AEMT - Association of Electrical and Mechanical Trades

23 October 2019
A new standard of repair for motors.
Sustainability can officially play a part in the remanufacture of rotating equipment. Karl Metcalfe of the AEMT (Association of Electrical and Mechanical Trades) outlines the potential impact and benefits of the international repair, overhaul and reclamation of rotating equipment standard IEC 60034-23:2019.

Until now environmental considerations for rotating equipment have mainly focussed on new equipment and energy efficiency; however, the full lifecycle of an existing device, including material consumption is now being considered. The new international standard IEC 60034-23 which was published in Spring 2019, is the first to include the requirements of the circular economy, which aims to reduce the consumption of resources.

Setting the standard for sustainability

The new standard establishes the benchmarks for repairing rotating equipment, maintaining efficiency levels, high standards of quality control and improving efficiency in associated pieces of equipment. The standard does not supersede those pertaining to specialist equipment, such as ATEX, nuclear, aviation, hydrogen cooled and traction, but it does include reference to them and several other standards.

By complying with the new standard, maintenance and repair facilities can prove their quality of workmanship and performance, as well as promoting their commitment to reducing waste and recycling resources. By following the international guidelines, the repaired equipment can be badged with an indicative sustainability statement.

The long-term aim of the standard is to maintain or improve the efficiency of equipment. It will allow upgrades to be implemented, if they are allowed by the original equipment manufacturer (OEM). This means that a repairer needs to be well equipped, with good quality control procedures and staffed by suitably qualified employees capable of delivering high quality repairs.

The circular economy

This brings us back to the circular economy, which aims to minimise waste through reusing, repairing, refurbishing and recycling existing materials and products. The repair of electrical machines fits-in exactly to this concept and by keeping equipment operational and energy efficient, we are minimising the use of additional resources.

For some larger - older machines, it may be possible to upgrade their efficiency at the same time as completing a repair. Using modern materials in the rewind and upgrading to a higher-grade insulation e.g. grade B to F, which is much thinner than the legacy component, the copper content of the windings can be increased, making it more efficient by reducing the electrical losses and extending the longevity of the motor.

At the same time, any materials that are removed during the repair process, such as old windings and bearings, can also be recycled, which again minimises the net increase in material consumption.

Not every motor, drive or gearbox can be economically repaired, and new units do offer increasingly high efficiency levels alongside advanced control and monitoring options. Best practice for an accurate efficiency and sustainability analysis however should consider both the repair and the replacement options, which is where the new standard will help to provide a balance of information in order to make the best environmental decision.

 
More News from the AEMT
Member News
25 March 2020
An issue with the diode ratings and the lack of surge protection in one design of rotating rectifier has been experienced by several rail operators, causing trains to be taken out of service. Working with its rail industry customers, maintenance engineering specialist Sulzer has recognized the common fault and developed a solution to the issue. The result is a faster repair that is now reducing the downtime for affected trains and helping to maintain scheduled services.
Industry News
12 March 2020
Operators of the V-Ex virtual exhibition platform have confirmed that over 50,000 people have recently visited online digital trade shows, sales environments and conferences. The unfortunate spread of Coronavirus has resulted in many exhibitors and visitors seeking a safe alternative to live physical shows.
Member News
27 February 2020
Most of us will have indulged in fast food on a long motorway drive. Restaurants at services receive a large quantity of customers - especially on weekends. One Sunday morning, a popular southern fried chicken restaurant at a services near Reading suffered a ventilation fan failure that stopped cooking completely. Luckily, Rotamec was available to quickly solve the problem.

Twitter Feed

News: A new standard of repair for motors.