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| Issue date | Title | Topic | |
|---|---|---|---|
| ML20092G011 | 11 September 1995 | Ro:On 950801,loss of One Channel of Reactor Vessel Level Sys Occurred.Reactor Water Level Instrument LE-0101A & signal-&-power Cable Will Be Replaced During Next Refueling Outage | Reactor Vessel Water Level |
| ML20198H369 | 14 November 1983 | Ro:On 831003,results of as-found Tests Indicated Crosby Main Steam Relief Valves Had Lift Points Exceeding Tech Spec Limits.Valves Disassembled & Rebuilt by Mfg | |
| ML20081H347 | 25 October 1983 | Telecopy Ro:During Ae Analysis,Design Deficiency in Support Configuration for 1-inch Diameter Fill & Drain Piping to T-82D (Safety Injection Tank D) Discovered.Supports Will Be Redesigned & Installed During Current Outage | |
| ML20080R097 | 7 October 1983 | Telecopy Ro:On 831006,walkdown of Safety Injection Sys Pipe Hangers Revealed Overloaded Condition on Base Plate & Anchor Bolts of Hanger H214.Caused by Error in Design Analysis.Hanger Support to Be Redesigned | |
| ML20080P834 | 3 October 1983 | Supplemental RO 82-034:panel C-47 Will Be Modified & Fire Deluge Sys Reflash Capability Will Be Provided for Panel C-13 | |
| ML20076C567 | 12 August 1983 | Telecopy Ro:On 830811,safety Injection Tank Boron Found Below Tech Spec Limits for Tanks T-82D & T-82B.No Cause Stated.Both Tanks Inoperable at Same Time for 1 Minute | |
| ML20076A903 | 8 August 1983 | Telecopy Ro:On 830806,sample from T-82D Showed Boron Concentration to Be 1,712 Ppm Which Is Below Tech Spec Limit of 1,720 Ppm Boron.Safety Injection Tank Restored to Operability W/Boron Concentration of 1,753 Ppm | |
| ML20076A624 | 5 August 1983 | Telecopy Ro:On 830804,safety Injection (SI) Tank T-82B Became Inoperable Due to Low Level,While SI Tank T-82D Inoperable Due to Routine Sampling.Si Tank T-82B Restored to Operability within 5 Minutes | |
| ML20077G820 | 20 July 1983 | Telecopy Ro:On 830719,discovered Current from 125-volt Dc Sys Short Circuit Will Result in Temp of Associated Conductors,Exceeding FSAR Value.Sample Boron Concentration Could Not Be Restored within 1 H | |
| ML20090F246 | 23 June 1983 | Telecopy Ro:On 830531,auto & Manual Indication Lights for FIC-0737A & HIC-0737A (Controllers for CV-0737A-auxiliary Feedwater) Discovered Out.Caused by Blown Fuse in Control Circuitry | |
| ML20073T083 | 2 May 1983 | Telecopy Ro:On 830429,sample from T-82D (Safety Injection Tank D) Showed Boron Concentration Below Tech Spec Limit. While Attempting to Increase Boron Level,Addl Safety Injection of T-82B occurred.T-82D & T-82B Restored | |
| ML20079P685 | 28 April 1983 | Updated RO 83-06:evaluation of Discrepancies Between as- Built & Actual Design of Safety Injection Refueling Water Tank Support Structure Indicated Sufficient Capacity to Resist Loadings.Schedule for Mods & Design Review Submitted | |
| ML20073Q850 | 26 April 1983 | Telecopy Ro:On 830425,two Safety Injection Tanks Inoperable. Caused by Low Level & Routine Testing.Tank Level Restored | |
| ML20073R350 | 25 April 1983 | Telecopy Ro:On 830423,safety Injection Tank Inoperable Due to Routine Sampling.Additionally,Another Tank Became Inoperable Due to Low Level | |
| ML20069K491 | 18 April 1983 | Telecopy Ro:On 830415,safety Injection Tank T-82D Fell Below Tech Spec Level Requirements.No Cause Stated.Level Restored | |
