When is guide 111 utilized?

Guide 111 from the Emergency Response Guidebook (ERG) is utilized specifically in situations where the danger is undetermined or not displayed. This guide is designed to assist emergency responders in managing incidents where the exact nature of the hazardous material is unclear. It provides general guidance on protective actions and safety measures, allowing responders to operate cautiously until more information about the specific material can be obtained.

In instances where the danger is known and clearly indicated, responders would typically refer to the corresponding specific guide for that substance to obtain tailored emergency response procedures. Similarly, guide 111 is not meant solely for corrosive substances or flammable liquids; those scenarios would utilize different guides specific to the properties and risks associated with those types of materials. By focusing on the ambiguity of the hazard, guide 111 ensures that safe measures are employed while further assessments are conducted.