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CALCULATOR MODULE : AS 2885.1 Gas And Liquid Pipeline Schedule ±
Calculate AS 2885.1 pipeline schedules for diameter, wall thickness, mass, weight, and stress. For AS 2885.1, the fabrication tolerance is included in the design factor. The fabrication tolerance is not required provided that the tolerance is within the relevant specification. Use the Result Table option to display schedule tables. Refer to the links below for other options. Reference : Australian Standard AS 2885.1 : Pipelines - Gas And Liquid Petroleum Part 1 : Design And Construction (2015) Change Module : |
CALCULATOR MODULE : AS 2885.1 Pipeline Wall Thickness ±
Calculate AS 2885.1 pipeline wall thickness from hoop stress for dry and submerged pipelines. Pipe wall thickness is governed by the maximum internal pressure for dry pipelines, or the maximum pressure difference for wet pipeline sections. For dry pipelines, the maximum internal pressure occurs at the lowest point on the pipeline or pipeline section. For wet oil and gas pipelines with internal fluid SG less than 1, the maximum pressure difference occurs at the highest submerged elevatin (eg the water surface). The required wall thickness should be calculated for each different section based on the primary and secondary location class. For each section, a wall thickness should be selected which is greater than or equal to the required wall thickness for the whole section. Use the Result Plot option to plot either the calculated wall thickness versus elevation, or the hoop stress versus elevation for the selected wall thickness. Wall thickness is calculated using Barlow's formula. The fabrication allowance is required for pipes where the fabrication tolerance exceeds the relevant specification (for example some seamless pipe). Reference : Australian Standard AS 2885.1 : Pipelines - Gas And Liquid Petroleum Part 1 : Design And Construction (2015) Change Module : |
CALCULATOR MODULE : AS 2885.1 Pipeline Hoop Stress ±
Calculate AS 2885.1 pipeline hoop stress from wall thickness and internal pressure. Hoop stress is calculated using Barlow's formula. Hoop stress can be calculated for either the nominal wall thickness, the minimum wall thickness (nominal thickness minus fabrication allowance), or the pressure design wall thickness (nominal wall thickness minus fabrication allowance and general allowance). The fabrication allowance is only required for pipes where the fabrication tolerance exceeds the relevant specification (for example some seamless pipe). Reference : Australian Standard AS 2885.1 : Pipelines - Gas And Liquid Petroleum Part 1 : Design And Construction (2015) Change Module : |
CALCULATOR MODULE : AS 2885.1 Pipeline Hydrotest Pressure ±
Calculate AS 2885.1 pipeline test pressure and hoop stress check. The required test pressure at the test point (the location where the test pressure is measured) is calculated from the local test pressure. The maximum test point pressure corresponds to the highest point on the pipeline. A test point pressure should be selected which is greater than or equal to the maximum calculated test point pressure, and the maximum hoop stress checked. For dry pipelines, the maximum hoop stress occurs at the lowest point on the pipeline. For wet pipeline sections, the maximum hoop stress occurs in the submerged section. Use the Result Plot option to plot the required test pressure versus elevation, or the hoop stress versus elevation for the selected test pressure. Hoop stress is calculated using Barlow's formula. For the case where the local internal pressure is assumed to be equal to the maximum operating pressure at all points on the pipeline, use the user defined local pressure option, and set the internal pressure equal to the maximum operating pressure. This option is more onerous. Note : A simplified check can be performed by calculating the maximum delta elevation from the maximum and minimum test pressure. Reference : Australian Standard AS 2885.1 : Pipelines - Gas And Liquid Petroleum Part 1 : Design And Construction (2015) Change Module : |
CALCULATOR MODULE : AS 2885.1 Pipeline Allowable Stress ±
Calculate AS 2885.1 pipeline yield stress and allowable stress. Select the appropriate stress table (API, ASM, DNV etc), material, and design factor. Use the Result Table option to display the results for the selected stress table (click the Result Table button on the plot bar, then click the make table button). The pressure design thickness equals the nominal wall thickness minus the corrosion allowance. The fabrication allowance is only required for pipes where the fabrication tolerance exceeds the relevant specification (for example some grades of seamless pipe). Reference : Australian Standard AS 2885.1 : Pipelines - Gas And Liquid Petroleum Part 1 : Design And Construction (2015) Change Module : |
