Why is temperature control important for explosives in storage?

• A. Temperature controls are optional if containers are sealed.
• B. Temperature fluctuations can affect stability and sensitivity; maintain within specified limits.
• C. Extremely cold storage can cause condensation and should always be avoided.
• D. Temperature has no impact on safety if the area is ventilated.

Answer: (B)

Temperature control matters because the stability and sensitivity of explosives are highly temperature-dependent. When temperatures rise, many explosives decompose faster or become more sensitive to initiation, and heat can drive unwanted reactions, gas buildup, or phase changes that create hotspots. This makes a small shock, friction, or vibration more likely to cause an unintended detonation. On the other hand, very low temperatures can alter material structure or moisture interactions, changing how the explosive responds when it’s later warmed. Keeping storage within the specified temperature range helps keep the material in a predictable, safer state by limiting these changes.

Sealed containers or ventilation don’t eliminate these risks; pressure changes, condensation, or other temperature-related effects can still occur with swings in temperature. Extreme cold isn’t inherently safe either, as it can lead to condensation or other conditions that affect safety. Maintaining the approved temperature limits is the key to minimizing instability and reducing sensitivity to initiation.