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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: H

    Hazard Categories

     Conditions created by the presence of hazards that are classified as: 1) Category 1 are those with a potential for significant offsite consequences; 2) Category 2 are those with a potential for

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    Hazardous Substance

     Used synonymously with the term "hazardous material," this includes any substance designated or reflected in 29 CFR 1910.120, to which exposure may result in adverse affects to the worker, public, or environment including: 1) any substance defined under Section 101(14) of CERCLA; 2) any biological agent and other disease-causing agent that after release into the environment and upon exposure, ingestion, inhalation, or assimilation into any person, either directly from the environment or indirectly by ingestion through food chains, will or may reasonably be anticipated to cause death, disease, behavioral abnormalities, cancer, genetic mutation, physiological malfunctions (including malfunction in reproduction), or physical deformations in such persons or their offsprings; 3) any substance listed by the U.

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    Hazardous Waste

     Any solid waste; concentration; or physical, chemical, or infectious characteristics that may; (A) cause, or significantly contribute to, an increase in mortality or an increase in serious irreversible or incapacitating reversible, illness; or (B) pose a substantial present or potential hazard to human health or the environment when improperly treated, stored, transported, disposed of, or otherwise managed.

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    Hazardous Waste Constituent

     A constituent that causes the U.S. Environmental Protection Agency's Administrator to list the hazardous waste in part 261, subpart D, of 40 CFR 260; or a constituent listed in table 1 of 40 CFR

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    Hazardous Waste Operations and Emergency Response (HAZWOPER)

     Regulations established by the Occupational Safety and Health Administration to govern the health and safety of employees engaged in hazardous waste operations and emergency response.

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    Health and Safety Plan (HASP)

     A site plan, required by the HAZWOPER regulations and prepared and followed by any employer whose workers engage in hazardous waste operations, which addresses the safety and health hazards of each phase of site operation and includes the requirements and procedures for employee protection.

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    High-Level Waste

     The highly radioactive waste material that results from the reprocessing of spent nuclear fuel, including liquid waste produces directly in reprocessing and any solid waste derived from the liquid, that contains a combination of transuranic waste and fission products in concentrations high enough to require permanent isolation.

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    HEPA Vacuum

    A vacuum cleaner that makes use of a HEPA filter (high efficiency particulate air) to clean up minute dust and germs. To qualify as HEPA, an air filter must remove 99.97% of all particles greater than 0.3 micrometre from the air that passes through.

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    Hydrodemolition

     A horizontal, vertical and overhead concrete removal technique that utilizes high-pressure water to remove deteriorated and sound concrete without causing any damage. It is effective in removing concrete from around embedded metal elements such as reinforcing steel, expansion joints, anchorages, conduits, shear connectors, and shear studs.

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Logos: DOE, FIU-ARC, Applied Research Center

Design and Development by Applied Research Center at Florida International University with Department of Energy Environmental Management

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