Water & Wastewater Treatment
Beck has a long record of supplying electric actuators to the water industry, particularly in the USA, and has supplied UK heavy industry, including power, glass, steel and energy from waste, since the late 1950s. IPT Engineering is the UK representative for Beck.
The AMP8 Challenge
In the current AMP8 period, Ofwat has set clearer aims on reducing equipment failure and improving the value of assets. These include a shift from reactive to proactive maintenance, improved asset resilience by designing out weaknesses, and a balance of capital and operating expenditure over the whole life of the asset (TOTEX). Electric actuators on critical valves and dampers are now treated as critical reliability and control assets, because a failure can spread through the water network.
Where Conventional Actuators Fall Short
Conventional electric actuators with squirrel-cage induction motors need a high inrush current at every start, which generates heat. To protect the motor, the number of starts is limited, so on modulating duties the actuator is typically restricted to a start every 2 to 3 seconds, moves of about 1% of stroke and around 50% of nameplate torque. That limits PID loop performance, and can cause hunting, oscillation and poor set point tracking.
Worm gear drives add friction, heat, backlash and wear, and these actuators need regular inspection and maintenance, with rebuilds every 5 to 8 years in harsh duties. Oversizing to compensate adds cost, energy use and complexity over the life of the asset.
How Beck Addresses It
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Resilience: the no-burnout motor and spur gear train design out the weak points of conventional actuators, even in high-cycle modulating applications.
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Control performance: precise, repeatable positioning supports stable process control and reduces risk in the wider system.
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Lower maintenance: no routine maintenance requirements reduce operating expenditure, planned outage work and maintenance risk.
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Lower whole-life cost: no oversizing, low power draw and long service life support TOTEX targets.
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Reduced complexity: fewer protection devices and components mean fewer potential failure points, and simpler installation and commissioning.
More precise, reliable control also supports the compliance and environmental requirements set by Ofwat and the Environment Agency.
Discuss Your Water Application
We are happy to arrange discussions and product demonstrations for water companies and their contractors, to show how Beck actuators can meet your reliability and asset performance requirements.