LPG equipment and accessories - Static welded steel cylindrical tanks, serially produced for the storage of Liquefied Petroleum Gas (LPG) having a volume not greater than 13 m³ - Design and manufacture

This European Standard specifies requirements for the design and manufacture of static welded steel cylindrical tanks, serially produced for the storage of liquefied petroleum gas (LPG) with a volume not greater than 13 m³ and for installation above or below ground.

Flüssiggas-Geräte und Ausrüstungsteile - Ortsfeste, geschweißte zylindrische Behälter aus Stahl, die serienmäßig für die Lagerung von Flüssiggas (LPG) hergestellt werden, mit einem Fassungsvermögen bis 13 m³ - Gestaltung und Herstellung

Dieses Dokument legt Anforderungen hinsichtlich der Auslegung und Herstellung orts¬fester, geschweißter zylindrischer Druckbehälter aus Stahl fest, die in Serie für die Lagerung von Flüssiggas (LPG) gefertigt werden, mit einem Fassungsraum bis zu 13 m3 für oberirdische Aufstellung oder den Einbau im Untergrund.

Équipements pour gaz de pétrole liquéfié et leurs accessoires - Réservoirs cylindriques fixes, aériens, en acier soudé, fabriqués en série pour le stockage de gaz de pétrole liquéfié (GPL) ayant un volume inférieur ou égal à 13 m³ - Conception et fabrication

Le présent document spécifie les exigences pour la conception et la fabrication en série des récipients sous pression cylindriques fixes, en acier soudé, d’un volume inférieur ou égal à 13 m³, destinés au stockage aérien ou enterré de gaz de pétrole liquéfié (GPL).

Oprema in pribor za utekočinjeni naftni plin (UNP) - Nepremične varjene valjaste posode iz jekla serijske proizvodnje za skladiščenje utekočinjenega naftnega plina s prostornino do vključno 13 m³ - Konstruiranje in proizvodnja

General Information

Status
Published
Public Enquiry End Date
31-Jan-2017
Publication Date
14-Sep-2020
Technical Committee
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
28-Aug-2020
Due Date
02-Nov-2020
Completion Date
15-Sep-2020

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SLOVENSKI STANDARD
SIST EN 12542:2020
01-oktober-2020
Nadomešča:
SIST EN 12542:2010
Oprema in pribor za utekočinjeni naftni plin (UNP) - Nepremične varjene valjaste

posode iz jekla serijske proizvodnje za skladiščenje utekočinjenega naftnega plina

s prostornino do vključno 13 m³ - Konstruiranje in proizvodnja

LPG equipment and accessories - Static welded steel cylindrical tanks, serially produced

for the storage of Liquefied Petroleum Gas (LPG) having a volume not greater than 13

m³ - Design and manufacture

Flüssiggas-Geräte und Ausrüstungsteile - Ortsfeste, geschweißte zylindrische Behälter

aus Stahl, die serienmäßig für die Lagerung von Flüssiggas (LPG) hergestellt werden,

mit einem Fassungsvermögen bis 13 m³ - Gestaltung und Herstellung

Équipements pour gaz de pétrole liquéfié et leurs accessoires - Réservoirs cylindriques

fixes, aériens, en acier soudé, fabriqués en série pour le stockage de gaz de pétrole

liquéfié (GPL) ayant un volume inférieur ou égal à 13 m³ - Conception et fabrication

Ta slovenski standard je istoveten z: EN 12542:2020
ICS:
23.020.10 Nepremične posode in Stationary containers and
rezervoarji tanks
SIST EN 12542:2020 en,fr,de

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

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SIST EN 12542:2020
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SIST EN 12542:2020
EN 12542
EUROPEAN STANDARD
NORME EUROPÉENNE
August 2020
EUROPÄISCHE NORM
ICS 23.020.30 Supersedes EN 12542:2010
English Version
LPG equipment and accessories - Static welded steel
cylindrical pressure vessels, serially produced for the
storage of Liquefied Petroleum Gas (LPG) having a volume
not greater than 13 m³ - Design and manufacture

