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CHESS SUBSEA ENGINEERING – RISK BASE INSPECTION METHODOLOGY
CHESS SUBSEA ENGINEERING – RISK BASE INSPECTION METHODOLOGY Subsea Systems Risk Based Inspection (RBI)  Introduction  Subsea Systems RBI Methodology  Risk Acceptance Criteria  Subsea RBI Workflow  Subsea Equipment Risk Determination  Reliability Data for Offshore Equipment Outline Introduction Subsea Systems integrity cannot be over emphasized especially as subsea operator’s move into deeper waters. This is reflected in high costs and challenges associated. Subsea Systems includes wellheads, wellhead connectors, trees, manifolds, jumpers, PLETs, pipeline connectors, pipelines and risers, and umbilicals and umbilical terminations assessmbly (UTA) (see Fig.1.0). Subsea System Risk Base Inspection (RBI) is a technique that uses equipment criticality and failure modes as criteria for establishing maintenance and inspection plan for each component of the system. Subsea Systems RBI operates on many levels throughout project lifecycle. A central register is often used to aggregate, prioritize, and manage information’s on major risks. The scope of the RBI system must be multidisciplinary and should include technical, commercial, financial, and political risks, and must equally consider both threats and opportunities. Figure 1.0: Subsea Systems Methodology CHESS SUBSEA ENGINEERING – RISK BASE INSPECTION METHODOLOGY Subsea Systems Risk Based Inspection (RBI)  Introduction  Subsea Systems RBI Methodology  Risk Acceptance Criteria  Subsea RBI Workflow  Subsea Equipment Risk Determination  Reliability Data for Offshore Equipment Outline Introduction Subsea Systems integrity cannot be over emphasized especially as subsea operator’s move into deeper waters. This is reflected in high costs and challenges associated. Subsea Systems includes wellheads, wellhead connectors, trees, manifolds, jumpers, PLETs, pipeline connectors, pipelines and risers, and umbilicals and umbilical terminations assessmbly (UTA) (see Fig.1.0). Subsea System Risk Base Inspection (RBI) is a technique that uses equipment criticality and failure modes as criteria for establishing maintenance and inspection plan for each component of the system. Subsea Systems RBI operates on many levels throughout project lifecycle. A central register is often used to aggregate, prioritize, and manage information’s on major risks. The scope of the RBI system must be multidisciplinary and should include technical, commercial, financial, and political risks, and must equally consider both threats and opportunities. Figure 1.0: Subsea Systems Methodology CHESS SUBSEA ENGINEERING – RISK BASE INSPECTION METHODOLOGY Subsea Systems Risk Based Inspection (RBI)  Introduction  Subsea Systems RBI Methodology  Risk Acceptance Criteria  Subsea RBI Workflow  Subsea Equipment Risk Determination  Reliability Data for Offshore Equipment Outline Introduction Subsea Systems integrity cannot be over emphasized especially as subsea operator’s move into deeper waters. This is reflected in high costs and challenges associated. Subsea Systems includes wellheads, wellhead connectors, trees, manifolds, jumpers, PLETs, pipeline connectors, pipelines and risers, and umbilicals and umbilical terminations assessmbly (UTA) (see Fig.1.0). Subsea System Risk Base Inspection (RBI) is a technique that uses equipment criticality and failure modes as criteria for establishing maintenance and inspection plan for each component of the system. Subsea Systems RBI operates on many levels throughout project lifecycle. A central register is often used to aggregate, prioritize, and manage information’s on major risks. The scope of the RBI system must be multidisciplinary and should include technical, commercial, financial, and political risks, and must equally consider both threats and opportunities. Figure 1.0: Subsea Systems Methodology
CHESS SUBSEA ENGINEERING – RISK BASE INSPECTION METHODOLOGY Subsea Systems Risk Based Inspection (RBI) The main objective of this course is as follows:  Define steps to improve facility performance.  Make use of a systematically applied equipment database.  Incorporate advances in technology promptly.  Optimization of inspection, test, and the maintenance work.  Eliminate unplanned equipment failures.  Improve plant performance.  