Rad 09 : A unit of radiation absorbed dose (e.g., in body tissue). One rad is equal to an absorbed dose of 0.01 joule / kilogram (1 rad : 0.01 gray). (The joule is the SI unit of energy, abbreviated as J
National Environmental Policy Act (NEPA), Glossary of Terms Used in DOE NEPA Documents, US Department of Energy, Office of NEPA Policy and Compliance, USA 1998. http://energy.gov/sites/prod/files/NEPA_Glossary%2 008_2011.pdf, (EHS - Amer) {515}