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CALCULATOR MODULE : ASME B31 Pipeline Stress Intensity Factors ... more ...
ASME B31 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. The calculators can be used for ASME B31.3 (table D300), ASME B31.4 (table 402.11), and ASME B31.8 (table E1). Select the appropriate code for your calculation. There are slight differences in the calculations for each code. Refer to the figures for symbols.

CALCULATOR : ASME B31 Pipe Spool Flexibility Maximum Displacement ... more ...
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 Annex A402.3 Pipeline BiPlane Longitudinal And Combined Stress Check (Offshore) ... more ...
ASME B31.4 section A402.3 offshore pipeline biplane longitudinal stress and combined stress check.
Stresses are calculated for the nominal wall thickness or the pressure containment wall thickness. Bending is assumed to be inplane. For straight onshore pipe the stress intensity factor i equals 1. For onshore pipe components the longitudinal stress intensity factor has a minimum value of 4/3. For straight pipe the torsion moment is generally equal to zero. The pressure load is calculated using the pressure difference (for platform piping the pressure difference equals the internal pressure). The end force is due to external forces acting on the end of the pipeline, for example spool reaction forces.

CALCULATOR : ASME B31.4 Annex A402.3 Pipeline Hoop Stress Check From Operating Pressure (Offshore) ... more ...
ASME B31.4 section A402.3 offshore pipeline wall stress from operating pressure.
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 Annex A402.3 Pipeline Hoop Stress Check From Operating Pressure And Elevation (Offshore) ... more ...
ASME B31.4 section A402.3 offshore pipeline wall stress from operating pressure and elevation.
The local pressure is calculated from the reference pressure and relative elevation. For onshore pipelines, the maximum hoop stress occurs at the lowest point on the pipeline. For subsea pipelines and risers, the maximum hoop stress can occur at the water line, or the lowest elevation, depending on fluid density. The internal fluid can be either single phase liquid, single phase gas, or two phase gas liquid. The fluid density can vary because of changes in composition and temperature.

CALCULATOR : ASME B31.4 Annex A402.3 Pipeline InPlane Longitudinal And Combined Stress Check (Offshore) ... more ...
ASME B31.4 section 402.5 offshore pipeline inplane longitudinal stress and combined stress check.
Stresses are calculated for the nominal wall thickness or the pressure containment wall thickness. Bending is assumed to be inplane. For straight onshore pipe the stress intensity factor i equals 1. For onshore pipe components the longitudinal stress intensity factor has a minimum value of 4/3. For straight pipe the torsion moment is generally equal to zero. The pressure load is calculated using the pressure difference (for platform piping the pressure difference equals the internal pressure). The end force is due to external forces acting on the end of the pipeline, for example spool reaction forces.

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

CALCULATOR : ASME B31.4 Annex A402.3 Pipeline Wall Thickness From Operating Pressure And Elevation (Offshore) ... more ...
ASME B31.4 section A402.3 offshore pipeline wall thickness from operating pressure and elevation.
The local pressure is calculated from the reference pressure and relative elevation. The pipe wall thickness should be calculated for the maximum pressure or pressure difference at any point on the pipeline. The internal fluid can be either single phase liquid, single phase gas, or two phase fluid. Variations in fluid density due to composition and temperature should be accounted for.

CALCULATOR : ASME B31.4 Section 402.3 Pipeline Hoop Stress Check From Operating Pressure (Onshore) ... more ...
ASME B31.4 section 402.3 onshore pipeline wall stress from operating pressure.
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 402.3 Pipeline Hoop Stress Check From Operating Pressure And Elevation (Onshore) ... more ...
ASME B31.4 section 402.3 onshore pipeline wall stress from operating pressure and elevation.
The local pressure is calculated from the reference pressure and relative elevation. For onshore pipelines, the maximum hoop stress occurs at the lowest point on the pipeline. The internal fluid can be either single phase liquid, single phase gas, or two phase gas liquid. The fluid density can vary because of changes in composition and temperature.

