Tanks for the transport of dangerous goods - Metallic gravity-discharge tanks - Design and construction

This document specifies requirements for the design and construction of metallic gravity-discharge tanks intended for the carriage of substances having a vapour pressure not exceeding 110 kPa (1,1 bar) (absolute pressure) at 50 °C.
NOTE 1   Gravity discharge tanks have no maximum working pressure. However, during operation, pressure in the shell may occur, for example due to flow restrictions in vapour recovery systems or opening pressures of breather devices. It is important that these operating pressures do not exceed the test pressure of the tank or 0,5 bar, whichever is the highest.
This document specifies requirements for openings, closures, pipework, mountings for service equipment and structural equipment.
NOTE 2   This document does not specify requirements for items of service equipment other than pipework.
This document is applicable to aircraft refuelers that are used on public roads. It is also applicable to inter-modal tanks (e.g. tank containers and tank swap bodies) for the transport of dangerous goods by road and rail.
NOTE 3   This document is not applicable to fixed rail tank wagons.

Tanks für die Beförderung gefährlicher Güter - Metalltanks mit Entleerung durch Schwerkraft - Auslegung und Bau

Dieses Dokument legt Anforderungen an die Auslegung und den Bau von Metalltanks mit Entleerung durch Schwerkraft fest, die für die Beförderung von Stoffen mit einem Dampfdruck von höchstens 110 kPa (1,1 bar) (absoluter Druck) bei 50 °C vorgesehen sind.
ANMERKUNG 1 Tanks mit Entleerung durch Schwerkraft haben keinen höchsten Betriebsdruck. Während des Betriebs kann es allerdings zu einem Druckaufbau im Tankkörper auftreten, z. B. aufgrund des begrenzten Durchflusses durch das System zur Gasrückführung, oder der Öffnungsdrücke von Belüftungseinrichtungen. Es ist wichtig zu beachten, dass diese Betriebsdrücke den Prüfdruck des Tanks oder 0,5 bar, je nachdem, welcher Wert am höchsten ist, nicht überschreiten.
Dieses Dokument legt Anforderungen an Öffnungen, Verschlüsse, Rohrleitungen, Halterungen für die Bedienungsausrüstung und die bauliche Ausrüstung fest.
ANMERKUNG 2 Abgesehen von durch den Tankkörper geführten Rohrleitungen legt dieses Dokument keine Anforderungen an Teile der Bedienungsausrüstung fest.
Dieses Dokument ist anzuwenden für Flugfeldtankfahrzeuge, wenn diese auf öffentlichen Straßen eingesetzt werden. Es gilt auch für intermodale Tanks (z. B. Tankcontainer und Tankwechselbehälter) für die Beförderung gefährlicher Güter auf der Straße und der Schiene.
ANMERKUNG 3 Dieses Dokument ist nicht anzuwenden für fest verbundene Eisenbahnkesselwagen.

Citernes pour le transport de matières dangereuses - Citernes métalliques à vidange par gravité - Conception et construction

Le présent document spécifie les exigences de conception et de construction des citernes métalliques à vidange par gravité pour le transport de matières dont la pression de vapeur ne dépasse pas 110 kPa (1,1 bar) (pression absolue) à 50 °C.
NOTE 1   Les citernes à vidange par gravité n’ont pas de pression maximale de service. Toutefois, en service, une pression peut être générée dans le réservoir, par exemple en raison de restrictions du flux dans les systèmes de récupération de vapeur ou des pressions d’ouverture des dispositifs de respiration. Il est important que ces pressions de service ne dépassent pas la pression d’épreuve de la citerne ou 0,5 bar si cette dernière valeur est supérieure.
Le présent document spécifie des exigences relatives aux ouvertures, aux fermetures, aux tuyauteries et au montage des équipements de service et équipements de structure.
NOTE 2   Le présent document ne spécifie pas d’exigences concernant les équipements de service autres que les tubes traversant le réservoir.
Le présent document est applicable aux avitailleurs d’aéronefs utilisés sur des voies publiques. Il s’applique également aux citernes de transport combiné (par exemple conteneurs-citernes et caisses mobiles citernes) pour le transport de matières dangereuses par route et par chemin de fer.
NOTE 3   Le présent document ne s’applique pas aux wagons-citernes fixes.

