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会议名称:

Pipeline pigging and integrity management conference

召开年:

2017

召开地:

Houston, TX

会议文集:

29th pipeline pigging and integrity management conference: 29th pipeline pigging and integrity management conference, March 1-2 2017, Houston, Texas, USA

主办单位:

Tiratsoo technical Clarion Technical Conferences

出版时间:

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197条结果 1/10
  • 题名 作者 来源 发表时间 操作
  • Keynote address: 30 years -technology, materials, and integrity looking back and into the future

    作者:Simon Webster; 会议名称:Pipeline pigging and integrity management conference 2018年

    1. How our lives have changed. 2. Pipeline pigging/inspection transformation. 3. Changes in regulations for ILI and mileage inspected. 4. US pipeline safety incident trends. 5. Current pipeline pigging practice and challenges. 6. Opportunities to modernize and transform. 7. What we need to do differently.

    关键字:

  • Keynote address: 30 years -technology, materials, and integrity looking back and into the future

    Simon Webster;

    Pipeline pigging and integrity management conference

    2018年

  • Analysis of ILI vendor performance on Enable Midstream's pipeline system

    作者:Joel Anderson; 会议名称:Pipeline pigging and integrity management conference 2018年

    With all the vendors in a common sample, there is no bias to over or undercalling anomalies. This indicates that there is no expectation that our ILI program is biased to one direction or the other as a whole. However, at the more granular vendor and diameter specific level, differences are evident. This could be because of the division of the samples into subgroups will increase the variance due to the reduced effective sample size. Most of the vendors' distribution of error is roughly centered around zero but some of them showed a bias to over or undercalling anomalies. Vendor C has a disproportionate number of overcalls and Vendors E and F undercalls. While overcalls are conservative, they can trigger unnecessary excavations; diverting resources from other efforts. Vendor A's error distribution is roughly centered around zero but there are significant number of negative outliers that are evident in Figure 3. Reviewing the percentage of calls that are within-specification, the data exhibits a noticeably less proportion of in-specification than would be predicted based on advertised tool tolerances. The average within tolerance performance of all vendors combined is about 69% of the time vs. the 80% vendor specification.

    关键字:

  • Analysis of ILI vendor performance on Enable Midstream's pipeline system

    Joel Anderson;

    Pipeline pigging and integrity management conference

    2018年

  • Identification of a unique geometry that contributed to pipeline ratcheting: numerical and metallurgical findings

    作者:David B. Futch;Melanie Sarzynski;Brent A. Vyvial; 会议名称:Pipeline pigging and integrity management conference 2018年

    Based on the metallurgical and numerical analyses completed during this work, it was concluded that the sample contained deformation (wrinkles) that was observed at multiple circumferential orientations around approximately 270° of the pipe. All the observed cracks, located at the peaks and valleys of the wrinkles, consisted of shear failures as the crack propagated at a 45° orientation. SEM analysis confirmed that the fracture surface present at the through-wall leak was consistent with ductile overload. The areas of cracking correlated with to the areas of high stress and plastic deformation in the FEA models under applied axial tension, internal pressure, or combined loading. However, the maximum strain was 4.7%, which is not believed to be high enough to represent a single overload event. This analysis demonstrated that an accumulation of plastic strain (ratcheting) is possible at the observed areas of internal surface cracking due to repeated internal pressure cycles. The complex geometry of the wrinkled region is indicated as the primary reason for the ratcheting behavior, where interaction between the adjacent wrinkles created a scenario where the stresses on the surface of the defect could alternate between tensile and compressive yielding during unloading and loading. While the analysis only demonstrated ratcheting behavior on the internal surface, the possibility exists that ratcheting occurred on the external surface. The formation of a crack on the inner surface would redistribute the strains and likely change the behavior at the external surface.

    关键字:

  • Identification of a unique geometry that contributed to pipeline ratcheting: numerical and metallurgical findings

    David B. Futch;Melanie Sarzynski;Brent A. Vyvial;

    Pipeline pigging and integrity management conference

    2018年

  • Key Differences of Integrity Management Regulations and Recommended Practices for Hazardous Liquids versus Gas Pipelines

    作者:Andy Lutz;Satish Pabba; 会议名称:Pipeline pigging and integrity management conference 2018年

    1. Consequence is used in calculating risk of a pipeline 2. HCAs are areas where release of a product can lead to adverse consequences 3. Regulations requires each operator to identify HCAs 4. Operator uses this information to prioritize 5. Inspections 6. Analysis 7. Maintenance of pipeline segments.

