SIST EN 14025:2013+A1:2016
(Main)Tanks for the transport of dangerous goods - Metallic pressure tanks - Design and construction
Tanks for the transport of dangerous goods - Metallic pressure tanks - Design and construction
This European Standard specifies the minimum requirements for the design and construction of metallic pressure tanks having a maximum working or test pressure exceeding 50 kPa (0,5 bar), for the transport of dangerous goods by road and rail and sea. This European Standard includes requirements for openings,closures and structural equipment; it does not cover requirements of service equipment. For tanks for the
transport of cryogenic liquids, EN 13530-1 and EN 13530-2 apply.
NOTE 1 Design and construction of pressure tanks according to the scope of this European Standard are primarily subject to the requirements of RID/ADR, 6.8.2.1, 6.8.3.1 and 6.8.5, as relevant. In addition, the relevant requirements of RID/ADR, columns 12 and 13 of Table A to chapter 3.2, 4.3 and 6.8.2.4 apply. For the structural equipment subsections 6.8.2.2 and 6.8.3.2 apply, as relevant. The definitions of RID/ADR 1.2.1 are referred to. For portable tanks see also Chapter 4.2 and Sections 6.7.2 and 6.7.3 of RID and ADR. In addition, the relevant requirements of RID/ADR, columns 10 and 11 of Table A to Chapter 3.2, 4.2, 6.7.2 and 6.7.3 apply. The paragraph numbers above relate to the 2013 issue of RID/ADR which are subject to regular revisions. This can lead to temporary non-compliances with EN 14025. It is
important to know that requirements of RID/ADR take precedence over any clause of this standard.
NOTE 2 This standard is applicable to liquefied gases including LPG, however for a dedicated LPG standard see EN 12493.
If not otherwise specified, provisions which take up the whole width of the page apply to all kind of tanks.
Provisions contained in a single column apply only to:
road and rail pressure tanks according to RID/ADR chapter 6.8 (left-hand column); ortable tanks according to RID/ADR chapter 6.7 right-hand column
Tanks für die Beförderung gefährlicher Güter - Metallische Drucktanks - Auslegung und Bau
Diese Europäische Norm legt die Mindestanforderungen für Auslegung und Bau von metallischen Drucktanks mit einem maximalen Betriebs- oder Prüfdruck von mehr als 50 kPa (0,5 bar) für die Beförderung gefährlicher Güter auf der Straße, mit der Eisenbahn und mit Seeschiffen fest. Diese Europäische Norm enthält Anforderungen an Öffnungen, Verschlüsse und die bauliche Ausrüstung; Anforderungen an die Bedienungsausrüstung werden nicht behandelt. Zu Tanks für die Beförderung von tiefkalten Flüssigkeiten siehe EN 13530-1 und EN 13530 2.
ANMERKUNG 1 Auslegung und Bau von Drucktanks entsprechend des Anwendungsbereichs dieser Europäischen Norm unterliegen im Wesentlichen den zutreffenden Vorschriften in 6.8.2.1, 6.8.3.1 und 6.8.5 der RID/des ADR. Zusätzlich gelten außerdem die zutreffenden Anforderungen nach Kapitel 3.2, Tabelle A, Spalten 12 und 13, 4.3 und 6.8.2.4 der RID/des ADR. Für die bauliche Ausrüstung gelten 6.8.2.2 bzw. 6.8.3.2. Auf die in 1.2.1 der RID/des ADR enthaltenen Begriffs¬bestimmungen wird verwiesen. Zu ortsbeweglichen Tanks siehe auch Kapitel 4.2 sowie 6.7.2 und 6.7.3 der RID und des ADR. Darüber hinaus gelten die maßgebenden Anforderungen in Tabelle A, Spalten 10 und 11, 3.2, 4.2, 6.7.2 und 6.7.3 von RID/ADR. Die oben angegebene Nummerierung der Kapitel bezieht sich die Ausgaben der RID/des ADR von 2013, die regelmäßig überarbeitet werden. Daher kann es vorübergehend zu Nichtübereinstimmungen mit EN 14025 kommen. Es wird darauf hingewiesen, dass die Anforderungen der RID/des ADR Vorrang gegenüber den Anforderungen der vorliegenden Norm haben.
ANMERKUNG 2 Diese Norm gilt auch für verflüssigte Gase einschließlich Flüssiggas (LPG); für eine dezidierte LPG-Norm siehe jedoch EN 12493.
