CITP Test 5 All Answers Correct!
What are the effects of an explosion?
Blast Pressure Effect
Fragmentation Effect
Thermal Effect
T/F: Thermal effecs are generally the most damaging of the three primary effects?
Fragmentation is usually the most damaging.
What is important to know ...
CITP Test 5 All Answers Correct!
What are the effects of an explosion? Thermal Effect
Blast Pressure Effect
Fragmentation Effect
T/F: Thermal effecs are generally the most damaging of the three primary effects? False;
Fragmentation is usually the most damaging.
What is important to know about thermal effect high explosives? They produce higher
temperature thermal effects but for a shorter duration.
What is important to know about thermal effect low explosives? They produce lower
temperature thermal effects but for a longer duration.
What is the blast pressure effect? When very hot gases are formed in approximately 1/10,000 of a
second expand out from the point of detonation at supersonic velocities, up to 20,000 mph.
What are the two distinct phases of the blast pressure effect? The Positive Phase and Negative
Phase.
T/F: The negative phase is typically three times longer than the positive phase but less intense.
True.
The four types of injuries sustained during a blast are: Primary Blast Injury: Direct effects of blast
upon the body
Secondary Blast Injury: Propelled fragmentation
Tertiary Blast Injury: Casualty's body is propelled against a stationary object
Qauternary Blast Injury: Being crushed or burns.
, ___________ blast injury is the most common cause of death in explosions. Secondary Blast
Injury (Fragmentation)
IED's may have precut/preformed objects (ie ball bearings, hexagonal nuts, nails, etc) placed within
or along the device to serve what purpose? To form fragmentation when the IED detonates.
What is primary fragmentation? Fragments produced by the IED or explosive container.
What is secondary fragmentation? Object propelled from around the detonation point, and
fractured pieces of the intended target that become lethal missiles.
IED's generally consist of what four components? Power source
Initiator
Explosive
Switch
(PIES)
Also may be a fifth - the container.
Examples of power source for an IED? Batteries (electric)
Coiled Spring(mechanical)
Flame(Heat).
Examples of initiators for an IED? Blasting Caps
Spark Plug
Photographic Flash Bulb
Automobile Light Bulb
Trick Birthday Candles
Matches
Examples of explosives for an IED? Black Powder
Pyrodex
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