SIST EN ISO 10961:2012
(Main)Gas cylinders - Cylinder bundles - Design, manufacture, testing and inspection (ISO 10961:2010)
Gas cylinders - Cylinder bundles - Design, manufacture, testing and inspection (ISO 10961:2010)
ISO 10961:2010 specifies the requirements for the design, construction, testing and initial inspection of a transportable cylinder bundle. It is applicable to cylinder bundles containing compressed gas, liquefied gas and mixtures thereof. It is also applicable to cylinder bundles for acetylene.
It does not apply to packages in which cylinders are manifolded together in a support frame which is designed to be fixed permanently to a road vehicle, to a railway wagon or to the ground as a customer storage vessel. It does not apply to cylinder bundles which are designed for use in extreme environmental or operational conditions when additional and extraordinary requirements are imposed to maintain safety standards, reliability and performance, e.g. offshore cylinder bundles.
Specific requirements for acetylene cylinder bundles containing acetylene in a solvent are included in an annex. ISO 10961 does not, however, cover acetylene cylinder bundles with solvent-free acetylene cylinders.
ISO 10961 is intended primarily for industrial gases other than liquefied petroleum gases (LPGs), but it may also be used for LPGs.
Gasflaschen - Flaschenbündel - Auslegung, Herstellung, Prüfung und Inspektion (ISO 10961:2010)
Diese Internationale Norm legt die Anforderungen an Auslegung, Bau, Prüfung und erstmalige Prüfung eines ortsbeweglichen Flaschenbündels fest. Sie gilt für Flaschenbündel für verdichtete Gase, verflüssigte Gase und deren Gemische. Sie gilt ebenfalls für Acetylen-Flaschenbündel.
Diese Internationale Norm gilt nicht für Einheiten, in denen die Flaschen über Sammelleitungen in einem Stützrahmen miteinander verbunden sind, der für die dauerhafte Befestigung an einem Straßenfahrzeug, einem Eisenbahnwagen oder am Boden als Lagerbehälter beim Kunden ausgelegt ist. Sie gilt nicht für Flaschenbündel, welche für die Verwendung unter extremen Umwelt- oder Betriebsbedingungen ausgelegt sind, bei denen zusätzliche und außergewöhnliche Anforderungen gelten, um Sicherheitsnormen, Zuverlässigkeit und Leistungsfähigkeit aufrechtzuerhalten, z. B. für Offshore-Flaschenbündel.
Einige besondere (z. B. elektronische) Anwendungen erfordern einen alternativen Auslegungsansatz. Mit Zustimmung der Inspektionsstelle dürfen die Sammelleitung und ihre Rohrleitungsbauteile für einen für die Betriebsbedingungen angemessenen Druck ausgelegt und geprüft werden.
Besondere Anforderungen für Acetylen-Flaschenbündel, welche Acetylen in einem Lösemittel enthalten, sind in Anhang B angegeben. Diese Internationale Norm gilt jedoch nicht für Acetylen-Flaschenbündel mit lösemittelfreien Acetylenflaschen.
Diese Internationale Norm gilt in erster Linie für andere Industriegase als Flüssiggas (en: liquefied petroleum gas (LPG)), darf jedoch auch für LPG verwendet werden.
Sofern nicht anderweitig angegeben, müssen die in einem Flaschenbündel verwendeten einzelnen Flaschen den anwendbaren Normen für einzelne Flaschen entsprechen. Diese Internationale Norm legt die zusätzlichen Anforderungen an den Zusammenbau von einzelnen Flaschen zu einem Bündel fest.
Bouteilles à gaz - Cadres de bouteilles - Conception, fabrication, essais et inspection (ISO 10961:2010)
L'ISO 10961:2010 sp�cifie les exigences de conception, de fabrication, d'essai et de contr�le initial d'un cadre de bouteilles transportable. Elle est applicable aux cadres de bouteilles contenant du gaz comprim�, du gaz liqu�fi� et des m�langes de ceux-ci. Elle est applicable �galement aux cadres de bouteilles pour l'ac�tyl�ne.