Minimise costs Subsea Systems RBI Methodology The focus here is to identify and analyze all significant failure causes and modes in other to develop a cost- effective inspection plan for subsea equipment. RBI technical approach balances the risk reduction (benefits) against the inspection costs through prioritizing and optimizing inspection efforts. Typical RBI planning results includes specification of future inspections in terms of:  What subsea systems to inspect;  What degradation or failure mode to inspect for;  How should inspection be carried out;  When can we inspect;  How do we report inspections results;  What are the necessary directions for actions if defects are found or not found. Recent information of subsea systems or components in terms of design, construction, inspection, and maintenance must be used to ensure future inspection optimization. This forms the basis of new and better understanding of operational conditions in order to update system structural reliability and further anticipate time for next inspection. There are two (2) ways of analyzing Subsea Systems RBI: I. Analyze the subsea system, such as manifold or jumper, as a pipeline. Popular software for this analysis is the PaRIS software developed by OPR. II. Mechanical RBI techniques: This involves using failure of component parts (see Figure 1.1). CHESS SUBSEA ENGINEERING – RISK BASE INSPECTION METHODOLOGY Subsea Systems Risk Based Inspection (RBI) The main objective of this course is as follows:  Define steps to improve facility performance.  Make use of a systematically applied equipment database.  Incorporate advances in technology promptly.  Optimization of inspection, test, and the maintenance work.  Eliminate unplanned equipment failures.  Improve plant performance.  Minimise costs Subsea Systems RBI Methodology The focus here is to identify and analyze all significant failure causes and modes in other to develop a cost- effective inspection plan for subsea equipment. RBI technical approach balances the risk reduction (benefits) against the inspection costs through prioritizing and optimizing inspection efforts. Typical RBI planning results includes specification of future inspections in terms of:  What subsea systems to inspect;  What degradation or failure mode to inspect for;  How should inspection be carried out;  When can we inspect;  How do we report inspections results;  What are the necessary directions for actions if defects are found or not found. Recent information of subsea systems or components in terms of design, construction, inspection, and maintenance must be used to ensure future inspection optimization. This forms the basis of new and better understanding of operational conditions in order to update system structural reliability and further anticipate time for next inspection. There are two (2) ways of analyzing Subsea Systems RBI: I. Analyze the subsea system, such as manifold or jumper, as a pipeline. Popular software for this analysis is the PaRIS software developed by OPR. II. Mechanical RBI techniques: This involves using failure of component parts (see Figure 1.1). CHESS SUBSEA ENGINEERING – RISK BASE INSPECTION METHODOLOGY Subsea Systems Risk Based Inspection (RBI) The main objective of this course is as follows:  Define steps to improve facility performance.  Make use of a systematically applied equipment database.  Incorporate advances in technology promptly.  Optimization of inspection, test, and the maintenance work.  Eliminate unplanned equipment failures.  Improve plant performance.  Minimise costs Subsea Systems RBI Methodology The focus here is to identify and analyze all significant failure causes and modes in other to develop a cost- effective inspection plan for subsea equipment. RBI technical approach balances the risk reduction (benefits) against the inspection costs through prioritizing and optimizing inspection efforts. Typical RBI planning results includes specification of future inspections in terms of:  What subsea systems to inspect;  What degradation or failure mode to inspect for;  How should inspection be carried out;  When can we inspect;  How do we report inspections results;  What are the necessary directions for actions if defects are found or not found. Recent information of subsea systems or components in terms of design, construction, inspection, and maintenance must be used to ensure future inspection optimization. This forms the basis of new and better understanding of operational conditions in order to update system structural reliability and further anticipate time for next inspection. There are two (2) ways of analyzing Subsea Systems RBI: I. Analyze the subsea system, such as manifold or jumper, as a pipeline. Popular software for this analysis is the PaRIS software developed by OPR. II. Mechanical RBI techniques: This involves using failure of component parts (see Figure 1.1).
CHESS SUBSEA ENGINEERING – RISK BASE INSPECTION METHODOLOGY Subsea Systems Risk Based Inspection (RBI) Figure 1.1 - Analysis Hierarchies for a Mechanical RBI Methodology CHESS SUBSEA ENGINEERING – RISK BASE INSPECTION METHODOLOGY Subsea Systems Risk Based Inspection (RBI) Figure 1.1 - Analysis Hierarchies for a Mechanical RBI Methodology CHESS SUBSEA ENGINEERING – RISK BASE INSPECTION METHODOLOGY Subsea Systems Risk Based Inspection (RBI) Figure 1.1 - Analysis Hierarchies for a Mechanical RBI Methodology