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LEV Central

The Knowledge Base for LEV

HSE_Asthmagen? Critical assessments of the evidence for agents implicated in occupational asthma

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This HSE document runs through several agent groups and their individual compounds.  It assesses and discusses the evidence, to determine if the substances are Asthmagens based upon the EU Criteria. It is an aged document, first published in 1997 with revisions in 1998 & 2001.  Good reference document for LEV testers and designers.

HSE INDG 346 “Chromium and You”

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This HSE guide on working with Chromium was last updated in 2013. The guide discusses working with chromium and its inorganic compounds and how exposure may affect your health. This leaflet tells you about the possible health effects, the preventative measures your employer needs to apply, and the precautions you should take to protect your health….

OXYL8 Captor Hood Calculation Apps for iPhone and Android

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OXYL8 have developed a free LEV App for Android and iPhones which will (using Fletcher’s Equations) calculate the Hood Entry Velocity required for any shape of Captor Hood. The equations cannot be run backwards eg to determine Captor Distance (trust me several uni maths people have tried! :-)) but by typing in different distances into…

UKLA/HSE Guide “Safe Handling & Disposal of Metal Working Fluids”

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Joint publication by UKLA and HSE  provides guidance about maintaining water-mix MWF to prevent ill health in machine workshops. It is well known that skin disease (dermatitis) and lung disease (occupational asthma and occupational hypersensitivity pneumonitis) can occur in operators, either because their skin is regularly in contact with MWF, or because they inhale MWF…

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…