Cisterne za prevoz nevarnega blaga - Kovinske cisterne z gravitacijskim praznjenjem - Konstruiranje in izdelava

General Information

Status
Published
Public Enquiry End Date
03-Jul-2019
Publication Date
10-Aug-2020
Technical Committee
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
30-Jul-2020
Due Date
04-Oct-2020
Completion Date
11-Aug-2020

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SLOVENSKI STANDARD
SIST EN 13094:2020
01-september-2020
Nadomešča:
SIST EN 13094:2015
Cisterne za prevoz nevarnega blaga - Kovinske cisterne z gravitacijskim
praznjenjem - Konstruiranje in izdelava

Tanks for the transport of dangerous goods - Metallic gravity-discharge tanks - Design

and construction
Tanks für die Beförderung gefährlicher Güter - Metalltanks mit Entleerung durch
Schwerkraft - Auslegung und Bau

Citernes pour le transport de matières dangereuses - Citernes métalliques à vidange par

gravité - Conception et construction
Ta slovenski standard je istoveten z: EN 13094:2020
ICS:
13.300 Varstvo pred nevarnimi Protection against dangerous
izdelki goods
23.020.20 Posode in vsebniki, montirani Vessels and containers
na vozila mounted on vehicles
SIST EN 13094:2020 en,fr,de

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

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SIST EN 13094:2020
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SIST EN 13094:2020
EN 13094
EUROPEAN STANDARD
NORME EUROPÉENNE
July 2020
EUROPÄISCHE NORM
ICS 13.300; 23.020.20 Supersedes EN 13094:2015
English Version
Tanks for the transport of dangerous goods - Metallic
gravity-discharge tanks - Design and construction

Citernes pour le transport de matières dangereuses - Tanks für die Beförderung gefährlicher Güter -

Citernes métalliques à vidange par gravité - Conception Metalltanks mit Entleerung durch Schwerkraft -

et construction Auslegung und Bau
This European Standard was approved by CEN on 1 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 13094:2020 E

worldwide for CEN national Members.
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SIST EN 13094:2020
EN 13094:2020 (E)
Contents Page

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

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

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

3 Terms, definitions, symbols and abbreviations .................................................................................. 9

3.1 Terms and definitions ................................................................................................................................... 9

3.2 Symbols ............................................................................................................................................................ 10

3.3 Abbreviations ................................................................................................................................................. 11

4 Service equipment ........................................................................................................................................ 11

5 Materials .......................................................................................................................................................... 11

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

5.2 Material properties ...................................................................................................................................... 12

5.3 Compatibility of tank materials with substances carried .............................................................. 13

6 Design ................................................................................................................................................................ 14

6.1 Shell cross-section ........................................................................................................................................ 14

6.2 Design verification ....................................................................................................................................... 16

6.3 Dynamic conditions ..................................................................................................................................... 17

6.4 Pressure conditions ..................................................................................................................................... 18

6.5 Partial vacuum conditions ......................................................................................................................... 18

6.6 Design temperature ..................................................................................................................................... 18

6.7 Design stress ................................................................................................................................................... 18

6.8 Shell thicknesses ........................................................................................................................................... 18

6.9 Shell openings, neck rings and closures ............................................................................................... 23

6.10 Shell partitions, surge plates and baffles ............................................................................................. 24

6.11 Shell supporting structure ......................................................................................................................... 24

6.12 Other attachments to the shell ................................................................................................................. 25

6.13 Pipework passing through the shell ...................................................................................................... 25

6.14 Protection of service equipment mounted on the tank top ........................................................... 26

6.15 Electrical bonding and earthing .............................................................................................................. 33

7 Manufacture of the shell ............................................................................................................................. 33

7.1 General.............................................................................................................................................................. 33

7.2 Cutting and edge preparation .................................................................................................................. 33

7.3 Forming ............................................................................................................................................................ 34

7.4 Welding ............................................................................................................................................................. 34

7.5 Manufacturing tolerances .......................................................................................................................... 36

7.6 Rectification of defects ................................................................................................................................ 37

8 Marking ............................................................................................................................................................ 37

