Some considerations on the challenges related to the use of the new ICNIRP restrictions for human exposure to radiofrequency fields

Abstract

Overview

The 2020 ICNIRP guidelines for limiting exposure to radiofrequency fields have replaced the 1998 ICNIRP guidelines for limiting exposure to time-varying electric, magnetic, and electromagnetic fields. This includes a transition from the guidance on low-frequency electromagnetic fields detailed in the 2010 guidelines.

Findings

• Introduction of new exposure metrics such as Specific Absorption Rate (SAR) for both whole-body and localized regions, and absorption power density measures at high frequencies, specifically adjusted values for occupational and general public exposure.
• Consideration of brief local exposure to intense radiofrequency fields for the first time, with restrictions set for local specific absorption and absorbed energy density.
• Inclusion of provisions to protect against nerve stimulation effects, aligning with previous guidelines for low-frequency fields.

Conclusion

The ICNIRP 2020 guidelines offer a more comprehensive framework that accommodates a variety of exposure scenarios. However, the complexity and introduction of new concepts and quantities pose challenges for practitioners in evaluating compliance. The implementation of these guidelines involves training and guidance in measurement and compliance evaluation procedures, emphasizing the need for technically equipped personnel and standardizing measurement methodologies.