In most situations emergency personnel can protect the public by isolating and denying entry to contaminated areas. Initial rescue actions should concentrate on removing able-bodied persons from immediate danger. Involvement in complicated rescue problems or situations should be evaluated before being attempted.

When the probability is high that the victim cannot be saved or is already dead, rescue should not be attempted if it will place the rescuer at unnecessary risk. The danger of exposure to unknown chemicals or a potential explosion may make the risk unacceptable.

The following should be considered in attempting a rescue during a hazardous materials emergency:

A. Has the presence of a victim been confirmed visually or by other credible sources?
B. Is the person conscious or responsive?
C. How long has the victim been trapped or exposed? Is he/she viable?
D. Is the leaking material pooling or vaporizing in the area of the victim?
E. What are the properties of the material involved? What is the concentration of the material around the victim?
F. What special equipment is available to assist in this effort?

Consideration of these questions will help in weighing the likelihood of a successful rescue against the overall risk to the rescuer.