Annex A (informative) Methods of design verification ................................................................................ 38

A.1 General.............................................................................................................................................................. 38

A.2 Dynamic testing ............................................................................................................................................. 38

A.2.1 Methods for the verification of the loads specified in 6.3.2 ........................................................... 38

A.2.2 Test programme ............................................................................................................................................ 39

A.3 Finite element method ................................................................................................................................ 39

A.3.1 General.............................................................................................................................................................. 39

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SIST EN 13094:2020
EN 13094:2020 (E)

A.3.2 Software selection ........................................................................................................................................ 40

A.3.3 Validation ........................................................................................................................................................ 40

A.3.4 Finite element mesh .................................................................................................................................... 41

A.3.5 Mesh criteria .................................................................................................................................................. 41

A.3.6 Approval........................................................................................................................................................... 42

A.3.7 Requirements relating to the methods for determining stresses ............................................... 42

A.3.8 Assessment criteria ..................................................................................................................................... 43

A.3.9 Permanent record ........................................................................................................................................ 45

A.4 Reference design ........................................................................................................................................... 45

A.5 Calculation method — worksheet .......................................................................................................... 46

A.5.1 Introduction ................................................................................................................................................... 46

A.5.2 Symbols and units......................................................................................................................................... 48

A.5.3 Adopted thicknesses .................................................................................................................................... 54

A.5.4 Mandatory thicknesses ............................................................................................................................... 54

A.5.4.1 Calculated thicknesses ................................................................................................................................ 54

A.5.5 Verification of stresses at test pressure ............................................................................................... 55

A.5.6 Verification of stresses in service condition ....................................................................................... 58

A.5.7 Calculation of stress in shell attachments ........................................................................................... 64

A.5.8 End made up of several welded elements ............................................................................................ 65

Annex B (normative) Method of measurement of specific resilience ..................................................... 66

B.1 Principle ........................................................................................................................................................... 66

B.2 Apparatus ........................................................................................................................................................ 66

B.3 Samples of materials to be tested ........................................................................................................... 70

B.4 Procedure ........................................................................................................................................................ 71

B.5 Results .............................................................................................................................................................. 72

B.5.1 Test values....................................................................................................................................................... 72

B.5.2 Calculation of results ................................................................................................................................... 73

B.5.3 Acceptability of material ............................................................................................................................ 73

B.6 Global resilience [see 6.8.2.2 i)] .............................................................................................................. 73

B.7 Comparative methods to calculate the energy absorbed during an overturning or

impact [see 6.8.2.2 j)] .................................................................................................................................. 73

B.7.1 Calculation of absorbed energy ............................................................................................................... 73

B.7.2 Test procedure .............................................................................................................................................. 74

B.7.3 Finite element analysis procedure to be adopted ............................................................................ 74

Annex C (normative) Design of neck rings, flanges and closures ............................................................. 75

Annex D (informative) Examples of welding details ..................................................................................... 76

D.1 General ............................................................................................................................................................. 76

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SIST EN 13094:2020
EN 13094:2020 (E)

D.2 Shell construction ......................................................................................................................................... 76

D.2.1 Fillet welds ...................................................................................................................................................... 76

D.2.2 Joint types ........................................................................................................................................................ 78

D.3 Attachment of reinforcements ................................................................................................................. 88

D.3.1 Attachment of reinforcements designed to absorb dynamic stress ........................................... 88

D.3.2 Attachment of reinforcements not designed to absorb dynamic stress ................................... 88

D.4 Attachment of branches.............................................................................................................................. 89

D.5 Attachment of flanges, collars and reinforcing pads to the shell ................................................ 91

D.6 Attachment of flanges onto branches .................................................................................................... 92

D.7 Attachment of heating channels to shells ............................................................................................ 93

Bibliography ................................................................................................................................................................. 95

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SIST EN 13094:2020
EN 13094:2020 (E)
European foreword

This document (EN 13094:2020) has been prepared by Technical Committee CEN/TC 296 “Tanks for

the transport of dangerous goods”, the secretariat of which is held by AFNOR.

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 January 2021, and conflicting national standards shall

be withdrawn at the latest by January 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 supersedes EN 13094:2015.

