[en] Nuclear waste is sealed in steel casks and transported through the public domain to disposal sites. The casks are designed primarily to transport and store 30-55 gallon drums of waste. The casks meet safety requirements that govern how they respond to an accidental drop onto rigid ground. In this paper, a finite element method was used to perform impact analysis on a cask. The calculation simulates the deformation of a 55 gallon cask during and after an edge impact form a height of 1.2 m, falling at a 30 deg. incline onto rigid ground. The regulations require that the plastic strain at an impact corner must not exceed the yielding strain of the cask material