As part of the extensive modernization project of the INA - Oil Refinery in Rijeka and adaptation of its operation to environmental protection requirements, in 2009 a complete renovation of the K12 and K13 collectors was carried out in full profile and complete length, including inspection shafts, and in addition, the renovation of pipelines using the CIPP method (rehabilitation gravity and pressure pipelines without excavation, by inserting resin-impregnated and saturated liners into the pipeline and by recirculating hot steam or water, the existing pipe walls are coated with polymers).