SIST EN 13445-8:2021
(Main)Unfired pressure vessels - Part 8: Additional requirements for pressure vessels of aluminium and aluminium alloys
Unfired pressure vessels - Part 8: Additional requirements for pressure vessels of aluminium and aluminium alloys
This document specifies requirements for unfired pressure vessels and their parts made of aluminium and aluminium alloys in addition to the general requirements for unfired pressure vessels under EN 13445:2019 Parts 1 to 5. This document specifies unfired pressure vessels for loads up to 500 full cycles.
NOTE Cast materials are not included in this version. Details regarding cast materials will be subject to an amendment to or a revision of this document.
Unbefeuerte Druckbehälter - Teil 8: Zusätzliche Anforderungen an Druckbehälter aus Aluminium und Aluminiumlegierungen
Dieses Dokument legt zusätzlich zu den allgemeinen Anforderungen an unbefeuerte Druckbehälter nach EN 13445:2021, Teile 1 bis 5, Anforderungen an aus Aluminium und Aluminiumlegierungen hergestellte unbefeuerte Druckbehälter und deren Bauteile fest. Dieser Teil der Europäischen Norm gilt für unbefeuerte Druckbehälter für Druckbelastungen bis zu 500 vollen Lastzyklen.
ANMERKUNG Gusswerkstoffe sind in der vorliegenden Fassung nicht enthalten. Angaben zu Gusswerkstoffen werden in einer Ergänzung bzw. Überarbeitung dieser Norm aufgenommen.
Récipients sous pression non soumis à la flamme - Partie 8: Exigences complémentaires pour les récipients sous pression en aluminium et alliages d'aluminium
Nekurjene tlačne posode - 8. del: Dodatne zahteve za tlačne posode iz aluminija in aluminijevih zlitin
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
SIST EN 13445-8:2021
01-september-2021
Nadomešča:
SIST EN 13445-8:2014
SIST EN 13445-8:2014/A1:2015
Nekurjene tlačne posode - 8. del: Dodatne zahteve za tlačne posode iz aluminija in
aluminijevih zlitin
Unfired pressure vessels - Part 8: Additional requirements for pressure vessels of
aluminium and aluminium alloys
Unbefeuerte Druckbehälter - Teil 8: Zusätzliche Anforderungen an Druckbehälter aus
Aluminium und Aluminiumlegierungen
Récipients sous pression non soumis à la flamme - Partie 8: Exigences complémentaires
pour les récipients sous pression en aluminium et alliages d'aluminium
Ta slovenski standard je istoveten z: EN 13445-8:2021
ICS:
23.020.32 Tlačne posode Pressure vessels
77.150.10 Aluminijski izdelki Aluminium products
SIST EN 13445-8:2021 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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SIST EN 13445-8:2021
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SIST EN 13445-8:2021
EN 13445-8
EUROPEAN STANDARD
NORME EUROPÉENNE
May 2021
EUROPÄISCHE NORM
ICS 23.020.30 Supersedes EN 13445-8:2014
English Version
Unfired pressure vessels - Part 8: Additional requirements
for pressure vessels of aluminium and aluminium alloys
Récipients sous pression non soumis à la flamme - Unbefeuerte Druckbehälter - Teil 8: Zusätzliche
Partie 8: Exigences complémentaires pour les Anforderungen an Druckbehälter aus Aluminium und
récipients sous pression en aluminium et alliages Aluminiumlegierungen
d'aluminium
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 13445-8:2021 E
worldwide for CEN national Members.