Équipements pour gaz de pétrole liquéfié et leurs Flüssiggas-Geräte und Ausrüstungsteile - Ortsfeste,

accessoires - Réservoirs cylindriques fixes, aériens, en geschweißte zylindrische Behälter aus Stahl, die

acier soudé, fabriqués en série pour le stockage de gaz serienmäßig für die Lagerung von Flüssiggas (LPG)

de pétrole liquéfié (GPL) ayant un volume inférieur ou hergestellt werden, mit einem Fassungsvermögen bis

égal à 13 m³ - Conception et fabrication 13 m³ - Gestaltung und Herstellung
This European Standard was approved by CEN on 15 June 2020.

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

© 2020 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 12542:2020 E

worldwide for CEN national Members.
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SIST EN 12542:2020
EN 12542:2020 (E)
Contents Page

European foreword ....................................................................................................................................................... 6

Introduction .................................................................................................................................................................... 7

1 Scope .................................................................................................................................................................... 8

2 Normative references .................................................................................................................................... 8

3 Terms and definitions ................................................................................................................................ 10

3.1 General terms ................................................................................................................................................ 10

3.2 Terms for coatings ....................................................................................................................................... 12

4 Materials .......................................................................................................................................................... 12

4.1 Environmental............................................................................................................................................... 12

4.2 Shells and ends .............................................................................................................................................. 12

4.3 Pressure parts other than shell or ends .............................................................................................. 14

4.4 Parts welded to the pressure vessel ...................................................................................................... 14

4.5 Welding consumables ................................................................................................................................. 14

4.6 Inspection documents for materials ..................................................................................................... 14

4.7 Non-metallic materials (gaskets) ........................................................................................................... 14

5 Design ............................................................................................................................................................... 14

5.1 General ............................................................................................................................................................. 14

5.2 Temperature .................................................................................................................................................. 15

5.3 Pressure ........................................................................................................................................................... 15

5.4 Vacuum conditions ...................................................................................................................................... 15

5.5 Support loadings .......................................................................................................................................... 16

5.6 Lifting lugs loadings .................................................................................................................................... 16

6 Openings .......................................................................................................................................................... 16

6.1 General ............................................................................................................................................................. 16

6.2 Reinforcement ............................................................................................................................................... 16

6.3 Position of welds and openings ............................................................................................................... 16

7 Workmanship and manufacture ............................................................................................................. 16

7.1 General ............................................................................................................................................................. 16

7.2 Environment .................................................................................................................................................. 17

7.3 Control and traceability of materials .................................................................................................... 17

7.4 Manufacturing tolerances ......................................................................................................................... 17

7.5 Acceptable weld details ............................................................................................................................. 17

7.6 Formed pressure parts............................................................................................................................... 18

7.7 Welding ............................................................................................................................................................ 20

7.8 Post weld heat treatment .......................................................................................................................... 21

7.9 Repairs ............................................................................................................................................................. 22

8 Non-pressure attachments ....................................................................................................................... 22

8.1 Attachments ................................................................................................................................................... 22

8.2 Position ............................................................................................................................................................ 22

8.3 Vent hole .......................................................................................................................................................... 22

9 Inspection and testing ................................................................................................................................ 23

9.1 Visual examination of welds .................................................................................................................... 23

9.2 Non-destructive testing (NDT) ................................................................................................................ 23

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SIST EN 12542:2020
EN 12542:2020 (E)

9.3 Non-destructive testing techniques ....................................................................................................... 24

9.4 Marking for non-destructive testing ...................................................................................................... 25

9.5 Qualification of personnel ......................................................................................................................... 25

9.6 Acceptance criteria ...................................................................................................................................... 25

9.7 Production test plates (coupon plates) ................................................................................................ 26

