Condition Monitoring/Predictive Maintenance

Root Cause Analysis is more Effective After Basics are Implemented

Maintenance Engineer Article Written By Idhammar Reliability & Maintenance Management Consultants.

Many reactive organizations conclude that RCA is the first agenda item for improving reliability. But after completing a few root cause activities, it's obvious that the results will point to already-known problem areas, such as inferior preventive maintenance (PM) and planning and scheduling. The initial reasoning to start an RCA initiative often follows this train of thought: We have a lot of equipment breakdowns, so . . . step one should be to analyze those breakdowns in order to . . . identify the root cause of the breakdowns in order to . . . eliminate the root causes.

It sounds logical and reasonable when presented this way, but if basic PMs and planning and scheduling aren't in place, most RCAs will point to these deficiencies. Typical outcomes of analyses fall on the wrong amount or type of lubrication, shaft misalignment, unbalanced equipment, missed inspections and overhauls. The "human" or "process" causes often relate to poorly planned work orders.


Planned Preventative Maintenance

TM SparesEntrusting business processes to dedicated service providers who can perform them more efficiently and cost effectively, allows organisations more freedom to innovate and specialise, pursuing excellence in their core business field.It could take as many as 20

Chewing gum manufacturer eliminates unplanned downtime

Schaeffler Reducing DowntimeBy installing bearing lubricators and vibration monitoring equipment on its production machinery, chewing gum maker Gumlink has eliminated bearing defects and unplanned stoppages.

Gumlink A/S, based in Denmark, develops, produces and sells chewing gum products. The company was established in 1915 and currently employs around 600 people and has an annual turnover of around

Emerson's Machinery Health

Belgian Mine HunterPredictive maintenance based on vibration monitoring and oil analysis in mine hunters extends maintenance periods and reduces costs
   
Belgian Navy uses predictive maintenance to reduce costs and extend maintenance periods.

AUSTIN, TEXAS (January 25, 2007)

Proviso Systems Ltd

Proviso Systems Ltd is a company that takes its mission very seriously to change the way the UK performs maintenance. We are committed to offering "Total Service Solutions" to your industry. Based upon extensive industrial knowledge, the Directors and staff of Proviso Systems recognise that now is the time for a totally innovative approach to condition monitoring and the field of predictive maintenance.
We are one of the premier services organisations in the UK because we offer more than technical expertise. We also put the power of choice in your hands ... and we are growing rapidly, so we can respond faster than ever before. Proviso Systems gives you choices. We help you implement individual technologies, or you can take advantage of our turnkey, multi-technology contract.

Sensor Reduces Costs at Chemical Plant

pH monitoring system.  Wyatt Partney, senior controls systems technician at Eastman

LORD Corporation Announces New Portable Balancing Instrument and Vibration Analyzer

LORD Balance Check Designed with an intuitive user interface that makes it easy to use for beginners and experts alike, the LORD Balance Check can be used to detect unbalance, identify the correction capacity required to offset unbalance, and verify balance once it is restored. With its flexible instrument platform, the portable tool can be used in the field for machinery diagnostics, quality testing on production lines, vibration or FFT analysis, bump (rap) testing, and live signal recording. Such flexibility provides users with a single tool capable of providing effective maintenance, inspection and diagnostic solutions for a broad range of services.

The LORD Balance Check hardware is based on a high-performance handheld computer. The instrument uses a 400MHz XScale processor, large color display, easy operation function keys and has high-speed data acquisition capabilities through USB, IrDA & RS232. Designed with durability in mind, the rugged Balance

Condition Monitoring

Condition based maintenance is the best way to optimise machine availability and reduce production losses. SPM products utilise all three leading condition monitoring methods:

SPM, our patented Shock Pulse Method for monitoring ball and roller bearings. The easiest and most precise technique for measuring lubrication condition and bearing damage.
VIB, vibration severity monitoring based on ISO recommendations.

EVAM, our method for evaluated vibration analysis, including spectrum and machine fault symptom analysis plus machine-specific evaluation.
Very important for fast and economic condition assessment is the automatic evaluation of all condition data:
Green - yellow - red status indication on all measuring points!

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.

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