EN 12516-2:2014/prA1:2019

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

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

Industrijski ventili - Trdnost ohišja - 2. del: Metoda za izračun ohišij jeklenih ventilov - Dopolnilo A1

Standards Content (sample)

SLOVENSKI STANDARD
SIST EN 12516-2:2015/oprA1:2019
01-december-2019

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

ventilov - Dopolnilo A1

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/prA1:2019
ICS:
23.060.01 Ventili na splošno Valves in general
SIST EN 12516-2:2015/oprA1:2019 en,fr,de

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN 12516-2:2015/oprA1:2019
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SIST EN 12516-2:2015/oprA1:2019
DRAFT
EUROPEAN STANDARD
EN 12516-2:2014
NORME EUROPÉENNE
EUROPÄISCHE NORM
prA1
October 2019
ICS 23.060.01
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 draft amendment is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee CEN/TC 69.

This draft amendment A1, if approved, will modify the European Standard EN 12516-2:2014. If this draft becomes an

amendment, CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for

inclusion of this amendment into the relevant national standard without any alteration.

This draft amendment was established by CEN 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.

Recipients of this draft are invited to submit, with their comments, notification of any relevant patent rights of which they are

aware and to provide supporting documentation.

Warning : This document is not a European Standard. It is distributed for review and comments. It is subject to change without

notice and shall not be referred to as a European Standard.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels

© 2019 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 12516-2:2014/prA1:2019:2019 E

worldwide for CEN national Members.
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SIST EN 12516-2:2015/oprA1:2019
EN 12516-2:2014/prA1:2019 (E)
Contents

European foreword ....................................................................................................................................................... 3

1 Modification to Clause 2................................................................................................................................ 4

2 Modifications to Clause 3.............................................................................................................................. 4

3 Modification to Clause 4................................................................................................................................ 9

4 Modification to Clause 6.1 ......................................................................................................................... 10

5 Modification to Clause 6.3 ......................................................................................................................... 10

6 Modification to Clause 6.4 ......................................................................................................................... 10

7 Modification to Clause 7.1 ......................................................................................................................... 11

8 Modification to Clause 7.2.1 ..................................................................................................................... 11

9 Modification to Clause 7.2.2 ..................................................................................................................... 11

10 Modification to Clause 7.2.3 ..................................................................................................................... 11

11 Modification to Clause 7.2.5.1 .................................................................................................................. 11

12 Modification to Clause 7.2.5.3 .................................................................................................................. 11

13 Modification to Clause 7.3 ......................................................................................................................... 12

14 Modification to Clause 8.3.1 ..................................................................................................................... 12

15 Modifications to Clause 8.3.3.2 ................................................................................................................ 13

16 Modification to Clause 10.3.1 ................................................................................................................... 13

17 Modification to Clause 10.3.2 ................................................................................................................... 13

18 Modification to Clause 10.4.1 ................................................................................................................... 14

19 Modification to Clause 10.5.1 ................................................................................................................... 14

20 Modification to Table A.1 .......................................................................................................................... 15

21 Modifications to Annex ZA ........................................................................................................................ 16

Annex ZA (informative) Relationship between this European Standard and the essential

requirements of Directive 2014/68/EU aimed to be covered ..................................................... 17

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SIST EN 12516-2:2015/oprA1:2019
EN 12516-2:2014/prA1:2019 (E)
European foreword

This document (EN 12516-2:2014/prA1:2019) has been prepared by Technical Committee CEN/TC 69

“Industrial valves”, the secretariat of which is held by AFNOR.
This document is currently submitted to the CEN Enquiry.

This document has been prepared under a standardization request given to CEN by the European

Commission and the European Free Trade Association, and supports essential requirements of EU

Directive 2014/68/EU.

For relationship with EU Directive 2014/68/EU, see informative Annex ZA which is an integral part of

this document.
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SIST EN 12516-2:2015/oprA1:2019
EN 12516-2:2014/prA1:2019 (E)
1 Modification to Clause 2

Replace “EN 19:2002, Industrial valves — Marking of metallic valves” by “EN 19:2016, Industrial

valves — Marking of metallic valves”

Replace “EN 13445-3:2014, Unfired pressure vessels — Part 3: Design” by “EN 13445-3:2014/A3:2017,

