Earth-moving machinery - Safety - Contamination protective systems

This document is applicable to protective ventilation systems to provide breathing air to operator's stations on earth-moving machinery used in contaminated areas. Its purpose is to limit the exposure of the operator (driver) to hazardous agents when earth-moving machinery is used in contaminated areas. This document describes requirements, test procedures and information to be provided by the manufacturer for protective ventilation systems to provide breathing air to operator's stations on earth-moving machinery used in contaminated areas. This document gives additional requirements to the common safety requirements of EN 474-1 “Earth-moving machinery - Safety - Part 1: General requirements” and to the machine specific parts of the EN 474 series. This document does not repeat the requirements from the EN 474 series but adds or replaces the requirements as applicable for Earth-moving machinery. This document does not cover: - the safety requirement to be used for any specific application; - the relevant filter performance or filter class for any particular application; - the actual cab performance in the field application; - the filtration performance in the field application; - the field durability of filters. This document is not applicable to protective ventilation systems which are manufactured before the date of its publication as an EN.