A finished installation may not simply be used. Commissioning is a regulated procedure that demonstrates that everything works safely before the first train runs.
What commissioning governs
Commissioning is the regulated transition of a railway installation from the construction site into operation. The authoritative regulation is the Railway Commissioning Approval Ordinance (EIGV). It defines the conditions under which a modified or new installation may go into operation.
At its core it is about proof: the installation must be safe and comply with the applicable regulations. Only once this proof is complete and checked is commissioning permissible.
The commissioning process
The importance of verification
Commissioning is only as good as the documentation underlying it. Whatever was not documented in a verifiable way during execution cannot be demonstrated at the end. A successful commissioning therefore does not begin at the close but with the very first construction phase.
The role of construction supervision
Railway construction supervision accompanies the installation throughout the entire construction phase and thereby provides the basis of commissioning: the checked, seamless verification. It is the bracket between execution and operation and ensures that no open points delay the start at the end.
Anyone who awards construction supervision and the support of commissioning from a single source avoids the classic break between construction and operation, where knowledge and responsibility are lost at the handover.
Partial commissioning and fallback levels
Large projects rarely go into operation in one step. Often sections are commissioned one after another while others are still under construction. Each partial commissioning needs its own evidence and its own operational rule.
Added to this are fallback levels in case a new installation is disrupted. These too must be planned, demonstrated and taken into account at commissioning. Construction supervision ensures that these transitions are documented seamlessly and that operation remains safe at every stage.
Parties involved and common pitfalls
Several parties work together on a commissioning: construction supervision, which provides the evidence, independent assessors, the future operator and the competent authority. The more cleanly these parties cooperate throughout the construction phase, the more smoothly the transition into operation runs.
The most common pitfall is documentation that is only compiled at the end. Whatever was not captured continuously and verifiably during execution is missing later and can often only be reconstructed afterwards at great effort.
A second pitfall is time windows planned too tightly. Commissioning often takes place in closure windows, and if testing or remaining work takes longer than planned, the whole date shifts, with corresponding operational consequences.
Seamless construction supervision addresses both risks: it documents verifiably from the outset and plans commissioning as a fixed part of the construction process, not as a downstream step.
Häufige Fragen
What is the EIGV?
The Railway Commissioning Approval Ordinance. It governs the conditions under which a new or modified railway installation may go into operation.
Why can commissioning be delayed?
Usually because of gaps in verification. Whatever was not documented verifiably during execution cannot be proven at the end.
What role does construction supervision play?
Throughout the construction phase it provides the checked, seamless documentation that is the basis of commissioning, and accompanies the transition into operation.
Edoé Lassey
Edoé Lassey führt die LND Ingenieure GmbH als Bauüberwacher und Ingenieur für Infrastruktur- und Tiefbau. Die zertifizierten Rollen Technischer Berechtigter, Sicherungsüberwacher, Schaltantragsteller und Bauvorlageberechtigung gehören zum Leistungskern.
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