On this webpage, we honor and celebrate the accomplishments and legacies of our Fellows and Honorary Fellows. Their work serves as a constant reminder of the vital role played by the Australasian Radiation Protection Society in ensuring radiation safety and fostering collaboration within the radiation protection community.

Our Fellows are distinguished members of the Australasian Radiation Protection Society who have exhibited exemplary leadership, expertise, and commitment to the field of radiation protection. Through their remarkable contributions, they have significantly influenced the practice, research, and education surrounding radiation protection in Australasia.

  • Dr. Riaz Akber
  • David Alexander
  • Peter Anothony
  • William Bartolo
  • Dr. Trevor Boal
  • Dr. Brad Cassels
  • Simon Critchley
  • Hefin Griffths
  • Frank Harris
  • Dr. Donald James Higson
  • Dr. Bruce Hocking
  • Assoc. Prof. Tony Hooker
  • Prof. Peter Johnston
  • Dr. Kenneth Joyner
  • Dr. Graham Chesney Mason
  • Dr. Richard O'Brien
  • Dr. Michael Harry Repacholi
  • Brent Rogers
  • Dr. Ronald Rosen

Honorary Fellows

Honorary Fellows hold a special place in the Australasian Radiation Protection Society, as they have been recognized for their outstanding contributions to the field of radiation protection beyond the Australasian region. These esteemed individuals have made significant impacts on a global scale through their exceptional leadership, research, and advocacy.

Andrew Johnston
Honorary Fellowship Awarded: 31/10/2023

Andrew Johnston served as a radiation protection officer with the South Australian Government’s Radiation Protection Branch for over 30 years, from 1979 to mid-2011. His career focused on the regulation of uranium mines, mineral sands mining operations, and environmental radiation issues. Notably, he played a pivotal role in the surveillance and remediation of legacy sites such as Maralinga, Radium Hill uranium mine, and the Port Pirie uranium treatment plant.

During his tenure with the EPA, Andrew Johnston served as the Team Leader of the Mining and Environment Group, overseeing the administration of radiation licenses for significant projects. His work included assessing Environment Impact Assessments, approving radiation management plans, and ensuring compliance with regulatory requirements.

Post-EPA, Andrew Johnston continued his impactful work in radiation protection, contributing to ARPANSA and IAEA documents on various topics. His expertise as a regulator and consultant to uranium and mineral sands mining operations has positioned him as one of Australia’s most qualified experts in the field.

Assoc. Prof. Lee Thomas Collins, AM
Honorary Fellowship Awarded: 31/10/2022

We proudly acknowledge the exemplary career and substantial contributions of Professor Collins to the diverse fields of ionizing and non-ionizing radiations. Professor Collins has left an indelible mark through nearly 100 publications, spanning topics from particle deposition in dogs to ultrasound, radiology, mammography, nuclear medicine, radiotherapy, and radiation protection.

His extensive teaching expertise has earned him several appointments as an Associate Professor in Medical and Medical Radiation departments at Australian universities. Professor Collins's dedication to education has had a far-reaching impact, shaping the next generation of professionals in the field.

Beyond academia, Professor Collins has played a pivotal role in shaping safety standards through his work with Standards Australia. This commitment has extended to international collaborations, where he holds ongoing roles as Chairman and committee member with the International Electrotechnical Committee. His influence is evident in the development of diverse standards, particularly in laser and optical safety.

Professor Collins's global impact is further underscored by his work with the International Atomic Energy Agency (IAEA). Through training and safety initiatives, he has made significant contributions to over 25 overseas visits, benefiting students both in Australia and their home countries.

In recognition of his outstanding contributions, Professor Collins was honored as a Member of the Order of Australia. This prestigious accolade reflects his service to medical physics in Australia, emphasizing his role in developing safety standards, providing crucial training in radiation safety, and active participation in professional organizations.

Today, we celebrate Professor Collins's enduring legacy in radiation sciences, education, and international collaboration. His tireless efforts have advanced safety standards, shaped educational programs, and positively influenced the global landscape of radiation protection.

