A Hatch Box can be provided in each operation theater to remove waste materials from the operation theater to the Dirty linen area just adjacent to the Operation Theater. Each Hatch is equipped with two doors and the door shall operate electronically. The Hatch is designed in such a way that only one door should be opened at one time. The UV light shall be installed in the chamber so that it is kept on while both the doors are closed, this UV light has to be automatically turned off in case of opening of either of the doors. There shall be indicators on both sides of the OT so that door open / close status can be monitored from both ends.