Compared with EN 13094:2015, the following are the principal changes that have been made:

a) changes to reflect the change in scope from low pressure to gravity-discharge applications;

b) updates to the normative references;
c) changes to the terms, definitions, symbols and abbreviations;

d) simplification of service equipment requirements by reference to regulatory requirements;

e) clarification of impact strength required at lower design temperatures;

f) new requirements on the cross-sectional shapes of shells for non-circular cross-sections, sumps

and other external projections and cut-outs within the contour of a side or bottom of the shell;

g) clearer requirements on design verification;
h) expansion of provisions for the dynamic conditions used for tank design;
i) provisions for pressure conditions revised to reflect the change in scope;
j) clarification that maximum stress refers to maximum membrane stress;
k) expansion of requirements on shell thickness to clarify and include cut-outs;
l) addition of preferred location of tank top service equipment;
m) partial easing of restriction on longitudinal partitions;
n) additional requirements on pipes passing through the shell;

o) general revisions on the protection of service equipment mounted on the top of the tank;

p) new requirements for electrical bonding and earthing;

q) changes to the assessment criteria for welds not covered by either Annex D or EN 14025;

r) examination and testing of welds referred to EN 12972;
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SIST EN 13094:2020
EN 13094:2020 (E)
s) manufacturing tolerances referred to EN 12972;
t) new requirements for minimum shell marking;
u) tank plate requirements addressed by reference to regulatory requirements;

v) clarification and revision of the application of the different methods of design verification

in Annex A;

w) addition of finite element analysis as a method of measurement of specific resilience in Annex B;

x) changes to clarify the informative examples of welding details in Annex D; and

y) an addition to the bibliography.
This document has been submitted for reference in:
— the RID; and
— the technical annexes of the ADR.

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 may lead to temporary non-compliances with the

clauses of this document.”

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 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 13094:2020
EN 13094:2020 (E)
1 Scope

This document specifies requirements for the design and construction of metallic gravity-discharge

tanks intended for the carriage of substances having a vapour pressure not exceeding 110 kPa (1,1 bar)

(absolute pressure) at 50 °C.

NOTE 1 Gravity-discharge tanks have no maximum working pressure. However, during operation, pressure in

the shell may occur, for example due to flow restrictions in vapour recovery systems or opening pressures of

breather devices. It is important that these operating pressures do not exceed the test pressure of the tank

or 0,5 bar, whichever is the highest.

This document specifies requirements for openings, closures, pipework, mountings for service

equipment and structural equipment.

NOTE 2 This document does not specify requirements for items of service equipment other than pipes passing

through the shell.

This document is applicable to aircraft refuelers that are used on public roads. It is also applicable to

inter-modal tanks (e.g. tank containers and tank swap bodies) for the transport of dangerous goods by

road and rail.
NOTE 3 This document is not applicable to fixed rail tank wagons.
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 10204, Metallic products - Types of inspection documents

EN 10028-2, Flat products made of steels for pressure purposes - Part 2: Non-alloy and alloy steels with

specified elevated temperature properties

EN 12972, Tanks for transport of dangerous goods - Testing, inspection and marking of metallic tanks

EN 13317, Tanks for transport of dangerous goods - Service equipment for tanks - Manhole cover assembly

EN 14025, Tanks for the transport of dangerous goods - Metallic pressure tanks - Design and construction

EN 13445-3:2014, Unfired pressure vessels - Part 3: Design
EN 14564, Tanks for transport of dangerous goods - Terminology

EN ISO 3834-1, Quality requirements for fusion welding of metallic materials - Part 1: Criteria for the

selection of the appropriate level of quality requirements (ISO 3834-1)

EN ISO 3834-2, Quality requirements for fusion welding of metallic materials - Part 2: Comprehensive

quality requirements (ISO 3834-2)

EN ISO 5817, Welding - Fusion-welded joints in steel, nickel, titanium and their alloys (beam welding

excluded) - Quality levels for imperfections (ISO 5817)

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

6892-1)
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SIST EN 13094:2020
EN 13094:2020 (E)

EN ISO 7500-1, Metallic materials - Calibration and verification of static uniaxial testing machines - Part

1: Tension/compression testing machines - Calibration and verification of the force-measuring system (ISO

7500-1)