    关键字:

  • Key Differences of Integrity Management Regulations and Recommended Practices for Hazardous Liquids versus Gas Pipelines

    Andy Lutz;Satish Pabba;

    Pipeline pigging and integrity management conference

    2018年

  • Asset-specific mechanical properties from in-ditch pipeline inspection

    作者:S. D. Palkovic;K. Taniguchi;S. C. Bellemare; 会议名称:Pipeline pigging and integrity management conference 2018年

    PIPELINE LIFE EXTENSION through condition assessment and integrity management relies on the availability of material specification and construction records as well as data from inspection surveys. For corrosion, minimum wall thickness criteria are based on operating pressure, nominal pipe wall thickness and pipe grade. For stress corrosion cracking and fatigue, assessing the risk of a large rupture relies in part on asset-specific material fracture toughness data. Significant progress has been made regarding the measurement and assessment of pipe geometry and material anomalies for these fitness for service evaluation. However, the determination of the maximum allowable operating pressure and maximum allowable flaw size for existing assets can be improved through in-the-ditch testing methods for mechanical properties. This paper describes two mechanical testing methods recently developed and implemented for nondestructive testing of vintage pipeline steel. In the first method, hard blunt styluses of different geometries slide over the pipe surface at constant loads to measure material hardness. The hardness values for dissimilar styluses are input into predictive equations to determine the yield strength and ultimate tensile strength of the steel. When performed over longitudinal seams or girth welds, the tests identify the heat treatment including normalization which enhances the toughness of the steel. In the second method, the instrument is equipped with a wedged-shaped stylus that includes an opening, or stretch passage, where material is locally subjected to tension that results in microvoid growth and coalescence. This material response matches observations from laboratory ductile fracture tests, and is correlated with the fracture toughness through measurements of the crack tip opening displacement on features of the fracture surface that remains on the sample after testing. Ongoing field testing and third-party validation provide examples of application and performance of the methods.

    关键字:

  • Asset-specific mechanical properties from in-ditch pipeline inspection

    S. D. Palkovic;K. Taniguchi;S. C. Bellemare;

    Pipeline pigging and integrity management conference

    2018年

  • Safe criterion for eliminating SCC by metal removal

    作者:Ting Ma;Michael Rosenfeld; 会议名称:Pipeline pigging and integrity management conference 2018年

    The partially ground-out SCC resembles the CIC flaw geometry. According to a limited study in the public domain, the transition from crack-like to corrosion-like behavior occurs at a very late stage in the grinding process, for instance when the ratio of grinding depth to the initial SCC depth approaches 75%. This means that through most of the grinding before completion, the residual SCC behaves like a planar defect rather than like metal loss. That is the reason why the crack-like defect assessment method, such as the Original or Modified Ln-Sec equation, is recommended to evaluate the final metal-removal size rather than the metal loss assessment method originally stated in the ASME B31.8 standard. Starting the grinding process at the deepest portion of the SCC colony and going to full depth for removal over a limited length, followed by smoothing the contour toward the ends of the SCC colony may provide greater safety than starting the grind at the ends and working toward the center or attempting to remove metal uniformly along the colony length because bulging and crack-opening is minimized. According to NACE0204-2008, densely spaced cracks in clusters are less of an integrity concern than sparsely spaced cracks, due to a tendency of adjacent cracks to relieve tensile stresses at the tips of nearby cracks. In either case, for the multiple-crack colony, the grinding sequence may be more essential than is the case with a single crack, as a result of greater compliance and crack tip opening. The current safe record may be attributed to several factors: (1) most operators take a 20% reduction from operating pressure before grinding; (2) the SCC colony has some residual strength due to the small ligaments between individual cracks caused by branching and misalignment, which is not taken into account when using its overall size to predict the failure; (3) most pipe is stronger than its specified minimum strength; (4) most pipe has toughness high enough to behave in a ductile manner at the operating temperature; (5) initial SCC size is probably not critical at the time, thus the completed grinding size produces a failure pressure much greater than the operating pressure. Nevertheless, a 20% operating pressure reduction may not always be adequate for low operating stress and/or low toughness pipe. Conventional corrosion burst pressure models, such as Modified ASME B31G, RSTRENG, DNV RP F101, and Shell92, have never explicitly defined the lateral width extent as a parameter in the analysis or as being subject to limitation. Historical evidence of successful application of those models in the pipeline industry has validated the fact that the width dimension has no significant effect on the failure pressure. However, to what degree the width of metal loss impacts the burst pressure of the CIC defect needs to be further investigated. Recently PRCI funded a project titled SCC-6-4, "Assessment of Fitness-for-Service for Crack-in-Corrosion Defects". It represents a holistic scope to assess the CIC defect and predict its failure pressure through both full scale burst tests and numerical FEA. The sensitivity to the CIC configuration, such as length, depth and width of metal loss, length and depth of crack, and pipe material properties are being investigated. Until that work is finalized, it is recommended to maintain width and length of metal removal by grinding to the minimum necessary to assure removal of the SCC. In particular, operators are cautioned to avoid interlinking individual non-inter acting cracks to be a larger single crack or interacting cracks before the grinding is completed, and to consider a metal removal sequence initiated at the colony center working outward.

