The standard that provides the requirements for a designated switch or circuit breaker to shut off the power in an emergency at a propane motor fuel dispenser is:

The standard that provides the requirements for a designated switch or circuit breaker to shut off the power in an emergency at a propane motor fuel dispenser is:

• A. NFPA 70
• B. NFPA 58
• C. NFPA 58A
• D. NFPA 30

Answer: (B)

The thing being tested is safety controls for propane dispensing. The standard that requires a designated emergency shutoff to cut power to a propane dispenser is the Liquefied Petroleum Gas Code. It covers LPG systems from design to safety and specifically calls for an accessible, clearly marked emergency switch or circuit breaker that instantly stops power to the dispenser and its equipment in an emergency. This allows responders and operators to quickly isolate electrical hazards and reduce the risk of ignition during a fire or other incident. While other NFPA standards address related areas—NFPA 70 deals with electrical installations in general and NFPA 30 covers flammable liquids broadly—the LPG Code provides the specific requirement for the emergency power shutoff at propane dispensing facilities.

The thing being tested is safety controls for propane dispensing. The standard that requires a designated emergency shutoff to cut power to a propane dispenser is the Liquefied Petroleum Gas Code. It covers LPG systems from design to safety and specifically calls for an accessible, clearly marked emergency switch or circuit breaker that instantly stops power to the dispenser and its equipment in an emergency. This allows responders and operators to quickly isolate electrical hazards and reduce the risk of ignition during a fire or other incident. While other NFPA standards address related areas—NFPA 70 deals with electrical installations in general and NFPA 30 covers flammable liquids broadly—the LPG Code provides the specific requirement for the emergency power shutoff at propane dispensing facilities.