Office for Nuclear Regulation

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Withdrawal notifications for 2018 (from 1 January 2018 to 31 December 2018)

Information on advance notifications of withdrawals of nuclear material from safeguards made in 2018 is 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 as analytical tracers or for research and development.

Summary of notifications of withdrawals from safeguards (1 January 2018 to 31 December 2018)

Number of withdrawal notifications (by type of nuclear material involved)1 Reason for withdrawal
Four notification involving plutonium (Pu) only and three other notifications involving plutonium and/or uranium/thorium, total mg quantities This material was withdrawn for use in analysis (e.g. as samples, standards/tracers and/or in instrument calibration)2
Three notifications involving high enriched uranium (HEU), total 1.6g This material was withdrawn for use in radiation detectors2
Twenty five notifications involving depleted uranium (DU), total 516kg and four notifications involving uranium (U) and/or thorium (Th), total g quantities The withdrawals of depleted uranium were materials incorporated in shielding containers3
The g quantities of uranium and/or thorium were withdrawn for use in analysis (e.g. as samples, standards/tracers and/or in instrument calibration)2

Notes

  1. the tabulated information covers advance notifications of withdrawal approved by ONR Safeguards and which resulted in the withdrawal of nuclear material from safeguards.
  2. there are no facilities outside safeguards that have material in such quantities and forms, and defence establishment requirements for these specialist materials have therefore been met by supply from civil organisations.
  3. the advance notifications of withdrawal for depleted uranium shielded containers were for temporary withdrawals, the containers being used during the replacement of spent radioactive sources at UK defence establishments.