Volatile organic compounds (VOCs) have been the subject of wide-ranging European legislation over a number of years. This is because of concerns about ozone which is formed by the photochemically reactive compounds in the presence of nitrogen oxide.

This publication lists methods for the estimation of fugitive emission leak rates (kg/h) and provides a protocol for converting these leak rates into annual estimates of refinery process plant fugitive VOC emissions. The protocol takes into account the impact of potential reductions in average emission rates resulting from LDAR programmes.

Please note, this publication does not provide details of how to set up, calibrate or use the monitoring equipment employed in LDAR surveys.