The competent person that assembles the various components of an LEV system on site. They may balance the airflow through the system if there is more than one LEV hood and commission it
Health and Safety Executive (HSE), Glossary of Terms: Local Exhaust Ventilation, HSE, Merseyside, England, UK 2012. www.hse.gov.uk/lev/glossary.htm, (Hlth and Sfty - Brit) {704}