Description: Period of time during which an item performs its intended function, it includes all the time a machine is continuously running from start-up until it is shut down.; Name: ot
Description: passed time period after comissioning of a system, sub-system, component or piping; Name: Operating time 
Description: combination of letters and/or numbers created by the customer to uniquely identify the product. The ordering process is carried out by the customer under this code; Name: order number of customer