EOD MOD B: Demo Exam 2023 Questions and Answers
** How far away do you store blasting caps from other explosives? **
Minimum of 25 ft.
** What is the least sensitive of all military explosives? **
Ammonium Nitrate
** What military explosive is classified as 'highly sensitive and very powerful'? **
RDX (Research Department Explosive) or PETN (Pentaerythritol Tetranitrate)
** What is the most widely used explosive charge? **
TNT (The 1/4 lb cylindrical charge is used for training)
** What is the primary demolition charge still in use? **
M112 Demolition Charge
** What is a Ring Main? **
A line or main line that folds back and forms a loop attached to itself. This is the
preferred method over 'main line - branch line'.
** What angle must a branch line come off of on a Ring Main? **
90 Degree Angle
** What is the difference between the Common and Whipping method for
wrapping det cord around a charge? **
The Common Method is when you take an arms length of det cord and wrap around the
charge 4 times (used on all explosives except plastic explosives).
The Whipping Method is when you take two arms length of det cord and wrap around
the charge 8 times (primarily used on C4 to provide extra squeeze).
** What does the inner wall of shock tube contain? **
A dusting of white or silver explosive consisting of 90% HMX and 10% Aluminum.
** What are the three types of firing devices? **
Electrical, Mechanical, and Electro-Mechanical
** What is one of the main benefits of MDI over other conventional demolition
materials? **
It's safer to transport (since it has a DOT Hazard Class of 1.4S which reduces transpo
requirements).
** What is one of the safety precautions when handling MDI? **
You MUST use a clean sharp knife to produce your square cut, and can not use pliers,
crimpers, or scissors.
** What is the purpose of Military Blasting Caps? **
They ensure positive detonation of generally less sensitive military explosives. They go
into cap wells and serve as the detonating element.
** What is the minimum length you must discard from time fuse for mositure
during a test burn? **
6 inches (Prevents a misfire caused by powder absorbing moisture from the air)
Bare Charge
Explosive charge without a fragmenting container or one that is unassociated with
fragmenting material such as steel or rocks.
Blasting Cap
** How far away do you store blasting caps from other explosives? **
Minimum of 25 ft.
** What is the least sensitive of all military explosives? **
Ammonium Nitrate
** What military explosive is classified as 'highly sensitive and very powerful'? **
RDX (Research Department Explosive) or PETN (Pentaerythritol Tetranitrate)
** What is the most widely used explosive charge? **
TNT (The 1/4 lb cylindrical charge is used for training)
** What is the primary demolition charge still in use? **
M112 Demolition Charge
** What is a Ring Main? **
A line or main line that folds back and forms a loop attached to itself. This is the
preferred method over 'main line - branch line'.
** What angle must a branch line come off of on a Ring Main? **
90 Degree Angle
** What is the difference between the Common and Whipping method for
wrapping det cord around a charge? **
The Common Method is when you take an arms length of det cord and wrap around the
charge 4 times (used on all explosives except plastic explosives).
The Whipping Method is when you take two arms length of det cord and wrap around
the charge 8 times (primarily used on C4 to provide extra squeeze).
** What does the inner wall of shock tube contain? **
A dusting of white or silver explosive consisting of 90% HMX and 10% Aluminum.
** What are the three types of firing devices? **
Electrical, Mechanical, and Electro-Mechanical
** What is one of the main benefits of MDI over other conventional demolition
materials? **
It's safer to transport (since it has a DOT Hazard Class of 1.4S which reduces transpo
requirements).
** What is one of the safety precautions when handling MDI? **
You MUST use a clean sharp knife to produce your square cut, and can not use pliers,
crimpers, or scissors.
** What is the purpose of Military Blasting Caps? **
They ensure positive detonation of generally less sensitive military explosives. They go
into cap wells and serve as the detonating element.
** What is the minimum length you must discard from time fuse for mositure
during a test burn? **
6 inches (Prevents a misfire caused by powder absorbing moisture from the air)
Bare Charge
Explosive charge without a fragmenting container or one that is unassociated with
fragmenting material such as steel or rocks.
Blasting Cap
