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Keywords: fatigue
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Proceedings Papers

Proc. ASME. IPC2022, Volume 1: Pipeline Safety Management Systems; Project Management, Design, Construction, and Environmental Issues; Strain-Based Design and Assessment; Risk and Reliability; Emerging Fuels and Greenhouse Gas Emissions, V001T02A001, September 26–30, 2022
Publisher: American Society of Mechanical Engineers
Paper No: IPC2022-86754
... waves (and potential fatigue damage), which sometimes goes unrecognized. To predict the damage accumulation at planar circumferential flaws (e.g., girth weld defects) from repeated hammering, flaw growth analyses were performed via Paris Law fracture mechanics formulations. An initial flaw based on NDE...
Proceedings Papers

Proc. ASME. IPC2022, Volume 1: Pipeline Safety Management Systems; Project Management, Design, Construction, and Environmental Issues; Strain-Based Design and Assessment; Risk and Reliability; Emerging Fuels and Greenhouse Gas Emissions, V001T07A034, September 26–30, 2022
Publisher: American Society of Mechanical Engineers
Paper No: IPC2022-97332
... with refinement and additional validation testing is recommended for future work. Keywords: Crack, Growth, Re-inspection, Fatigue, Probabilistic, Post-Hydrostatic Test, Post ILI, Reliability NOMENCLATURE C CFP DSAW ERW ILI K LRF l m MOP MTTF NDE N PBP PHT POD SAW SMYS SSI TTF Paris law coefficient Cumulative...
Proceedings Papers

Proc. ASME. IPC2022, Volume 2: Pipeline and Facilities Integrity, V002T03A036, September 26–30, 2022
Publisher: American Society of Mechanical Engineers
Paper No: IPC2022-87301
... Abstract Dents in buried pipelines either caused by third party mechanical damage or introduced during pipeline construction remain a leading contributor to reportable pipeline releases. API Recommended Practice 1183 (API RP 1183) provides a modern, shape-based fatigue life assessment...
Proceedings Papers

Proc. ASME. IPC2022, Volume 2: Pipeline and Facilities Integrity, V002T03A039, September 26–30, 2022
Publisher: American Society of Mechanical Engineers
Paper No: IPC2022-87340
... on a literature review and verified by small- and full-scale testing. The product of the work is an assessment tool that identifies SCC cracks that are appropriate for recoating without grinding. recoating grinding fatigue integrity management Proceedings of the 2022 14th International Pipeline...
Proceedings Papers

Proc. ASME. IPC2022, Volume 1: Pipeline Safety Management Systems; Project Management, Design, Construction, and Environmental Issues; Strain-Based Design and Assessment; Risk and Reliability; Emerging Fuels and Greenhouse Gas Emissions, V001T08A006, September 26–30, 2022
Publisher: American Society of Mechanical Engineers
Paper No: IPC2022-87069
... of fracture toughness and fatigue, through embrittlement or hydrogen induced cracking. Fracture toughness as a measure of crack arrest performance through required Charpy (TCVN) performance represents a principal mechanical property requirement of the pipeline. Ductility performance, regardless...
Proceedings Papers

Proc. ASME. IPC2022, Volume 1: Pipeline Safety Management Systems; Project Management, Design, Construction, and Environmental Issues; Strain-Based Design and Assessment; Risk and Reliability; Emerging Fuels and Greenhouse Gas Emissions, V001T08A016, September 26–30, 2022
Publisher: American Society of Mechanical Engineers
Paper No: IPC2022-87359
... of effects including hydrogen embrittlement, increases to fatigue crack growth rate, and reductions in ductility and yield strength when exposed to susceptible steels under stress. These potential effects may vary based on the vintage, strength of steel, weld type, and other specific pipeline characteristics...
Topics: Hydrogen, Testing
Proceedings Papers

Proc. ASME. IPC2020, Volume 3: Operations, Monitoring, and Maintenance; Materials and Joining, V003T05A018, September 28–30, 2020
Publisher: American Society of Mechanical Engineers
Paper No: IPC2020-9404
... Abstract Structural steel mechanical properties of strength and ductility for a given microstructure are predominately driven by the average ferrite grain/packet size and by the through-thickness homogeneity of the ferrite grain/packet size in the final product. Fatigue performance, a ductility...
Proceedings Papers

Proc. ASME. IPC2020, Volume 3: Operations, Monitoring, and Maintenance; Materials and Joining, V003T05A013, September 28–30, 2020
Publisher: American Society of Mechanical Engineers
Paper No: IPC2020-9290
... was to demonstrate restoration of the fatigue life of the pipe to acceptable levels rather than just considering burst pressure. Defects equal to 0.5 times the diameter axially and 0.25 times the diameter radially were machined into the intrados of the bend (the location of highest hoop stress). Wall losses of 20...
Proceedings Papers

