DNV RP F109 Submarine Pipeline Stability

DNV-RP-F109 has been replaced by DNVGL-RP-F109.

Reference : DNVGL-RP-F109 : On-Bottom Stability Design Of Submarine Pipelines (Download from the DNVGL website)

Change Module :

DNVGL RP F109 Check Value Calculation Module
DNVGL RP F109 Curved Pipeline Laying Calculation Module
DNVGL RP F109 Initial Seabed Penetration Calculation Module
DNVGL RP F109 Piping And Self Burial Calculation Module
DNVGL RP F109 Shields Number Calculation Module
DNVGL RP F109 Submarine Pipeline Stability Calculation Module
DNVGL RP F109 Wave Probability And Return Period Calculation Module
DNVGL RP F109 Wave Seabed Velocity Calculation Module
DNVGL RP F109 Wave Spreading And Directionality Calculation Module
All

[FREE] tools are free in basic mode with no login (no plots, tables, goal seek etc). Login or Open a free account to use the tools in plus mode (with plots, tables, goal seek etc).
[PLUS] tools are free in basic CHECK mode with Login or Open a free account (CHECK values no plots, tables, goal seek etc). Buy a Subscription to use the tools in plus mode (with plots, tables, goal seek etc).
Try plus mode using the Plus Mode Demo tools with no login. Help Using The Pipeng Toolbox (opens in the popup workbook)

Links : ±

CALCULATOR : Three Phase Black Oil Density [FREE] ±

Calculate the density of two phase (oil and water) liquid, single phase gas, or three phase black oil (oil, water and gas). Water cut is measured relative to the total liquid volume (gas volume is ignored). Gas oil ratio (GOR) is measured relative to the oil volume at standard conditions (water volume is ignored).

Tool Input

mvtype : Fluid Density Type
- GORu : User Defined Gas Oil Ratio
- WCu : User Defined Water Cut
- ρu : User Defined Fluid Density
ρo : Oil Density
ρw : Water Density
P : Fluid Pressure
T : Fluid Temperature
Z : Gas Compressibility Factor
SG : Gas Specific Gravity

Tool Output

ρf : Average Fluid Density
ρg : Gas Density
ρl : Liquid Density
GOR : Gas Oil Ratio
WC : Water Cut
Xmg : Gas Mass Fraction
Xml : Liquid Mass Fraction
Xmo : Oil Mass Fraction
Xmw : Water Mass Fraction
Xvg : Gas Volume Fraction
Xvl : Liquid Volume Fraction
Xvo : Oil Volume Fraction
Xvw : Water Volume Fraction
vg : Gas Mole Volume (At T P)

CALCULATOR : DNVGL-RP-F109 Section 3.6 Subsea Pipeline Lateral Static Or Absolute Stability (Multi Layer Pipe) [PLUS] ±

Calculate subsea pipeline absolute lateral stability factor (DNVGL-RP-F109 section 3.6).

For absolute stability the stabillity factor is less than or equal to one. It is assumed that no movement of the pipeline will occur.

Tool Input

classtype : Safety Class
loctype : Pipeline Location
- γscu : User Defined Safety Factor
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
- Wsu : User Defined Submerged Weight
- SGu : User Defined Specific Gravity
- Wsiu : User Defined Installation Submerged Weight
- SGiu : User Defined Installation Specific Gravity
hwtype : Wave Heading Type
- Φwu : User Defined Wave Relative Heading
hctype : Current Heading Type
- Φcu : User Defined Current Relative Heading
sfactype : Shape Factor Type
- sfu : User Defined Spreading Factor
rdtype : Velocity Reduction Factor Type
- Rwu : User Defined Wave Reduction Factor
- Rcu : User Defined Current Reduction Factor
uctype : Current Velocity Type
gatype : Gamma Factor Type
- γu : User Defined Gamma
muttype : Seabed Velocity And Period Type
- Usu : User Defined Seabed Significant Wave Velocity
- Tzu : User Defined Seabed Zero Upcrossing Wave Period
sptype : Wave Sample Period
- Su : User Defined Wave Sample Period
roughtype : Seabed Roughness Type
- zou : User Defined Seabed Roughness
soiltype : Soil Type
- ssu : User Defined Clay Undrained Shear Strength
- γs : User Defined Clay Dry Weight Per Voluime
- γs' : User Defined Sand and Rock Submerged Weight Per Volume
frictype : Pipe Soil Lateral Friction Factor Type
- μu : User Defined Friction Factor
rptype : Soil Permeability Type
ritype : Burial Type
- zpu : User Defined Burial Depth
- zoDu : User Defined Burial Ratio
rttype : Trench Type
- ztu : User Defined Trench Depth
- Θtu : User Defined Trench Angle
WTi : Pipe Liner Wall Thickness
ρi : Pipe And Liner Density
WTo : Pipe Coating Wall Thickness
ρo : Pipe Coating Density
ρd : Operating Contents Fluid Density
ρc : Maximum Contents Fluid Density (Usually Hydrotest)
ρw : Displaced Fluid (Seawater) Density
Ur : Reference Current Velocity
Zr : Reference Height Above Seabed
d : Water Depth
Hs : Wave Significant Height
Tp : Peak Wave Period

