In this report, the set of circumstances in which an individual or group was exposed to ionizing radiation. Characterization of an exposure scenario usually relies on assumptions about the activities of an individual or group, the times and locations of the activities, and the radiation environment in which the activities took place.
A set of facts, assumptions and inferences about how exposure takes place that aids the exposure assessor in evaluating, estimating, or quantifying exposures.
A combination of facts, assumptions, and inferences that define a discrete situation where potential EXPOSURE s may occur. These may include the SOURCE, the exposed population, the time frame of EXPOSURE, MICROENVIRONMENT(s), and activities. Scenarios are often created to aid EXPOSURE assessors in estimating EXPOSURE.
A series of assumptions based on factors such as land use and human activities at a site. The major assumptions inherent to a scenario aside from land use, are the frequency and duration of exposure to a contaminant. These exposure assumptions are assigned numerical values along with assumptions regarding exposure pathways and estimate of exposure point concentrations to calculate potential intakes of a contaminant by a receptor. Typical exposure scenarios are residential, commercial/industrial, and recreational.
A set of conditioners or assumptions about sources, exposure pathways, concentrations of toxic chemicals and populations (numbers, characteristics, and habits) which aid the investigator in evaluating and quantifying exposure in a given situation.