Three large pumps with motors and discharge header piping
Pump Asset Management
and Optimization
The best practices in pump station management and operation
Why implement asset management for your pumping system?
Pumps wear out over time
Worn pump impeller and pump head and efficiency curves with pump health index green arrow New pump impeller and pump head and efficiency curves with pump health index
Peak Efficiency: 85%
Peak Efficiency: 65%
Factory-condition pump impeller and pump curves
Significantly worn pump impeller and pump curves
As pump impellers erode,
pumping capacity
and pumping efficiency
are progressively impaired.
Pump efficiency affects your bottom line.
Red and blue pie chart
Typical Pump Life Cycle Costs
Energy (80%)
Capital/Maintenance/Other (20%)
Ideally, water utilities could identify the pumps that are costing the most money and target them for repair.
Water pump graphic
Pump Wear Energy Cost:
$12,590/year
Pump Wear Energy Cost:
$550/year
But utilities have no way to identify worn pumps
and typically run their pumps to failure.
Regular pump testing is key to giving water utilities the ability to pinpoint
and repair worn pumps, rather than running pumps to failure.
Specific Energy's Asset Management Suite
Perform regular pump station audits
Regularly perform automated pump tests and compare current pump head and efficiency curves to factory pump curves. Pump Health Index (PHI) and reduced pump station capacity are calcuated along with the cost of operating worn and inefficient pumps.
Identify pumps that are candidates for repair or replacement
Each month, Specific Energy generates and delivers pump station reports and a system-wide asset management report that includes a list of all monitored pumps, ordered by Pump Health Index, so operators can identify pumps in need of repair.
Monitor pump operation in real time on field-tested pump curves
Specific Energy's user interface plots pump operating points in real time, so operators can identify pumps that are routinely operating outside their current Preferred Operating Ranges.
User interface for Specific Energy's pump asset management suite Click to learn more about Specific Energy's Asset Management Suite
Water tank against a blue sky
What about energy optimization?
Traditional Pump operations are not energy efficient
Achieving peak efficiency involves
continually
selecting the best set of pumps and speeds to minimze energy consumed per unit volume of water.
Graphic of pumps with pump speeds
'Specific Energy' is the ratio of the energy required (kWh) to produce a volume of water (millions of gallons). If you could continually operate a pump station at minimal specific energy,
you would be operating the station as efficiently as possible.
The equation for specific energy is the ratio of energy used to volume of water pumped The equation for specific energy is the ratio of energy used to volume of water pumped Graphic of pump station with five pumps inside Green arrow labeled Energy In (kWh) Blue arrow labeled Volume Out (MG)
Specific Energy's Optimization Suite
Continually operate at peak efficiency
Minimize energy consumption as flow and pressure requirements change throughout the day by continually operating at minimum Specific Energy.
Extend pump life
Continually operate within each pump's current computed Preferred Operating Range (POR) to maximize pump life and energy efficiency.
Reduce leaks with Digital Transient Control
Intelligently control pump transitions to limit pressure transient amplitudes that occur during pump starts, stops, and speed changes.
Manage peak demand charges and variable energy rates with Demand/Response
Limit peak power consumption per electrical meter to control peak power demand charges. Automatically adjust tank level and pressure constraints throughout the day in response to variable time-of-day energy rates.
Specific Energy pump optimization suite user interface Click to learn more about Specific Energy's Optimization Suite
Flow (gpm)
Pressure (psi)
5 minutes
10 minutes
15 minutes
20 minutes
25 minutes
30 minutes
Graphic of a water pump and the discharge header pipe
Max Pressure: 240 PSI
Min Pressure: 88 PSI
Δ Pressure: 152 PSI - Potential pipe break
Max Pressure: 185 PSI
Min Pressure: 150 PSI
Δ Pressure: 35 PSI - Safe pressure range
Digital Transient Control
Leaks are a huge problem for water utilities. In addition to the cost of lost water, a typical water utility spends about 30% of its operating budget repairing leaks. Even with pump control valves (PCVs), abrupt pump starts and stops create damaging pressure transients, also called water hammer. Nearly all line breaks occur during a pressure transient event.

Specific Energy's Optimization Suite employs Digital Transient Control to precisely control pressure and flow during pump starts, stops, and speed changes to limit transient amplitudes and reduce line breaks.
Digtial Transient Control Example
Traditional Operation
Digital Transient Control
Up and down arrows
Limit Peak Pressure, Reduce Leaks
Click the "Start Transient Event" below to simulate a traditional pump stop and see the resulting pressure transient wave. Move the slider below to "Digital Transient Control" to see how gently ramping down a pump's flow will significantly reduce the peak transient pressure.