prEN 13110

SLOVENSKI STANDARD
oSIST prEN 13110:2021
01-junij-2021
Oprema in pribor za utekočinjeni naftni plin (UNP) - Premične ponovno polnljive
varjene jeklenke iz aluminija za UNP - Konstruiranje in izdelava

LPG equipment and accessories - Transportable refillable welded aluminium cylinders

Flüssiggas-Geräte und Ausrüstungsteile - Ortsbewegliche wiederbefüllbare geschweißte

Equipements pour gaz de pétrole liquéfiés et leurs accessoires - Bouteilles soudées

transportables et rechargeables en aluminium pour gaz de pétrole liquéfié (GPL) -

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

Equipements pour gaz de pétrole liquéfiés et leurs Flüssiggas-Geräte und Ausrüstungsteile -

accessoires - Bouteilles soudées transportables et Ortsbewegliche wiederbefüllbare geschweißte

rechargeables en aluminium pour gaz de pétrole Flaschen aus Aluminium für Flüssiggas (LPG) -

This draft European Standard is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee

If this draft becomes a European Standard, 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.

This draft European Standard 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

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

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

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

© 2021 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 13110:2021 E

European foreword ....................................................................................................................................................... 5

Introduction .................................................................................................................................................................... 6

1 Scope .................................................................................................................................................................... 7

2 Normative references .................................................................................................................................... 7

3 Terms, definitions and symbols ................................................................................................................. 8

3.1 Terms and definitions ................................................................................................................................... 8

3.2 Symbols ............................................................................................................................................................... 9

4 Materials ............................................................................................................................................................. 9

5 Design ............................................................................................................................................................... 11

5.1 General requirements ................................................................................................................................ 11

5.2 Calculation of cylindrical wall thickness ............................................................................................. 11

5.3 Design of ends concave to pressure....................................................................................................... 11

5.4 Other shapes of ends ................................................................................................................................... 12

5.5 Minimum wall thickness ............................................................................................................................ 12

5.6 Design of openings ....................................................................................................................................... 13

5.7 Neck design..................................................................................................................................................... 13

5.8 Stability ............................................................................................................................................................ 17

5.9 Valve protection ........................................................................................................................................... 17

6 Construction and workmanship ............................................................................................................. 17

6.1 Environment .................................................................................................................................................. 17

6.2 Welding qualification ................................................................................................................................. 17

6.3 Plates and pressed parts ........................................................................................................................... 17

6.4 Welded joints ................................................................................................................................................. 18

6.5 Tolerances ...................................................................................................................................................... 18

6.6 Non-pressure bearing attachments ....................................................................................................... 18

6.7 Heat treatment .............................................................................................................................................. 19

6.8 Closure of openings ..................................................................................................................................... 19

7 Testing and examination ........................................................................................................................... 20

7.1 General ............................................................................................................................................................. 20

7.2 Types of test and evaluation of test results ........................................................................................ 20

7.3 Test specimens and related tests and examinations ...................................................................... 21

7.3.1 Two piece cylinders ..................................................................................................................................... 21

7.3.2 Three piece cylinders ................................................................................................................................. 21

7.3.3 Valve boss welds ........................................................................................................................................... 21

7.4 Tensile test ..................................................................................................................................................... 23

7.4.1 General ............................................................................................................................................................. 23

7.4.2 Parent material ............................................................................................................................................. 23

7.4.3 Welds ................................................................................................................................................................ 23

7.5 Bend test .......................................................................................................................................................... 23

7.5.1 Bend test on parent material ................................................................................................................... 23

7.5.2 Bend test across the welds ........................................................................................................................ 24

7.5.3 Nick-break test across the welds ............................................................................................................ 24

7.6 Macroscopic examination of welds ........................................................................................................ 26

7.6.1 Procedure ........................................................................................................................................................ 26

7.6.2 Requirements ................................................................................................................................................. 26

7.7 Burst test under hydraulic pressure ..................................................................................................... 27

7.7.1 Procedure ........................................................................................................................................................ 27

7.7.2 Requirements ................................................................................................................................................. 28

7.8 Fatigue test ...................................................................................................................................................... 28

