Gas cylinders - Design, construction and testing of refillable seamless steel gas cylinders and tubes - Part 3: Normalized steel cylinders and tubes (ISO 9809-3:2019)

This document specifies minimum requirements for the material, design, construction and workmanship, manufacturing processes, examination and testing at the time of manufacture for refillable seamless steel gas cylinders and tubes with water capacities up to and including 450 l.
It is applicable to cylinders and tubes for compressed, liquefied and dissolved gases and for normalized or normalized and tempered steel cylinders and tubes.

Gasflaschen - Auslegung, Herstellung und Prüfung von wiederbefüllbaren nahtlosen Gasflaschen aus Stahl - Teil 3: Flaschen aus normalisiertem Stahl (ISO 9809-3:2019)

Dieses Dokument legt Mindestanforderungen an Werkstoff, Auslegung, Bau und Ausführung, Herstellungsverfahren, Herstellungsuntersuchungen und -prüfungen für wiederbefüllbare nahtlose Gasflaschen aus Stahl mit Fassungsräumen bis einschließlich 450 l fest.
Es gilt für Flaschen für verdichtete, verflüssigte und gelöste Gase sowie für Flaschen aus normalisiertem oder normalisiertem und angelassenem Stahl.

Bouteilles à gaz - Conception, construction et essais des bouteilles à gaz et des tubes rechargeables en acier sans soudure - Partie 3: Bouteilles et tubes en acier normalisé (ISO 9809-3:2019)

Le présent document spécifie les exigences minimales concernant le matériau, la conception, la construction et la mise en œuvre, les procédés de fabrication, les examens et les essais au moment de la fabrication des bouteilles à gaz et des tubes rechargeables en acier sans soudure d'une contenance en eau inférieure ou égale à 450 l.
Il s'applique aux bouteilles et tubes pour les gaz comprimés, liquéfiés et dissous, ainsi qu'aux bouteilles et tubes en acier normalisé, ou normalisé et revenu.

Plinske jeklenke - Konstruiranje, izdelava in preskušanje ponovno polnljivih plinskih jeklenk in velikih jeklenk iz celega iz jekla - 3. del: Jeklenke in velike jeklenke iz normaliziranih jekel (ISO 9809-3:2019)

Ta dokument določa minimalne zahteve za material, konstruiranje, izdelavo in izvedbo, postopke izdelave, pregled in preskušanje ob času proizvodnje za ponovno polnljive plinske jeklenke in velike jeklenke iz celega iz jekla s prostornino vode do vključno 450 l. Uporablja se za jeklenke in velike jeklenke za stisnjene, utekočinjene in raztopljene pline ter za jeklenke in velike jeklenke iz normaliziranih jekel oziroma normaliziranih in popuščenih jekel.

General Information

Status
Published
Publication Date
08-Oct-2019
Current Stage
6060 - Definitive text made available (DAV) - Publishing
Due Date
09-Oct-2019
Completion Date
09-Oct-2019

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SLOVENSKI STANDARD
SIST EN ISO 9809-3:2019
01-december-2019
Nadomešča:
SIST EN ISO 9809-3:2010
Plinske jeklenke - Konstruiranje, izdelava in preskušanje ponovno polnljivih

plinskih jeklenk in velikih jeklenk iz celega iz jekla - 3. del: Jeklenke in velike

jeklenke iz normaliziranih jekel (ISO 9809-3:2019)

Gas cylinders - Design, construction and testing of refillable seamless steel gas cylinders

and tubes - Part 3: Normalized steel cylinders and tubes (ISO 9809-3:2019)

Gasflaschen - Gestaltung, Konstruktion und Prüfung von wiederbefüllbaren nahtlosen

Gasflaschen aus Stahl - Teil 3: Flaschen aus normalisiertem Stahl (ISO 9809-3:2019)

Bouteilles à gaz - Conception, construction et essais des bouteilles à gaz et des tubes

rechargeables en acier sans soudure - Partie 3: Bouteilles et tubes en acier normalisé

