Overview: This case study was submitted after a catastrophic fire destroyed five transformers at an Arizona Public Service (APS) substation. That fire impacted 400,000 customers, caused millions of dollars worth of damage, and required a rebuild of the substation.As part of the corrective action plan that was approved by the Arizona Corporation Commission (ACC), which is an Arizona regulatory body, APS agreed to incorporate leading practices into its substation maintenance processes and to implement a scheduling tool…
Solution: To meet the challenges of increasing reliability and becoming aligned with “leading practices“, APS brought in a “leading practices” expert and focused on documenting the “as-is” processes and capturing issues, opportunities, gaps, problems and unanswered questions. Once the as-is processes were documented, the group focused on addressing the issues and creating a “future state” process that reflected the leading practices…
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