Proceedings of the ... International Conference on Offshore Mechanics and Arctic Engineering, Volume 15, Part 5American Society of Mechanical Engineers, 1996 - Arctic regions |
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Page 165
... impact energy of the trawl board and , in particular , the part of the impact energy absorbed by the pipe shell . Thereby unnecessary conservatism can be avoided in the design of pipeline impact protection . The method accounts for ...
... impact energy of the trawl board and , in particular , the part of the impact energy absorbed by the pipe shell . Thereby unnecessary conservatism can be avoided in the design of pipeline impact protection . The method accounts for ...
Page 166
... impact interaction . Typical parameters are given below and shown in Fig . 6 ( Karlsen , 1988 ) : Angle between trawl board plane and the direction of velocity : • Maximum angle with the vertical : • Tilt angle THE IMPACT 25-35 deg . 10 ...
... impact interaction . Typical parameters are given below and shown in Fig . 6 ( Karlsen , 1988 ) : Angle between trawl board plane and the direction of velocity : • Maximum angle with the vertical : • Tilt angle THE IMPACT 25-35 deg . 10 ...
Page 168
... impact point ( on the trawl board ) has no velocity component in the normal direction . The system described above and shown in Fig . 9 has been formulated ... impact point location during the impact . For calculations of trawl impact 168.
... impact point ( on the trawl board ) has no velocity component in the normal direction . The system described above and shown in Fig . 9 has been formulated ... impact point location during the impact . For calculations of trawl impact 168.
Contents
TROLL PIPELINE PROJECT | 1 |
SAFETY | 3 |
VOLUME IB OFFSHORE TECHNOLOGY | 4 |
Copyright | |
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analysis applied Arctic Engineering ASME assessment axial bending borehole buckling buckling length calculated Castorano configuration construction corrosion curve defects Det Norske Veritas diameter displacement dynamic effect factor failure Fensfjorden Figure fjord flexible pipe flow free span friction GTAW hoop stress horizontal impact installation interaction intervention J-lay Kollsnes landfall lateral counteracts laybarge laying length limit load martensitic material maximum Mechanics and Arctic meter Mongstad movement Norske Shell Norwegian Norwegian Trench Offshore Mechanics offshore pipelines operation parameters performed pipe material pipelay pipeline route Pipeline Technology post-lay pre-lay prebent section pressure pull-in riser rock safety seabed seismic shear strength slope soil spool stability Statoil steel stinger strain strength subsea survey temperature tension trawl board trench Troll Oil Pipeline Troll Phase tunnel vertical vessel wall thickness water depth weight welding yield strength Zeepipe