(ISO 9809-3:2019)
Ta slovenski standard je istoveten z: EN ISO 9809-3:2019
ICS:
23.020.35 Plinske jeklenke Gas cylinders
SIST EN ISO 9809-3:2019 en,fr,de

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

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SIST EN ISO 9809-3:2019
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SIST EN ISO 9809-3:2019
EN ISO 9809-3
EUROPEAN STANDARD
NORME EUROPÉENNE
October 2019
EUROPÄISCHE NORM
ICS 23.020.35 Supersedes EN ISO 9809-3:2010
English Version
Gas cylinders - Design, construction and testing of
refillable seamless steel gas cylinders and tubes - Part 3:
Normalized steel cylinders and tubes (ISO 9809-3:2019)

Bouteilles à gaz - Conception, construction et essais des Gasflaschen - Auslegung, Herstellung und Prüfung von

bouteilles à gaz et des tubes rechargeables en acier wiederbefüllbaren nahtlosen Gasflaschen aus Stahl -

sans soudure - Partie 3: Bouteilles et tubes en acier Teil 3: Flaschen aus normalisiertem Stahl (ISO 9809-

normalisé (ISO 9809-3:2019) 3:2019)
This European Standard was approved by CEN on 25 July 2019.

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

© 2019 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 9809-3:2019 E

worldwide for CEN national Members.
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SIST EN ISO 9809-3:2019
EN ISO 9809-3:2019 (E)
Contents Page

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

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SIST EN ISO 9809-3:2019
EN ISO 9809-3:2019 (E)
European foreword

This document (EN ISO 9809-3:2019) has been prepared by Technical Committee ISO/TC 58 "Gas

cylinders" in collaboration with Technical Committee CEN/TC 23 “Transportable gas cylinders” 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 April 2020, and conflicting national standards shall be

withdrawn at the latest by April 2020.

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 supersedes EN ISO 9809-3:2010.

This document has been prepared under a mandate given to CEN by the European Commission and the

European Free Trade Association.

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, 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 the

United Kingdom.
Endorsement notice

The text of ISO 9809-3:2019 has been approved by CEN as EN ISO 9809-3:2019 without any

modification.
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SIST EN ISO 9809-3:2019
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SIST EN ISO 9809-3:2019
INTERNATIONAL ISO
STANDARD 9809-3
Third edition
2019-08
Gas cylinders — Design, construction
and testing of refillable seamless steel
gas cylinders and tubes —
Part 3:
Normalized steel cylinders and tubes
Bouteilles à gaz — Conception, construction et essais des bouteilles à
gaz et des tubes rechargeables en acier sans soudure —
Partie 3: Bouteilles et tubes en acier normalisé
Reference number
ISO 9809-3:2019(E)
ISO 2019
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SIST EN ISO 9809-3:2019
ISO 9809-3:2019(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2019

All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may

be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting

on the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address

below or ISO’s member body in the country of the requester.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: +41 22 749 01 11
Fax: +41 22 749 09 47
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland
ii © ISO 2019 – All rights reserved
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SIST EN ISO 9809-3:2019
ISO 9809-3:2019(E)
Contents Page

Foreword ..........................................................................................................................................................................................................................................v

Introduction ................................................................................................................................................................................................................................vi

1 Scope ................................................................................................................................................................................................................................. 1

2 Normative references ...................................................................................................................................................................................... 1

3 Terms and definitions ..................................................................................................................................................................................... 1

4 Symbols .......................................................................................................................................................................................................................... 3

5 Inspection and testing .................................................................................................................................................................................... 4

6 Materials ....................................................................................................................................................................................................................... 4

6.1 General requirements ....................................................................................................................................................................... 4

6.2 Controls on chemical composition ........................................................................................................................................ 5

6.3 Heat treatment ........................................................................................................................................................................................ 6

6.4 Failure to meet test requirements .......................................................................................................................................... 6

7 Design .............................................................................................................................................................................................................................. 7

7.1 General requirements ....................................................................................................................................................................... 7

