NORM - Under various circumstances, the radionuclides, primarily from the uranium and thorium decay series, can contaminate the environment to the extent that they pose real or potential public health risks. The investigation and regulatory control of the impacts of most of these sources have been overlooked by federal and state agencies in the past, while stringent controls were placed on X-ray and other man-made sources of radiation. This lack of strict controls has been due, in part, to the fact that the federal government has limited jurisdiction over TENR, and control was previously left up to the states, which often times did not have adequate programs or staff to deal with the problem. TENR is a subset of a larger grouping referred to as naturally-occurring radioactive materials (NORM), Regulations to deal with NORM are being developed by a task force of the Conference of Radiation Control Program Directors (CRCPD) and have been through six drafts to date.
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