Construction of a nuclear reactor began in northwestern Russia The construction of the Leningrad Nuclear Power Plant-2 in the city of Sosnovy Bor has entered its most intensive phase. On Saturday afternoon at LNPP-2, to use nuclear industry jargon, “the first concrete began to pour.” From this moment on, the process of construction of the structure will go non-stop. On this day, it was chilly on the territory of LNPP-2, located in Sosnovy Bor, not far from LNPP-1.