is3_77 - O Ingestion of radioactive material. Radiation...

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Unit 3 Nuclear Power Plant Accidents 3-17 OFFSITE PROTECTIVE ACTIONS Despite the extensive safety measures designed into each nuclear power plant, government emergency preparedness agencies require yet another degree of protection for the public. This extra step, known as "Beyond Defense-in-Depth," is intended to protect the public from the release of hazardous amounts of radioactivity from a nuclear power plant. Plant operators, as well as the federal government and the local states and counties, are required to maintain emergency plans to deal with the following radiological hazards: O Direct exposure to radiation from a plume of airborne radioactive material or from radioactive material deposited on the ground. O Internal or external contamination caused by direct contact with the plume.
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Unformatted text preview: O Ingestion of radioactive material. Radiation Dose Pathways Plume Exposure A plume is an airborne cloud of radioactive gases, particles and/or vapors released from a plant. In many ways, the risk from a radioactive plume is similar to that from any cloud of hazardous materials. Members of the public should avoid being immersed in the hazardous cloud, breathing from the hazardous cloud, and entering areas contaminated by the cloud's passage. Obviously, the major difference is that a plume released as a result of a major reactor accident will be radioactive and not hazardous in other ways (e.g., flammable, corrosive)....
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