Description: Ability of an object, under given conditions and when required to be in a state, to perform a required function; Name: avbl
Description: Probability that a machine will, when used under specified conditions, operate satisfactorily and effectively; Name: Availability
Description: Determined total head at the outlet area of the installation, which corresponds to the sum of geodetic head, pressure head and velocity head ; Name: Total head at outlet area of the installation