Abstract: The new fuel element transportation container is a specific equipment designed for transporting 493 reactor’s fuel elements. In order to insure the safety of fuel elements during transportation and fulfill the requirements of standard GB 11806—2004, thermal design calculation and validation experiments were carried out. The accuracy of the container’s thermal design was proven by comparing thermal design results with thermal experimental data. The safety of the new fuel elements can be insured and the requirements of GB 11806—2004 can be fulfilled by using the new fuel elements transportation container under both normal transport condition and accidental transport condition.