Inspections and preventive maintenance
The upkeep of the high voltage network is one of TenneT’s most important tasks. It reduces the risk of disruptions and ensures the security of the electricity supply. Our experience over the years has shown what we should do to keep our network in a good condition and how we can keep the maintenance costs affordable, without taking irresponsible risks.
- Carrying out fewer but targeted inspections
- Doing less preventive maintenance work in general, but more where necessary
- Replacing equipment if that is the most efficient option
Fewer, but more focused inspections and replacements
Inspections help us to spot potential problems before failures occur. However, the equipment parts that could potentially be at risk are not always visible. That’s why we target our inspections, which also means we don’t have to conduct as many.
Much of the high-voltage network was built in the 1960s and is approaching the end of its expected technical life. We therefore keep a close eye on the older equipment and replace it as necessary.
In the event of a large disruption, we investigate whether it is better to replace the faulty equipment or repair it. Sometimes repairs can be more expensive or the new equipment is superior. We also look out for trends in faults so that we can take action to prevent larger problems.