The legislation of the Russian Federation approved an official list of works, the implementation of which requires a mandatory membership of the SRO contractor and obtaining appropriate tolerances for electrical work. The list was approved by a special order of the Ministry of Regional Development No. 624. According to paragraph 23.6, contractors need to allow SRO if they are authorized to install electrical installations, signaling and automation systems, equipment, on complex technically, unique and especially dangerous facilities. The list of works for which access is given is given in Article 48.1 GRK.