Abstract: Systems and methods for relieving pressure from a subsea transport line are provided. The system can include a vessel having a bottom end that can be at least partially open and in fluid communication with a subsea environment. The vessel can also include one or more relief lines each having a first end and a second end. The first end can be coupled to one or more subsea transport lines coupled to one or more subsea production units and the second end can be coupled to a top end of the vessel. The relief line can include one or more pressure relief devices at least partially disposed therein.

Abstract: Systems and methods for relieving pressure from a subsea transport line are provided. The system can include a vessel having a bottom end that can be at least partially open and in fluid communication with a subsea environment. The vessel can also include one or more relief lines each having a first end and a second end. The first end can be coupled to one or more subsea transport lines coupled to one or more subsea production units and the second end can be coupled to a top end of the vessel. The relief line can include one or more pressure relief devices at least partially disposed therein.

Abstract: A pipeline segment 5, used for the manufacture of a thin-walled underwater pipeline 50. Terminal pipe sections 20 are at either end of main pipe section 10. Terminal pipe sections 20 are thick-walled or otherwise resistant to collapse due to external pressure. A pressure isolation device 30 maintains an internal pressure in main pipe section 10 above a shut off pressure. A pressure compensation system 35 can protect main pipe section 10 from collapse due to external pressure. Pipeline segments 5 can be manufactured by connecting and winding stalks 100 onto storage device 110 forming main pipe section 10. Terminal pipe section 20 can be connected to the lead end of main pipe section 10, and main pipe section 10 can be unwound from storage device 110 while towing.