Question
What should be done before climbing a tower that supports electrically powered devices?
Answer Options
- A) Notify the electric company that a person will be working on the tower
- B) Make sure all circuits that supply power to the tower are locked out and tagged
- C) Unground the base of the tower
- D) All these choices are correct
Correct Answer: B
Explanation
Before climbing any tower or mast that supports electrically powered devices (such as rotating systems, lighting, or preamplifiers), the absolute most critical safety step is to eliminate the potential for electric shock.
This is done by following the lockout/tagout (LOTO) procedure: Make sure all circuits that supply power to the tower are locked out (power disconnected and a physical lock added to prevent access, with the protected person carrying any/all keys to that lock) and tagged (marked with a tag describing that the power is removed for maintenance). This physical action is meant to prevent anyone from accidentally restoring power to the system while the climber is working, removing the hazard of electrocution.
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