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SIST EN 13445-8:2021
EN 13445-8:2021 (E)
Issue 1 (2021-05)
Contents
Page
European foreword . 4
1 Scope . 5
2 Normative references . 5
3 Terms, definitions, symbols and units . 7
4 General . 7
5 Materials . 7
5.1 General . 7
5.2 Elongation after fracture . 7
5.3 Prevention of brittle fracture . 7
5.4 Lamellar tearing . 8
5.5 Chemical composition . 8
5.6 Material grouping system . 8
6 Design . 9
6.1 General . 9
6.2 Design temperature and properties. 9
6.3 Time-independent nominal design stress . 9
6.4 Thick walled, small bore piping for shells .10
6.5 Fatigue design .10
6.6 Lapped joints, joggle joints, permanent backing strips .10
6.6.1 General .10
6.6.2 Lapped joints .10
6.6.3 Joggle joints .11
6.6.4 Joints with permanent backing strips .11
6.7 Flat ends .11
6.8 Design by experiment .12
6.9 Port-hole-extruded tubes .12
7 Manufacture .12
7.1 General .12
7.2 Materials .12
7.3 Tolerances .12
7.4 Welding procedure specification (WPS) .13
7.5 Qualification of welding procedure specifications (WPQR) .13
7.6 Qualification of welders and welding operators .13
7.7 Joint preparation .13
7.8 Preheat .14
7.9 Production test, reference criteria .14
7.10 Extent of testing .15
7.11 Performance of test and acceptance criteria .15
7.12 Forming procedures .15
7.13 Heat treatment after forming .16
7.14 Sampling of formed products .17
2
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SIST EN 13445-8:2021
EN 13445-8:2021 (E)
Issue 1 (2021-05)
7.15 Tests . 18
7.15.1 Base material . 18
7.15.2 Butt welds . 18
7.16 Post weld heat treatment (PWHT) . 18
8 Inspection and testing . 18
8.1 General . 18
8.2 Non-destructive testing of welded joints . 19
8.2.1 General . 19
8.2.2 Demonstration of satisfactory experience for testing group 2 . 20
8.2.3 Symbols . 20
8.3 Determination of extent of non destructive testing . 20
8.4 Applicable non-destructive testing techniques . 23
8.4.1 NDT methods . 23
8.4.2 Acceptance criteria for radiographic testing (RT) . 24
8.4.3 Acceptance criteria for visual and surface penetrant testing . 24
8.4.4 Acceptance criteria for penetrant testing (PT) . 25
8.5 Selection of non-destructive testing methods for internal imperfections. 25
8.6 Standard hydrostatic test . 26
8.7 Pneumatic testing . 26
9 Inspection and testing of serially produced pressure vessels — Model approval . 26
9.1 General . 26
9.2 Inspection and testing of pressure vessels subject to cyclic loads . 26
Annex A (normative) Allowable design strength values . 27
A.1 General . 27
A.2 Extruded rod/bar, tube and profile . 27
A.3 Cold drawn rod/bar and tube . 29
A.4 Forgings . 30
Annex Y (informative) History of EN 13445-8 . 34
Y.1 Differences between EN 13445-8:2014 and EN 13445-8:2021 . 34
Annex ZA (informative) Relationship between this European Standard and the essential
requirements of Directive 2014/68/EU aimed to be covered . 35
Bibliography . 37
3
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SIST EN 13445-8:2021
EN 13445-8:2021 (E)
Issue 1 (2021-05)
European foreword
This document (EN 13445-8:2021) has been prepared by Technical Committee CEN/TC 54 “Unfired pressure
vessels”, the secretariat of which is held by BSI.
This European Standard shall be given the status of a national standard, either by publication of an identical
text or by endorsement, at the latest by November 2021, and conflicting national standards shall be withdrawn
at the latest by November 2021.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. CEN shall not be held responsible for identifying any or all such patent rights.
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(s).
For relationship with EU Directive(s), see informative Annex ZA, which is an integral part of this document.
list of all parts in the EN 13445 series can be found on the CEN website.
Although these Parts may be obtained separately, it should be recognised that the Parts are inter-dependant.
As such the manufacture of unfired pressure vessels requires the application of all the relevant Parts in order
for the requirements of the Standard to be satisfactorily fulfilled.
Corrections to the standard interpretations where several options seem possible are conducted through the
Migration Help Desk (MHD). Information related to the Help Desk can be found at http://www.unm.fr
(en13445@unm.fr). A form for submitting questions can be downloaded from the link to the MHD website.
After subject experts have agreed an answer, the answer will be communicated to the questioner. Corrected
pages will be given specific issue number and issued by CEN according to CEN Rules. Interpretation sheets
will be posted on the website of the MHD.
This document supersedes EN 13445-8:2014. This new edition incorporates the Amendments which have
been approved previously by CEN members, and the corrected pages up to Issue 5 without any further
technical change. Annex Y provides details of significant technical changes between this European Standard
and the previous edition.
Amendments to this new edition may be issued from time to time and then used immediately as alternatives
to rules contained herein. It is intended to deliver a new Issue of EN 13445:2021 each year, starting with the
precedent as Issue 1, consolidating these Amendments and including other identified corrections.
