{"data":{"id":"us/10-cfr-20.1203","jurisdiction":"us","citation":"10 CFR 20.1203","heading":"Determination of external dose from airborne radioactive material.","body":"Licensees shall, when determining the dose from airborne radioactive material, include the contribution to the deep-dose equivalent, lens dose equivalent, and shallow-dose equivalent from external exposure to the radioactive cloud (see appendix B to part 20, footnotes 1 and 2).\nNote:\nAirborne radioactivity measurements and DAC values should not be used as the primary means to assess the deep-dose equivalent when the airborne radioactive material includes radionuclides other than noble gases or if the cloud of airborne radioactive material is not relatively uniform. The determination of the deep-dose equivalent to an individual should be based upon measurements using instruments or individual monitoring devices.","path":["Title 10—Energy","CHAPTER I—NUCLEAR REGULATORY COMMISSION","PART 20—STANDARDS FOR PROTECTION AGAINST RADIATION","Subpart C—Occupational Dose Limits"],"source_url":"https://www.ecfr.gov/api/versioner/v1/full/2026-08-25/title-10.xml","current_through":"2026-08-25","vintage":"","retrieved_at":"2026-08-27T02:24:09Z","sha256":"c12bfb0cd4fc4e1786db5813a11fe679a466330d29583a0a69086e2947b07a18","source_id":"us-cfr","stale":true,"prev":"us/10-cfr-20.1202","next":"us/10-cfr-20.1204"},"notice":"GroundRules: Original legal text. Not legal advice."}