Propane cylinder on construction site must be equipped with which of the following?

Propane cylinder on construction site must be equipped with which of the following?

• A. Vaporizer
• B. Collar
• C. Standing pilot
• D. Random gas selector

Answer: (C)

The concept being tested is ignition safety for propane-fired equipment. A standing pilot provides a small, continuous flame that stays lit so the main burner can be ignited immediately when gas is supplied. This is important on a construction site because it gives quick, reliable ignition and acts as a flame safeguard—if the pilot goes out, the gas can be shut off to prevent unburned gas from accumulating. The other options don’t fit this ignition-focused need. A vaporizer is a device that converts liquid propane to gas for some appliances, but it’s not a safety/ignition feature required on the cylinder itself. A collar protects the valve, which is a physical protection feature rather than an ignition safety feature. A random gas selector isn’t a recognized safety device for propane systems.

The concept being tested is ignition safety for propane-fired equipment. A standing pilot provides a small, continuous flame that stays lit so the main burner can be ignited immediately when gas is supplied. This is important on a construction site because it gives quick, reliable ignition and acts as a flame safeguard—if the pilot goes out, the gas can be shut off to prevent unburned gas from accumulating.

The other options don’t fit this ignition-focused need. A vaporizer is a device that converts liquid propane to gas for some appliances, but it’s not a safety/ignition feature required on the cylinder itself. A collar protects the valve, which is a physical protection feature rather than an ignition safety feature. A random gas selector isn’t a recognized safety device for propane systems.