Radioactivity measurement on industrial fly ash samples in Bandung using gamma Spectrometry and alpha-beta counting system Available to Purchase

Coal is a fuel that is often used in industry by converting the kinetic energy of combustion steam. However,this continuous combustion creates one of the problems, namely the resulting combustion residue in the form of fly ash and bottom ash which is still contaminated with its radionuclide. Based on the Government Regulation of the Republic of Indonesia no. 22 of 2021 about the implementation and management of environment and concerning to hazardous waste, that any toxic and hazardous waste is prohibited from being used as a substitute for raw materials, as a substitute for energy sources, as raw materials having a radioactivity value exceeding 1 Bq/g (one Becquerel per gram) for each radionuclide in the uranium and thorium series or 10 Bq/g (ten Becquerel per gram) for potassium. Radioactivity measurements have been carried out on four undisclosed samples of fly ash from several industries in Bandung using a Gamma Spectrometer (HPGe) and four undisclosed samples of fly ash using Alpha-Beta Counting System. The purpose of this measurement is as a preliminary study of the level of radioactivity in fly ash produced from coal burning industry activities in the Bandung area. Based on the results of gamma spectrometry measurements, the radionuclides found were Pb-214, Bi-214, Ra-226, Pb-212, and K-40 with the radioactivity concentration of sample ranged from 19.209 Bq/kg to 292.184 Bq/kg. All of the sample has the activity concentrations below the limit value by the Government Regulation of Republic Indonesia no. 22 of 2021. Result of the measurement of gross alpha is ranging from 0.0101 Bq/g to 0.0344 Bq/g and gross beta is ranging from 0.0506 Bq/g to 0.2398 Bq/g.