EN 812:2012 Industrial crash helmets

Test method: Use a 5kg flat hammer to drop onto the helmet from a height of 250mm.

Maximum allowable transfer force: The maximum allowable transfer force is 15 kN.

Test area: The impacts are carried out on the front and back of the helmet, with the head tilted at 30° and 60°, to simulate any impact that may occur in actual use.

Sample pre-treatment: Testing was conducted on several helmet samples, which were subjected to high-temperature, low-temperature, water immersion and UV aging pre-treatments. There is also the option to extend the pretreatment temperature range if requested by the manufacturer.

Test method: Use a 500g conical striker and drop it onto the helmet from a height of 500mm.

Evaluation Criteria: Evaluation is based on whether the firing pin makes contact with the headform underneath the helmet. This can be accomplished using an indicator material (such as plasticine or soft metal) on the headform itself, or by establishing electrical contact between the firing pin and the headform (if the firing pin touches the headform, the circuit is complete, and an alarm is sounded).

Sample pre-treatment: Again, testing was conducted on helmets that had been subjected to high temperature, low temperature, water immersion and UV aging.

Coverage area: Most specifications for protective helmets include, in addition to specific performance requirements, some requirements for the helmet design, such as the coverage area provided by the helmet, which needs to ensure that a sufficient area is effectively protected.

Field of view: The field of view provided to the user when worn should also meet the requirements.

Ergonomics and safety: The gap between the helmet and the head, wearing comfort, and other safety-based requirements also need to be met.