Which action is NOT recommended when responding to an excessive magazine temperature alarm?

Using sprinklers to cool immediately in response to an excessive magazine temperature alarm is not recommended because it can create additional safety hazards and complicate the situation. Sprinklers are typically meant for fire suppression, and their use in a magazine could potentially introduce water that may react adversely with stored materials, particularly if there are any munitions involved. Water can also lead to electrical shorts or other unforeseen issues within the magazine space.

On the other hand, notifying the duty gunner's mate, utilizing fans or fire hoses on outer bulkheads, and logging the alarm are all prudent actions. These steps help ensure that the situation is assessed and managed properly without introducing unnecessary risks. The focus should be on stabilizing conditions and monitoring the situation rather than immediately applying potentially disruptive cooling methods.