Table 14 - Data for Terminal Stations (Based on reference 4) Active failure rate of a breaker (failure/year) = 0.0066 Passive failure rate of a breaker (failure/year) = 0.0005 Maintenance rate of a breaker (outages/year) = 0.2 Maintenance time of a breaker (hours) = 108 Switching time - one or more components (hours) = 1.0