They concerned odour nuisance and were resolved in accordance with systematic internal procedures.
Information on the complaints was submitted to the relevant administration authorities. Most of the complaints were registered when production units were shut down for maintenance work and preparation for process start-ups, which involved emptying and blowing apparatuses, as well as steam cleaning of individual systems containing mixtures of hydrocarbons. As part of the complaint resolution process, measurements were taken with portable devices at the location of the reported nuisance, and the relevant unit’s operation was checked for potential causes of odour nuisance in the production, repair and maintenance processes. Such action was not taken in the case of two complaints, as it was decided, based on the wind direction and large distance, that the nuisance could not originate from PKN ORLEN’s facilities. In the case of two further complaints, the sources of nuisance were identified outside the plant – the cause was burning leaves and work on sewer manholes in the town.