Confirmation on quality assurance acc. to nuclear standard KTA 1401, Development and manufacturing of electric actuators and gearboxes for valve automation and application in nuclear power plants
Confirmation on quality assurance acc. to nuclear standard KTA 1401, Development, Manufacturing and Service of Electric Actuators and Gearboxes for Valve Automation and Application in Nuclear Power Plants
AUMA is celebrating its 60th anniversary this year. In September, the company invited employees, families and friends to a big anniversary celebration at its headquarters in Müllheim, Germany.
As partner of the KROHNE Academy, we invite you to Duisburg on 16 and 17 September 2025 for a free seminar on "Optimization of Safety Loops acc. to IEC 61508/61511".
Under the motto “Fit for the digital future” AUMA is enhancing its range of service offerings for upgrading existing plants with state-of-the-art, high-performance valve actuation technology.
SA multi-turn actuators are rated for open-close duty and positioning duty (classes A and B) / (short-time duty S2 - 15 min). Special sizing for longer running times is available for the S2 - 30 min duty.
The actuators can be combined with different actuator controls: From simple OPEN-CLOSE actuator controls to the micro-controlled version with logging of operating data or fieldbus interface.
Explosion-proof devices must be used in plants where potentially explosive atmospheres are likely to occur. These devices are designed so that they will not act as an ignition source. They neither generate ignition sparks, nor hot surface temperatures.
Certification is performed in close collaboration with national and international certification bodies.
Explosion-proof devices must be used in plants where potentially explosive atmospheres are likely to occur. These devices are designed so that they will not act as an ignition source. They neither generate ignition sparks, nor hot surface temperatures.
Certification is performed in close collaboration with national and international certification bodies.
With the SQVEx .2 part-turn actuators for open-close duty, AUMA offers electric actuators with variable operating time, certified for use in potentially explosive atmospheres.
Part-turn actuators of the SQVEx .2 type range are designed for open-close duty and positioning duty (classes A and B) / (short-time duty S2 - 15 min).
AC actuator controls are your perfect solution if the application requires self-adapting control functions, data logging, a configurable interface or if valve and actuator are to be integrated into a Plant Asset Management System due to advanced diagnostic functions.
AC actuator controls are equipped with a parallel interface for free configuration and/or interfaces to fieldbus systems as used within process automation.
The diagnostic functions comprise a time-stamped event report, torque characteristics logging, continuous recording of temperatures and vibration within the actuator and, furthermore, counting the number of starts and motor running times.
Further to the basic functions, AC actuator controls offer a number of options to meet special demands. These include torque bypass to unseat valves if tightly seated or functions for extending operating times to avoid water hammer within pipelines.
With the development of the AC 01.2, particular emphasis was laid on user-friendliness and the ease of integration of actuators into the DCS. The large graphic display is used to perform menu-controlled programming of the actuator controls, optionally using AUMA CDT via wireless Bluetooth connection. For fieldbus connections, AC programming can be performed from the control room.
AM actuator controls with their straightforward design are the perfect choice when using parallel signal transmission while a relatively low number of feedback signals is required. Few parameters need to be defined via sliding switches during commissioning, e.g. type of seating in end positions. Control is made via operation commands OPEN, STOP, CLOSE. Reaching an end position and collective fault signals are reported back to the DCS as feedback signals. These signals are visually displayed at the local controls via the indication lights. As an option, the valve position can be transmitted as 0/4 – 20 mA signal to the DCS.
If the drive shaft is to be positioned at a certain angle to the output drive shaft, combinations of the SA multi-turn actuators with GST spur gearboxes are used.
If the drive shaft is to be positioned at a certain angle to the output drive shaft, combinations of the SA multi-turn actuators with GST spur gearboxes are used. The output torque can be considerably multiplied.
A sophisticated sealing system combined with excellent corrosion protection properties qualify AUMA actuators for underwater use.
Double sealed cable glands at the particularly crucial electrical connection safely prevent any ingress of water. Inner seals at all housing covers, sometimes coming in pairs, as well as a solid shaft made of stainless steel complete the universal concept.
If the effective direction must be displaced by 90°, combinations of multi-turn actuators SA 07.2 – SA 16.2 / SA 25.1 – SA 48.1 and GK bevel gearboxes are used.
The SAI/SARI type range is designed for the automation of valves in nuclear power plants. SAI/SARI actuators are used inside containment and are qualified in compliance with IEEE 382-2006. The DBE resistant SAI/SARI actuators can take over safety functions under DBE conditions. Multi-turn actuators of SAI type range can be used for open-close duty and positioning duty. SARI actuators are designed for modulating duty.
The use of a frequency converter specially conceived for the actuator deployment offers many advantages. Besides the variable speed, the insensitivity to voltage and frequency variations, the lack of current increase during motor start-up as well as the valve protection by soft approaching of the end positions should be mentioned.
The rugged design makes these actuators extremely resistant to environmental impacts (standard corrosivity category C5, IP67, double sealed - enclosure protection is also ensured during commissioning) and can be further enhanced as an option.
The SEVEN actuator is available in three electronic variants: ECOTRON, PROFITRON and HiMod.
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