7.2 Design of cylindrical shell thickness .................................................................................................................................... 7

7.3 Design of convex ends (heads and bases)........................................................................................................................ 8

7.4 Design of concave base ends ....................................................................................................................................................10

7.5 Neck design .............................................................................................................................................................................................10

7.6 Foot rings ..................................................................................................................................................................................................11

7.7 Neck rings .................................................................................................................................................................................................11

7.8 Design drawing ....................................................................................................................................................................................11

8 Construction and workmanship ........................................................................................................................................................11

8.1 General ........................................................................................................................................................................................................11

8.2 Wall thickness .......................................................................................................................................................................................11

8.3 Surface imperfections ....................................................................................................................................................................11

8.4 Ultrasonic examination .................................................................................................................................................................12

8.5 Out-of-roundness ...............................................................................................................................................................................12

8.6 Mean diameter .....................................................................................................................................................................................12

8.7 Straightness ............................................................................................................................................................................................12

8.8 Verticality and stability .................................................................................................................................................................12

8.9 Neck threads ..........................................................................................................................................................................................13

9 Type approval procedure .........................................................................................................................................................................13

9.1 General requirements ....................................................................................................................................................................13

9.2 Prototype tests .....................................................................................................................................................................................14

9.2.1 General requirements ...............................................................................................................................................14

9.2.2 Hydraulic burst test ....................................................................................................................................................15

9.2.3 Pressure cycling test ..................................................................................................................................................18

9.2.4 Base check ..........................................................................................................................................................................18

9.2.5 Bend test and flattening test ...............................................................................................................................19

9.2.6 Torque test for taper thread only ...................................................................................................................20

9.2.7 Shear stress calculation for parallel threads ........................................................................................20

9.3 Type approval certificate.............................................................................................................................................................21

10 Batch tests ................................................................................................................................................................................................................21

10.1 General requirements ....................................................................................................................................................................21

10.2 Tensile test ...............................................................................................................................................................................................22

10.3 Impact test ...............................................................................................................................................................................................23

11 Tests/examinations on every cylinder .......................................................................................................................................25

11.1 General ........................................................................................................................................................................................................25

11.2 Hydraulic test ........................................................................................................................................................................................25

11.2.1 Proof pressure test ......................................................................................................................................................25

© ISO 2019 – All rights reserved iii
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SIST EN ISO 9809-3:2019
ISO 9809-3:2019(E)

11.2.2 Volumetric expansion test ....................................................................................................................................25

11.3 Hardness test .........................................................................................................................................................................................26

11.4 Leak test .....................................................................................................................................................................................................26

11.5 Capacity check ......................................................................................................................................................................................26

12 Certification ............................................................................................................................................................................................................26

13 Marking .......................................................................................................................................................................................................................27

Annex A (normative) Description and evaluation of manufacturing imperfections in

seamless gas cylinders ................................................................................................................................................................................28

Annex B (normative) Ultrasonic examination .........................................................................................................................................42

Annex C (informative) Example of type approval certificate ....................................................................................................47

Annex D (informative) Example of acceptance certificate ..........................................................................................................48

Annex E (informative) Bend stress calculation.......................................................................................................................................51

Annex F (informative) An example of shear strength calculation for parallel threads ................................52

Bibliography .............................................................................................................................................................................................................................54

iv © ISO 2019 – All rights reserved
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SIST EN ISO 9809-3:2019
ISO 9809-3:2019(E)
Foreword

ISO (the International Organization for Standardization) is a worldwide federation of national standards

bodies (ISO member bodies). The work of preparing International Standards is normally carried out

through ISO technical committees. Each member body interested in a subject for which a technical

committee has been established has the right to be represented on that committee. International

organizations, governmental and non-governmental, in liaison with ISO, also take part in the work.

ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of

electrotechnical standardization.

The procedures used to develop this document and those intended for its further maintenance are

described in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for the

different types of ISO documents should be noted. This document was drafted in accordance with the

editorial rules of the ISO/IEC Directives, Part 2 (see www .iso .org/directives).

