c3691 01-29-2022 16:20:20 G5 R1 theory HWR fat 30 PU239  - Line 7
 191 1 -17 -500 u= 2 IMP:N=1  $ fuel cell
 102 2 -1 500 u = 2 IMP:N=1  $ moderator cell
 104 0 -502 u = 1   fill = 2  lat = 2  IMP:N=1  $ fuel + moderator cell
 106 0 -504 fill = 1  IMP:N=1 $  core
 108 2 -1 504 -506 IMP:N=1  $ reflector.
 110 0 506  IMP:N=0  $ outside.
            
 500 RCC 0 0 -899  0 0  1798  15 $ fuel rod, pitch = 83.125
 502 HEX 0 0 -901  0 0  1802  41.5625  0 0  $ moderator for one fuel rod
 504 HEX 0 0 -900  0 0  1800  0  899.875  0  $ core hexagon
 506 HEX 0 0 -1000  0 0  2000  0  1000  0  $ exterior hexagon
            
m1    92238.83c .995154 94239.83c .004846 $ Umelt
m2   1002.60c .9975 1001.60c .0025 8016.60c .5 $ D2O
m41  92238.83c .995154  $ tally material  8  5574  8
m42  94239.83c .004846  $ tally material  9  5691  9
MT2   HWTR.01
kcode 10000 1  70   200 $ kcode line
E0   .000000625  .1  50
F4:N   191 T
F14:N   191 T
FM14   ( .995154 41 (-2) (-6))  ( .004846 42 (-2) (-6))  T
 T
sdef pos 0 0 0
mode n