Assembly for sensory and visual inspection of a closed storage tank

An assembly for sensory and visual inspection of a closed storage tank for holding petrochemical liquids, wherein the assembly comprises:

• a valve adaptor arranged to be connected to a valve of the storage tank;
• an inspection module arranged to be inserted into the storage tank for sensory and visual inspection, wherein said inspection module comprises at least one camera, two or more sensors comprising a temperature sensor and gas sensor for detection of O2, CO2, H2S, N2, and/or H2O, one or more light source(s), and data transmission means,
• a display module arranged outside the storage tank for visual and data output obtained and received from the inspection module;
• a cable connecting said inspection module to said display module for data transfer between the modules and for power transfer from the display module to the inspection module, and for holding the weight of the inspection module;
• and
• a winch system for holding said cable and for hoisting and substantially vertical movement of the inspection module during sensory and visual inspection of the storage tank, and insertion and or removal of the inspection module into/from the storage tank;
• wherein the valve adapter enables the inspection module to be inserted into the storage tank while the storage tank remains closed.