Fugitive Emissions

DOE-HDBK-XXXX-2005

06/30/2005

77. FUGITIVE EMISSIONS.

1. Emissions that do not pass through a stack, vent, chimney, or similar opening where they

could be captured by a control device. [Derived from EPA Terms]

2. Any air pollutant emitted to the atmosphere other than from a stack. Sources of fugitive

emissions include pumps; valves; flanges; seals; area sources such as ponds, lagoons, landfills,

piles of stored material (e.g., coal); and road construction areas or other areas where earthwork

is occurring. [Derived from 40 CFR 57.103(m)]

78. FUSION. The combining of two light nuclei (such as hydrogen isotopes or lithium) to form a

heavier nucleus. Fusion is accompanied by the release of large amounts of energy. [Derived

from MH]

79. GAMMA RADIATION. High-energy, short wavelength, electromagnetic radiation emitted

from the nucleus of an atom during radioactive decay. Gamma radiation frequently

accompanies alpha and beta emissions and always accompanies fission. Gamma rays are very

penetrating and are best stopped or shielded by dense materials, such as lead or depleted

uranium. Gamma rays are similar to, but are usually more energetic than, x-rays. (See also

alpha radiation, beta radiation, and fission). [Derived from NRC Glossary, HPRH]

80. GENETIC EFFECT. Inheritable changes (chiefly mutations) produced by exposure, to

ionizing radiation or other chemical or physical agents, of the parts of cells that control

biological reproduction and inheritance. [Derived from NCRP 48, RHH]

81. GRAY. The SI (International System of Units) unit of absorbed dose. One gray (Gy) is equal

to an absorbed dose of 1 joule / kg (1 Gy = 100 rads. (The joule is the SI unit of energy,

abbreviated as J.) (See absorbed dose.) [Derived from 10 CFR 20.1004]

82. GREATER-THAN-CLASS-C (GTCC) WASTE. Low-level radioactive waste from

commercial sources containing radionuclide concentrations that exceed Nuclear Regulatory

Commission limits for Class C low-level waste as defined in 10 CFR 61. It is the most

radioactive of the categories of low-level radioactive waste. [Derived from DOE Glossary, 10

CFR 61]

83. GROUNDWATER. Water below the ground surface in a zone of saturation. [40 CFR 192.01]

Related definition:

Subsurface water is all water that exists in the interstices of soil, rocks, and sediment below the

land surface, including soil moisture, capillary fringe water, and groundwater. That part of

subsurface water in interstices completely saturated with water is called groundwater.

[Derived from Walton, AZ WRRC]

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