated Pushrod Due to Collapsed Hydraulic Lifter
ML20058A98116 November 1993Commonwealth Edison Briefing to NRR Personnel
ML20058H91231 August 1990Revised Monthly Operating Rept for Aug 1990 for Byron Nuclear Power Station
ML20058H91730 September 1990Revised Monthly Operating Rept for Sept 1990 for Byron Nuclear Power Station
ML20058H92131 October 1990Monthly Operating Repts for Oct 1990 for Byron Nuclear Power Station
ML20058L9966 August 1990Safety Evaluation Denying Licensee Response to Station Blackout Rule.Staff Recommends That Licensee Reevaluate Areas of Concern Identified in SERSafe Shutdown
Emergency Lighting
ML20058M0006 August 1990Safety Evaluation Denying Licensee Response to Station Blackout Rule.Staff Recommends That Licensee Reevaluate Areas of Concern Identified in SERSafe Shutdown
Manual Operator Action
ML20059A29720 October 1993Cycle 5 Operating Limit Rept -Fxy Portion
ML20059E28730 December 1993Safety Evaluation Supporting Amends 57,57,45,45,93,77,152 & 140 to Licenses NPF-37,NPF-66,NPF-72,NPF-77,NPF-11,NPF-18, DPR-39 & DPR-48 Respectively
ML20059K92131 October 1993Monthly Operating Repts for Oct 1993 for Byron Nuclear Power Station Units 1 & 2
ML20059L33714 September 1990SER Granting Interim Relief for 1 Yr or Until Next Refueling Outage to Continue Current Testing Methods While Licensee Investigates Feasibility of Acceptable Alternatives
ML20059L45814 September 1990Sser Supporting Util Changes to Inservice Testing ProgramSafe Shutdown
Boric Acid
Stroke time
ML20059L66710 September 1990Inservice Insp Program,Byron Station Units 1 & 2Boric Acid
High Radiation Area
VT-2
Scaffolding
ML20059L98611 November 1993Part 21 Rept Re Deviation Wherein Fully Open Butterfly Valve Located 15 Pipe Diameters Upstream of Sensors Was Disturbing Flow Profile Enough to Cause Ultrasonic Meter to Indicate 3 to 4% Low.Customers Notified & Valve Removed
ML20062C33130 September 1990Monthly Operating Repts for Sept 1990 for Byron Nuclear Power Station
ML20062G4683 August 1982Interim Deficiency Rept Re Potential for Fire Dampers Not to Close When Fusible Link Separates.Initially Reported on 820701.All Curtain Type Fire Dampers W/C Type Fusible Links Will Be Reworked Prior to Fuel Load
ML20062G9002 August 1982Interim Deficiency Rept Re Emergency Diesel Generator Field Relay Failure.Initially Reported on 820702.One Contact on Relay 14FX Found Fused Closed.Relay Replaced.Final Rept Expected by 820902
ML20062K68930 November 1993Monthly Operating Repts for Nov 1993 Byron Nuclear Power Station
ML20062N82531 December 1993Monthly Operating Repts for Dec 1993 for Byron Nuclear StationOffsite Dose Calculation Manual
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