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“ Occupational Exposure to EMFs - paving the way for a future EU Initiative ” How to Work Safely with EMFs: The Welding

“ Occupational Exposure to EMFs - paving the way for a future EU Initiative ” How to Work Safely with EMFs: The Welding Sector. J Arwel Barrett HM Principal Specialist Inspector HSE Radiation Team Corporate Specialist Division arwel.barrett@hse.gsi.gov.uk.

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“ Occupational Exposure to EMFs - paving the way for a future EU Initiative ” How to Work Safely with EMFs: The Welding

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  1. “Occupational Exposure to EMFs - paving the way for a future EU Initiative” How to Work Safely with EMFs: The Welding Sector J Arwel Barrett HM Principal Specialist Inspector HSE Radiation Team Corporate Specialist Division arwel.barrett@hse.gsi.gov.uk Aula Nordica, Umeå University, 6-8 October 2009

  2. Part of the Electromagnetic Spectrum RF Heater/sealers welders

  3. Overview • Welding processes • Research • Conclusions • Future needs?

  4. MIG Welding Manual metal arc welding (MMA)

  5. HSE Research Report 338, 2005

  6. HSE Research Report 338, 2005

  7. Resistance (spot) welding

  8. Resistance (spot) welding

  9. RF Welding

  10. RF Welding

  11. RF Welding

  12. ILO Occupational Safety & Health Series 71. Detail of design for a sliding door to prevent stray EMFs

  13. Conclusions • Arc welding – with a little care, the exposures of most welders will not be significant; … • Resistance welding – procedures where welders experience magnetophosphenes should be avoided; … • RF welding – modern enclosed systems appear to control exposures; older C-frame units have more problems assessing exposures and hence controlling duty cycle; …

  14. Future needs • Arc welding – What effect will proposed ICNIRP changes mean for assessments? Information, instruction and training; … • Resistance welding – Where are higher fields – electrodes, or transformers? I, I & T; … • RF welding – Screening continuity; distance; duty cycle; measurement protocols for assessment models; I, I & T; …

  15. MIG Welding Manual metal arc welding (MMA)

  16. Any Questions?

  17. “I’m from the Government – I’m here to help you” J Arwel Barrett, TD HM Principal Specialist Inspector Tel: +44(0)151 951 4819 Fax: +44(0)151 951 4845 arwel.barrett@hse.gsi.gov.uk

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