Magnetic Field Assessment William H. Bailey, Ph.D. March 18, 2015 - - PowerPoint PPT Presentation

Magnetic Field Assessment

William H. Bailey, Ph.D. March 18, 2015

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Levels of 60-Hz Magnetic Fields – Various Sources (Savitz et al., 1989)

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Source: Gauger JR. 1985. Household Appliance Magnetic Field Survey. IEEE Transactions on Power Apparatus and Systems. Vol PAS-104, No. 9.

Magnetic Fields from Home Appliances

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EMF from Substations

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IEEE standard 1127-1990 “…electric and magnetic fields attenuate sharply with distance and will often be reduced to a general ambient level at the substation property lines. The exception is where transmission or distribution lines enter the substation.” National Institute of Environmental Health Sciences (2002) “In general, the strongest EMF around the outside of a substation comes from the power lines entering and leaving the substation. The strength

• f the EMF from equipment within the substations, such as

transformers, reactors, and capacitor banks, decreases rapidly with increasing distance. Beyond the substation fence or wall, the EMF produced by the substation equipment is typically indistinguishable from background levels.

• Thousands of studies since late 1970s
• Evaluated by leading agencies worldwide

– 1999 National Institute for Environmental Health Sciences (NIEHS) in United States – 2007 World Health Organization (WHO) – 2010 International Commission on Non- Ionizing Radiation Protection (ICNIRP) – 2015 European Commission - SCENIHR

http://www.niehs.nih.gov/health/assets/docs_f_o/niehs-report.pdf http://www.who.int/peh-emf/publications/Complet_DEC_2007.pdf http://www.icnirp.de/documents/LFgdl.pdf http://ec.europa.eu/health/scientific_committees/emerging/docs/scenihr_o_041.pdf

Reviews of EMF Health Research

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Overall Conclusion of National and International Agencies

The NIEHS, WHO, ICNIRP and SCENIHR did not conclude that EMF is the cause of any disease. “Based on recent in-depth review of the scientific literature, the WHO concluded that current evidence does not confirm the existence of any health consequences from exposure to low level electromagnetic fields.”

World Health Organization “What are electromagnetic fields?” www.who.int/peh-emf/about/WhatisEMF/en/index1.html

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