SIST EN ISO 13769:2018
(Main)Gas cylinders - Stamp marking (ISO 13769:2018)
Gas cylinders - Stamp marking (ISO 13769:2018)
This document specifies stamp marking of transportable gas cylinders of volumes greater than 0,12 l
and up to or equal to 150 l and tubes of volumes up to or equal to 3 000 l, including:
— steel and aluminium-alloy gas cylinders;
— composite gas cylinders;
— acetylene cylinders;
— liquefied petroleum gas (LPG) cylinders (see Annex A); and
— small cylinders (see Annex B).
Unless noted by exception, the use of “cylinder” in this document refers to the above types of cylinders.
Non-refillable cylinders are addressed by this standard.
Gasflaschen - Stempelung (ISO 13769:2018)
Diese Internationale Norm legt die Stempelung von ortsbeweglichen Gasflaschen und Großflaschen mit einem Fassungsraum von mehr als 0,120 l bis zu 3 000 l fest, einschließlich:
Gasflaschen aus Stahl und Aluminiumlegierungen;
Gasflaschen aus Verbundwerkstoffen;
Acetylenflaschen;
Flüssiggasflaschen (LPG) (siehe Anhang A); und
kleine Flaschen (siehe Anhang B).
Diese werden im Folgenden „Flaschen“ genannt.
Bouteilles à gaz - Marquage (ISO 13769:2018)
Le présent document spécifie le marquage des bouteilles à gaz transportables d'un volume supérieur à 0,12 l et inférieur ou égal à 150 l et des tubes transportables d'un volume inférieur ou égal à 3 000 l, y compris:
- les bouteilles à gaz en acier et en alliages d'aluminium;
- les bouteilles à gaz composites;
- les bouteilles d'acétylène;
- les bouteilles de gaz de pétrole liquéfié (GPL) (voir Annexe A);
- les petites bouteilles (voir Annexe B).
Sauf exception, l'utilisation du terme «bouteille» dans le présent document fait référence aux types susmentionnés de bouteilles.
La présente norme couvre les bouteilles non rechargeables.
Plinske jeklenke - Označevanje z žigom (ISO 13769:2018)
Ta dokument določa označevanje prenosnih plinskih jeklenk s prostornino več kot 0,12 l
in največ 150 l ter jeklenk s prostornino največ 3000 l z žigom; zajema naslednje tipe jeklenk:
– plinske jeklenke iz jekla in aluminijeve zlitine;
– plinske jeklenke iz kompozitnih materialov;
– acetilenske jeklenke;
– jeklenke za utekočinjeni naftni plin (LPG) (glej dodatek A); in
– majhne jeklenke (glej dodatek B).
Če ni navedeno drugače, se uporaba izraza »jeklenka« v tem dokumentu nanaša na zgornje tipe jeklenk.
Ta standard obravnava jeklenke za enkratno uporabo.
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
SIST EN ISO 13769:2018
01-november-2018
1DGRPHãþD
SIST EN ISO 13769:2010
3OLQVNHMHNOHQNH2]QDþHYDQMH]åLJRP ,62
Gas cylinders - Stamp marking (ISO 13769:2018)
Gasflaschen - Stempelung (ISO 13769:2018)
Bouteilles à gaz - Marquage (ISO 13769:2018)
Ta slovenski standard je istoveten z: EN ISO 13769:2018
ICS:
23.020.35 Plinske jeklenke Gas cylinders
SIST EN ISO 13769:2018 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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SIST EN ISO 13769:2018
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SIST EN ISO 13769:2018
EN ISO 13769
EUROPEAN STANDARD
NORME EUROPÉENNE
August 2018
EUROPÄISCHE NORM
ICS 23.020.35 Supersedes EN ISO 13769:2009
English Version
Gas cylinders - Stamp marking (ISO 13769:2018)
Bouteilles à gaz - Marquage (ISO 13769:2018) Gasflaschen - Stempelung (ISO 13769:2018)
This European Standard was approved by CEN on 23 May 2018.
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, 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
© 2018 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 13769:2018 E
worldwide for CEN national Members.
