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API RP 1102 Pipeline Design Stress And Design Pressure

Calculate API RP 1102 pipeline allowable stress and maximum allowable design pressure from wall thickness.

The allowable stress is calculated from the SMYS, diameter and wall thickness. The allowable pressure is calculated so that the hoop stress equals the allowable stress, allowing for pipe wall allowances. Use the Result Table option to display the calculated stress and allowable pressure values.

Reference : API RP 1102 : Steel Pipelines Crossing Railroads and Highways (2012)

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CALCULATOR : API RP 1102 Allowable Stress And Maximum Design Pressure [FREE]   ±

Calculate API RP 1102 pipeline allowable stress and maximum allowable design pressure.

The allowable stress is calculated from the SMYS, diameter and wall thickness. The maximum allowable design pressure is the maximum pressure for the allowable stress, including pipe wall allowances.

Tool Input

  • schdtype : Line 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 : Line Pipe Stress Type
  • mattype : Material Type
    • SMYSu : User Defined Specified Minimum Yield Stress
  • efactype : Weld Joint Quality Factor Type
    • Eu : User Defined Quality Factor
  • tfactype : Temperature Derating Factor Type
    • Td : Design Temperature
    • Tu : User Defined Temperature Reduction Factor
  • loctype : Pipe Location Class
    • Fu : User Defined Design Stress Factor
  • pipetype : Pipe Section Type
  • tc : Corrosion Allowance

Tool Output

  • E : Weld Joint Factor
  • F : Design Stress Factor
  • ID : Pipe Inside Diameter
  • OD : Pipe Outside Diameter
  • OD/tn : Pipe Diameter Over Wall Thickness Ratio
  • PR : Rated Pressure
  • SEFT : Allowable Stress
  • SMYS : Yield Stress
  • T : Temperature Reduction Factor
  • t : Pipe Pressure Containment Wall Thickness
  • tn : Pipe Nominal Wall Thickness