Limitation of Exposure to Ionizing Radiation (Supersedes NCRP Report No. 91)

Varios autores | 01/01/1993
Servicios Hospitalarios Tecnología Equipamiento Médico Servicios Centrales Diagnóstico y Tratamiento Radioterapia Documentación Bibliografias Limitation of Exposure to Ionizing Radiation (Supersedes NCRP Report No. 91)

Report No. 116 (1993) is the latest in the long series of reports on basic radiation protection criteria that began in 1934. It supersedes the predecessor in the series, NCRP Report No. 91, which was published in 1987. The current Report takes advantage of new information, evaluations and thinking that have developed since 1987, particularly the risk estimate formulations set out in Report No. 115. While the recommendations set out in this Report do not constitute a radical revision of the basic criteria, they do represent a refinement of the system enunciated in Report No. 91. Important changes include the utilization of revised tissue/organ weighting factors and the introduction of radiation weighting factors. Also noteworthy is the introduction of an allowable reference level of intake. Noteworthy too is the recommendation of an age-based lifetime limit for control of occupational exposures and a major simplification of limits aimed at controlling the exposure of the embryo and fetus. This Report, after outlining the goals and philosophy of radiation protection and the basis for exposure limits, goes on to review, in some detail, absorbed dose, equivalent dose, radiation weighting factors, and effective dose. Committed equivalent dose and committed effective dose are also introduced. Risk estimates for radiation exposure are presented and then the dose limits are enunciated. The Report also covers exposure in excess of the limits, limits for unusual occupational situations, guidance for emergency occupational exposure, and remedial action levels for naturally occurring radiation.
1.- Introduction
2.- Radiation Protection Goals and Philosophy
2.1.- Goal of Radiation Protection
2.2.- Effects of Concern in Radiation Protection
2.3.- Objectives of Radiation Protection
3.- Basis for Occupational Dose Limits
3.1.- Introduction
3.2.- Comparison with other Industries
4.- Absorbed Dose. Equivalent Dose and Radiation Weighting Factor
4.1.- Introduction
4.2.- Basis for the Recommended Values of Radiation Weighting Factor
5.- Effective Dose
6.- Committed Equivalent Dose. Committed Effective Dose. Annual Reference Levels of Intake and Derived Reference Air Concentrations
6.1.- Committed Equivalent Dose. Committed Effective Dose
6.2.- Annual Reference Levels of Intake: Occupational
6.3.- Derived Reference Air Concentrations
7.- Risk Estimates for Radiation Protection
8.- Occupational Dose Limits
9 . Dose Limits for Deterministic Effects: Occupational
10.- Protection of the Embryo-Fetus
11.- Exposure in Excess of the Dose Limits: Occupational
12.- Dose Limits for Unusual Occupational Situations
13.- Reference Levels: Occupational
14.- Guidance for Emergency Occupational Exposure
15.- Nonoccupational Dose Limits: Exposure of Individual Members of the Public
16.- Remedial Action Levels for Naturally Occurring Radiation for Members of the Public
17.- Negligible Individual Dose
18.- Individuals Exposed Under 18 Years of Age
19.- Summary of Recommendations

Scientific Committee:
Charles B. Meinhold, Chairman
Seymouur Abrahamson
S. James Adelstein
Willaim J. Bair
John D. Boice, Jr.
R.J. Michael Fry
Eric J. Hall
Edward W. Webster

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