LPG equipment and accessories - Procedure for checking transportable refillable LPG cylinders before, during and after filling

This document specifies the procedures to be adopted when checking transportable refillable LPG cylinders before, during and after filling.
This document applies to transportable refillable LPG cylinders of water capacity not exceeding 150 l and deemed to be fitted with valves designed according to EN ISO 14245 [4] and EN ISO 15995 [5].
This document does not cover the requirements for filling LPG cylinders that are designed and equipped for filling by the user.
This document does not cover the requirements for filling LPG containers on vehicles.
This document is applicable to the following:   
-   welded and brazed steel LPG cylinders with a specified minimum wall thickness (see EN 1442 and  EN 12807 [1] or an equivalent standard);
-   welded steel LPG cylinders without specified minimum wall thickness (see EN 14140 or an equivalent standard);
-   welded aluminium LPG cylinders (see EN 13110 [2] or an equivalent standard);
-   composite LPG cylinders (see EN 14427 or an equivalent standard); and
-   over-moulded cylinders (OMC).
Specific requirements for the different types of cylinders are detailed in Annex A, Annex B, Annex C, Annex D and Annex G.
This draft standard is intended to be applied to cylinders complying with RID/ADR [6] [7] (including pi marked cylinders) and also to existing non RID/ADR cylinder populations.

Flüssiggas-Geräte und Ausrüstungsteile - Kontrollverfahren für Flaschen für Flüssiggas (LPG) vor, während und nach dem Füllen

Dieses Dokument legt die Verfahren zur Überprüfung von ortsbeweglichen, wiederbefüllbaren Flaschen für Flüssiggas (LPG, en: liquefied petroleum gas) vor, während und nach dem Füllen fest.
Dieses Dokument gilt für ortsbewegliche, wiederbefüllbare Flaschen für Flüssiggas (LPG) mit einem Fassungsraum von höchstens 150 l und gilt als passend für Ventile, die nach EN ISO 14245 [4] und EN ISO 15995 [5] gebaut sind.
Dieses Dokument enthält keine Anforderungen für das Füllen von Flaschen für Flüssiggas (LPG), die für das Füllen durch den Benutzer ausgelegt und ausgerüstet sind.
Dieses Dokument enthält keine Anforderungen für das Füllen von Behältern für Flüssiggas (LPG) auf Fahrzeugen.
Dieses Dokument gilt für Folgendes:
—   geschweißte und hartgelötete Flaschen aus Stahl für Flüssiggas (LPG) mit festgelegter Mindestwanddicke (siehe EN 1442 und EN 12807 [1] oder eine gleichwertige Norm);
—   geschweißte Flaschen aus Stahl für Flüssiggas (LPG) ohne festgelegte Mindestwanddicke (siehe EN 14140 oder eine gleichwertige Norm);
—   geschweißte Flaschen aus Aluminium für Flüssiggas (LPG) (siehe EN 13110 [2] oder eine gleichwertige Norm);
—   Flaschen aus Verbundwerkstoff für Flüssiggas (LPG) (siehe EN 14427 oder eine gleichwertige Norm); und
—   umformte Flaschen (OMC, en: over-moulded cylinders).
Spezifische Anforderungen für verschiedene Flaschentypen sind in Anhang A, Anhang B, Anhang C, Anhang D und Anhang G beschrieben.
Dieses Dokument ist zur Anwendung für das Füllen von Flaschen nach RID/ADR [6] [7] (einschließlich Flaschen mit Pi-Kennzeichnung) vorgesehen, sowie für bestehende Flaschengruppen, die nicht RID/ADR entsprechen.

Équipements pour GPL et leurs accessoires - Procédure de vérification des bouteilles transportables et rechargeables pour GPL avant, pendant et après le remplissage

Le présent document décrit les procédures à employer lors de la vérification des bouteilles pour GPL transportables et rechargeables, avant, pendant et après le remplissage.
Le présent document s'applique aux bouteilles transportables et rechargeables pour gaz de pétrole liquéfié (GPL), d'une capacité en eau ne dépassant pas 150 l et réputées être équipées de robinets conçus conformément à l'EN ISO 14245 [4] et à l'EN ISO 15995 [5].
Le présent document ne couvre pas les exigences de remplissage des bouteilles pour GPL conçues et équipées pour être remplies par l'utilisateur.
Le présent document ne couvre pas les exigences concernant le remplissage de réservoirs GPL sur les véhicules.
Le présent document s'applique aux éléments suivants :
   bouteilles pour GPL en acier soudé et brasé, avec une épaisseur minimale de paroi définie (voir l'EN 1442 et l'EN 12807 [1] ou une norme équivalente) ;
   bouteilles pour GPL en acier soudé, sans épaisseur minimale de paroi définie (voir l'EN 14140 ou une norme équivalente) ;
   bouteilles pour GPL en aluminium soudé (voir l'EN 13110 [2] ou une norme équivalente) ;
   bouteilles pour GPL en matériau composite (voir l'EN 14427 ou une norme équivalente) ; et
   bouteilles surmoulées (OMC).
Les exigences spécifiques relatives aux différents types de bouteilles sont décrites en détail dans les Annexes A, B, C, D et G.
Il est prévu d'appliquer le présent document à des bouteilles conformes au RID/ADR [6] [7] (y compris les bouteilles comportant un marquage pi), ainsi qu'aux familles de bouteilles existantes non conformes au RID/ADR.