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SIST EN ISO 13769:2018
EN ISO 13769:2018 (E)
Contents Page
European foreword . 3
2
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SIST EN ISO 13769:2018
EN ISO 13769:2018 (E)
European foreword
This document (EN ISO 13769:2018) has been prepared by Technical Committee ISO/TC 58 "Gas
cylinders" in collaboration with Technical Committee CEN/TC 23 “Transportable gas cylinders”, the
secretariat of which is held by BSI.
This European Standard shall be given the status of a national standard, either by publication of an
identical text or by endorsement, at the latest by February 2019, and conflicting national standards
shall be withdrawn at the latest by February 2019.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN shall not be held responsible for identifying any or all such patent rights.
This document supersedes EN ISO 13769:2009.
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, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Turkey and the United Kingdom.
Endorsement notice
The text of ISO 13769:2018 has been approved by CEN as EN ISO 13769:2018 without any modification.
3
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SIST EN ISO 13769:2018
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SIST EN ISO 13769:2018
INTERNATIONAL ISO
STANDARD 13769
Third edition
2018-07
Gas cylinders — Stamp marking
Bouteilles à gaz — Marquage
Reference number
ISO 13769:2018(E)
©
ISO 2018
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SIST EN ISO 13769:2018
ISO 13769:2018(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2018
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting
on the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address
below or ISO’s member body in the country of the requester.
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Phone: +41 22 749 01 11
Fax: +41 22 749 09 47
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland
ii © ISO 2018 – All rights reserved
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SIST EN ISO 13769:2018
ISO 13769:2018(E)
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Application of stamp markings . 2
4.1 General . 2
4.2 Workmanship . 2
4.3 Arrangement and position of stamp markings . 3
Annex A (informative) Examples of permanent marking positions for metallic LPG cylinders .10
Annex B (normative) Specific provisions for and examples of permanent markings of small
cylinders .11
Annex C (normative) Locations of stamp markings .15
Bibliography .19
© ISO 2018 – All rights reserved iii
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SIST EN ISO 13769:2018
ISO 13769:2018(E)
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards
bodies (ISO member bodies). The work of preparing International Standards is normally carried out
through ISO technical committees. Each member body interested in a subject for which a technical
committee has been established has the right to be represented on that committee. International
organizations, governmental and non-governmental, in liaison with ISO, also take part in the work.
ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of
electrotechnical standardization.
The procedures used to develop this document and those intended for its further maintenance are
described in the ISO/IEC Directives, Part 1. In particular the different approval criteria needed for the
different types of ISO documents should be noted. This document was drafted in accordance with the
editorial rules of the ISO/IEC Directives, Part 2 (see www .iso .org/directives).
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of
any patent rights identified during the development of the document will be in the Introduction and/or
on the ISO list of patent declarations received (see www .iso .org/patents).
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation on the voluntary nature of standards, the meaning of ISO specific terms and
expressions related to conformity assessment, as well as information about ISO's adherence to the
World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT) see the following
URL: www .iso .org/iso/foreword .html.
This document was prepared by Technical Committee ISO/TC 58, Gas cylinders, Subcommittee SC 4,
Operational requirements for gas cylinders.
Any feedback or questions on this document should be directed to the user’s national standards body. A
complete listing of these bodies can be found at www .iso .org/members .html.
This third edition cancels and replaces the second edition (ISO 13769:2007), which has been technically
revised. The main changes compared to the previous edition are as follows:
— inclusion of markings for non-refillable gas cylinders;
— inclusion of markings for gas cylinders less than 0,5 l water capacity;
— inclusion of marking examples for small non-refillable and refillable gas cylinders.
iv © ISO 2018 – All rights reserved
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SIST EN ISO 13769:2018
ISO 13769:2018(E)
Introduction
This document has been written so that it is suitable to be referenced in the UN Recommendations for
the Transport of Dangerous Goods — Model Regulations.
This document is intended to be applied at the time of cylinder manufacture. However, it may be applied
by the cylinder user during use operations, e.g. the stamping of “empty weight” (item 10 in Figures C.1,
C.2 and C.3) on cylinders not so marked at the time of manufacture. It is also intended to be applied at
the time of periodic inspection.
