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Forwards RCE-91-002, "San Onofre Nuclear Generating Station Unit 1 Thermal Shield Lower Support Block Fasteners," root cause evaluation.Fracture analysis of dowel pins indicated fretting wear followed by low cycle,high stress fatigue.

Accession Number: ML13317B329

Date Released: Sunday, November 8, 2020

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• ML13317B328 - Forwards RCE-91-002, "San Onofre Nuclear Generating Station Unit 1 Thermal Shield Lower Support Block Fasteners," root cause evaluation.Fracture analysis of dowel pins indicated fretting wear followed by low cycle,high stress fatigue. (2 page(s), 4/9/1991)
• ML13329A719 - "San Onofre Nuclear Generating Station Unit 1 Thermal Shield Lower Support Block Fasteners," root cause evaluation. (40 page(s), 3/21/1991)