Website Glossary

Deflagration is a rapid combustion process in which a substance burns swiftly, propagating through a material at a subsonic speed. Unlike detonation, which involves a supersonic shockwave, deflagration occurs when a flame front moves progressively through a substance, consuming it as it goes. While deflagration is a rapid process, it is less violent and destructive than detonation.

Demining refers to activities to remove hazards posed by landmines and unexploded ordnance (UXO). This process includes technical surveys, mapping, clearance operations, marking hazardous areas, documenting post-clearance results, liaising with local communities regarding mine action, and handing over cleared land. Various organisations, such as non-governmental organizations (NGOs), commercial companies, national mine action teams, and military units, can carry out demining operations. These efforts can be either emergency-based or developmental in nature.

Explosive devices specifically designed to destroy or dismantle structures, vehicles, obstacles, or other targets in a controlled manner. Demolition charges vary in size, shape, and explosive power, depending on the nature of the target and the desired outcome.

A flexible, tubular explosive device consisting of a core of high explosives – usually PETN (pentaerythritol tetranitrate) or RDX (cyclotrimethylenetrinitramine) – encased in a waterproof outer covering. Det cord rapidly transmits a detonation wave along its length with high velocity for applications where precise and controlled initiation of explosive materials is required, such as in demolition, quarrying, and military operations. It is ideal for initiating large charges of high explosives simultaneously or in situations where conventional detonators may not be suitable. Det cord is highly regulated, requiring specialised training for handling and use. 

Detonation is the rapid and complete explosive decomposition of a material, characterised by a supersonic reaction front. This process is utilised in various applications, including demolition, mining, and propulsion, where the controlled release of high energy and pressure is required. Detonations can be categorised as either high-order or low-order, depending on the completeness of the reaction and the resulting energy output. A high-order detonation is characterised by a complete and efficient conversion of the explosive material, resulting in maximum energy release and a powerful shockwave. Conversely, a low-order detonation indicates an incomplete or inefficient reaction, producing less energy and a weaker shockwave. Understanding the factors that influence the order of detonation is crucial for the safe and effective use of explosives.

A device used to initiate the detonation of an explosive material, typically consisting of a small, sensitive explosive charge or other mechanism that, when activated, generates a shockwave or ignition source to trigger the main explosive charge. Detonators play a crucial role in controlling the timing and sequence of explosive events, ensuring safety and precision in explosive operations. Detonators can be electrically, mechanically, or chemically activated, depending on the application’s specific requirements.

Disruptors are devices or technologies used by EOD operators as bomb mitigation solutions. Their primary purpose is to remotely detonate or disable explosive devices from a safe distance.