Calculate DNVGL-ST-F101 submarine pipeline system test pressure and mill test pressure.
The system test pressure is calculated from the local incidental pressure. The required system test pressure and mill test pressure should be calculated for all points on the pipeline or pipeline section. Use the Result Plot option to plot the test pressure and hoop stress from minimum to maximum elevation.
Reference : DNVGL-ST-F101 : Submarine Pipeline Systems (Download from the DNVGL website)
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CALCULATOR : DNVGL ST F101 Section 5.4.2 Subsea Pipeline System Test Pressure And Local Hoop Stress Check From Elevation [PLUS] ±
Calculate subsea pipeline minimum local system test pressure and hoop stress check from incidental pressure and elevation (DNVGL-ST-F101 Section 5.4.2). The minimum local mill test pressure is calculated from the local incidental pressure and local system test pressure. The system test pressure and mill test pressure must meet the minimum test pressure requirement at all points on the pipeline or pipeline system. The mill test pressure must also meet the additional requirements for the mill pressure test (see the mill test pressure calculator). Use the Result Plot option to plot the test pressure and hoop stress versus elevation. Tool Input- plitype : Local Internal Pressure Type
- Prdu : User Defined Design Pressure At Reference Elevation
- Priu : User Defined Incidental Pressure At Reference Elevation
- Pliu : User Defined Incidental Pressure At Local Elevation
- ρf : Operating Fluid Density
- Zr : Reference Elevation
- Zl : Local Elevation
- pletype : Local External Pressure Type
- Pleu : User Defined Local External Pressure
- ρe : External Fluid Density
- Zs : Surface Elevation
- plttype : Local Test Pressure Type
- ρt : Test Fluid Density
- Zt : Test Point Elevation
- Prtu : User Defined Test Pressure At Reference Elevation
- Pttu : User Defined Test Pressure At Test Point Elevation
- Pltu : User Defined Test Pressure At Local Elevation
- syutype : Stress Table Type
- mattype : Material Strength Type
- SMYSu : User Defined Specified Minimum Yield Stress
- SMTSu : User Defined Specified Minimum Tensile Stress
- autypeo : Material Strength Factor Type For Operation
- schdtype : Pipe Schedule Type
- diamtype : Pipe Diameter Type
- ODu : User Defined Outside Diameter
- IDu : User Defined Inside Diameter
- wtntype : Wall Thickness Type
- tnu : User Defined Wall Thickness
- ttoltype : Wall Thickness Tolerance Type
- xfu : User Defined Negative Wall Thickness Fraction
- tfu : User Defined Negative Wall Thickness Allowance
- ginctype : Incidental Pressure Factor Type
- γincu : User Defined Incidental Pressure Factor
- gsctype : Safety Class Resistance Factor Type (Test Fluid Safety Class)
- γscu : User Defined Safety Class Resistance Factor
- apttype : Test Pressure Factor Type (Operation Fluid Safety Class)
- αmptu : User Defined Mill Pressure Test Factor
- αsptu : User Defined System Pressure Test Factor
- optype : Characteristic Wall Thickness Type
- ta : Corrosion Allowance
Tool Output- ΔPlt : Delta Test Pressure Across Pipe Wall At Local Elevation
- Δz : Local Elevation Relative To Reference Elevation
- αmpt : Mill Test Pressure Factor
- αspt : System Test Pressure Factor
- αuo : Material Strength Factor For Operation
- αut : Material Strength Factor For Test
- γinc : Incidental Pressure Factor
- γm : Material Resistance Factor
- γsc : Safety Class Resistance Factor
- ID : Pipe Nominal Inside Diameter
- OD : Pipe Nominal Outside Diameter
- OD/t : Diameter Over Wall Thickness Ratio