Assoc. Prof. Richard Campbell Smart
Honorary Fellowship Awarded: 31/10/2022

We proudly recognize the distinguished career and substantial contributions of Professor Smart to the fields of radiation regulation and education. Professor Smart's journey is marked by a commitment to excellence, leadership, and significant impacts both at the state and national levels.

Born and raised in Bristol, England, and educated in Birmingham, Professor Smart attained his undergraduate degree in 1970, followed by a Master’s degree and Ph.D. in 1971 and 1976, respectively.

In 1976, Professor Smart ventured to the colonies, seeking opportunities in Nuclear Medicine. He secured a position at St George Hospital in Kogarah, Sydney, setting the stage for a remarkable career.

Professor Smart played a vital role in radiation regulation, dedicating 18 years to the NSW Radiation Advisory Council at the state level. Nationally, his contributions were substantial as a member of the inaugural Australian Radiation Health and Safety Advisory Council from 1999 to 2008. He also actively participated in drafting numerous medical codes for the Australian Radiation Protection and Nuclear Safety Agency (ARPANSA). Beyond national borders, Professor Smart extended his expertise to Asia through teaching commitments with the International Atomic Energy Agency (IAEA), focusing on medical physics and medical radiation protection.

His impact reached global proportions as a member of the Expert Group for the United Nations Scientific Committee on the Effects of Atomic Radiation (UNSCEAR), contributing to the preparation of the 2020/21 Report on the Evaluation of medical exposure to ionizing radiation. This distinguished role, developed by Professor Smart during his tenure until retirement in 2012, evolved from a primarily Medical Physics focus to a comprehensive position encompassing medical physics and radiation safety across multiple sites in the area.

Today, we celebrate Professor Smart's exceptional legacy in radiation regulation, education, and global collaboration. His tireless efforts have left an indelible mark on the field and have paved the way for future advancements in radiation safety and medical exposure evaluation.

Dr. Andrew Craig McEwan
Honorary Fellowship Awarded: 29/11/2021

We take great pride in acknowledging the illustrious career and significant contributions of Dr. McEwan to the field of radiation protection and dosimetry. His journey is marked by a dedication to scientific excellence, international collaboration, and enduring service.

Dr. McEwan's academic journey began at the University of Canterbury, where he earned his BSc (Hons) in 1963. He furthered his studies, obtaining a PhD in Medical Physics from Cambridge University in 1969. Later, in 1982, he added to his academic accomplishments with a Diploma in Health Administration from Massey University.

For nearly four decades, Dr. McEwan served as a Scientist with the National Radiation Laboratory (NRL), leaving an indelible mark on the institution. Notably, he held the position of NRL Director for an impressive 13 years from 1984. His service extended to numerous roles, including membership on the Radiation Protection Advisory Council (1984–2002) and participation in the South Pacific Scientific Mission to Mururoa Atoll in 1983.

Dr. McEwan's international influence is evident in his studies at various nuclear weapons test sites, contributing to the global understanding of radiation protection and dosimetry. From 1997 to 2004, he served on a standing committee of the International Commission on Radiological Protection, further solidifying his impact on an international scale.

A distinguished Fellow of the Australasian Radiation Protection Society (ARPS), Dr. McEwan served as its president from 2000 to 2002. Additionally, he holds the honor of being a Fellow of the Royal Society of New Zealand, recognizing his outstanding contributions to science and society.

Beyond his scientific pursuits, Dr. McEwan's brilliance extends to his notable book "Nuclear New Zealand," a testament to his ability to communicate complex topics to a broader audience.

Today, we celebrate Dr. McEwan's exceptional career, his leadership in radiation protection, and his enduring commitment to advancing scientific knowledge in New Zealand and beyond.

Dr. Keith Henry Lokan, PSM
Honorary Fellowship Awarded: 29/11/2021

We proudly acknowledge the distinguished career and outstanding contributions of Dr. Keith Lokan to the field of radiation protection. Dr. Lokan's journey is marked by unwavering dedication, significant achievements, and lasting impacts on both national and international levels.

