When should security isolation of the incident scene start?

A.
As soon as the disaster plan is implemented

B.
Immediately after the emergency is discovered

C.
After all personnel have been evacuated

D.
When hazardous materials have been discovered at the site

Explanation:

Isolation of the incident scene should begin as soon as the emergency has been discovered.
Authorized personnel should attempt to secure the scene and control access; however, no one
should be placed in physical danger to perform these functions. Its important for life safety that
access be controlled immediately at the scene, and only by trained personnel directly involved in the
disaster response. Additional injury or exposure to recovery personnel after the initial incident must
be tightly controlled. Source: Emergency Management Guide for Business and Industry, Federal
Emergency Management Agency, August, 1998.