LEV Examination & Testing (Commissioning)

LVHV On-Tool Resources

Several useful resources for anyone engaged in CoSHH Reg 9 testing of LVHV/On-Tool extraction systems. First is a summary of expectations (based on HSE guidance) and practice notes for testing LVHV (in Word format):- LVHV Testing Background and Notes Second …

Welding LVHV Hood – Test Piece/Adaptor

Now available – a dedicated adaptable test kit containing three stainless steel tubes (different diameters) to attach to MIG LVHV welding hoods. The tube attachment permits Flowrates and hood entry Static Pressure to be measured using a Pitot tube/manometer (not …

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 …

HSE Update: Welding Fume

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 …

HSE Explanation of Special Lighting Set-up to Show Invisible Paint Mist

This HSE slide show explains the importance of Tyndall lamp assessments in a spray paint application.  A Tyndall lamp uses the sunlight effect to illuminate invisible particles that you cannot see under normal circumstances. The tyndall assessment is an important …

HSG258; Controlling Airborne Contaminants at Work; A Guide to Local Exhaust Ventilation (LEV)

Controlling airborne contaminants at work; A guide to local exhaust ventilation (LEV) Third Edition, Published by HSE 2017 This is HSE’s current guide on LEV and related topics.  Here you will find recommended Duct Velocities, Captor Velocities, Face Velocities, and …

HSE RR1126 – In-Cab Air Filtration in Plant Vehicles to Control Exposure to Hazardous Dust

This Research Report (RR1126) by HSE, published in 2018 looked at the factors that influence the effectiveness of in-cab air filtration systems throughout their operational lifecycle, including system design, in-service use, and maintenance. The research included developing a new scientific …

HSE RR1146 – “Measuring & Controlling Emissions from Polymer Filament Desktop 3D Printers”

HSE Research Report RR1146 published 2019 which sets out to measure emissions of particulates and volatile organic compounds from desktop 3D printers and to investigate the effectiveness of control measures to reduce these printer emissions. The research found that the …

Measurement of Capture Efficiency of On-Gun Extraction for Welding (LVHV)

HSE sponsored Research Report RR1010 (2014) undertaken by HSL. Key Messages from this Report:- Two test methods for measuring the efficiency of integral on-gun welding fume extraction systems have been devised and assessed. As a result, Method 1 has been …

ACGIH Industrial Ventilation Manual of Recommended Practice for DESIGN: 31st Edition

Now in its 31st 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”. …