Issues Related to Design and Construction of Prestressed Concrete Inner Containment Dome of Reactor Building with Large Openings

摘要

The newly conceived structural arrangement of reactor building of a typical Indian Nuclear Power Plant based on Pressurised Heavy Water Reactor (PHWR), is a double containment system with segmented spherical domes. Both the inner containment structure (prestressed concrete) and the outer containment structure (reinforced concrete) are founded on a common reinforced concrete raft. The provision of four major openings with dished head type sealing arrangement, in inner and outer containment domes, is the innovation in the design of Indian Containment Structures. The present paper deals with the issues related to the performance of the steel-concrete interfaces with respect to the separation that may occur in the inner containment dome due to the situations arising out of prestressing cable and other associated details for the prestressing anchorages, steel embedded parts at the openings, and passive reinforcements.