EN 1591-1:2013

Flanges and their joints - Design rules for gasketed circular flange connections - Part 1: Calculation

This European Standard defines a calculation method for bolted, gasketed, circular flange joints. Its purpose is to ensure structural integrity and control of leak tightness. It uses gasket parameters based on definitions and test methods specified in EN 13555.
The calculation method is not applicable to joints with a metallic contact out of the sealing face or to joints whose rigidity varies appreciably across gasket width. For gaskets in incompressible materials, which permit large deformations, the results given by the calculation method can be excessively conservative (i.e. required bolting load too high, allowable pressure of the fluid too low, required flange thickness too large, etc.).

Flansche und ihre Verbindungen - Regeln für die Auslegung von Flanschverbindungen mit runden Flanschen und Dichtung - Teil 1: Berechnung

Diese Europäische Norm legt eine Berechnungsmethode für Flanschverbindungen mit runden Flanschen, Schrauben und Dichtung fest. Sie hat den Zweck, die Festigkeit der Konstruktion sicherzustellen und die Dichtigkeit zu kontrollieren. Dafür werden Dichtungskennwerte angewendet, die auf Definitionen und Prüf-verfahren nach EN 13555 beruhen.
Die Berechnungsmethode ist nicht anwendbar auf Flanschverbindungen mit einem metallischen Dichtflächen-kontakt und auf Flanschverbindungen, deren Steifigkeit über die Dichtungsbreite stark schwankt. Bei Dichtungen in unelastischen Werkstoffen, die starke Verformungen zulassen, können die Ergebnisse nach dieser Berechnungsmethode übermäßig konservativ sein (d. h. erforderliche Schraubenkraft zu hoch, zulässiger Mediendruck zu gering, erforderliche Flanschdicke zu groß usw.).

Brides et leurs assemblages - Règles de calcul des assemblages à brides circulaires avec joint - Partie 1: Méthode de calcul

La présente Norme européenne définit une méthode de calcul des assemblages à brides circulaires boulonnés avec joint. Son objectif est d'en assurer l'intégrité structurale et la maîtrise de l'étanchéité. Elle utilise des paramètres de joints basés sur les définitions et les modes opératoires d'essais spécifiés dans l'EN 13555.
La méthode de calcul ne s'applique pas aux assemblages à contact métallique en dehors de la face d'étanchéité ni aux assemblages dont la rigidité varie de façon notable sur la largeur du joint. En ce qui concerne les joints en matériau incompressible qui présentent des déformations importantes, les résultats fournis par la méthode de calcul peuvent être excessivement conservateurs (c'est-à-dire effort de boulonnage requis trop élevé, pression admissible de fluide trop faible, épaisseur de bride nécessaire trop importante, etc.).

Prirobnice in prirobnični spoji - Pravila za konstruiranje prirobničnih spojev, sestavljenih iz okroglih prirobnic in tesnil - 1. del: Izračun

General Information

• Status: Withdrawn
• Publication Date: 17-Dec-2013
• Withdrawal Date: 01-Oct-2024
• ICS: 23.040.60 - Flanges, couplings and joints
• Technical Committee: CEN/TC 74 - Flanges and their joints
• Drafting Committee: CEN/TC 74/WG 10 - Calculation methods
• Directive: 2014/68/EU - Directive 2014/68/EU of the European Parliament and of the Council of 15 May 2014 on the harmonisation of the laws of the Member States relating to the making available on the market of pressure equipment
• Directive: 97/23/EC - Directive 97/23/EC of the European Parliament and of the Council of 29 May 1997 on the approximation of the laws of the Member States concerning pressure equipment
• Mandate: M/071 - Mandate to CEN for standardization in the field of Pressure equipment
• Ref Project: SIST EN 1591-1:2014 - Flanges and their joints - Design rules for gasketed circular flange connections - Part 1: Calculation

Relations

• Replaces: EN 1591-1:2001+A1:2009 - Flanges and their joints - Design rules for gasketed circular flange connections - Part 1: Calculation method
• Effective Date: 25-Dec-2013
• Replaces: EN 1591-1:2001+A1:2009/AC:2011 - Flanges and their joints - Design rules for gasketed circular flange connections - Part 1: Calculation method
• Effective Date: 25-Dec-2013
• Replaced By: EN 1591-1:2024 - Flanges and their joints - Design rules for gasketed circular flange connections - Part 1: Calculation
• Effective Date: 18-Jan-2023

Standards Content (Sample)

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Flansche und Flanschverbindungen - Regeln für die Auslegung von Flanschverbindungen mit runden Flanschen und Dichtung - Teil 1: BerechnungBrides et leurs assemblages - Règles de calcul des assemblages à brides circulaires avec joint - Partie 1: Méthode de calculFlanges and their joints - Design rules for gasketed circular flange connections - Part 1: Calculation23.040.60Prirobnice, oglavki in spojni elementiFlanges, couplings and jointsICS:Ta slovenski standard je istoveten z:EN 1591-1:2013SIST EN 1591-1:2014en,fr,de01-februar-2014SIST EN 1591-1:2014SLOVENSKI
STANDARDSIST EN 1591-1:2002+A1:2009/AC:2011SIST EN 1591-1:2002+A1:20091DGRPHãþD

EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 1591-1
December 2013 ICS 23.040.60 Supersedes EN 1591-1:2001+A1:2009English Version
Flanges and their joints - Design rules for gasketed circular flange connections - Part 1: Calculation
Brides et leurs assemblages - Règles de calcul des assemblages à brides circulaires avec joint - Partie 1: Méthode de calcul
Flansche und ihre Verbindungen - Regeln für die Auslegung von Flanschverbindungen mit runden Flanschen - Teil 1: Berechnung This European Standard was approved by CEN on 12 October 2013.
CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management Centre has the same status as the official versions.
CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre:
Avenue Marnix 17,
B-1000 Brussels © 2013 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 1591-1:2013 ESIST EN 1591-1:2014

Dimensions of standard metric bolts . 43 Annex B (informative)
Tightening . 44 B.1 Scatter of initial bolt load of a single bolt — Indicative values 01- and 01+ for a single bolt . 44 B.2 Scatter for the global load of all the bolts. 44 B.3 Manual uncontrolled tightening . 45 B.4 Assembly using torque wrench . 45 B.5 Assembly using bolt tensioner . 46 Annex C (informative)
Flange rotations . 48 C.1 General . 48 C.2 Use of flange rotation. 48 C.3 Calculation of flange rotations . 48 Annex D (informative)
Use of the calculation method . 50 D.1 Calculation method principle . 50 D.2 Mechanical model . 51 D.3 Required checks . 52 D.4 Calculation sequence. 52 Annex E (informative)
Gasket/flange face friction coefficients examples . 54 Annex F (normative)
Determination of ∆eGc,I based on a given PQR . 55 F.1 Determination of the deflection occurring during a PQR test . 55 F.2 Determination of the deflection to be taken into account in the calculation . 56 Annex G (informative)
Sealing gasket parameter when no leakage rate is specified . 57 Annex H (informative)
Alternative calculation procedure taking into account the plastic deformation of the gasket in subsequent load conditions procedures (after assembly) . 58 H.1 Introduction .
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