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{
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	Issue date	Title	Topic
ML17299A309	10 May 1985	Ro:On 850505,plant Security Sys Did Not Return to Svc as Expected After Planned Electrical Outage.Security Compensatory Measures Established Per Station Security Plan. Event Determined Not Reportable Under 10CFR73.71
ML17299A356	24 May 1985	Special Rept:On 850424,72-h Action Statement for Operability of Containment Area Radiation Monitors RU-148 & RU-149 Exceeded.Justification for Interim Operation Submitted by Licensee.Detectors Will Be Installed by 850731
ML17299A367	25 May 1985	Special Rept:On 850425,diesel Generator a Determined Inoperable Due to Start Failure While Testing Oscillographic Device.Caused by Oil in Control Air Sys.Fuel Rack Cylinder Shaft Thoroughly Cleaned.Generator Tested Satisfactorily
ML17299A384	10 June 1985	Special Rept Re 850509 Failure of Diesel Generator to Start. Caused by Failure of turbo-charger Manifold Temp Control Valve in Vent to Atmosphere Position & Major Starting Air Sys Leak.Control Air Supply Plugged to Temp Control Valves	Temporary Modification
ML17299A413	5 June 1985	Special Rept:On 850426,72 H Action Statement for Inoperability of Condenser Evacuation Sys high-range Noble Gas Activity Monitor Exceeded.Caused by Failure of Associated Sample Pump.Setpoint Adjusted
ML17299A429	25 June 1985	Special Rept:On 850526,containment Atmosphere Radiation Monitor RU-1 Particulate Channel Declared Inoperable.Caused by Misunderstanding of Channel Operation.Radiation Protection Dept Procedures Revised	Grab sample
ML17299A465	19 July 1985	Special Rept 1-SR-85-013:on 850618,diesel Generator B Failed to Start within 10 Acceptance Criteria of Surveillance Test 41ST-1DG02.Cause Not Determined.Valves Inspected & Cleaned
ML17299A495	7 August 1985	Special Rept 1-SR-85-014:on 850708,containment High Range Monitor RU-149 Declared Inoperable Due to Erroneous Readings.Caused by Exceeding 72 H Action Statement for Operability of Monitor.Circuit Board Replaced
ML17299A708	25 October 1985	RO-1-SR-85-025:on 851024,reactor Trip Resulted from Low Steam Generator Level Signal Following Turbine Trip.Caused by High Pressure Pulse Initiated by Rapid Closure of Turbine Throttle.Safety Injection Signal Reset
ML17299A709	25 October 1985	Special Rept 1-SR-85-018:on 850925,condenser Evacuation Sys High Range Monitor RU-142 Inoperable for More than 72 H. Caused by Random Loss of Stored Data.Schedule Being Developed to Resolve Problem
ML17299A764	15 November 1985	Special Rept 1-SR-85-024 & Suppl to Special Rept 1-SR-85-018:on 851013,condenser Evacuation Sys Radiation Monitor Noble Gas Channel Declared Inoperable.Flow Rate Being Estimatd Every 4 H Per Tech Spec Table 3.3-13
ML17299A856	2 December 1985	Special Rept (1-SR-85-027):on 851030,diesel Generator a Failed to Start from Control Room While Performing Surveillance Test Procedure 41ST-1DG01.Caused by Faulty Fiber Optic Cable.Cable Replaced
ML17299A857	2 December 1985	Special Rept 1-SR-85-030:on 851028,containment high-range Radiation Monitor RU-149 Inoperable for More than 72 H. Caused by Spurious High Radiation Alarms Coincident W/ Spurious Detector Failure Alarms.Addl Rept by 851230
ML17300A270	17 July 1986	Special Rept 1-SR-86-079:on 860712,Channel a & B Steam Generator 2 Tripped on Low Reactor Coolant Flow,Initiating Reactor Trip.Cause Under Investigation.Ler Will Be Submitted within 30 Days
ML17300A392	23 June 1986	Corrected Special Rept 1-SR-86-071:on 860513,Unit 1 Steam Generator 1A & 2B Sensors Experienced Excessive Alarms.On 860616,Unit 2 Steam Generator 1A Sensor Emitted Spurious Alarms.Caused by Improper Alarm Setpoints
ML17300A712	20 March 1987	Ro:On 861104,MSIV SGE-UV-1709 Opened,Causing Cooldown of Rcs.Valve Closed & Plant Stabilized.Occurrence Could Not Be Duplicated.No Problems W/Valve Identified.Removal of Fast Open Circuitry After Installation of Valves Verified	Stroke time
ML17300A746	30 March 1987	Special Rept 1-SR-87-014:on 870212,containment Bldg Area Radiation Monitor RU-148 Declared Inoperable Due to Implementation of Plant Change Package 85-01-SQ-039-00. Monitor RU-148 Returned to Svc on 870306