Proc. ASME. IPC2020, Volume 3: Operations, Monitoring, and Maintenance; Materials and Joining, V003T05A001, September 28–30, 2020
Publisher: American Society of Mechanical Engineers
Paper No: IPC2020-9248
... and utility. Fully established negligible growth thresholds pave the way toward adoption of next-level fracture mechanics best practice models and tools such as AFGROW and NASGRO, and facilitates crack growth simulations and root-cause analysis. fatigue pipeline crack inspection interval...
Proceedings Papers

Proc. ASME. IPC2020, Volume 1: Pipeline and Facilities Integrity, V001T03A003, September 28–30, 2020
Publisher: American Society of Mechanical Engineers
Paper No: IPC2020-9268
... with rationale for each term is proposed for the pipeline segments examined in the study, and recommendations made for potential implementation for other operators, along with follow-on research. fatigue pipeline crack inspection interval NEAR NEUTRAL PH STRESS CORROSION CRACK GROWTH MODEL...
Proceedings Papers

Proc. ASME. IPC2020, Volume 1: Pipeline and Facilities Integrity, V001T03A029, September 28–30, 2020
Publisher: American Society of Mechanical Engineers
Paper No: IPC2020-9655
... is not expected to fail immediately, however, severe pressure cycles combined with the geometric distortion can cause fatigue crack initiation and growth that can lead to failure. To account for the possibility of fatigue failure, recent changes to pipeline codes, such as CSA Z662, are requiring pipeline...
Proceedings Papers

Proc. ASME. IPC2020, Volume 1: Pipeline and Facilities Integrity, V001T03A022, September 28–30, 2020
Publisher: American Society of Mechanical Engineers
Paper No: IPC2020-9511
... resulted in similar crack growth rates for those waveforms containing low R-ratio cycles. These results imply that stage I of crack growth is assisted by fatigue due to low R-ratio cycles. It was observed that loading/unloading frequency of low R-ratio cycles has a direct relation with crack growth rate...
Proceedings Papers

Proc. ASME. IPC2020, Volume 1: Pipeline and Facilities Integrity, V001T03A032, September 28–30, 2020
Publisher: American Society of Mechanical Engineers
Paper No: IPC2020-9703
... Abstract A safety advisory (2010-01), issued by the National Energy Board (NEB) in June 2010, referenced two incidents which were a result of a fatigue crack failure that occurred within shallow dents [1]. The dents in both instances were less than 6% (of the OD). Currently...
Proceedings Papers

Proc. ASME. IPC2020, Volume 1: Pipeline and Facilities Integrity, V001T03A036, September 28–30, 2020
Publisher: American Society of Mechanical Engineers
Paper No: IPC2020-9781
... of the program involved sectioning features to quantify crack growth levels. Once a systematic process for growing cracks from EDM starter notches had been validated, testing involved cyclic pressure fatigue to failure and burst testing. The advantage with the crack generation methodology used in this study...
Proceedings Papers

Proc. ASME. IPC2020, Volume 1: Pipeline and Facilities Integrity, V001T03A079, September 28–30, 2020
Publisher: American Society of Mechanical Engineers
Paper No: IPC2020-9652
... according to the API 579-1 is presented using FE analysis results. dent ILI data FE analysis fatigue remaining life NUMERICAL ASSESSMENT OF DENTED PIPE USING INLINE INSPECTION DATA Parththeeban Murugathasan1, Ashutosh Sutra Dhar1 1Memorial University of Newfoundland, St. John s, NL, Canada...
Proceedings Papers

Proc. ASME. IPC2004, 2004 International Pipeline Conference, Volumes 1, 2, and 3, 1219-1228, October 4–8, 2004
Publisher: American Society of Mechanical Engineers
Paper No: IPC2004-0254
... life and describe the way forward for the further development and implementation of this approach. Wrinkle Buckle Fatigue Proceedings of IPC 2004 International Pipeline Conference October 4-8, 2004 Calgary, Alberta, Canada IPC04-0254 DEVELOPMENT AND VALIDATION OF A PIPELINE BUCKLE...
Proceedings Papers

Proc. ASME. IPC2004, 2004 International Pipeline Conference, Volumes 1, 2, and 3, 1239-1245, October 4–8, 2004
Publisher: American Society of Mechanical Engineers
Paper No: IPC2004-0437
... spectra, fatigue analysis, validation through dig programs, and the management of these features from a system integrity standpoint. fatigue dent management engineering assessment Copyright © 2004 by ASME Proceedings of IPC 2004 International Pipeline Conference October 4 - 8, 2004 Calgary...
Proceedings Papers

Proc. ASME. IPC2006, Volume 2: Integrity Management; Poster Session; Student Paper Competition, 297-309, September 25–29, 2006
Publisher: American Society of Mechanical Engineers
Paper No: IPC2006-10177
... 07 10 2008 Fatigue life assessment procedures require knowledge of the fatigue crack driving force, such as stress intensity factor range (Δ K ) and cyclic J -integral (Δ J ), for the flaw geometry detected during inspection. Because three-dimensional closed-form crack driving force...