Description: ratio between actual and desired availability ; Name: Availability due to production
Description: Ratio of actual production to required production, or any other reference level, over a specified period of time; Name: Production based availability
Description: norm/stipulation describing the explosion protection. The explosion protection type, the device category, the temperature class as well as the device / explosion group are taken from this norm. The type and number of the norm/stipulation with issue year and issue month must be given; Name: Reference norm of the explosion protection