ERA-GUI-100.pdf - Europa

Guide for the application of the Art 14 (a) of the Safety Directive and Commission Regulation (EU) No 445/2011
on a system of certification of entities in charge of maintenance for freight wagons – VERSION 1.0
4.8 What does “maintenance” mean?
•restore the vehicle
in its conditions of
use (design
operating state)
MAINTENANCE
DESIGN OPERATING
STATE
USE
USE
DEGRADATION OF
PERFORMANCE
•described in the
technical file
•the vehicle is
operated
•vehicle no more in
a design operating
state
The design operating state :
(Definition in the TSI wagon [7] )The ‘design operating state’ covers all conditions under which the unit is intended to
operate and its technical boundaries. This design operating state may go beyond the specifications of the TSI in order that
units may be used together in a train on the network under the safety management system of a railway undertaking.
It means a state when a vehicle, subsystem or part of subsystem is performing a required function
for which it has been designed, manufactured and tested. It includes at least the nominal operating
mode, it may include degraded operating modes, provided theses modes have been designed,
implemented and tested so that the essential requirements are met.
This definition is inspired by the definition in EN 13306 “Maintenance terminology”
When the vehicle is used, it will be more or less damaged and therefore will not remain fully
conform to its design operating state. The goal of maintenance is to restore this vehicle in its design
operating state.
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