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ASME B31.4 (2012) Liquid Pipeline

ASME B31.4 Calculations

Calculate ASME B31.4 liquid pipeline wall thickness, hoop stress, test pressure, flexibility, axial load, ripples, branch reinforcement, etc...

Reference : ANSI/ASME B31.4 : Pipeline Transportation Systems For Liquids And Slurries

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CALCULATOR ASME B31.4 Section 402.3 Pipeline Hoop Stress Check From Operating Pressure (Onshore) Calculator [FREE LOGIN]

Calculate onshore pipeline hoop stress from operating pressure (ASME B31.4 section 402.3). Pipeline pressure should account for variations in elevation and fluid desnsity.

CALCULATOR ASME B31.4 Section 402.5 Expansion Spool Longitudinal Combined And Expansion Stress Check (Onshore) Calculator [FREE 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) Calculator [FREE 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) Calculator [FREE 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) Calculator [FREE LOGIN]

Calculate onshore pipeline wall thickness from operating pressure (ASME B31.4 section 403.2). Pipeline pressure should account for variations in elevation and fluid density.

CALCULATOR ASME B31.4 Section 403.9 Pipeline Maximum Displacement Flexibility Check Calculator [FREE 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) Calculator [FREE 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) Calculator [FREE 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) Calculator [FREE 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) Calculator [FREE 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) Calculator [FREE LOGIN]

Calculate offshore pipeline test pressure and wall stress check from operating pressure (ASME B31.4 section 437.4). Pipeline pressure should account for variations in elevation and fluid density. For subsea pipelines external pressure should also be accounted for.

CALCULATOR ASME B31.4 Section 437.4 Pipeline Hydrostatic And Pneumatic Leak Test Pressure And Hoop Stress Check (Onshore) Calculator [FREE LOGIN]

Calculate onshore pipeline test pressure and wall stress check from operating pressure (ASME B31.4 section 437.4). Pipeline pressure should account for variations in elevation and fluid density.

CALCULATOR ASME B31.4 Section 451.6.2.8 Pipeline Allowable Ripple Height From Hoop Stress (Offshore) Calculator [FREE 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) Calculator [FREE 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) Calculator [FREE 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) Calculator [FREE 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) Calculator [FREE LOGIN]

Calculate offshore pipeline hoop stress from operating pressure (ASME B31.4 section A402.3). Pipeline pressure should account for variations in elevation and fluid density. For subsea pipelines external pressure should also be accounted for.

CALCULATOR ASME B31.4 Section A402.3 Pipeline In Plane Longitudinal Combined And Expansion Stress Check (Offshore) Calculator [FREE 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) Calculator [FREE LOGIN]

Calculate offshore pipeline wall thickness from operating pressure (ASME B31.4 section A402.3). Pipeline pressure should account for variations in elevation and fluid density. For subsea pipelines external pressure should also be accounted for.

CALCULATOR ASME B31.8 Maximum Flange Bending Moment To Prevent Leakage Calculator [FREE 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 Bernoulli Equation Pipeline Internal And External Pressure From Elevation Calculator [FREE LOGIN]

Calculate pipeline internal and external static pressure from elevation, for single phase oil, single phase water, single phase gas, two phase oil water, and three phase oil water and gas (black oil).

External pressure is optional.

The pressure difference across the pipe wall is equal to the local internal pressure minus the local external pressure. For onshore pipelines use the ignore external pressure option.

CALCULATOR Bernoulli Equation Pipeline Test Pressure Factor Check From Test Pressure And Elevation Calculator [FREE LOGIN]

Check pipeline local test pressure and test pressure factor from the test pressure at the test elevation.

The local test pressure can be calculated from the test pressure at the test elevation for either single phase liquid test fluid, or single phase gas test fluid.

The local operating pressure can be calculated from the reference pressure and local elevation for either single phase oil, single phase water, single phase gas, two phase oil and water, or three phase black oil (oil, water and gas).

The test pressure factor is equal to the local test pressure divided by the local operating pressure.

The pressure difference across the pipe wall is equal to the local test pressure minus the local external pressure. For onshore pipelines use the ignore external pressure option.

