The Siberian Chemical Combine (Russian: Сибирский химический комбинат) was established in 1953 in Tomsk-7 now known as Seversk, in the Tomsk Region as a single complex of the nuclear technological cycle for the creation of nuclear weapons components based on fissile materials (highly enriched uranium and plutonium).

[1][2] The Siberian Chemical Combine played an important role in the Soviet Union's nuclear weapons program.

[3][4] As the Cold War came to an end, the Siberian Chemical Combine's HEU production ceased and the last plutonium production nuclear reactor at the facility was shut down in 2008.

[6] Although production has halted, the facility remains a major site for storage and handling of weapon-usable materials and nuclear weapon components.

[7] The facility is one of the largest sites that stores low and intermediate level nuclear wastes from reprocessing with more than 30 million cubic meters stored via deep-well injection.