Aquila Power Services Corporation, a newly formed holding company of First Reserve Corporation, has announced the acquisition of Welding Services Inc. (WSI). WSI is a provider of engineered welding solutions through its patented weld overlay process, as well as maintenance, modification, and repair services for the power and other industries. The move represents the second step in Aquila’s plan to assemble a buy-build platform of complementary businesses related to power industry services and equipment. Aquila acquired turbine component manufacturer C&W Fabricators Inc. in November 2001. WSI serves the waste-to-energy, fossil-fuelled and nuclear power generation, chemical and refinery, pulp and paper, and other industries. WSI’s highly automated and remotely controlled welding systems enhance, re-establish and preserve the mechanical and structural integrity of critical equipment and components, such as pressure vessels, heat exchange units, nuclear reactors, valves, and turbines that are subject to erosion, corrosion, and general wear.