Abstract
Dependability analyses in the design phase are common in IEC 60300 standards to assess the reliability, risk, maintainability, and maintenance supportability of specific physical assets. Reliability and risk assessment uses well-known methods such as failure modes, effects, and criticality analysis (FMECA), fault tree analysis (FTA), and event tree analysis (ETA)to identify critical components and failure modes based on failure rate, severity, and detectability. Monitoring technology has evolved over time, and a new method of failure mode and symptom analysis (FMSA) was introduced in ISO 13379-1 to identify the critical symptoms and descriptors of failure mechanisms. FMSA is used to estimate monitoring priority, and this helps to determine the critical monitoring specifications. However, FMSA cannot determine the effectiveness of technical specifications that are essential for predictive maintenance, such as detection techniques (capability and coverage), diagnosis (fault type, location, and severity), or prognosis (precision and predictive horizon). The paper proposes a novel predictive maintenance (PdM) assessment matrix to overcome these problems, which is tested using a case study of a centrifugal compressor and validated using empirical data provided by the case study company. The paper also demonstrates the possible enhancements introduced by Industry 4.0 technologies.
Highlights
The centrifugal compressor is a highly complex system, given the nature of its components and transient operational behaviors
In the context of the oil and gas (O&G) industry, centrifugal compressors are used to enable the transportation of natural gas through subsea pipelines
predictive maintenance (PdM) needs to be incorporated with opportunistic maintenance to avoid shutdowns due to failures, unintended maintenance events, and high levels of service
Summary
The centrifugal compressor is a highly complex system, given the nature of its components and transient operational behaviors. Despite its complexity, it is widely applied in the oil and gas (O&G) industry to transport natural gas through subsea pipelines. It is widely applied in the oil and gas (O&G) industry to transport natural gas through subsea pipelines It plays a vital role in the operational availability and thereby the revenue of an O&G company, as it determines whether consumers receive natural gas. If the maintenance activities recommended by the generic maintenance schedule do not fit the actual health of the equipment, the equipment will be maintained either more or less than necessary, preventing its full utilization and handicapping operations
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