cesium 137 hazardous danger radioactive industry energy atomic sign nuclear radiation cesium 137

screenshot circle font blue brand purple light lighting organ text diagram presentation multimedia wheel gadget poster line design logo render hazardous danger radioactive industry energy atomic sign nuclear symbol radiation safety toxic chemical caution contamination material waste environment chemistry warning power cesium diagnostic hospital laboratory pollution biohazard calibration background protection science texture disaster risk clean barrel metal drug medicine package test ecology health care medical x-ray alert dirty technology 137