Russian state nuclear corporation Rosatom has called for bids for decommissioning of Building 4 at the Angarsk Electrolysis Chemical Complex, formerly a key uranium enrichment and conversion facility. The bids are due to April 25. The initial (maximum) contract price was set at RUB1.7bn ($25.8m), according to the government procurement website. The work must be completed by 10 December 2019.
The work will be financed through the federal target programme "Nuclear and Radiation Safety in 2016-2020 and until 2030" (FTP NRS-2) under the project "Decommissioning of Building 2 (Building No. 802) and Building 4 (Building No. 804) at AECC".
The two buildings housed gaseous diffusion uranium enrichment facilities but were shut down in 1987 and 1990 after Russia switched to gas centrifuge technology. Building 804 still has process equipment which has not been dismantled, including 15 large-size units of diffusion machines and inter-unit piping systems, as well as other engineering equipment and scrap metal (fragments of dismantled process equipment).
Decommissioning will involve dismantling and elimination of process systems, equipment, engineering utilities and building structures followed by rehabilitation of the building host territory.