NPL equipment has been used to measure emissions from refinery waste gas flares (image courtesy of iStockphoto) Helping control air pollution NPL helps develop a new way of regulating refinery gas flares. NPL scientists used their own pioneering technique - DIAL (differential absorption lidar - a highly flexible way of measuring air quality) in a pioneering study by the Texas Commission on Environmental Quality (TCEQ) which enabled development of a new approach to air quality regulation within the oil and gas sector. The Challenge A problem in reducing air pollution from release of volatile organic carbons (VOCs) by petroleum refineries and crude oil stores is the difficulty of measuring the concentration of these gases at the point of release. In 2007, NPL worked with the TCEQ to focus o

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