9.8 Final assessment ........................................................................................................................................... 27

10 Surface treatment and finishing .............................................................................................................. 28

10.1 Environmental considerations ................................................................................................................ 28

10.2 Above ground pressure vessels ............................................................................................................... 28

10.3 Underground pressure vessels ................................................................................................................ 29

10.4 Finishing operations .................................................................................................................................... 29

11 Marking and certification .......................................................................................................................... 29

12 Records and documentation ..................................................................................................................... 30

12.1 Records to be obtained by the manufacturer ..................................................................................... 30

12.2 Documents to be prepared by the manufacturer .............................................................................. 30

Annex A (informative) Design pressure and filling conditions ................................................................. 31

A.1 Above ground pressure vessels ............................................................................................................... 31

A.1.1 Design pressure (p) ...................................................................................................................................... 31

A.1.2 Filling conditions .......................................................................................................................................... 31

A.1.3 Calculation of maximum fill ...................................................................................................................... 32

A.2 Underground pressure vessels — Design pressure ......................................................................... 32

Annex B (normative) Tolerances on pressure vessels ................................................................................. 33

B.1 Mean external diameter ............................................................................................................................. 33

B.2 Out of roundness ........................................................................................................................................... 33

B.3 Deviation from the straight line .............................................................................................................. 33

B.4 Irregularities in circular profile .............................................................................................................. 33

B.5 Thickness tolerance ..................................................................................................................................... 34

B.6 Profile................................................................................................................................................................ 34

B.7 Surface alignment ......................................................................................................................................... 35

B.8 Attachments, nozzles and fittings ........................................................................................................... 35

Annex C (normative) Hydraulic pressure test ................................................................................................. 36

C.1 Temporary fittings ....................................................................................................................................... 36

C.2 Pressure gauges ............................................................................................................................................ 36

C.3 Pressurizing agent ........................................................................................................................................ 36

C.4 Avoidance of shocks ..................................................................................................................................... 36

C.5 Test procedure .............................................................................................................................................. 36

Annex D (normative) Imperfections ................................................................................................................... 37

Annex E (normative) Design formulae for pressure vessels ...................................................................... 39

E.1 Allowable stresses ........................................................................................................................................ 39

E.2 Design formulae ............................................................................................................................................ 39

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SIST EN 12542:2020
EN 12542:2020 (E)

E.2.1 General ............................................................................................................................................................. 39

E.2.2 Cylindrical shell calculation ..................................................................................................................... 39

E.2.3 Torispherical end calculation .................................................................................................................. 39

E.2.4 Ellipsoidal end calculation ........................................................................................................................ 40

E.2.5 Hemispherical ends ..................................................................................................................................... 42

E.2.6 Equations for calculating β ....................................................................................................................... 42

E.3 Nozzle reinforcement ................................................................................................................................. 43

E.3.1 General ............................................................................................................................................................. 43

E.3.2 Size of openings ............................................................................................................................................ 43

E.3.3 Distance between openings or branches ............................................................................................. 43

E.3.4 Openings and branches .............................................................................................................................. 44

E.3.5 Cylindrical shells and ends with openings .......................................................................................... 44

E.3.6 Shell reinforcement ..................................................................................................................................... 44

E.3.7 Extent of reinforcement ............................................................................................................................. 44

E.3.8 Elliptical openings ....................................................................................................................................... 44

E.3.9 Welded branches .......................................................................................................................................... 45

E.3.10 Compensating plates ................................................................................................................................... 45

E.3.11 Reinforcement − General .......................................................................................................................... 45

E.3.12 Reinforcement by pads .............................................................................................................................. 45

E.3.13 Reinforcement by branches ..................................................................................................................... 46

E.3.14 Branch connections normal to the pressure vessel wall ............................................................... 46

Annex F (informative) Measurement of shell peaking ................................................................................ 50

F.1 Profile gauge .................................................................................................................................................. 50

