The Maintenance Department at the La Silla - Paranal Observatory has been an important base to keep the operations of
the observatory at a good level of reliability and availability.
Several strategies have been implemented and improved in order to cover these requirements and keep the system and
equipment working properly when it is required.
For that reason, one of the latest improvements has been the introduction of the concept of reliability, which implies that
we don't simply speak about reliability concepts. It involves much more than that. It involves the use of technologies,
data collecting, data analysis, decision making, committees concentrated in analysis of failure modes and how they can
be eliminated, aligning the results with the requirements of our internal partners and establishing steps to achieve
Some of these steps have already been implemented: data collection, use of technologies, analysis of data, development
of priority tools, committees dedicated to analyze data and people dedicated to reliability analysis. This has permitted us
to optimize our process, analyze where we can improve, avoid functional failures, reduce the failures range in several
systems and subsystems; all this has had a positive impact in terms of results for our Observatory.
All these tools are part of the reliability culture that allows our system to operate with a high level of reliability and