This study examines the dependability of a cold standby system made up of two similar units. One of the two units is always in use, and the other unit is on cold standby. The repairman could be present or not at the job site.

The system operates in both regular and abnormal weather situations. The current systems that are in place have been impacted by recent global climatic shifts. In this study, we examine how these climate fluctuations around the world affect the two-unit standby system. Furthermore, the impact of the repairman's absence is also investigated due to the lack of a skilled crew. When the weather is normal, the device works; when the weather is abnormal, the system shuts down and the device stops working. The mean time of system failure, steady-state availability, busy periods with maintenance, and cost-benefit analysis were evaluated, among other significant dependability metrics. all of the previously mentioned analyses were done by using regenerative point technique.