The development of small nuclear power plants (SNPPs) is one of the priority areas of the Rosatom State Corporation. The relevance of SNPP development is determined by the economic feasibility and prospects for their use in hard-to-reach areas. SNPPs are expected to be used as a promising energy source in regions with decentralized power supply. The main core of the reactor No. 1 at the "Akademik Lomonosov" floating thermal power plant has been successfully decommissioned. Core fuel elements developed by the JSC "VNIINM" have passed pre-reactor and reactor tests, as well as post-reactor studies, which, together with preliminary operation results, confirmed their operability and potential for use.