Industrial storage rack component withdrawal

The invention relates to a shelving (1) comprising a plurality of compartments (4) having each a respective opening access on the front face of said shelving. The shelving is provided with a detection unit comprising optical sensors for identifying the access to said various compartments. The detection unit comprises at least one optical distance analyser (6), whose field of measurement extends before the front face of the shelving (1), over a plurality of opening accesses. It also comprises an evaluation circuit provided with a memory unit for storing co-ordinates of the monitored opening accesses, and a comparison unit for comparing the co-ordinates of a foreign body which has entered the field of measurement and has been detected by the optical distance analyser (6) with the co-ordinates of the opening accesses.