EMF MODELLING

Dr Richard Findlay and modelling of electromagnetic fields

Electromagnetic fields occur everywhere in the workplace, but are invisible to the human eye. Magnetic fields are produced by current flowing. Electric fields are created where there is a difference in voltage. The electromagnetic field is characterised by frequency; the lower the frequency, the longer the wavelength and deeper the penetration depth. Employers are now required to ensure that electromagnetic field levels comply with limits set out in the EMF Directive 2013/35/EU / Control of Electromagnetic Field At Work Regulations 2016. Computer modelling of human absorption for the above applications allows the operator, researcher or employer to accurately assess the risks posed by the utilisation of electromagnetic systems and devices.
EMF MODELLING
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ADDRESS EMFcomp Limited Hampden House Monument Park, Chalgrove Oxfordshire OX44 7RW
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COMPLIANCE

A high measured field around equipment does not necessarily mean that workers will suffer adverse health effects. Health effects in the EMF Directive 2013/35/EU are based on internal dose quantities within the body. At low frequencies these are induced electric fields, at high frequencies the dose quantity is often the specific energy absorption rate (SAR). These quantities can only be accurately assessed using appropriate numerical methods and anatomically realistic human computer models. Often measured field values are not in compliance with EMF Directive action levels (ALs). Modelled internal electric fields or SARs can prove an effective route to demonstrating compliance with the less restrictive exposure limit values (ELVs). Richard Findlay was delighted to clarify compliance procedures when co-authoring the Practical Guide to the EMF Directive 2013/35/EU with Public Health England for the European Commission.

RESEARCH

Dr Richard Findlay supports research activities into the biological effects of electromagnetic fields. In a study, it can be important to know the magnitude and distribution of the dose a human or animal receives. At low frequencies, EMFcomp Limited has the ability to model almost any exposure situation and calculate the induced electric fields in a human or mouse model. Similarly, in the radiofrequency range, EMFcomp Limited can model a wide range of high frequency exposure problems. Examples include how posture affects the way in which electromagnetic fields are absorbed, the dependency of SAR on field polarisation and how energy absorption changes depending on the dielectric properties of tissues. Richard has previously both led and supported research projects aimed at advancing the understanding of human exposure to low and high frequency electromagnetic fields.

CHARACTERISATION

Dr Richard Findlay has been involved in the creation of computer models for various electromagnetic devices and investigated effects on workers or members of the public. The results of these simulations are subsequently fed back into the design process to ensure that human exposure is minimised.
EMF MODELLIN G
EMF MODELLING

Dr Richard Findlay and

modelling of electromagnetic

fields

Electromagnetic fields occur everywhere in the workplace, but are invisible to the human eye. Magnetic fields are produced by current flowing. Electric fields are created where there is a difference in voltage. The electromagnetic field is characterised by frequency; the lower the frequency, the longer the wavelength and deeper the penetration depth. Employers are now required to ensure that electromagnetic field levels comply with limits set out in the EMF Directive 2013/35/EU / Control of Electromagnetic Field At Work Regulations 2016. Computer modelling of human absorption for the above applications allows the operator, researcher or employer to accurately assess the risks posed by the utilisation of electromagnetic systems and devices.
DR RICHARD FINDLAY
DR RICHARD FINDLAY