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 61
... technique and reporting on preliminary work . The technique is applicable to the leak testing of buried land pipelines and particularly to offshore pipelines . Nomenclature a acoustic velocity in liquid filled pipeline ( m / s ) . v ...
... technique and reporting on preliminary work . The technique is applicable to the leak testing of buried land pipelines and particularly to offshore pipelines . Nomenclature a acoustic velocity in liquid filled pipeline ( m / s ) . v ...
Page 63
... technique may be initially interpreted as a leak since pressure is dropping while acoustic velocity is rising and as such is not detrimental to the technique since it cannot mask a leak . at Air which is approximately 0.001 % of the ...
... technique may be initially interpreted as a leak since pressure is dropping while acoustic velocity is rising and as such is not detrimental to the technique since it cannot mask a leak . at Air which is approximately 0.001 % of the ...
Page 65
... technique . Ultrasonic velocity measurement techniques are capable of resolutions to better than 0.001 % . Such techniques are applicable to the low acoustic frequencies envisaged . velocity measurements are required over a period of ...
... technique . Ultrasonic velocity measurement techniques are capable of resolutions to better than 0.001 % . Such techniques are applicable to the low acoustic frequencies envisaged . velocity measurements are required over a period of ...
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