Dr. Lokan's academic journey began at the University of Adelaide, where he graduated in 1955. Subsequently, he earned his Ph.D. in nuclear physics from the Australian National University in 1959. Following early career experiences at Harwell, Melbourne and Adelaide universities, he transitioned into radiation physics. In a pivotal move, he assumed the role of head of an electron linear accelerator facility at the National Research Council of Canada, overseeing Canada's radiation measurement standards.

In 1978, Dr. Lokan returned to Australia, taking the helm as the Director of the Australian Radiation Laboratory (ARL), a precursor to the present Australian Radiation Protection and Nuclear Safety Agency (ARPANSA). Until his retirement in 1998, Dr. Lokan played a crucial role in shaping Australian radiation protection standards and guidance. His leadership extended to the assessment and rehabilitation of former UK nuclear weapons test sites in Australia.

Internationally, Dr. Lokan made significant contributions as a member and one-time chair of UNSCEAR. He actively participated in scientific committees of the World Health Organization (WHO), the International Atomic Energy Agency (IAEA), and the International Commission on Radiological Protection (ICRP), particularly focusing on the remediation of sites contaminated with radioactivity.

Dr. Lokan's commitment to the Australian Radiation Protection Society (ARPS) is evident through his Fellowship, Executive Committee membership, and presidency during the early 1990s. His contributions were further recognized with the award of the Public Service Medal in 1995 for outstanding public service in radiological protection research, development, and practice.

Even in his continued membership with ARPS today, Dr. Lokan's dedication to the field remains steadfast, underscoring his enduring impact on radiation protection.

Prof Pamela Joy Sykes
Honorary Fellowship Awarded: 27/07/2015

We take great pride in recognizing the distinguished career and outstanding contributions of Professor Sykes to the field of radiation protection. Her journey is a testament to her unwavering commitment and invaluable expertise.

Professor Sykes began her academic journey by obtaining a PhD in somatic cell genetics at the University of Adelaide. Her scholarly pursuits led her to the University of Oklahoma, where she engaged in postgraduate work on bacterial gene cloning. Her commitment to advancing scientific knowledge brought her back to Flinders University, where she conducted groundbreaking research on residual disease in childhood leukemia.

A trailblazer in her field, Professor Sykes is a founding Fellow of the Faculty of Science in the Royal College of Pathologists of Australia. This prestigious recognition speaks to her exceptional contributions and standing within the scientific community.

A familiar face at ARPS Annual Meetings, Professor Sykes has been a frequent and valued contributor. Her active participation underscores her dedication to the exchange of knowledge and collaborative efforts within the radiation protection community.

 We celebrate Professor Sykes for her profound contributions to somatic cell genetics, bacterial gene cloning, and her groundbreaking research on childhood leukemia. As a respected Fellow and a cherished member of the radiation protection community, she exemplifies the highest standards of scientific excellence.

Jill Fitch, PSM
Honorary Fellowship Awarded: 20/09/2009

Jill Fitch, a distinguished figure in the field of radiation protection, has left an indelible mark through her exemplary career and outstanding service. We commemorate her enduring contributions.

Jill embarked on her academic journey by completing her BSc at the University of Sydney in 1957, followed by a Masters in Radiation Biology and Radiation Physics at the University of London, UK, in 1963.

In the early stages of her career, Jill devoted 13 years to serving as a medical physicist in hospitals across Australia, the UK, and the USA. Her wealth of experience led her back to Australia in 1977, where she assumed the pivotal role of Senior Health Physicist in the Radiation Control Section of the South Australian Health Commission.

Jill's commitment to professional radiation safety societies was exemplified through her leadership roles. She served as the Chair of the SA Branch of the Australasian College of Physical Scientists and Engineers in Medicine in 1983. Subsequently, she held the position of President of the Australasian Radiation Protection Society (ARPS) from 1984 to 1986. Her international influence was evident as an Executive Council Member of the International Radiation Protection Association from 1988 to 1996.

A significant chapter in Jill's career unfolded during 1984 and 1985 when she served as a Commissioner on the Royal Commission into British Nuclear Tests in Australia. Her efforts in this role played a crucial part in the effective clean-up of radioactive contamination at the Maralinga test sites.

