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D&D Dictionary

Popular deactivation and decommissioning terms and their definitions.

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Listing: C


    Facility or site sampling, monitoring and analysis activities to determine the extent and nature of contamination. Characterization provides the basis for acquiring the necessary technical information to select an appropriate cleanup alternative; to prepare a decommissioning plan for safe decommissioning; and to estimate the volume of waste to be generated.

    Clean Air Act

    The purpose of this Act is to "protect and enhance the quality of the Nation's air resources." Its primary application is through permits to regulate new and existing facilities. Of increasing importance are the National Emissions Standards for Hazardous Air Pollutants (NESHAPs).

    Clean Water Act of 1977

     Amended the Federal Water Pollution Control Act passed in 1956. Its objective is to "restore and maintain the chemical, physical, and biological integrity of the Nation's waters." The Act's major enforcement tool is the National Pollutant Discharge Elimination System (NPDES) permit.

    Community Relations Plan

     A plan for all responses lasting longer than six months that addresses local citizens’ and officials’ concerns about a hazardous waste release and integrates community relations activities into the technical response at a site.

    Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA)

    Federal statute (also known as Superfund) enacted in 1980 and reauthorized in 1986, that provides the statutory authority for cleanup of hazardous substances that could endanger public health, welfare, or the environment.

    Contaminated Facilities

     DOE facilities that have structural components and/or systems contaminated with hazardous chemical and/or radioactive substances, including radionuclides. This definition excludes facilities that contain no residual hazardous substances other than those present in building materials and components, such as asbestos-containing material, lead-based paint, or PCB-containing equipment.


     Unwanted radioactive and/or hazardous material which is disbursed on or in equipment, structures, object, soil or water. Contamination may be either surface or volumetric (i.e., contamination incorporated within a solid material).

    Concrete Shaver

     A self-propelled, walk-behind electric-powered shaving machine that uses diamonds impregnated on drum-mounted blades to shave concrete surfaces with extremely accurate tolerances.  The shaver is suitable for flat (or slightly curved) walls and floors.


     A cutting tool with a sharpened edge at the end of a metal blade, used in dressing, shaping, or working a solid material such as wood, stone, or metal


     A machine that lifts heavy objects and also shifts them horizontally. Different types of crane available include: Jib crane – Jib is a long beam that is structurally reinforced so that it will not bend.
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