ML21188A150
| ML21188A150 | |
| Person / Time | |
|---|---|
| Issue date: | 06/30/2021 |
| From: | Office of Nuclear Material Safety and Safeguards |
| To: | |
| Beardsley M | |
| Shared Package | |
| ML21182A323 | List: |
| References | |
| TAC 289.257 | |
| Download: ML21188A150 (2) | |
Text
Draft - 1 Figure: 25 TAC §289.257(i)(3)(E)(iii) [Figure: 25 TAC §289.257(i)(5)(E)(iii)]
Table 257-1 Mass Limits for General License Packages Containing Mixed Quantities of Fissile Material or Uranium-235 of Unknown Enrichment per §289.257(i)(3)(E) [§289.257(i)(5)(E)]
Fissile Material Fissile material mass mixed with moderating substances having an average hydrogen density less than or equal to H2O. (grams)
Fissile material mass mixed with moderating substances having an average hydrogen density greater than H2O a. (grams) 235U (X).......................
60 38 233U (Y).......................
43 27 239PU or 241PU (Z)...........
37 24 aWhen mixtures of moderating substances are present, the lower mass limits shall be used if more than 15% of the moderating substance has an average hydrogen density greater than H2O.
Table 257-2 Mass Limits for General License Packages Containing Uranium-235 of Known Enrichment per §289.257(i)(3)(E) [§289.257(i)(5)(E)]
Uranium enrichment in weight percent of 235U not exceeding Fissile material mass of 235U (X). (grams) 24.....................................................................
60 20.....................................................................
63 15.....................................................................
67 11.....................................................................
72 10.....................................................................
76 9.5....................................................................
78 9.......................................................................
81 8.5....................................................................
82 8......................................................................
85 7.5....................................................................
88 7.......................................................................
90 6.5....................................................................
93 6.......................................................................
97
Draft - 2 5.5....................................................................
102 5.......................................................................
108 4.5....................................................................
114 4.......................................................................
120 3.5....................................................................
132 3.......................................................................
150 2.5....................................................................
180 2.......................................................................
246 1.5....................................................................
408 1.35...................................................................
480 1.......................................................................
1,020 0.92...................................................................
1,800