Sofern nicht anders festgelegt, gelten die Festlegungen, die die gesamte Breite der Seite einnehmen, für alle Arten von Tanks. Festlegungen in einzelnen Spalten gelten ausschließlich für:
Drucktanks für die Beförderung gefährlicher Güter auf der Straße oder mit der Eisenbahn nach RID/ADR, Kapitel 6.8 (linke Spalte) ortsbewegliche Tanks nach RID/ADR, Kapitel 6.7 (rechte Spalte)
Citernes destinées au transport de matières dangereuses - Citernes métalliques sous pression - Conception et fabrication
La présente Norme européenne spécifie les prescriptions minimales pour la conception et la construction des citernes métalliques sous pression ayant une pression maximale de service ou une pression d’épreuve supérieure à 50 kPa (0,5 bar) utilisées pour le transport de marchandises dangereuses par route, par chemin de fer et par mer. La présente norme inclut les prescriptions relatives aux ouvertures, fermetures et équipements de structure ; elle ne couvre pas les prescriptions relatives aux équipements de service. Pour les citernes destinées au transport de liquides cryogéniques, les EN 13530-1 et EN 13530-2 s’appliquent.
NOTE 1 La conception et la construction des citernes sous pression conformes au domaine d'application de la présente norme sont principalement soumises aux prescriptions des 6.8.2.1, 6.8.3.1 et 6.8.5 du RID/ADR, selon le cas. En outre, les prescriptions pertinentes en colonnes 12 et 13 du Tableau A du Chapitre 3.2, en 4.3 et en 6.8.2.4 du RID/ADR s’appliquent. Pour les équipements de structure, les paragraphes 6.8.2.2 et 6.8.3.2 s'appliquent, selon le cas. Les définitions du 1.2.1 du RID/ADR s’appliquent. Pour les citernes mobiles, voir également le Chapitre 4.2 et les paragraphes 6.7.2 et 6.7.3 du RID et de l’ADR. De plus, les prescriptions pertinentes en colonnes 10 et 11 du Tableau A du Chapitre 3.2, en 4.2, en 6.7.2 et en 6.7.3 du RID/ADR s’appliquent. Les numéros de paragraphe donnés ci-dessus se rapportent aux versions 2013 du RID/ADR, qui font régulièrement l'objet de révisions. Cela peut entraîner des non conformités temporaires à l'EN 14025. Il est important de savoir que les exigences du RID/ADR prennent le pas sur tout article de la présente norme.
NOTE 2 La présente norme s’applique aux gaz liquéfiés, dont le GPL. Pour une norme dédiée au GPL, se reporter toutefois à l’EN 12493.
Sauf indication contraire, les dispositions qui occupent toute la largeur de la page s’appliquent à tous les types de citernes. Les dispositions qui n’occupent qu’une colonne s’appliquent uniquement aux :
Cisterne za prevoz nevarnega blaga - Kovinske tlačne posode - Konstruiranje in izdelava (vključno z dopolnilom A1)
Ta evropski standard določa minimalne zahteve za konstruiranje in izdelavo kovinskih tlačnih posod z najvišjim delovnim ali preskusnim tlakom nad 50 kPa (0,5 bara) za prevoz nevarnega blaga po cesti, železnici in morju. Ta evropski standard zajema zahteve za odprtine, zaključke in strukturno opremo; ne vključuje zahtev za obratovalno opremo. Za posode za prevoz kriogenih tekočin se uporabljata standarda EN 13530-1 in EN 13530-2. OPOMBA 1: Za zasnovo in obliko tlačnih posod v skladu z obsegom tega evropskega standarda se prvotno uporabljajo zahteve določb RID/ADR, poglavja 6.8.2.1, 6.8.3.1 in 6.8.5. Poleg tega se uporabljajo ustrezne zahteve določb RID/ADR, stolpca 12 in 13 preglednice A za poglavja 3.2, 4.3 in 6.8.2.4. Za strukturno opremo se uporabljata podrazdelka 6.8.2.2 in 6.8.3.2. Navedene so definicije določbe RID/ADR 1.2.1. Za prenosne posode glej tudi poglavje 4.2, razdelka 6.7.2 in 6.7.3 določb RID in ADR. Poleg tega se uporabljajo ustrezne zahteve določb RID/ADR, stolpca 10 in 11 preglednice A za poglavja 3.2, 4.2, 6.7.2 in 6.7.3. Zgornje številke odstavkov veljajo za izdajo RID/ADR iz leta 2013 in so predmet rednih revizij. To lahko povzroči začasno neskladnost s standardom EN 14025. Pomembno je vedeti, da imajo zahteve RID/ADR prednost pred katero koli določbo tega standarda. OPOMBA 2: Ta standard se uporablja za utekočinjene pline, vključno z utekočinjenim naftnim plinom (LPG), vendar za namenski standard, ki se uporablja za utekočinjeni naftni plin glej EN 12493. Če ni navedeno drugače, se določbe, ki zavzamejo celotno širino strani, uporabljajo za vse vrste posod. Določbe v enem stolpcu se uporabljajo samo za: cestne in železniške tlačne posode v skladu s poglavjem RID/ADR 6.8 (stolpec na levi strani); prenosne posode v skladu s poglavjem RID/ADR 6.7 (stolpec na desni strani).
