 Around 23 million workers are exposed to ionizing radiation as part of their jobs in hospitals, research institutes and industries such as nuclear power or uranium mining. These workers must use special monitoring equipment and be regularly checked. The IAEA, Radiation Monitoring Laboratory, supports member states to ensure that workers exposed to radiation are safe. Experts from around the world visit the laboratory to receive They learn how to measure the radiation doses received by workers and how to set up quality control systems. IAEA safeguards inspectors are also monitored in the lab. We receive radiation protection training and personal radiation monitoring equipment before departing on an inspection. If there is any suspected exposure to radiation, we report immediately for radiation checks. Dosimeters help workers check their radiation exposure. An specialized monitoring device measures the radioactivity within their bodies. Every year, the laboratory performs around 40,000 measurements in support of IAEA activities in 90 countries. From Vienna, Austria, this is Alejandra Silva reporting for the IAEA.