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Sources of Emergencies and Disasters: Natural, Human-Caused and Biological

ASP written lesson, 6 min read. ASP Domain 5: Emergency Preparedness and Response

Written with AI help from the rules it covers, then fact-checked against them. Study aid, not site-specific safety advice. The official rule controls.

What you'll learn

  • Classify a hazard as natural, human-caused or biological
  • List workplace risks typical of each source
  • Rank hazards with a likelihood-severity matrix
  • Explain why biological events behave differently from other emergencies
  • Connect the hazard assessment to the emergency action plan and continuity planning

What this lesson covers

This lesson teaches how to identify and rank the risks from the three sources of emergencies in the blueprint: natural hazards (weather, earthquakes, wildfire), human-caused events (accidents, workplace violence, cyberattack, terrorism) and biological events (pandemics and bioterrorism). It uses Ready.gov and OSHA emergency preparedness categories and a simple likelihood-severity ranking.

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