The Double-Wall Canister (DWC) is the heart of the interim dry storage system NUHOMS® which will be implemented at the ISF-2 for the long-term interim storage of spent nuclear fuel (SNF) from Chernobyl NPP RMBK-1000 reactors.
The main purpose of the DWC is to ensure 100 years (ISF-2 design service life) of dry, interim, environmentally isolated storage of SNF in an inert gas environment.
The DWC system consists of an enclosure vessel made of two welded leak-tight shells (canister) which form two separate confinement boundaries to potential spread of radioactive materials, an internal basket and Fuel Tubes (FT), and is designed for horizontal placement of each DWC inside the individual compartments of the concrete storage module (CSM).