What safety provision is used in buildings that utilize flammable gas?

The use of pilot flames interlocked with fuel delivery valves is a critical safety provision in buildings that utilize flammable gas. This system ensures that gas is only allowed to flow when there is a pilot flame present, significantly reducing the risk of gas leaks igniting and causing explosions or fires. By having this interlock feature, if the pilot flame goes out or is extinguished for any reason, the fuel delivery valves automatically close, preventing any additional gas from entering the system. This proactive measure is essential for maintaining a safe environment in areas where flammable gases are used.

While other safety measures, like automatic fire suppression systems, smoke detectors, and ventilation systems, contribute to overall safety by detecting and suppressing fires or managing air quality, they do not address the immediate risks associated with the presence of flammable gases as directly as the interlocking pilot flame system does. Thus, although these options play important roles, the interlocked pilot flames offer a more specific safety mechanism tailored to the hazards posed by flammable gas.