Assessment of Personal Occupational Exposure to RF EMF in Libraries and Media Libraries, Using Calibrated On-Body Exposimeters

Abstract

Overview

The study investigates occupational exposure to radiofrequency electromagnetic fields in libraries and media libraries, contexts where Wifi networks have raised safety concerns. Complaints of somatic disorders prompted the research into real-life conditions for library employees.

Methods

• Dynamic exposure measurements done across 20 radiofrequency bands, from 88 to 5850 MHz.
• Analyzed the activity and exposure of 28 library workers over 28 working days using time-space budgeting.
• Exposure sources identified and the workplace mapped with static measurements.

Findings

• Total of 78,858 samples in seven libraries showed median total field of 0.071 V/m with Wifi median fields at 0.005 V/m.
• Peaks in exposure were linked to walkie-talkie use among security staff and varied by geographic location.
• Overall exposure levels are similar to general population but much lower than general occupational exposure limits, especially concerning Wifi frequencies.

Conclusion

The study concludes that occupational exposure to RF EMF in libraries is comparable to general population levels and significantly lower than occupational limits. The use of walkie-talkies by security staff was identified as a source of highest exposure peaks. The unique methodology adopted for evaluating such exposure could be applied to other occupational settings, necessitating due to the concern about potential health risks of EMF exposure despite current legislation.

Impact: This new investigative approach shows potential for broader application, addressing ongoing concerns about EMF exposure in different sectors.