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
SIST EN 14025:2013+A1:2016
01-november-2016
1DGRPHãþD
SIST EN 14025:2013
&LVWHUQH]DSUHYR]QHYDUQHJDEODJD.RYLQVNHWODþQHSRVRGH.RQVWUXLUDQMHLQ
L]GHODYD YNOMXþQR]GRSROQLORP$
Tanks for the transport of dangerous goods - Metallic pressure tanks - Design and
construction
Tanks für die Beförderung gefährlicher Güter - Metallische Drucktanks - Auslegung und
Bau
Citernes destinées au transport de matières dangereuses - Citernes métalliques sous
pression - Conception et fabrication
Ta slovenski standard je istoveten z: EN 14025:2013+A1:2016
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 14025:2013+A1:2016 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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SIST EN 14025:2013+A1:2016
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SIST EN 14025:2013+A1:2016
EN 14025:2013+A1
EUROPEAN STANDARD
NORME EUROPÉENNE
June 2016
EUROPÄISCHE NORM
ICS 13.300; 23.020.20 Supersedes EN 14025:2013
English Version
Tanks for the transport of dangerous goods - Metallic
pressure tanks - Design and construction
Citernes destinées au transport de matières Tanks für die Beförderung gefährlicher Güter -
dangereuses - Citernes métalliques sous pression - Metallische Drucktanks - Auslegung und Bau
Conception et fabrication
This European Standard was approved by CEN on 31 August 2013 and includes Amendment 1 approved by CEN on 29 April
2016.
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, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,
Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, 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: Avenue Marnix 17, B-1000 Brussels
© 2016 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 14025:2013+A1:2016 E
worldwide for CEN national Members.
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SIST EN 14025:2013+A1:2016
EN 14025:2013+A1:2016 (E)
Contents Page
European foreword . 4
1 Scope . 5
2 Normative references . 5
3 Terms, definitions and symbols . 7
3.1 Terms and definitions . 7
3.2 Symbols . 7
4 Materials . 8
4.1 General . 8
4.2 Compatibility . 9
5 Design . 9
5.1 General . 9
5.2 Minimum shell thickness . 9
5.3 Reduction of shell thickness. 9
5.4 Protection of the shell . 10
5.5 Protection of equipment . 10
5.6 Other design requirements . 11
6 Calculation . 11
6.1 General . 11
6.1.1 General . 11
6.1.2 Calculation scheme for the wall thickness of metallic pressure tanks of RID/ADR
Chapter 6.8. 11
6.1.3 Calculation scheme for the wall thickness of metallic portable pressure tanks of
RID/ADR chapter 6.7 . 12
6.2 Design criteria . 13
6.3 Calculation for internal pressure . 15
6.3.1 General . 15
6.3.2 Wall thickness of the cylindrical section . 15
6.3.3 Wall thickness of ends . 15
6.3.4 Wall thickness of conical sections . 19
6.3.5 Openings and reinforcements . 21
6.3.6 Manhole covers . 28
6.3.7 Flanges, joints, bolts . 33
6.4 Calculation for external pressure. 34
6.4.1 General . 34
6.4.2 Tanks, where external over pressure is part of operating conditions . 35
6.4.3 Tanks, where external over pressure is not part of operating conditions . 35
6.4.4 Test . 35
6.5 Tank to frame connection/interface . 35
7 Construction and manufacturing . 36
7.1 General requirements . 36
7.2 Cutting . 36
7.3 Forming . 37
7.3.1 General . 37
2
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SIST EN 14025:2013+A1:2016
EN 14025:2013+A1:2016 (E)
7.3.2 Cold forming . 37
7.3.3 Hot forming . 37
7.3.4 Ends . 37
7.3.5 Heat treatment and normalising . 37
7.4 Welding . 38
7.4.1 Qualification . 38
7.4.2 Welded joints . 38
7.4.3 Examination and testing of welds . 38
7.4.4 Temporary attachments . 40
7.5 Manufacturing tolerances . 40
7.5.1 Plate alignment . 40
7.5.2 Defects of form . 41
7.5.3 Thickness . 41
7.5.4 Dished ends . 41
7.5.5 Cylindrical sections . 41
8 Repairs . 42
8.1 General . 42
8.2 Repair of surface defects in the parent metal . 42
8.3 Repair of weld defects . 42
Annex A (informative) Sample calculation for tank containers according to RID/ADR
Chapter 6.8" . 43
A.1 Introduction . 43
A.2 Dimensions, characteristics of materials, operating and testing conditions . 43
A.3 Calculation according to branch A . 44
A.4 Calculation according to branch B . 44
A.5 Calculation according to branch C . 45
A.6 Calculation according to branch D . 47
A.7 Results . 54
Annex B (informative) Explosion pressure shock resistant design of tanks . 56
Bibliography . 58
3
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SIST EN 14025:2013+A1:2016
EN 14025:2013+A1:2016 (E)
European foreword
This document (EN 14025:2013+A1:2016) 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 December 2016, and conflicting national standards
shall be withdrawn at the latest by December 2016.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent
rights.
