LEV Design

HSA Ireland – Local Exhaust Ventilation (LEV) Guidance

This document – available as a free pdf download is the equivalent in Ireland of HSG258 in the UK. The guidance was published by the Health and Safety Authority in Ireland and mirrors for the most part the format and content of …

MDHS 82/2 The Dust Lamp

HSE guide on the use of the Dust Lamp.  Great tool as the images on this guidance note show. MDHS 82/2 Dust Lamp The Dust Lamp will show all dust but it is particularly impressive when it comes to the …

Fletchers Nomogram – Chart

For Captor Hoods – Fletcher’s Nomogram chart for manual calculations of Hood Entry Velocity required to achieve a nominated minimum Captor Velocity at a chosen distance out from the hood (Captor Distance). All units must be in metric Select hood …

Moody Diagram

Useful diagram for estimating the relative duct roughness factor in calculating pressure losses in ducts.   It uses the Reynolds Number (Re) a dimensionless number which is obtained from where  is the density of the air at temp and pressures …

WIS23 – Wood Dust, Controlling the Risk.

This information sheet is aimed at local exhaust ventilation (LEV) users within the woodworking industry. It provides practical guidance on the health and safety risks from wood dust and how to control them. It will also help employers to ask …

G406 – New and existing engineering control systems.

Engineering controls range from small, on-gun solder fume collectors, through dust hoods, fume cupboards, glove boxes and spray booths, to large-scale industrial installations. All have the same hygiene requirements: to collect or contain the contaminant; to conduct it away from the …

L138 – Dangerous substances and explosive atmospheres.

This Approved Code of Practice (ACOP) and guidance provide practical advice on how to comply with the Dangerous Substances and Explosive Atmospheres Regulations 2002 (DSEAR). These Regulations require the elimination or reduction of risk of fire and explosion from substances …

Explosive Atmospheres – Classification of Hazardous areas (zoning) and selection of equipment.

Gases, vapours, mists and dusts can all form explosive atmospheres with air. Hazardous area classification is used to identify places where, because of the potential for an explosive atmosphere, special precautions over sources of ignition are needed to prevent fires …