Following figure illustrates an effective overall layout of a process and off-site plot plan.
- The administration area is immediately inside the plant’s main entrance, as are maintenance and fire-fighting equipment.
- Process units and the utility plant are located in the central and eastern section of the plot, and allowances for future expansion are made.
- Storage tanks are located in the western and southern sections of the plot.
- Truck and rail loading and unloading areas are located together in the south and southwest corners of the plot.
- A flare stack, a cooling tower, and treating ponds are in the southeast corner.
- Process units are located as far away as is practical from the storage tanks and product-loading areas.
- In cold climates, the wind will carry exhaust gases from the cooling tower, across the storage tanks, and away from busy process units.
- Tank farms can occupy vast areas of valuable real estate within a process facility.
- Development of the optimum design, considering all applicable codes and regulations, is achieved only through close attention to safety and economics.
Although many solutions to layout problems are possible, a mixture of proven methods—along with the commonsense lessons of trial and error—will produce the optimum design.