LEV Design

On-Torch Welding Fume Extraction – Video Clips

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 …

Wake Effect – Partial Enclosures

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 …

Video – “What Happens When a Centrifugal Fan Runs in Reverse”?

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 …

Poultry House Ventilation

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 …

Emission and Exposure Control-Related Ventilation Regulations – USA

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 …

NERC Guidance for Fume Cupboards

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 Guide B2: Ventilation & Ductwork

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 …

CoSHH Essentials – Easy Steps to Control Chemicals

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 …

LEV Hoods – Am I Required to Fit Hood Indicators & Gauges?

OXYL8 have recently produced a paper which considers whether there is a need in law for hood indicators/gauges.  We know that HSE asks for these to be fitted but they also indicate in their LEV FAQ pages that there is …

HSE Guide MR5 “SMART spraying with two-pack (2K) products”

This HSE Guide/Information sheet will help employers, the selfemployed and franchisees to comply with the Control of Substances Hazardous to Health Regulations 2002 (CoSHH), as amended, to control exposure to Isocyanates and protect workers’ health. This sheet describes good practice …