Diaphragms, bearings, valves, and other critical components sometimes need to be repaired or upgraded to withstand extraordinary operating conditions.​

There is no general approach for components repair or upgrade. Repair methods have their pros and cons, and each case has its particularities.​

In most cases the manufacturing time required for non-typical spare parts is long, and this creates complications as the power generation stands still in the wait for parts to be manufactured and shipped.​

Upgrades are intended to improve the performance of the machine and repairs will have an impact depending on each case.