CALCULATOR MODULE : AS 2885.1 Pipeline Bend Thickness ±
Calculate AS 2885.1 pipeline bend minimum fabrication thickness. Bend thickness checks are not required for cold field bends from straight pipe (ripples should be considered). For bends formed by other means such as induction bending, the fabricated thickness should be checked on both the inside of the bend (intrados), and the outside of the bend (extrados). Reference : Australian Standard AS 2885.1 : Pipelines - Gas And Liquid Petroleum Part 1 : Design And Construction (2015) Change Module : |
CALCULATOR MODULE : AS 2885.1 Pipeline Cold Bend Buckle ±
Calculate AS 2885.1 pipeline buckle wavelength and maximimum allowable buckle height for cold field bends. The approximate peak to peak buckle wavelength can be calculated for cold field bends. The maximum allowblae buckle height is 5% of the buckle wavelength. Reference : Australian Standard AS 2885.1 : Pipelines - Gas And Liquid Petroleum Part 1 : Design And Construction (2015) Change Module : |
CALCULATOR MODULE : AS 2885.1 Pipeline Local Pressure ±
Calculate AS 2885.1 pipeline local stationary pressure from elevation for dry and wet pipelines. For dry pipelines external pressure is ignored. For wet pipelines the external pressure is included. The internal fluid density is assumed constant. Use the Result Plot option to plot pressure versus elevation. Reference : Australian Standard AS 2885.1 : Pipelines - Gas And Liquid Petroleum Part 1 : Design And Construction (2015) Change Module : |
CALCULATOR MODULE : AS 2885.1 Pipeline Branch Reinforcement ±
Calculate AS 2885.1 pipeline welded branch reinforcement using the replacement area method. Branch reinforcement can be provided by pipe excess thickness, and by welded pad reinforcement. The reinforcement must be inside the reinforcement zone. Pad reinforcement can include additional equivalent width to account for welds, provided that the equivalent width is inside the reinforcement zone. The header, branch and reinforcement material should have similar properties. The reinforcement areas are factored if the branch or pad reinforcement allowable stress is less than the header allowable stress. Reference : Australian Standard AS 2885.1 : Pipelines - Gas And Liquid Petroleum Part 1 : Design And Construction (2015) Change Module : |
CALCULATOR MODULE : AS 2885.1 Pipeline Design Pressure ±
Calculate AS 2885.1 pipeline maximum allowable design pressure from pressure design wall thickness and allowable stress. The maximum allowable design pressure is calculated so that the hoop stress equals the allowable stress. Use the Result Table option to table the allowable pressure versus wall thickness for the selected pipe diameter schedule. Reference : Australian Standard AS 2885.1 : Pipelines - Gas And Liquid Petroleum Part 1 : Design And Construction (2015) Change Module : |
CALCULATOR MODULE : AS 2885.1 Pipeline Maximum Velocity ±
Calculate AS 2885.1 pipeline maximum allowable velocity for fluids subject to erosion. The erosional velocity is calculated from the fluid density and the C Factor (API RP 14E). The fluid density can be calculated for single phase, two phase, or three phase fluids. DNVGL RP-O501 can be used for erosion rate calculations. Transmission pipelines which are transporting clean fluids are not normally subject to erosion. Reference : Australian Standard AS 2885.1 : Pipelines - Gas And Liquid Petroleum Part 1 : Design And Construction (2015) Change Module : |
CALCULATOR MODULE : AS 2885.1 Pipeline Collapse Pressure ±
Calculate AS 2885.1 pipeline collapse pressure and collapse water depth for wet pipeline sections. Collapse pressure checks are only required for wet pipeline sections, or other cases where external pressure is applied. Reference : Australian Standard AS 2885.1 : Pipelines - Gas And Liquid Petroleum Part 1 : Design And Construction (2015) Change Module : |
CALCULATOR MODULE : AS 2885.1 Pipeline Road And Rail Crossing ±
Calculate AS 2885.1 pipeline road and rail crossing stress checks. The methodology is taken from API RP 1102. A design factor of 0.72 should be used for highway and railroad crossings. A factor of 0.9 can be used in other cases. The hoop stress check is not required. Reference : Australian Standard AS 2885.1 : Pipelines - Gas And Liquid Petroleum Part 1 : Design And Construction (2015) Change Module : |
CALCULATOR MODULE : AS 2885.1 Pipeline Fracture Toughness ±
Calculate AS 2885.1 pipeline critical defect length and fracture toughness. The critical defect length is calculated from the flow stress and the maximum hoop stress using the Folias factor Mt. The initiation crack length is assumed to be equal to 0.8 - 0.9 of the critical defect length. The required initiation fracture toughness can then be calculated from the initiation defect length. The required CVN is then calculated from the fracture toughness. Reference : Australian Standard AS 2885.1 : Pipelines - Gas And Liquid Petroleum Part 1 : Design And Construction (2015) Change Module : |
