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Our CEO and Deputy CEO
Dr Carl-Magnus Larsson
Chief Executive Officer
Dr Carl-Magnus Larsson commenced as Chief Executive Officer of ARPANSA in March 2010.
Dr Larsson studied chemistry and biology and subsequently completed his PhD in Botany in 1980. He became Associate Professor in Physiological Botany at Stockholm University (Sweden) 1984.
Following a career in science he took up a position with the Swedish Radiation Protection Authority (SSI) in 1993 to work on environmental aspects of nuclear power. Apart from working for the National Chemicals Inspectorate for a year, Dr Larsson continued to work for SSI as Department Head, Deputy Director General and Director General until SSI and the Swedish Nuclear Power Inspectorate merged in 2008. In the new organisation, the Swedish Radiation Safety Authority, Dr Larsson held positions as Head of the Department of Radiation Protection and the Department of Radioactive Materials.
Dr Larsson coordinated the multinational European Commission-supported research projects FASSET and ERICA (both on environmental assessment and protection) between 2000 and 2007 and he has been a member of the Organisation for Economic Cooperation and Development - Nuclear Energy Agency’s Radioactive Waste Management Committee (RWMC) and the chair of the RWMC-Regulators' Forum. He was the Australian Representative to the United Nations Scientific Committee on the Effects of Atomic Radiation (UNSCEAR) 2010-2016 and was the Chair of the Committee 2012-2015. Dr Larsson was a member of the Commission on Safety Standards of the International Atomic Energy Agency (IAEA) from 2008 to 2019. He has been a member of the International Commission on Radiological Protection (ICRP) since 2005 and a member of ICRP’s Main Commission since 2013. In 2018, he was elected as the Vice-President of the Eighth Review Meeting of the Convention on Nuclear Safety, to be held in 2020.
Dr Gillian Hirth
Deputy Chief Executive Officer
Dr Gillian Hirth is the Chief Radiation Health Scientist and Head, Radiation Health Services (RHS) Branch at ARPANSA. The CEO appointed Dr Hirth as Deputy Chief Executive Officer of ARPANSA in March 2017.
Dr Hirth completed a PhD in environmental radiochemistry in 1999 and from 2000 to 2003 she was a Post-Doctoral Research Fellow at the Australian Nuclear Science and Technology Organisation. Her research focussed on the transport of uranium decay series in the environment and their transfer to biota.
Dr Hirth worked for the Australian Defence Organisation from 2003 to 2010 in the field of hazardous materials and environmental management, this work included the management of radiation sources and facilities, nuclear materials, occupational exposures and radioactive waste. She has been with ARPANSA since 2010. Initially working in codes and standards development, she then led a project examining radionuclide activity concentration ratios in wildlife inhabiting uranium mining environments and was Director of the Monitoring and Emergency Response Section in RHS Branch from March 2014 to August 2016. In August 2016 she was appointed Head of the RHS Branch.
Dr Hirth is the current Australian Representative to the United Nations Scientific Committee on the Effects of Atomic Radiation (UNSCEAR) since the 64th session in 2017, and was appointed as Chair of UNSCEAR for the 66th and 67th sessions in 2019, a role that she will hold until the commencement of the 68th session in 2021.
Dr Hirth was appointed as a member of the Commission on Safety Standards of the International Atomic Energy Agency (IAEA) for the 7th term, 2020 to 2023, and was the Australian representative on the IAEA's Emergency Preparedness and Response Safety Standards Committee for the term 2015-2017. Dr Hirth is member of the International Commission on Radiological Protection Committee 4 for the term 2017–2021, and is a member of the Board of Council of the International Union of Radioecology.