Nuclear Decay Heat Curves

Decay heat power fraction vs time after shutdown for nuclear reactor design and spent fuel management. Covers U-235 thermal fission, U-238 fast fission, Pu-239 thermal fission, standard PWR (45 GWd/tHM), standard BWR (45 GWd/tHM), and MOX fuel per ANSI/ANS-5.1-2014. Time range: 1 second to 10 years. Includes dominant isotope contributors and 2-sigma uncertainty.