Attention is drawn to the possibility that some of the elements of this document may be the subject of

patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of

any patent rights identified during the development of the document will be in the Introduction and/or

on the ISO list of patent declarations received (see www .iso .org/patents).

Any trade name used in this document is information given for the convenience of users and does not

constitute an endorsement.

For an explanation of the voluntary nature of standards, the meaning of ISO specific terms and

expressions related to conformity assessment, as well as information about ISO's adherence to the

World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT) see www .iso

.org/iso/foreword .html.

This document was prepared by Technical Committee ISO/TC 58, Gas cylinders, Subcommittee SC 3,

Cylinder design.

This third edition cancels and replaces the second edition (ISO 9809-3:2010), which has been technically

revised. The changes compared to the previous edition are as follows:
— water capacity extended from below 0,5 l and up to and including 450 l;
— batch size for tubes now introduced;
— bend test retained only for prototype tests;
— test requirements for check analysis (tolerances modified);
— new test requirements for threads introduced including an informative Annex F;
— original European Annexes now incorporated into the body of this document;
— Annex A "Manufacturing imperfections" now aligned with ISO/TR 16115.

Any feedback or questions on this document should be directed to the user’s national standards body. A

complete listing of these bodies can be found at www .iso .org/members .html.
© ISO 2019 – All rights reserved v
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SIST EN ISO 9809-3:2019
ISO 9809-3:2019(E)
Introduction

This document provides a specification for the design, manufacture, inspection and testing of a

seamless steel cylinder and tube. The objective is to balance design and economic efficiency against

international acceptance and universal utility.

ISO 9809 (all parts) aims to eliminate existing concerns about climate, duplicate inspections and

restrictions because of a lack of definitive International Standards.

This document is intended to be used under a variety of regulatory regimes and has been written so

[7]
that it is suitable to be referenced in the UN Model Regulations .
vi © ISO 2019 – All rights reserved
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SIST EN ISO 9809-3:2019
INTERNATIONAL STANDARD ISO 9809-3:2019(E)
Gas cylinders — Design, construction and testing of
refillable seamless steel gas cylinders and tubes —
Part 3:
Normalized steel cylinders and tubes
1 Scope

This document specifies minimum requirements for the material, design, construction and

workmanship, manufacturing processes, examination and testing at the time of manufacture for

refillable seamless steel gas cylinders and tubes with water capacities up to and including 450 l.

It is applicable to cylinders and tubes for compressed, liquefied and dissolved gases and for normalized

or normalized and tempered steel cylinders and tubes.
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.

ISO 148-1, Metallic materials — Charpy pendulum impact test — Part 1: Test method

ISO 6506-1, Metallic materials — Brinell hardness test — Part 1: Test method
ISO 6508-1, Metallic materials — Rockwell hardness test — Part 1: Test method

ISO 6892-1, Metallic materials — Tensile testing — Part 1: Method of test at room temperature

ISO 9712, Non-destructive testing — Qualification and certification of NDT personnel

ISO 10286, Gas cylinders — Terminology

ISO 9809-1, Gas cylinders — Design, construction and testing of refillable seamless steel gas cylinders and

tubes— Part 1: Quenched and tempered steel cylinders and tubes with tensile strength less than 1 100 MPa

ISO 11114-1, Gas cylinders — Compatibility of cylinder and valve materials with gas contents — Part 1:

Metallic materials

ISO 11114-4, Transportable gas cylinders — Compatibility of cylinder and valve materials with gas

contents — Part 4: Test methods for selecting steels resistant to hydrogen embrittlement

ISO 13341, Gas cylinders — Fitting of valves to gas cylinders
ISO 13769, Gas cylinders — Stamp marking
3 Terms and definitions

For the purposes of this document, the terms and definitions given in ISO 10286 and the following apply.

