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Radioactive Sources Applications and Alternative Technologies (2021) / Chapter Skim
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Appendix D: Glossary
Pages 173-176

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From page 173...
... Aggregated sources: Defined in 10 CFR Part 37 as "accessible by the breach of a single physical barrier that would allow access to radioactive material in any form, including any devices that contain the radioactive material, when the total activity equals or exceeds a Category 2 quantity of radioactive material." Agreement State: States that have assumed authority under Section 274b of the Atomic Energy Act to license and regulate byproduct materials (radioisotopes) , source materials (uranium and thorium)
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From page 174...
... Byproduct material: Defined by the Atomic Energy Act as radioactive material (except special nuclear material) yielded in or made radioactive by exposure to the radiation incident to the process of producing or using special nuclear material; and tailings or wastes produced by the extraction or concentration of uranium or thorium from any ore processed primarily for its source material content.
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From page 175...
... Ionizing radiation doses can be expressed as an absorbed dose, equivalent dose, or effective dose. Its SI unit, gray (Gy)
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From page 176...
... Risk can be expressed in absolute terms or in comparison to other types of risks. Safety: In the context of this report, concerning prevention of failure, damage, human error, and other inadvertent acts involving radiation sources that could result in accidental radiation exposures.
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Key Terms

  • radiation source
  • ionizing radiation
  • radiation sources
  • radioactive decay
  • energy absorbed

  • managed safely
  • special nuclear
  • involving radiation
  • permanent injury
  • radiation dose

  • physical harm
  • unit mass
  • close proximity
  • acts involving
  • nuclear material

  • undergoes radioactive
  • absorbing medium
  • affected individuals
  • malevolent purposes
  • increasing dose

  • energy act
  • weighting factors
  • activity equals
  • waste containing
  • nuclear chain

  • radioactive source
  • threshold level
  • completely contained
  • source material
  • radiation carcinogenesis


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