Calculate API RP 1111 limit state pipeline test pressure and hoop stress check from local pressure and elevation.
The test pressure and hoop stress check should be calculated for all points on the pipeline or pipeline section. The internal fluid density is assumed constant.
Reference : API RP 1111 : Design, Construction, Operation, and Maintenance of Offshore Hydrocarbon Pipelines (Limit State Design) (2011)
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CALCULATOR : API RP 1111 Section 4.2.2 Pipeline Test Pressure From MOP And Elevation [PLUS] ±
Calculate pipe test pressure from MOP (API RP 1111 section 4.2.2). The local test pressure should be greater than or equal to the minimum local test pressure, and less than or equal to the maximum local test pressure at all points on the pipeline or pipeline section. The test point is the location where the pressure testing is performed and the test pressure is measured. The test pressure should meet the test requirements at all points on the pipeline, or pipeline section. Use the Result Plot option to plot the required test pressure versus elevation, and hoop stress versus elevation for the user defined test pressure. Normally, a test pressure will be selected which meets the test pressure requirements at all points on the pipeline. The local hoop stress should be less than or equal to the allowable stress at all elevations. Tool Input- pletype : Local External Pressure Type
- Pleu : User Defined Local External Pressure
- plitype : Local Internal Pressure (MOP) Type
- Priu : User Defined MOP At Reference Elevation
- Pliu : User Defined MOP At Local Elevation
- 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
- syutype : Stress Table Type
- mattype : Yield Stress Type
- SMYSu : User Defined Specified Minimum Yield Stress
- SMTSu : User Defined Specified Minimum Tensile Stress
- tfactype : Temperature Derating Type
- ftu : User Defined Temperature Reduction Factor
- sfactype : Stress Factor Type
- F4u : User Defined Equation 4 Stress Factor
- F5u : User Defined Equation 5 Stress Factor
- walltype : Corrosion Allowance Type
- plttype : Local Test Pressure Type
- 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
- pfactype : Test Pressure Factor Type
- fpu : User Defined Test Factor
- loctype : Location Type
- Fdu : User Defined Internal Pressure Design Factor
- calctype : Hoop Stress Calculation Type
- tc : Corrosion Allowance
- Td : Design Temperature
- ρi : Internal Fluid Density
- ρe : External Fluid Density
- ρt : Test Fluid Density
- Zr : Reference Elevation
- Zl : Local Elevation
- Zs : Surface Elevation
- Zt : Test Point Elevation
Tool Output- ΔPl : Delta Pressure Across Pipe Wall
- Fd : Internal Pressure Design Factor
- ID : Pipe Inside Diameter
- OD : Pipe Outside Diameter
- OD/tn : Diameter Over Wall Thickness Ratio
- Pb : Temperature Derated Burst Pressure
- Ple : External Pressure
- Plmop : Local Internal Pressure (MOP)
- Plt : Local Test Pressure
- Plt/Plmop : Local Test Pressure Over Local MOP Ratio
- Pltmax : Maximum Allowable Local Test Pressure (From Burst Pressure)
- Pltmin : Minimum Allowable Local Test Pressure (From Local MOP)
- Prt : Reference Test Pressure
- Ptt : Test Point Test Pressure
- Sa : Allowable Hoop Stress
- Sb : Temperature Derated Burst Stress
- Sh : Hoop Stress
- Sh/Sa : Hoop Stress Over Allowable Stress Ratio
- Su : Temperature Derated Tensile Stress
- Sy : Temperature Derated Yield Stress
- fp : Test Pressure Factor
- ft : Temperature Derating Factor (ASME B31.8)
- th : Hoop Stress Wall Thickness
- tn : Nominal Wall Thickness
- wd : Water Depth
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CALCULATOR : API RP 1111 Pipeline Leak Test Gas Volume And Dose Rate [FREE] ±
Calculate API RP 1111 pipeline liquid chemical dose rate and volume for single phase gas leak test. The chemcial 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 dose volume can be calculated for the gas phase, the total fluid (including dose chemical), or the pipeline length. 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 : API RP 1111 Pipeline Hydrotest Liquid Volume And Dose Rate [FREE] ±
Calculate API RP 1111 pipeline liquid chemical dose rate and volume for 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 dose volume can be calculated for the liquid phase, the total fluid (including dose chemical), or the pipeline length. 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 : API RP 1111 Pipeline Test Pressure And Hoop Stress Check (General) [FREE] ±
Calculate API RP 1111 general pipeline test pressure and hoop stress check from operating pressure, diameter, wall thickness and design stress. For API RP 1111 pipe, select either the Barlow's equation midwall diameter option, or the log equation option. The manufacturing tolerance is ignored (set the manufacturing tolerance to zero). 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 : API RP 1111 Section 4.3.1 Pipeline Temperature Derated Yield Stress And Tensile Stress [FREE] ±
Calculate temperature derating factor, and derated yield stress and tensile stress from temperature (API RP 1111 section 4.3.1 and ASME B31.8 section 841.1). Refer to Table 841.1.8-1 for the derating factors. The derating factors are valid for steel pipe upto 232 C (450 F). For temperatures above 232 C (450 F) the derating values should be used carefully (material specific test data should be used if it is available). The derating factor is assumed to be valid for yield stress and tensile stress. Use the Result Table option to display the results for the selected stress table (API, ASME or DNV). The temperature derating factor is not valid for nickel alloy, or stainless steel. Tool Input- syutype : Stress Table Type
- mattype : Material Type
- SMYSu : User Defined Specified Minimum Yield Stress
- SMTSu : User Defined Specified Minimum Tensile Stress
- tfactype : Temperature Derating Factor Type
- Td : Design Temperature
- Tu : User Defined Temperature Derating Factor
Tool Output- SMTS : Specified Minimum Tensile Stress
- SMTS/SMYS : Tensile Stress Over Yield Stress Ratio
- SMYS : Specified Minimum Yield Stress
- SMYS/SMTS : Yield Stress Over Tensile Stress Ratio
- Su : Derated Tensile Stress
- Sy : Derated Yield Stress
- T : Temperature Derating Factor
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CALCULATOR : API RP 1111 Pipeline Diameter And Wall Thickness Schedule [FREE] ±
Calculate API RP 1111 pipeline diameter and wall thickness from pipe schedule. The pressure design thickness equals the nominal wall thickness minus the corrosion 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. Fabrication tolerance is included in the design factor and is ignored. Tool Input- schdtype : Line Pipe Schedule Type
- diamtype : Line Pipe Diameter Type
- ODu : User Defined Outside Diameter
- IDu : User Defined Inside Diameter
- wtntype : Wall Thickness Type
- tnu : User Defined Wall Thickness
- c : Wall Thickness Corrosion Allowance
Tool Output- ID : Nominal Inside Diameter
- OD : Nominal Outside Diameter
- OD/tn : Diameter Over Wall Thickness Ratio
- tn : Nominal Wall Thickness
- tp : Pressure Design Wall Thickness
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