Table 7 shows the wind farm specific inputs [1–18]. The inputs
[1–7] display the generic characteristics of the wind farm/turbines.
The inputs [8–14] symbolise the failure specific aspects. The inputs
[15–18] are related to the preventive maintenance activities.
Through the definition of the input [18], the influence of different
preventive maintenance practices can be investigated. In this
context, ‘Corrective maintenance or preventive maintenance’,
and ‘Preventive maintenance after corrective maintenance’, and
‘Preventive maintenance only after corrective maintenance’ are
considered in the developed methodology. The O&M technicians