What is the main function of a Point Detection sensor in nuclear facilities?

The main function of a Point Detection sensor in nuclear facilities is to detect unauthorized personnel. These sensors are designed to monitor specific areas and provide alerts when individuals enter restricted zones, ensuring the security of sensitive sites. By focusing on detecting movement or presence in critical areas, Point Detection sensors play a vital role in maintaining safety and compliance with nuclear security protocols.

This capability is crucial in preventing unauthorized access, which could pose risks to both personnel and the integrity of the facility. The other functions mentioned, such as tracking inventory levels, monitoring environmental conditions, and providing communication links, while important in various contexts, do not align as closely with the primary security focus required in nuclear facilities.