The subject of claimed invention is a disinfection tunnel, in particular for surface disinfection of undurable objects, especially the objects made of materials which cannot be treated with chemicals, like wooden pallets, cardboard or paperboard separators, containers, boxes, bags, bottles and others. The disinfection tunnel has a roller conveyor (1) driven by a driving unit with a speed regulated by a controller, optionally with an inverter, and which is spreading out along the housing (2). The housing is divided into three chambers, an inlet chamber (A), an irradiation chamber (B) and an outlet chamber (C). These chambers are separated by the protective internal flexible curtains (7b, 7c). The inlet chamber (A) and the outlet chamber (C) constitute the buffer zones protecting from UV radiation and are provided with the protective external flexible curtains (7a, 7d). The curtains can be made from overlapping rubber strips. The housing (2) can be assembled from the modules (D). The UV light sources (4) are installed in the irradiation chamber (B). The device is provided with an automatic UV light detection system switching-off the UV light sources (4) if any one of the protective internal flexible curtains (7b, 7c) is not closed. Invented disinfection tunnel can be connected to the production lines, in particular in food processing plants or in the packages producing plants.
