Naturally Occurring Radioactive Material (NORM)
Naturally Occurring Radioactive Material (NORM) and Technologically-Enhanced Naturally Occurring Radioactive Material (TENORM) are measureable concentrations of radioactive substances found in the world. The distinction between the two is that NORM is not produced or modified due to human effort, and is found in the environment in measureable amounts as a naturally-occurring material. NORM becomes TENORM when the material is altered by commercial or industrial use, processing, concentration, exposure, or otherwise had its natural radioactivity “technologically enhanced” to emit elevated levels of radiation.
Detection is undeniably crucial to evaluating the potential and degree of hazards associated with NORM and TENORM materials. Ludlum Measurements, Inc manufactures highly-sensitive instruments designed to accurately detect and measure radioactivity. With instruments and flexible kits targeted to perform for specific markets, and the expertise to recommend the best product for the application, Ludlum Measurements is ready to help keep people and the environment safer.
For additional details you may wish to read these PDF files. Be aware that regulations and standards may change.
• USGS NORM Fact Sheet.pdf
• Naturally Occurring Radioactive Materials (NORM).pdf
• Mineral Sands Appendix To NORM Information Paper.pdf
Potential Sources of NORM include