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CALCULATOR ASME B31.4 Section 402.3 Pipeline Hoop Stress Check From Operating Pressure (Onshore) [LOGIN]
Calculate onshore pipeline hoop stress from operating pressure (ASME B31.4 section 402.3). The pressure is user input. Use this calculator for pipelines or piping with small changes in elevation. For platform piping select the no external pressure option.

CALCULATOR ASME B31.4 Section 402.5 Expansion Spool Longitudinal Combined And Expansion Stress Check (Onshore) [LOGIN]
Calculate bending moment and reaction force for an onshore pipeline expansion spool using simple beam theory. Bending is assumed to be in plane, and torsion is assumed to be equal to zero.
Stress checks include longitudinal stress, combined stress and flexibility stress for unrestrained pipelines (ASME B31.4 section 402.5 to 402.7 and 403.3).

CALCULATOR ASME B31.4 Section 402.5 Pipeline Bi Plane Longitudinal Combined And Expansion Stress Check (Onshore) [LOGIN]
Calculate bi plane longitudinal stress, combined stress and expansion stress for restrained and unrestrained onshore pipelines (ASME B31.4 section 402.5 to 402.7 and 403.3). Combined stress can be calculated using either Tresca's equation, or von Mises equation. Bending stress is calculated from in plane and out of plane bending moments and stress intensity factors. FEA analysis is recommended for detailed stress analysis of components.

CALCULATOR ASME B31.4 Section 402.5 Pipeline In Plane Longitudinal Combined And Expansion Stress Check (Onshore) [LOGIN]
Calculate in plane longitudinal stress, combined stress and expansion stress for restrained and unrestrained onshore pipelines (ASME B31.4 section 402.5 to 402.7 and 403.3). Combined stress can be calculated using either Tresca's equation, or von Mises equation. The stress intensity factor can either be set to one (straight pipelines), or user defined. The torsion moment is assumed to be zero.

CALCULATOR ASME B31.4 Section 403.2 Pipeline Wall Thickness From Operating Pressure (Onshore) [LOGIN]
Calculate onshore pipeline wall thickness from operating pressure (ASME B31.4 section 403.2). The pressure is user input. Use this calculator for pipelines or piping with small changes in elevation.

CALCULATOR ASME B31.4 Section 403.9 Pipeline Maximum Displacement Flexibility Check [LOGIN]
Calculate pipe spool flexibility maximum displacement check (ASME B31.1 section 119.7, ASME B31.3 section 319.4, ASME B31.4 section 403.9, and ASME B31.8 section 833.7). A formal flexibility assessment is generally not required for pipe sections with displacement less than the calculated maximum displacement. Reaction forces and moments may require separate analysis.
The developed pipe length is the length measured along the pipe center line. The difference between the developed length, and the straight line length is an approximate measure of the offsets in the line.

CALCULATOR ASME B31.4 Section 404.3 Pipeline Extruded Branch Reinforcement (Offshore) [LOGIN]
Calculate offshore pipeline branch reinforcement area for extruded branch connections (ASME B31.4 section 404.3).
The corroded extrusion diameter should be used for Do. The design wall thicknesses include the corrosion allowance. For platform piping select the no external pressure option.

CALCULATOR ASME B31.4 Section 404.3 Pipeline Extruded Branch Reinforcement (Onshore) [LOGIN]
Calculate onshore pipeline branch reinforcement area for extruded branch connections (ASME B31.4 section 404.3).
The corroded extrusion diameter should be used for Do. The design wall thicknesses include the corrosion allowance.

CALCULATOR ASME B31.4 Section 404.3 Pipeline Welded Branch Reinforcement (Offshore) [LOGIN]
Calculate offshore pipeline branch reinforcement area for welded branch connections (ASME B31.4 section 404.3).
The branch opening length is the maximum of the branch corroded internal diameter, and the axial length of the opening. For platform piping select the no external pressure option.