This document includes Amendment 1 approved by CEN on 29 April 2016.
This document supersedes !EN 14025:2013".
The start and finish of text introduced or altered by amendment is indicated in the text by tags !".
!deleted text"
This document is submitted for reference into the RID [9] and/or in the technical annexes of the ADR
[10].
NOTE The technical annexes are available at the following website:
http://www.unece.org./trans/danger/danger.htm for ADR and for RID at http://www.otif.org/en/dangerous-
goods.htm respectively.
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, Former Yugoslav Republic of Macedonia,
France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta,
Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Turkey and the United Kingdom.
4
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SIST EN 14025:2013+A1:2016
EN 14025:2013+A1:2016 (E)
1 Scope
This European Standard specifies the minimum requirements for the design and construction of
metallic pressure tanks having a maximum working or test pressure exceeding 50 kPa (0,5 bar), for the
transport of dangerous goods by road and rail and sea. This European Standard includes requirements
for openings, closures and structural equipment; it does not cover requirements of service equipment.
For tanks for the transport of cryogenic liquids, EN 13530-1 and EN 13530-2 apply.
NOTE 1 Design and construction of pressure tanks according to the scope of this European Standard are
primarily subject to the requirements of RID/ADR, 6.8.2.1, 6.8.3.1 and 6.8.5, as relevant. In addition, the relevant
requirements of RID/ADR, columns 12 and 13 of Table A to chapter 3.2, 4.3 and 6.8.2.4 apply. For the structural
equipment subsections 6.8.2.2 and 6.8.3.2 apply, as relevant. The definitions of RID/ADR 1.2.1 are referred to. For
portable tanks see also Chapter 4.2 and Sections 6.7.2 and 6.7.3 of RID and ADR. In addition, the relevant
requirements of RID/ADR, columns 10 and 11 of Table A to Chapter 3.2, 4.2, 6.7.2 and 6.7.3 apply. The paragraph
numbers above relate to the 2013 issue of RID/ADR which are subject to regular revisions. This can lead to
temporary non-compliances with EN 14025. It is important to know that requirements of RID/ADR take
precedence over any clause of this standard.
NOTE 2 This standard is applicable to liquefied gases including LPG, however for a dedicated LPG standard see
EN 12493.
If not otherwise specified, provisions which take up the whole width of the page apply to all kind of
tanks. Provisions contained in a single column apply only to:
road and rail pressure tanks according to portable tanks according to RID/ADR chapter 6.7
RID/ADR chapter 6.8 (left-hand column); (right-hand column).
2 Normative references
The following documents, in whole or in part, are normatively referenced in this document and are
indispensable for its application. For dated references, only the edition cited applies. For undated
references, the latest edition of the referenced document (including any amendments) applies.
