Condition Monitoring/Predictive Maintenance

KEEPING WALKERS

Condition Based MaintenanceWalkers Snack Foods have long recognised the benefits associated with Condition Based Maintenance and for this reason has been implementing Condition Monitoring for a number of years.

Over a period of years two major gearboxes had failed catastrophically at one particular Walkers site. In each case the internal damage was so complete that there were no clues as to the root cause of the failures. In addition to the extensive damage, the unexpectedness of the failure resulted in lost production time and a serious economic impact on operations.

To address this, periodic measurements were initiated using the MHC-Memo instrument when a replacement extruder gearbox was installed in January 2003. The trend of Distress

monitoring the engineered world

MHCHolroyd Instruments Ltd draw upon AE experience stretching all the way back to 1974 when Trevor Holroyd (the founder of the company) started his research in this field in the prestigious Advanced Research Labs of Rolls Royce. Both fundamental research and development of Airline and Shop-Floor applications continued until in 1991 he left Rolls-Royce and set up Holroyd Instruments.

This background formed an excellent starting point from which to develop the unique AE sensor and AE signal processing upon which the MHC series of products are based. The first of these, the MHC - Machine Health Checker, was launched in 1993 and immediately carved out a reputation for being able to pick up machine faults even when other CM instruments failed.

The story of the MHC is one of initial scepticism that anything so simple could really work in the industrial environment. The phenomenon of the MHC is its ability to time and again cause such scepticism to evaporate as soon as it is seen in use detecting the presence of faults and localising their position.

Predictive Maintenance

Flir MontageThermal imaging has evolved into one of the most valuable diagnostic tools for Predictive Maintenance. By detecting anomalies often invisible to the naked eye, thermography allows corrective action to be taken before costly system failures occur.
Infrared cameras have become compact systems that look just like a normal video camera, are easy to use and generate a real-time high-resolution image. Numerous industries worldwide have discovered the advantage of incorporating infrared cameras in their Predictive Maintenance programs.

Thermal imaging has evolved into one of the most valuable diagnostic tools for Predictive Maintenance. By detecting anomalies often invisible to the naked eye, thermography allows corrective action to be taken before costly system failures occur.
Infrared cameras have become compact systems that look just like a normal video camera, are easy to use and generate a real-time high-resolution image. Numerous industries worldwide have discovered the advantage of incorporating infrared cameras in their Predictive Maintenance programs.

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