CALCULATOR : ASME B31.4 Section 402.5 Pipeline Expansion Stress Check (Onshore) ... more ...
ASME B31.4 section 402.5 pipeline expansion stress check.
Stresses are calculated for the nominal wall thickness. For straight onshore pipe the stress intensity factor i equals 1. For onshore pipe components the longitudinal stress intensity factor has a minimum value of 4/3. For straight pipe the torsion moment is generally equal to zero. The pressure load is calculated using the pressure difference (for onshore pipelines the pressure difference equals the internal pressure). The allowable expansion stress is calculated from the yield stress at the maximum temperature (Sh), and the yield stress at the minimum temperature (Sc). The yield stress values should be obtained from material tests.

CALCULATOR : ASME B31.4 Section 402.5 Pipeline InPlane Longitudinal And Combined Stress Check (Onshore) ... more ...
ASME B31.4 section 402.5 onshore pipeline inplane longitudinal stress and combined stress check.
Stresses are calculated for the nominal wall thickness or the pressure containment wall thickness. Bending is assumed to be inplane. For straight pipe the torsion moment is generally equal to zero. The combined stress can be calculated using either Tresca's or Von Mises combined stress formula. The installation force is due to loads on the pipeline during installation, for example lay tension.

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

CALCULATOR : ASME B31.4 Section 403.2 Pipeline Wall Thickness From Operating Pressure And Elevation (Onshore) ... more ...
ASME B31.4 section 403.2 onshore pipeline wall thickness from operating pressure and elevation.
The local pressure is calculated from the reference pressure and relative elevation. The pipe wall thickness should be calculated for the maximum pressure at any point on the pipeline. The internal fluid can be either single phase liquid, single phase gas, or two phase fluid. Variations in fluid density due to composition and temperature should be accounted for.

CALCULATOR : ASME B31.4 Section 404.3 Pipeline Extruded Branch Reinforcement (Offshore) ... more ...
ASME B31.4 section 404.3 offshore pipeline branch reinforcement area for extruded branch connections.
The branch material is assumed to have an equal or greater yield stress than the extrusion material. The branch girth weld factor E is assumed tobe equal to one (1.0). 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) ... more ...
ASME B31.4 section 404.3 onshore pipeline branch reinforcement area for extruded branch connections.
The branch material is assumed to have an equal or greater yield stress than the extrusion material. The branch girth weld factor E is assumed tobe equal to one (1.0). 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) ... more ...
ASME B31.4 section 404.3 offshore pipeline branch reinforcement area for welded branch connections.
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) ... more ...
ASME B31.4 section 404.3 onshore pipeline branch reinforcement area for welded branch connections.
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 Test Pressure And Hoop Stress Check From Operating Pressure (Offshore) ... more ...
ASME B31.4 section 437.4 offshore pipeline test pressure and wall stress check from operating pressure.
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 Test Pressure And Hoop Stress Check From Operating Pressure (Onshore) ... more ...
ASME B31.4 section 437.4 onshore pipeline test pressure and wall stress check from operating pressure.
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 Test Pressure And Hoop Stress Check From Operating Pressure And Elevation (Offshore) ... more ...
ASME B31.4 section 437.4 offshore pipeline test pressure and wall stress check from operating pressure and elevation.
The local operating pressure, and the reference test pressure are calculated from elevation. The reference test pressure should be calculated so that the ratio of local test pressure to local operating pressure is greater than or equal to the test pressure ratio at all points on the pipeline. The internal fluid can be either single phase liquid, single phase gas, or two phase gas liquid. The test fluid can be either single phase gas, or single phase liquid. Calculations should account for variations in the composition and temperature of the operating fluid and the test fluid.

CALCULATOR : ASME B31.4 Section 437.4 Pipeline Test Pressure And Hoop Stress Check From Operating Pressure And Elevation (Onshore) ... more ...
ASME B31.4 section 437.4 onshore pipeline test pressure and wall stress check from operating pressure and elevation.
The local operating pressure, and the reference test pressure are calculated from elevation. The reference test pressure should be calculated so that the ratio of local test pressure to local operating pressure is greater than or equal to the test pressure ratio at all points on the pipeline. The internal fluid can be either single phase liquid, single phase gas, or two phase gas liquid. The test fluid can be either single phase gas, or single phase liquid. Calculations should account for variations in the composition and temperature of the operating fluid and the test fluid.

