For which of the following scenarios is sprinkler protection not required for munitions?

Sprinkler protection is not required for munitions in scenarios where they are stored outdoors, for inert training munitions, and for munitions requiring heating.

When munitions are stored outdoors, the risk profile differs significantly from that of indoor storage. Outdoor environments provide natural ventilation and reduce the accumulation of hazardous vapors, hence sprinklers may not be necessary.

In the case of inert training munitions, these items do not contain explosive materials and pose a significantly lower risk of combustion or detonation. Therefore, sprinkler systems are not mandated for such items.

Furthermore, munitions that require heating are usually managed under specific controlled conditions where the associated risks are mitigated through other safety measures, thereby eliminating the need for sprinkler systems.

In summary, all these scenarios justify the absence of required sprinkler protection due to the inherent characteristics of the munitions and their storage conditions.