L'ISO 10961:2010 n'est pas applicable aux assemblages dans lesquels les bouteilles sont li�es � un collecteur commun dans une structure support con�ue pour �tre fix�e de mani�re permanente � un v�hicule routier, � un wagon ferroviaire ou au sol en tant que r�servoir de stockage client. Elle n'est pas applicable aux cadres de bouteilles con�us pour une utilisation dans des conditions environnementales ou d'exploitation extr�mes, lorsque des exigences exceptionnelles sont impos�es pour le maintien des normes de s�curit�, de la fiabilit� et de la performance, par exemple les cadres de bouteilles pour une utilisation en mer.
Les exigences sp�cifiques pour les cadres de bouteilles d'ac�tyl�ne contenant de l'ac�tyl�ne dans un solvant sont fournies dans l'Annexe B. L'ISO 10961:2010 ne traite cependant pas des cadres de bouteilles d'ac�tyl�ne �quip�s de bouteilles d'ac�tyl�ne sans solvant.
L'ISO 10961:2010 est prioritairement pr�vue pour les gaz industriels autres que les gaz de p�trole liqu�fi� (GPL), mais elle peut �galement �tre utilis�e pour les GPL.
Plinske jeklenke - Snopi jeklenk - Konstruiranje, proizvodnja, preskušanje in kontrola (ISO 10961:2010)
ISO 10961:2010 določa zahteve za konstruiranje, proizvodnjo, preskušanje in začetni nadzor premičnih snopov jeklenk. Uporablja se za snope jeklenk, ki vsebujejo stisnjeni plin, utekočinjeni plin in mešanice teh plinov. Uporablja se tudi za snope jeklenk za acetilen.
Ne uporablja se za embalažo, v kateri so jeklenke zbrane v podpornem okvirju, ki je namenjen stalni namestitvi na cestno vozilo, železniški vagon ali tla kot odjemalčeva posoda za shranjevanje. Ne uporablja se za snope jeklenk, ki so namenjeni za uporabo v izrednih okoljskih ali delovnih pogojih, pri katerih so določene dodatne in izredne zahteve za ohranjanje varnostnih standardov, zanesljivosti in lastnosti, npr. snopi jeklenk na morju.
Posebne zahteve za snope jeklenk za acetilen, ki vsebujejo acetilen v raztopini, so vključene v prilogi. Vendar ISO 10961 ne zajema snopov jeklenk za acetilen, v katerih so jeklenke za acetilen brez raztopine.
ISO 10961 se predvsem uporablja za industrijske pline, ki niso utekočinjen naftni plin (LPG), vendar se lahko uporablja tudi za LPG.
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
SIST EN ISO 10961:2012
01-maj-2012
1DGRPHãþD
SIST EN 13769:2004
SIST EN 13769:2004/A1:2005
Plinske jeklenke - Snopi jeklenk - Konstruiranje, proizvodnja, preskušanje in
kontrola (ISO 10961:2010)
Gas cylinders - Cylinder bundles - Design, manufacture, testing and inspection (ISO
10961:2010)
Gasflaschen - Flaschenbündel - Auslegung, Herstellung, Prüfung und Inspektion (ISO
10961:2010)
Bouteilles à gaz - Cadres de bouteilles - Conception, fabrication, essais et inspection
(ISO 10961:2010)
Ta slovenski standard je istoveten z: EN ISO 10961:2012
ICS:
23.020.30 7ODþQHSRVRGHSOLQVNH Pressure vessels, gas
MHNOHQNH cylinders
SIST EN ISO 10961:2012 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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SIST EN ISO 10961:2012
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SIST EN ISO 10961:2012
EUROPEAN STANDARD
EN ISO 10961
NORME EUROPÉENNE
EUROPÄISCHE NORM
April 2012
ICS 23.020.30 Supersedes EN 13769:2003
English Version
Gas cylinders - Cylinder bundles - Design, manufacture, testing
and inspection (ISO 10961:2010)
Bouteilles à gaz - Cadres de bouteilles - Conception, Gasflaschen - Flaschenbündel - Auslegung, Herstellung,
fabrication, essais et inspection (ISO 10961:2010) Prüfung und Inspektion (ISO 10961:2010)
This European Standard was approved by CEN on 9 March 2012.
