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| Issue date | Title | Topic | |
|---|---|---|---|
| ML20045C503 | 14 June 1993 | Special Rept 93-005:on 921215,periodic Testing of Heat & Smoke Detection Sys Inappropriately Suspended Based on Belief That Sys Declared Inoperable on 920819 & Appropriate Compensatory Measures in Place.Smoke Detectors Tested | |
| ML20044G490 | 25 May 1993 | Special Rept 93-004:on 930422,fire Barrier Penetration Seal Between Turbine Bldg 272-ft Elevation & West Cable Tunnel Opened for More than 7 Days.On 930429,penetration Did Not Meet Fill Criteria.Penetration Reworked & Sealed | Fire Barrier Continuous fire watch Fire Watch Hourly Fire Watch |
| ML20042H044 | 11 May 1990 | Ro:On 900412,fire Protection Sys 2 Multiplexer Trouble Alarm Received in Control Room & Would Not Clear,Resulting in Inoperability of Sys for More than 14 Days.Hourly Fire Patrol Established & Power Supply for Multiplexer Replaced | Temporary Modification |
| ML20012F354 | 2 April 1990 | Special Rept:On 900302,diesel engine-driven Fire Pump 76P-1 Out of Svc for Approx 7 Days & 14 H Due to Failure & Replacement of Starter Motor.On 900315,fire Pump Failed to Start.Starting Sys Battery Replaced | |
| ML19331C795 | 14 August 1980 | RO 80-163:on 800814 Following Plant Startup,Both Trains of Standby Gas Treatment Found Inoperable.Caused by Water Accumulation in Discharge Line as Result of 2-inch Drain Line from 24-inch to Radwaste Sys Being Blocked | |
| ML19309H880 | 14 May 1980 | Ro:On 800513,instantaneous Release Rate of Halogens & Particulates w/half-lives Greater than 8 Days Exceeded Ets. Caused by Evolution of Radioactive Iodine from Water in Reactor Head Cavity,Following Filling for Refueling | |
| ML19270H761 | 6 December 1979 | RO-79-217:on 791205,during Reanalysis of Pipe Support, Support Found to Be Inoperative Per Criteria of 790814 Ltr. Addl Analysis Showed Associated Piping to Be Inoperative. Caused by Thermal Growth.Mods to Be Completed | |
| ML19322A581 | 2 November 1979 | RO-79-197:on 791102,A/E Informed Util That Support H11-8 in Standby Liquid Control Sys,Support H66-33 in Containment Vent & Purge Sys & Support H76-61 in Fire Protection Sys, Found Inoperative During Pipe Stress Reanalysis | |
| ML19322A572 | 29 October 1979 | RO 79-190:on 791029,A/E Indicated That Three Piping Supports Associated W/Rhr Sys B & One on RHR Svc Water Sys B Were Inoperative.Supports Upgraded & Acceptable.Support N10-145 Being Upgraded | |
| ML19322A580 | 26 October 1979 | RO-79-187:on 791025,pipe Stress Reanalysis Indicated That Five Supports on Emergency Svc Water Return Piping & One Support on Standby Gas Treatment Sys Were Inoperative. Supports Upgraded to Accept Increased Loads | |
| ML19322B888 | 24 October 1979 | Ro:On 791024,A/E Informed Util That Pipe Stress Reanalysis Indicated Pipe Support to Be Inoperative Per NRC Guidelines. Support Will Be Upgraded to Accept Increased Loads from SHOCK-III Analysis | |
| ML19262A141 | 10 October 1979 | RO-79-079:on 791010,pipe Support H15-7 Determined to Be Inoperable,Rendering Sys Inoperable.Support Upgraded | |
| ML19254E140 | 5 October 1979 | RO 79-164:on 791004,pipe Stress Reanalysis Showed One Piping Run Inoperable.Pipe Support on Return Piping from Cross Tie Into Reactor Bldg Closed Loop Cooling Sys & Has No Safety Significance.Hanger Will Be Repaired in Seven Days | |
| ML19322A372 | 28 September 1979 | RO 79-159:on 790927,hangers on Discharge of Core Spray Pump B & Reactor Bldg Closed Hoop Heat Exchanger Found Inoperable,Causing Sys to Be Inoperable Under Earthquake Conditions.Hangers Will Be Repaired within seven-day Period | Earthquake |
| ML19322A475 | 28 September 1979 | RO 79-159:on 790927,hangers on Discharge of Core Spray Pump B & Reactor Bldg Closed Loop Heat Exchangers Found Inoperable Under Earthquake Condition.Cause Not Stated. Hangers Will Be Repaired | Earthquake |
| ML19322A369 | 26 September 1979 | RO-79-158:on 790926,informed by A/E That Addl HPCI & Automatic Depressurization Sys Cabling Affecting Control of HPCI Inboard Steam Supply Isolation Valve Did Not Have Required Separation Criteria,Creating Potential Fire Hazard | |
| ML19253A978 | 30 August 1979 | RO 79-046:on 790830,noted That Routing of HPCI Sys Steam Isolation Valve Control Cable & Thermocouple Temp Detector Cable for HPCI Sys Not Sufficiently Separate from Control Cables of Depressurization Sys | |
| ML19208B235 | 30 August 1979 | RO 79-118:on 790830,no Separation Existed Between HPCI Sys Steam Isolation Valve Control Cable & Thermocouple Detector Cabling & Control Cables.Caused by Vague Design Requirements.Presently Rerouting Cable | |
| ML19259B949 | 5 January 1978 | RO 78-01 on 780105:inlet Piping to Safety Relief Valves Was 6-inch Double Extra Strong,Causing Inside Diameter to Be Slightly Smaller than Throat Diameter of Valve.Vendor Evaluation Rept Due in Feb |