Vent pipes shall terminate not more than how many feet from the fill pipe and a point visible from the fill point?

The correct answer indicates that vent pipes should terminate no more than 12 feet from the fill pipe and at a point that is visible from the fill point. This requirement ensures that there is proper ventilation for fuel tanks, which is critical for safe filling operations. If vent pipes were to terminate too far from the fill pipe, it could lead to venting issues, potentially causing pressure build-up in the tank or unsafe conditions during the filling process, including the risk of spills or overflows.

Visibility from the fill point is also a safety consideration, as it allows the person filling the tank to monitor both the filling process and venting conditions. Keeping the vent pipe within this distance helps maintain an effective and safe environment during fuel operations.