CALCULATOR ASME B31.4 Section 404.3 Pipeline Welded Branch Reinforcement (Onshore) [LOGIN]
Calculate onshore pipeline branch reinforcement area for welded branch connections (ASME B31.4 section 404.3).
The branch opening length is the maximum of the branch corroded internal diameter, and the axial length of the opening.

CALCULATOR ASME B31.4 Section 437.4 Pipeline Hydrostatic And Pneumatic Leak Test Pressure And Hoop Stress Check (Offshore) [LOGIN]
Calculate offshore pipeline test pressure and wall stress check from operating pressure (ASME B31.4 section 437.4).
The operating pressure is user input. Use this calculator for pipelines or piping with small changes in elevation. For platform piping select the no external pressure option.

CALCULATOR ASME B31.4 Section 437.4 Pipeline Hydrostatic And Pneumatic Leak Test Pressure And Hoop Stress Check (Onshore) [LOGIN]
Calculate onshore pipeline test pressure and wall stress check from operating pressure (ASME B31.4 section 437.4).
The operating pressure is user input. Use this calculator for pipelines or piping with small changes in elevation. For platform piping select the no external pressure option.

CALCULATOR ASME B31.4 Section 451.6.2.8 Pipeline Allowable Ripple Height From Hoop Stress (Offshore) [LOGIN]
Calculate offshore pipeline maximum allowable ripple height from hoop stress at the maximum operating pressure (ASME B31.4 section 451.6.2.8).
The hoop stress is calculated using Barlow's formula. The mid wall option (Dm), should only be used for offshore pipelines. The hoop stress may be calculated from either the nominal wall thickness, or the pressure containment wall thickness (nominal wall thickness minus the corrosion allowance). For platform piping select the no external pressure option.

CALCULATOR ASME B31.4 Section 451.6.2.8 Pipeline Allowable Ripple Height From Hoop Stress (Onshore) [LOGIN]
Calculate onshore pipeline maximum allowable ripple height from hoop stress at the maximum operating pressure (ASME B31.4 section 451.6.2.8).
The hoop stress is calculated using Barlow's formula. The mid wall option (Dm), should only be used for offshore pipelines. The hoop stress may be calculated from either the nominal wall thickness, or the pressure containment wall thickness (nominal wall thickness minus the corrosion allowance).

CALCULATOR ASME B31.4 Section A402.3 Expansion Spool Longitudinal Combined And Expansion Stress Check (Offshore) [LOGIN]
Calculate bending moment and reaction force for an offshore pipeline expansion spool using simple beam theory. Bending is assumed to be in plane, and torsion is assumed to be equal to zero.
Stress checks include longitudinal stress, combined stress and flexibility stress for unrestrained pipelines (ASME B31.4 section A402.3.5)

CALCULATOR ASME B31.4 Section A402.3 Pipeline Bi Plane Longitudinal Combined And Expansion Stress Check (Offshore) [LOGIN]
Calculate bi plane longitudinal stress, combined stress and expansion stress for restrained and unrestrained offshore pipelines (ASME B31.4 section A402.3.5). Combined stress can be calculated using either Tresca's equation, or von Mises equation. Bending stress is calculated from in plane and out of plane bending moments and stress intensity factors. FEA analysis is recommended for detailed stress analysis of components.

CALCULATOR ASME B31.4 Section A402.3 Pipeline Hoop Stress Check From Operating Pressure (Offshore) [LOGIN]
Calculate offshore pipeline hoop stress from operating pressure (ASME B31.4 section A402.3).
The pressure is user input. Use this calculator for pipelines or piping with small changes in elevation. For platform piping select the no external pressure option.

CALCULATOR ASME B31.4 Section A402.3 Pipeline In Plane Longitudinal Combined And Expansion Stress Check (Offshore) [LOGIN]
Calculate in plane longitudinal stress, combined stress and expansion stress for restrained and unrestrained offshore pipelines (ASME B31.4 section A402.3.5). Combined stress can be calculated using either Tresca's equation, or von Mises equation. The stress intensity factor can either be set to one (straight pipelines), or user defined. The torsion moment is assumed to be zero.