- Pb : Burst Pressure
- Pd : Design Pressure At Reference Elevation
- Ple : External Pressure At Local Elevation
- Plhmin : Minimum Required Mill Test Pressure For Local Elevation
- Pli : Incidental Pressure At Local Elevation
- Plt : Test Pressure At Local Elevation
- Plt/Pltmin : Local Test Pressure Over Minimum Local Test Pressure Ratio (≥ 1)
- Pltmin : Minimum Required System Test Pressure At Local Elevation
- Pri : Incidental Pressure At Reference Elevation
- Prt : Test Pressure At Reference Elevation
- Ptt : Test Pressure At Test Point Elevation
- SMTS : Specified Minimum Tensile Stress
- SMYS : Specified Minimum Yield Stress
- Sh : Hoop Stress
- Sh/fca : Hoop Stress Over Allowable Stress Ratio (≤ 1)
- fca : Allowable Hoop Stress
- fcb : Burst Stress
- fu : Ultimate Stress
- fy : Yield Stress
- t : Pressure Design Wall Thickness
- t1 : Wall Thickness t1
- tf : Fabrication Allowance
- tfx : Fabrication Fraction
- tm : Minimum Wall Thickness
- tn : Pipe Nominal Wall Thickness
- wd : Water Depth At Local Elevation
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CALCULATOR : DNVGL ST F101 Section 7.5.1 Subsea Pipeline Mill Test Pressure [FREE] ±
Calculate subsea pipeline mill test pressure (DNVGL-ST-F101 Section 7.5.1). The minimum wall thickness can be either calculated from the nominal wall thickness and fabrication tolerance, or user defined. The external pressure is assumed to equal zero. The mill test should also meet the minimum test pressure requirements for the system test pressure and the local incidental pressure (see the system test pressure calculator). Tool Input- syutype : Stress Table Type
- mattype : Material Strength Type
- SMYSu : User Defined Specified Minimum Yield Stress
- SMTSu : User Defined Specified Minimum Tensile Stress
- schdtype : Pipe Schedule Type
- diamtype : Pipe Diameter Type
- ODu : User Defined Outside Diameter
- IDu : User Defined Inside Diameter
- wtntype : Wall Thickness Type
- tnu : User Defined Wall Thickness
- ttoltype : Wall Thickness Tolerance Type
- xfu : User Defined Negative Wall Thickness Fraction
- tfu : User Defined Negative Wall Thickness Allowance
- loadtype : Mill Test End Type
Tool Output- OD : Pipe Nominal Outside Diameter
- Ph : Test Pressure
- SMTS : Specified Minimum Tensile Stress
- SMYS : Specified Minimum Yield Stress
- Sa : Allowable Stress
- Sh : Hoop Stress
- Sh/SMYS : Hoop Stress Over Yield Stress Ratio
- k : Mill Test Pressure Factor
- tf : Fabrication Allowance
- tm : Minimum Wall Thickness
- tn : Pipe Nominal Wall Thickness
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CALCULATOR : DNVGL ST F101 Subsea Pipeline Hydrotest Liquid Volume And Dose Rate [FREE] ±
Calculate DNVGL-ST-F101 subsea pipeline water volume and liquid chemical dose rate for water hydrotest. The dose rate can be calculated from the dose volume fraction, the dose mass fraction, the dose volume ratio, or the dose mass ratio. The average fluid density includes the dose chemical. The calculated volume does not include the effect of fluid compression or pipe expansion due to the test pressure. Tool Input- schdtype : Pipe Schedule Type
- diamtype : Pipe Diameter Type
- ODu : User Defined Outside Diameter
- IDu : User Defined Inside Diameter
- wtntype : Wall Thickness Type
- tnu : User Defined Wall Thickness
- dosetype : Dosage Type
- Xvu : User Defined Dose Volume Fraction
- Xmu : User Defined Dose Mass Fraction
- Rvu : User Defined 200
- Rmu : User Defined 250
- voltype : Fluid Volume Type
- Vlu : User Defined Liquid Volume
- Mlu : User Defined Liquid Mass
