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The Knowledge Base for LEV

HSE Update: Welding fume

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Earlier in 2019, the HSE released their bulletin announcing that Mild Steel welding fumes was now classed as carcinogen.  This put Mild steel welding into the same category as Stainless and Galv welding (just to name a few examples). The announcement didn’t come with any clear advice on control.  The HSE have reacted to criticism…

HSE Explanation of special lighting set up to show invisible paint mist

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This HSE slide show explains the importance of Tyndall lamp assessments in a spray paint application.  A Tyndall lamp uses the sunlight effect to illuminate invisible particles that you cannot see under normal circumstances. The tyndall assessment is an important element of an LEV Through Examination and Test.  The usefulness of a Tyndall lamp is…

Breathe Freely_Welding Fume Control Selector Tool

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An online Welding Fume Control Selector Tool In light of the HSE’s bulletin announcing Mild Steel welding as a carcinogen, Breathe Freely have supplied this web-tool.  It is designed to complement the information on the Breathe Freely in Manufacturing webpages. It provides guidance on welding fume control for common welding tasks. A panel of experts…

HSG258; Controlling airborne contaminants at work; A guide to local exhaust ventilation (LEV)

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Controlling airborne contaminants at work; A guide to local exhaust ventilation (LEV) Third Edition, Published by HSE 2017 This is HSE’s current guide on LEV and related topics.  Here you will find recommended Duct Velocities, Captor Velocities, Face Velocities, and other design criteria. The various types of hoods, filters, fans and discharges are all described….

HSE RR1126 – In-Cab Air Filtration in Plant Vehicles to Control Exposure to Hazardous Dust

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This Research Report (RR1126) by HSE, published in 2018 looked at the factors that influence the effectiveness of in-cab air filtration systems throughout their operational lifecycle, including system design, in-service use, and maintenance. The research included developing a new scientific method to evaluate filtration system efficiency whilst a vehicle is being driven. The research found:…

BS EN ISO 10882-2: 2000 Welding – Sampling Gases in the Breathing Zone

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BS EN ISO 10882-1: 2000 specifies a sampling method for welding gases generated by welding-related operations for the purpose of making personal exposure measurements in the operator’s breathing zone. It is intended to be of benefit to: agencies concerned with health and safety at work, industrial hygienists and other public health professionals, industrial users of…

BS EN ISO 10882-1:2011 Welding – Sampling Particulates in the Breathing Zone

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BS EN ISO 10882-1: 2011 specifies a sampling method for welding fume and airborne particles generated by welding-related operations for the purpose of making personal exposure measurements in the operator’s breathing zone. It is intended to be of benefit to: agencies concerned with health and safety at work, industrial hygienists and other public health professionals,…

Measuring & Controlling Emissions from Polymer Filament Desktop 3D Printers

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HSE Research Report RR1146 published 2019 which sets out to measure emissions of particulates and volatile organic compounds from desktop 3D printers and to investigate the effectiveness of control measures to reduce these printer emissions. The research found that the heated filaments emitted large numbers of very small particles and volatile organic chemicals which could…

Measurement of Capture Efficiency of On-Gun Extraction for Welding (LVHV)

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HSE sponsored Research Report RR1010 (2014) undertaken by HSL. Key Messages from this Report:- Two test methods for measuring the efficiency of integral on-gun welding fume extraction systems have been devised and assessed. As a result, Method 1 has been selected and is currently being developed by technical committee CEN/TC 121/SC 9/WG 4 (Testing and…

Assessment of Exposure to Chemical Agents in Welding Fume

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HSL Laboratories Research Report from 2000 (2000/15) which set out to re-evaluate the reliability of EH54 methods for assessing exposures to welding fume. The report concluded that while chemical composition of welding fume can be influenced by welding parameters, the variation was relatively small at <20%.  Voltage was the variable parameter which exerted the greatest…