The MVDS is a type of dry cask storage for nuclear fuel.

The ISFSI was licensed to use the Modular Vault Dry Store (MVDS) system designed by FW Energy. The MVDS system is a vault-type structure that houses individual fuel assemblies in separate storage locations within the vault structure. This design has not been used at any other commercial nuclear power plant sites, but the technology has been used in Europe and by DOE at the INL for storage of DOE-owned SNF.