Areva has announced the successful delivery of two Enhanced Once-Through Steam Generators to the Three Mile Island Generating Station (TMI) in Dauphin County, Pennsylvania, US on 30 September 2009. The steam generators arrived safely and on schedule after an eight-week trip that began at Areva’s Chalon/St-Marcel facility in France, where they were manufactured. The replacement steam generators are part of a USD 300 million investment Exelon is making in the TMI Unit 1 reactor to extend the plant’s operations for decades to come. Areva says that this was the most challenging large-component delivery in their history. Delivering the generators required complex logistics involving government and regulatory agencies in two states and numerous local communities and authorities. Areva partnered with several companies to complete this delivery. Michael Baker Jr. Inc. provided engineering services; Kinsley Construction Inc. was responsible for all infrastructure construction and reinforcement; and Fagioli, Inc. transported the two units. Each steam generator weighs more than 510tns, measures over 73ft long and more than 12ft in diameter. Total weight for each transport with steam generator was about 825tns and measured 53ft long, 17ft wide and 24 feet high.