FIELD: laser treatment of contaminated surfaces in nuclear units. SUBSTANCE: working energy in the form of at least two laser pulse beams is generated beyond contaminated region, mentioned energy is transmitted by means of at least two optical fibers to section near surface being treated. Laser beams are combined on this section and at least one resultant laser beam is obtained and supplied to mentioned surface by means of at least one reflecting mirror. EFFECT: improved decontamination of surfaces. 16 cl, 5 dwg
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