EXPLANATION OF TERMS - TM-9-1300-2770127

TM 9-1300-277

detonation velocity of the explosive in the core.

granted by law, TM 9-1300-277 by Congressional

resolution, or by a finding and determination by the

Disposal-The process of eliminating unwanted

Secretary or Deputy Secretary of Defense, or by a

Secretary or Under Secretary of a Military Department.

material/munition items from the inventory by

Exemptions (except those established by Congressional

redistributing,

transferring,

detonating,

selling,

action) shall be granted only when immediate corrective

abandoning, or destroying it.

measures are wholly impractical, (such as where

Congressional authorization to purchase real estate for

Disposal Range-Any area of land which has been

adequate safety clearances has not been granted or

designated by proper authority for exclusive use in

where significant impairment of the overall defense

demilitarization/ disposal operations.

posture of the United States would otherwise result) and

only if positive programs for the eventual correction of

Dividing Wall -A wall designed to prevent, control, or

the deficiency are being carried out. Exemptions will

delay propagation of an explosion between quantities of

not be granted for a period in excess of that estimated

explosives on opposite sides of the wall.

to be required for correction of the deficiency.

Downwind Vapor Hazard (Quantity/DistanceThe dis-

Explosion-A chemical reaction of any chemical

tance downwind from the munitions which exposed

compound or mechanical mixture which, when initiated,

individuals can be expected to exhibit certain

undergoes a very rapid combustion or decomposition

physiological effects.

This distance is not only

releasing large volumes of highly heated gases which

dependent on the source strength (quantity), but also

exert pressure on the surrounding medium. Also, a

upon the toxicity of the agent and the meteorological

mechanical reaction in which failure of the container

conditions at time of release.

causes the sudden release of pressure from within a

pressure vessel; for example, pressure rupture of a

Dud -An explosive loaded item that fails to explode

steam boiler. Depending on the rate of energy release,

when subjected to treatment that should cause it to

an explosion can be categorized as a deflagration, a

function. A dud can be a bomb, shell, grenade, etc.,

detonation, or a pressure rupture.

that has been discharged from a weapon, dropped from

a plane, or thrown by hand that failed to explode on

Explosive(s)-Materials that either detonate or deflagrate.

reaching the target.

Any Chemical compound or mechanical mixture which,

Electroexplosives Device-Any explosives device, such

when subjected to heat, impact, friction, shock or other

suitable initiation, undergoes a very rapid chemical

as blasting caps, squibs, switches, valves, igniters, etc.,

change with the evolution of large volumes of highly

which is designed to be initiated by an electric current.

heated gases which exert pressures in the surrounding

medium.

Electromagnetic Radiation-An energy wave consisting of

electric and magnetic lines of force, as a radio wave.

Explosives Area-An area specifically designated and set

Equipment-A general term including apparatus,

aside from other portions of an installation for

appliances, devices, wiring, fixtures, fittings, material,

manufacturing, processing, storing, and handling of

and the like.

explosives and ammunition.

Establishment-Any plant, works, arsenal, depot, proving

Explosive Equivalent-The equivalent power of an

ground, or any other activity under control of the Army.

explosive when compared to an equal weight of TNT.

Usually identified as greater or less powerful than TNT

Exemption-A relatively long term exception to an

and is normally identifiable to two decimal, e.g.,

otherwise mandatory requirement. Exemptions may be

Composition

Change 2 B-3