Effect of Pump Station Operations on Head Capacity and Flow Rate. The
normal head capacity of a pump station is the tot head against which it will
pump at the most efficient operating point.
In other words, the design
speed (RPM) of the pumping units must be considered together with the
required head and desired throughput (GPM or BPH) to establish maximum
efficiency in design. Optimum standard military pipeline head capacities of
pipeline pump units are shown in Figure 5. It also shows these emergency
capacities. Maximum head capacities are for emergency operations only and
are never used as the basis for design.
Pump stations should not be
operated at maximum head capacity except during emergencies, and then for no
longer than 24 hours. Normal capacities are used for pipeline designing.
Operating characteristics of a standard pipeline pumping station