Proceedings of the ... International Conference on Offshore Mechanics and Arctic Engineering, Volume 5American Society of Mechanical Engineers, 1988 - Arctic regions |
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Page 72
... caused by instrument and SCADA failures , including communication outages , are taken into consideration by LEAKSTOP . The severity of the degraded mode depends on the variance caused by the unavailable measurement . All the factors ...
... caused by instrument and SCADA failures , including communication outages , are taken into consideration by LEAKSTOP . The severity of the degraded mode depends on the variance caused by the unavailable measurement . All the factors ...
Page 87
... causes Our problem deals with loading due to subsidence . For a given parametric situation , the initial compressive ... caused by frost : when cold gas is pumped in pipelines passing through thawed ground , significant heaves resulting ...
... causes Our problem deals with loading due to subsidence . For a given parametric situation , the initial compressive ... caused by frost : when cold gas is pumped in pipelines passing through thawed ground , significant heaves resulting ...
Page 92
... caused by the two edges of the trench are completely separate . Between the two , the critical width corresponds to a maximum stress of the pipeline . It is clear that this width is shorter for the flexible line than the rigid line ...
... caused by the two edges of the trench are completely separate . Between the two , the critical width corresponds to a maximum stress of the pipeline . It is clear that this width is shorter for the flexible line than the rigid line ...
Contents
Model Tests | 3 |
B Bryndum V Jacobsen and D T Tsahalis 9 | 21 |
Scour Under Pipelines | 33 |
Copyright | |
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acoustic velocity analysis Arctic Engineering axial behaviour bending bottom boundary layer buckling cable calculated clamp Cobia compression corrosion crack cylinder deflection deformation developed dew point diameter drag drag coefficient effect elastic equation experimental field Figure finite element flow force coefficients free span frequency friction friction welding function hoop stress horizontal Hydraulic hydrodynamic hydrodynamic forces in-line installation irregular waves length lift coefficient lift force liquid load maximum measured mechanical method monitoring movement nodal analysis operating parameters phase pipe displacement pipe material pipeline predicted pressure procedure ratio response riser roughness SCADA scour sea bed sea floor seabed shown simulated slug soil steady current steel storm strain strain gauges stress structural submarine pipelines surface Technology temperature tion Turning Bands underwater values variation vertical vortex shedding water depth welding zone