CALCULATOR ASME B31.4 Section A402.3 Pipeline Wall Thickness From Operating Pressure (Offshore) [LOGIN]
Calculate offshore pipeline wall thickness from operating pressure (ASME B31.4 section A402.3). The pressure is user input. Use this calculator for pipelines or piping with small changes in elevation.

CALCULATOR ASME B31.8 Maximum Flange Bending Moment To Prevent Leakage [LOGIN]
Calculate the maximum flange bending moment to prevent leakage for a flanged joint with no self sealing characteristics (ASME B31.8 appendix E).

CALCULATOR Gas Liquid And Two Phase Fluid Density [LOGIN]
Fluid density for single phase fluid, single phase gas, and two phase gas liquid.
For two phase fluids the fluid density and composition may be calculated from either the average fluid density, the gas oil ratio GOR, the gas mass fraction, the gas volume fraction, or may be user defined.

CALCULATOR Gas Liquid And Two Phase Pipeline Fluid Density Amd Flow Rate [LOGIN]
Pipeline fluid density and flow rate for single phase fluid, single phase gas, and two phase gas liquid.
For two phase fluids the fluid density and composition may be calculated from either the average fluid density, the gas oil ratio GOR, the gas mass fraction, the gas volume fraction, or may be user defined. Fluid flow rate (velocity, mass flow rate, volume flow rate, and gas mole flow rate) may be calculated from liquid volume flow rate, gas mole flow rate, total volume flow rate, total mass flow rate, or fluid velocity.

CALCULATOR Gas Liquid And Two Phase Pipeline Fluid Density And Volume [LOGIN]
Pipeline fluid density, mass and volume for single phase fluid, single phase gas, and two phase gas liquid.
For two phase fluids the fluid density and composition may be calculated from either the average fluid density, the gas oil ratio GOR, the gas mass fraction, the gas volume fraction, or may be user defined. Fluid quantities (mass, volume, and gas moles) may be calculated from liquid volume, gas moles, total volume, total mass, or pipeline length.

CALCULATOR Pipeline Axial Load From Temperature And Pressure (Single Layer Pipe Or User Defined) [LOGIN]
Calculate pipeline restrained and unrestrained global axial load from temperature and pressure for single layer pipe. Pipeline section properties are either calculated or user defined. The axial load is calculated using the thick wall formula (API RP 1111 and DNV OS F101). Loads are positive in tension, and negative in compression.
Nominal pipe diameter and wall thickness should normally be used for axial load calculations. Pipe wall stress is indicative only, and should not be used for stress checks. Stress checks should account for local variations in wall thickness and diameter.

CALCULATOR Pipeline Internal Pressure External Pressure And Pressure Difference From Elevation [LOGIN]
Pipeline internal and external static pressure from elevation, for single phase liquid, single phase gas, and two phase gas liquid.
External pressure is optional. For onshore pipelines use the ignore external pressure option. The two phase calculation is approximate and should be used for information only. For more accurate results, or to calculate transients, specialised fluid flow software should be used.

CALCULATOR Pipeline Mass And Weight Per Length (Multi Layer Pipe) [Check] [LOGIN]
Calculate pipe mass per length and weight per length for multi layer pipelines. Pipe weight may be either
• wet empty
• wet full
• dry empty
• dry full

CALCULATOR Pipeline Test Pressure From Operating Pressure And Elevation [LOGIN]
Pipeline test pressure from operating pressure and elevation. The operating fluid may be single phase liquid, single phase gas, or two phase gas liquid. The test fluid may be single phase gas, or single phase liquid.
For more accurate results, or to calculate transients, specialised fluid flow software should be used. For onshore pipelines use the ignore external pressure option.

