STANDARD EN 397

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Impact resistance

• Shock protection : Helmets must be able to withstand the impact of an object falling on the wearer's head.
• Energy absorption : They must be designed to absorb and disperse impact energy to reduce the forces transmitted to the head.

 Puncture resistance

• Puncture Protection : Helmets must be tested for resistance to penetration by sharp objects or splashed materials.

 Design and comfort

• Adjustment and stability : Helmets must be equipped with an adjustable interior suspension system to ensure a secure and comfortable fit.
• Ventilation : They can be designed with ventilation holes to improve the thermal comfort of the wearer.
• Weight : Helmets should be light enough to be worn comfortably for long periods of time.

 Visibility

• 100 degree visibility : Helmets may be equipped with reflective materials or bright colors to improve the wearer's visibility in the workplace.

 Marking and manufacturer information

• CE marking : Helmets complying with EN 397 must bear the CE marking, indicating their compliance with European product safety regulations.
• Manufacturer information : Manufacturers must provide instructions for use and maintenance, as well as information on use limitations and storage conditions.

Testing Methods

Test methods for helmets complying with EN 397 include:

• Shock absorption test : Measurement of the helmet's ability to absorb the energy of an impact.
• Puncture resistance test : Evaluation of the helmet's resistance to penetration by sharp objects.
• Fit and stability test : Verification of the effectiveness of the interior suspension system to keep the helmet in place during an impact.