Office for Nuclear Regulation

Withdrawals for 2022 (from 1 January 2022 to 31 December 2022)

Information on withdrawals of nuclear material from safeguards in accordance with INFCIRC/570 made in 2022 are shown in the table below.  The withdrawals involved material used as radiological shielding or small quantities of material for use in instrument calibration or radiation detectors, or for research and development.

Table: Summary of withdrawals from safeguards (1 January 2022 to 31 December 2022)

Withdrawals (by type of nuclear material involved) Reason for withdrawal
One notification involving plutonium (Pu) 43.85g. One notification involving plutonium (Pu) ug quantities.
One notification involving thorium (Th) ug quantities.
Three notifications involving plutonium and/or natural uranium, and/or thorium and/or depleted uranium total mg quantities.
This material was withdrawn for use in analysis (e.g., as samples, standards/tracers and/or in instrument calibration) or for research and development.
No notifications of enriched uranium.    
Twenty-four notifications involving depleted uranium (DU), total 454.3kg, The withdrawals of depleted uranium were materials incorporated in shielding containers*


*The withdrawals for depleted uranium shielded containers were for temporary withdrawals, the containers being used during the replacement of spent radioactive sources at UK defence establishments.