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, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2012 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 10961:2012: E
worldwide for CEN national Members.
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SIST EN ISO 10961:2012
EN ISO 10961:2012 (E)
Contents Page
Foreword .3
2
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SIST EN ISO 10961:2012
EN ISO 10961:2012 (E)
Foreword
The text of ISO 10961:2010 has been prepared by Technical Committee ISO/TC 58 “Gas cylinders” of the
International Organization for Standardization (ISO) and has been taken over as EN ISO 10961:2012 by
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 October 2012, and conflicting national standards shall be withdrawn at
the latest by October 2012.
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 supersedes EN 13769:2003.
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, 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.
Endorsement notice
The text of ISO 10961:2010 has been approved by CEN as a EN ISO 10961:2012 without any modification.
3
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SIST EN ISO 10961:2012
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SIST EN ISO 10961:2012
INTERNATIONAL ISO
STANDARD 10961
Second edition
2010-10-15
Gas cylinders — Cylinder bundles —
Design, manufacture, testing and
inspection
Bouteilles à gaz — Cadres de bouteilles — Conception, fabrication,
essais et inspection
Reference number
ISO 10961:2010(E)
©
ISO 2010
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SIST EN ISO 10961:2012
ISO 10961:2010(E)
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ii © ISO 2010 – All rights reserved
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SIST EN ISO 10961:2012
ISO 10961:2010(E)
Contents Page
Foreword .iv
Introduction.v
1 Scope.1
2 Normative references.1
3 Terms and definitions .2
4 Design.4
4.1 General .4
4.2 Material .4
4.3 Frame.4
4.4 Cylinders .6
4.5 Cylinder valves and cylinder fittings.6
4.6 Manifold.6
4.7 Main connection(s)/main valve(s).7
4.8 Assembled bundle.7
5 Manufacturing.7
6 Identification .7
6.1 General .7
6.2 Product and hazard identification .8
6.2.1 Precautionary labels .8
6.2.2 Colour coding .8
6.3 Bundle identification for filling .8
6.3.1 General .8
6.3.2 Grouping and size of marks .8
6.3.3 Manufacturing marks .8
6.3.4 Operational marks.9
6.3.5 Certification marks.9
6.4 Other useful information.9
7 Testing and inspection .9
7.1 General .9
7.2 Prototype testing of the frame, the manifold and the fully assembled bundle.10
7.2.1 Approvals .10
7.2.2 Tests .10
7.3 Test and inspection at time of manufacture.11
7.3.1 Frame.11
7.3.2 Manifold.12
7.3.3 Bundle.12
8 Documentation .12
Annex A (normative) Special requirements for design, manufacture and testing of bundles
disassembled at the time of filling, including acetylene cylinders .14
Annex B (normative) Specific requirements for acetylene cylinder bundles.15
Bibliography.20
© ISO 2010 – All rights reserved iii
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SIST EN ISO 10961:2012
ISO 10961:2010(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.
International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.
The main task of technical committees is to prepare International Standards. Draft International Standards
adopted by the technical committees are circulated to the member bodies for voting. Publication as an
International Standard requires approval by at least 75 % of the member bodies casting a vote.
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.
ISO 10961 was prepared by Technical Committee ISO/TC 58, Gas cylinders, Subcommittee SC 4,
Operational requirements for gas cylinders.
This second edition cancels and replaces the first edition (ISO 10961:2010), of which it constitutes a minor
revision.
iv © ISO 2010 – All rights reserved
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SIST EN ISO 10961:2012
ISO 10961:2010(E)
Introduction
For some applications, the contents of an individual gas cylinder may not satisfy the gas demand, in which
case assemblies of cylinders can be used to supply larger volumes of gas in a single unit. The single unit,
which contains a number of cylinders, is known as a cylinder bundle.
A cylinder bundle is a portable assembly which is designed to be routinely lifted and which consists of a frame
and two or more cylinders connected to a manifold by cylinder valves or fittings so that the cylinders can be
filled, transported and emptied without disassembly.