    关键字:

  • Safe criterion for eliminating SCC by metal removal

    Ting Ma;Michael Rosenfeld;

    Pipeline pigging and integrity management conference

    2018年

  • Composite technology in new pipeline construction delivers the safety and reliability to meet tomorrow's standards

    作者:Matthew Boucher;Buddy Powers;Bart Davis; 会议名称:Pipeline pigging and integrity management conference 2018年

    HDD-installed and steel cased pipelines transport hazardous materials under our nations most populated regions and beneath our most environmentally sensitive lands. With limited access and repair options, these buried pipelines must maintain full operational integrity for their intended lifetimes. The oil and gas industry has turned to the documented strength and longevity of pipeline rehabilitation composites for solutions to the unique problems these lines encounter in their battle with corrosion. Derivative composite technology used in the construction and installation phase helps to ensure that these critical pipelines operate free from corrosion induced incidents.

    关键字:

  • Composite technology in new pipeline construction delivers the safety and reliability to meet tomorrow's standards

    Matthew Boucher;Buddy Powers;Bart Davis;

    Pipeline pigging and integrity management conference

    2018年

  • Modeling pipeline metal loss defects at tool speed

    作者:Matthew Romney;Adrian Belanger; 会议名称:Pipeline pigging and integrity management conference 2018年

    The ability to accurately model defect field responses using 3D computer-based models has been shown and can be reliably used to make tool performance and/or defect response predictions. Accurate computer-based model generation requires a significant investment of setup time. It's critical that all boundary conditions and error sources are well understood and accounted for. Further, the limitation of the simulation analysis itself must be well understood. These analyses indicated the computer-based model can produce ±20 Gauss accuracy to pull test data at speed, when properly executed. The significant benefit of the computer-based model data, in conjunction with pull test validation, is the ability to quickly iterate across multiple defect and ILI tool design variables at a time. The sensor spacing analyses produced data that was leveraged to determine the optimal sensor spacing and sample rate for MFL ILI data collection. Further the liftoff analysis data was employed to develop limits around the optimal sensor placement. Similar analysis, if completed without the use of computer-based modeling techniques, would prove to be very expensive and time consuming. Another major outcome of the computer-based modeling process development was the ability to dive deep into the ILI tool design parameter analysis. Beyond identification of the optimal sensor placement, computer-based models were used to analyze the effects of changes to additional ILI tool design parameters. Finally, properly generated computer-based model data can be used to augment the analysis of in-ditch verification data and ILI tool data. Even for slight over-speed conditions, the simulation analyses can be leveraged to predict MFL field response. The expectation is to continue to incorporate actual defect profilometry data into custom built computer-based models. These analyses will continue to provide insight on how to further improve defect classification and sizing model accuracy.