According to the CEN-CENELEC Internal Regulations, the national standards organizations of the following
countries are bound to implement this European Standard: 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, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom.
4
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SIST EN 13445-8:2021
EN 13445-8:2021 (E)
Issue 1 (2021-05)
1 Scope
This document specifies requirements for unfired pressure vessels and their parts made of aluminium and
aluminium alloys in addition to the general requirements for unfired pressure vessels under EN 13445:2021
Parts 1 to 5. This document specifies unfired pressure vessels for loads up to 500 full cycles.
NOTE Cast materials are not included in this version. Details regarding cast materials will be subject to an
amendment to or a revision of this document.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content constitutes
requirements of this document. For dated references, only the edition cited applies. For undated references,
the latest edition of the referenced document (including any amendments) applies.
EN 485-2:2013, Aluminium and aluminium alloys — Sheet, strip and plate — Part 2: Mechanical properties
EN 573-3:2013, Aluminium and aluminium alloys — Chemical composition and form of wrought products —
Part 3: Chemical composition and form of products
EN 586-2:1994, Aluminium and aluminium alloys — Forgings — Part 2: Mechanical properties and additional
property requirements
EN 754-2:2013, Aluminium and aluminium alloys — Cold drawn rod/bar and tube — Part 2: Mechanical
properties
EN 755-1:2016, Aluminium and aluminium alloys — Extruded rod/bar, tube and profiles — Part 1: Technical
conditions for inspection and delivery
EN 755-2:2016, Aluminium and aluminium alloys — Extruded rod/bar, tube and profiles — Part 2: Mechanical
properties
EN 755-8:2016, Aluminium and aluminium alloys — Extruded rod/bar, tube and profiles — Part 8: Porthole
tubes, tolerances on dimensions and form
EN 764-5:2014, Pressure Equipment — Part 5: Inspection documentation of metallic materials and compliance
with the material specification
EN 10204:2004, Metallic products — Types of inspection documents
EN 12392:2000, Aluminium and aluminium alloys — Wrought products — Special requirements for products
intended for the production of pressure equipment
EN 13445-1:2021, Unfired pressure vessels — Part 1: General
EN 13445-2:2021, Unfired pressure vessels — Part 2: Materials
EN 13445-3:2021, Unfired pressure vessels — Part 3: Design
EN 13445-4:2021, Unfired pressure vessels — Part 4: Fabrication
EN 13445-5:2021, Unfired pressure vessels — Part 5: Inspection and testing
5
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SIST EN 13445-8:2021
EN 13445-8:2021 (E)
Issue 1 (2021-05)
EN ISO 3452-1:2013, Non-destructive testing — Penetrant testing — Part 1: General principles (ISO 3452-
1:2013)
EN ISO 3834-2:2005, Quality requirements for fusion welding of metallic materials — Part 2: Comprehensive
quality requirements (ISO 3834-2:2005)
EN ISO 3834-3:2005, Quality requirements for fusion welding of metallic materials — Part 3: Standard quality
requirements (ISO 3834-3:2005)
EN ISO 4063:2010, Welding and allied processes — Nomenclature of processes and reference numbers (ISO
4063:2009, Corrected version 2010-03-01)
EN ISO 6520-1:2007, Welding and allied processes — Classification of geometric imperfections in metallic
materials — Part 1: Fusion welding (ISO 6520-1:2007)
EN ISO 9606-2:2004, Qualification test of welders — Fusion welding — Part 2: Aluminium and aluminium alloys
(ISO 9606-2:2004)
EN ISO 10042:2005, Welding — Arc-welded joints in aluminium and its alloys — Quality levels for imperfections
(ISO 10042:2005)
EN ISO 11666:2010, Non-destructive testing of welds — Ultrasonic testing — Acceptance levels (ISO
11666:2010)
EN ISO 14732:2013, Welding personnel — Qualification testing of welding operators and weld setters for
mechanized and automatic welding of metallic materials (ISO 14732:2013)
EN ISO 15614-2:2005, Specification and qualification of welding procedures for metallic materials — Welding
procedure test — Part 2: Arc welding of aluminium and its alloys (ISO 15614-2:2005)
EN ISO 16826:2014, Non-destructive testing — Ultrasonic testing — Examination for discontinuities
