*3.1. ABCD Procedure for PSMD Power Plant*

As seen from the fault type mode in Figure 2, the percentage of the total fault incidences was around 26% of the addressed transformers. These faults have already occurred and need proper corrective actions to avoid further progress. However, the recommended corrective actions for these faults are demonstrated in the discussion section. The category that needs to be further investigated from a sustainability perspective is "Starting Fault", to detect faults in the initial stage and find solutions to avoid transformer failures.

#### 3.1.1. Step A: Building a Shared Understanding and Vision

The main vision of the PSMD power plant is to provide sustainable power for customers in the future with regard to minimized costs and implied integration between maintenance and sustainability aspects; social, environmental, and economic. The other visions are preventing transformers failures and catastrophic accidents, extending the lifetime of the transformers, and finding a solution to the hazardous oil waste.
