Applications of continuum fatigue risk monitoring in riser connectors system integrity management

2022 ◽  
Vol 245 ◽  
pp. 110540
Author(s):  
Yifei Yan ◽  
Shengyue Zhang ◽  
Xin Jin ◽  
Liangbin Xu ◽  
Xiangzhen Yan
Keyword(s):  
Risk Monitoring ◽  
System Integrity ◽  
Integrity Management

A Concept for Floating Offshore Wind Mooring System Integrity Management Based on Monitoring, Digital Twin and Control Technologies

2021 ◽  
Author(s):  
Alberto Puras Trueba ◽  
Jonathan Fernández ◽  
Carlos A. Garrido-Mendoza ◽  
Alessandro La Grotta ◽  
Jon Basurko ◽  
...  
Keyword(s):  
Control Strategies ◽  
Offshore Wind ◽  
Motion Sensor ◽  
Mooring System ◽  
Mooring Lines ◽  
Efficient Operation ◽  
Digital Twin ◽  
System Integrity ◽  
Integrity Management ◽  
And Control

Abstract Efficient operation of mooring systems is of paramount importance to reduce floating offshore wind (FOW) energy costs. MooringSense is an R&D project which explores digitization to enable the implementation of more efficient integrity management strategies (IMS) for FOW mooring systems. In this work, the MooringSense concept is presented. It includes the development of several enablers such as a mooring system digital twin, a smart motion sensor, a structural health monitoring (SHM) system and control strategies at the individual turbine and farm levels. The core of the digital twin (DT) is a high-fidelity fully coupled numerical model which integrates simulation tools to allow predictive operation and maintenance (O&M). Relevant parameters of the coupled model are updated as physical properties evolve due to damages or degradation. The DT assimilates information coming from the physical asset and environmental sensors. Besides, a smart motion sensor provides feedback of the attitude, position, and velocity of the floater to allow the computation of virtual loads in the mooring lines, the detection of damages by the SHM system and the implementation of closed-loop control strategies. Finally, the IMS takes advantage of the mooring system updated condition information to optimize O&M, reduce costs and increase energy production.

Optimizing the Management of Excavation and Repair Data From Inline Inspection Programs

2020 ◽  
Author(s):  
Miaad Safari ◽  
David Shaw
Keyword(s):  
Condition Monitoring ◽  
Data Gathering ◽  
Management Program ◽  
Data Uncertainty ◽  
Pipeline System ◽  
System Integrity ◽  
Integrity Management ◽  
External Corrosion ◽  
Inspection Data ◽  
Superior Approach

Abstract As integrity programs mature over the life of a pipeline, an increasing number of data points are collected from second, third, or further condition monitoring cycles. Types of data include Inline Inspection (ILI) or External Corrosion Direct Assessment (ECDA) inspection data, validation or remediation dig information, and records of various repairs that have been completed on the pipeline system. The diversity and massive quantity of this gathered data proposes a challenge to pipeline operators in managing and maintaining these data sets and records. The management of integrity data is a key element to a pipeline system Integrity Management Program (IMP) as per the CSA Z662[1]. One of the most critical integrity datasets is the repair information. Incorrect repair assignments on a pipeline can lead to duplicate unnecessary excavations in the best scenario and a pipeline failure in the worst scenario. Operators rely on various approaches to manage and assign repair data to ILIs such as historical records reviews, ILI-based repair assignments, or chainage-based repair assignments. However, these methods have significant gaps in efficiency and/or accuracy. Failure to adequately manage excavation and repair data can lead to increased costs due to repeated excavation of an anomaly, an increase in resources required to match historical information with new data, uncertainty in the effectiveness of previous repairs, and the possibility of incorrect assignment of repairs to unrepaired features. This paper describes the approach adopted by Enbridge Gas to track and maintain repairs, as a part of the Pipeline Risk and Integrity Management (PRIM) platform. This approach was designed to create a robust excavation and repair management framework, providing a robust system of data gathering and automation, while ensuring sufficient oversight by Integrity Engineers. Using this system, repairs are assigned to each feature in an excavation, not only to a certain chainage along the pipeline. Subsequently, when a new ILI results report is received, a process of “Repair Matching” is completed to assign preexisting repairs and assessments to the newly reported features at a feature level. This process is partially automated, whereby pre-determined box-to-box features matched between ILIs can auto-populate repairs for many of the repaired features. The proposed excavation management system would provide operators a superior approach to managing their repair history and projecting historical repairs and assessments onto new ILI reports, prior to assessing the ILI and issuing further digs on the pipeline. This optimized method has many advantages over the conventional repair management methods used in the industry. This method is best suited for operators that are embarking on their second or third condition monitoring cycle, with a moderate number of historical repairs.

