Proceedings of the ... International Conference on Offshore Mechanics and Arctic Engineering, Volume 16, Parts 5-6American Society of Mechanical Engineers, 1997 - Arctic regions |
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Page 238
Allowable Free Span Length for Free Span Length ( m ) ( 1 ) Is the predicted accumulation of fatigue damage. 40 No. of Detected Spans 39 20 50 50 60 30 30 10 10 10 55 55 40 40 50 5 3 1 Year Exposure 25 15 10 2 0-10 10-20 20-30 30-40 40 ...
Allowable Free Span Length for Free Span Length ( m ) ( 1 ) Is the predicted accumulation of fatigue damage. 40 No. of Detected Spans 39 20 50 50 60 30 30 10 10 10 55 55 40 40 50 5 3 1 Year Exposure 25 15 10 2 0-10 10-20 20-30 30-40 40 ...
Page 239
... span is fixed during the lifetime . ( 2 ) Is the accumulation of fatigue damage based on observed free span developments ( 2 ' ) during periodic inspections at times t1 , t , and t ,. In particular at time t , the observed length of the ...
... span is fixed during the lifetime . ( 2 ) Is the accumulation of fatigue damage based on observed free span developments ( 2 ' ) during periodic inspections at times t1 , t , and t ,. In particular at time t , the observed length of the ...
Page 242
... span formation and also overstress in the pipeline . However , it is reasonable to expect , first of all , that developed free spans , if any , will remain exposed to environmental forces for short periods , say 5 years in the worst ...
... span formation and also overstress in the pipeline . However , it is reasonable to expect , first of all , that developed free spans , if any , will remain exposed to environmental forces for short periods , say 5 years in the worst ...
Contents
FREE SPANNING PIPELINEMULTISPAN PROJECTS | 11 |
Design Guideline for Free Spanning Pipelines | 28 |
RELIABILITY DESIGN SUPERB AND DNV96 PROJECTS | 45 |
Copyright | |
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amplitude analysis ASME axial beam bending bending moment bottom boundary calculated characteristics coefficient collapse condition corrosion cross-flow defect deformation density Det Norske Veritas developed diameter displacement dynamic elastic electrodes Engineering equation evaluated experimental fatigue Figure floating airport flow rate fluid force free span function hoop stress horizontal hydrodynamic Hydroelastic impeller in-line VIV incident waves inspection instability region installation interaction Japan large floating structure length limit limit state design linepipe load effects maximum measured Mega-Float meter method mode mooring motion natural frequencies node numerical obtained Offshore parameters phase pipe predicted pressure distribution ratio reduced velocity reliability response safety class safety factors safety levels sand wave seabed simulation Statoil steel strain stress surface Table temperature thickness titanium trawl turbulence two-phase flow uncertainty velocity potential vertical vibration VLFS Vortex Induced Vibrations water depth wave height welding