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LEV Central

The Knowledge Base for LEV

HSE MDHS95/3 “Measurement of Personal Exposure to Metal Working Fluids”

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This HSE approved method describes a procedure for the measurement of time-weighted (TWA) average concentrations of water-mix metalworking fluid originating from metalworking machine operations. The method is only suitable when the machine sump fluid (liquid circulating in the machine) contains an element which is unlikely to emanate from a source other than the water or…

HSE INDG365 “Working Safely with Metal Working Fluids”

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This HSE Guidance leaflet aims to help employees who work with metalworking fluids understand the main risks to their health. It contains general advice on the precautions which they and their employers can take to avoid these risks. Full leaflet can be downloaded by clicking on the URL below:-

HSE RR900 “Visualisation & Control of Solder Fume Exposure”

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The full title of this HSE research Report is in fact “Visualisation & Control of Solder Fume Exposure – a Quantitative Assessment of LEV Effectiveness”. Published in 2011 by HSE, the document was prepared by HSL. From the introduction to the Research Report:- “Colophony or Rosin Based Solder Flux Fume is a known cause of…

Measuring Aerosols in Air

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Occasionally there may be a need to measure aerosol particulates in air and there are instruments to do this ….. but they work on two fundamentally different ways.  This article by TSI guides you through the differences and might assist you to select the best option for your application. The article provides a basic understanding…

CLEAPSS Guide G9 – Fume Cupboards in Schools

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Building Bulletin 88 (Fume Cupboards in Schools) has been replaced by a new document G9 Fume Cupboards in schools, published by CLEAPSS. This updated version has new information regarding LEV testing and the replacement of filters. Regarding LEV testing it specifies: • carrying out additional face velocity tests with the sash at 200mm to ensure…

Dust Removal Filters for Combustible Dusts

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Very useful guide, clearly set out and with simple but effective diagrams from the Filtration Group. This information sheet looks at ATEX compliant filters for removing dusts. Click on the URL link below to be able to download a pdf copy:-

P601/P604 LEV Report template

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So you’ve passed the P601 or P604 exam, congratulations! The next step is to submit two LEV Thorough Examination and Test Reports. It can be difficult to know where to begin when it comes to submitting two LEV Thorough Examination and Test.   This template has been developed over the years with experience of mentoring Oxyl8…