Which of the following is an example of incompatible munitions that should not be stored together?

• A. Items with different hazard classes.
• B. Items with different hazard classes or reactive properties; for example, oxidizers with fuels or corrosion-prone energetic materials with reactive metals.
• C. Munitions from different manufacturers.
• D. All munitions are compatible.

Answer: (B)

Incompatibility of munitions comes from chemical reactivity and differing hazard characteristics. Storing items that have different hazard classes or reactive properties can create situations where a safe item triggers an unsafe reaction in another, leading to heat, gas buildup, or ignition.

The best example captures this fully: when you have items with differing hazard classes or reactive properties, such as oxidizers with fuels or corrosion-prone energetic materials with reactive metals. Oxidizers amplify burning of fuels, and energized materials that corrode can react violently with reactive metals, making stored combinations dangerously unstable.

Storing items merely because they come from different hazard classes can still be safe in some cases, so that alone isn’t the definitive indicator. Munitions from different manufacturers aren’t inherently incompatible, and the statement that all munitions are compatible is false.