Delay is defined as which of the following?

Delay is defined as which of the following?

• A. Period of time until detonation after application of energy to ignition system
• B. Amount of explosive used
• C. Distance to the nearest structure
• D. Time required to charge the borehole

Answer: (A)

Delay refers to the period of time from when energy is applied to the ignition system to when the explosive actually detonates. This waiting interval is intentional and programmable to control how the blast unfolds across a pattern or sequence. By setting delays, you can stagger detonation between holes or groups of holes, which helps manage rock fragmentation, reduce ground vibration, and improve overall blasting efficiency. The other ideas—how much explosive is used, how far away the structure is, or how long it takes to load and charge the borehole—do not describe this timing between initiation and detonation, so they aren’t the defining concept of delay.

Delay refers to the period of time from when energy is applied to the ignition system to when the explosive actually detonates. This waiting interval is intentional and programmable to control how the blast unfolds across a pattern or sequence. By setting delays, you can stagger detonation between holes or groups of holes, which helps manage rock fragmentation, reduce ground vibration, and improve overall blasting efficiency. The other ideas—how much explosive is used, how far away the structure is, or how long it takes to load and charge the borehole—do not describe this timing between initiation and detonation, so they aren’t the defining concept of delay.