LEV Central

THE Focal Point for the LEV Industry

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Building Bulletin 88 (Fume Cupboards in Schools) has been replaced by a new document G9 Fume Cupboards in schools, published by CLEAPSS.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…

Video – “How to Measure Captor Hood Control Distance?”

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Latest OXYL8 LEV training video (Sept 17) on YouTube discusses the ways in which we can approach the verification of the Control Distance of a particular Captor Hood. More usually we use smoke release on the centreline out from the hood face until the first ‘whisp’ of smoke is not controlled.  From there most surveyors…

Video – “Captor Hoods – Basic Principles and Design Theory/Equations”

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Latest OXYL8 LEV training video (Aug 17) on YouTube which provides an introduction to the basic operational principles of Captor Hoods and an outline of the mathematical theory for Captors. Fletchers Nomogram equations are discussed and reference made to an OXYL8 (free to download) Excel spreadsheet which will do all the hard number crunching for…

HSE Guide P40: Wide-Format Printing with UV-Curable Inks (Ozone)

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This HSE Guidance Leaflet, which was published in 2005 describes good practice for digital (ink-jet) printing on machines up to 3.2 metres wide, using UV-curable inks. It advises the use LEV (extraction) for any Ozone produced by the process.

HSE Guide P7: Printing with UV Curable Inks and Coatings

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HSE Guide for Printing Industry, published in 2005 describes good practice for printing with UV-curable inks where the ink-curing lamps generate ozone. It discusses the use of LEV for controlling any ozone produced in the process.