A cylinder bundle can be subjected to rough handling in the course of normal operations.
There are types of gas cylinder assemblies which use cylinder bundle components, but which are designed to
be disassembled at each filling to enable the cylinders to be filled individually. Although these assemblies do
not conform to the basic definition of a cylinder bundle, they are commonly referred to as bundles. Their
special requirements are included in Annex A.
Acetylene cylinder bundles are often filled without disassembly. However, in order to confirm their solvent
content, they are disassembled after a defined number of fillings.
In International Standards, weight is equivalent to a force, expressed in newtons. However, in common
parlance (as used in terms defined in this International Standard), the word “weight” continues to be used to
mean “mass”, even though this practice is deprecated (see ISO 80000-4).
© ISO 2010 – All rights reserved v
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SIST EN ISO 10961:2012
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SIST EN ISO 10961:2012
INTERNATIONAL STANDARD ISO 10961:2010(E)
Gas cylinders — Cylinder bundles — Design, manufacture,
testing and inspection
1 Scope
This International Standard specifies the requirements for the design, construction, testing and initial
inspection of a transportable cylinder bundle. It is applicable to cylinder bundles containing compressed gas,
liquefied gas and mixtures thereof. It is also applicable to cylinder bundles for acetylene.
This International Standard does not apply to packages in which cylinders are manifolded together in a
support frame which is designed to be fixed permanently to a road vehicle, to a railway wagon or to the
ground as a customer storage vessel. It does not apply to cylinder bundles which are designed for use in
extreme environmental or operational conditions when additional and extraordinary requirements are imposed
to maintain safety standards, reliability and performance, e.g. offshore cylinder bundles.
Some special applications (e.g. electronics) require an alternative design approach. With the agreement of the
inspection body, the manifold and its piping components may be designed and tested at a pressure which is
appropriate to the service conditions.
Specific requirements for acetylene cylinder bundles containing acetylene in a solvent are included in Annex B.
This International Standard does not, however, cover acetylene cylinder bundles with solvent-free acetylene
cylinders.
This International Standard is intended primarily for industrial gases other than liquefied petroleum gases
(LPGs), but it may also be used for LPGs.
Unless otherwise stated, individual cylinders within cylinder bundles will have to conform to applicable
standards for single cylinders. This International Standard specifies the additional requirements that apply
when individual cylinders are assembled into a bundle.
2 Normative references
The following referenced documents are indispensable for the application 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 7225, Gas cylinders — Precautionary labels
ISO 10297, Transportable gas cylinders — Cylinder valves — Specification and type testing
ISO 13769, Gas cylinders — Stamp marking
ISO 14113, Gas welding equipment — Rubber and plastics hose and hose assemblies for use with industrial
gases up to 450 bar (45 MPa)
© ISO 2010 – All rights reserved 1
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SIST EN ISO 10961:2012
ISO 10961:2010(E)
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
3.1
cylinder bundle
bundle
portable assembly which consists of a frame and two or more cylinders, each of a capacity up to 150 l and
with a combined capacity of not more than 3 000 l, or 1 000 l in the case of toxic gases, connected to a
manifold by cylinder valves or fittings such that the cylinders are filled, transported and emptied without
disassembly
3.2
frame
structural and non-structural members of a bundle which combine all other components together, whilst
providing protection for the bundle's cylinders, valves and manifold and which enable the bundle to be
transported
3.3
cylinder valve
valve which is fitted into a cylinder and to which a manifold is connected in a bundle
3.4
cylinder fitting
component, with no gas shut-off capability, which serves as a method for connecting a bundle's manifold to its
individual cylinders when cylinder valves are not fitted to the cylinders
3.5
manifold
piping system for connecting cylinder valves or cylinder fittings to the main valve(s) or main connection(s)
3.6
main valve
valve which is fitted to the manifold and which is used for the isolation of the bundle
3.7
main connection
means of making a gas connection to a bundle
3.8
tare weight
weight of the bundle when empty of gas product
3.9
maximum gross weight
sum of the tare weight of the bundle and the maximum permissible filling weight
3.10
compressed gas
gas which, when packaged under pressure, is entirely gaseous at −50 °C (including all gases with a critical
temperature u −50 °C)
[GHS]
2 © ISO 2010 – All rights reserved
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SIST EN ISO 10961:2012
ISO 10961:2010(E)
3.11
liquefied gas
gas which, when packaged under pressure, is partially liquid at temperatures above −50 °C
[GHS]
NOTE A distinction is made between
a) high-pressure liquefied gas: a gas with a critical temperature between −50 °C and +65 °C, and
b) low-pressure liquefied gas: a gas with a critical temperature above +65 °C.
