HD 478.3.4 S1:1989

Classification of environmental conditions - Part 3: Classification of groups of environmental parameters and their severities - Stationary use at non-weatherprotected locations HD 478.3.4 S1:1989

Scope

This part of the standard classifies groups of environmental parameters and their severities to which products are subjected when mounted for stationary use at locations which are non-weatherprotected - Locations which are non-weatherprotected where products may be mounted for stationary use permanently or temporarily include land-based and offshore locations - Use in and on vehicles is excepted - The environmental conditions specified in this standard are limited to those which may directly affect the performance of products - Only environmental conditions as such are considered - No special description of the effects of these conditions on the products is given - Environmental conditions directly related to fire or explosion hazards and conditions related to ionizing radiation are excluded - Any other unforeseen incidents are also excluded - The possibility of their occurence should be taken into account in special cases - Microclimate within a product is not included - Conditions of stationary use at weatherprotected locations portable and non-stationary use in vehicles and ships and conditions of storage and transportation are given in other parts of the standard