What must all fenced enclosures contain for access purposes?

For access purposes in fenced enclosures, the requirement is to have one gate. This allows for regulated entry and exit. The design of the enclosure with a single gate simplifies the management of access, ensuring that only authorized personnel can enter or exit the area. This is particularly important in settings involving hazardous materials or equipment, such as those associated with compressed natural gas operations.

Having a single gate minimizes the risk of unauthorized access while still providing a controlled point for entry. Additional gates may increase complexity and potential vulnerabilities in securing the area, making the design less efficient. The focus on maintaining a secure environment while facilitating necessary access makes the inclusion of one gate the optimal choice for safety and operational efficiency.