What is the gate requirement for fenced enclosures at CNG installations?

The requirement for a gated enclosure at CNG installations emphasizes safety and security. Having one gate that must be locked when unattended serves to prevent unauthorized access to potentially hazardous areas where CNG is stored or processed. This measure is crucial because it helps to protect not only the equipment but also the safety of personnel and the public from potential incidents involving compressed natural gas.

The focus on a single lockable gate streamlines procedures for those who need to access the facility while still maintaining effective security measures when the site is not actively monitored. This protocol mitigates risks associated with unauthorized entry, making it a practical solution for ensuring safety without overcomplicating access for authorized personnel.

Other options suggesting two locked gates or that no gate is required do not align with the best practices for industrial safety and security protocols. Additionally, the idea that gates must be open at all times would not only compromise security but also elevate the risk of accidents, given the volatile nature of compressed natural gas. Thus, the requirement of a single locked gate strikes a balance between security and accessibility.