AC Interference Effect on NG Pipeline and its Mitigation Techniques

2015 ◽  
Author(s):  
Rukmangad V. Kondamgire
Keyword(s):  
Interference Effect ◽  
Risk Mitigation ◽  
Gas Pipeline ◽  
Mitigation Measures ◽  
Pipeline System ◽  
System Integrity ◽  
Operational Life ◽  
Integrity Management ◽  
Mitigation Techniques ◽  
Ac Interference

All gas pipeline system operators should produce and demonstrate compliance with operational and maintenance philosophies, which include integrity management policies, procedures and safe systems of work throughout their operational life. They should identify all hazards that may impact the system integrity with respect to tolerable individual and societal risk. Risk assessment should be undertaken, mitigation measures established and any residual risk associated with the management of each risk mitigation strategy must be defined and risk ownership established. A credible integrity risk is associated with Alternating Current (AC) induced corrosion of underground steel pipelines that are routed in close proximity to high voltage overhead electrical power systems. This document provides information about AC interference effect on pipeline and demonstrates credible risk mitigation techniques with integrity management. It also describes safety measures and new mitigation technique to avoid electromagnetic interference generated by electric line on underground natural gas pipeline during installation and operational life where the pipeline is laid in common ROU. It shall be emphasised that the owner/operator bears responsibility for the safe operation and maintenance of pipeline system and implement required means and methods to assure integrity of system throughout the design life of the pipeline system.

Reassessment Issues in Life Cycle Structural Integrity Management of Fixed Steel Installations

2002 ◽  
Author(s):  
A. Stacey ◽  
M. Birkinshaw ◽  
J. V. Sharp
Keyword(s):  
Life Cycle ◽  
Structural Integrity ◽  
Offshore Structures ◽  
Iso Standard ◽  
Existing Structures ◽  
System Integrity ◽  
The Status ◽  
Important Trend ◽  
Integrity Management ◽  
Inspection Data

There is an increasing number of ageing installations in UK waters, many of which are being or will be operated beyond their original planned service life. This important trend, in combination with (a) the introduction of risk-based goal-setting regulations which require the maintenance of life cycle integrity as a key target, (b) the development of guidelines in the draft ISO standard for offshore structures, ISO 19902, and (c) significant technology advances in recent years (e.g. in loading, fatigue, fire and blast integrity and system integrity), makes reassessment an important consideration in the structural integrity management of offshore installations. The paper outlines procedures in place for reassessment, including those in the draft ISO standard, and reviews recent technical advances relevant to this area. The important role of inspection and maintenance for existing structures is assessed and related to both current practices and target requirements. The need for reliable and comprehensive inspection data is important for reassessment and the status of this is reviewed. An overall framework for reassessment is developed in the light of the above issues.

