This Practice addresses the reporting and analyzing of electrical events associated with the electrical power delivery system(s) for process industries. These events can affect the dependability of the electrical system. Adverse electrical system events can cause safety, environmental, and economic impact to employees, surrounding communities, and businesses. Understanding the relationship between electrical system dependability and the adverse impact due to events can help to improve the electrical power delivery system. Methods to calculate the effect of electrical events associated with the electrical power delivery system(s) for process industries are described within this Practice. The means to collect, store, calculate, and report data from electrical events can be by means of commercial software or maintenance management software as chosen by the owner. Existing utility-based metrics for both distribution and transmission systems will be reviewed as to their applicability for use in the process industry environment. Reporting and analyzing events associated with electrical utilization equipment, e.g., electric motors, lighting, HVAC, etc., is outside the scope of this Practice. Electrical events associated with utilization equipment should, however, be reported and analyzed through the owner’s maintenance management system.