Cw carbon-dioxide lasers with the output power of 15 kW have been used in such modern technological processes as welding, cutting and surface hardening. However there arise the problems which require the increase of power up to 50 kW. As an example, to disassemble some nuclear reactors it is necessary to cut plates made of special types of stainless steel up to 330 mm thick. The work of Gorny et al. gives a simple formula representing the thickness of the cut metal h versus the absorbed laser beam power W, its diameter d, cutting rate v, gas flow rate through the cut area G and thermophysical characteristics of metal. We show substitution of well-known constants for stainless steel into the formula. Plots of this dependence are given for cutting rate of 0.1 and 0.3 cm/s with different gas flow rates. It follows from the plots that, first, in order to increase cut depth, a simultaneous increase of power and gas flow rate G are required and secondly, with regard for the losses, power should equal 30 divided by 100 kW. The experience of the developments of high power cw CO and carbon dioxide lasers shows that the least mass and overall dimensions as well as the best operation characteristics with the power level of 30 kW and more refer to gas-dynamic lasers (GDL) due to the following advantages: (1) direct transformation of the portion of thermal energy into the coherent IR radiation; (2) absence of high-power electric sources; (3) absence of additional ejectors; (4) relative easiness in maintenance; and (5) application of compact aircraft units and devices with completed service life. The purpose of this paper is to consider the possibility of the creation of mobile self-contained technological gas-dynamic carbon- dioxide laser (SCT GDL) on the basis of gas-turbine engine (GTE).