P-475 Electromagnetic Occupational Health and Safety Problems of Controlled Thermonuclear Fusion and Innovative Plasma Technologies

Introduction The analyses of staff occupationally connected with maintenance and operation of installations included in the Federal Project “Development of technologies for Controlled Thermonuclear Fusion (CTF) and innovative plasma technologies” (2021-2024) electromagnetic safety problems required electromagnetic fields (EMF) full-scale measurements and hygienic assessment in personnel workplaces. Material and methods EMF frequency and intensity-time parameters measurements and preliminary hygienic assessment in workplaces of Tokamaks: MEFIST-0, T-11M, TUMAN-3M, FT-2, magnetic trap MK-200M personnel were carried out. Results The studies showed very high levels of pulsed magnetic fields (up to 433 mT), despite official regulatory values absence, according to which magnetic component effects mechanisms can be assessed as human health risk factors. Radio frequency EMF levels, despite the short-term exposure, can have adverse human health effects, because in all points of possible employees’ location there were exceeding the maximum permissible values (up to 170 times). 1 Hz-1 kHz frequency range EMF electric and magnetic components amplitude-frequency characteristics peaks may be a human health risk factor too (despite the lack of this frequency range hygienic standards in Russia). Discussion and conclusion EMF assessment in examined CTF staff work places pilot study showed that pulsed magnetic field, radio frequency EMF, 1 Hz-1 kHz frequency range EMF electric and magnetic component levels reach very high values and, despite the absence of officially valid regulatory values, according to factor action mechanisms, can be personnel health risk factor. It is very important to take into account the possibility of potentiating effects of ionizing radiation and the multi-frequency electromagnetic field of complex generation modes combined action.