- Vfu : User Defined Total Fluid Volume
- Mfu : User Defined Total Fluid Mass
- Lu : User Defined Pipeline Length
- ρl : Liquid Density
- ρd : Dose Chemical Density
Tool Output- ρf : Fluid Average Density
- ID : Inside Diameter
- L : Pipe Length
- Md : Dose Mass
- Mf : Total Fluid Mass
- Ml : Liquid Mass
- Rm : Dose Mass Ratio
- Rv : Dose Volume Ratio
- Vd : Dose Volume
- Vf : Total Fluid Volume
- Vl : Liquid Volume
- Xm : Dose Mass Fraction
- Xv : Dose Volume Fraction
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CALCULATOR : DNVGL ST F101 Subsea Pipeline Leak Test Gas Volume And Dose Rate [FREE] ±
Calculate DNVGL-ST-F101 subsea pipeline gas volume and liquid chemical dose rate for gas leak test. The dose rate can be calculated from dose volume fraction, dose mass fraction or dose gas ratio. The average fluid density includes the dose chemical. The calculated volume does not include the effect of pipe expansion due to the test pressure. Tool Input- schdtype : Pipe Schedule Type
- diamtype : Pipe Diameter Type
- ODu : User Defined Outside Diameter
- IDu : User Defined Inside Diameter
- wtntype : Wall Thickness Type
- tnu : User Defined Wall Thickness
- dosetype : Dose Rate Type
- Xvu : User Defined Dose Volume Fraction
- Xmu : User Defined Dose Mass Fraction
- Rvu : User Defined Dose Volume Over Gas Moles Ratio
- Rmu : User Defined Dose Mass Over Gas Moles Ratio
- voltype : Fluid Volume Type
- Vgu : User Defined Gas Volume
- Mgu : User Defined Gas Mass
- Ngu : User Defined Gas Moles
- Vfu : User Defined Total Fluid Volume
- Mfu : User Defined Total Fluid Mass
- Lu : User Defined Pipeline Length
- ρd : Dose Chemical Density
- P : Fluid Pressure
- T : Fluid Temperature
- Z : Gas Compressibility Factor
- SG : Gas Specific Gravity
Tool Output- ρf : Fluid Average Density
- ρg : Gas Density (At T P)
- ID : Inside Diameter
- L : Pipe Length
- Md : Dose Mass
- Mf : Total Fluid Mass
- Mg : Gas Mass
- Ng : Gas Moles
- Rm : Dose Mass Over Gas Moles Ratio
- Rv : Dose Volume Over Gas Moles Ratio
- Vd : Dose Volume
- Vf : Total Fluid Volume
- Vg : Gas Volume
- Xm : Dose Mass Fraction
- Xv : Dose Volume Fraction
- vg : Gas Mole Volume (At T P)
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CALCULATOR : DNVGL ST F101 Subsea Pipeline Test Pressure And Hoop Stress Check (General) [FREE] ±
Calculate DNVGL-ST-F101 subsea pipeline general test pressure and hoop stress check from diameter, wall thickness, wall thickness tolerance and design stress. For DNVGL-ST-F101 subsea pipelines use the Barlows thin wall equation for mid wall diameter option. Wall thickness tolerance can be defined by either a fraction tolerance, or an allowance tolerance. All tolerances should be positive. The corrosion allowance should include mechanical allowance (eg threads), erosion allowance and any other allowances. Tool Input- pletype : External Pressure Type
- Peu : User Defined External Pressure
- wtntype : Wall Thickness Type
- tnu : User Defined Wall Thickness
- ttoltype : Wall Thickness Tolerance Type
- xfu : User Defined Negative Wall Thickness Fraction
- tfu : User Defined Negative Wall Thickness Allowance
- syutype : Stress Table Type
- mattype : Yield Stress Type
- SMYSu : User Defined Specified Minimum Yield Stress
- schdtype : Pipe Schedule Type
- diamtype : Pipe Diameter Type
- ODu : User Defined Outside Diameter
- IDu : User Defined Inside Diameter
- sdtype : Design Stress Type (F x SMYS)
- Fu : User Defined Design Factor
- Sdu : User Defined Design Stress
- walltype : Hoop Stress Wall Thickness Type
- Yu : User Defined ASME Y Factor
- hooptype : Hoop Stress Wall Thickness Type