EN 287-1, Qualification test of welders — Fusion welding — Part 1: Steels
EN 1418, Welding personnel — Approval testing of welding operators for fusion welding and resistance
weld setters for fully mechanized and automatic welding of metallic materials
EN 1435, Non-destructive examination of welds — Radiographic examination of welded joints
EN 1591-1, Flanges and their joints — Design rules for gasketed circular flange connections — Part 1:
Calculation method
EN 10204, Metallic products - Types of inspection documents
EN 13094:2008, Tanks for the transport of dangerous goods — Metallic tanks with a working pressure
not exceeding 0,5 bar — Design and construction
EN 13445-2, Unfired pressure vessels - Part 2: Materials
EN 13445-3:2009, Unfired pressure vessels — Part 3: Design
EN 13445-4, Unfired pressure vessels - Part 4: Fabrication
5
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SIST EN 14025:2013+A1:2016
EN 14025:2013+A1:2016 (E)
EN 13445-8, Unfired pressure vessels - Part 8: Additional requirements for pressure vessels of aluminium
and aluminium alloys
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 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 5817, Welding — Fusion-welded joints in steel, nickel, titanium and their alloys (beam welding
excluded) — Quality levels for imperfections (ISO 5817)
EN ISO 9606-2, Qualification test of welders — Fusion welding — Part 2: Aluminium and aluminium alloys
(ISO 9606-2)
EN ISO 9712, Non destructive testing — Qualification and certification of NDT personnel (ISO 9712)
EN ISO 10042, Welding — Arc-welded joints in aluminium and its alloys — Quality levels for imperfections
(ISO 10042)
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 15609-3, Specification and qualification of welding procedures for metallic materials — Welding
procedures specification — Part 3: Electron beam welding (ISO 15609-3)
EN ISO 15609-4, Specification and qualification of welding procedures for metallic materials — Welding
procedure specification — Part 4: Laser beam welding (ISO 15609-4)
EN ISO 15613, Specification and qualification of welding procedures for metallic materials —
Qualification based on pre-production welding test (ISO 15613)
EN ISO 15614-1, Specification and qualification of welding procedures for metallic materials — Welding
procedure test — Part 1: Arc and gas welding of steels and arc welding of nickel and nickel alloys
(ISO 15614-1)
EN ISO 15614-2, Specification and qualification of welding procedures for metallic materials — Welding
procedure test — Part 2: Arc welding of aluminium and its alloys (ISO 15614-2)
EN ISO 17635, Non-destructive testing of welds — General rules for metallic materials (ISO 17635)
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)
6
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SIST EN 14025:2013+A1:2016
EN 14025:2013+A1:2016 (E)
ISO 1496-3, Series 1 freight containers — Specification and testing — Part 3: Tank containers for liquids,
gases and pressurized dry bulk
ISO 7005-1, Pipe flanges — Part 1: Steel flanges for industrial and general service piping systems
3 Terms, definitions and symbols
3.1 Terms and definitions
For the purposes of this document, the following term and definition applies.
3.1.1
pressure-tank
tank as defined in the international regulations for the transport of dangerous goods by road or rail
having a maximum working pressure or a test pressure exceeding 50 kPa (0,5 bar)
3.2 Symbols
The following general symbols are used throughout the text. They are listed in alphabetical order and
special symbols are explained with the relevant formulae. Additional symbols used in the text are
explained in:
RID/ADR Chapter 6.8 RID/ADR Chapter 6.7
A minimum elongation at fracture of the metal chosen under tensile stress in %
1
d inside diameter of an opening
i
D internal diameter of shell in mm
D mean diameter of the cylindrical part of the tank at the junction of a cone
C
D outside diameter of the cylindrical part of the tank or the straight flange of the dished end
e
D inside diameter of the cylindrical part of D diameter of the shell (in m), but not less than
i i
the tank or the straight flange of dished 1,80 m
end
e minimum required wall thickness (in mm) of the shell
e minimum shell thickness for mild steel in mm, according to 6.8.2.1.18 and 6.8.2.19 of RID/ADR
0
e minimum shell thickness for the metal chosen in mm
1
e wall thickness of a conical part of a shell
k
e wall thickness of a hemispherical end
R
E Young's modulus
f nominal design stress (allowable stress)
d
h inside height of an ellipsoidal dished end
K shape factor of ellipsoidal ends
MWP maximum working pressure, in MPa MAWP maximum allowable working pressure, in
MPa
p design pressure, in MPa P design pressure, in MPa
p
dyn equivalent dynamic pressure
7
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SIST EN 14025:2013+A1:2016
EN 14025:2013+A1:2016 (E)
p test pressure, in MPa
test
p vapour pressure at 50 °C or at the design P vapour pressure of the substance at 65 °C
vap vap1
temperature, whichever is the higher; to be (according to 6.7.2.1 of RID/ADR)
taken as the numerical value of the
P vapour pressure of the non-refrigerated
vap2
absolute pressure
liquefied gas depends on the portable
tank type (according to 6.7.3.1 of
RID/ADR)
Pc calculation pressure in MPa as specified in
6.8.2.1.14 of RID/ADR
P test pressure in MPA
T
r inner knuckle radius, in mm
R inside spherical radius of the central part of a torispherical end
R guaranteed (upper) minimum yield strength or guaranteed minimum 0,2 % proof strength, in
e
N/mm² (for austenitic steel the 1 % proof strength may be chosen)
R guaranteed (upper) minimum yield strength or guaranteed minimum 0,2 % proof strength, at the
e,t
relevant design temperature, in N/mm² (for austenitic steel the 1 % proof strength at the relevant
design temperature may be chosen)
Rm guaranteed minimum tensile strength, in N/mm²
2
R minimum tensile strength of the metal chosen in N/mm
m1
R guaranteed minimum tensile strength at the relevant design temperature, in N/mm²
m,t
2
σ permissible stress in N/mm , as defined in 6.8.2.1.16 of RID/ADR
S safety factor
λ welding coefficient
4 Materials
4.1 General
The tank shell shall be fabricated from metallic materials which shall be resistant to brittle fracture and
of adequate impact strength within the design temperature range. The material shall be suitable for
forming.
