Step 4: Hazard Analysis

Step 4B. Determine the Severity and Probability of each potential cause. This will lead you to the Hazard Matrix Score. Step 4: Hazard Analysis PROBABILITY RATING:

• Frequent - Likely to occur immediately or within a short period
  (may happen several times in one year)
  
• Occasional - Probably will occur (may happen several times
  in 1 to 2 years)
  
• Uncommon - Possible to occur (may happen sometime in 2
  to 5 years)
  
• Remote - Unlikely to occur (may happen sometime in 5 to 30
  years)