Some stamp markings include the year and month. The order of these time elements is given with the
most significant digits (the year) to the left, in accordance with the rules given in ISO 8601.
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SIST EN ISO 13769:2018
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SIST EN ISO 13769:2018
INTERNATIONAL STANDARD ISO 13769:2018(E)
Gas cylinders — Stamp marking
1 Scope
This document specifies stamp marking of transportable gas cylinders of volumes greater than 0,12 l
and up to or equal to 150 l and tubes of volumes up to or equal to 3 000 l, including:
— steel and aluminium-alloy gas cylinders;
— composite gas cylinders;
— acetylene cylinders;
— liquefied petroleum gas (LPG) cylinders (see Annex A); and
— small cylinders (see Annex B).
Unless noted by exception, the use of “cylinder” in this document refers to the above types of cylinders.
Non-refillable cylinders are addressed by this standard.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any amendments) applies.
ISO 10286, Gas cylinders — Terminology
ISO 11114-1, Gas cylinders — Compatibility of cylinder and valve materials with gas contents — Part 1:
Metallic materials
UN Recommendations for the Transport of Dangerous Goods — Model Regulations (as amended)
3 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO 10286 and the following apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https: //www .iso .org/obp
— IEC Electropedia: available at http: //www .electropedia .org/
3.1
stamp marking
marking on a cylinder, either permanent (3.2) or durable (3.3)
3.2
permanent marking
marking applied to cylinders by hard metal stamping, engraving, casting or other method such as
labelling for composite cylinders and small cylinders
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SIST EN ISO 13769:2018
ISO 13769:2018(E)
3.3
durable marking
marking such as stencilling, labelling or other suitable methods
Note 1 to entry: Stencilling is the marking of a cylinder using inks and/or paints.
Note 2 to entry: Suitable methods include placing a tag/ring under the cylinder valve.
3.4
small cylinder
cylinder on which, due to its geometry, the arrangement and position of the markings cannot be
executed as described in Annex C
4 Application of stamp markings
4.1 General
The stamp markings listed in Table 1 consist of manufacturing, operational and certification stamp
marks. See 4.3 for the arrangement and position of stamp markings.
Additional markings may be applied as agreed upon by interested parties, provided the layout does
not cause confusion regarding their interpretation and the clarity of other mandatory markings is not
affected.
Annex B specifies the marking provisions for small cylinders.
4.2 Workmanship
The stamp markings listed in Table 1 shall be applied legibly so that the integrity of the cylinder is
unaffected, e.g. either on a reinforced part of the cylinder or on a permanent attachment. Hard metal
stampings shall not be applied to the cylindrical part of the cylinder (unless applied by the manufacturer
as part of the manufacturing process).
For refillable metal and composite cylinders, the stamp markings shall be applied permanently. Certain
information (see Table 1) may be applied durably to the cylinder (e.g. by stencilling, labelling, using a ring).
For cylinders with a diameter less than 51 mm, the stamp marking may also be applied either
permanently or durably with a fixed label or other suitable method on the cylindrical part. However,
a hard metal stamping procedure shall not be used if it results in an unacceptable cycle and burst
performance.
The depth (when applicable) of the characters in the stamp marking applied by any method shall be
such that they are legible and durable under all operating conditions.
The stamp marking tools used (when applicable) shall have such radii as are necessary to prevent
the formation of sharp notches. The radius of the stamp marking tool should not be less than 0,2 mm.
Different values may be used, but it shall be demonstrated by fatigue and burst tests in accordance with
the design standard or equivalent that a failure does not initiate in the markings.
For welded cylinders, some stamp markings appear on a welded identity plate or on another part
permanently attached to the cylinder and thus are not subject to gas pressure.
For composite cylinders, permanent markings can be achieved by use of a printed label encapsulated
either by placing it under the resin or by covering it with a permanent transparent coating on the
shoulder or the side wall of the cylinder (see 4.3).
Except for the “UN” mark, the characters in the stamp markings shall be at least 5 mm in height.
