This European Standard describes the requirements for and methods of testing of combined systems with tile and brick layers which are applied to concrete or metallic process engineering equipment that will come in contact with chemical substances (liquids, solids and gases). The requirements specified here may be used for the purposes of quality control (e.g. as agreed between the contract partners or having been given by na-tional regulations1)). The standard applies to systems which serve one or more of the following purposes: - to protect the component from adverse effects of aggressive substances; - to protect waters (e.g. ground water) against hazardous substances; - to protect the charge from becoming contaminated by components released from the substrate material; - to achieve a particular surface quality. The described combined systems can be used for concrete or metallic process engineering equipment that will come into contact with chemical substances. The combined system is a combination of: - a coating according to EN 14879-2 or EN 14879-3 with an additional layer of tiles or bricks embedded in cement mortar, resin based mortar and/or potassium silicate mortar as an adhesive bonding cement (re-ferred to simply as cement in this standard); or - a lining according to EN 14879-4 or EN 14879-5 with an additional layer of tiles or bricks embedded in cement mortar, resin based mortar and/or potassium silicate mortar as an adhesive bonding cement (re-ferred to simply as cement in this standard). For design and preparation of substrate, see EN 14879-1.