How Do Cardlock Fuel Sites Differ from Retail Stations?

A cardlock is fleet infrastructure, not retail. The engineering centers on unmanned operation: access control at every lane, a fuel management system that bills by vehicle, security lighting and cameras for empty nights, and safety systems that work with nobody watching. Designing it as a retail station without the store misses the point. The data, security, and automation systems are the project.

The access and billing design covers card readers or keypads at each lane, the fuel management controllers, data networking back to the servers, and the equipment room or building housing it all — with UPS backup so a power blip doesn't strand the billing. MEP design covers the high-flow dispenser power and controls, site lighting designed for unmanned nighttime security, camera power and data, and the emergency shutdown stations. The classified-area electrical rules apply exactly as at a retail station. Civil and structural work covers the truck-scale lanes and canopy, the equipment building foundation, gate and fencing foundations, and the grading and spill containment. Stormwater and oil-water separation follow the same rules as any fueling site.

The unmanned philosophy has to drive every system choice. My checklist: The practical checklist I use on these jobs:

• Design the access control, billing, and data backbone as core infrastructure
• Light and camera the site for unmanned 3 AM operation
• Make emergency shutdown and leak alarming automatic and remotely monitored
• Provide UPS backup for the fuel management and billing systems
• Apply the same classified-area and containment rules as a manned station