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Diablo Canyon: Lochbaum Public Comment 2 On Exigent LAR To Modify TS 3.7.5, "Auxiliary Feedwater System" (EPID L-2020-LLA-0176)

Accession Number: ML20233A353

Date Released: Thursday, August 20, 2020

Package Contents

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• ML20225A303 - Diablo Canyon Units 1 and 2, License Amendment Request 20-01 Exigent Request for Revision to Technical Specification 3.7.5, "Auxiliary Feedwater System." (38 page(s), 8/12/2020)
• ML16342C228 - Responds to Generic Ltr 89-08, "Erosion/Corrosion-Induced Pipe Wall Thinning." Procedure including erosion/corrosion monitoring program & administrative & mgt organizational interface will be implemented prior to Feb 1990 outage. (10 page(s), 7/19/1989)
• ML031200731 - NRC Generic Letter 1989-008: Erosion/Corrosion-Induced Pipe Wall Thinning. (4 page(s), 5/2/1989)
• ML031190529 - NRC Information Notice 1991-018: High-Energy Piping Failures Caused by Wall Thinning. (10 page(s), 3/12/1991)
• ML17083B938 - Forwards response to 870709 NRC Bulletin 87-001, "Thinning of Pipe Walls in Nuclear Power Plants," describing plant program for monitoring thickness of pipe walls in high- energy single- & two-phase carbon steel piping sys. (26 page(s), 9/8/1987)
• ML20233A322 - Diablo Canyon Power Plant, Unit Nos. 1 and 2 - Comment (4) e-mail from D. Lochbaum regarding Diablo Canyon Exigent LAR. (2 page(s), 8/18/2020)
• ML16341G734 - LER 92-022-00:on 920924,determined that linear indications on piping in main feedwater sys near SG nozzles may be beyond ASME.Caused by thermal stratification induced fatigue.PG&E reviewing several modifications.W/921030 ltr. (30 page(s), 10/30/1992)
• ML031210862 - NRC Bulletin 1987-001: Thinning of Pipe Walls in Nuclear Power Plants. (7 page(s), 7/9/1987)