EN 12516-2:2014+A1:2021

Industrial valves - Shell design strength - Part 2: Calculation method for steel valve shells

This European Standard specifies the method for the strength calculation of the shell with respect to internal pressure of the valve.

Industriearmaturen - Gehäusefestigkeit - Teil 2: Berechnungsverfahren für drucktragende Gehäuse von Armaturen aus Stahl

Diese Europäische Norm legt das Verfahren zur Berechnung der Festigkeit des drucktragenden Gehäuses gegen den Innendruck der Armatur fest.

Robinetterie industrielle - Résistance mécanique des enveloppes - Partie 2 : Méthode de calcul relative aux enveloppes d'appareils de robinetterie en acier

La présente Norme européenne spécifie la méthode de calcul de la résistance de l'enveloppe par rapport à la pression intérieure de l’appareil de robinetterie.

Industrijski ventili - Trdnost ohišja - 2. del: Metoda za izračun ohišij jeklenih ventilov

General Information

• Status: Published
• Publication Date: 26-Oct-2021
• Withdrawal Date: 29-Apr-2022
• ICS: 23.060.01 - Valves in general
• Technical Committee: CEN/TC 69 - Industrial valves
• Drafting Committee: CEN/TC 69/WG 1 - Basic standards
• Current Stage: 6060 - Definitive text made available (DAV) - Publishing
• Start Date: 27-Oct-2021
• Completion Date: 27-Oct-2021
• 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
• Mandate: M/071 - Mandate to CEN for standardization in the field of Pressure equipment
• Ref Project: SIST EN 12516-2:2015+A1:2021 - Industrial valves - Shell design strength - Part 2: Calculation method for steel valve shells

Relations

• Merged From: EN 12516-2:2014 - Industrial valves - Shell design strength - Part 2: Calculation method for steel valve shells
• Effective Date: 19-Jan-2023
• Merged From: EN 12516-2:2014/FprA1 - Industrial valves - Shell design strength - Part 2: Calculation method for steel valve shells
• Effective Date: 19-Jan-2023

Standards Content (Sample)

SLOVENSKI STANDARD
01-december-2021
Industrijski ventili - Trdnost ohišja - 2. del: Metoda za izračun ohišij jeklenih
ventilov
Industrial valves - Shell design strength - Part 2: Calculation method for steel valve shells
Industriearmaturen - Gehäusefestigkeit - Teil 2: Berechnungsverfahren für
drucktragende Gehäuse von Armaturen aus Stahl
Robinetterie industrielle - Résistance mécanique des enveloppes - Partie 2 : Méthode de
calcul relative aux enveloppes d'appareils de robinetterie en acier
Ta slovenski standard je istoveten z: EN 12516-2:2014+A1:2021
ICS:
23.060.01 Ventili na splošno Valves in general
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN 12516-2:2014+A1
EUROPEAN STANDARD
NORME EUROPÉENNE
October 2021
EUROPÄISCHE NORM
ICS 23.060.01 Supersedes EN 12516-2:2014
English Version
Industrial valves - Shell design strength - Part 2:
Calculation method for steel valve shells
Robinetterie industrielle - Résistance mécanique des Industriearmaturen - Gehäusefestigkeit - Teil 2:
enveloppes - Partie 2 : Méthode de calcul relative aux Berechnungsverfahren für drucktragende Gehäuse von
enveloppes d'appareils de robinetterie en acier Armaturen aus Stahl
This European Standard was approved by CEN on 9 August 2014 and includes Amendment 1 approved by CEN on 6 September
2021.
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, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
Poland, Portugal, Republic of North Macedonia, Romania, Serbia, 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: Rue de la Science 23, B-1040 Brussels
© 2021 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 12516-2:2014+A1:2021 E
worldwide for CEN national Members.

Contents Page
European foreword . 4
1 Scope . 7
2 Normative references . 7
3 Symbols and units . 7
4 General conditions for strength calculation . 13
5 Design pressure . 14
6 Nominal design stresses for pressure parts other than bolts . 14
6.1 General . 14
6.2 Steels and cast steels other than defined in 6.3, 6.4 or 6.5. 15
6.3 !Austenitic steel and austenitic cast steel with a minimum rupture elongation > 30
%" . 16
6.4 !Austenitic steel and austenitic cast steel with a minimum rupture elongation > 35
%" . 16
6.5 Ferritic and martensitic cast steel . 16
6.6 Creep conditions . 16
7 Calculation methods for the wall thickness of valve bodies . 16
7.1 General . 16
7.2 Wall thickness of bodies and branches outside crotch area . 17
7.2.1 General . 17
7.2.2 Cylindrical bodies or branches . 17
7.2.3 Spherical bodies or branches . 18
7.2.4 Conical bodies or branches . 18
7.2.5 Bodies or branches with oval or rectangular cross-sections . 20
7.3 Wall thickness in the crotch area . 27
7.4 Examples of pressure-loaded areas Ap and metallic cross-sectional areas Af . 28
7.4.1 General . 28
7.4.2 Cylindrical valve bodies . 29
7.4.3 Spherical valve bodies . 31
7.4.4 Oval and rectangular cross-sections . 32
7.4.5 Details . 33
8 Calculation methods for bonnets and covers . 36
8.1 General . 36
8.2 Covers made of flat plates . 36
8.2.1 General . 36
8.2.2 Circular cover without opening, with . 41
8.2.3 Circular covers with concentric circular opening, with . 42
8.2.4 Non-circular covers (elliptical or rectangular) . 43
8.2.5 Special covers made of flat circular plates for specific load and clamping conditions . 44
8.3 Covers consisting of a spherically domed end and an adjoining flanged ring . 59
8.3.1 General . 59
8.3.2 Wall thickness and strength calculation of the spherical segment . 60
8.3.3 Calculation of the flanged ring. 61
8.3.4 Reinforcement of the stuffing box area . 63
8.4 Dished heads . 63
8.4.1 General remarks . 63
8.4.2 Solid dished heads . 64
8.4.3 Dished heads with opening . 65
8.4.4 Allowances on the wall thickness . 67
9 Calculation method for pressure sealed bonnets and covers. 68
10 Calculation methods for flanges . 70
10.1 General . 70
10.2 Circular flanges . 70
10.2.1 General . 70
10.2.2 Flanges with tapered neck . 71
10.2.3 Flanges greater than DN 1 000. 73
10.2.4 Welding neck with tapered neck according to Figure 48 . 74
10.2.5 Weld-on flanges . 75
10.2.6 Reverse flanges . 78
10.2.7 Loose flanges . 78
10.3 Oval flanges . 80
10.3.1 Oval flanges in accordance with Figure 54 . 80
10.3.2 Oval flanges in accordance with Figure 55 . 82
10.4 Rectangular or square flanges . 84
10.4.1 Rectangular or square flanges in accordance with Figure 57 . 84
10.4.2 Rectangular slip-on flanges in accordance with Figure 58 . 85
10.5 Calculation of the bolt diameter . 86
10.5.1 Design temperature . 86
10.5.2 Diameter of the nominal tensile stress . 86
10.5.3 Load cases . 86

10.5.4 Safety factors and allowances . 87
11 Calculation methods for glands . 87
11.1 Loads . 87
11.2 Gland bolts . 88
11.3 Gland flanges . 88
11.4 Other components . 88
12 Fatigue . 88
13 Marking .
...