EN 13445-6:2021

Unfired pressure vessels - Part 6: Requirements for the design and fabrication of pressure vessels and pressure parts constructed from spheroidal graphite cast iron

This document specifies requirements for the design, materials, manufacturing and testing of pressure vessels and pressure vessel parts intended for use with a maximum allowable pressure, PS, equal or less than:
- 100 bar when containing gases or liquids in group 1 or 2
- 1000 bar when containing liquids in group 2 only.
and shell wall thicknesses not exceeding 60 mm, which are constructed of ferritic or austenitic spheroidal graphite cast iron. The thickness limitation of the shell does not apply to thickness of flanges, reinforcements, bosses etc.
NOTE 1 Austenitic spheroidal graphite cast iron grades are principally used for high and low temperature applications and for their corrosion resistance properties.
NOTE 2 The allowable grades of spheroidal graphite cast iron are listed in Tables 5.1-1 and 5.1-2. Service conditions are given in Clause 4.
This document, EN 13445-6, does not include lamellar graphite cast iron grades for ferritic and austenitic grades with, with an elongation after fracture equal or less than 15 % which are explicitly excluded. Requirements for the use of cast irons with an elongation after fracture equal or less than 15 % are given in EN 15776.

Unbefeuerte Druckbehälter - Teil 6: Anforderungen an die Konstruktion und Herstellung von Druckbehältern und Druckbehälterteilen aus Gusseisen mit Kugelgraphit

Diese Europäische Norm legt Anforderungen an Konstruktion, Werkstoffe, Herstellung und Prüfung von Druckbehältern und Druckbehälterteilen aus ferritischem oder austenitischem Gusseisen mit Kugelgraphit fest, die für den Betrieb mit einem maximal zulässigen Druck PS gleich oder kleiner als:
- 100 bar bei Befüllung mit Gasen oder Flüssigkeiten der Gruppe 1 oder 2;
- 1 000 bar nur bei Befüllung mit Flüssigkeiten der Gruppe 2.
und einer maximalen Wanddicke von 60 mm vorgesehen sind. Die Grenzwerte für die Schalenwanddicke gelten nicht für die Dicke von Flanschen, Verstärkungen, Nocken usw.
ANMERKUNG 1 Austenitische Gusseisensorten mit Kugelgraphit werden hauptsächlich für Anwendungsfälle in hohen und niedrigen Temperaturbereichen und aufgrund ihrer Korrosionsbeständigkeit eingesetzt.
ANMERKUNG 2 Die zulässigen Gusseisensorten mit Kugelgraphit sind in den Tabellen 5.1-1 und 5.1-2 aufgelistet. Die Betriebs¬bedingungen sind in Abschnitt 4 angegeben.
Diese Europäische Norm, EN 13445 6, behandelt keine ferritischen und austenitischen Gusseisensorten mit Lamellengraphit mit einer Bruchdehnung ≤ 15 %, welche ausdrücklich ausgeschlossen sind. Anforderungen für die Verwendung von Gusseisen mit einer Bruchdehnung ≤ 15 % sind EN 15776 zu entnehmen.

Récipients sous pression non soumis à la flamme - Partie 6: Exigences pour la conception et la fabrication des récipients sous pression et des parties sous pression moulés en fonte à graphite sphéroïdal

Nekurjene tlačne posode - 6. del: Zahteve za konstruiranje in proizvodnjo tlačnih posod in tlačnih delov posode iz nodularne litine

General Information

• Status: Published
• Publication Date: 11-May-2021
• Withdrawal Date: 29-Nov-2021
• ICS: 23.020.30 - Pressure vessels, gas cylinders
• Technical Committee: CEN/TC 54 - Unfired pressure vessels
• Drafting Committee: CEN/TC 54/WG 58 - G - Nodular cast iron vessels
• Current Stage: 6060 - Definitive text made available (DAV) - Publishing
• Start Date: 12-May-2021
• Due Date: 09-Oct-2021
• Completion Date: 12-May-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 13445-6:2021 - Unfired pressure vessels - Part 6: Requirements for the design and fabrication of pressure vessels and pressure parts constructed from spheroidal graphite cast iron

Relations

• Replaces: EN 13445-6:2014/A2:2018 - Unfired pressure vessels - Part 6: Requirements for the design and fabrication of pressure vessels and pressure parts constructed from spheroidal graphite cast iron
• Effective Date: 08-Jun-2022
• Replaces: EN 13445-6:2014/A1:2015 - Unfired pressure vessels - Part 6: Requirements for the design and fabrication of pressure vessels and pressure parts constructed from spheroidal graphite cast iron
• Effective Date: 24-Apr-2019
• Replaces: EN 13445-6:2014 - Unfired pressure vessels - Part 6: Requirements for the design and fabrication of pressure vessels and pressure parts constructed from spheroidal graphite cast iron
• Effective Date: 24-Apr-2019

Standards Content (Sample)

