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Everyone understands that corrective maintenance not only incurs additional costs, it also results in lost production. Periodic maintenance has many advantages, but it presents certain shortcomings. It can fail to detect maintenance problems and may lead to the replacement of parts that are still serviceable. The advantage to condition based maintenance (CBM) is that it is a predictive maintenance approach that can reduce cost and prolong plant turnaround intervals by taking corrective actions only when necessary. CBM ensures that maintenance is performed only when necessary by monitoring each asset individually. Early diagnosis can identify the exact problem location. By focusing on specific components, service personnel can get the failed device or equipment back on line much quicker. By knowing in advance the state of deterioration of the device or equipment, maintenance personnel can schedule maintenance work at a time that minimizes the impact on production. Yokogawa has developed advanced diagnostics technologies and methodologies such as stress quantitative technology, deterioration failure detection analysis, and strength performance management that provide accurate diagnostic information and maximize the effectiveness of CBM.
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