Eod Terminology

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Explosive Ordnance

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All munitions that contain explosives, pyrotechnics, or CBRNE that cause death /injury to personal or damage to material

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Ordnance

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Explosive, NBC munitions, pyrotechnics, bombs, guns, and ammunition

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Munitions

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In a restricted sense, ordnance items such as bombs, rockets, projectiles, and grenades

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Nomenclature

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Identifying name for ordnance items

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Artillery Ammunition

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Ammunition of a caliber greater than 30mm and not designed for shoulder or hand firing

Fixed

Semi-fixed

Seperate

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Bullet

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A projectile fired, or intended to be fired from a small arm

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Detonation

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An explosion, a chemical reaction/burn that surpasses the speed of sound creating the detonation velocity which ruptures the outer container of explosive, if any

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High Order Detonation

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Achieved when the detonation velocity is equal to or greater than the stable detonation velocity of the explosive

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Low Order Detonation

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Achieved when the detonation velocity is lower than the stable detonation velocity of the explosive

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Deflagration

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Very rapid combustion, sometimes accompanied by flames and sparks

Burning

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Charge

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A given quantity of explosives, by itself or contained within a bomb, explosive, projectile, mine, or used as a propellant for a bullet or projectile

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High Explosive

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An explosion that will normally detonate rather than deflagrate or burn

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Low Explosion

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An explosion which deflagrates or burns rather than detonates

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Grenade

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Small fragmentation defensive or blast offensive ordnance originally designed to be thrown by hand, but now also designed to be projected from rifles, special launchers, and dispensing munitions

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Projectile

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An object projected by an applied force; within EOD it is generally applied to artillery rounds/recoilless rifle rounds

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High Explosive Plastic (HEP)

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Thin cased projectile that is designed to defeat Armored objects. Squah, Head, or Bunker buster rounds

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Rocket

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Unmanned, self-propelled ordnance with or without a warhead that when launched its flight cannot be controlled

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Bomb

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Explosive or CBRNE that is dropped from an aircraft

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Submunition

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Small munitions with no standard size or shape, which are dispensed from cluster bombs, projectiles, and/or rockets

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Mine

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An explosive or other material, normally encased, designed to destroy or damage ground vehicles, boats, and aircraft or designed to wound, kill or otherwise incapacitate personnel. It may be detonated by the actions of its victim, passage of time or by controlled means

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Antipersonnel

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Small munitions or mines designed to kill or preferably wound personnel

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Antitank

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Large munitions or mines designed to kill tanks or other large armored vehicles

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Spin Stabilization

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The spinning of a projectile caused by the rifling in a barrel, keeping it straight in flight, not tumbling

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Fin Stabilization

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Insures the steady flight of the ordnance with the use of fins

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Rifling

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The spiraling grooves in the gun tube that create the spinning of the rounds

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Smooth Bore

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Gun tube that is smooth inside. It does not impart spin to the round

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Strong Back

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Bar, timber, or metal beam designed to take the strain. For example, portion of the bomb that contains the suspension lugs and supports the weight of the bomb

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Cartridge

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An assemblage of the components required to function a weapon once

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Sabot

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A carrier for a sub-caliber projectile so that it may fit into a larger bore gun. the carrier is usually discarded after it is fired from the gun

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Armor Piercing

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Designed to penetrate armor or other similar material

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Stand Off

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Distance from the base of a shaped charge to the target that gives the jet time to form for penetration

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Graze Sensitive

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The ability of a fuze to be initiated by grazing the surface at a glancing angle

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Fuze

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Initiator for ordnance and the attacking point for most RSP procedures

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Safety

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A device that prevents ordnance from being fired accidentally

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Fuze Adapter

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Allows the fuze to be attached to various sizes of ordnance (155mm to 105mm w/ same fuse). On a bomb it may connected to the parachute to assist in chute deployment

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Safe and Arming Device

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A mechanism whose primary purpose is to prevent an unintended functioning of the main charge prior to completion of the arming delay and, in turn, allows the explosive train of the ammunition to function after arming

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Cocked Striker

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A striker/firing pin/detonator that are held under tension by a releasing mechanism such as a safety pin on a grenade

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Hung Striker

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A striker/firing pin/detonator which remains Cocked and under tension, after the releasing mechanism is removed due to and obstruction such as sand or dust

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Misfire

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Failure to fire or explode properly. Failure of a primer or propelling charge to function in a normal or expected manner

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Malfunction

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Failure of ordnance to function in a normal or expected manner

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Dud

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Explosive munition which has not been armed as intended or which has failed to explode after being armed

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Hygroscopic

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Substance that absorbs and holds water, particularly from the air

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Fragmentation

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Term used with ordnance that is designed to break apart or fragment during detonation

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Base Ejection

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The rearward ejection of the base of a projectile along with its contents

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Airburst

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An explosion of a bomb or projectile above the surface of the ground

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EOD Procedure

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Action taken by EOD to render safe, disassemble, neautralize or dispose of ordnance, in which the EOD Soldier observes the safeties first

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Render Safe Procedure (RSP)

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The portion of the EOD procedure which is designed to prevent the detonation or functioning of the explosive ordnance. It is normally accomplished with the aid of special tools and techniques

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Disruption

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Technique to cause the main charge to low order or during IEDs, cause a break in the firing train

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Improvised Explosive Device (IED)

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Those devices placed or fabricated in an improvised manner incorporating destructive, lethal, noxious, pyrotechnic or incendiary chemicals, designed to destroy, disfigure, distract or harass

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Ground

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The flow of current from an item in an electrical circuit to the ground. A physical connection with the Earth to equalize potential and to discharge stray electrical charges, preventing a Soldier from prematurely activation electrical components