CALCULATOR MODULE : AS 2885.1 Pipeline Bolt Torque ±
Calculate AS 2885.1 pipeline flange bolt load, and bolt torque. The bolt preload is calculated from the internal pressure and the bending moment, with an applied design factor. The bolt torque can be calculated from the bolt preload. The bolt stress is calculated from the bolt load and the bolt tensile area. Reference : Australian Standard AS 2885.1 : Pipelines - Gas And Liquid Petroleum Part 1 : Design And Construction (2015) Change Module : |
CALCULATOR MODULE : AS 2885.1 Pipeline Fatigue Stress ±
Calculate AS 2885.1 pipeline fatigue stress and allowable cycles. A fatigue analysis is not required for stress amplitude less than or equal to 35 MPa. A fracture mechanics analysis is recommended for stress amplitude greater than 165 MPa. The fatigue curve is not valid for stress amplitude greater than 165 MPa. Reference : Australian Standard AS 2885.1 : Pipelines - Gas And Liquid Petroleum Part 1 : Design And Construction (2015) Change Module : |
CALCULATOR MODULE : AS 2885.1 Pipeline Combined Stress ±
Calculate AS 2885.1 pipeline longitudinal stress and combined stress. The stress check can be performed for longitudinal stress, Tresca stress and von Mises equivalent stress. Pipe axial load can be calculated for fully restrained pipe, unrestrained pipe, user defined external or global load, and user defined wall load. Bending moment can be calculated for in plane bending, out of plane bending, or combined in plane and out of plane bending. The stress concentration factors ii, io and it can be used for in plane, out of plane and torsion shear stress in pipe fittings. For straight pipe ii, io and it equal one. Reference : Australian Standard AS 2885.1 : Pipelines - Gas And Liquid Petroleum Part 1 : Design And Construction (2015) Change Module : |
CALCULATOR MODULE : AS 2885.1 Pipeline Mass And Weight ±
Calculate AS 2885.1 pipeline unit mass (mass per length), unit weight (weight per length), and total mass. The mass per joint can be calculated from the joint length. Construction quantities can be calculated from the total pipe length. Pipe unit mass (mass per length) and pipe unit weight (weight per length) can be calculated for multi layer pipelines (dry empty, dry full, wet empty and wet full pipelines). The pipe diameter can be defined by either the outside diameter or the inside diameter. For multi layer pipelines, the first internal layer is the line pipe. The line pipe diameter and thickness are calculated from the pipe schedule. Change the number of layers on the setup page. Use the Result Table option to display a table of pipe mass versus wall thickness for the selected diameter. Reference : Australian Standard AS 2885.1 : Pipelines - Gas And Liquid Petroleum Part 1 : Design And Construction (2015) Change Module : |
CALCULATOR MODULE : AS 2885.1 Pipeline Fluid Volume And Mass ±
Calculate AS 2885.1 pipeline fluid volume and fluid mass for two phase gas liquid piping, and three phase black oil piping (gas water and oil). The two phase fluid calculator can be used for single phase gas, single phase liquid, or two phase gas and liquid. The three phase black oil calculator can be used for single phase oil, single phase water, two phase oil and water, and three phase oil, water and gas. Water cut is the volume fraction of water in the liquid phase (ignoring the gas phase). Gas oil ratio (GOR) is the ratio of gas moles to liquid volume (ignoring the water phase). Gas moles are commonly measured as gas volume at standard conditions, eg SCM (Standard Conditions Meter) or SCF (Standard Conditions Feet). Reference : Australian Standard AS 2885.1 : Pipelines - Gas And Liquid Petroleum Part 1 : Design And Construction (2015) Change Module : |
CALCULATOR MODULE : AS 2885.1 Pipeline Fluid Velocity And Flow Rate ±
Calculate AS 2885.1 pipeline fluid velocity and flow rate for two phase gas liquid piping, and three phase black oil piping (gas water and oil). The two phase fluid calculator can be used for single phase gas, single phase liquid, or two phase gas and liquid. The three phase black oil calculator can be used for single phase oil, single phase water, two phase oil and water, and three phase oil, water and gas. Water cut is the volume fraction of water in the liquid phase (ignoring the gas phase). Gas oil ratio (GOR) is the ratio of gas moles to liquid volume (ignoring the water phase). Gas moles are commonly measured as gas volume at standard conditions, eg SCM (Standard Conditions Meter) or SCF (Standard Conditions Feet). Reference : Australian Standard AS 2885.1 : Pipelines - Gas And Liquid Petroleum Part 1 : Design And Construction (2015) Change Module : |