HSE - Welding Safety Alert

Dale Smith

Dale Smith

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03 Apr 2019

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A safety alert from the Health and Safety Executive has recently been published that has focused on the change in ‘Enforcement Expectations for Mild Steel Welding Fume’

This safety alert is applicable to all workers, employers, self-employed, contractors’ and any others who undertake welding activities, including mild steel, in any industry.

There is new scientific evidence from the International Agency for Research on Cancer that exposure to mild steel welding fume can cause lung cancer and possibly kidney cancer in humans. The Workplace Health Expert Committee has endorsed the reclassification of mild steel welding fume as a human carcinogen.

‘Human Carcinogen’

A Carcinogen is defined as any substance, radionuclide, or radiation that is an agent directly involved in causing cancer. This may be due to the ability to damage the genome or to the disruption of cellular metabolic processes.

What are the key issues?

What the HSE says:

  • There is a change in HSE enforcement expectations in relation to the control of exposure of welding fume, including that from mild steel welding.
  • All businesses undertaking welding activities should ensure effective engineering controls are provided and correctly used to control fume arising from those welding activities.
  • Where engineering controls are not adequate to control all fume exposure, adequate and suitable respiratory protective equipment (RPE) is also required to control risk from the residual fume.

With immediate effect, there is a strengthening of HSE’s enforcement expectation for all welding fume, including mild steel welding; because general ventilation does not achieve the necessary control.

Main Enforcement Expectations

  • Control of the cancer risk will require suitable engineering controls for all welding activities indoors e.g. Local Exhaust Ventilation (LEV). Extraction will also control exposure to manganese, which is present in mild steel welding fume, which can cause neurological effects similar to Parkinson’s disease.
  • Where LEV alone does not adequately control exposure, it should be supplemented by adequate and suitable respiratory protective equipment (RPE) to protect against the residual fume.
  • Appropriate RPE should be provided for welding outdoors. You should ensure welders are suitably instructed and trained in the use of these controls.
  • Regardless of duration, HSE will no longer accept any welding undertaken without any suitable exposure control measures in place, as there is no known level of safe exposure.
  • Risk assessments should reflect the change in the expected control measure

Action required

  • Make sure exposure to any welding fume released is adequately controlled using engineering controls (typically LEV).
  • Make sure suitable controls are provided for all welding activities, irrelevant of duration.  This includes welding outdoors.
  • Where engineering controls alone cannot control exposure, then adequate and suitable RPE should be provided to control risk from any residual fume.
  • Make sure all engineering controls are correctly used, suitably maintained and are subject to thorough examination and test where required.
  • Make sure any RPE is subject to an RPE  programme[1]. An RPE programme encapsulates all the elements of RPE use you need to ensure that your RPE is effective in protecting the wearer.

The full alert from the HSE can be read here

Need guidance on how this alert impacts you?

Then speak to an expert health & safety advisor at Croner on 01455 858 132.

About the Author

Dale Smith

Dale is an experienced Health and Safety Practitioner having started his career in the logistics sector back in 2004.

Dale has been a Health and Safety Consultant for the past 4 years and recently joined Croner as a Senior Consultant.

He has been a Chartered Member of IOSH since 2014 and has completed the NEBOSH National Diploma, IEMA Certificate in Environmental Management, The Management of Pre-Construction Health and Safety (APS), Scaffold Inspection (NASC), CSCS Card (Professionally Qualified Person), Asbestos Awareness (UKATA) and Advanced Fire Risk Assessor (FPA).

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