Fort St. Vrain PCRV Bottom Head Construction

A construction technique, which required precise design of temporary handling equipment and support structures, is described. The technique involved yard assembly and move-in of the Prestressed Concrete Reactor Vessel bottom head assembly. Design of all move-in and temporary support equipment was in accordance with stringent deflection and final position tolerances. The parallel yard assembly of the bottom head and construction of the PCRV support ring in the building structure resulted in a critical path schedule savings of approximately 7 months. All temporary handling equipment and support structures performed as designed, and all as-built dimensions were within specification tolerances.