What is the 'three-dimensional safe distance'?

The 'three-dimensional safe distance' refers to the minimum distance from an explosive hazard in all directions that ensures safety. This concept is crucial in explosive ordnance disposal and other areas involving explosive hazards because it takes into account the potential for danger from multiple angles. When explosives are detonated, the effects can radiate outwards in all dimensions—horizontally and vertically. By establishing a safe distance that encompasses this three-dimensional aspect, personnel are better protected from blast overpressure, fragmentation, and other hazards that can arise from an explosion.

This definition emphasizes the importance of considering both the distance and the surrounding environment when assessing risk. The answer highlights the need for situational awareness and proper planning in EOD operations to ensure the safety of personnel and bystanders.