Description: level of potential harm; Name: degree of severity
Description: Extent of loss, damage or harm caused by a fault or failure; Name: Severity 
Description: Speed that characterizes a pump in terms of its speed, flow rate per impeller eye, i.e. total flow for single-flow impeller, half flow for double-flow impeller, at the best efficiency point and head per stage at maximum impeller diameter ; Name: Specific speed