IAEC Improvements of Methods and Procedures for Internal Exposure Evaluation at NRCN.pdf

IAEC - Improvements of Methods and Procedures for Internal Exposure Evaluation at NRCN The assessment of internal occupational radiation 1. Abstract exposures is generally based on evaluating the retention of radioactive compounds in the lungs and their elimination through excreta. Enhanced accuracy of internal exposure assessments can be achieved by introducing improved Improvements methods of analysis and procedures for evaluating the of Methods and radioactive material intake. In this work we describe two such Procedures for improvements introduced at Nuclear Research Center Negev Internal (NRCN) namely, determination of uranium compounds solubility and operation of a new Whole Body Counter based Exposure on four semi-planar HPGe detectors. Evaluation at The assessment of occupational exposures to ionizing NRCN radiation is a major element of the radiation protection program in nuclear facilities. The total occupational exposure Y. Laichter, U. German, is determined by two principal factors: exposure due to T. Kravchik and O. Pelled radiation from external sources and internal exposure due to radioactive contamination that entered the body. Whenever 2. Introduction unsealed radioactive materials are present in a workplace, the internal exposure of the personnel needs to be assessed. Intake of airborne radioactivity by workers proceeds primarily by inhalation of aerosols. Thus, the lung is