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

slide3

Part of the Electromagnetic Spectrum

RF Heater/sealers

welders

overview
Overview
  • Welding processes
  • Research
  • Conclusions
  • Future needs?
slide5

MIG Welding

Manual metal arc welding

(MMA)

slide14

ILO Occupational Safety

& Health Series 71.

Detail of design for a sliding

door to prevent stray EMFs

conclusions
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; …
future needs
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; …
slide18

MIG Welding

Manual metal arc welding

(MMA)

i m from the government i m here to help you
“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