Improvised Explosive Devices-IED

Question 1

What is a “Thermal Effect”?

Answer 1

The bright flash or fireball when the BOOM goes off…

Question 2

Does the Thermal Effect do the most damage?

Answer 2

NO! its the baby of all the damages… least damage.

Question 3

What part of the explosion does the MOST damage?

Answer 3

Blast Pressure

Question 4

What are the two distinct phases for blast pressure?

Answer 4

Positive and Negative/Suction Phase

Question 5

What is the Positive Phase during the blast pressure?

Answer 5

Its the pressure wave that moves outward from the point of detonation.

Question 6

What is the Negative Phase during the blast pressure?

Answer 6

Partial vacuum created near the epicenter due to outward movement of air.

Question 7

Whats the Blast Pressure Effect?

Answer 7

VERY HOTTTT gases…. (between 3,000-7000) formed in approximately 1/10,000 of a second expand out from the point of detonation at SUPERSONIC velocities of up to 20,000 miles per hr.

Question 8

What are the 4 types of injuries sustained during a blast?

Answer 8

Primary Blast Injury
Secondary Blast Injury
Tertiary Blast Injury
Quaternary Injury

Question 9

Que es Primary Blast Injury?

Answer 9

Caused by the direct effects of blast upon the body.

Question 10

Whats the Secondary Blast Injury?

Answer 10

Caused by propelled fragmentation

Question 11

Whats Tertiary Blast Injury?

Answer 11

Occurs when a casualty’s body is propelled by blast against the ground, equipment, structures, or other stationary objects.

Question 12

Whats Quaternary Injury?

Answer 12

Everything else not covered by primary, secondary and tertiary blast.

Question 13

Primary blast injuries occur through three basic mechanisms which are….

Answer 13

Implosion, Spalling and inertial effects

Question 14

*** What is the most common cause of death in explosions?

Answer 14

Secondary blast injury.

Question 15

What is Fragmentation Effect?

Answer 15

When an encased explosive such as a pipe bomb detonates, the rapidly expanding gases produced by the explosion enlarge the casing to about one and one-half times its original diameter before it raptures.

Question 16

What are objects propelled from around the detonation point and fractured pieces of the intended target that become lethal missiles called?

Answer 16

Secondary Fragmentation.

Question 17

What is a improvised explosive device (IED)?

Answer 17

A device placed or fabricated in a manner incorporating destructive, lethal, noxious, pyrotechnic, or incendiary chemicals designed to kill, destroy, incapacitate, harass, or distract.

Question 18

What are the 4 components of an IED?

Answer 18

A power source, an initiator, an explosive and a switch.

P.I.E.S. (5th could be a container)

Question 19

Do high explosives require confinement for detonation?

Answer 19

No.

Question 20

What are three primary IED methods of initiation?

Answer 20

Timed
Victim-Operated or Booby Trap
Command

Question 21

What is a Vehicle-Borne Improvised Explosive Device?

Answer 21

A vehicle modified to conceal and deliver a large IED to a target for the purpose of inflicting mass casualties and catastrophic property.

Question 22

What are two primary differences between a IED and a Vehicle-Borne Improvised Explosive Device? (VBIED)

Answer 22

The size off the device and the vehicle.

Question 23

What are the 3 primary VBIED methods of Initiation?

Answer 23

Timed, Command and suicide

Question 24

What mandatory evacuation distance for a 5 lb pipe bomb?

Answer 24

70 Ft., Preferred is 1200

Question 25

What mandatory evacuation distance for a suicide bomber? (20 lbs)

Answer 25

110 Ft., Preferred is 1700 ft

Question 26

What mandatory evacuation distance for a briefcase/suitcase? (50 lbs)

Answer 26

150 Ft., Preferred 1850ft

Question 27

What mandatory evacuation distance for a car? (500 lbs)

Answer 27

320 Ft., 1900 ft

Question 28

What is the hot zone?

Answer 28

The innermost perimeter of the event, representing the maximum risk area where the IED inflicted the most destructive damage.