LEV Central

The Knowledge Base for LEV

CoSHH Essentials: Control banding

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CoSHH Essentials: Controlling exposure to chemicals – a simple control banding approach Occupational hygienists and others colleagues use this CoSHH essentials control banding approach to identify suitable options for mitigating risks from substances hazardous to health. This approach is particularly useful where workplaces may hold a large variety of different hazardous substances.  The aim is…


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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…

CoSHH Essentials – Easy Steps to Control Chemicals

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HSE Guide (looks like published Sept 2009) dealing with the foundations and “Technical Basis for the CoSHH Essentials: Easy Steps to Control Chemicals”. If you are familiar with Benchmarking (as per HSG258) then this document will provide you with so much more information on the fundamentals and will also allow you to consider more difficult…

HSE CoSHH Welding Guidance Leaflets

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Welding Fume

HSE’s CoSHH Essentials section on Welding Fume has a list of 23 topic Guidance Notes – all of which can be accessed by following the URL link below. Some of the Ventilation-specific guidance notes are listed below for direct download:- WL0 “Advice for Managers” WL0 WL1 “Workshop Ventilation”  WL1 WL2 “Fixed Ventilation”  WL2 WL3 “Fixed…

HSE Prevention of dust explosions in the food industry

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1. Introduction 1.1 Explosions and fires within the food industry from combustible materials are a known hazard and they can have devastating and irreversible effects. This information sheet concentrates solely on the fire and explosion hazards encountered in the food industries from dusty and powdered substances. 1.2 General guidance on the prevention of fires and…

ACGIH Manual of Recommended Practice for DESIGN: NEW 29th Edition!!

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NEW EDITION! NOW AVAILABLE! Now in its 29th Edition, the Manual will include even more information on combustible dusts, nano-particles, new air control techniques and fan design information, more example problems, and more suggestions for hood designs. Since its first edition in 1951, Industrial Ventilation: A Manual of Recommended Practice has been used by engineers, regulators…

Plant Engineer Magazine LEV Article

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Plant Engineer is a magazine by Findlay Media on behalf of the IPlantE and BES professional sectors of SOE (Society of Operations Engineers).  It is provided to all members of the SOE who are members of IPlantE & BES free of charge.  You can also sign up for PDF versions. Mark Venables recently ran an article…