A project is now in progress for construction of a high intensity proton accelerator facility. Because of its very high performance of beam power and its energy, the facility requires very thick shielding. In order to establish a reasonable shielding, semi-empirical formulas and simplified design codes were mainly adopted, partially backed up by some Monte Carlo methods. Two simplified codes we adopted have been improved for application to higher energy radiation. The present paper reviews the status of the shielding design study of the facility and refers to the requirement of higher energy nuclear data from the viewpoint of an accelerator shielding design.