7.8.1 Procedure ........................................................................................................................................................ 28

7.8.2 Requirements ................................................................................................................................................. 29

7.9 Drop test .......................................................................................................................................................... 29

7.9.1 Procedure ........................................................................................................................................................ 29

7.9.2 Requirements ................................................................................................................................................. 29

7.10 Visual examination ...................................................................................................................................... 29

7.10.1 Procedure ........................................................................................................................................................ 29

7.10.2 Requirements ................................................................................................................................................. 30

7.11 Radiographic examination ........................................................................................................................ 30

7.11.1 Procedure ........................................................................................................................................................ 30

7.11.2 Assessment...................................................................................................................................................... 30

7.11.3 Requirements ................................................................................................................................................. 30

7.12 Pressure test ................................................................................................................................................... 30

7.12.1 Procedure ........................................................................................................................................................ 30

7.12.2 Requirements ................................................................................................................................................. 30

8 Technical requirements for type approval ......................................................................................... 32

8.1 New cylinder design ..................................................................................................................................... 32

8.2 Extent of testing ............................................................................................................................................. 32

8.3 Type approval certificate ........................................................................................................................... 33

9 Production testing and examination requirements ........................................................................ 33

9.1 Tests and examinations applicable to all cylinders ......................................................................... 33

9.2 Radiographic examination ........................................................................................................................ 34

9.3 Macro examination ...................................................................................................................................... 34

9.4 Examination of valve boss weld .............................................................................................................. 34

9.5 Examination of non-pressure containing attachment welds ........................................................ 34

9.6 Unacceptable imperfections found by radiographic or macro examinations ........................ 34

9.7 Production batch testing (mechanical/burst tests) ......................................................................... 35

9.7.1 Production batch .......................................................................................................................................... 35

9.7.2 Inspection lots................................................................................................................................................ 36

9.7.3 Rate of sampling ............................................................................................................................................ 36

9.7.4 Additional checks ......................................................................................................................................... 37

9.8 Failure to meet mechanical and burst test requirements ............................................................. 37

9.8.1 Mechanical ...................................................................................................................................................... 37

9.8.2 Burst .................................................................................................................................................................. 37

9.8.3 Production batch retest .............................................................................................................................. 37

9.8.4 Resubmission of a production batch ..................................................................................................... 37

9.8.5 Weld repairs ................................................................................................................................................... 38

10 Marking ............................................................................................................................................................ 38

Annex A (normative) Corrosion tests ................................................................................................................... 39

A.1 Test for assessing susceptibility to intercrystalline corrosion .................................................... 39

A.1.1 Specimens ........................................................................................................................................................ 39

A.1.2 Pre-treatment of the specimen before corrosive etching .............................................................. 39

A.1.3 Corrosive etching process ......................................................................................................................... 40

A.1.4 Preparation of specimens for examination ........................................................................................ 41

A.1.5 Micrographic examination of specimens............................................................................................. 41

A.1.6 Interpretation of the micrographic examination ............................................................................. 41

A.2 Tests for assessing susceptibility to stress corrosion ..................................................................... 41

A.2.1 Specimens ....................................................................................................................................................... 41

A.2.2 Surface preparation before test .............................................................................................................. 41

A.2.3 Method ............................................................................................................................................................. 42

A.2.4 Interpretation of the results .................................................................................................................... 46

A.2.5 Metallographical examination (additional examination) ............................................................. 46

A.3 Conclusion of corrosion tests ................................................................................................................... 46

A.4 Test report ...................................................................................................................................................... 46

Bibliography ................................................................................................................................................................. 47

This document (prEN 13110:2021) has been prepared by Technical Committee CEN/TC 286 “Liquefied

petroleum gas equipment and accessories”, the secretariat of which is held by NSAI.

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

NOTE These regulations take precedence over any clause of this document. It is emphasized that RID/ADR are

being revised regularly at intervals of two years which might lead to temporary non-compliances with the clauses

This document calls for the use of substances and procedures that may be injurious to health and/or the

environment if adequate precautions are not taken. It refers only to technical suitability: it does not

Protection of the environment is a key political issue in Europe and elsewhere. For CEN/TC 286 this is

covered in CEN/TS 16765 and this Technical Specification should be read in conjunction with this

document. The Technical Specification provides guidance on the environmental aspects to be considered

regarding equipment and accessories produced for the LPG industry and the following is addressed:

Users are advised to develop an environmental management policy. For guidance see ISO 14000 series.

