EPRI-NP-616 TABLE 13 235U DECAY HEAT AND UNCERTAINTIES FOR 4-HOUR IRRADIATION RUN No. 9 FISSION RATE= 1.008 x 10^12 fissions/sec +/- 1.84% COOLING TIME DECAY HEAT POWER SIGMA (sec) (WATTS) (MEV/S)/ (FISS/S) (%) 11 1.415 8.777 22.7 20 1.329 8.247 17.5 40 1.184 7.343 11.1 50 1.122 6.959 7.3 70 1.016 6.302 6.4 100 0.8927 5.539 5.7 200 0.6652 4.127 4.0 400 0.5029 3.120 3.4 600 0.4201 2.607 3.5 720 0.3829 2.377 3.4 1020 0.3324 2.058 3.4 1980 0.2475 1.532 3.4 3000 0.1924 1.191 3.4 4980 0.1392 0.862 3.4 7020 0.1093 0.6769 3.4 10020 0.08038 0.4977 3.4 19980 0.04528 0.2804 3.4 30000 0.03241 0.2007 9.6 49980 0.01669 0.1033 9.6 70020 0.007933 0.0492 21.0