Section 120.781 - General License: Fissile Material, Limited Quantity per Package(A) A general license is hereby issued to any licensee to transport fissile material, or to deliver fissile material to a carrier for transport, if the material is shipped in accordance with 105 CMR 120.781. The fissile material need not be contained in a package which meets the standards of 10 CFR 71 Subparts E and F; however, the material must be contained in a Type A package. The Type A package must also meet the DOT requirements of 49 CFR 173.417(a).(B) The general license applies only to a licensee who has a quality assurance program approved by the Agency as satisfying the provisions of 105 CMR 120.791 through 120.797.(C) The general license applies only when a package's contents:(1) Contain less than a Type A quantity of fissile material; and(2) Contain less than 500 total grams of beryllium, graphite, or hydrogenous material enriched in deuterium.(D) The general license applies only to packages containing fissile material that are labeled with a CSI which: (1) Has been determined in accordance with 105 CMR 120.781(E);(2) Has a value less than or equal to ten; and(3) For a shipment of multiple packages containing fissile material, the sum of the CSIs must be less than or equal to 50 (for shipment on a nonexclusive use conveyance) and less than or equal to 100 (for shipment on an exclusive use conveyance).(E)(1) The value for the CSI must be greater than or equal to the number calculated by the following equation: Click to view image
(2) The calculated CSI must be rounded up to the first decimal place;(3) The values of X, Y, and Z used in the CSI equation must be taken from Tables I or II, as appropriate;(4) If Table II is used to obtain the value of X, then the values for the terms in the equation for uranium-233 and plutonium must be assumed to be zero; and(5) Table I values for X, Y, and Z must be used to determine the CSI if:(a) Uranium-233 is present in the package;(b) The mass of plutonium exceeds 1% of the mass of uranium-235;(c) The uranium is of unknown uranium-235 enrichment or greater than 24 weight percent enrichment; or(d) Substances having a moderating effectiveness (i.e., an average hydrogen density greater than H2O) (e.g., certain hydrocarbon oils or plastics) are present in any form, except as polyethylene used for packing or wrapping. TABLE I - Mass Limits for General License Packages Containing Mixed Quantities of Fissile Material or Uranium-235 of Unknown Enrichment per 105 CMR 120.781(E)
Fissile Materials | 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 H2Oa (grams) |
235U (X) | 60 | 38 |
233U (Y) | 43 | 27 |
239Pu 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 II - Mass Limits for General License Packages Containing Uranium-235 of Known Enrichment per 105 CMR 120.781(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 |
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 |
Amended by Mass Register Issue 1373, eff. 9/7/2018.Amended by Mass Register Issue 1480, eff. 10/14/2022.