Monitored Retrievable Storage Conceptual Studies: Tunnel-Rack

摘要

This report provides a system description and cost estimates for a tunnel-rack MRS facility. The facility description is divided into four parts: (1) the receiving and handling (RandH) area, (2) the interface facility, (3) the on-site transport system, and (4) the storage system. The storage system consists of underground tunnels containing steel storage racks, which in turn, contain spent fuel, HLW, or remote-handled-TRU canisters. Natural circulation removes decay heat through a system of ventilation tunnels. The interface facility joins the RandH area to the storage area. The on-site transport system moves material between these two areas. The MRS facility has been designed to meet handling rates of 1800 and 3000 MTU/yr. The corresponding peak inventories are 15,000 and 72,000 MTU. Three types of cases were considered, based on the material to be stored: spent fuel only; HLW and TRU waste; and HLW only. For each of these three types, a cost estimate was done for a 15,000 and a 72,000 MTU facility, resulting in six different cost estimates. (ERA citation 09:027919)