- testtype : Test Pressure Type
- Tu : User Defined Test Factor
- Ptu : User Defined Test Pressure
- tc : Corrosion Allowance
- Pi : Operating Pressure
Tool Output- ID : Pipe Inside Diameter
- OD : Pipe Outside Diameter
- OD/tn : Pipe Diameter Over Wall Thickness Ratio
- Pe : External Pressure
- Pt : Test Pressure
- PtΔ : Test Pressure Difference
- SMYS : Specified Minimum Yield Stress
- Sd : Design Stress
- Sh : Hoop Stress
- Sh/SMYS : Hoop Stress Over Yield Stress Ratio
- T : Test Pressure Factor
- tf : Fabrication Allowance
- tfx : Fabrication Fraction
- th : Hoop Stress Thickness (Pressure Containment)
- tm : Minimum Wall Thickness
- tn : Nominal Wall Thickness
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CALCULATOR : DNVGL ST F101 Section 5.3.3 Subsea Pipeline Derated Yield Stress And Tensile Stress From Temperature [FREE] ±
Calculate subsea pipeline temperature derating stress from temperature (DNVGL-ST-F101 section 5.3.3 Figure 5-2). The derating stress is valid for temperatures up to 200 degrees C. For temperatures above 200 C material tests should be performed. For low temperature pipelines fracture toughness should also be considered. Use the Result Table option to display a table of derated yield stress versus material type at the design temperature. Use the Result Plot option to display a plot of derated yield stress versus temperature for duplex stainless 22Cr 25Cr, and carbon manganese steel 13Cr curves. Tool Input- syutype : Stress Table Type
- mattype : Material Strength Type
- SMYSu : User Defined Specified Minimum Yield Stress
- SMTSu : User Defined Specified Minimum Tensile Stress
- syttype : Temperature Derating Type
- fytu : User Defined Yield Stress Temperature Derating
- futu : User Defined Ultimate Stress Temperature Derating
- autype : Material Strength Factor Type
- Td : Design Temperature
Tool Output- αu : Material Strength Factor
- SMTS : Specified Minimum Tensile Stress
- SMYS : Specified Minimum Yield Stress
- fcb : Burst Stress
- fu : Tensile Stress
- fut : Temperature Derating Tensile Stress
- fy : Yield Stress
- fyt : Temperature Derating Yield Stress
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CALCULATOR : DNVGL ST F101 Subsea Pipeline Diameter And Wall Thickness Schedule [FREE] ±
Calculate DNVGL-ST-F101 subsea pipeline diameter and pressure design wall thickness from pipe schedule. The pressure design thickness equals the nominal wall thickness minus the corrosion allowance and fabrication allowance. The minimum wall thickness equals the nominal wall thickness minus the fabrication allowance. The corrosion allowance includes mechanical allowances such as threads and damage etc. Use the Result Table option display a table of pressure design wall thickness versus wall thickness for the selected diameter schedule. Tool Input- schdtype : Schedule Type
- diamtype : Diameter Type
- ODu : User Defined Outside Diameter
- IDu : User Defined Inside Diameter
- wtntype : Wall Thickness Type
- tnu : User Defined Wall Thickness
- ttoltype : Wall Thickness Fabrication Tolerance Type
- txu : User Defined Negative Wall Thickness Fraction
- tfu : User Defined Negative Wall Thickness Allowance
- c : Wall Thickness Corrosion Allowance
Tool Output- ID : Nominal Inside Diameter
- OD : Nominal Outside Diameter
- OD/tn : Diameter Over Wall Thickness Ratio
- tf : Wall Thickness Fabrication Allowance
- tm : Minimum Wall Thickness
- tn : Nominal Wall Thickness
- tp : Pressure Design Wall Thickness
- tx : Wall Thickness Fabrication Fraction
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