specifying fracture toughness ranks high in line pipe

Ductile fracture arrest in gas pipelines (Book) OSTI.GOV

@article{osti_7014528, title = {Ductile fracture arrest in gas pipelines}, author = {Maxey, W A and Kiefner, J F and Eiber, R J}, abstractNote = {An A.G.A.-sponsored Battelle Columbus Laboratories study establishes guidelines for specifying the material properties necessary for the control of ductile fracture propagation. Formulas developed for specifications for normal pipeline design Evaluation of the Lowest Temperature for Ductile Crack Dec 01, 2016 · Since then it has been extended to; low and high strength line-pipe steel base metals (oil/gas industry), blunt flaws as well as sharp cracks, girth welds for the oil/gas industry, fracture of pipe fittings/valves, and is the technical basis for the lowest temperature for ductile crack initiation in ferritic piping in Appendix C of ASME Section XI.

FRACTURE PROPAGATION1:Fracture-arrest prediction

  • BackgroundPropagation FactorsSurrounding MaterialX70 PredictionsReferencesThe AuthorFracture Control in Carbon Dioxide Pipelines:The Effect Jun 29, 2009 · Long running fractures in CO 2 pipelines may be preventable by specifying a line pipe steel toughness that ensures that the arrest pressure is greater than the saturation pressure or by using mechanical crack arrestors. The preferred choice is control through steel toughness because it assures shorter fracture lengths. Federal Register Vol. No. Wednesday,. April 23, 1986 5LX (High-Test Line Pipe). In Part 192, each specification is included among "listed specifications" which must be followed in pipe manufacture to qualify steel pipe for use in gas pipelines. In Part 195, the specifications serve to denote allowable design factors for steel pipe. Under both parts the specifications Fracture Toughness of High-Strength Steels at Low The specimens that had the highest toughness at room temperature also had the highest toughness at -65°F (-54°C). Available fracture toughness data at low temperature for other alloy steels:AISI 4340, 300M, HP9-4-20, HP9-4-25, and 18 Ni (200) maraging steel usually have the trend of decreasing toughness as the testing temperature is decreased.

    Fracture and Fatigue Control in Steel Structures

    high speeds {crack speeds as high as 7,000 fps or possibly more). The fracture is usully characterized by a flat fracture Is it necessary to specify notch toughness for the steels and weldments used in a particular Battelle DWTT test was developed to relate the fracture appearance of line-pipe III.1 Hydrogen Embrittlement of Structural Steelsthresholds of line pipe steels in high-pressure hydrogen gas, emphasizing welds. Efficiently specifying pipeline dimensions such as wall thickness also affects pipeline cost through the quantity has extremely low fracture toughness. The consequence of ISO 11673:2005(en), Unplasticized poly(vinyl chloride The fracture toughness of the pipe is likely to be at its minimum value at this section. The fracture toughness of the pipe is then obtained by subjecting a pre-notched C-ring test piece to a flexural stress across a notch, which has been introduced at the point where the fracture toughness value is likely to be at its lowest value (as

    Predicting the fracture initiation transition temperature

    Predicting the fracture initiation transition temperature in high toughness, low transition temperature line pipe with the COD test Steels for Cryogenic and Low-Temperature Service ::Total The material combination of high strength, good toughness, and weldability should prompt designers to specify it for welded pressure vessels for the storage of cryogens. Steels for Low-Temperature When designing low-temperature systems or equipment, the engineer finds that notch toughness ranks high in importance, because a part or structure will generally fail due to a notch or other stress concentration.The Specifications Dilemma Posed by Ultra High Toughness Nov 10, 2016 · Leis, BN, Gray, JM, & Barbaro, FJ. "The Specifications Dilemma Posed by Ultra High Toughness Line Pipe Steels." Proceedings of the 2016 11th International Pipeline Assuming that the arrest requirements can be reliably predicted it remains to specify the steel design, and ensure fracture control can be affected through the MPS and