In-Service Dent Management From an Operator’s Perspective

2004 ◽  
Author(s):  
Keith Adams ◽  
Joe Zhou
Keyword(s):  
Cyclic Stress ◽  
Management Program ◽  
Low Resolution ◽  
Element Analysis ◽  
Stress Concentrators ◽  
Integrity Assessment ◽  
The Past ◽  
System Integrity ◽  
Integrity Management

Pipeline dents are common occurrences that have a potential integrity threat to the system. Dents are typically found through in-line inspections, and historically, low-resolution in-line inspection geometry tools were used to find the locations of dents. These tools gave little information about shape, orientation or other dent features. Newer ‘high-resolution’ tools give a much clearer picture of the dent shape, location, orientation and location of welds. This information has been previously unavailable and has enabled dent integrity assessment with much greater accuracy and confidence. However this still leaves the question of how to best address the information from older, low-resolution inspection tools. In the past, CSA Z662 required that all dents with a deflection greater than 6% or that contained stress concentrators, including welds, had to be repaired. In the newly published 2003 edition of CSA Z662, dents can be assessed by an engineering assessment to determine their acceptability. Historical evidence has shown that dents less than 6% can also be subject to failure under certain conditions, and is indicated in the notes of CSA Z662-03 10.8.2.4.2. Dents that contain stress concentrators, including corrosion, welds and cracks must be given special consideration, however often little information is available for the dent from solely a geometry tool. TransCanada PipeLines Limited has been involved in the development of a dent assessment methodology for several years. Based on the 2003 revisions to CSA Z662, TransCanada has started to implement a dent integrity management program. This paper discusses the approach taken by TransCanada: to create a database of dent features, classification of dents, finite element analysis (FEA) to determine cyclic stress spectra, fatigue analysis, validation through dig programs, and the management of these features from a system integrity standpoint.

Developing an Engineering Based Integrity Management Program for Piping, Pipelines, and Plant Equipment

2014 ◽  
Author(s):  
Chris Alexander ◽  
Julian Bedoya
Keyword(s):  
Case Studies ◽  
Analytical Techniques ◽  
Experimental Methods ◽  
Management Program ◽  
Piping System ◽  
Safe Operation ◽  
The Past ◽  
System Integrity ◽  
Integrity Management ◽  
Plant Equipment

Establishing integrity for piping and pipelines requires an understanding of the specific threats, their relationship to the overall condition of the system, and the mitigating measures required to assure safe operation. In the past, industry has relied on years of research and experience to develop a set of tools to analyze these threats and apply conservative solutions to ensure integrity and fitness for service. An effective integrity management program as discussed in this paper, known as the Engineering Based Integrity Management Program (EB-IMP), provides operators with a resource for integrating inspection results, analysis, and testing to qualify the components within a pressurized system. This paper presents a detailed discussion on how experience, advances in analytical techniques, experimental methods, and engineering rigor are combined to develop a tool to characterize and ensure system integrity. Several case studies are included to demonstrate how the EB-IMP method was used to evaluate the integrity of a piping system, as well as rail gondola cars used to transport coal. The intent with the approach presented in this paper is to foster further developments for advanced integrity management efforts.

Geohazard Management Approach Within Safety Case

2018 ◽  
Author(s):  
Dario Zapata ◽  
Ingrid Pederson ◽  
Sean Keane
Keyword(s):  
Case Report ◽  
Performance Metrics ◽  
Maintenance Phase ◽  
Management Program ◽  
Management Approach ◽  
Pipeline System ◽  
Independent Evidence ◽  
System Integrity ◽  
Safety Case ◽  
Integrity Management

Safety case is utilized within the Enbridge Pipeline Integrity Management Program as a means to provide evidence that the risks affecting the system have been effectively mitigated (LeBlanc, et al. 2016). The safety case is an independent, evidence-based assessment based on system integrity management processes applied across all pipelines. This paper describes the process in which safety case methodology was implemented to manage geohazard threats. The benefits of assessing geohazard and other integrity threats will also be discussed. The safety case report documents the opportunities to address the identified problems in addition to the relationship between hazards, implemented controls, and associated susceptibility. To demonstrate that adequate safety controls for geohazard threats have been incorporated into the operational and maintenance phase of the pipeline system, the geohazard management component of the safety case was assessed using a bowtie diagram. The results gave visibility to the geohazard program and its effectiveness. Predefined safety performance metrics with probabilistic and deterministic criteria are evaluated to confirm the geohazard program’s continued effectiveness. Results from the safety case assessment identify opportunities for improvement and provide a basis for revision to maintenance, assurance and verification programs. Ultimately the assessment demonstrates that geohazard threats in the pipeline system are being recognized and assessed. The assessment provides evidence that adequate resources and efforts are allocated to mitigate the risk and identifies continuous improvement activities where needed. The safety case report generated as the final portion of an integrity management framework demonstrates risk is as low as reasonably practicable (ALARP).