SLOVENSKI STANDARD
01-september-2021
Nadomešča:
SIST EN 13445-6:2014
SIST EN 13445-6:2014/A1:2016
SIST EN 13445-6:2014/A2:2019
Nekurjene tlačne posode - 6. del: Zahteve za konstruiranje in proizvodnjo tlačnih
posod in tlačnih delov posode iz nodularne litine
Unfired pressure vessels - Part 6: Requirements for the design and fabrication of
pressure vessels and pressure parts constructed from spheroidal graphite cast iron
Unbefeuerte Druckbehälter - Teil 6: Anforderungen an die Konstruktion und Herstellung
von Druckbehältern und Druckbehälterteilen aus Gusseisen mit Kugelgraphit
Récipients sous pression non soumis à la flamme - Partie 6: Exigences pour la
conception et la fabrication des récipients sous pression et des parties sous pression
moulés en fonte à graphite sphéroïdal
Ta slovenski standard je istoveten z: EN 13445-6:2021
ICS:
23.020.32 Tlačne posode Pressure vessels
77.140.01 Železni in jekleni izdelki na Iron and steel products in
splošno general
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN 13445-6
EUROPEAN STANDARD
NORME EUROPÉENNE
May 2021
EUROPÄISCHE NORM
ICS 23.020.30 Supersedes EN 13445-6:2014
English Version
Unfired pressure vessels - Part 6: Requirements for the
design and fabrication of pressure vessels and pressure
parts constructed from spheroidal graphite cast iron
Récipients sous pression non soumis à la flamme - Unbefeuerte Druckbehälter - Teil 6: Anforderungen an
Partie 6: Exigences pour la conception et la fabrication die Konstruktion und Herstellung von Druckbehältern
des récipients sous pression et des parties sous und Druckbehälterteilen aus Gusseisen mit
pression moulés en fonte à graphite sphéroïdal Kugelgraphit
This European Standard was approved by CEN on 24 February 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 13445-6:2021 E
worldwide for CEN national Members.

Issue 1 (2021-05)
Contents
Page
European foreword . 5
1 Scope . 6
2 Normative references . 6
3 Terms, definitions units and symbols . 7
3.1 Terms and definitions . 7
3.2 Units . 9
3.3 Symbols . 9
3.4 Inter-relation of thicknesses definitions .11
4 Service conditions .11
4.1 Cyclic loading .11
4.2 Limitations on temperature and energy content .12
5 Requirements .12
5.1 Materials .12
5.2 Design .14
5.2.1 Technical documentation .14
5.2.2 Design methods .14
5.3 Founding .21
5.3.1 General .21
5.3.2 Welding .21
6 Material testing .21
6.1 General .21
6.2 Frequency and number of tests .21
6.3 Chemical analysis .22
6.4 Graphite structure .22
6.5 Inspection documents .22
7 Testing and final assessment .22
7.1 Testing .22
7.1.1 General .22
7.1.2 Testing requirements for C = 0,8 .23
Q
7.1.3 Testing requirements for C = 0,9 .23
Q
7.1.4 Surface imperfections .24
7.1.5 Cracks, laps, cold shut and non-fused chaplets .24
7.1.6 Ultrasonic testing and/or sectioning .24
7.1.7 Magnetic particle testing (only for ferritic grades) .24
7.1.8 Penetrant testing .25
7.1.9 Radiographic testing .25
7.1.10 Surface roughness .25
7.1.11 Minimum wall thickness .25
7.1.12 Wall thickness tolerances .25
7.1.13 Other dimensions .25
7.1.14 Qualification of testing personnel .26
7.2 Final assessment .26
7.2.1 General .26
Issue 1 (2021-05)
7.2.2 Hydraulic test pressure . 26
8 Pressure vessels constructed of a combination of parts in different materials . 26
9 Marking and documentation . 26
9.1 Marking of castings . 26
9.2 Name plate for the complete pressure vessel . 27
9.3 Documentation . 27
(normative) Technical data for the design calculations. 28
A.1 Purpose . 28
A.2 Technical data . 28
A.2.1 Ferritic spheroidal graphite cast iron according to EN 1563:2018 . 28
A.2.2 Austenitic spheroidal graphite cast iron according to EN 13835:2012 . 29
(informative) Ductility . 30
(informative) Determination of the minimum local wall thickness and minimum
required burst test pressure . 32
(normative) Assessment of fatigue life . 34
D.1 Purpose . 34
D.2 Specific definitions . 34
D.3 Specific symbols and abbreviations . 34
D.4 Limitations . 35
D.5 General . 35
D.6 Simplified fatigue assessment . 35
D.6.1 Pseudo-elastic stress range . 35
D.6.2 Correction factors . 36
D.6.3 Fatigue design curves . 37
D.6.4 Allowable number of cycles . 43
∆σ
D.6.5 Allowable stress range . 43
D.7 Detailed fatigue assessment . 43
D.7.1 Pseudo-elastic stress ranges . 43
D.7.2 Corrections to stress range . 44
D.7.3 Fatigue design curves .
...