United States Nuclear Regulatory Commission - Protecting People and the Environment

Resolution of Generic Safety Issues: NUREG-0933: Footnote 43 ( NUREG-0933, Main Report with Supplements 1–35 )

43.Regulatory Guide 1.117, "Tornado Design Classification," U.S. Nuclear Regulatory Commission, June 1976, (Rev. 1) April 1978. [7907110104].