The main objective of this investigation was to evaluate the radiological safety of the Nuclear Techniques laboratory of the Faculty of Sciences of ESPOCH because it contains a "radioactive rock", which emits radionuclides that were unknown in principle. Initially, the existing areas in the Laboratory were delimited so that it is possible to determine the environmental equivalent dose rate, for which data were taken at different points both near and far from the source, obtaining as a result (0.085 ± 0.038) μSv/h. The radionuclides present in the rock were known through a Radioactive Content Analysis by gamma spectroscopy, which allowed the identification of several radioactive isotopes, the most relevant for their specific activity being 238U, 232Th, 226Ra, 214Bi. The shielding calculation was carried out using the Maximum Project Dose Rate (TDMP) method and, as a result, it was obtained that the shielding must have a thickness of 4.52cm in lead (Pb), to comply with the dose limits recommended by the International Atomic Energy Agency (IAEA).