PLANT MANAGEMENT
vibration or temperature or readings exceed pre-set thresholds. Maintenance and operations alike can continue running the equipment as long as it is safe, in the meantime ordering parts and scheduling a repair at a convenient time. Forecasting maintenance in advance ultimately saves costs through better labour planning and procuring components in advance.
TIMESTAMP ISSUES WHEN THEY OCCUR
A key aspect of maintenance is to identify causes of failure with the goal of preventing them in future. T e forensic analysis required for this task begins with data. Temperature and vibration readings on the device need to be available with suffi cient quantity and time resolution to be correlated with external events. Continuous condition monitoring provides timestamp output available to multiple parties simultaneously with proper permissions.
IDENTIFY ROOT CAUSES OF PROBLEMS By correlating the emergence of a defect signature in vibration or temperature data
Level Measurement
■ Visual Level Indicators VLI ■ Tank Level Instruments TLI
■ Meets the design standards of the oil & gas, petrochemical, hydrocarbon and LPG/LNG industries
■ Pressures from vacuum to 500 bar ■ Densities down to 0,27 g/cm³ ■ No maintenance (fit and forget) ■ More than 50 years of experience ■ Certified according CE, EAC, Pattern Approval, ABS, BV, DNV-GL, LR, RINA, RMRS ...
Oil & Gas Industry Petrochemical Industry
Chemical & Pharmaceutical Industry Power Industry
Shipbuilding & Marine Industry Water Management
ARCA Flow Group worldwide: Competence in valves, pumps & cryogenics
WEKA AG · Schürlistrasse 8 CH-8344 Bäretswil · Switzerland Phone +41 43 833 43 43 Fax +41 43 833 43 49
info@weka-ag.ch ·
www.weka-ag.ch
with production and maintenance operations, reliability experts can identify root causes of failure. Whether the issue is lubrication breakdown, over tightening a belt, misalignment of a replacement shaft or running a machine beyond design specs, continuous granular data provides level of detail necessary in most cases to identify cause. Even better, vibration analysis can be performed after the repair to ensure that the replacement components are properly installed and aligned.
UNCOVER SECONDARY SYSTEM FAILURES Modern automation systems are highly interdependent, not just at the motion level but at the level of supporting subsystems. Consider a bearing issue identifi ed by a continuous condition monitoring system. T e fl aw might be caused just as easily by a problem with the automatically lubrication system as by the presence of a bearing race defect. By analysing continuous temperature and vibration data, the reliability technician was able to identify the vibration signature of lubrication.
Inside of inner race bearing showing a wear defect caused by improper fi t between the shaft and the bearing bore. The wear was so severe it caused the bearing looseness that can be seen in image above
Abhishek Jadhav is a mechanical engineer at Dynapar.
www.dynapar.com
www.engineerlive.com 27
Please visit us at our website:
www.weka-ag.ch
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