What is the primary purpose of NFPA 70E's risk control hierarchy?

What is the primary purpose of NFPA 70E's risk control hierarchy?

• A. To rank control methods from most effective to least
• B. To determine training frequency
• C. To document incident energy
• D. To select PPE only

Answer: (A)

The main idea behind the risk control hierarchy is to rank methods for reducing exposure to electrical hazards from most to least effective, so you apply the strongest, most reliable controls first. In NFPA 70E, you start by eliminating the hazard or making the task safe through engineering and design—de-energizing equipment when possible, or using barriers and isolation. If the hazard can’t be removed, you turn to controls that reduce risk through systems and procedures (engineering controls, administrative controls) before relying on personal protective equipment. PPE is considered the last line of defense, used only when higher-level controls cannot fully mitigate the risk. This approach matters because controls that remove or reduce the hazard at the source are more dependable than those that depend on human behavior or equipment worn by the worker. It’s not about training frequency, documenting incident energy, or choosing PPE alone; those are different aspects of safety work. The hierarchy guides you to prioritize and implement the most effective risk reduction measures first, with PPE serving to provide protection only after other controls have been applied.

The main idea behind the risk control hierarchy is to rank methods for reducing exposure to electrical hazards from most to least effective, so you apply the strongest, most reliable controls first. In NFPA 70E, you start by eliminating the hazard or making the task safe through engineering and design—de-energizing equipment when possible, or using barriers and isolation. If the hazard can’t be removed, you turn to controls that reduce risk through systems and procedures (engineering controls, administrative controls) before relying on personal protective equipment. PPE is considered the last line of defense, used only when higher-level controls cannot fully mitigate the risk.

This approach matters because controls that remove or reduce the hazard at the source are more dependable than those that depend on human behavior or equipment worn by the worker. It’s not about training frequency, documenting incident energy, or choosing PPE alone; those are different aspects of safety work. The hierarchy guides you to prioritize and implement the most effective risk reduction measures first, with PPE serving to provide protection only after other controls have been applied.