2H Offshore interview questions

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Question how to reduce bending stress in Risers.

What stresses do the Risers experience? like wave load, current load, buckling load

Excel spreadsheet - calculate the wall thickness of a riser assembly - using the beam equation sigma = MI/y and if the stress is in the allowable range then the wall thickness of the pipe is acceptable. The data is given on the Input data sheet and calculations are done in the Calcs sheet. given Data is risers' different components such as upper-stress joints, standard Riser joints, and Lower stress joints. Properties of the different joints such as Outer Diameter, Inner Diameter, wall thickness, and Material yield strength. the new wave and current data are given with wave heights, wave period, and current velocities. The riser is designed for API design codes. Analysis output includes different load cases and the bending moment data along the riser length is given. In the Calculations sheet, you have to summarise the different load cases and draw a bending moment diagram.