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This document covers the general requirements and the basic criteria for lifetime management of all kinds of free-standing chimneys, comprising monitoring, inspection, maintenance, repair, reporting, and necessary actions and procedures. This document applies to any windshield, single stack, tower, mast and liner covered by the EN 13084 series. The Lifetime management considers the original structural and operating design of the structurally independent chimneys under operational conditions and other actions to verify that mechanical resistance and stability and safety in use are continued at the designed for level as expected and/or adapted to changes in the operational requirements of the structure and/or its environment. NOTE In other parts of the EN 13084 series, rules will be given where chimney products in accordance with EN 1443 (and the relating product standards) can be used in structurally independent chimneys.