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 Issue dateTitleTopic
ML19354D89131 December 1989Monthly Operating Rept for Dec 1989 for Seabrook Station Unit 1.W/900112 Ltr
ML20003A4116 November 1980Interim Deficiency Rept Re Cooling Tower Concrete Beams, Initially Reported 801008.Determination of Reportability Will Be Completed by 810216
ML20003B6031 December 1980Interim Deficiency Rept Re Problem W/Westinghouse 3-inch Motor Operated Gate Valves,Initially Reported on 801030. Testing in Progress to Determine Cause of Problem & Corrective Action Needed.Updated Rept Will Follow
ML20003C82323 February 1981Interim Deficiency Rept Re Improper Nondestructive Exams, Initially Reported on 810126.Upon Completion of Investigation,Util Will Determine Reportability Under 10CFR50.55e.Next Rept Will Be Forwarded by 810327Nondestructive Examination
ML20005A59318 June 1981Interim Deficiency Rept Re Vol Control Tank Level Instrumentation Control Sys,Initially Reported 810521.Plant Procedures Will Be Reviewed to Assure That Operator Will Be Alerted to Take Appropriate Action
ML20005A87425 June 1981Interim Deficiency Rept,Originally Reported on 810526,re Unspecified Weld Lengths in Support Design Drawings.Cause Unknown.New Support Details Will Identify Min Weld Length. Support Drawing Review Will Be Completed on 810731
ML20005E24629 December 1989LER 89-014-00:on 891129,auxiliary Transformer Supply Breaker to Vital Bus E5 Tripped When Remote Manual Override Relay Energized.Caused by Procedure Inadequacies in Procedure 0S1048.01.Procedure revised.W/891229 Ltr
ML20005G42128 February 1989Reactor Vessel Heatup & Cooldown Limit Curves for Normal Operation.Hydrostatic
ML20005G6835 January 1990Part 21 Rept Re Installation Instructions for Grommet Use Range for Patel Conduit Seal P/N 841206.Conduit Seals in Environ Qualification Applications Inspected for Proper Wire Use Range & Grommets Replaced
ML20006A82310 January 1990Errata to Rev 3 to BAW-1543, Master Integrated Reactor Vessel Surveillance Program Consisting of Revised Tables 3-20 & E-1
ML20006C46330 September 1985Flow Measurements,Seabrook Unit 1,Seabrook,NH,Circulating Water Pumps.Grab sample
ML20006E1738 February 1990LER 90-002-00:on 900109,discovered That Auxiliary Sample Pump Used to Satisfy Action Requirements of Tech Spec Was Not Operating.Caused by Dislodged Power Fuse.Pump Relocated & Caution Tape Installed to Protect pump.W/900208 Ltr
ML20006E1808 February 1990LER 90-001-00:on 900109,wide Range Gas Monitor Low Range Pump Found to Be Inoperable,Resulting in Noncompliance W/ Tech Specs.Caused by Regulator Isolation Valves Being Left in Open Position.Walkdown of Skids conducted.W/900208 Ltr
ML20006E45915 February 1990LER 90-003-00:on 900116,wide-range Gas Monitor Low Range Pump Found Inoperable.Caused by Failed Pump Diaphragm Weakened by High Flow Condition.Ruptured Pump Diaphragm Replaced & Pump Returned to Normal operations.W/900215 Ltr
ML20006F08431 January 1990Monthly Operating Rept for Jan 1990 for Seabrook Station Unit 1.W/900215 Ltr
ML20009E96017 July 1981Interim Deficiency Rept Re Westinghouse 4 Inch Through 18 Inch Motor Operated Gate Valves,Initially Reported on 810313.Valve Tests Expected to Be Complete in Early 1982. Final Rept Will Be Submitted by June 1982
ML20009F27721 July 1981Annual Financial Rept 1980.Supporting Documentation Encl
ML20009F2792 February 1981Annual Financial Rept 1980.Supporting Documentation Encl
ML20009F28021 July 1981Annual Financial Rept 1980.Supporting Documentation EnclIncorporated by reference
ML20009F28121 July 1981Annual Financial Rept 1980.Supporting Documentation Encl
ML20009F28228 February 1981Annual Financial Rept 1980.Supporting Documentation Encl
ML20009F28316 March 1981Annual Financial Rept 1980.Supporting Documentation Encl
ML20009F28521 July 1981Annual Financial Rept 1980.Supporting Documentation Encl
ML20009F28610 March 1981Annual Financial Rept 1980.Supporting Documentation EnclIncorporated by reference
ML20009F28721 July 1981Annual Financial Rept 1980.Supporting Documentation Encl
ML20009F28921 July 1981Annual Financial Rept 1980.Supporting Documentation Encl
ML20009F29117 February 1981Annual Financial Rept 1980.Supporting Documentation EnclIncorporated by reference
ML20009F2935 January 1981Annual Financial Rept 1980.Supporting Documentation EnclIncorporated by reference
ML20010C6917 August 1981Part 21 Rept Re Potential Defect on Cable Tray Supports. Applicable Strut Fitting Configurations Based on Incorrect Load Tables Will Be Identified.Applicable Allowable Loads Will Be Determined.Completion Expected by 811115
ML20011D43819 December 1989LER 89-011-01:on 890905,three Unsealed Piping Penetrations in Condensate Storage Tank Encl Identified.Caused by Failure to Transfer Sealing Requirements Into Detail Drawings.Penetrations sealed.W/891219 LtrSafe Shutdown