| ML20072F346 | 14 March 1983 | Telecopy Ro:On 830312,w/safety Injection Tank T-82D Inoperable Due to Low Boron Concentration,Addl Safety Injection Tank T-82B Became Inoperable Due to Low Boron Level.Operability Restored | |
| ML20070W054 | 10 February 1983 | Telecopy Ro:On 830129,operators Discovered Thermal Overloads for One Room Cooler Fan in Each of Engineered Safeguards Rooms Tripped & Wired Incorrectly on 830131.Fan Wiring Corrected | |
| ML20071A020 | 7 February 1983 | Telecopy Ro:On 830204,number of Openings in Safety Injection Refueling Water Tank Support Structure Unaccounted for & Only One Fan Operating for Each Room Cooler.Caused by Loss of Offsite Power & Diesel Generator Failure | |
| ML20067C845 | 3 December 1982 | Ro:On 821203,safety Injection Tank T-828 Boron Concentration Fell Below Tech Specs & Could Not Be Restored within Required 1-h Limit | |
| ML20066A865 | 1 November 1982 | Telecopy Revised RO Initially Reported on 821025:on 821022, Boron Concentration in Safety Injection Tank T-82B Restored in 1-h.Initially Reported That Concentration Less than Tech Specs for Over 1-h | |
| ML20065T384 | 25 October 1982 | Telecopy Ro:On 821022,23, & 25,safety Injection Tank T-82B Boron Concentration Fell Below Tech Spec Limit & Could Not Be Restored within 1-h as Required | |
| ML20063E821 | 16 August 1982 | Telecopy Message of Ro:On 820814,containment Integrity Momentarily Lost.Caused by Failed Gasket on Escape Air Lock | |
| ML20084U601 | 8 December 1977 | Telecopy RO 77-056:on 771129,main Exhaust Fan Stopped During Gaseous Waste Release,Exceeding Tech Spec 3.9.15.Release Terminated.No Waste Gas Monitor Alarms Received or Discharge Limits Exceeded | |
| ML20084U619 | 28 November 1977 | Telecopy RO 77-055:on 771125,offsite Power Lost,Resulting in Loss of Main Condenser Cooling Water.Plant Stabilized in Hot Condition & Borated.Letdown Line Developed Leak.Leakage Exceeded Tech Spec 3.1.5 Limits.Leak Isolated & Repaired | |
| ML20084U664 | 26 September 1977 | Telecopy Ro:On 770924,station Power & Startup Power Lost. Caused by Lightning Storm | |
| ML20084U683 | 9 September 1977 | Telecopy Ro:On 770908,turbine Load Limiter Lower Switch Stuck Closed,Causing Turbine to Run Back to 43% Power.Caused by Control Rods Inserting Below pre-power & Power Dependent Insertion Limits to Maintain Primary Coolant Temp | |
| ML20084U705 | 19 July 1977 | Telecopy RO ER-76-036:on 770719,C SI Bottle Found Out of Specs & Level Transmitter Failed.Instrument Calibr,Repaired & Returned to Svc | |
| ML20084U234 | 8 February 1977 | Telecopy RO ER-77-014:on 770107,intake/discharge Water Temp Delta Temp Limit Exceeded Twice | |
| ML20084U249 | 1 February 1977 | Telecopy RO 77-009:on 770130,intake/discharge Water Delta Temp Limit Exceeded Twice,Violating Tech Specs 3.9 & 4.1 | |
| ML20084U713 | 1 February 1977 | Telecopy Ro:On 770131,transmission Towers & Conductors Between Plant & Switchyard Found Heavily Loaded W/Ice Deposited by Cooling Tower Plume.North Cooling Tower Placed on Bypass to Reduce Further Ice Formation | |
| ML20084U728 | 18 January 1977 | Telecopy Ro:On 770117,discharge/lake Delta Temp Exceeded Twice & Control Rod Misaligned During Withdrawal for Critical Approach | |
| ML20084U303 | 14 January 1977 | Telecopy RO 77-004:on 770111 & 12,intake/discharge Temp 5 F Limit Exceeded During Plant Trip Startup Conditions | |
