prBAS IEC TS 61400-31:2026

IEC TS 61400-31:2023 establishes a guideline for the assessment of the risks which a wind turbine may pose to the general public. This document aims to facilitate a uniform scope and a uniform use of methods in wind turbine risk assessments. This document covers risk due to internal or external causes, such as technical failures, human errors, extreme wind conditions, turbine icing, lightning strikes, earthquakes, flooding, landslides or fire.This document covers only onshore wind turbines with a horizontal axis and a swept area greater than 200 m2. Substations and other external structures are excluded. This document describes risks during operation of the wind turbine including maintenance, idling and standstill. It does not describe risks during construction, civil works, crane operations, assembly or decommissioning. Risks according to this document are assessed by prescriptive and/or risk-based methods. This document covers risk reduction measures that might be necessary to reduce risk to a tolerable level.