LEV Installation & Management

An LEV Checklist for Employers

The information in this resource has been taken from the Health and Safety Executive (HSE) publication, ‘Clearing the air: A simple guide to buying and using Local Exhaust Ventilation (LEV)’. The information is aimed at employers or anyone who installs …

SHAPA ATEX Technical Paper (updated)

SHAPA Practical Guidance for Suppliers and Operators of Solid Handling Equipment for Potentially Explosive Dusts. Taken from the foreword: It is the policy of the SHAPA technical committee to systematically review the technical papers & presentations listed in the “Technical …

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

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”; …

HSE – Welding Fume – Changes in Enforcement

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 …

HSE Guide A9 “Drilling Holes in Asbestos Cement”

This HSE Guidance Sheet A9, published in 2017 describes good practice when you need to drill holes in asbestos cement, bitumen products, floor tiles or other highlybonded materials containing asbestos.  

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

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 …

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

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 …

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

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 P35 – Printing with UV-Curable Inks (Ozone)

A Guide produced by HSE in 2005 which describes good practice for printing using UV-curable inks. It discusses (briefly) that LEV should be used to remove any ozone produced by the process.

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

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 …