Explosive material may be incorporated in the explosive train of a device or system.

In an explosive train there are two secondary high explosive components:

A high explosive train includes three primary high explosive components which are used to initiate explosives:

A triggering sequence, also called an explosive train, is a sequence of events that culminates in the detonation of explosives.

Secondary explosives are used in larger quantities in an explosive train and are usually initiated by a smaller quantity of a primary explosive.

This action unscrews a Jackscrew locking device and enables the explosive train to snap into alignment, thereby completing the second step in mechanical arming.

The use of increasingly less sensitive explosive materials to create an escalating chain reaction is known as an explosive train, initiation sequence, or firing train.

The explosive triggering sequence or the explosive train essentially consists of an 'initiator', an 'intermediary' and the 'high explosive'.

In all four settings, the high explosive in the mortar shell is detonated by a cascading explosive train of 4 increasing energies within the fuze.

This not only affords inherent safety to the usage of explosives during handling and transport, but also necessitates an explosive triggering sequence or explosive train.

In effect, the gun crews had laid an explosive train from the turret to the magazines, and one shell hit to a battlecruiser turret was enough to end a ship.

Fuzes normally have two explosive components in their explosive train: a very small detonator (or primer) struck by a firing pin, and a booster charge at the base of the fuze (sometimes called the 'magazine').

This includes careful selection of the explosives used throughout the explosive train, strong physical barriers between the detonator and booster until the shell is fired and positioning explosive components for maximum protection in the fuze.

The events required to rotate the explosive train into alignment and generate power for the fuze electronics cannot be accomplished by accident or deliberately by a vandal because three actions difficult to simulate must be applied in rapid succession:

The camouflaging layer is removed, the protective plug is unscrewed, the wrench is fitted, interrupting the explosive train and the fuze is set in safe position; the safety element is put on (the haze bar is removed) and the mine is taken out from well.

Upon impact with the target, the firing pin is driven into the detonator, which in turn initiates the spit backcharge, producing a jet which initiates the explosive train from the base forward, resulting in an armor-piercing jet of molten metal and fragmentation of the projectile body.

Safety/arming mechanisms can be as simple as the spring-loaded safety levers on M67 or RGD-5 grenade fuzes, which will not initiate the explosive train so long as the pin is kept in the grenade, or the safety lever is held down on a pinless grenade.

Within a few days the cause was traced to a firing pin that was mounted athwart-ships such that when the torpedo hit a target dead-on (ninety degree track angle) the deceleration forces slowed the pin's motion in its bearings and its spring couldn't move it fast enough to set off the explosive train.