Wednesday, 25 March 2026
10:00 - 11:15 CET (Vienna time) 

Recording → 

Jointly organized with the United Nations Scientific Committee on the Effects of Atomic Radiation (UNSCEAR)

Presenters: Sayoko Hasui (Nuclear Regulation Authority, Japan) and Peter Hofvander (Swedish Radiation Safety Authority)

This webinar will provide an overview of how the IAEA Safety Standards — Radiation Protection and Safety of Radiation Sources: International Basic Safety Standards, 2014 (GSR Part 3) and Occupational Radiation Protection, 2018 (GSG-7) — address exposure of aircrew due to cosmic radiation. 

It will explain how much exposure there is, why it is considered an existing exposure situation, and how an appropriate reference level is typically set. When the assessment of the occupational exposure is necessary, a framework for radiation protection that applies to individuals is required including dose recording. 

The session will present key findings of UNSCEAR’s evaluation of occupational exposure to ionizing radiation for cosmic ray exposure of aircrew (UNSCEAR 2020/2021 Report Volume IV Annex D), share IAEA Member States’ experiences on coordination among competent authorities as well as radiation protection approaches for aircrew, followed by a Q&A. Exposures of frequent flyers, couriers and individuals involved in space activities fall outside the scope of this webinar.

The webinar is designed for staff of regulatory bodies and assigned authorities, radiation protection officers, qualified experts and other professionals involved in the dose assessment of exposure of aircrew due to cosmic radiation.

• Develop a clear understanding of when and how to apply the requirements of GSR Part 3 for managing aircrew exposure to cosmic radiation, together with the guidance provided in GSG-7.
• Evaluate existing exposure situations related to cosmic radiation in accordance with the IAEA Safety Standards (GSR Part 3), with emphasis on Requirement 52: Exposure in Workplaces.
• Clarify appropriate use of reference levels and the criteria for dose recording as specified in the IAEA Safety Guide on Occupational Radiation Protection (GSG-7).
• Gain insight into the roles and responsibilities of the regulatory body, designated authorities and aircraft operators in ensuring aircrew radiation protection.
• Apply GSR Part 3 and guidance from GSG-7 to develop a methodology to assess and mitigate exposures in a consistent, transparent and justified manner.
• Enhance understanding how Member States make decisions and develop guidelines regarding aircrew in alignment with international radiation safety standards.

Note: Participants are strongly encouraged to submit questions in advance by 13 March 2026 by email. This will allow the experts to select and review the questions beforehand and address them more effectively during the Q&A.

• Sayoko Hasui, Section Chief, Radiation Protection Policy Planning Division of the Japanese Nuclear Regulation Authority.
   
• Peter Hofvander Senior Adviser, Swedish Radiation Safety Authority.