EN 13445-2 and -8 apply and the minimum material requirements given in RID/ADR Chapter 6.8 and
Chapter 6.7 shall be fulfilled.
RID/ADR Chapter 6.8 RID/ADR Chapter 6.7
Aluminium may only be used for the shells of
portable tanks when indicated in a portable tank
special provision assigned to a specific substance
in Column (11) of Table A of Chapter 3.2 RID/ADR
or when approved by the competent authority.
NOTE 1 For aluminium and aluminium alloys, see also EN 14286.
NOTE 2 RID/ADR restrict the use of materials with respect to the maximum yield and tensile strength of fine-
grained steel for welded shells, maximum ratios of yield/tensile strength for welded steel shells and of the
minimum elongation at fracture for welded fine- grained other steel and aluminium shells.
8
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SIST EN 14025:2013+A1:2016
EN 14025:2013+A1:2016 (E)
Welded shells shall be fabricated from a material which has been shown to have acceptable welding
characteristics.
4.2 Compatibility
Shells, fittings, and pipework shall be constructed from materials which are:
a) substantially immune to attack by the substance(s) intended to be transported; or
b) properly passivated or neutralised by chemical reaction; or
c) lined with corrosion-resistant material directly bonded to the shell or attached by equivalent
means.
They shall comply with
RID/ADR 6.8.2 RID/ADR 6.7.2.2 and 6.7.3.2
Gaskets shall be made of materials not subject to attack by the substances intended to be transported.
The materials of the tank, including any devices, gaskets, linings and accessories, shall not adversely
affect the substances intended to be transported in the tank.
Guidelines on material specifications in relation to the substances to be transported may be taken from
Annex B of EN 12285-1:2003.
5 Design
5.1 General
Tanks shall be designed to withstand without loss of contents the:
1) operating conditions including static and dynamic forces in normal conditions of carriage. In
addition, the design of portable tanks shall account for the effects of fatigue, caused by repeated
application of these loads through the expected life of the portable tank;
2) test conditions;
3) !explosion-pressure-shock resistant condition (if required) (see Annex B)";
under consideration of Clause 6.
If sudden temperature differences are to be expected during filling or discharge of the tank the buckling
effect of one sided expansion or contraction should be taken into account.
5.2 Minimum shell thickness
The shell thickness shall not be less than that given in:
RID/ADR 6.8.2.1.17 to 6.8.2.1.18, see Figure 1 of RID/ADR 6.7.2.4 or 6.7.3.4, see Figure 2 of this
this standard standard
5.3 Reduction of shell thickness
The reduction of the minimum shell thickness When additional protection against shell damage
(see Figure 1) is allowed if protection of the shell is provided as described in 5.4, portable tanks
against damage through lateral impact or with test pressure less than 2,65 bar may have the
overturning is provided (see 5.4 and RID/ADR minimum shell thickness reduced, in proportion to
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SIST EN 14025:2013+A1:2016
EN 14025:2013+A1:2016 (E)
6.8.2.1.19 to 6.8.2.1.20 and 6.8.2.1.21 respectively) the protection provided (see RID/ADR 6.7.2.4.3 to
but the minimum requirements given in RID/ADR 6.7.2.4.5).
6.8.2.1.17 sha
...
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