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ASME B31.5 Refrigeration Piping Blank Flange And Closure

Calculate ASME B31.5 refrigeration piping blank flange and flat plate closure wall thickness.

Use the workbook ASME B31.5 data tables to look up allowable stress data.

Reference : ANSI/ASME B31.5 : Refrigeration Piping And Heat Transfer Components (2013)

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CALCULATOR : ASME B31.5 Section 504.1 Pipe Schedule Diameter And Wall Thickness [FREE]   ±

Calculate ASME B31.5 pipe diameter, minimum wall thickness and pressure design thickness from pipe schedule or user defined diameter and wall thickness (ASME B31.5 section 504.1).

Select the pipe schedule (NPS or ISO), pipe diameter and wall thickness, or use the user defined option. Use the Result Table option to display the pipe schedule with nominal wall thickness, minimum wall thickness and pressure design wall thickness for the selected diameter.

Tool Input

  • schdtype : Schedule Type
  • diamtype : Diameter Type
    • ODu : User Defined Outside Diameter
    • IDu : User Defined Inside Diameter
  • wtntype : Wall Thickness Type
    • tnu : User Defined Wall Thickness
  • ttoltype : Wall Thickness Fabrication Tolerance Type
    • txu : User Defined Negative Wall Thickness Fraction
    • tfu : User Defined Negative Wall Thickness Allowance
  • c : Wall Thickness Corrosion Allowance

Tool Output

  • ID : Nominal Inside Diameter
  • OD : Nominal Outside Diameter
  • OD/tn : Diameter Over Wall Thickness Ratio
  • tf : Wall Thickness Fabrication Allowance
  • tm : Minimum Wall Thickness
  • tn : Nominal Wall Thickness
  • tp : Pressure Design Wall Thickness
  • tx : Wall Thickness Fabrication Fraction
CALCULATOR : ASME B31.5 Section 504.5 Pipe Blank Wall Thickness [FREE]   ±

Calculate pipe blank wall thickness from internal pressure (ASME B31.5 section 504.5).

Tool Input

  • ttoltype : Blank Thickness Tolerance Type
    • xfu : User Defined Negative Wall Thickness Fraction
    • tfu : User Defined Negative Wall Thickness Allowance
  • dg : Gasket Inside Diameter
  • c : Corrosion Allowance
  • P : Internal Pressure
  • S : Design Stress

Tool Output

  • t : Pressure Containment Blank Thickness
  • tf : Blank Thickness Fabrication Allowance
  • tm : Minimum Blank Thickness
  • tn : Nominal Blank Thickness
  • xf : Blank Thickness Fabrication Fraction
CALCULATOR : ASME B31.5 Section 504.4 Pipe Flat Plate Closure Wall Thickness [FREE]   ±

Calculate pipe flat plate closure wall thickness from internal pressure (ASME B31.5 section 504.4).

Tool Input

  • schdtype : Pipe Schedule Type
  • diamtype : Diameter Type
    • ODu : User Defined Outside Diameter
    • IDu : User Defined Inside Diameter
  • wtntype : Wall Thickness Type
    • tnu : User Defined Wall Thickness
  • ttoltypep : Pipe Wall Thickness Fabrication Tolerance Type
    • xfpu : User Defined Pipe Negative Wall Thickness Fraction
    • tfpu : User Defined Pipe Negative Wall Thickness Allowance
  • ttoltypec : Closure Wall Thickness Fabrication Tolerance Type
    • xfcu : User Defined Closure Negative Wall Thickness Fraction
    • tfcu : User Defined Closure Negative Wall Thickness Allowance
  • c : Corrosion Allowance
  • P : Internal Pressure
  • S : Design Stress

Tool Output

  • C : Closure Wall Thickness Factor
  • D : Pipe Nominal Outside Diameter
  • d : Pipe Nominal Inside Diameter
  • tfc : Closure Wall Thickness Fabrication Allowance
  • tfp : Pipe Wall Thickness Fabrication Allowance
  • tmc : Closure Minimum Wall Thickness
  • tmp : Pipe Minimum Wall Thickness
  • tnc : Closure Nominal Wall Thickness
  • tnp : Pipe Nominal Wall Thickness
CALCULATOR : Line Pipe Wall Thickness Tolerance (General) [FREE]   ±

Calculate general pipeline maximum and minimum wall thickness from nominal wall thickness and tolerance.

Tolerance can be defined as either the fraction / percentage tolerance, or wall thickness allowance. All tolerances should be entered as positive values. Use the Result Table option to display a table of maximum and minimum wall thickness versus nominal wall thickness for the selected diameter.

Tool Input

  • schdtype : Schedule Type
  • diamtype : Diameter Type
    • ODu : User Defined Outside Diameter
    • IDu : User Defined Inside Diameter
  • wtntype : Wall Thickness Type
    • tnu : User Defined Wall Thickness
  • toltypew : Wall Thickness Tolerance Type
    • tfxu+ : User Defined Positive Wall Thickness Fraction
    • tfxu- : User Defined Negative Wall Thickness Fraction
    • tfau+ : User Defined Positive Wall Thickness Allowance
    • tfau- : User Defined Negative Wall Thickness Allowance

Tool Output

  • ID : Nominal Inside Diameter
  • OD : Nominal Outside Diameter
  • OD/tn : Diameter Over Wall Thickness Ratio
  • tfa+ : Positive Wall Thickness Allowance
  • tfa- : Negative Wall Thickness Allowance
  • tfx+ : Positive Wall Thickness Fraction
  • tfx- : Negative Wall Thickness Fraction
  • tmax : Maximum Wall Thickness
  • tmin : Minimum Wall Thickness
  • tn : Nominal Wall Thickness
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