This height may be reduced on cylinders with an outside diameter less than 140 mm except for small
cylinders, whose requirements are shown in B.1.1. In no case shall the characters be less than 2,5 mm
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SIST EN ISO 13769:2018
ISO 13769:2018(E)
in height. The minimum size of the “UN” mark shall be 10 mm for cylinders with diameters greater than
or equal to 140 mm and 5 mm for cylinders with diameters less than 140 mm.
4.3 Arrangement and position of stamp markings
All stamp markings described in Table 1 shall appear consecutively in the sequence shown in the
figures in Annex C, which indicate the arrangement of the stamp markings. The UN Model Regulations
distinguishes between three different groups of stamp marks, gives them an explicit place in their
arrangement and requires certain markings to appear in a specified sequence.
In Figures C.1 and C.2, the top group of stamp marks includes manufacturing marks (12, 2, 3, 4, 6). The
group of stamp marks in the middle includes operational marks (13, 10, 11, 17, 7). The bottom group of
stamp marks includes certification marks (27, 1, 28, 8, 9).
In Figure C.3, the top row includes manufacturing marks. The second and third rows include operational
marks and the bottom row includes certification stamp marks.
Annex A includes examples of positions of stamp markings for metallic LPG cylinders.
Annex B includes provisions and examples of stamp markings for small cylinders when the arrangement
and position of the markings cannot be executed (due to limited space) as specified in Annex C.
When an identity plate or label (e.g. for composite cylinders) is used, all stamp markings may be on a
single plate or label, provided the layout does not cause confusion regarding their interpretation and
follows the requirements of Table 1.
For hoop-wrapped composite cylinders that are stamp marked using a label under the resin, at a
minimum the manufacturer’s identification and the manufacturing serial number shall be duplicated
by stamping them on the shoulder in accordance with Annex C for traceability purposes.
Table 1 — Stamp markings
Status Figures as shown in Annex C (with examples)
Mandatory
Figure C.1
a
(M)
Figure C.2
Stamp
Location Figure C.3
Location of
marking Description of the marking
Normative of stamp Location of
stamp mark-
number
b
marking for stamp marking
(N)
ing for lique-
compressed for acetylene
fied gases
Optional
gases
(O)
Standard: The identification of the relevant construc- M ISOXXX ISOXXX ISOXXX
1 tion standard to which the cylinder is designed, manu-
factured and tested.
Country of manufacture: Capital letter(s) identifying M when dif- CH CH CH
the country of manufacture of the cylinder shell using ferent from
the characters of the distinguishing signs of motor vehi- country of
2 cles in international traffic as specified in the UN Model approval
Regulations. (stamp
marking No.
28)
Manufacturer’s identification: Name and/or trade- M MF MF MF
3
mark of cylinder manufacturer.
a
Mandatory in accordance with the UN Model Regulations.
b
Not mandatory according to the UN Model Regulations but normative for this document.
c
In the UN Model Regulations, “date of the initial inspection” is used.
d
In International Standards, “weight” is equivalent to a force, expressed in newtons. However, in common parlance (as used in terms defined in this
document), “weight” continues to be used to mean “mass,” although this practice is deprecated (see ISO 80000-4).
e
The Aluminium Association Inc., 1400 Crystal Drive, Suite 430, Arlington, VA 22202, USA; www .aluminum .org
f
The stamped value can be less than the approved value.
g
The reference in UN Model Regulations is to mark No. 8 (not to mark No. 27).
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SIST EN ISO 13769:2018
ISO 13769:2018(E)
Table 1 (continued)
Status Figures as shown in Annex C (with examples)
Mandatory
Figure C.1
a
(M)
Figure C.2
Stamp
Location Figure C.3
Location of
marking Description of the marking
Normative of stamp Location of
stamp mark-
number
b
(N) marking for stamp marking
ing for lique-
compressed for acetylene
fied gases
Optional
gases
(O)
Manufacturing serial number: Alphanumeric identifi- M 7654321 7654322 7654323
cation number given or assigned by the manufacturer to
clearly identify the cylinder.
4
In the case of cylinders less than or equal to 1 l, the man-
ufacturing batch number may replace the manufacturing
serial number.
