HI-STORM UMAX Unveiled at USNRC Pre-Submittal Briefing
On April 19, 2012, Holtec International presented a new subterranean multi-purpose canister (MPC) based storage system in a pre-submittal briefing to the USNRC. In development since 2010, HI-STORM UMAX (for Underground MAXimum capacity) is physically sized to store all of the used nuclear fuel produced in the United States and all canisters currently licensed in dry storage in the country making it a truly universal on-site storage facility. HI-STORM UMAX, like its forerunner HI-STORM 100U certified by the USNRC in 2009, stores the MPC entirely below-ground and emits virtually zero dose. HI-STORM UMAX (Docket Number 72-1040) has heat rejection capacity in excess of 47 kW and stores up to 37 PWR and 89 BWR assembly MPCs. Like HI-STORM 100U, HI-STORM UMAX is “security-friendly”, providing a clear, unobstructed view of the entire ISFSI (see figure below) from any location and the closure lid is a massive steel weldment filled with concrete. (more…)