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This is a Design Bid Build Construction Contract to Dry Dock 4 Refueling Complex at Norfolk Naval Shipyard, Portsmouth, VA. The project work consists of construction of a new Dry Dock 4 Refueling Comp... This is a Design Bid Build Construction Contract to Dry Dock 4 Refueling Complex at Norfolk Naval Shipyard, Portsmouth, VA. The project work consists of construction of a new Dry Dock 4 Refueling Complex that will be comprised of a west end Railcar Enclosure Complex and an east end Clean Enclosure Complex. The Railcar Enclosure Complex will consist of Railcar Enclosures (RCE) #1 and #2 and their associated vestibules and passageways. The complex will support the parallel use of two railcars along with their associated support equipment and required operations. The Clean Enclosure Complex will consist of Clean Enclosure (CE) #1 and #2 and their associated vestibule and passageways. The Clean Enclosures are used for equipment checkout and mock-up training required to support shipboard operations. Additionally, the enclosures consist of storage areas, multiple high and low bay work areas, bridge cranes, movable roofs, access control and all associated HVAC, mechanical, electrical, alarm, controls and communication systems. The enclosures require clean room finishes and HEPA HVFAC filters in most areas. Additional scope includes new utility capacity and infrastructure, modification to existing utilities and modifications to existing enclosure HVAC, electrical, alarm, controls and communication systems. The Railcar Enclosure and Clean Enclosure structural steel modules are to be constructed off-site and then delivered to the shipyard. All on-site work associated with this project will be executed within the shipyard Controlled Industrial Area (CIA) which requires unique access credentials and strict limitations on the nature of materials and equipment.