ML17300A748	30 March 1987	Special Rept 2-SR-87-007:on 870312,time Limit for Restoring Channel of Reactor Vessel Water Level Instrumentation Exceeded.Cause of Inoperability Under Investigation.Channel Expected to Be Returned to Svc at Next Refueling Outage	Reactor Vessel Water Level
ML17300A751	1 April 1987	Special Rept 1-SR-87-013:on 870130,while in Mode 5,fuel Bldg Ventilation Sys Low Range Monitor RU-145 Declared Inoperable Due to Alarms.On 870304,while in Mode 3,monitor RU-146 Declared Inoperable.No Cause Identified
ML17300A753	26 March 1987	Special Rept 1-SR-87-011:on 870228,72 H Limit for Inoperability of High Range Noble Gas Activity Monitor RU-144 Was Exceeded.Caused by Removal of RU-144 for Testing for Associated RU-143 Monitor.Monitor Returned to Svc
ML17300A754	30 March 1987	Special Rept 1-SR-87-010:on 870224,condenser Evacuation Sys high-range Radiation Monitors Declared Inoperable When Continuous Low Flow Alarms Received.Caused by Water in Sample Tube.Boards Replaced & Monitors Retested
ML17300A755	30 March 1987	Special Rept 1-SR-87-012:on 870302,following Cleaning of Contacts,Diesel Generator a Failed to Start in Emergency Mode.Caused by Defective Power Resistor.Root Cause of Failure Data Sheet Initiated & Further Action Will Be Taken
ML17300A756	30 March 1987	Special Rept 2-SR-87-006:on 870309,radiation Monitor RU-139B Continuously Alarmed Due to Erroneous High Radiation Levels. Caused by Broken Wire in Microcomputer Preamplifier. Preamplifier Replaced & Root Cause of Failure Initiated
ML17300A761	30 March 1987	Special Rept 1-SR-87-016:on 870303,Tech Spec 3.3.3.6 Action 32 Entered Due to Inoperability of Both Channels of Reactor Vessel Water Level Instrumentation.On 870305,time for Restoring Channels to Svc Exceeded.Cause Unknown	Reactor Vessel Water Level
ML17300A762	30 March 1987	Special Rept 2-SR-87-004:on 870305,low & High Range Noble Gas Activity Monitors Inoperable for More than 72 H.Caused by Failure of Flow Control Valve Coupling to Perform Intended Function.Coupling Replaced
ML17300A764	3 April 1987	Special Rept 2-SR-87-005:on 870308,high-range Noble Gas Activity Monitor RU-146 Inoperable for Greater than 72 H. Caused by Random Cycling Alarms to Microcomputer Software. Plant Change Request PCR 87-13-SQ-020 Initiated
ML17300A776	17 April 1987	Special Rept 1-SR-87-015:on 870408,30-day Action Statement for Operability of Seismic Monitoring Sys Exceeded.Caused by Ribbon Cable Wire Separating from Connector.Cable Repaired	Earthquake
ML17300A825	4 May 1987	Special Rept 2-SR-87-008:on 870406,condenser Evacuation Sys Radioactive Gaseous Effluent monitors,low-range RU-141 & high-range RU-142 Declared Inoperable for Greater than 72 H. Water Found in RU-141 Due to Holes in Detector Mylar
ML17300A855	15 May 1987	Special Rept 2-SR-87-012:on 870416,Containment Bldg Atmosphere RU-1 Declared Inoperable Due to Ground Identified in Monitor.Check for Grounds Conducted But No Grounds Found. Functional Test Performed & Monitor Returned to Operation
ML17300A860	18 May 1987	Special Rept 1-SR-87-017:on 870419,containment Bldg Area Radiation Monitor (RU-149) Declared Inoperable Due to Spurious Detector Failure Alarms.Cause Undetermined. Surveillance Testing Conducted & RU-149 Restored
ML17300A867	18 May 1987	Special Rept 2-SR-87-013:on 870421,process Monitor RU-1 Inoperable for More than 72 H Due to Frequent Failure Alarms.Caused by Voltage Spikes on Grounding Sys.Mod Initiated to Replace Moving Filter Assembly W/Fixed Filter
ML17300A868	22 May 1987	Special Rept 2-SR-87-014:on 870426,radioactive Gaseous Effluent Monitors RU-144 Inoperable for More than 72 H. Caused by Test Performance & Subsequent Gm Detector Failure. Monitor Will Be Returned to Svc by 870529	Temporary Modification
ML17300A941	22 June 1987	Special Rept 2-SR-87-018:on 870523,high & Low Range Noble Gas Activity Monitors Inoperable for Greater than 72 H. Caused by Defective Amplifier Displacement Card Which Caused Low Readings.Card Replaced
