Calculate subsea pipeline submerged weight and specific gravity (DNVGL-ST-F101 section 5.5.5).
To avoid flotation, the specific gravity should be greater than or equal to 1.1 (equivalent to γw = 1.1 in equation 5.37). Select the pipe schedule, pipe diameter and wall thickness, or use the user defined option. The line pipe is the first inside layer. The line pipe wall thickness is either set from the selected schedule value, or taken from the user defined wall thickness. Details for each layer are displayed in the output view at the bottom of the page.
Tool Input
- schdtype : Line Pipe Schedule Type
- diamtype : Line Pipe Diameter Type
- ODu : User Defined Outside Diameter
- IDu : User Defined Inside Diameter
- wtntype : Line Pipe Wall Thickness Type
- tnu : User Defined Wall Thickness
- wltype : Pipe Weight Type
- OODu : User Defined Outer Diameter Including External Coating
- wu : User Defined Submerged Weight
- SGu : User Defined Specific Gravity
- WTi : Pipe Liner Wall Thickness
- ρi : Pipe And Liner Density
- WTo : Pipe Coating Wall Thickness
- ρo : Pipe Coating Density
- ρf : Contents Fluid Density
- ρb : Displaced Fluid Density
Tool Output
- OOD : Pipe Outer Diameter Including Coatings
- SG : Pipe Specific Gravity Relative To Displaced Fluid
- Ws : Pipe Total Weight Per Length Including Contents and Buoyancy