[en] General Atomics (GA) is developing two legal-weight truck casks for shipping spent pressurized water reactor (PWR) and boiling water reactor (BWR) fuels from existing and proposed reactor facilities to a repository or monitored retrievable storage (MRS) facility. The GA-4 cask is designed to carry four PWR spent-fuel assemblies with a design-basis burnup level of 35 GWd/tonne U and a 10-yr cooling time. The GA-9 cask is designed to carry nine BWR spent-fuel assemblies with a design-basis burnup level of 30 GWd/tonne U and a 10-yr cooling time