The hydrogen-charged specimens were heated to four peak temperatures of 250 C, 300 C, 350 C, and 400 C, and then cooled to room temperature at cooling rates of C/min under three tensile hoop stresses of 80 MPa, 100 MPa, and 120 MPa. The cool-down specimens showed that high peak heatup temperature led to lower hydrogen content and that larger tensile hoop stress generated larger radial hydride fraction and consequently lower plastic elongation. | Allowable peak heat-up cladding temperature for spent fuel integrity during interim-dry storage
