Engineering, 13.06.2020 22:57 punkee5375

A single-line steel riser-pipeline system of OD = 7-in is designed for operating pressure of 3000 psig to transport oil (oil = 55 lb/ft3) from a subsea well (at 5000-ft water depth) to a buoyed turret connected to it. It is required to design turret buoyancy tanks volume such that it is 1000-ft below water level when not attached to a vessel. Given the following information: • Seawater density (water = 64 lb/ft3) • Steel density (s = 490 lb/ft3), steel yield strength (65 ksi) • Pipe design SF = 0.6 • Pipe design criteria a = PD/2t, where P is pressure, D ≈ OD, t is wall thickness, a is allowable stress. • Weight of turret and its mooring system Wt ≈ 5000 lb. • Buoyancy force Fb = Volume * water. • Free hanging catenary length ≈ 1.3* water depth • ID = OD-2*t Determine: a) The minimum buoyancy volume required for the turret. b) The required winch tension to bring turret to sea surface while attached to riser-pipeline system.

Answers: 2

Show answers

Other questions on the subject: Engineering

Engineering, 03.07.2019 15:10, theamandawhite

Ahouse has the following electrical appliance usage (1) single 40w lamp used for 4 hours per day (2) single 60w fan used for 12 hours per day (3) single 200w refrigerator that runs 24 hours per day with compressor run 12 hours and off 12 hours find the solar power inverter size in watt with correction factor of 1.25.

Answers: 1

continue

Engineering, 04.07.2019 18:10, ahmedeldyame

Aloaded platform of total mass 500 kg is supported by a dashpot and by a set of springs of effective stiffness 72 kn/m. it is observed that when the platform is depressed through a distance x = 12.5 cm below its equilibrium position and then released without any initial velocity; it reaches its equilibrium position in the shortest possible time without overshoot. find the position and velocity of the loaded platform 0.10 sec. after its release. if a further load of 400 kg is added to the platform, find, i) the frequency of damped vibrations, and i) the amplitude of vibration after 2 complete oscillations, given that the initial amplitude is 15 cm.

Answers: 1

continue

Engineering, 04.07.2019 18:10, colin774

The higher the astm grain size number, the finer the gran is. a)-true b)-false

Answers: 2

continue

Engineering, 04.07.2019 18:10, samanthabutryn

Which one from below is not one of the reasons of planning failures? (clo3) a)-planner is careless. b-planner spend less time in the field but more time on the desk c)-planner is not qualified d)-planner does not have sufficient time to properly plan

Answers: 3

continue

You know the right answer?

A single-line steel riser-pipeline system of OD = 7-in is designed for operating pressure of 3000 ps...