Pipeline Integrity Management: An Approach to Geotechnical Risks

2008 ◽  
Author(s):  
Hudson Re´gis Oliveira
Keyword(s):  
Management Plan ◽  
Power Lines ◽  
Design Phase ◽  
System Integrity ◽  
Oil Pipelines ◽  
Integrity Management ◽  
Managing System ◽  
Geotechnical Problems ◽  
Very High ◽  
Geotechnical Risk

Linear works, such as highways, power lines, gas and oil pipelines among others, as well as other types of engineering works can be threaten by natural hazards, such as landslides, floods, erosions, earthquakes, hurricanes, seaquakes and others, which may lead to great environmental impacts, very high sum of money lost and even deaths. Aiming to reduce geological and geotechnical risks, preventive or corrective actions can be executed from the design phase to the operational and maintenance stages in pipelines. In the last phase, an integrity management plan can be adopted to mitigate residual risks not covered on the design and construction phases. One of the alternatives to implement a gas pipeline integrity management is found in the code “Managing System Integrity of Gas Pipelines” – ASME B31.8S (2005). However, this code has some limitations in actions concerning to prevention, identification and correction of geological and geotechnical problems. This paper presents information about geotechnical risks in transmission pipelines and tools applied in identification, prevention and correction of geotechnical problems in pipelines, as well as, others that can potentially be applied in pipelines. A basic pipeline integrity management plan focused on geotechnical risks is proposed in the paper, transcribed as a contribution to ASME B31.8S Code. This plan is composed by actions: from identification, prevention, evaluation and analysis to correction of geotechnical instabilities in pipelines. It is composed by a flowchart with all actions selected for the geotechnical risk care. The plan was developed based on directions set in ASME B31.8S Code, including Brazilian, Italian and Canadian experiences.

A Proposed Geotechnical Risks Management Plan for Pipeline Integrity

2013 ◽  
Author(s):  
Hudson Régis Oliveira
Keyword(s):  
Management Plan ◽  
Power Lines ◽  
Gas Pipelines ◽  
System Integrity ◽  
Oil Pipelines ◽  
Integrity Management ◽  
Managing System ◽  
Geotechnical Problems ◽  
Very High ◽  
Geotechnical Risk

Linear works, such as highways, power lines, gas and oil pipelines among others, as well as other types of engineering works can be threaten by natural hazards, such as landslides, floods, erosions, earthquakes, hurricanes, seaquakes and others, which could lead to great environmental impacts, very high sum of money lost and even deaths. Aiming to reduce geological and geotechnical risks, preventive or corrective actions can be executed from the design phase to the operational and maintenance stages in pipelines. In this last phase, an integrity management plan of these facilities can be adopted, with the purpose of mitigating residual risks that had not been covered on the design and construction phases. One of the alternatives to implement an integrity management of gas pipelines is found in the code “Managing System Integrity of Gas Pipelines” – ASME B31.8S (2005). However, this code has some limitations in actions concerning to prevention, identification and correction of geological and geotechnical problems. This paper presents information about geotechnical risks in transmission pipelines and tools applied in identification, prevention and correction of geotechnical problems in pipelines, as well as, others with potential to be applied in pipelines. A basic pipeline integrity management plan focused in geotechnical risks is proposed in the paper, transcribed as a contribution to ASME B31.8S Code. This plan is composed by actions: from identification, prevention, evaluation and analysis to correction of geotechnical instabilities in pipelines. The plan is composed by a flowchart with all actions selected for the geotechnical risk care. The plan was developed based on directions set in ASME B31.8S Code, together with Brazilian, Italian and Canadian experiences.

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