Past Event

Adopting the International System of Units for Radiation Measurements in the United States: A Workshop

September 29, 2016 - September 30, 2016

Location: National Academy of Sciences Building
2101 Constitution Ave NW Washington DC 20418

U.S. Government agencies with radiation protection responsibilities continue to use conventional units for radiation measurements despite 30-year-old national and international recommendations to use SI (System Internationale) units. The use of conventional units hinders information exchanges and communications between the United States and other countries, most of which use SI units, especially during emergencies. For example, U.S. personnel deployed in Japan during the 2011 Fukushima nuclear accident encountered difficulties in communicating with Japanese counterparts and the international radiation protection community.

The Centers for Disease Control and Prevention asked the National Academies of Sciences, Engineering, and Medicine to organize a workshop to discuss how the adoption of SI units for radiation protection in the United States could improve information exchanges and communications. The workshop examined international experiences in transitioning to SI units for radiation protection and discuss possible steps towards adopting the exclusive use of SI units in the United States.

Information about the Workshop:
Statement of Task
Workshop Organizing Committee (PDF)

Workshop Summaries Resulting from this Event

Adopting the International System of Units for Radiation Measurements in the United States: Proceedings of a Workshop (2017)

Most countries in the world use the SI (Système International, also known as the metric system) units for radiation measurements in commercial and technical activities. The United States, in contrast, uses a mix of SI and conventional units for radiation measurements, despite 30-year-old national and international recommendations to exclusively use SI. Radiation professionals in the United States are faced with the need to understand bot... More >>


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Day 1 Presentation

Day 2 Presentation

Ellen Anderson, Nuclear Energy Institute

Armin Ansari, Centers for Disease Control and Prevention

Michael Boyd, Environmental Protection Agency

Frazier Bronson, Canberra Industries

Peter H Burgess, Radiation Metrology Ltd (UK)

Joseph J. Cordes, George Washington University

Col John P. Cuellar, Department of Defense & Lt Col Ricardo A. Reyes, Department of Defense

Nicholas Dainiak, Radiation Emergency Assistance Center/Training Site (REAC/TS)

Sara DeCair, Environmental Protection Agency

Paul M. DeLuca, Jr., University of Wisconsin Medical School Madison, Provost Emeritus (on behalf of the International Commission on Radiation Units & Measurements)

Alan Du Sautoy, Canadian Nuclear Safety Commission

Willie Harris, Exelon Nuclear

Matt Heavner, Office of Science and Technology Policy

Steven H. King, Penn State Hershey Medical Center

Mark L. Maiello, New York City Department of Health and Mental Hygiene

Marc S. Mendonca, Radiation Research (Journal)

Fred A. Mettler Jr., University of New Mexico School of Medicine (Professor Emeritus)

Ronaldo (Ronnie) Minniti, National Institute of Standards and Technology

Stefan Mundigl, European Commission

Stephen V. Musolino, Brookhaven National Laboratory

William C. Ostendorff, Nuclear Regulatory Commission (former Commissioner)

Alexis L. Reed, Counter Terrorism Operations Support

David P. Ropeik, Risk Communication Consultant

Steven L. Simon, National Cancer Institute

Bliss Tracy, Health Canada (retired)

Jessica Wieder, Environmental Protection Agency