TAC:12237: Difference between revisions
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Latest revision as of 01:24, 26 May 2025
Request for: Open | |
Initiation
Questions Answers Results
Other: 05000266/LER-1950-266-75, /75-4:on 750226,primary to Secondary Tube Failure Occurred in Steam Generator B & Went from Initial Point Leak to Max of 125 Gallons Per Minute.Extent of Incident & Radioactivity Below Point to Initiate Evacuation, 05000282/LER-1979-027-01, /01T-0:on 791002,tube Break Occurred in Steam Generator 11.Caused by Mechanical Wear.Two Defective Tubes Plugged, ML19209C950, ML19210C123, ML19259D260, ML19259D267, ML19259D273, ML19259D301, ML20031F203, ML20070J896 | |
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MONTHYEAR05000266/LER-1950-266-75, /75-4:on 750226,primary to Secondary Tube Failure Occurred in Steam Generator B & Went from Initial Point Leak to Max of 125 Gallons Per Minute.Extent of Incident & Radioactivity Below Point to Initiate Evacuation1975-02-27027 February 1975
[table view]/75-4:on 750226,primary to Secondary Tube Failure Occurred in Steam Generator B & Went from Initial Point Leak to Max of 125 Gallons Per Minute.Extent of Incident & Radioactivity Below Point to Initiate Evacuation ML20070J8961976-09-29029 September 1976 RO 76-05:on 760915,pressurizer Level Fell Below 45% Level Setpoint,Resulting in Decreases of Pressurizer Pressure & Vol Control Tank Level.Caused by Leaking Tube in Steam Generator A.Cause of Tube Failure Will Be Evaluated ML20031F2031978-12-15015 December 1978 Forwards Summary of Recent Adverse Steam Generator Operating Experience at Facilities.Assessment of Each Event & Safety Significance Provided ML19259D2731979-09-25025 September 1979 PNO-II-79-01:on 790925,turbine Trip & Reactor Trip Occurred Because of High Feedwater Heater Level.Caused by Failure to Realign Charging Pump Suction from Refueling Water Storage Tank to Vol Control Tank ML19259D3011979-09-25025 September 1979 PNO-II-79-01A:after Reactor Trip & Safety Injection,Max Plant Cooldown Rate in Hot Leg Exceeded Cooldown Limit by 10 F in 30 Minutes.Evaluation Underway.Supplements PNO-II-79-01 ML19259D2601979-10-0202 October 1979 PNO-III-79-09:on 791002,steam Generator Tube Ruptured, Initiating Reactor & Turbine Trip & Safety Injection. Cause Not Stated.Release Occurred from Turbine Bldg. Steam Isolation Valves Are Closed ML19259D2671979-10-0303 October 1979 PNO-III-79-09A:on 791002,tube Ruptured in Steam Generator A.Amount of Radioactive Matl Released to Containment Bldg Through Opened Rupture Disk Is Small.Cooldown Was Accomplished Satisfactorily.Plant Remains Shut Down ML19209C9501979-10-0303 October 1979 PNO-III-79-09B:updates PNO-III-79-09A.On 791003,unit Reached Cold Shutdown.Caused by Tube Rupture in Steam Generator A. Plant Will Remain Shut Down Pending Completion of Generator Insp & Necessary Repairs 05000282/LER-1979-027-01, /01T-0:on 791002,tube Break Occurred in Steam Generator 11.Caused by Mechanical Wear.Two Defective Tubes Plugged1979-10-16016 October 1979 /01T-0:on 791002,tube Break Occurred in Steam Generator 11.Caused by Mechanical Wear.Two Defective Tubes Plugged ML19209D0791979-10-16016 October 1979 Confirms Commitment Made to NRC at 791012 Meeting Re Submittal of License Amend Request within 30 Days to Adopt Primary & Secondary Coolant Activity Tech Specs.Forwards Interim Limit on Primary Coolant Iodine Activity ML19254E8741979-10-22022 October 1979 Summary of 791012 Meeting W/Util Re Steam Generator Tube Rupture on 791002 ML19210C1231979-11-0606 November 1979 Forwards 10 Photographs Taken During Util Insp of 791002 Steam Generator Tube Rupture.Photographs Show Location of Springs & Eroded & Ruptured Tubes.Addl Photographs on File at Plant 1979-10-02 | |
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