    关键字:

  • Modeling pipeline metal loss defects at tool speed

    Matthew Romney;Adrian Belanger;

    Pipeline pigging and integrity management conference

    2018年

  • Statistical approaches for assessment of ILI data -two case studies

    作者:Puneet Agarwal; 会议名称:Pipeline pigging and integrity management conference 2018年

    IN-LINE INSPECTION (ILI) of pipelines is an essential part of integrity management programs. ILI tools can provide sizes (i.e., depths and length) of cracks / wall loss features and can also characterize the type of features. Each ILI tool works within a certainty, or uncertainty, which is defined by the tool specification. Detailed assessment of a few features called out by the ILI is also performed by more detailed non-destructive examination (NDE) of excavated segments of pipelines. While NDE data is typically more accurate than ILI, only a limited number of excavations or digs can be practically performed.

    关键字:

  • Statistical approaches for assessment of ILI data -two case studies

    Puneet Agarwal;

    Pipeline pigging and integrity management conference

    2018年

  • Assessing repeat ILI data using signal-to-signal comparison techniques

    作者:Jane Dawson;Geoff Hurd; 会议名称:Pipeline pigging and integrity management conference 2018年

    FOR PIPELINES WITH successive ILI runs the detected population of corrosion defects can be compared to identify both internal and external corrosion growth. Depending on the number of defects to be compared, the assessment can demand significant effort and expertise to ensure accurate and meaningful correlations between often very large ILI data sets. Specialist ILI comparison software facilitates efficient and accurate signal-to-signal matching and the determination of defect specific growth rates across very high defect populations. However, since ILI as a measuring technique is subject to inherent uncertainties, the prediction of where corrosion is active and the rate of growth from consecutive ILI runs also has a degree of uncertainty. The level of uncertainty is influenced by several sources of error: a. The ability to accurately match the metal loss sites between the two ILI data sets b. Identification of measurement bias associated with the ILI tools c. Understanding the repeatability errors between the two ILI tools There are various approaches that are used to compensate for these inherent errors. For instance, there are different ILI data matching methods that can be used and depending on the level of precision employed and the input data available these will result in varying levels of accuracy. We state signal-to-signal matching is the most precise and accurate approach that can be used over other methods such as box matching, but is there a common understanding of what "signal-to-signal matching" means, what information is required to perform it, what are the ways it can be done and the relative merits? This paper focuses on these questions in relation to comparing magnetic ILI tool data and looks at the challenges for signal matching across magnetic ILI tools with differing resolutions and even from different vendors. In addition, we discuss the importance of understanding tool bias and repeatability and minimizing the impact of these errors.

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  • Assessing repeat ILI data using signal-to-signal comparison techniques

    Jane Dawson;Geoff Hurd;

    Pipeline pigging and integrity management conference

    2018年

  • Small diameter tools for low flow and low pressure environments

    作者:Tod Barker; 会议名称:Pipeline pigging and integrity management conference 2018年

    Innovative MFL tool design can reduce tool drag force significantly through air coupled magnetizers and supporting the bodies of the tool with steel brushes instead of polyurethane cups. The TDW low drag tools provide a solution to gather high quality in-line inspection data at pressures as low as 5.17 bar (75 psi). The conditions experienced and presented in this paper are not conducive to traditional MFL technology tools due to the typical high forces required to overcome the drag of the traditional brush magnetizer 4 inch (114.3mm) and 6 inch (168.3mm) MFL tools. Although speed excursions occur in compressible product lines with TDW's low drag tools, they are not of the magnitude or duration of those experienced with traditional MFL tools.

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  • Small diameter tools for low flow and low pressure environments

    Tod Barker;

    Pipeline pigging and integrity management conference

    2018年

  • A probabilistic method for prioritizing repairs following an ILI crack tool run

    作者:Ted Anderson;Jim Andrew;Jason Moritz; 会议名称:Pipeline pigging and integrity management conference 2018年

    Following an ILI crack tool run, the operator must make decisions on digs and repairs. The traditional approach entails ranking flaws by means of deterministic burst pressure calculations. Some operators have begun to incorporate probabilistic methods into their decision process, but burst pressure is still the primary criterion. Aside from the fact that traditional pipeline fracture models contain severe modeling errors, ranking by burst pressure is not optimal when the line is subject to significant pressure cycling. The indications that pose the biggest threat may not be the largest flaws. Moderately-sized flaws near a pumping station discharge may fail sooner than larger flaws further downstream. The probabilistic framework presented herein provides a rational basis for prioritizing repairs following an ILI tool run. The model accounts for uncertainty in flaw dimensions and material properties. It also considers the pressure cycling at each flaw location, as well as time-dependent damage due to the initiation of fatigue cracks at seam weld flaws.