perpendicular to the surface (ISO 16826:2012)
EN ISO 17635:2016, Non-destructive testing of welds — General rules for metallic materials (ISO 17635:2016)
EN ISO 17636-1:2013, Non-destructive testing of welds — Radiographic testing — Part 1: X- and gamma-ray
techniques with film (ISO 17636-1:2013)
EN ISO 17636-2:2013, Non-destructive testing of welds — Radiographic testing — Part 2: X- and gamma-ray
techniques with digital detectors (ISO 17636-2:2013)
EN ISO 17637:2011, Non-destructive testing of welds — Visual testing of fusion-welded joints (ISO 17637:2003)
EN ISO 17640:2010, Non-destructive testing of welds — Ultrasonic testing — Techniques, testing levels, and
assessment (ISO 17640:2010)
EN ISO 23277:2009, Non-destructive testing of welds — Penetrant testing of welds — Acceptance levels
(ISO 23277:2006)
CR ISO/TR 15608:2013, Welding — Guidelines for a metallic materials grouping system (ISO/TR 15608:2013)
ISO 857-1:1998, Welding and allied processes — Vocabulary — Part 1: Metal welding processes
6
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SIST EN 13445-8:2021
EN 13445-8:2021 (E)
Issue 1 (2021-05)
3 Terms, definitions, symbols and units
For the purposes of this document, the terms, definitions, symbols and units given in EN 13445:2021 Parts 1
to 5 apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— IEC Electropedia: available at http://www.electropedia.org/
— ISO Online browsing platform: available at http://www.iso.org/obp
NOTE Further symbols are listed in 8.2.3.
4 General
EN 13445-1:2021 applies.
5 Materials
5.1 General
Materials for pressure-bearing parts compliant with the requirements of this document shall be accompanied
by inspection documents in accordance with EN 10204:2004.
The type of inspection document shall be in accordance with EN 764-5:2014 and include a declaration of
compliance to the material specification.
The requirements of EN 13445-2:2021 shall apply with the following additions/exclusions.
5.2 Elongation after fracture
NOTE Also see 4.1.4 of EN 13445-2:2021.
Aluminium and aluminium alloys used for welded parts of pressure vessels that are subjected to cold forming
(e.g. rolled shells and heads) shall have a specified minimum elongation after fracture measured on a gauge
length
L = 5,65 S (5.2-1)
o o
that is ≥ 14 % in the longitudinal or transverse direction as defined by the material specification.
Aluminium and aluminium alloys used for parts of pressure vessels that are not subject to cold forming (e.g.
straight flanges and nozzles) shall have a specified minimum elongation after fracture of ≥ 10 % in the
longitudinal or transverse direction as defined by the material specification, measured on a gauge length as
defined in Formula (5.2-1).
5.3 Prevention of brittle fracture
EN 13445-2:2021, Annex B, is not applicable. All materials of Table 5.6-1 are suitable for any minimum metal
temperature without impact testing.
NOTE See also EN 1252-1 and EN 12392:2000, 8.4.
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SIST EN 13445-8:2021
EN 13445-8:2021 (E)
Issue 1 (2021-05)
5.4 Lamellar tearing
NOTE Also see EN 13445-2:2021, 4.2.1.2.
Specific requirements of lamellar tearing for pressure vessels of aluminium and its alloys are not applicable.
5.5 Chemical composition
The chemical composition shall be in accordance with the material specification.
It is recommended that the material to be used for welded components be produced from rolling or extrusion
ingots with hydrogen level no greater than 0,2 ml per 100 g aluminium, measured on liquid metal during
casting (see EN 12392:2000, 5.1.3).
EN 12392:2000, 4.1, recommends a maximum lead content not exceeding 150 μg/g.
5.6 Material grouping system
Annex A of EN 13445-2:2021 is not applicable for pressure vessels of aluminium and its alloys. The allowable
materials for the construction of aluminium alloy pressure vessels shall be according to Table 5.6-1 below.
Any product form available in EN 12392:2000 for a material in Table 5.6-1 at an acceptable temper is
acceptable for construction to this document, as long as the requirements of 5.2 and 5.5 are fulfilled. Other
materials not defined here may be used by agreement by the parties concerned (see EN 13445-2:2021, 4.1.4)
if they meet the requirements of 5.2 and 5.5 and a particular material appraisal is produced (see
EN 764-4:2002).
