Protective equipment is a research domain focused on the investigation, development, and evaluation of materials, devices, and systems engineered to mitigate specific hazards and protect personnel or critical infrastructure from exposure to harmful agents or extreme conditions. This field examines design principles, material science, performance efficacy, and integration strategies to ensure safety and maintain operational integrity in hazardous environments, particularly concerning protection against radiation, high-energy emissions, and other risks inherent in nuclear or similar technological processes.