A system includes a disinfection chamber having an interior volume, a radiation source to emit radiation into the interior volume, a radiation sensor circuit to detect radiation in the interior volume, an independent monitoring circuit to detect radiation in the interior volume, and a computing device that has a memory and a processor. The memory stores first radiation values captured by the radiation sensor circuit, second radiation values captured by the independent monitoring circuit, and computer instructions. The processing unit executes the computer instructions to start the emission of radiation, generate first and second accumulated radiation values from the stored values, respectively, and stop the emission of radiation after reaching a first radiation threshold. Based on a comparison of the first accumulated radiation value to the second accumulated radiation value, a validated disinfection signal or an error signal will be asserted.