LEV Central

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…

ACGIH Manual of Recommended Practice for DESIGN: NEW 30th Edition!!

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NEW 2019 EDITION! NOW AVAILABLE! Now in its 30th Edition Since the 26th Edition, this industry standard LEV Manual has undergone several major changes and upgrades Additions include chapters on – “Organization and Evaluation of Systems”; “Metric Solutions and Tables”; and “Calculation Sheets and Methods”. This (2019) 30th Edition, incorporates changes in many of the…

Welding Fume IARC Monograph 118

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In February 2019 HSE announced that Welding Fume was to be considered a human carcinogen.  This has had a major impact across a wide range of industries and employers. Questions are arising as to what elements of the welding ‘fume’ are implicated and what control responses would be appropriate. This Monograph is the original document…

HSE Work Plan 2019-2020 – Asthmagems, Carcinogens & Respirable Crystalline Silica

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HSE have set our their Work Plan for the coming byears with particular focus on targeting sectors where carcinogens, asthmagens and RCS are regularly used, produced or process generated. They have stated that they will deal with the underlying causes of poor risk control i.e. failures in health and safety management arrangements. These include the…

HSE – Welding Fume – Changes in Enforcement

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In February 2019 HSE released a Press Note which advised of the new health warning status of welding fume.  The main points made were:- New scientific evidence that exposure to all welding fume, including mild steel welding fume, can cause lung cancer. Also limited evidence linked to kidney cancer. Now a change in HSE enforcement…

CoSHH Essentials: Control banding

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CoSHH Essentials: Controlling exposure to chemicals – a simple control banding approach Occupational hygienists and others colleagues use this CoSHH essentials control banding approach to identify suitable options for mitigating risks from substances hazardous to health. This approach is particularly useful where workplaces may hold a large variety of different hazardous substances.  The aim is…


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Second Edition, Published by HSE 2011 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. Sections on Manuals and Log Books, LEV Examination and Testing protocols and…

Am I Required to Fit Hood Indicators & Gauges?

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OXYL8 have recently produced a paper which considers whether there is a need in law for hood indicators/gauges.  We know that HSE asks for these to be fitted but they also indicate in their LEV FAQ pages that there is no direct legal requirement. But how would the Courts view this?  We need to be…

HSW Act 1974 S6 “General Duties of Manufacturers etc as Regards Articles and Substances for Use at Work”

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Extract from Health and Safety at Work etc Act 1974 which spells out the duties and responsibilities of Manufacturers, Designers, Supplies or Imports articles (including LEV) and substances for use at work.  Useful checklist for anyone Buying or Designing, Manufacturing, Supplying any article related to LEV.