Fuel Farm Evaluation & Upgrade 400Hz Ground Service System Charleston International Airport, South Carolina Client Challenge: Aging aircraft ground power systems with high maintenance costs and obsolete replacement parts had become a limiting factor for gate aircraft mix and lease attraction.   PRIME Solution: Conducted feasibility studies and cost benefit analysis for upgrades to determine effectiveness of a point-of-use power upgrade and replacement vs. a new central system.  Proposed solution will realize a maintenance cost reduction of 50%. Prime Engineering provided fueling, civil, environmental, and electrical engineering services for upgrades of passenger loading and aircraft support systems at the Charleston International Airport.  Project scope included modification and/or replacement of the following items: Site stormwater piping and containment control Fueling control systems Fuel pumping and dispensing systems Pumping station fuel containment pad Overfill/grounding verification systems Site grading Emergency power systems 400 Hz Ground Service System Roll over thumbnail to view picture