3.12
proof test pressure
hydraulic pressure which demonstrates the structural integrity of the manifold
3.13
burst pressure
〈gas cylinder bundles〉 highest pressure reached in a cylinder or the bundle manifold during a burst test
NOTE Adapted from ISO 10286.
3.14
working pressure
settled pressure for a compressed or dissolved gas at a uniform temperature of 288 K (15 °C) for a full bundle
3.15
bundle test pressure
test pressure of the cylinder and manifold assembled together
3.16
maximum permissible filling weight
product of the minimum guaranteed water capacity of the cylinders of the bundle and the filling ratio of the gas
contained
3.17
very toxic gas
gas with an LC of less than or equal to 200 ppm (V/V), where the LC value corresponds to one hour of
50 50
exposure to gas and ppm (V/V) indicates parts per million, by volume
NOTE Adapted from ISO 10298.
3.18
toxic gas
gas with an LC of more than 200 ppm but less than or equal to 5 000 ppm, where the LC value
50 50
corresponds to one hour of exposure to gas and ppm (V/V) indicates parts per million, by volume
NOTE Adapted from ISO 10298.
3.19
filling pressure
pressure to which a bundle is filled at the time of filling
3.20
bundle manufacturer
entity that assembles the various components of the bundle into its final configuration
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SIST EN ISO 10961:2012
ISO 10961:2010(E)
3.21
inspection body
independent inspection and testing body approved by the competent authority
[UN Model Regulations]
3.22
competent authority
any national body or authority designated or otherwise recognized as such, having jurisdiction for the transport
of dangerous goods and the approval of gas cylinders
NOTE Adapted from UN Model Regulations.
4 Design
4.1 General
The design of the bundle shall take into consideration its ease of assembly, inspection and operation.
All pressurized components shall, as a minimum requirement, be designed to operate safely in the
temperature range −20 °C to +65 °C.
Where service temperatures outside this range are required, the bundle design shall include additional
requirements (e.g. specific sealing material). Bundles that are filled by weight shall not feature component
parts which are de-mountable without the use of tools, with the exception of the main valve outlet protection
cap.
4.2 Material
Materials for cylinders, valves and all parts which are in contact with the intended gas shall be selected in
accordance with the relevant International Standards on compatibility (e.g. ISO 11114-1 and ISO 11114-2).
4.3 Frame
4.3.1 The frame shall retain securely all the components of the bundle and shall protect them from damage
which might cause leaks. Such damage can be caused by vibration, impact loads or handling loads which can
be expected in normal operation. The method of cylinder restraint shall minimize any vertical or horizontal
movement or rotation of the cylinder. All cylinder displacement which would impose undue strain on the
manifold (see 7.2.2.2) shall be prevented. The total assembly shall be capable of withstanding rough handling,
including being dropped or toppled.
Additionally, no leakage of gas shall be caused during the lifting of the bundle (see 4.3.2).
4.3.2 The frame shall include features designed for the handling and transportation of the bundle. Bundles
can typically be lifted by fork-lift, lift-jack trolley or overhead crane. If the bundle is designed to be lifted by an
overhead crane, lifting eyes shall be provided on the frame. Different designs with one or more lifting eyes are
permitted.
NOTE National regulations might be applicable when lifting eyes are used.
In all cases, lifting eyes shall be designed to withstand a design load of 2 × maximum gross weight. Bundles
with more than one lifting eye shall be designed such that a minimum sling leg angle α of 45° to the horizontal
can be achieved during lifting using the lifting eyes (see Figure 1).
