EOD MOD B: Demo Exam 2023 Questions and Answers

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 - Cylindrical detonator, containing one or more sensitive initiating explosives, used to initiate the detonation of demolition charges. What are the two types of blasting caps? - Electric Blasting Caps (M6) and Non-Electric Blasting Caps (M7) Continuity Test - Electrical test for determining completeness of an electrical circuit. Disposal Area - An assigned area in which explosive ordnance is taken for final disposal operations. Disposal Procedure - The final portion of EOD operations on ordnance through detonation, burn of the turning over of the item to proper authorities, after RSP, in which the EOD Soldier observes the safeties first. "Fire in the Hole" - Common term used by all EOD personnel to notify people that a controlled detonation is about to commence. It is yelled three times in three different directions. What is MDI? - Also know as shock tube, the Modern Demolition Initiator is a non-electric detonator firing system, and has improved reliability and safety as the components are sealed. Firing Device - Device that causes the initiation of demolition charges either directly, or throug