ISO and IEC maintain terminological databases for use in standardization at the following addresses:

— ISO Online browsing platform: available at https: //www .iso .org/obp
© ISO 2019 – All rights reserved 1
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SIST EN ISO 9809-3:2019
ISO 9809-3:2019(E)
— IEC Electropedia: available at http: //www .electropedia .org/
3.1
batch

quantity of up to 200 for cylinders and up to 50 for tubes, plus cylinders/tubes for destructive testing

of the same nominal diameter, thickness, length and design made successively on the same equipment,

from the same cast of steel and subjected to the same heat treatment for the same duration of time

Note 1 to entry: In this document where not specifically mentioned for “cylinder/tube” only the term “cylinder”

will be used.
3.2
burst pressure
highest pressure reached in a cylinder during a burst test
3.3
design stress factor

ratio of equivalent wall stress at test pressure, p , to guaranteed minimum yield strength, R

h eg
3.4
normalizing

heat treatment in which a cylinder is heated to a uniform temperature above the upper critical point,

Ac , of the steel and then cooled in still air
3.5
reject

cylinder that has been set aside (Level 2 or Level 3) and not allowed to enter into service

3.6
rendered unserviceable

cylinder that has been treated in such a way as to render it impossible for it to enter into service

Note 1 to entry: Examples for acceptable methods to render cylinders unserviceable can be found in ISO 18119.

Any actions on cylinders rendered unserviceable are outside the scope of this document.

3.7
repair
action to return a rejected cylinder to a Level 1 condition
3.8
tempering

toughening heat treatment which follows normalizing, in which the cylinder is heated to a uniform

temperature below the lower critical point, Ac , of the steel
3.9
test pressure
required pressure applied during a pressure test
Note 1 to entry: Test pressure is used for cylinder wall thickness calculation.
3.10
working pressure

settled pressure of a compressed gas at a uniform reference temperature of 15 °C in a full gas cylinder

2 © ISO 2019 – All rights reserved
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SIST EN ISO 9809-3:2019
ISO 9809-3:2019(E)
3.11
yield strength

stress value corresponding to the lower yield strength, R or for steels which do not exhibit a defined

yield, the 0,2 % proof strength (non-proportional extension), R
p0,2
Note 1 to entry: See ISO 6892-1.
4 Symbols
A percentage elongation after fracture
a calculated minimum thickness, in millimetres, of the cylindrical shell
a′ guaranteed minimum thickness, in millimetres, of the cylindrical shell

a guaranteed minimum thickness, in millimetres, of a concave base at the knuckle (see Figure 2)

a guaranteed minimum thickness, in millimetres, at the centre of a concave base (see Figure 2)

b guaranteed minimum thickness, in millimetres, at the centre of a convex base (see Figure 1)

c maximum permissible deviation of burst profile, in millimetres (see Figure 5)

D nominal design outside diameter of the cylinder, in millimetres, (see Figure 1 and Figure 2)

D diameter, in millimetres, of former (see Figure 6)
F design stress factor (variable), see 7.2

H outside height, in millimetres, of domed part (convex head or base end), (see Figure 1)

h outside depth (concave base end), in millimetres (see Figure 2)
l1 length of cylindrical part of the cylinder, in millimetres (see Figure 3)
L original gauge length, in millimetres, as defined in ISO 6892-1 (see Figure 8)

n ratio of the diameter of the bend test former to actual thickness of test piece, t

p measured burst pressure, in bars above atmospheric pressure
NOTE 1 bar = 10 Pa = 0,1 MPa.
p hydraulic test pressure, in bars, above atmospheric pressure

p observed pressure when cylinder starts yielding during hydraulic bursting test, in bars

r inside knuckle radius, in millimetres (see Figures 1 and 2)

R minimum guaranteed value of the yield strength (see 7.1.1), in megapascals, for the finished

cylinder

R actual value of the yield strength, in megapascals, as determined by the tensile test (see 10.2)

R minimum guaranteed value of the tensile strength, in megapascals, for the finished cylinder

R actual value of the tensile strength, in megapascals, as determined by the tensile test

(see 10.2)
© ISO 2019 – All rights reserved 3
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