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WHAT IS EN 397? Industrial helmets

This standard applies to protective helmets for industry where the helmets is intend to protect a static user from the predominantly falling hazard.
A series of impact test must be carried out using a fixed head-form and a falling weight in order for a helmet to meet this standard.

The Helmet must not allowe more than 5Kn of energy to spread to the head after a fall of a 5kg weight from a 1 meter height. This test is performed at room temperatures of both +50C and -10C.


The tip of the test mass used (3kg from 1m height) must not come into contact with the skull. This test is also perormed at a room temperature of +50C and -10C.


The helmet is exposed to a flame and it must not burn with flame emission more than 5 seconds after removal of the flame source.


Helmets can only protect when retained on the head. EN 397 requires that either the helmet shell or the headbands is fitted with a chinstrap or with the means of attaching one, i.e. anchorage points.

 Check Your dates
In accordance with EN397, the shelf life of helmets is five years after the date of manufacture. This date is embedded in the format of month/quarter and year on the crown of the helmet.


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