    关键字:

  • A probabilistic method for prioritizing repairs following an ILI crack tool run

    Ted Anderson;Jim Andrew;Jason Moritz;

    Pipeline pigging and integrity management conference

    2018年

  • Assessment of pipeline crack and crack-like colonies: a case study

    作者:Jonathan Hardy;Mike Kirkwood; 会议名称:Pipeline pigging and integrity management conference 2018年

    The operator required an ILI to assess the integrity of a 10-inch gas transmission pipeline and prepare it for an increased MAOP. MDS and EMAT ILI tools were run and their inspection reports were delivered to the operator. As a case study, TDW performed an additional crack severity analysis utilizing Battelle's crack assessment software for the following reasons: a. Assess the value in the results of the ILI runs b. Evaluate crack assessment software c. Validate internal capabilities d. Add value to the preliminary EMAT report The crack assessment on the preliminary linear indication report from the EMAT run results provided the operator with additional information for prioritizing preliminary digs and understanding the potential level of effort for their future repair, replace and maintenance efforts. As a solution to the lack of information on the pipeline's toughness in the locations of the linear indications at the time, the crack assessment was performed with a range of CVNs to study the effect it had on prioritization and to present to the operator for toughness verification. Utilizing the multiple technologies in the MDS and EMAT tools provided additional insight into feature discrimination and linear indication associations for the operator to use alongside the crack assessment. ILI technology is advancing to provide more data for each foot of the pipeline and more insight into the associated integrity risks, such as interactive threats. As ILI tool technology advances, the assessment methods and tools must advance to utilize the additional data.

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  • Assessment of pipeline crack and crack-like colonies: a case study

    Jonathan Hardy;Mike Kirkwood;

    Pipeline pigging and integrity management conference

    2018年

  • Is the Paris fatigue crack growth relation the only model appropriate for pressure cycle fatigue analysis of pipelines?

    作者:Sergio Limon;Robert Pilarczyk; 会议名称:Pipeline pigging and integrity management conference 2018年

    The remaining fatigue life for existing cracks in pipelines driven by cyclic operational pressures can be reasonably predicted by applying an appropriate fatigue crack growth model supported by engineering Fracture Mechanics principles and experimental fatigue crack growth data. Fatigue crack growth modeling is generally derived from standardized fatigue testing of samples taken from the material and structure of interest and subjected to constant amplitude loading. However, the cyclic stresses experienced by energy pipelines is rarely simple as evidenced by the fluctuating pressure ranges, variable mean stress and frequencies making the fatigue crack growth analysis challenging to model. The similitude principle, if applicable, can be used to predict the growth rate of cracks for a given applied AK, under similar conditions. Similar to the aging fleets in the aerospace industry, the infrastructure in the pipeline industry continues to age, resulting in increased maintenance costs and a catalyst to further increase the accuracy of analytical predictions. Fatigue crack growth models, discussed herein, are one opportunity to refine inspection requirements and possibly alleviate unnecessary inspections. To demonstrate the impact of various fatigue crack growth models on remaining life predictions and inspection intervals, a case study was completed for a typical pipeline analysis condition. This case study demonstrated significant life improvement factors when considering the influences of stress ratio, threshold, and fast fracture crack growth behavior. Therefore, the choice of a fatigue crack growth model directly affects the final fatigue life prediction of pipelines with cracks and the determination of the next integrity assessment interval. The sources of fatigue crack growth data taken from energy pipelines test samples is limited. However, care must be exercised when using fatigue crack growth data published in the open literature and obtained from similar materials and external environments to ensure the material type, environmental conditions, loading sequence closely resemble the conditions of the pipeline being evaluated. With that said, characterizing the material properties of your pipeline segments, with careful consideration for the appropriate material model, can result in significant increases in the next integrity assessment interval, decreasing maintenance burdens.

    关键字:

  • Is the Paris fatigue crack growth relation the only model appropriate for pressure cycle fatigue analysis of pipelines?

    Sergio Limon;Robert Pilarczyk;

    Pipeline pigging and integrity management conference

    2018年

  • Repair sleeves - steel or composite?