F.2 Peaking survey .............................................................................................................................................. 50

Annex G (informative) Examples of joints ........................................................................................................ 53

Annex H (informative) Method of determining reflectivity indices (above ground pressure

vessels)............................................................................................................................................................. 57

Annex I (normative) External protection of underground pressure vessels ...................................... 58

I.1 General ............................................................................................................................................................. 58

I.2 Unmonitored protection systems .......................................................................................................... 58

I.3 Monitored protection systems ................................................................................................................ 58

I.3.1 Systems incorporating cathodic protection ....................................................................................... 58

I.3.2 Systems incorporating a protective envelope ................................................................................... 59

I.3.3 Other systems ................................................................................................................................................ 59

Annex J (informative) Exterior corrosion protective coating with special performance

against chemical and mechanical attacks ........................................................................................... 60

J.1 General ............................................................................................................................................................. 60

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SIST EN 12542:2020
EN 12542:2020 (E)

J.2 Requirements ................................................................................................................................................. 60

J.2.1 General requirements ................................................................................................................................. 60

J.2.2 Requirements for the coating material ................................................................................................ 60

J.2.3 Requirements for the coating ................................................................................................................... 61

J.2.4 Requirements for the coating process .................................................................................................. 62

J.3 Testing .............................................................................................................................................................. 62

J.3.1 Testing for the coating material .............................................................................................................. 62

J.3.2 Testing for the coating ................................................................................................................................ 63

J.3.3 Documentation of the coating procedure ............................................................................................ 64

J.3.4 Test reports and certificates..................................................................................................................... 65

J.4 Supervision during production ............................................................................................................... 65

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

requirements of EU Directive 2014/68/EU ........................................................................................ 66

Bibliography ................................................................................................................................................................. 68

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SIST EN 12542:2020
EN 12542:2020 (E)
European foreword

This document (EN 12542:2020) has been prepared by Technical Committee CEN/TC 286 “Liquefied

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

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 February 2021, and conflicting national standards shall

be withdrawn at the latest by February 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.
This document supersedes EN 12542:2010.

The following main changes have been introduced during the revision of EN 12542:2010:

— a reference to “CEN/TS 16765 LPG equipment and accessories - Environmental considerations for

CEN/TC 286 standards” has been added and the existing wording has been amended (including the

deletion of environmental references throughout this document);
— Annex J Environmental checklist has been deleted;

— inclusion of the use of compensation calculations from EN 13445-3:2014, in order to reduce the

distance between openings or branches;

— a new informative Annex J Exterior corrosion protective coating with special performance against

chemical and mechanical attacks has been added.

According to the CEN-CENELEC Internal Regulations, the national standards organisations 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.
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SIST EN 12542:2020
EN 12542:2020 (E)
Introduction

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 and does not

absolve the user from legal obligations at any stage.

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

covered in CEN/TS 16765, LPG equipment and accessories — Environmental considerations for

CEN/TC 286 standards, and this Technical Specification should be read in conjunction with this document.

This 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:

a) design;
b) manufacture;
c) packaging;
d) use and operation;
e) disposal.

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

It is recommended that manufacturers develop an environmental management policy. For guidance

see the ISO 14000 series.

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

appropriately qualified and experienced people.
All pressures are gauge pressures unless otherwise stated.

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 may be

beneficial to refer to the leaflet “Measurement Uncertainty Leaflet (SP INFO 2000 27 uncertainty.pdf )”.

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SIST EN 12542:2020
EN 12542:2020 (E)
1 Scope

This document specifies requirements for the design and manufacture of static welded steel cylindrical

pressure vessels, serially produced for the storage of liquefied petroleum gas (LPG) with a volume not

greater than 13 m and for installation above or below ground.
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 764-5:2014, Pressure equipment — Part 5: Inspection documentation of metallic materials and

compliance with the material specification
EN 837-2:1997, Pressure
...

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