Tool Output

Φrc : Relative Current Heading
Φrw : Relative Wave Heading
γ : Gamma Peak Enhancement Factor
γsc : Safety Factor
μ : Pipe Soil Lateral Friction Factor
Cy* : Single Oscillation Horizontal Load Factor
Cz* : Single Oscillation Vertical Load Factor
F/F : Load Over Resistance Ratio
Fr : Passive Resistance
Fy* : Horizontal Load
Fz* : Vertical Load
Kc : Keulegan Carpenter Number
M : Steady To Oscillating Velocity Ratio
OOD : Pipe Outer Diameter Including Coatings
Rdc : Current Velocity Reduction Factor
Rdw : Wave Velocity Reduction Factor
SG : Pipe Specific Gravity Relative To Displaced Fluid
T* : Single Oscillation Zero Upcrossing Period
Tu : Wave Zero Upcrossing Period
Uc* : Reduced Current Velocity
Ur* : Reduced Wave And Current Combined Velocity
Us : Wave Reduced Significant Seabed Velocity
Uw* : Single Oscillation Reduced Wave Velocity
WLp : Pipe Maximum Submerged Weight
Ws : Pipe Total Weight Per Length Including Contents and Buoyancy
ro : Seabed Roughness
ry : Horizontal Force Factor
rz : Vertical Force Factor
sf : Wave Spreading Factor
z/OOD : Penetration Depth Over Diameter Ratio
zp : Soil Penetration Or Burial Depth

CALCULATOR : DNVGL-RP-F109 Section 3.5 Subsea Pipeline Lateral Dynamic Stability (Multi Layer Pipe) [PLUS] ±

Calculate DNVGL-RP-F109 section 3.4.2-3 seabed wave and current velocity from wave period, wave height and current velocity.

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
- Wsu : User Defined Submerged Weight
- SGu : User Defined Specific Gravity
hwtype : Wave Heading Type
- Φwu : User Defined Wave Relative Heading
hctype : Current Heading Type
- Φcu : User Defined Current Relative Heading
sfactype : Shape Factor Type
- sfu : User Defined Spreading Factor
rdtype : Velocity Reduction Factor Type
- Rwu : User Defined Wave Reduction Factor
- Rcu : User Defined Current Reduction Factor
uctype : Current Velocity Type
gatype : Gamma Factor Type
- γu : User Defined Gamma
muttype : Seabed Velocity And Period Type
- Usu : User Defined Seabed Significant Wave Velocity
- Tzu : User Defined Seabed Zero Upcrossing Wave Period
sptype : Wave Sample Period
- Su : User Defined Wave Sample Period
roughtype : Seabed Roughness Type
- zou : User Defined Seabed Roughness
soiltype : Soil Type
- ssu : User Defined Clay Undrained Shear Strength
- γs : User Defined Clay Dry Weight Per Voluime
- γs' : User Defined Sand and Rock Submerged Weight Per Volume
stabtype : Stability Type
- Yu : User Defined Lateral Displacement Ratio
WTi : Pipe Liner Wall Thickness
ρi : Pipe And Liner Density
WTo : Pipe Coating Wall Thickness
ρo : Pipe Coating Density
ρc : Operating Contents Fluid Density
ρd : Displaced Fluid (Seawater) Density
Uref : Reference Current Velocity
Zref : Reference Height Above Seabed
d : Water Depth
Hs : Wave Significant Height
Tp : Peak Wave Period

Tool Output

Φrc : Relative Current Heading
Φrw : Relative Wave Heading
γ : Gamma Peak Enhancement Factor
L/(2+M)^2 : Required Value For Stability
OOD : Pipe Outer Diameter Including Coatings
Rdc : Current Velocity Reduction Factor
Rdw : Wave Velocity Reduction Factor
S : Wave Sample Period
SG : Pipe Specific Gravity Relative To Displaced Fluid
SGs : Required Specific Gravity For Stability (≤ 1)
SGs/SG : Required Specific Gravity Over Pipe Specific Gravity Ratio
Tz : Wave Zero Upcrossing Period
Uc : Reduced Current Velocity
Ur : Reduced Wave And Current Combined Velocity
Us : Reduced Significant Wave Velocity
Ws : Pipe Total Weight Per Length Including Contents and Buoyancy
Wss : Required Submerged Weight For Stability
Y : Lateral Displacement Ratio
ro : Seabed Roughness
sf : Wave Spreading Factor

CALCULATOR : DNVGL-RP-F109 Section 3.2 Subsea Pipeline Vertical Stability (Multi Layer Pipe) [FREE] ±

Calculate submerged pipe unit submerged weight and vertical stability in water (DNVGL-RP-F109 section 3.2).

In order to avoid flotation, the pipe specific gravity should be greater than or equal to one. If the pipe mass is uncertain, the pipe specific gravity should be greater than or equal to 1.1. Details of the individual pipe layers are displayed in the output 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