Respiratory Protective Device 2 : An apparatus, such as a respirator, worn by an individual for the purpose of reducing the individual's intake of airborne radioactive materials
Jefferson Lab Radiation Control Manual Glossary, Revision 3, Thomas Jefferson National Accelerator Facility, Jefferson Science Associates, LLC, Southeastern Universities Research Association SURA, U.S. Department of Energy, Newport News, VA, USA 2004. https://www.jlab.org/accel/RadCon/JLAB_RadCon_Manu al.pdf, (Rad Sfty, Prot and Cont - Amer) {1023}