Toolbox Talk: Lightning & Thunderstorms
Lightning, heavy rainfall, and high winds accompany the nearly 100,000 thunderstorms that occur annually in the United States. These storms can result in injuries, loss of life, and property damage.
Thunderstorms and lightning can be a significant issue for employees working outdoors. The risk of being struck by lightning increases when individuals are outdoors near isolated tall objects, in open spaces, and close to metal objects.
Proper thunderstorm and lightning safety procedures or guidelines should be contained in an emergency action plan, which should address several areas, such as:
• A chain of command
• A means of monitoring weather conditions
• A list of designated safe sites to take shelter
• Criteria for suspension and resumption of work
• The use of recommended safety strategies
The best way to protect yourself from thunderstorms is to avoid the threat. If you are caught outside during a thunderstorm, take shelter in a substantial, permanent, enclosed structure that contains plumbing or wiring. If such a place is unavailable, then select an enclosed metal vehicle for a suitable shelter. Do not seek shelter in open areas, on high grounds under tall isolated objects, or near materials that can conduct electricity. Make sure the place you choose for shelter is not prone to flooding during heavy rains, and go to a low-lying, open place, away from trees, poles, and metal objects that are not susceptible to flooding when no other safe cover is available.