Stamp for non-destructive examination (NDE): When N if appli- UT MT PT
the cylinder is tested by and meets all the requirements cable
of NDE in accordance with an ISO standard for gas cyl-
inders (e.g. ultrasonic, magnetic particle, dye penetrant,
acoustic emission), the following symbols shall be used:
5
UT: for ultrasonic
MT: for magnetic particle
PT: for dye penetrant
AT: for acoustic emission
Identification of steel compatibility: Steel cylinders M if appli- H H —
and composite cylinders with steel liners compatible cable
with hydrogen and other gases of group 2 and group 11
in ISO 11114-1 shall be stamp marked with the letter
“H”. Stainless steel cylinders manufactured from high-
grade stainless steel and composite cylinders with
6
high-grade stainless-steel liners shall be stamped with
the letters “HG”.
EXAMPLE:
X2CrNiMo17–12–2, as found in ISO 15510.
Test pressure: The prefix “PH” followed by the value of M PH300BAR PH250BAR PH60BAR or
7
the test pressure in bars and the letters “BAR”. PH52BAR
Inspection stamp: Identity mark or stamp of the au- M # # #
8
thorized inspection body.
c
Initial test date : Year (four digits) followed by month M 2007/10 2007/10 2007/10
9
(two digits) of initial test, separated by a slash (i.e. “/”).
a
Mandatory in accordance with the UN Model Regulations.
b
Not mandatory according to the UN Model Regulations but normative for this document.
c
In the UN Model Regulations, “date of the initial inspection” is used.
d
In International Standards, “weight” is equivalent to a force, expressed in newtons. However, in common parlance (as used in terms defined in this
document), “weight” continues to be used to mean “mass,” although this practice is deprecated (see ISO 80000-4).
e
The Aluminium Association Inc., 1400 Crystal Drive, Suite 430, Arlington, VA 22202, USA; www .aluminum .org
f
The stamped value can be less than the approved value.
g
The reference in UN Model Regulations is to mark No. 8 (not to mark No. 27).
4 © ISO 2018 – All rights reserved
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SIST EN ISO 13769:2018
ISO 13769:2018(E)
Table 1 (continued)
Status Figures as shown in Annex C (with examples)
Mandatory
Figure C.1
a
(M)
Figure C.2
Stamp
Location Figure C.3
Location of
marking Description of the marking
Normative of stamp Location of
stamp mark-
number
b
(N) marking for stamp marking
ing for lique-
compressed for acetylene
fied gases
Optional
gases
(O)
d
Empty weight : The weight of the cylinder in kilograms M for refilla- 62,1KG 43,3KG 45,3KG
(kg), including all integral parts (e.g. neckring, footring, ble cylinders
etc.) followed by the letters “KG”. This weight shall not
O for non-re-
include the weight of the valve, valve cap or valve guard,
fillable
any coating or any porous material for acetylene. The
cylinders
empty weight shall be expressed to three significant
figures rounded up to the last digit. For cylinders less
than 1 kg, the empty weight shall be expressed to two
significant figures rounded up to the last digit. For acet-
10
ylene cylinders, it shall be expressed to at least one digit
after the decimal sign.
EXAMPLE:
Weight 0,964 kg 1,064 kg 10,64 kg 106,41 kg
measured
To be ex- 0,97 kg 1,07 kg 10,7 kg 107 kg
pressed as
Water capacity: The minimum water capacity, in litres, M for lique- ≈50L 40,6L 50,8L
guaranteed by the cylinder manufacturer, followed by fied gases
the letter “L”. On request by the customer or owner of
N for acety-
the cylinder for compressed gases, this capacity may be
lene
expressed as the nominal average water capacity with a
tolerance of ±1,5 %. In such a case, the symbol “≈” shall
O for
be stamped in front of the value of the water capacity.
compressed
gases
In the case of liquefied gases, the water capacity in litres
11 is expressed to three significant figures rounded down
to the last digit. If the value of the minimum or nominal
water capacity is an integer, the digits after the decimal
sign may be neglected. The actual determined volume
may also be indicated on request by the customer or
owner in special cases.