Jill's expertise extended globally, representing South Australia and Australia on various national and international committees. Notable among these were her roles on the Commonwealth’s Radiation Health Committee and Radiation Health and Safety Advisory Council, South Australia’s Radiation Protection Committee, and her involvement with the International Atomic Energy Agency (IAEA). During her tenure with the IAEA, she participated in missions to Malaysia, Brazil, Indonesia, and Thailand, making significant contributions to global radiation protection.

In recognition of her outstanding public service, particularly in the field of radiation protection, Jill Fitch was awarded the Public Service Medal in the Queen’s Birthday Honours in 2003.

Jill retired in February 2004 from the role of Director, Radiation Protection Division, Environment Protection Authority, leaving behind a legacy of excellence and dedication to the advancement of radiation protection.

Raymond Joseph De Groot (1924 - 2010)
Honorary Fellowship Awarded: 29/06/1989

After the war, Ray pursued studies in science at Melbourne University, laying the foundation for a career that would span decades. His early years at the Bureau of Mineral Resources showcased his adaptability and keen awareness of the times, leading him to play a pivotal role in uranium prospecting and radiation safety during the fifties' uranium boom.

In the early ’70s, Ray embarked on what would become his post-retirement career. His years of experience testing radiation treatments on humans culminated in the conviction that these treatments were safe for animals. With this newfound mission, he collaborated with veterinarians across Australia, introducing radiation treatment for animals. Remarkably, he continued this practice until his mid-eighties, leaving an indomitable legacy in veterinary medicine.

Ray's commitment to ARPS was unparalleled. Serving on the Executive Committee, he held the esteemed position of ARPS President from 1982 to 1984. Notably, during his tenure, ARPS successfully secured the bid to host the seventh international congress of IRPA in Sydney in the bicentennial year of 1988. His leadership extended to the role of ARPS Registrar, where he played a crucial part in the society's foundational years.

In recognition of his steadfast service, Ray was nominated as one of the first two Fellows of ARPS and served as the chairman of the Fellowship Panel. Additionally, he was elected as a Life Member, a testament to his enduring commitment to ARPS over many years.

Raymond Joseph De Groot's legacy lives on through his groundbreaking work in radiation safety, his pioneering efforts in veterinary radiation treatment, and his unwavering dedication to ARPS.

James Charles Ezekiel Button ( - 2012)
Honorary Fellowship Awarded: 29/06/1989

Jim's journey in the realm of radiation protection has left an enduring legacy that has significantly shaped the Australian Radiation Protection Society (ARPS) and the broader field. We acknowledge and celebrate his invaluable contributions.

In 1963, Jim emigrated to Australia, marking the beginning of a remarkable chapter in his career. He assumed the position of Head, Health and Safety Division at the Australian Atomic Energy Commission (AAEC), now known as ANSTO.

Jim played a pivotal role in the foundation of ARPS in 1973, holding the distinguished position of the society's first Vice President. His dedication and vision for ARPS became evident when he assumed the role of newsletter editor in May 1976. Under his guidance, the newsletter evolved into a formalized journal by January 1977, reflecting Jim's commitment to fostering the exchange of knowledge within the community.

A transformative moment in ARPS's history was Jim's recommendation that the society should become an affiliate of the International Radiation Protection Association (IRPA). In February 1977, IRPA accepted ARPS as a member society, solidifying its international standing. Jim's leadership continued to flourish as he took on the role of ARPS President in 1977.

Jim's influence extended beyond ARPS, as demonstrated by his role as the scientific secretary of the organizing committee for IRPA7 in 1988, held in Sydney. His efforts, along with the committee, led to the successful collaboration with the International Atomic Energy Agency (IAEA), jointly holding its radiation protection conference with IRPA7.

In recognition of his exceptional service, Jim was honored with the first ARPS honorary membership at the 14th Annual ARPS conference held in Perth in 1989. Another significant milestone in Jim's illustrious career was his involvement in advocating for professional accreditation in Australia. He played a pivotal role in establishing the accreditation working group, which commenced its efforts at the conference in 1990.

