Last reviewed 16 July 2020

The Institute of Local Exhaust Ventilation Engineers (ILEVE), together with the Building Engineering Services Association (BESA), have published new guidance on local exhaust ventilation (LEV), at a time when reducing exposure to airborne contaminants is a topic of increasing interest during the Covid-19 pandemic.

TR40: A Guide to Good Practice for Local Exhaust Ventilation is a comprehensive guide for all those who design, commission, operate and maintain LEV systems, including LEV commissioning engineers.

The guide has been produced to support the ILEVE aims of reducing ill health and deaths resulting from workplace exposure to hazardous substances, as well as improving competence and providing members and the wider public with information and criteria for best practice.

TR40 includes information on the different roles and responsibilities, and associated legal and statutory responsibilities associated with LEV, providing guidance on what to do, and when, to ensure the LEV process provides effective solutions to control exposure to hazardous substances.

It also includes guidance on:

  • identifying LEV competency skills, experience and knowledge

  • training (intended to be used in conjunction with the industry LEV competency matrix)

  • the importance of keeping records

  • what to look for, what to ask when evaluating LEV tenders and quotations

  • the installation and commissioning process through to handover.

Commenting on the guidance, Dean Greer, Chair of ILEVE, said, “TR40 will help give the consistent approach we have all been working towards. The guide is designed to ensure that we have bespoke systems being designed and installed to protect the health of all those in the working environment.”

TR40 is available for CIBSE members to download online and for members of the public to purchase via the BESA website.