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In today’s evolving security landscape, the movement of radioactive materials poses a serious threat if left unchecked. Radiation Portal Monitors (RPMs) have become an essential part of national defense and nuclear non-proliferation strategies. Installed at key transit points, these systems work silently yet powerfully to detect and deter the unauthorized transport of radiological substances. What Makes Radiation Portal Monitors Essential? Radiation Portal Monitors are designed to screen people, vehicles, cargo, and containers for hidden radioactive sources. Unlike standard surveillance tools, RPMs serve a very specialized purpose — detecting gamma and neutron radiation that may be emitted by illicit nuclear or radiological materials. This makes them vital tools in preventing acts of terrorism, contamination, and theft of hazardous materials. They operate passively, meaning they don’t emit radiation themselves. Instead, they rely on sensors that can pick up even minimal levels of r...