As used in this part: Dose commitment means the total radiation
dose to a part of the body that will result from retention in
the body of radioactive material. For purposes of estimating the
dose commitment, it is assumed that from the time of intake the
period of exposure to retained material will not exceed 50
years. Lot Tolerance Percent Defective means, expressed in
percent defective, the poorest quality in an individual
inspection lot that should be accepted. Nationally tracked
source is a sealed source containing a quantity equal to or
greater than Category 1 or Category 2 levels of any radioactive
material listed in Appendix E to part 20 of this Chapter. In
this context a sealed source is defined as radioactive material
that is sealed in a capsule or closely bonded, in a solid form
and which is not exempt from regulatory control. It does not
mean material encapsulated solely for disposal, or nuclear
material contained in any fuel assembly, subassembly, fuel rod,
or fuel pellet. Category 1 nationally tr