Years ago a technical supervisor shared a story with me about an incident that changed his commitment to securing the substation facilties that he worked in.
He had been working with a few fellow technicians and an electrician in a substation on upgrading a protection scheme. It soon became time for lunch and they all left the sub to go get a bite to eat. It was decided by one of them that it would be okay to just latch the lock on the gate rather than completely engage the locking mechanism. When they returned from lunch, to their amazement the gate was wide open and some local kids had made their way in and were swinging on the structures. To the kids, it looked alot like a play gym.
They quickly and safely routed the kids out of the substation and explained to them the dangers of what just took place.
They were ashamed and amazed by what just happened. I remember his story every time I lock the substation gates.
Step Potential Hazard Power Point Presentation

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Downed Power Line Safety Tips
Never walk our run near a downed power line shuffle or hop to keep your feet at the same potential or voltage.
Downed Power Line Safety Tips
Safety tips:
Since downed lines can result from a variety of incidents, always be aware of your surroundings, especially during stormy weather or emergency events. Treat all downed power lines as if they are live, or carrying electric current. Do not touch, approach, or try to remove them. It is especially important to keep children and animals away. If a power line falls across a car that you are in, stay in the car.
If you MUST leave it, jump clear so that no part of your body is touching the car when your feet touch the ground.
Keeping your feet close together, shuffle or hop until you are at least 30 feet away.
If someone is injured as a result of electric contact do not try to assist him or her.
You could be injured or killed. Dial 911 and wait for assistance and keep others away from the injured person too.
If you come across a downed line always park away from it, never close to it.
Do not lean on fences, walls or other objects that may have come in contact with an energized power line.
U.S. Department of Labor Substation Definitions and Information

Double click on the graphic above and visit the U.S. Department of Labor to get information on Electric Substations equipment and definitions.