This European Standard specifies the minimum requirements for technical rescue helmets. These helmets are intended to protect the upper head mainly against the effects of mechanical hazards such as impact and penetration, flame, electrical and chemical hazards while conducting technical rescue and associated activities. Technical rescues involve the environments and conditions associated with operational scenarios such as but not limited to those found during road traffic collisions, railway incidents and when working in and around collapsed structures, often for extended periods of time, after natural disasters (flood, earthquake, etc.). Requirements for marking and information to be supplied by the manufacturer are included. Helmets for use while firefighting in buildings and other structures or in wildland firefighting environments, are not covered by this European Standard see EN443 and EN16471 . Helmets for use in water rescue operations using craft, such as boats, canoes etc., are also not covered by this European Standard. Protection of the face and eyes, when not provided by visors, ears and neck might require additional items of personal protective equipment (PPE), which are not covered by this European Standard.