Proceedings of the ... International Conference on Offshore Mechanics and Arctic Engineering, Volume 10, Part 5American Society of Mechanical Engineers, 1991 - Arctic regions |
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Page 25
... span . A semi - empirical model for the underscouring and free span formation has been developed on the basis of the experiments . INTRODUCTION When a pipeline is going to be placed on an erodible seabed some of the major engineering ...
... span . A semi - empirical model for the underscouring and free span formation has been developed on the basis of the experiments . INTRODUCTION When a pipeline is going to be placed on an erodible seabed some of the major engineering ...
Page 26
... span length is assu- med to occur when the midspan section of the pipeline is about to touch the bottom of the scour hole due to pipeline sagging . Assuming the settlements of the pipeline at the sup- ports ( shoulders ) of the free span ...
... span length is assu- med to occur when the midspan section of the pipeline is about to touch the bottom of the scour hole due to pipeline sagging . Assuming the settlements of the pipeline at the sup- ports ( shoulders ) of the free span ...
Page 28
Free span development and pipe lowering versus time . - Free span development --- : Pipe lowering Roll , P. , Sumer B.M. and Fredsøe , J. SPAN LENGTH ( cm ) 150 100T 8 50 Fig . 3 5 10 15 PIPE LOWERING ( cm ) PIPE LOWERING ( TEST NO . 5 ) ...
Free span development and pipe lowering versus time . - Free span development --- : Pipe lowering Roll , P. , Sumer B.M. and Fredsøe , J. SPAN LENGTH ( cm ) 150 100T 8 50 Fig . 3 5 10 15 PIPE LOWERING ( cm ) PIPE LOWERING ( TEST NO . 5 ) ...
Contents
Design of the Troll Multiphase Transport System | 1 |
Propagation and Diffraction of Cnoidal Waves | 9 |
Dynamic Stresses and Motions of Offshore Pipelines During Laying | 17 |
Copyright | |
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applied axial base metal brazing cables calculated carbon equivalent chemical composition cnoidal waves coating cooling crack curve cycle defects developed dew point temperature diameter dynamic tension force effect electrode equation failure field Figure fitness-for-purpose flaws flow foam forge welding fracture fracture mechanics free span frequency friction welding gas pipeline glycol GMAW Gr.B HAZ hardness heat input hydrocarbon dew point induction heating inner pipe installation insulation J-Lay length line pipe linepipe load material maximum measured mechanical properties method nonlinear offshore pipelines operation parameters pipe material pipe wall pipeline Pipeline Technology ASME plate pressure problem procedure propagation PUFI PWHT reeling S-N curves seam weld simulation Specimen steel stress surface T-cross portion tensile strength thermal thermal insulation toughness tube UOE pipe velocity wall thickness water depth water dew point weld metal X80 grade yield strength