    作者:Jerry Rau;Shawn Laughlin; 会议名称:Pipeline pigging and integrity management conference 2018年

    When considering the cost of various repair options, both material cost and cost of installation need to be considered. Mobilization cost and the application cost of steel sleeves may be highly variable, depending upon availability and labor rates for welding personnel. While the mobilization cost for composite repair installation may be less in some cases, the materials are more expensive. Composite sleeves or wet layup composite repair kits are typically designed for a standard, fixed length.

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  • Repair sleeves - steel or composite?

    Jerry Rau;Shawn Laughlin;

    Pipeline pigging and integrity management conference

    2018年

  • Utilizing consecutive in-line inspections to monitor corrosion growth underneath composite repair applications

    作者:Kevin Spencer;Kevin Seaman; 会议名称:Pipeline pigging and integrity management conference 2018年

    Composite sleeves are an acceptable repair method for external corrosion. The advantages of composite sleeves include that overall costs are cheaper, they are easier to handle, quicker to install, do not corrode and no welding of the pipe is required. As with any repair, the pipeline operator should ensure that reliable engineering tests and analysis show the repair can permanently restore the serviceability of the pipe. Although considered easy to install, the manufacturer's instructions should carefully be followed during installation. When used to repair external corrosion an incorrect installation can lead to continued corrosion growth, which if left unchecked could lead to pipeline failure of the previously repaired area. As part of the continued integrity management cycle, previously installed composite repairs can be monitored in ILI inspections to observe any change in the repairs and potential incorrect installations. This paper has shown a practical application of this methodology which successfully identified a composite sleeve repair showing evidence of corrosion growth. The repair was excavated and the ILI results confirmed and the results were used to identify an improved installation practice.

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  • Utilizing consecutive in-line inspections to monitor corrosion growth underneath composite repair applications

    Kevin Spencer;Kevin Seaman;

    Pipeline pigging and integrity management conference

    2018年

  • Considerations and methodology for seam integrity analysis

    作者:Ramsey Hilton; 会议名称:Pipeline pigging and integrity management conference 2018年

    Kiefner and Associates, Inc. performs a wide range of analyses for seam integrity assessment. These include, but are not limited to the following: a. Pressure cycle fatigue analyses, b. Seam weld assessment prioritization studies, c. Selective seam weld corrosion susceptibility studies, d. Seam failure analyses, and e. Assessment/remediation planning (ILI or hydrostatic testing). Historically, pipeline failures are known to originate in the longitudinal seam weld including those caused by manufacturing defects and relatively low toughness. This has changed in the modern era, as more stringent nondestructive inspection requirements have been imposed on manufacturers for both the pipe body and the seam. Each type of seam is subject to different challenges and potential modes of failure. In addition to the seam type, the pipe vintage and manufacturing process are also important factors when determining susceptibility to seam failure. A pressure cycle fatigue analysis with a conservative time to failure estimate is an available service by Kiefner. The analysis involves an examination of the pipeline history, operation and material property inputs. Throughout the lifetime of the company, Kiefner has used proprietary software to determine conservative estimates for the seam fatigue life of pipelines. This software has evolved significantly over the last 25 years. For large pipeline systems (such as cross country systems with variable pipe types and well documented data) this software is now coupled with a screening tool that delivers reliable analyses of thousands of pipe segments simultaneously. Additionally, the application of a probabilistic approach to fatigue life has been developed.

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  • Considerations and methodology for seam integrity analysis

    Ramsey Hilton;

    Pipeline pigging and integrity management conference

    2018年

  • Quantification of uncertainty in input variables to understand the variance in fitness-for-service assessments

    作者:Bruce A. Young;Jennifer M. O'Brian;Mitchel A. Doerzbacher; 会议名称:Pipeline pigging and integrity management conference 2018年

    PIPELINE FITNESS-FOR-SERVICE (FFS) assessments per API 579, BS 7910, and similar models are typically executed deterministically, which assumes all inputs for the calculation are precisely known or constituted in a way that they are considered conservative (e.g. low Charpy values, low strength values, larger-than-reported cracks). While this approach may provide conservative results with a deterministic safety factor, the results are dependent upon the amount of conservatism assumed in the inputs without regard to their statistical distributions. There is no relation between the calculated safety margin and the probability of failure. In addition, the uncertainty of the input variables remains unquantified with the rank of the most influential inputs on the results undetermined. Understanding these critical relationships of the "input uncertainties" to "output variance" provides opportunities to improve both critical FFS assessments as well as repair, replace, and maintain asset decisions.