| ML20085E633 | 4 January 1977 | Telecopy RO 77-001:control Rod Drive Mechanism 4 Declared Inoperable Due to Seal Leakage | |
| ML20085E432 | 10 December 1976 | Telecopy Ro:On 761209,one Sequencer in Left Channel Failed to Run Completely Through During Safeguards Sys Online Tests.Caused by Improper Sequencer Resetting | |
| ML20085E588 | 27 August 1976 | Telecopy Ro:On 760823,sequencer Improperly Operated.W/All Rods Withdrawn,Group 4 Select Light Energized When Group 3 Selected.Transmittal Sheet Encl | |
| ML20085E480 | 19 August 1976 | Telecopy RO ER-PAL-76-026:on 760817,cooling Tower Basin Level Exceeded Normal Elevation During Attempted Modified Mode of Circulating Water Sys Operation | |
| ML20085E522 | 17 May 1976 | Telecopy RO 76-016:on 760514,MSIV Integrity May Be Lost After Main Steam Line Break.Fsar Review Indicates That Steam Line Rupture Incident Assumed Complete Steam Generator Blowdown | |
| ML20085E531 | 11 May 1976 | Telecopy RO PAL-ER-014;on 760511,1-1 Diesel Generator Removed from Svc W/One High Pressure Safety Injection Pump Inoperable.Caused by Greater than Tech Spec Limiting Condition for Operation | |
| ML20085E536 | 11 May 1976 | Telecopy RO 76-013:during Plant Startup,Cooling Tower Drained to Repair Leaking Condenser Tube,Resulting in Temp Differential Above Tech Spec Limits | |
| ML20085E556 | 3 May 1976 | Telecopy Ro:On 760430,during Mods Re Boron Recrystallization,Vendor Reported That Case Code Allowable Stress May Be Exceeded at Valve body-to-bonnet Flange.Valves within Code Limits for Present Operating Pressure | |
| ML20085E569 | 23 April 1976 | Telecopy RO 76-011:penetration 46 Containment Vent Header Exceeded Allowable Limits During Leak Testing | |
| ML20085E582 | 12 April 1976 | Telecopy RO 76-008:on 760409,waste Gas Tank T-101A Inadvertently Partially Released.No Limits Exceeded or Approached | |
| ML20085E601 | 11 February 1976 | Telecopy RO 76-004:on 760210,abnormal Degradation of Steam Generator Tubes/Reactor Pressure Boundary Suspected.Data Evaluation in Progress | |
| ML20085E613 | 10 February 1976 | Telecopy RO ER-76-003:on 760209,eddy Current Testing Revealed Greater than Expected Steam Generator Tube Degradation | |
| ML20085E628 | 12 January 1976 | Telecopy RO 76-001:investigation of Unusual Noise Revealed That Sirw Tank Slightly Dented & Vent Partially Plugged W/Ice & Snow.Lpsi Pump Stopped & Reactor Cavity Secured. Investigation Continues | |
| ML20085E762 | 22 December 1975 | Telecopy Message of Ro:On 751221,plant Discharge Water Temp Exceeded 5-degree Temp Differential During Plant Cooldown & Removal of a Cooling Tower from Svc | |
| ML20085E770 | 10 December 1975 | Telecopy Message Ro:On 751208,Tech Specs Apparently Violated Re Discharge Water Ph.Caused by Misinterpretation of Sample Data.Ro Negated & Problem Handled Through Plant Corrective Action Sys | |
| ML20085F902 | 10 December 1975 | Corrected AO 75-014 Re Previous Insp of 2,400-volt Breaker on Bus 1D | |
| ML20085E773 | 21 November 1975 | RO 75-026:on 751113,containment Purge Exhaust Valve Leaked Excessively During Local Leak Test.Caused by Improper Seat Alignment of Upstream Valve Due to Deformation by 46 Psig Pressure.Valves Tagged Closed | |
| ML20085E864 | 14 October 1975 | RO UE-75-010:on 751002,poison Rod Axial Growth Found in Facility Fuel.Possibly Caused by Radiation Induced Gowth. Power Level Limited to 80% & Primary Coolant Gross Gamma Radioactivity Monitored by Daily Samples |