For cylinders intended to contain acetylene, the stamped
water capacity shall be the actual determined volume,
rounded down to three significant figures.
Identification of cylinder thread: M for refilla- 25E 25E 25E
ble cylinders
e.g. 17E or 25E thread in accordance with ISO 11363-1.
12
O for non-re-
fillable
cylinders
Minimum guaranteed wall thickness: Minimum M 5,8MM 15,5MM 4,2MM
guaranteed wall thickness in millimetres (as per the
Exception:
type approval test) of the cylindrical shell, followed by
not man-
the letters “MM”.
datory for
composite
13 cylinders or
cylinders
≤ 1 l
O for non-re-
fillable
cylinders
a
Mandatory in accordance with the UN Model Regulations.
b
Not mandatory according to the UN Model Regulations but normative for this document.
c
In the UN Model Regulations, “date of the initial inspection” is used.
d
In International Standards, “weight” is equivalent to a force, expressed in newtons. However, in common parlance (as used in terms defined in this
document), “weight” continues to be used to mean “mass,” although this practice is deprecated (see ISO 80000-4).
e
The Aluminium Association Inc., 1400 Crystal Drive, Suite 430, Arlington, VA 22202, USA; www .aluminum .org
f
The stamped value can be less than the approved value.
g
The reference in UN Model Regulations is to mark No. 8 (not to mark No. 27).
© ISO 2018 – All rights reserved 5
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SIST EN ISO 13769:2018
ISO 13769:2018(E)
Table 1 (continued)
Status Figures as shown in Annex C (with examples)
Mandatory
Figure C.1
a
(M)
Figure C.2
Stamp
Location Figure C.3
Location of
marking Description of the marking
Normative of stamp Location of
stamp mark-
number
b
(N) marking for stamp marking
ing for lique-
compressed for acetylene
fied gases
Optional
gases
(O)
Identification of aluminium alloy: Number of the alu- N for alu- — AA7060 —
e
minium alloy according to The Aluminium Association , minium-al-
14
with prefix “AA” for all aluminium-alloy cylinders and loy cylinders
composite cylinders with aluminium liners.
Identity of porous material: For acetylene cylinders N for acety- — — ZZZ
prepared with porous material, name or trademark of lene
porous material. The country and factory of origin shall
15
be traceable through this mark. Stamp marking No. 15
need not be stamped at the time of testing of the empty
cylinder shell.
Identification of content: For acetylene cylinders, the O for acety- — — C2H2
16
formula “C2H2” may be stamp marked. lene
M for PW200 — PW18
Working pressure: Settled pressure, in bars, at a uni-
compressed
17 form temperature of 288 K (15 °C) for a full gas cylinder
gases and
preceded by the letters “PW”.
acetylene
Maximum permissible filling weight: The product of O for liq- — 30KG CO2 —
the water capacity of the cylinder and the filling density uefied and
of the gas. The maximum permissible filling weight shall compressed
be stamp marked on the cylinder, either permanently or gases filled
durably. by weight
If a ring under the valve is used, it shall only be possible
to detach the ring by removal of the valve from the
18
cylinder.
If the maximum permissible filling weight is marked, it
shall be followed by the letters “KG” and the name and/
or chemical formula or the UN number of the gas.
The maximum permissible filling weight does not apply
to acetylene.
Total weight (gross weight): For acetylene cylinders, N for acety- — — TOTAL85,1KG
the total weight, comprising either Tare A or Tare F (see lene
stamp marking No. 20) plus the maximum allowable
acetylene content, preceded by the letters “TOTAL” and
19
followed by the letters “KG”. When only Tare S is used,
the total weight may be replaced by the maximum acet-
f
ylene charge , excluding saturation gas, preceded by the
letters “MAX” and followed by the letters “KG”.
a
Mandatory in accordance with the UN Model Regulations.
b
Not mandatory according to the UN Model Regulations but normative for this document.
c
In the UN Model Regulations, “date of the initial inspection” is used.
d
In International Standards, “weight” is equivalent to a force, expressed in newtons. However, in common parlance (as used in terms defined in this
document), “weight” continues to be used to mean “mass,” although
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