Table 5.6-1 — Grouping system based on CR ISO/TR 15608:2013 and allowable materials of
construction based on EN 12392:2000 using the EN AW numbers according to EN 573-3:2013
Designation
Sub Type of aluminium and
Group
group aluminium alloys
EN AW number Chemical symbol Temper
21 Pure aluminium with ≤ 1 % EN AW — 1050A EN AW-Al 99,5 O, H111, H112
impurities or alloy content EN AW — 1070A EN AW-Al 99,7 O, H111, H112
EN AW — 1080A EN AW-Al 99,8(A) O, H111, H112
22 Non heat treatable alloys
22.1 Aluminium-manganese alloys EN AW — 3003 EN AW-Al Mn1Cu O, H111, H112
EN AW — 3103 EN AW-Al Mn1 O, H111, H112
EN AW — 3105 EN AW-Al Mn0,5Mg0,5 O, H111
22.2 Aluminium-magnesium alloys EN AW — 5005 EN AW-Al Mg1(B) O, H111, H112
with Mg ≤ 1,5 % EN AW — 5005A EN AW-Al Mg1(C) O, H111, H112
EN AW — 5050 EN AW-Al Mg1,5(C) O, H111
22.3 Aluminium-magnesium alloys EN AW — 5049 EN AW-Al Mg2Mn0,8 O, H111, H112
with 1,5 % < Mg ≤ 3,5 % EN AW — 5052 EN AW-Al Mg2,5 O, H111, H112
EN AW — 5154A EN AW-Al Mg3,5(A) O, H111, H112
EN AW — 5251 EN AW-Al Mg2 O, H111, H112
EN AW — 5454 EN AW-Al Mg3Mn(A) O, H111, H112
EN AW — 5754 EN AW-Al Mg3 O, H111, H112
22.4 Aluminium-magnesium alloys EN AW — 5083 EN AW-Al Mg4,5Mn0,7 O, H111, H112
with Mg > 3,5 %
EN AW — 5086 EN AW-Al Mg4 O, H111
23 Heat treatable alloys
a
23.1 Aluminium-magnesium-silicon EN AW — 6060 EN AW-Al MgSi
T4
alloys EN AW — 6061 EN AW-Al Mg1SiCu
b c
T4 , T6
a
for profiles only
b
for seamless pipes and flanges only
c
for flanges only
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SIST EN 13445-8:2021
EN 13445-8:2021 (E)
Issue 1 (2021-05)
6 Design
6.1 General
The requirements of EN 13445-3:2021 shall apply with the following additions/exclusions.
6.2 Design temperature and properties
NOTE 1 Also see EN 13445-2:2021, 4.2.2.
nd
EN 13445-2:2021, 4.2.2.1, 2 paragraph, is not applicable for aluminium and its alloys.
Design strength values are given in Tables A.2 to A.5 in Annex A. Design temperatures that exceed the
respective temperature limit in Annex A are not permitted.
For materials of group 22.4 temperatures above 80 °C may result in grain boundary precipitation of Al -Mg .
3 2
These materials may be used at temperatures above 80 °C up to 200 °C only for non-corrosive service.
NOTE 2 For further material properties see EN 12392:2000.
For welded parts and heat-treated parts after forming only the values equivalent to the O temper shall be used
for design when 6 000 series flanges, etc. are welded. These values are not quoted in EN 12392:2000 and so
the tabulated values for f shown in Table 6.3-2 shall be used for design. The weld area shall be based on the O
temper but the flange strength away from the weld (2t) may be based on the actual temper (T4 or T6).
For aluminium and aluminium alloys values of 0,2 % proof stress (or 1 % proof stress for material
group 21-1 000 series aluminium) for temperatures above 20 °C shall be established by linear interpolation
between two adjacent values in Annex A or in EN 12392:2000 except that for alloys 5083 and 5086 the
respective value at 50 °C may be used for 65 °C.
For material of group 22.4: For short periods, higher temperatures (e.g. when defrosting refrigerating plant)
up to 150 °C are permissible provided that the pressure is reduced to half the working pressure for a period
up to 8 h and to atmospheric pressure for a period up to 24 h.
6.3 Time-independent nominal design stress
The design stress for aluminium and aluminium alloy materials shall be in accordance with the Table 6.3-1.
Table 6.3-1 — Design Stresses
...
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