Provisions need to be restricted to a general guidance. Limit values are specified in national laws.

It has been assumed in the drafting of this document that the execution of its provisions is entrusted to

NOTE This document requires measurement of material properties, dimensions and pressures. All such

measurements are subject to a degree of uncertainty due to tolerances in measuring equipment, etc. It might be

beneficial to refer to the leaflet “measurement uncertainty leaflet” SP INFO 2000 27 [11].

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

testing and examination during the manufacture of transportable refillable welded aluminium liquefied

petroleum gas (LPG) cylinders, having a water capacity from 0,5 l up to and including 150 l, exposed to

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 12816, LPG equipment and accessories - Transportable refillable LPG cylinders - Disposal

EN 14784-1, Non-destructive testing - Industrial computed radiography with storage phosphor imaging

EN ISO 4136, Destructive tests on welds in metallic materials - Transverse tensile test (ISO 4136)

EN ISO 5173, Destructive tests on welds in metallic materials - Bend tests (ISO 5173)

EN ISO 5178, Destructive tests on welds in metallic materials - Longitudinal tensile test on weld metal in

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

EN ISO 9606-2, Qualification test of welders - Fusion welding - Part 2: Aluminium and aluminium alloys

EN ISO 9712:2012, Non-destructive testing - Qualification and certification of NDT personnel

EN ISO 10042:2018, Welding - Arc-welded joints in aluminium and its alloys - Quality levels for

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

EN ISO 11117:2019, Gas cylinders - Valve protection caps and guards - Design, construction and tests

EN ISO 14731:2019, Welding coordination - Tasks and responsibilities (ISO 14731:2019)

EN ISO 14732, Welding personnel - Qualification testing of welding operators and weld setters for

EN ISO 15607, Specification and qualification of welding procedures for metallic materials - General rules

EN ISO 15609-1, Specification and qualification of welding procedures for metallic materials - Welding

EN ISO 15614-2, Specification and qualification of welding procedures for metallic materials - Welding

EN ISO 16371-2, Non-destructive testing - Industrial computed radiography with storage phosphor imaging

plates - Part 2: General principles for testing of metallic materials using X-rays and gamma rays (ISO 16371-

EN ISO 17636-1:2013, Non-destructive testing of welds - Radiographic testing - Part 1: X- and gamma-ray

EN ISO 17636-2:2013, Non-destructive testing of welds - Radiographic testing - Part 2: X- and gamma-ray

EN ISO 17637, Non-destructive testing of welds - Visual testing of fusion-welded joints (ISO 17637)

EN ISO 17639, Destructive tests on welds in metallic materials - Macroscopic and microscopic examination

EN ISO 19232-1, Non-destructive testing - Image quality of radiographs - Part 1: Determination of the

EN ISO 19232-2, Non-destructive testing - Image quality of radiographs - Part 2: Determination of the

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

low pressure liquefied gas composed of one or more light hydrocarbons which are assigned to UN 1011,

UN 1075, UN 1965, UN 1969 or UN 1978 only and which consists mainly of propane, propene, butane,

0,2 % proof strength R (non-proportional elongation) for aluminium alloys, and the 1 % proof strength

solution heat treatment, quenching and artificial or natural ageing that ensures the strength values

A Actual elongation after fracture, determined by the tensile test specified in 7.4, in %.

A Minimum elongation after fracture, guaranteed by the manufacturer for the finished cylinder,

D Outside diameter of the cylinder as given in the design drawing, in mm (see Figure 1).

n Ratio of diameter of bend test former to the thickness of the test piece (see Table 4).

R Actual value of yield strength, determined by the tensile test specified in 7.4, in N/mm .

R Minimum value of yield strength, guaranteed by the manufacturer for the finished cylinder, in

R Actual value of tensile strength, determined by the tensile test specified in 7.4, in N/mm .

R Minimum value of tensile strength, guaranteed by the manufacturer for the finished cylinder,