National Committee on Radiation Protection NCRP

The concentrations set by the National Committee on Radiation Protection (NCRP), which are the recommended maximum average concentrations of radionuclides to which an employee may be exposed, assuming that the employee works 8 hours a day, 5 days a week, 50 weeks a year. 

National Committee on Radiation Protection (NCRP)—American committee of scientific authorities that published recommendations on maximum permissible exposure to radiation. 

NCRP (1953). National Committee on Radiation Protection and Measurements, Maximum Permissible Amounts of Radioisotopes in the Human Body and Maximum Permissible Concentrations in Air and Water, NCRP Report No. 11, published as National Bureau of Standards Handbook No. 52, Superseded by NCRP Report No. 22 (National Council on Radiation Protection and Measurements, Washington). 

HEW and the Federal Radiation Council have been assisted by the technical recommendations of the National Council on Radiation Protection and Measurements. The NCRP has been particularly involved in developing the concept and the values of the maximum permissible concentrations (MPC) of radionuclides in water, which values could be applied to foods (16). [The National Council on Radiation Protection and Measurements was created on July 14,1964, by Public Law 88-376. The council is the successor to the unincorporated association which was known as the National Committee on Radiation Protection and Measurements and which for 35 years served as the focal point for developing radiation protection philosophy and standards in the United States. The current address of the NCRP is 4201 Connecticut Ave., N.W., Suite 402, Washington, D. C.]... 

U.S. radiation protection guidelines are estabHshed by the National CouncH on Radiation Protection and Measurement (NCRP) and are based on the recommendations of the International Commission on Radiological Protection (ICRP). The National Research CouncH also sponsors a report from its advisory committee on the biological effects of ionizing radiations (20). 

This Report is one of the series developed under the auspices of Scientific Committee 46, a scientific program area committee of the National Council on Radiation Protection and Measurements (NCRP) concerned with operational radiation safety. The Report provides practical recommendations on the use of personal monitors to estimate effective dose equivalent (Hg) and effective dose (E) for occupationally-exposed individuals. The Report is limited to external exposures to low-LET radiation. Recent additions to the radiation protection literature have made the recommendations possible. In order to avoid delay in utilizing the recommendations in the United States, the quantity as well as E, has been included until such time as the federal radiation protection guidance and associated implementing regulations are revised to express dose limits in E as recommended by the NCRP. 

The National Coimdl on Radiation Protection and Measurements (NCRP) has been concerned from its inception with assessment of the risks of low-level irradiation. In recent years, this concern has prompted increasingly detailed efforts to quantify the influence of dose, dose rate, and linear energy transfer (LET) on the biomedical effects of radiation, with particular reference to the carcinogenic risks of low-level exposure (NCRP, 1980) and the work-in-progress of NCRP Sdentific Committee 40 on LET and relative biological effectiveness. 

The concentration of the radionuclides of interest may be inferred from the sampling location. Natural and man-made background radiation values are summarized by the National Council on Radiation Protection and Measurements (NCRP 1987a) and the United Nations Scientific Committee on the effects of atomic radiation (UNSCEAR 2000a,b). 

The National Council on Radiation Protection and Measurements (NCRP) works to promote the importance of radiation protection and measurements. The council, established to represent all of the national radiological organizations in the United States on a collective basis, focuses on the science of radiation protection. The International X-Ray and Radium Protection Committee, created in July 1928, evolved into the International Commission on Radiological Protection. The NCRP originally operated as an informal association of scientists seeking to make available information and recommendations on radiation protection and measurements. The NCRP was reorganized and chartered by the US. Congress in 1964 as the National Council on Radiation Protection and Measurements. 

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