ML21188A150

Figure 25 TAC 289.257(i)(3)(E)(iii) Rev Sp 3-15-21

ML21188A150
Person / Time
Issue date:	06/30/2021
From:	Office of Nuclear Material Safety and Safeguards
To:
Beardsley M
Shared Package
ML21182A323	List: ML21182A365 ML21182A366 ML21188A131 ML21188A150 ML21188A151 ML21188A164 ML21209B000
References
TAC 289.257
Download: ML21188A150 (2)

Text

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 mass mixed Fissile material mass mixed with with moderating substances moderating substances having an Fissile Material having an average hydrogen average hydrogen density greater density less than or equal to than H2O a. (grams)

H2O. (grams) 235 U (X)....................... 60 38 233 U (Y)....................... 43 27 239 PU or 241PU (Z)........... 37 24 a

When 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 Fissile material mass of 235 exceeding U (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 - 1

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 Draft - 2