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David Child actinides lab

ANSTO supports global efforts to verify peaceful uses of nuclear technologies

ANSTO has a role in the global monitoring system on behalf of Australia to ensure non-proliferation of weapons and that nuclear technology is only used for peaceful purposes.

To ensure nuclear technologies are only used for peaceful purposes, the IAEA has a comprehensive system of safeguards, both physical inspection and technical surveillance measures, to monitor and verify that member states are fulfilling their commitments to nuclear non-proliferation.

The IAEA maintains a network of analytical laboratories (NWAL) around the world, which includes ANSTO, in addition to its own specialist facilities, to safeguard against nuclear weapons proliferation. Member states have obligations under comprehensive safeguards agreements, which are continuously monitored.

Samples collected by IAEA inspectors at nuclear facilities are sent to selected laboratories in the network.  ANSTO’s Centre for Accelerator Science in Sydney is one of the laboratories in the network.

Mike Hotchkis Vega
Dr Michael Hotchkis near the Vega accelerator, where samples are analysed for uranium, plutonium and fission products

The Centre for Accelerator Science at ANSTO provides ultra-sensitive analysis of samples on the VEGA accelerator to determine if there is any uranium and plutonium or fission products present that may indicate evidence of a nuclear weapons development program. A specialist team at the IAEA assesses the results.

“We are the only supporting laboratory that offers accelerator mass spectrometry, which has the capacity to do what conventional analytical methods cannot,” explained Dr Michael Hotchkis, who supervises these measurements at the Centre for Accelerator Science with Chemistry Group Leader David Child.

“This effort requires highly specialised and dedicated facilities and staff to maintain a capability at the cutting edge of international best analytical practice”.

The analysis can be performed on soil, sediment, vegetation, water, or surface swipes collected from equipment within monitored facilities.

David Child actinides lab
David Child prepares samples in the actinides lab at ANSTO's Centre for Accelerator Science

The samples are prepared in the Centre’s specialist laboratories to extract actinides, such as plutonium and uranium before they can be analysed.

The facility is also deeply involved in international efforts in partnership with the IAEA to improve analytical practices and detection capabilities for safeguards signatures in the environment, as well as improve air quality for health outcomes.

A new radiation and detection imaging technology CORIS360®developed at ANSTO could be used in monitoring environments to support compliance with non-proliferation.

ANSTO also maintains a nuclear forensics capability to support nuclear security.


Dr Michael Hotchkis

Dr Michael Hotchkis


Nuclear Fuel CycleNuclear Stewardship
FacilitiesCentre for Accelerator Science