This Part of EN 1915 specifies the conditions to be taken into consideration when calculating the strength and the stability of GSE according to EN 1915-1 and the EN 12312 series under intended use conditions. It also specifies general test methods. NOTE The methods given in this standard demonstrate one way of achieving an acceptable safety level. Methods that produce comparable results may be used. This Part of EN 1915 does not establish additional requirements for the following: operation elsewhere than in an airport environment; operation in severe conditions, e. g. ambient temperature below -20 °C or over 50 °C, tropical or saturated salty atmospheric environment; hazards caused by wind velocity in excess of the figures given in this European Standard; earthquake, flood, landslide, lightning and more generally any natural catastrophe. This Part of EN 1915 is not applicable to GSE which are manufactured before the date of publication by CEN of this Standard.