It is aware that the expansion of gas utilization is an important issue to restrict CO2 emission. The reduction of gas transportation cost is essential to increase gas supply to market. The high-pressure gas pipeline with high strength pipes has contributed for safe and economical transportation of natural gas and is expected more for the future demand of gas. The primary objective of high strength line pipe is to hold high pressure safely. The property in circumferential direction under hoop stress is the primary target of the line pipe. High strength and high toughness steel at low temperature has been developed for large diameter line pipes, which have been supplied to major gas pipelines. The increase of D/T of pipelines for transportation efficiency tends to decrease critical compressive strain. Since long distance pipelines come across various ground conditions, the pipeline might encounter some serious ground movement. It is pointed out that in this event the strain by the ground movement might be high enough to deform pipelines to leak or rupture. There are various forms of ground movement, but the Japanese guideline for earthquake resistance and liquefaction is considered as basic conditions for SBD (strain-based design) and for FEA (finite element ananlysis) in this study. The relation between pipe deformation and property in axial direction is investigated to identify the effective parameter to design the steel property for gas pipelines. Metallurgical factors and microstructure can change the parameters not only on strength and toughness, but also on the critical strain of X80 line pipes. It is discussed that the effectiveness of those changes to improve the safe operation of high-pressure gas pipelines with X80 grade line pipe.


    Access

    Access via TIB

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Property of X80 grade SAW pipes for resistance to ground movement


    Additional title:

    Eigenschaften von unterpulvergeschweißten Rohren der Güte X80 hinsichtlich des Widerstandes gegen Erdbodenbewegungen


    Contributors:


    Publication date :

    2008


    Size :

    8 Seiten, 14 Bilder, 4 Tabellen, 12 Quellen



    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




    Evaluation of compressive strain limit of X80 SAW pipes for resistance to ground movement

    Shitamoto, Hidenori / Hamada, Masahiko / Okaguchi, Shuji et al. | Tema Archive | 2010


    Deformation behavior and limit state of high-grade induction bend pipes subjected to large ground deformation

    Mitsuya, Masaki / Hashimoto, Yoshikazu / Sakanoue, Takashi et al. | Tema Archive | 2008


    High strength seamless line pipes up to grade X100

    Schmidt, Tanja / Wintermann, Christina / Wiebe, Jörg et al. | Tema Archive | 2010


    Searching for Plastic Pipes in Ground

    Varyanitza-Roshchupkina, L.A. | Online Contents | 2006


    Airport Ground Movement

    Lobato, Miriam / Carvalho, Filipe / Pereira, Ana Sofia et al. | Springer Verlag | 2015