CALCULATOR Bernoulli Equation Pipeline Test Pressure From Operating Pressure And Elevation Calculator [FREE LOGIN]

Calculate pipeline local test pressure and test pressure at the test elevation from the reference pressure and elevation.

The local operating pressure can be calculated from the reference pressure and local elevation for single phase oil, single phase water, single phase gas, two phase oil and water, or three phase black oil (oil, water and gas).

The local test pressure is equal to the local operating pressure times the test pressure factor. The test pressure at the test elevation can be calculated for either single phase liquid test fluid, or single phase gas test fluid.

The pressure difference across the pipe wall is equal to the local test pressure minus the local external pressure. For onshore pipelines use the ignore external pressure option.

CALCULATOR General Pipeline Axial Load From Temperature And Pressure (Single Layer Pipe Or User Defined) Calculator [FREE 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 General Pipeline Maximum And Minimum Diameter From Tolerance Calculator [FREE LOGIN]

Calculate pipeline maximum and minimum diameter from either user defined fraction / percentage tolerance, or user defined allowance. All tolerances should be entered as positive values. The maximum and minimum diameter can be calculated from either the nominal diameter, the maximum diameter, or the minimum diameter.

CALCULATOR General Pipeline Maximum And Minimum Wall Thickness From Tolerance Calculator [FREE LOGIN]

Calculate pipeline maximum and minimum wall thickness from either the fraction / percentage tolerance, or wall thickness allowance. All tolerances should be entered as positive values. The maximum and minimum wall thickness can be calculated from either the nominal wall thickness, the maximum wall thickness, or the minimum wall thickness.

CALCULATOR General Pipeline Test Pressure And Hoop Stress Check From Operating Pressure And Elevation Calculator [FREE LOGIN]

Calculate pipeline test pressure and wall stress check from operating pressure and elevation, using either Barlow's thin wall formula, or Lame's thick wall formula.

The local operating pressure can be calculated from the reference pressure and local elevation for single phase oil, single phase water, single phase gas, two phase oil and water, or three phase black oil (oil, water and gas).

The local test pressure is equal to the local operating pressure times the test pressure factor. The test pressure at the test elevation can be calculated for either single phase liquid test fluid, or single phase gas test fluid.

The pressure difference across the pipe wall is equal to the local test pressure minus the local external pressure. For onshore pipelines use the ignore external pressure option.

CALCULATOR General Pipeline Test Pressure Factor And Hoop Stress Check From Test Pressure And Elevation Calculator [FREE LOGIN]

Calculate pipeline local test pressure factor and wall stress check from test pressure and elevation, using either Barlow's thin wall formula, or Lame's thick wall formula.

The local test pressure can be calculated from the test pressure at the test elevation for either single phase liquid test fluid, or single phase gas test fluid.

The local operating pressure can be calculated from the reference pressure and local elevation for either single phase oil, single phase water, single phase gas, two phase oil and water, or three phase black oil (oil, water and gas).

The test pressure factor is equal to the local test pressure divided by the local operating pressure.

The pressure difference across the pipe wall is equal to the local test pressure minus the local external pressure. For onshore pipelines use the ignore external pressure option.

CALCULATOR Pipeline Section Mass And Weight Per Length (Multi Layer Pipe) [Check] Calculator [FREE 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 Three Phase Black Oil Density Calculator [FREE LOGIN]

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).

INTERNET LINK US GPO : CFR 195 Hazardous Liquid Pipelines Internet Link
INTERNET LINK Wikipedia : Barlows Formula - Thin Wall Hoop Stress Internet Link
INTERNET LINK Wikipedia : Cylinder Stress Internet Link
INTERNET LINK Wikipedia : Pressure Measurement Internet Link
INTERNET LINK Wikipedia : Stress Mechanics Internet Link
INTERNET LINK Wikipedia : Yield Surface Internet Link
MODULE INDEX ASME Modules
CALCULATOR MODULE ASME B31.4 (2012) Liquid Pipeline Stress Intensity Factors 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 402.1-1). Refer to the figures for symbols.

Reference : ANSI/ASME B31.4 : Liquid Pipelines