4 © ISO 2010 – All rights reserved
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SIST EN ISO 10961:2012
ISO 10961:2010(E)
Key
1 lifting eye
2 gas cylinder bundle
α sling leg angle
Figure 1 — Minimum sling leg angle
Where four lifting eyes are used, their design shall be such that they are strong enough to allow the bundle to
be lifted by only two.
Where two or four lifting eyes are used, diametrically opposite lifting eyes shall be aligned with each other to
allow correct lifting using shackle pins.
Lifting equipment shall be designed so that it does not interfere with any pressurized component, e.g. the
manifold.
When a bundle is designed to be moved by fork-lift truck, it shall feature two fork apertures on each side from
which it is to be lifted. The fork apertures shall be positioned symmetrically about the centre of gravity and
their size shall be appropriate to the forks used to move the bundle. The fork apertures shall be designed such
that the bundle cannot accidentally disengage from the forks.
4.3.3 Frame structural members shall be designed for a vertical load of 2 × the maximum gross weight of
the bundle. Design stress levels shall not exceed 0,9 × the yield strength of the material.
4.3.4 The frame design shall ensure that there are no protrusions from the exterior frame structure which
could cause hazards.
4.3.5 There shall be no features in which water and debris can collect to increase the tare weight of bundles
filled by weight, or to cause corrosion.
4.3.6 The floor of the bundle frame shall not buckle under normal operational conditions and shall facilitate
the drainage of water and debris from around the base of the cylinders.
4.3.7 The design shall ensure stability under normal operating conditions. The centre of gravity shall stay
within the footprint of the bundle when rotated to an angle of not more than 12° in both directions.
4.3.8 If the frame design includes any movable doors or covers, these shall be capable of being secured in
position with latches, which shall not be capable of being dislodged by operational impact loads.
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SIST EN ISO 10961:2012
ISO 10961:2010(E)
4.3.9 Access shall be maintained to all valves which need to be operated in normal service or in an
emergency.
4.4 Cylinders
Cylinders within a bundle shall be suitable for the intended gas service. They shall all have the same test
pressure, shall be of similar size and shall conform to the appropriate standards covering individual cylinders.
4.5 Cylinder valves and cylinder fittings
4.5.1 Either cylinder valves or a cylinder fitting shall be fitted into the inlet threads of the cylinders within the
bundle. The items selected will depend on the gas service within the bundle and the operational requirements
(e.g. for gases not covered under 4.5.4, cylinder valves are not required).
For acetylene, see Annex B.
4.5.2 Cylinder valves and cylinder fittings shall be compatible with the gas and pressure for which the
bundle is intended.
4.5.3 Cylinder valves and cylinder fittings shall be compatible with the inlet threads of the cylinders.
4.5.4 A cylinder valve shall be used when the bundle contains a very toxic gas or gas mixture, a pyrophoric
gas or a flammable mixture with more than 1 % of pyrophoric components.
4.5.5 A cylinder valve shall not be used for non-toxic liquefied gases.
4.5.6 If the gas is a very toxic liquefied or toxic liquefied gas, the individual cylinders shall be removed from
the frame for filling in accordance with Annex A to ensure that individual cylinders are not overfilled.
4.5.7 When cylinder valves are fitted, their outlet connections shall be of a form appropriate to the product
within the bundle, or of a form which cannot lead to the incorrect connection to equipment designed for other
products.
4.5.8 For non-toxic, non-flammable gases (e.g. CO ), when the use of a safety relief device is required by
2
regulation, the safety relief device shall be designed to avoid cylinder burst.
4.6 Manifold
4.6.1 The manifold and its material shall be compatible with the gas and the pressure for which the bundle
is intended.
For acetylene, see Annex B.
4.6.2 For compressed and liquefied gases, the manifold shall be designed in such a way that the burst
pressure shall be greater than or equal to 1,5 × the test pressure of the cylinders in the bundle.
4.6.3 The proof test pressure of the manifold shall not be less than the test pressure of the cylinders in the
bundle
...
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