Where must the manual gas shut off be installed?

The correct answer is that the manual gas shut off must be installed within 5 feet of the equipment. This requirement is crucial for safety reasons. The closer proximity ensures that personnel can quickly and easily access the shut-off valve in case of an emergency, such as a gas leak or equipment malfunction.

Accessibility is vital because in emergency situations, every second counts. Having the shut-off within 5 feet minimizes the time it takes to stop the gas flow, reducing the risk of potential hazards, such as fires or explosions. This standard is in place to protect both equipment operators and the surrounding environment from gas-related incidents.

In contrast, distances larger than 5 feet would increase the response time during emergencies, making it difficult for workers to react swiftly to potential dangers. Thus, the requirement to have the shut-off valve positioned close to the equipment illustrates a commitment to safety and effective emergency response protocols within gas-driven equipment operations.