EN 1591 · Flange joints

EN 1591 Flange Calculation Software

sPEeD-Analyze performs calculations to EN 1591 for gasketed circular flange connections — bolt load, gasket seating and leak-tightness — traceable to the exact clause and formatted for approval by your notified body.

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The Standard

Calculation for gasketed flange joints

EN 1591-1 is the harmonised European calculation method for gasketed circular flange connections. It verifies the bolt load, gasket seating and leak-tightness of the joint across assembly, test and operating conditions — the analysis required to certify a flanged connection under the Pressure Equipment Directive (PED).

sPEeD-Analyze implements EN 1591 directly: every result references the exact formula and clause in the standard, using the standard’s own nomenclature, so your calculation is unambiguous and fast for a notified body to review.

Benefits

Why engineers calculate EN 1591 in sPEeD-Analyze

  • Fast calculations — minutes instead of days in spreadsheet

  • Correct interpretation of EN 1591-1, with input validation

  • Large built-in material library for flanges, bolts and gaskets

  • Leak-tightness verified across assembly, test and operating load cases

  • Exchange data with your other EN calculations despite differing nomenclature

Scope covered

What EN 1591 verifies

  • Circular gasketed flange joints

  • Required bolt load and pre-load

  • Gasket seating and leak-tightness class

  • Flange, bolt and gasket material properties

  • Multiple load cases: assembly, test and operating conditions

  • Assessment of flange, bolts and gasket together as a system

The deliverable

A report your notified body will accept

sPEeD-Analyze produces a structured EN 1591 calculation report — load cases, utilisation and pass/fail for the joint, and project and approval fields built in — ready to submit.

  • Component overview with utilisation and pass/fail per part

  • Project, client and approval fields built in

  • Consistent layout across every calculation

Calculate your EN 1591 flange joint with confidence

Book a demo — bring a real flanged-joint case and we’ll walk through the EN 1591 calculation and the report it produces.

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