Fire Barrier
Hydrostatic
Tornado Missile Protection
Fire Watch
ML20011D49921 December 1989Ro:On 891201,containment post-LOCA Area Radiation Monitor 1-RM-6576A Inoperable for More than 7 Days to Implement Design Change on Power Source.Plant Remained in Cold Shutdown for Duration of Equipment Outage
ML20011D75030 November 1989Monthly Operating Rept for Nov 1989 for Seabrook Station Unit 1.W/891215 Ltr
ML20011F19422 February 1990Part 21 Rept Re Abb 27/59 Relay Catalog Series 211L.Solder Connections to Printed Wiring Runs on Bottom of Circuit Board Deteriorated Due to Thermal Stress.No Actual Failure Occurred & Relays to Be Changed at Next Outage
ML20011F46722 February 1990LER 90-004-00:on 900123,wide-range Gas Monitor Process Flow Rate Value for Vent Radiation Monitor Discovered at Default Instead of Actual Value.Caused by Personnel Error.Process Flow Restored & Technician counseled.W/900222 Ltr
ML20011F59722 February 1990Part 21 Rept Re Solder Connections in Abb 27/59 Relays Deteriorated Due to Thermal Stress,Causing Bonding of Printed Wiring Pattern to Glass Epoxy Circuit Board.Interim Circuit Board W/Larger Pads & Higher Wattage Will Be Used
ML20012A90127 February 1990Suppls 900213 10CFR21 Rept Re Chilled Water Sys Operation. Evaluation of Crystal River Determined That Postulated High Energy Line Break in Intermediate Bldg May Be Subj to Steam Loads Higher than Normal Loads,Causing Rising Water Temp
ML20012B4498 March 1990LER 90-006-00:on 900206,Train a Radiation Monitor Went Into High Alarm Condition,Resulting in Actuation of Control Room Emergency Air Cleanup & Filtration Subsystem.Caused by Mechanical Binding.Detector Tube remounted.W/900308 Ltr
ML20012C24612 March 1990LER 90-008-00:on 900209,latching Mechanism for Door Entering Containment Encl Bldg Failed,Rendering Emergency Air Cleanup Sys Inoperable.Plant Cooldown Initiated,Latching Mechanism Repaired & Door Returned to svc.W/900312 Ltr
ML20012C24812 March 1990LER 90-007-00:on 900208,when Source Check Removed from Control room,RM-6506B Entered High Alarm Condition,Causing ESF Actuation of Emergency Air Cleanup Sys.Caused by Mechanical Binding.Check Source replaced.W/900312 Ltr
ML20012D89721 March 1990Ro:On 900209,triaxial Seismic Response Spectrum Recorder 1-SM-XR-6708 Inoperable for More than 30 Days,Due to Relocation.Monitor Returned to Operable Status on 900315
ML20012E16030 September 1989Evaluation of Seabrook Station.Boric Acid
Shutdown Margin
Reactor Vessel Water Level
Coatings
Temporary Modification
Job Performance Measure
ML20012F5184 April 1990LER 90-010-00:on 900305,actuation of Control Room Emergency Air Cleanup & Filtration Subsystem Occurred.Caused by Moisture in Detector Housing.Air Intake Monitors Cleaned & Desiccant Placed in housing.W/900404 Ltr
ML20023D0301 July 1982Ro:Fire Dampers Supplied by American Warming & Ventilation, Inc Declared Inoperative.Caused by Discrepancy in Fuse Link Assembly Size.Fuse Assemblies Will Be Replaced.Jv Winkle Ltr Re News Telecast & J Dierbeck Note Encl
ML20023D03623 October 1981Deficiency Rept Re Errors & Discrepancies Contained in HVAC Matl Certifications.Procurement Documentation Will Be Revalidated,Document & Records Mgt Program Will Be Developed & Qa/Qc Personnel Will Be Added.Also Reportable Per Part 21
ML20023D0549 May 1983Second Interim Deficiency Rept Re Westinghouse Emd Gate Valve Position Indication.Initially Reported on 830110. Investigation Continuing.Detailed Description,Analysis of Safety Implications & Corrective Actions Expected by 830610
ML20023D14627 August 1982Rev 0 to Assessment of Stitch Weld Strength in HVAC Ductwork Const,Lasalle County Station Units 1 & 2.
ML20023D21325 August 1982Rev 1 to LaSalle County Station Technical Proposal, Including Scope of Work,Work Plan to Accomplish Independent HVAC Review,Organization Chart & Resumes of Personnel Assigned to Project.List of Matl Specs for HVAC Const EnclCoatings
Nondestructive Examination
Liquid penetrant
Scaffolding
ML20023D30616 May 1983Final Deficiency Rept Re DS-416 Reactor Trip Switchgear Malfunction.Initially Reported on 830422.Caused by Deviations from Breaker Internal Recommended Clearances. Manufacturer Drawings Modified
ML20023D35316 May 1983Interim Deficiency Rept Re Svc Water & Circulating Water Pump House Structural Inadequacy.Initially Reported on 830419.Detailed Engineering Evaluation Scheduled for Completion by 830722
ML20023D43529 April 1983Supplementary Part 21 Rept Re Adequacy of Svc Water Cooling Tower Structure.Transverse Shear Design Adequate.No Defects Exist.Design of Structure Mods Expected to Be Completed by 830630Ultimate heat sink
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