Jettison lockers that hold incendiary ammunition should be insulated with sand. How deep should the sand be at a minimum on the bottom?

The requirement for jettison lockers that contain incendiary ammunition to be insulated with sand is based on safety protocols designed to mitigate the risk of fire and explosion in the event of an emergency situation. Insulating with sand helps to absorb heat and prevent the spread of flames, thereby enhancing the safety of the storage area.

A minimum depth of 6 inches of sand at the bottom of the locker is specified to ensure adequate insulation. This depth is critical because it provides enough thermal mass to effectively absorb heat generated by any potential fire or combustion, thereby reducing the likelihood of ignition and minimizing the risk of a catastrophic event. The use of sand also helps to contain any debris resulting from an explosive event, which can further aid in limiting damage and injury.

In contrast, any shallower depth would not provide the same level of protection, potentially failing to adequately insulate against heat and contributing to an increased risk of incendiary incidents. Thus, the specification for a minimum of 6 inches ensures that safety standards are met, reducing risks associated with storing incendiary ammunition.