Uses and application of radiation in radioactive dating
Uses and application of radiation in radioactive dating - about me dating
20.1203 Determination of external dose from airborne radioactive material. 20.1205 [Reserved] 20.1206 Planned special exposures. 20.1404 Alternate criteria for license termination. 20.1405 Public notification and public participation. 20.1704 Further restrictions on the use of respiratory protection equipment. Category 1 nationally tracked sources are those containing radioactive material at a quantity equal to or greater than the Category 1 threshold. 20.1202 Compliance with requirements for summation of external and internal doses. 20.1302 Compliance with dose limits for individual members of the public. 20.1402 Radiological criteria for unrestricted use. 20.1403 Criteria for license termination under restricted conditions. 20.1701 Use of process or other engineering controls. 20.1703 Use of individual respiratory protection equipment. It does not mean material encapsulated solely for disposal, or nuclear material contained in any fuel assembly, subassembly, fuel rod, or fuel pellet.
Radiation-induced cataract formation is an example of a nonstochastic effect (also called a deterministic effect).
1244), the Uranium Mill Tailings Radiation Control Act of 1978 (92 Stat.
3021), the Nuclear Waste Policy Act of 1982 (96 Stat.
means any machine capable of accelerating electrons, protons, deuterons, or other charged particles in a vacuum and of discharging the resultant particulate or other radiation into a medium at energies usually in excess of 1 megaelectron volt.
Occupational dose does not include doses received from background radiation, from any medical administration the individual has received, from exposure to individuals administered radioactive material and released under § 35.75, from voluntary participation in medical research programs, or as a member of the public.
20.1301 Dose limits for individual members of the public. 20.1502 Conditions requiring individual monitoring of external and internal occupational dose. 20.1602 Control of access to very high radiation areas. 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.
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 of this part. 20.2007 Compliance with environmental and health protection regulations. means— (1) The assessment of dose equivalent by the use of devices designed to be worn by an individual; (2) The assessment of committed effective dose equivalent by bioassay (see Bioassay) or by determination of the time-weighted air concentrations to which an individual has been exposed, i.e., DAC-hours; or (3) The assessment of dose equivalent by the use of survey data. means an area, accessible to individuals, in which radiation levels from radiation sources external to the body could result in an individual receiving a dose equivalent in excess of 0.1 rem (1 m Sv) in 1 hour at 30 centimeters from the radiation source or 30 centimeters from any surface that the radiation penetrates. (a) The regulations in this part establish standards for protection against ionizing radiation resulting from activities conducted under licenses issued by the Nuclear Regulatory Commission. 30, 2015] Source: 56 FR 23391, May 21, 1991, unless otherwise noted. (b) It is the purpose of the regulations in this part to control the receipt, possession, use, transfer, and disposal of licensed material by any licensee in such a manner that the total dose to an individual (including doses resulting from licensed and unlicensed radioactive material and from radiation sources other than background radiation) does not exceed the standards for protection against radiation prescribed in the regulations in this part. 28, 2007] As used in this part: means a room, enclosure, or area in which airborne radioactive materials, composed wholly or partly of licensed material, exist in concentrations— (1) In excess of the derived air concentrations (DACs) specified in appendix B, to §§ 20.1001-20.2401, or (2) To such a degree that an individual present in the area without respiratory protective equipment could exceed, during the hours an individual is present in a week, an intake of 0.6 percent of the annual limit on intake (ALI) or 12 DAC-hours.