Unfired pressure vessels — Part 3: Design”
2 Modifications to Clause 3
Replace Table 1 by the following.
Table 1 — Symbols characteristics and units
Symbol Unit Characteristic
mm lever arm for horizontal force
mm lever arm for bolt force
mm lever arm for vertical force
B — calculation coefficient to determine the thickness of the flange
— calculation coefficient for oval and rectangular cross-sections
1…3
— correction factor for oval flanges
B , B
— calculation coefficient for flat circular plates
FI FII
— calculation coefficient to determine the thickness of the flange
B , B
— calculation coefficient for flat circular plates
MI MII
B , B
— calculation coefficient for flat circular plates
PI PII
b mm double flange width
mm minor width in oval and rectangular cross section
mm major width in oval and rectangular cross section
b , b
mm width of the seal
D1 D2
mm width in oval and rectangular cross section
mm width of the seal
mm effective width for reinforcement
C ,C ,C
— calculation coefficient for covers made of flat plates
x y z
C –– calculation coefficient for lens-shaped gaskets
c mm design allowance for bolts
mm fabrication tolerance
mm standardized corrosion and erosion allowance
mm outside diameter
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SIST EN 12516-2:2015/oprA1:2019
EN 12516-2:2014/prA1:2019 (E)
Symbol Unit Characteristic
d , d'
mm diameter in base body
0 0
d , d mm diameter for self-sealing closure
01 02
mm diameter in branch
mm diameter in further branch
mm outside diameter of collar flange
mm outside diameter of the plate/cover
mm outside flange diameter
mm inside diameter
mm diameter of the biggest inscribed circle
mm diameter in knuckle
mm diameter in corner welds
mm hole diameter
mm reduced bolt hole diameter
mm mean diameter of the plate/cover
mm mean diameter of the face (see Figure 28)
mm mean diameter
mm mean diameter of the seal
mm required bolt diameter
mm bold circle diameter/reference circle diameter
mm diameter of centre of gravity
mm stuffing box outside diameter
ast
mm stuffing box inside diameter
ist
mm calculated bolt diameter without design allowance
mm diameter of the vertical force at the cone
E MPa modulus of elasticity
MPa modulus of elasticity for material of the seal
mm wall thickness
mm wall thickness (final/actual)
e actual wall thickness less c and c
acn 1 2
mm thickness of flange neck
acF
e calculated theoretical minimum wall thickness, without c and c
cn 1 2
N minimum bolt force for the assembly condition
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SIST EN 12516-2:2015/oprA1:2019
EN 12516-2:2014/prA1:2019 (E)
Symbol Unit Characteristic
N flange force
N horizontal component force
N bolt force for operating conditions
N minimum bolt force
N bolt force for assembly conditions
N tensile force
N vertical force at the cone
N additional force
f MPa nominal design stress
maximum value of the nominal design stress for normal operating load
MPa
cases
MPa nominal design stress for design conditions at temperature t °C
d/t
g , g
mm welding throat depth
1 2
h mm plate thickness
mm minimum height for the seating shoulder
mm minimum height of the inserted ring
mm minimum depth of the sealing ledge
mm plate thickness
mm height of flange hub
mm plate thickness
mm thickness of flange
mm reduced plate thickness
— welding factor
l mm length
mm effective length for cylindrical bodies
0…3
l' mm length which is influenced by the entry nozzle
mm length for calculating body shapes in cross section II
∩l3 mm length for calculating body shapes in cross section II
M Nm external moment
M summary of moments M , M , M
i P F M
Nm external moment
Nm moment for assembly condition
Nm moment for operation condition
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SIST EN 12516-2:2015/oprA1:2019
EN 12516-2:2014/prA1:2019 (E)
Symbol Unit Characteristic
Nm single force (point force)
Nm maximum bending moment
max
Nm rim moment
Nm resulting moment from internal pressure
Nm bending moment in radial direction
Nm bending moment in tangential direction
m –– gasket coefficient
n –– number of bolts
–– load carrying factor
p MPa pressure
MPa calculation pressure
MPa design pressure
MPa contact pressure
PS MPa maximum allowable pressure
R mm radius for calculating load cases
MPa upper yield strength
MPa upper yield strength at temperature t °C
eH/t
mm inner Radius of spherical cap
MPa tensile strength
MPa tensile strength at temperature t °C
m/t
MPa creep rupture strength for T hours at temperature t °C
m/T/t
MPa 0,2 % - proof strength
p0,2
MPa 0,2 % - proof strength at temperature t °C
p0,2/t
MPa 0,2 % - proof strength at test temperature t °C
p0,2/t Test
MPa 1,0 % - proof strength at test temperature t °C
p1,0/t Test
MPa
...