ML17300A979	3 August 1987	Special Rept 2-SR-87-023:on 870717,condenser Vacuum Pump/ Gland Seal Exhaust Monitors Inoperable for Greater than 72 H.Caused by Broken Directional Wire.Mod/Design Enchancement Currently Being Evaluated.Monitors Restored
ML17300B037	1 September 1987	Special Rept 2-SR-87-022:on 870828,unusual Event Declared Due to Release in Excess of 6.62 E-4 Mci Per Cubic Centimeter.Cause Under Investigation.Corrective Action Will Be Developed Based on Investigation Results
ML17300B068	14 October 1987	Special Rept 2-SR-87-024:on 870915,fuel Bldg B Vent Exhaust Low & High Range Monitors Declared Inoperable & Placed in Bypass Due to Problems W/Recurrent Voltage Spiking & False Background Readings.Engineering Evaluation Underway	Grab sample
ML17300B134	14 December 1987	Special Rept 1-SR-87-025:on 871205,insp Resulted in Plugging of II Tubes in Steam Generator 1 & One Tube in Steam Generator 2
ML17300B137	14 December 1987	Special Rept 1-SR-87-024:on 871120,plant Vent high-range Gaseous Activity Monitor RU-144 Inoperable for More than 72 H.Caused by Detector Aging.Detector Replaced & Calibr
ML17300B156	24 December 1987	Special Rept 2-SR-87-029:on 871126,high Range Noble Gas Monitor (RU-142) Found Inoperable for More than 72 H.Caused by Water in RU-141 Sample Line.Moisture Traps Will Be Installed in Sample Lines During Next Refueling Outage	Grab sample
ML17300B182	25 January 1988	Special Rept 3-SR-87-006:on 880117,loose-part Instrumentation Inoperable for More than 30 Days.Calibr Will Be Performed by End of First Outage.Periodic Audio Check Will Be Performed Until Instrument Operable
ML17300B209	16 February 1988	Special Rept 1-SR-88-001:on 880122,72 H Limit for High Range Noble Gas Monitor RU-142 Inoperability Exceeded.Caused by Defective Low Voltage Power Supply for RU-142 Microcomputer. Replacement Power Supply Installed & Calibr
ML17300B231	28 December 1989	Special Rept 2-SR-89-010:on 891124,Tech 3.3.1,Action 28 Violated.Caused by 7-day Limit of Initiation of Preplanned Alternate Sampling Program Exceeded.Preventive Maint Completed.Leaking Valves Replaced & Pump Ordered
ML17300B232	21 December 1989	Suppl 1 to Special Rept 3-SR-89-003:on 890215,72 H Limit for Inoperability of Condenser Evacuation Sys high-range Effluent Monitor (RU-142)exceeded.Design of Subj Evacuation Sys Reviewed & Addl Electric Resistance Heating Installed	Grab sample
ML17300B233	23 December 1989	Suppl to Special Rept 3-SR-89-006:on 890812,radiation Monitors RU-145 & RU-146 Exceeded 72 H Limit for Returning Monitors to Operable Status.Caused by Malfunction of Monitor RU-146 Resulting in Loss of Capability to Monitor Effluents
ML17300B234	23 December 1989	Special Rept 2-SR-89-008:on 891124,gaseous Effluent Monitors RU-142 & RU-144 Taken Out of Svc & Declared Inoperable for More than 72 H to Implement Site Mod.Caused by Use of Rectifier in Power Supply Circuit.Site Mod Completed
ML17300B239	28 December 1989	Special Rept 2-SR-89-004,Suppl 1:on 890330 & 0406,PASS Inoperable for More than 7 Days.Caused by Planned Isolation of Demineralized Water Supply to Pass.On 890331,temporary Mod Approved to Isolate Demineralized Water Sys	Temporary Modification
ML17303A426	8 June 1987	Special Rept 2-SR-87-015:on 870509,containment Area Monitor Channel a Inoperable for Greater than 72 H.Caused by Repairing Single Channel Area Monitor Board.Analysis Begun to Determine Cause of Board Failure on 870506
ML17303A427	8 June 1987	Special Rept 2-SR-87-016:on 870509,radioactive Gaseous Effluent Monitor Exceeded 72 H Limit for Operability.Caused by Maint of Low Flow Alarm.Surveillance Test Performed & Monitor Declared Operable on 870512
ML17303A428	8 June 1987	Special Rept 1-SR-87-019:on 870504,radiation Monitor Declared Inoperable Due to Spurious Detector Failure Alarms. Cause of Alarms Unknown.Monitor Returned to Operability After Completion of Surveillance Testing
ML17303A429	8 June 1987	Special Rept 3-SR-87-001:on 870514,high Range Noble Gas Activity Monitor RU-144 Inoperable for Greater than 72 H. Caused by Low & High Range Plant Vent Monitors Being Taken Out of Svc on 870511 for Implementation of Change Package

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