What is the collective term for substances like reactive chemicals, radioactive materials, and explosives in the context of pre-incident plans?

In the context of pre-incident plans, the term that best describes reactive chemicals, radioactive materials, and explosives is special hazards. This designation is used to identify materials that pose significant risks due to their properties and behaviors under different conditions, particularly during emergencies. Special hazards require specific precautions and protocols during planning and response to incidents, ensuring firefighters are adequately trained to handle such materials safely and effectively.

Hazardous materials generally refer to a broad category that includes any substances that pose a risk to health, safety, or property, but they are not limited to the more unique and dangerous substances characterized as special hazards. Environmental risks pertain more to dangers that relate to ecological impacts rather than immediate hazards to firefighters and emergency response personnel. Controlled substances typically refer to drugs and chemicals regulated by law, which do not encompass the varied range of reactive, radioactive, and explosive materials relevant to emergency response scenarios. Therefore, special hazards is the appropriate classification for those substances when developing pre-incident plans.