HI-STAR 330 (also called HI-STAR ATB-1T) is industry’s largest cask for transporting non-fissile waste and activated metal. HI-STAR 330 features a robust stainless-steel body and a heavy lid engineered to provide rapid opening and closing capability to minimize crew dose.

The trunnions in HI-STAR 330 are of collapsible type (a Holtec invention); the cask meets all requirements of 10CFR71 and IAEA standards without an impact limiter package.