What does the NFPA 1192 require regarding the protection of shutoff valves?

The NFPA 1192 establishes specific standards to ensure safety in the installation and maintenance of systems, particularly those connected to fuel gas service. Regarding the protection of shutoff valves, the requirement for the valves to be protected by a ventilated cap or collar is essential. This protective measure helps to guard against contamination, physical damage, and environmental factors that could compromise the functionality of the valve.

By using a ventilated cap or collar, it allows for airflow to prevent the buildup of harmful gases while also shielding the valve from debris and water, which could otherwise lead to rust or corrosion. This helps maintain the integrity and reliable operation of the valve, which is critical in preventing leaks or failures that could result in hazardous situations.

In contrast to the other options, which include installation considerations and material specifications, the focus on protecting shutoff valves specifically emphasizes operational safety. Such safety measures are vital in preventing potential risks associated with natural gas or other fuel systems, which the NFPA standards aim to mitigate.