EN ISO 9606-1, Qualification testing of welders - Fusion welding - Part 1: Steels (ISO 9606-1)

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

(ISO 9606-2)

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

(ISO 10042)

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

mechanized and automatic welding of metallic materials (ISO 14732)

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

(ISO 15607)

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

procedure specification - Part 1: Arc welding (ISO 15609-1)

EN ISO 15609-2, Specification and qualification of welding procedures for metallic materials - Welding

procedure specification - Part 2: Gas welding (ISO 15609-2)

EN ISO 15613, Specification and qualification of welding procedures for metallic materials - Qualification

based on pre-production welding test (ISO 15613)

EN ISO 15614 (all parts), Specification and qualification of welding procedures for metallic materials -

Welding procedure test (ISO 15614, all parts)

EN ISO 17635, Non-destructive testing of welds - General rules for metallic materials (ISO 17635)

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

techniques with film (ISO 17636-1)

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

EN ISO 17640, Non-destructive testing of welds - Ultrasonic testing - Techniques, testing levels, and

assessment (ISO 17640)

ISO 1496-3, Series 1 freight containers - Specification and testing - Part 3: Tank containers for liquids,

gases and pressurized dry bulk
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SIST EN 13094:2020
EN 13094:2020 (E)
3 Terms, definitions, symbols and abbreviations
3.1 Terms and definitions

For the purposes of this document, the terms and definitions given in EN 14564, EN 13445 and the

following 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 https://www.iso.org/obp/ui
NOTE See also Figure A.1.
3.1.1
section modulus

second moment of area of a structure (and, where appropriate, its associated shell) about its neutral

axis divided by the maximum distance from the neutral axis to the extreme fibre of the section used in

the calculation
3.1.2
specific resilience

integral of the applied force and the measured deflection of a test piece up to the point at which the test

bar punctures the test piece, as indicated by the point of maximum force
3.1.3
global resilience

ability of a shell with reinforcement(s) to withstand a sideways impact with a beam

3.1.4
mild steel
2 2

steel which has a minimum tensile strength between 360 N/mm and 440 N/mm , and a steel referred

to in EN material standards as “mild steel”, with a minimum tensile strength between 360 N/mm and

490 N/mm and a minimum elongation at fracture conforming to 5.2.2.3.1 calculated using the formula

in 5.2.2.3.2
3.1.5
maximum design mass

sum of the unladen mass of the tank and the mass of the maximum permissible load for which the tank

is designed
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SIST EN 13094:2020
EN 13094:2020 (E)
3.2 Symbols
For the purposes of this document, the following symbols apply.
A percentage (%) elongation after fracture
A minimum percentage (%) elongation after fracture of the metal used (see 6.8.1)

B pitch circle diameter or, if elliptical, average of major and minor diameters, in millimetres

(mm)

c distance from the start of a knuckle bend to the edge of a shell, in millimetres (mm)

NOTE 1 This is used for the attachment of a dished end to a shell.
e shell thickness, in millimetres (mm)
e thickness of a flat closure, in millimetres (mm)
e thickness of a domed closure, in millimetres (mm)
e thickness of an end or partition, in millimetres (mm)
e thickness of a reinforcing section, in millimetres (mm)
e thickness of an opening flange, in millimetres (mm)
e thickness of a domed closure flange, in millimetres (mm)
e adopted thickness(es) of a shell, in millimetres (mm)
e minimum thickness of a shell according to 6.8.1, in millimetres (mm)
v, min
e0 minimum thickness of shell in reference steel, in millimetres (mm)
e thickness of the thickest part of a shell, in millimetres (mm)
e thickness of the thinner part of the metal used, in millimetres (mm)
g acceleration due to gravity, in metres per second squared (m/s )
NOTE 2 The value of g is 9,81 m/s .
L overlap of a lapped joint, in millimetres (mm)
L length of reinforcing piece, in millimetres (mm)
L length of reinforcing ring, in millimetres (mm)

L0 initial gauge length of the test piece used in the tensile test, in millimetres (mm)

l length of transition between plates of different thickness, in millimetres (mm)

l length of overlap of swaged edge, in millimetres (mm)
l length of weld at base of swaged joint, in millimet
...

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