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LEV Central

THE Focal Point for the LEV Industry

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.

HSG 258 CONTROLLING AIRBORNE CONTAMINANTS AT WORK – A GUIDE TO LOCAL EXHAUST VENTILATION (LEV) – copy

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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…

On-Torch Welding Fume Extraction – Video Clips

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I’m a convert! Often over the years since leaving HSE I have seen on-tool extraction systems for welding which simply did not live up to their promises. More recently – a new generation of MIG welding torch extraction units have come onto the market from a number of suppliers.  The video clips and links below…