An emergency plan should be reviewed and updated at least every one or two years and after the key events, including plan activation is the true statement.
Explanation:
Emergency planning happens as a response to an unforeseen happening which is preplanned and implemented during the hazardous situations. Emergency plans prevent causalities. Reduces damages and enables the quick resumption of normalcy after the life endangering incident. Such plans promote awareness in people about how to react and be alive to the situation when there is an emergency.
At the planning stage, it is necessary for the subject matter experts to be present and design the plan. An emergency plan include all possible action taken while taken during any disaster , the resources to be used at that time, list of the contact numbers of the emergency personnel, large maps which depicts the evacuation routes.