CONTENTS & COMMENT Vol 1 No 1


CONTENTS


Front cover The publishers would like to thank TMD Technologies Ltd, Honeywell Aerospace, Element Materials Technology, TRW and SP for the use of their images on the front cover of EMC Testing.


2 & 3 Product preparation for


certification Product certification specialist, Pete Dorey, explains the extent of the preparations needed before submitting products for EMC testing.


5 Closing the gap on


EMC leakage Enclosure gaskets are available with conductive fabric cladding to provide enhanced protection to electronic systems from RF interference.


6 Magnetic field analysis improves


safety A new magnetometer has been designed to effectively measure static and time variable magnetic fields.


9 EMC Protection at


Sea Rugged electronics enlosure provides physical as well as EMC protection in the punishing environment of sea-going military vessels.


10 Technology events Important dates for your diary.


12 Flexi circuit 3D


printing Conformal sensors, on-circuit antennas and EMC protection barriers are all able to be added to flexible circuits using 3D printing.


15, 16 & 18 Company Guide A guide to EMC testing related suppliers.


20 Students practice


good EMC design Undergraduate students have been taking part in practical exercises in good design practices for EMC protection.


© Concorde Publishing Ltd 2018 Join us online at https://goo.gl/inAElE or scan the QR Code, right Follow us on Twitter @eeonlineorg The source guide for engineers, scientists and technicians


ICNIRP, EMF Directive and UK CEMFAW – what’s the difference?


O


n 29 June 2013, the European Commission repealed Directive 2004/40/EC and published Directive 2013/35/ EU on the minimum health and safety requirements regarding the exposure of workers to the risks arising from physical agents (electromagnetic fields).


The final text of the Directive is largely well balanced and


proportionate, and offers a framework within which Member States, including the UK can continue to protect their workers. Member States were given three years, up to 1 July 2016, to transpose the Directive. In essence, the Control of Electromagnetic Fields at Work (CEMFAW)


Regulations 2016 are the transposition into UK law of EU Directive 2013/35/EU and the effect is to introduce, for the first time, mandatory limits on workers’ exposure to EMF while they are engaged in their professional duties. The regulations do not cover the general public. While there have been suggestions of possible long-term health


effects from exposure to EMF, this area is specifically excluded from the regulations as there is currently no conclusive evidence of any causal relationship. However, the regulations do cover short-term direct biophysical


effects, which are scientifically well established, as well as indirect effects such as interference with cardiac pacemakers. The CEMFAW Regulations require every employer to carry out an EMF risk assessment. In most cases, no further action will be necessary, but wherever an industrial process uses EMF or where equipment operates at high voltage or current levels in excess of 100A, health- and-safety duty holders may need to take additional steps in order to protect workers. For example, significant EMF can be generated in the electricity-supply, railway and healthcare sectors (although MRI scanners are specifically exempted). Broadcast and telecommunications workplaces are other areas where strong fields occur routinely, but here the equipment is usually designed to generate external EMF intentionally, so all major operators are well aware of the issue and have appropriate measures in place. Finally, ICNIRP (the International Commission on Non-Ionizing


Radiation Protection) produce guidelines - these are not legally binding, whereas the EMF Directive or CEMFAW Regulations are legislation.


Before you ask, none of this is likely to change post Brexit. Andy Pye, Editor Reference: http://www.hse.gov.uk/radiation/nonionising/directive.htm


Concorde Publishing Ltd 100 Borough High Street, London SE1 1LB, UK Tel: +44 (0)20 7863 3079 Email: EMCtesting@concordepublishing.com Web: www.EnvironmentalEngineering.org.uk


EMC Testing 2018


Vol 1 No. 1 /// 1


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