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 …
On Tool extraction is gaining traction and these two video clips show how effective small LVHV units can be in controlling dusts from some operations.
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 (and even now beginning …
The Wake Effect is well known and indeed it is covered at some length in HSE’s Guidance Note HSG258 (Controlling Airborne Contaminants in the Workplace. Have just come across this published research paper from 1994 which considers the Wake Effect …
Latest OXYL8 LEV training video on YouTube which shows what happens when a Centrifugal fan is incorrectly wired (ie phases the wrong way round) – a situation which is all too common (estimated that approx 7% are incorrectly wired). The …
Came across this interesting article on the subject of Poultry House Ventilation. Great resource for anyone involved with chicken and other poultry accommodation ventilation. Very topical in early 2017 with the Bird Flu housing requirements for all domestic birds/poultry. Download …
This neat summary document, produced in 2015 by the well-respected Industrial Ventilation specialist Dr Jeff Burton summarises the USA standards and requirements for Ventilation systems used to control personal exposures. A copy of this short document can be downloaded here:- 10-USA …
This interesting guide produced by NERC in 2007 refers to the new EN 14175 which replaces BS 7258 and further refers to NERC containment values which are more stringent than those in the EN. It is intended to support the NERC …
CIBSE have published (in 2016) a series of Guides in their “B” Series of which “B2” is of direct interest to those dealing in Industrial Ventilation/LEV. Section 2.2 sets out the criteria for the design of ventilation systems, covering the …
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 …
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