Life Member

Life Members of the Australasian Radiation Protection Society (ARPS) hold a distinguished position within the organization, recognizing their exceptional contributions and valuable service to ARPS and the field of radiation protection over a significant period of time. Life membership is bestowed upon individuals who have demonstrated an unwavering commitment to advancing the goals and objectives of ARPS and have made lasting impacts on the profession.

These esteemed individuals have dedicated themselves to promoting excellence, fostering collaboration, and enhancing the practice of radiation protection. Through their extensive knowledge, expertise, and tireless efforts, they have significantly contributed to the development and growth of the society and the broader radiation protection community.

Dr. Donald James Higson
Life Membership Awarded: 22/09/2008

We extend our heartfelt appreciation to Dr. Higson for his remarkable career and lasting contributions to the fields of nuclear safety and engineering. Dr. Higson's journey, born in England, is distinguished by his academic achievements, professional expertise, and dedicated service to the global nuclear community.

Dr. Higson earned his degree and Ph.D. in chemical engineering from Imperial College, London, laying the foundation for a career marked by excellence. In 1964, he joined the Australian Atomic Energy Commission, where he specialized in nuclear reactor safety assessment. His contributions extended internationally as a consultant to the International Atomic Energy Agency (IAEA), where he played a vital role in nuclear safety and safeguards.

A true trailblazer, Dr. Higson founded the ARPS Newsletter in 1995, serving as its dedicated editor. This initiative has been a cornerstone of information exchange within the Australian Radiation Protection Society (ARPS), showcasing his commitment to fostering communication and collaboration.

Dr. Higson's association with ARPS is marked by his distinction as a Fellow and Life Member. His contributions further extend to the Institution of Engineers Australia, where he holds the esteemed title of Fellow and Life Member. Additionally, he serves as the Secretary of the Nuclear Engineering Panel and is a Member of the International Nuclear Energy Academy, embodying his commitment to advancing nuclear engineering on a global scale.

As Dr. Higson reflects on his illustrious career, he now passes the role of ARPS Newsletter editor, a position he has held with dedication since its inception, acknowledging the importance of continuity and passing the torch to the next generation.

Today, we celebrate Dr. Higson's enduring legacy, characterized by his exceptional contributions to nuclear safety, engineering, and knowledge dissemination. His impact resonates within ARPS and the broader international nuclear community.

Dr. Ronald Rosen, OAM
Life Membership Awarded: 23/10/1996

Dr Rosen began his career in Wellington, where he earned a MSc degree in physics from the University of New Zealand. Following four years at the National Radiation Laboratory in Christchurch, he relocated to the University of New South Wales in Sydney, and became its first radiation protection officer. In addition to those duties, he undertook a detailed study of a nuclear reactor safety device, for which he was awarded a PhD degree. Subsequently he was appointed a senior lecturer in the School of Safety Science, where he taught the principles of radiation protection to many students, including attendants at the Australian School of Nuclear Technology.
Dr Rosen played a pivotal role in the 1975 establishment of the Australasian Radiation Protection Society ( ARPS), serving as its founding President. He was  a member of the Executive Committee for several years and convened some national conferences. He became an accredited  Fellow of ARPS. In 1984 he was appointed as the Vice President for Congress Affairs in the International Radiation Protection Association, leading an Australian team in hosting its 7th International Congress in Sydney in 1988. That significant event coincided with the Australian Bicentennial Year and the 60th anniversary of the formation of the  International Commission on Radiological Protection.
During his career, Dr Rosen represented Australian and New Zealand radiation protection interests both domestically and internationally. He served for nine years as a member of the NSW Radiological Advisory Council, and was the Advisor on radiation protection to the Ranger Uranium Environmental Inquiry.  He assisted in the preparation of codes of safe practice and the establishment of  professional competency standards.  His overall  contributions were acknowledged in 1996 when he was bestowed Life Membership of ARPS.  Following his retirement, he continued to take  an interest in ARPS affairs.
In 2012 Dr Rosen was awarded a Medal of the Order of Australia for his service to science, particularly in the field of radiation protection, and to professional organizations.

In Memoriam

This section serves as a tribute to those who have made significant contributions to the field of radiation protection and are no longer with us. It is a way to acknowledge their lasting impact and ensure that their legacies are remembered.

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