    关键字:

  • Quantification of uncertainty in input variables to understand the variance in fitness-for-service assessments

    Bruce A. Young;Jennifer M. O'Brian;Mitchel A. Doerzbacher;

    Pipeline pigging and integrity management conference

    2018年

  • Observations from ILI false-positives

    作者:Matthew Ellinger; 会议名称:Pipeline pigging and integrity management conference 2018年

    In-line inspection (ILI) response can be an expensive program, but one that can have a great benefit to the integrity of pipeline assets. As it can be so costly, it is imperative that all direct examination efforts in response to ILI findings be as beneficial as possible. Excavation of ILI false-positives (i.e., a metal loss anomaly is detected and reported by the ILI, yet upon excavation, no metal loss anomaly is found) can negatively impact the benefits of ILI response programs.

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  • Observations from ILI false-positives

    Matthew Ellinger;

    Pipeline pigging and integrity management conference

    2018年

  • The Development of In-situ Test Spools for Assessing the Performance of In-line Inspection Tools During Pipeline Inspections

    作者:Matt Krieg; 会议名称:Pipeline pigging and integrity management conference 2018年

    1. Introduction & Background 2. Program Objective and Methodology 3. Layout Design 4. Statistical Methodology 5. Manufacturing 6. Results 7. Implementation / Discussion 8. Path Forward / Continuing Efforts.

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  • The Development of In-situ Test Spools for Assessing the Performance of In-line Inspection Tools During Pipeline Inspections

    Matt Krieg;

    Pipeline pigging and integrity management conference

    2018年

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(1)把外文文献以公共方式提供给非授权用户使用;

(2)利用外文文献对非授权用户提供文献服务;

(3)利用外文文献进行商业服务或支持商业服务;

(4)利用外文文献内容汇编生成二次产品,提供公共或商业服务;

(5)将外文文献使用在任何其他网站或计算机联网环境中,包括但不仅限于在国际互联网和万维网站上。

4.侵权责任

授权用户应在法律规定的其超出合理使用范围内使用本平台提供的文献,若因授权用户的侵权使用行为被相关权利人主张权利而产生任何纠纷、仲裁、诉讼,或遭到国家相关部门处理,由授权用户承担全部法律责任并使本平台方免责,授权用户还应赔偿因上述原因给本平台方造成的全部直接和间接损失,包括但不限于律师费用、诉讼及仲裁费用、财务费用及差旅费等。一经发现用户的使用情况超出著作权法规定的合理使用范围,本平台有权立即封禁该用户的服务账户,并有权终止向用户提供本协议约定的服务而无须承担违约责任。

5.免责声明

(1)本平台仅为根据您的搜索指令提供搜索服务、数据链接服务和电子邮件原文传递服务,搜索结果和原文数据均来自第三方网站,六维联合不会对第三方网站内容作任何实质性的编辑、整理、修改;

(2)本平台对服务及服务所涉文献信息不作任何明示或暗示的保证,包括但不限于服务一定会满足用户的使用要求、服务的及时性、持续性、安全性、准确性以及服务所涉及文献的准确性、完整行、可靠性;

(3)本平台不保证所提供的服务和服务所涉文献信息来源客观准确,对于任何因信赖或使用获取的文献信息,而给用户造成任何直接或间接损失,本平台均不承担责任;本平台不因用户与任何第三方产生的争议或诉讼承担任何责任。

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6.其他规定

(1)本协议内容受中华人民共和国法律的约束。如果本协议中任何规定被裁定为无效或不可强制执行,该项规定应被撤销,而其余规定继续有效。

(2)本协议的最终解释权归六维联合。

(3)本协议条款可由六维联合随时全部或部分转让。未经六维联合事先明确书面同意,用户不得以任何方式转让本协议条款。

注意:六维联合未就您或其他人士的某项违约行为采取行动,并不表明六维联合就任何继后或类似的违约事件放弃采取行动的权利。


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