What is the minimum height for a protective fence around CNG installations?

Answer: C — 6 feet

The minimum height for a protective fence around CNG installations is established to ensure safety by providing a sufficient barrier to prevent unauthorized access and to minimize risks associated with potential hazards of compressed natural gas. A height of 6 feet is typically required to deter individuals from easily climbing over and to act as an effective physical security measure. This height also helps to ensure that the fence can adequately contain any potential incidents within the installation area, such as leaks or equipment failures, away from the surrounding environment and public. Additionally, regulatory bodies often specify this height in guidelines to enhance overall safety in facilities that handle potentially dangerous materials.