15: Natural Phenomena

Node Natural Phenomena

Definition/Typical Issues

Was the incident a result of a natural phenomena event?

Natural phenomena include:

  • Tornadoes
  • Hurricanes
  • Earthquakes
  • Lightning
  • Floods
  • Seiches
  • Tidal waves
  • Earthquakes
  • Forest fires
  • Mud slides
  • Other events

Note 1: There is no path beyond this node (it is a dead end) because these external events cannot be controlled by the organization through better organizational systems. However, any failures of the organization to address mitigation of these issues through design and management systems should be addressed through other portions of the Root Cause Map™.

Examples

Example 1

  • A process upset occurred in the facility because power was lost as a result of lightning striking a transformer.

    Note: Issues associated with backup power systems should be addressed to determine whether emergency power systems are adequate.

Example 2

  • The plant site was flooded when the river overtopped the levee designed for a 100-year flood.

    Note: Issues associated with facility siting should be addressed to determine how the potential flooding was addressed as part of the design process.

Example 3

  • Inventory in the warehouse was damaged when the warehouse was flooded following a heavy rain.

    Note: The design and location selection process should also be addressed to determine why it did not adequately address the potential for flooding.

Example 4

A rabid fox bit a worker who was checking some equipment in a remote location.

Typical Recommendations

  • Ensure that natural phenomena are considered in the design process.
  • Ensure that natural phenomena are considered in the development of procedures and training.
  • Ensure that risk acceptance criteria are properly set and utilized for assessing the risk associated with natural phenomena events.

Cross-References 

Version 10 Element(s)
Node ID Node Name
11 Natural Phenomena

 

Maritime Element(s)
Node ID Node Name
14 Uncharted/Unknown Hazard to Navigation
15 Sea/Weather Condition
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