Safety Interlock

U.K Fortress mGard is a pure-mechanical trapped key interlock system designed by Fortress for high-risk areas on ships, mainly applicable to equipment isolation scenarios in ship engine rooms, auxiliary engine rooms, and fuel/lubricating oil tanks: During navigation, power sources (electrical/pneumatic) of main engines, boilers, fuel pumps and other equipment on ships need to be isolated in a fixed sequence (e.g., cut off fuel supply first → then disconnect power). mGard enforces the operation process through key interlock logic—only after completing the previous isolation steps, the key is released, allowing authorized crew to open the equipment guard door. Its all-mechanical structure requires no electrical wiring, adapting to explosion-proof areas on ships (e.g., near oil tanks), while the stainless steel material resists seawater moisture corrosion and continuous vibration during ship navigation, ensuring safety protection under harsh working conditions.