INTERNET LINK US GPO : CFR 195 Hazardous Liquid Pipelines 
INTERNET LINK Wikipedia : Barlows Formula  Thin Wall Hoop Stress 
INTERNET LINK Wikipedia : Cylinder Stress 
INTERNET LINK Wikipedia : Pressure Measurement 
INTERNET LINK Wikipedia : Stress Mechanics 
INTERNET LINK Wikipedia : Yield Surface 
CALCULATOR MODULE API 5L (2007) Line Pipe
Calculate API 5L diameter, out of roundness, nominal mass, tolerances, yield stress, tensile stress, carbon equivalent etc...
Reference : API 5L : Specification for Line Pipe

CALCULATOR MODULE API RP 1102 (2007) Pipeline Crossing
Calculate API RP 1102 highway and railroad pipeline crossings.
API 1102 includes data values in US units and SI units. For consistency, US unit data values are used throughout. User input values can be either US units or SI units. Use the setup page to change units for input and output values (click the Setup link).
Reference : API RP 1102 : Steel Pipelines Crossing Railroads and Highways

CALCULATOR MODULE ASME B31.1 (2014) Power Piping
Calculate wall thickness, hoop stress, test pressure, axial load, flexibility check etc for ASME B31.1 power piping.
Reference : ANSI/ASME B31.1 : Power Piping

CALCULATOR MODULE ASME B31.3 (2014) Process Piping
Calculate ASME B31.3 process piping wall thickness, hoop stress, test pressure, flexibility. minimum temperature, bends, branch reinforcement, etc...
Reference : ANSI/ASME B31.3 : Process Piping

CALCULATOR MODULE ASME B31.4 (2012) Liquid Pipeline Stress Intensity Factors
ASME B31.4 Pipe Stress Intensification Factor Calculators : Calculate flexibility factor k, in plane stress intensification factor ii, out of plane stress intensification factor io, and flexibility characteristic h (ASME B31.4 table 402.11). Refer to the figures for symbols.
Reference : ANSI/ASME B31.4 : Liquid Pipelines

CALCULATOR MODULE ASME B31.8 (2014) Gas Pipeline
Calculate ASME B31.8 gas pipeline wall thickness, hoop stress, test pressure, flexibility, axial load, temperature derating, branch reinforcement, etc...
Reference : ANSI/ASME B31.8 : Gas Transmission And Distribution Piping Systems

CALCULATOR MODULE ASME B31.G (2012)
Calculate ASME B31.G defect assessment for corrosion defects and other blunt defects (such as gouges and grinding etc). Use NG18 for crack type defects. ASME B31G is not valid for crack type defects.
Use the level 0 assessment to calculate the allowable defect length measured in the axial direction. Level 0 is suitable for rough screening of defects. The allowable defect length is calculated according to B31G (1991).
Use the level 1 analysis to calculate the derating pressure for defects which have failed the level 0 analysis (calculated from the defect length and maximum depth).
Use the level 2 analysis to calculate the derating pressure for defects which have failed the level 1 analysis (calculated from the river bottom defect profile).
Reference : ANSI/ASME B31.G Manual For Determining The Remaining Strength Of Corroded Pipelines

CALCULATOR MODULE High Temperature High Pressure Pipeline
Calculate pipeline axial load, end expansion, anchor points, temperature profile, upheaval buckling, lateral buckling etc... for high temperature and high pressure pipelines.

CALCULATOR MODULE Pipeline Cross Section
Calculate pipe cross section properties: diameter, cross section area, mass, weight, constnets, bending stiffness, axial stiffness, and heat transfer etc... Calculators marked [Check] include full check calculations and are recommended for validation and checking.

CALCULATOR MODULE Pipeline Design
Calculate pipeline wall thickness, hoop stress, test pressure, combined stress, local buckling, buckling collapse pressure etc... for general pipeline design. For code specific calculations refer to the appropriate code based calculators.

DATA MODULE Line Pipe Diameter Wall Thickness Joint Length And Manufacturing Tolerances
Linepipe dimensions, outside diameter, joint length and manufacturing tolerances.
Note : API 5L data values are taken from API 5L 2007.