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

CALCULATOR : ASME B31G Level 0 Defect Assessment For Corroded Pipelines ... more ...
ASME B31.G level 0 defect assessment and allowable defect length for corroded pipelines.
Calculate the allowable defect length, based on the original B31.G method. The level 0 assessment can be used as an initial screening assessment. Defects which fail the level 0 assessment require further assessment, or repair.

CALCULATOR : ASME B31G Level 1 Defect Assessment Pressure Derating For Corroded Pipelines ... more ...
ASME B31.G level 1 defect assessment and pressure derating for corroded pipelines.
Calculate the derated operating pressure for defects which have failed the level 0 assessment. The level 0 assessment is included with the level 1 assessment, and can be used for initial screening. The level 1 assessment should be performed for defects which have failed the level 0 assessment. Defects which have failed the level 1 assessment require further assessment or repair.

CALCULATOR : Fluid Density And Composition ... more ...
Fluid density for single phase fluid, single phase gas, and two phase gas liquid.
For two phase fluids the fluid density and composition can be calculated from either the average fluid density, the gas oil ratio GOR, the gas mass fraction, the gas volume fraction, or can be user defined.

CALCULATOR : Gas Specific Gravity Molar Mass And Density ... more ...
Single phase gas specific gravity and molar mass.
Gas molar mass is approximately equal to the molar mass of dry air times the gas specific gravity at standard conditions (for most gases the compressibility factor Z is approximately equal to 1 at standard conditions). The molar mass of dry air is taken as 28.964 kg/kgmole. For gas mixtures, gas specific gravity is easier to measure than the molar mass.

CALCULATOR : Pipeline Axial Load From Temperature And Pressure (Single Layer Pipe Or User Defined) ... more ...
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 DNV thick wall formula. 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 Axial Stiffness EA (Multi Layer Pipe) [Check] ... more ...
Pipe EA modulus or axial stiffness, equivalent Poisson's ratio, and equivalent thermal expansion coefficient for multi layer pipelines.
The axial stiffness is calculated from the inside layers only. Enter all of the pressure containing internal layers, but only include the Young's modulus and thermal expansion coefficient values for the internal layers which will contribute to the axial stiffness. Generally, internal metallic liners are included in axial stiffness calculations.
The equivalent Poisson's ratio and thermal expansion coefficient are calculated from the layers with a non zero Young's modulus value.

CALCULATOR : Pipeline Expansion Spool Combined Stress Check ... more ...
Combined hoop, longitudinal, bending and torsion stress in a pipeline expansion spool.
For expansion spools in contact with the ground, the bending moment and axial load should be calculated for combined lateral displacement and lateral friction loads. For suspended spools not in contact with the ground, the bending moment and axial load should be calculated for lateral displacement only. Bending is assumed to be inplane. Suspended spools should be supported to prevent biplanar or two dimensional bending.
The combined stress can be calculated using either Tresca's or Von Mises' formula. Generally, the combined stress should be less than or equal to 90% of yield. The nominal wall thickness is used for the calculations.

CALCULATOR : Pipeline Fluid Density Mass Moles Volume And Length ... more ...
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 can be calculated from either the average fluid density, the gas oil ratio GOR, the gas mass fraction, the gas volume fraction, or can be user defined. Fluid quantities (mass, volume, and gas moles) can be calculated from liquid volume, gas moles, total volume, total mass, or pipeline length.

CALCULATOR : Pipeline Fluid Density Volume Flow Rate Mole Flow Rate Mass Flow Rate And Velocity ... more ...
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 can be calculated from either the average fluid density, the gas oil ratio GOR, the gas mass fraction, the gas volume fraction, or can be user defined. Fluid flow rate (velocity, mass flow rate, volume flow rate, and gas mole flow rate) can be calculated from liquid volume flow rate, gas mole flow rate, total volume flow rate, total mass flow rate, or fluid velocity.

CALCULATOR : Pipeline Internal And External Pressure From Elevation ... more ...
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.

WWW LINK : US GPO : CFR 195 Hazardous Liquid Pipelines 
WWW LINK : Wikipedia : Barlows Formula  Thin Wall Hoop Stress 
WWW LINK : Wikipedia : Pressure Measurement 