A method of extracting a plug and a removable block during reloading of a nuclear reactor with a heavy liquid metal coolant, comprising: installing a plug transportation device having a supporting ring with projections on the plug, installing an additional cargo on the plug transportation device, installing and fixing an inner frame of a cable reduction box having fastening screws on a cover of a reactor monoblock, turning the supporting ring of the plug transportation device to a position where the projections enter an operating area of the fastening screws of the cable reduction box, dismantling the additional cargo, installing an external part of the cable reduction box on the reactor monoblock, replacing an internal medium of an internal cavity of the cable reduction box, installing a guide channel on the cable reduction box, installing a reloading armor having dampers on the guide channel, replacing the internal medium of the reloading armor and the guide channel, moving the plug transportation device with the plug into the reloading armor, transporting the reloading armor with the plug into a plug shaft where the plug is unloaded, re-installing the guide channel on the cable reduction box, installing the reloading armor with a removable block transportation device on the guide channel, replacing the internal medium of the internal cavity of the cable reduction box and an internal cavity of the reloading armor, lowering an automatic grip of the reloading armor to coupling with the removable block, moving the removable block transportation device with the removable block to the highest position in the reloading armor, transporting the reloading armor with the removable block to a shaft for removable block disassembly, and unloading the removable block. installing a plug transportation device having a supporting ring with projections on the plug, installing an additional cargo on the plug transportation device, installing and fixing an inner frame of a cable reduction box having fastening screws on a cover of a reactor monoblock, turning the supporting ring of the plug transportation device to a position where the projections enter an operating area of the fastening screws of the cable reduction box, dismantling the additional cargo, installing an external part of the cable reduction box on the reactor monoblock, replacing an internal medium of an internal cavity of the cable reduction box, installing a guide channel on the cable reduction box, installing a reloading armor having dampers on the guide channel, replacing the internal medium of the reloading armor and the guide channel, moving the plug transportation device with the plug into the reloading armor, transporting the reloading armor with the plug into a plug shaft where the plug is unloaded, re-installing the guide channel on the cable reduction box, installing the reloading armor with a removable block transportation device on the guide channel, replacing the internal medium of the internal cavity of the cable reduction box and an internal cavity of the reloading armor, lowering an automatic grip of the reloading armor to coupling with the removable block, moving the removable block transportation device with the removable block to the highest position in the reloading armor, transporting the reloading armor with the removable block to a shaft for removable block disassembly, and unloading the removable block.