Categorical Exclusion Determination
Office of NEPA Policy and Compliance
July 14, 2015
Estimated Read Time min
The University of Idaho proposes 1) to measure and report the creep-fatigue crack growth rates in Alloy 709 under various creep-fatigue loading in accelerated test conditions and to use this knowledge to predict the extended service life of structural components, 2) to measure and report the creep-fatigue crack growth rates in Alloy 709 in as-received and aged conditions, and to identify extrapolation rules between these conditions, and 3) to develop and provide a flaw evaluation procedure under creep-fatigue service conditions.