Controlling airborne contaminants at work

A guide to local exhaust ventilation (LEV).

This book provides guidance on the supply of new LEV equipment. It describes the principles and good practice of deciding on, designing, commissioning and testing cost-effective local exhaust ventilation. The guidance is written for the suppliers of LEV goods and services. It will be helpful for employers and managers in medium sized businesses and trade union and employee safety representatives.

The book contains information about: the roles and legal responsibilities of suppliers, and of their clients as employers; competence; principles of good design practice for effective LEV hoods and their classification; ducts, air movers, air cleaners; and system documentation – with checking and maintenance schedules, and the marking of defective equipment.

It also offers guidance on the specification of LEV; supplier’s quotation; commissioning; zone marking; user manual; logbook; and testing and hood labels.