L4007-2 Radiation Protection Division REFERENCES l AR 40-5, Preventive Medicine l AR 40-46, Control of Health Hazards from Lasers and other High Intensity Optical Sources l Department of Defense Instruction (DoDI) 6055.11, Protection of DoD Personnel from Exposure to Electormagnetic Fields (EMF) at Radio Frequencies (RF) from 3 kHz to 300 GHz l Title 21, Code of Federal Regulations, Laser Products
L4007-3 Radiation Protection Division Outline l Ionizing vs. Nonionizing Radiation l Biological Effects l Typical Nonionizing Systems in DOD l Control Measures
L4007-4 Radiation Protection Division Ionizing vs Nonionizing Radiation l Ionizing Radiation – Higher energy electromagnetic waves (gamma) or heavy particles (beta and alpha). – High enough energy to pull electron from orbit. l Nonionizing Radiation – Lower energy electromagnetic waves. – Not enough energy to pull electron from orbit, but can excite the electron.
L4007-5 Radiation Protection Division Examples on Nonionizing Radiation Sources l Visible light l Microwaves l Radios l Video Display Terminals l Power lines l Radiofrequency Diathermy (Physical Therapy) l Lasers MICROWAVE GAMMA ULTRA V VISIBLE INFRARED TV AM RF
L4007-6 Radiation Protection Division Biological Effects l Radiofrequency Ranges (10 kHz to 300 GHz) – Effects only possible at ten times the permissible exposure limit – Heating of the body – Cataracts – Developing fetus is at no greater risk than mother