Apart from ensuring the conformity of the process and the quality of the product, professional calibration, first and foremost, improves the quality of the process. At many plants in the chemical process industries (CPI), measurement instrumentation is usually calibrated during scheduled maintenance downtimes. This basically means that metrological requirements are regarded as secondary to operational needs. The objective seems to be to produce a complete set of calibration certificates to pass the next audit again. Although this approach seems to be practical, in fact, it misses the point: professional calibration management is aimed at safe and efficient production processes and optimal product quality. Why calibrate? Calibration should not be considered primarily as a means to obtain a certificate for regulatory reasons. Calibration is much more than just a question of compliance. Rather, it affects the overall equipment effectiveness (OEE), and lacking or inadequate calibration might result in increased expenditures. Availability, performance and quality are the quantifiable components of OEE (Figure 1). All of these three can be affected by incorrect measurements. Availability may be impacted where failing devices might result… Click Here For Complete Article Text
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