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D&D Dictionary

Popular deactivation and decommissioning terms and their definitions.

Index:  A  B  C  D  E  F  G  H  I  J  K  L  M  N  O  P  Q  R  S  T  U  V  W  X  Y  Z  : View all

Listing: R

    Readiness Review

     A management review of documents, organizational structure, personnel qualifications, physical preparations and other factors to confirm that decommissioning operations (removal action, if under CERCLA) are ready to proceed.


     The spilling,, leaking, pumping, pouring, emitting, emptying, discharging, injecting, escaping, leaching, dumping, or disposing of a hazardous substance, pollutant, or contaminant into the environment. This includes the abandonment or disposal of barrels or other closed receptacles containing hazardous substances, pollutants, or contaminants.

    Remedial Action

     Activities initiated to assess and clean up inactive DOE facilities or waste sites.

    Removal Action

     The cleanup or removal of released hazardous substances from the environment, such actions as may be necessarily taken in the event of the threat of a release..., such actions as may be necessary to monitor, assess, and evaluate the release or threat of release.

    Reportable Quantity

     The amount or quantity of substances defined in 40 CFR 302 for which notification of release to the environment is required.

    Resource Conservation and Recovery Act (RCRA)

     RCRA, an amendment to the Solid Waste Disposal Act, was passed in 1976 to address the problem of how to safely dispose of municipal and industrial solid waste generated nationwide. it establishes\d a national policy to reduce or eliminate hazardous waste and conduct treatment, storage, or disposal to minimize its threat.

    RCRA-authorized State

     A State that has applied and been found qualified by the U.S. Environmental Protection Agency to take over administration and enforcement within the State's boundaries of the RCRA Subtitle C hazardous waste regulatory program in accordance with 40 CFR Part 271, Requirements for Authorization of State Hazardous Waste Programs.

    Risk Assessment

     The qualitative and quantitative evaluation performed in an effort to define the risk posed to human health and/or the environment by the presence or potential presence and/or the use of specifi


     Radball is a 140 mm (5½”) diameter deployable, passive, non-electrical gamma hot-spot imaging device that offers a 360 degree view of the deployment area. This device has two constituents, a gamma radiation sensitive inner core placed inside spherical tungsten and an outer collimation sheet.

    Rotary Hammer Drill

     An electric drill that is used to drill holes in masonry or concrete.
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