AEROSOL AND PARTICULATE DISPERSION IN NUCLEAR FACILITIES - SAMPLING AND MEASUREMENTS

摘要

Understanding the particle signatures associated with special nuclear material (SNM) processing operations are an essential tool for determining the environmental observables associated with a given facility. Each SNM process creates distinct physical and chemical signatures that are released as effluents in the form of gaseous emissions, particulates, liquids, or waste. These effluents are transported from the point of origin to the environment through various means such as ventilation, waste disposal, and personal movement pathways. Often during this process, the particle signature is changed. For example, ventilation systems skew particle effluent signatures by removing larger, heavier particles from the effluent stream. In order to predict the environmental observable of an SNM process, one must first measure the source term associated with this process. With source term information, modeling and simulation can be applied, allowing one to predict the environmental observables for a vast array of process and facilities. Presented in this initial paper will be the preliminary efforts to collect and quantify particle source terms for a variety of uranium processing operations.