In the operation ofachemical orpetrochemicalplantthere areseveral possibilities ofoperational and environmentalemergenciesdue tofugitive emissionsare not detectedin the plant.In somecases, theseemergencies cancause irreversible damageto the environmentandequipmentoperation.Thus,this presentationdemonstrates the application ofmass spectrometryin strategicactionsaimed atdetection andfasteridentificationand mitigationoffugitive emissions.