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Session Evaluation

AOHC 2026 Concurrent Sessions

Disaster Preparedness and Emergency Management

412 - Small Reactor, Big Lessons: The Deadliest U.S. Nuclear Accident and Its Legacy in the New Nuclear Renaissance of Small Modular Reactors

Wednesday, April 22, 2026
11:15 AM - 12:15 PM CT
Location: Chicago Ballroom X
Claim 1.0 CME

All relevant financial relationships have been mitigated.


Disclosure(s):

Kristopher D. Minsinger, MD: No financial relationships to disclose
James D. Vogt, NRRPT: No financial relationships to disclose
Session Description: The SL-1 reactor accident remains the deadliest nuclear event in U.S. history—and a powerful case study in occupational risk, human factors, and radiation physiology. This session revisits the 1961 disaster through the lens of modern occupational and environmental medicine, exploring the physiological impact of ionizing radiation, the systemic failures that led to the incident, and the lessons it offers for today’s nuclear renaissance. With the rise of small modular reactors (SMRs), we’ll examine their safety innovations, workforce implications, and the urgent need for continued research, training, and regulatory foresight.

Educational Gaps: Physicians often lack practical knowledge of acute ionizing radiation effects and emergency response protocols, limiting their readiness for rare but high-impact exposures. As small modular reactors (SMRs) expand, clinicians must shift from passive awareness to active preparedness—integrating radiation physiology into occupational risk assessment and response planning.

Is this session being sponsored by an ACOEM Section or Component?: No

Has this session previously been presented?: Not to my knowledge

The AOHC 2026 theme is Healthy workers. Healthy world: This session revisits the SL-1 nuclear accident to explore how human factors—such as unclear procedures and cognitive overload—can lead to catastrophic outcomes. As small modular reactors (SMRs) emerge, these risks evolve, requiring occupational health professionals to shift from passive awareness to active preparedness. The session emphasizes the importance of integrating physical safety, mental resilience, and system-level safeguards into workforce planning and emergency response. By equipping clinicians with the knowledge to recognize and manage acute ionizing radiation exposures, we strengthen the foundation for safer, healthier work environments. This session supports the AOHC theme by promoting a proactive, systems-informed approach to protecting workers in high-risk industries—ensuring that innovation and human well-being advance together.

Learning Objectives:

  • Evaluate the human factors contributing to the SL-1 nuclear accident and interpret how procedural design, training deficiencies, and cognitive workload can influence safety outcomes in high-risk occupational settings.
  • Explain the physiological effects of acute ionizing radiation exposure and apply this understanding to clinical decision-making in occupational health scenarios involving radiation risk.
  • Assess the occupational health implications of small modular reactor (SMR) deployment and recommend strategies for workforce preparedness, emergency response planning, and system-level safeguards that reduce human error.