Oprema in pribor za utekočinjeni naftni plin (UNP) - Postopek za preverjanje premičnih, ponovno polnjivih jeklenk za UNP pred polnjenjem, med njim in po njem

General Information

Status
Not Published
Current Stage
4060 - Closure of enquiry - Enquiry
Due Date
04-Mar-2021
Completion Date
04-Mar-2021

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SLOVENSKI STANDARD
oSIST prEN 1439:2020
01-december-2020
Oprema in pribor za utekočinjeni naftni plin (UNP) - Postopek za preverjanje
premičnih, ponovno polnjivih jeklenk za UNP pred polnjenjem, med njim in po
njem

LPG equipment and accessories - Procedure for checking transportable refillable LPG

cylinders before, during and after filling

Flüssiggas-Geräte und Ausrüstungsteile - Kontrollverfahren für Flaschen für Flüssiggas

(LPG) vor, während und nach dem Füllen

Équipements pour GPL et leurs accessoires - Procédure de vérification des bouteilles

transportables et rechargeables pour GPL avant, pendant et après le remplissage
Ta slovenski standard je istoveten z: prEN 1439
ICS:
23.020.35 Plinske jeklenke Gas cylinders
oSIST prEN 1439:2020 en,fr,de

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

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oSIST prEN 1439:2020
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oSIST prEN 1439:2020
DRAFT
EUROPEAN STANDARD
prEN 1439
NORME EUROPÉENNE
EUROPÄISCHE NORM
December 2020
ICS 23.020.35 Will supersede EN 1439:2017
English Version
LPG equipment and accessories - Procedure for checking
transportable refillable LPG cylinders before, during and
after filling

Équipements pour GPL et leurs accessoires - Procédure Flüssiggas-Geräte und Ausrüstungsteile -

de vérification des bouteilles transportables et Kontrollverfahren für Flaschen für Flüssiggas (LPG)

rechargeables pour GPL avant, pendant et après le vor, während und nach dem Füllen

remplissage

This draft European Standard is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee

CEN/TC 286.

If this draft becomes a European Standard, 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.

This draft European Standard was established by CEN 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.

Recipients of this draft are invited to submit, with their comments, notification of any relevant patent rights of which they are

aware and to provide supporting documentation.

Warning : This document is not a European Standard. It is distributed for review and comments. It is subject to change without

notice and shall not be referred to as a European Standard.
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. prEN 1439:2020 E

worldwide for CEN national Members.
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oSIST prEN 1439:2020
prEN 1439:2020 (E)
Contents Page

European foreword ...................................................................................................................................................... 3

Introduction .................................................................................................................................................................... 4

Annex A (normative) Specific requirements for welded and brazed steel LPG cylinders ............... 10

Annex B (normative) Specific requirements for welded steel LPG cylinders in accordance

with EN 14140 or equivalent standard ................................................................................................. 13

B.1 General.............................................................................................................................................................. 13

B.2 Procedure for establishing rejection criteria for carbon steel cylinders ................................. 13

B.3 Rejection criteria for stainless steel cylinders ................................................................................... 15

Annex C (normative) Specific requirements for welded aluminium LPG cylinders .......................... 18

Annex D (normative) Specific requirements for composite LPG cylinders .......................................... 21

D.1 Rejection criteria .......................................................................................................................................... 21

Annex E (normative) Safe filling conditions ..................................................................................................... 31

Annex F (normative) Flow diagram of the checks before, during and after filling ............................ 32

Annex G (normative) Specific inspection procedure for over-moulded cylinder (OMC) ................. 33

G.1 Application and cylinder description .................................................................................................... 33

G.2 Cylinders suitable for filling ..................................................................................................................... 33

G.3 Cylinders for periodic inspection............................................................................................................ 33

G.4 Cylinders requiring further assessment .............................................................................................. 33

G.5 Reassessment of cylinders......................................................................................................................... 33

Annex H (informative) Example of an Over-Moulded Cylinder ................................................................ 35

Bibliography ................................................................................................................................................................. 36

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oSIST prEN 1439:2020
prEN 1439:2020 (E)
European foreword

This document (prEN 1439:2020) has been prepared by Technical Committee CEN/TC 286 “Liquefied

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

This document is currently submitted to the CEN Enquiry.
This document will supersede EN 1439:2017.

In comparison with the previous edition, the following technical modifications have been made:

— definitions have been updated and modified;
— changes in requirement to Clause 6;
— the addition of requirements to 7.3;

— the addition of requirements for composite cylinders with a metallic liner in Annex D.

This document has been submitted for reference in:
— the RID and/or
— 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 can lead to temporary non-compliances with the

clauses of this document.
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oSIST prEN 1439:2020
prEN 1439:2020 (E)
Introduction

This document calls for the use of substances and procedures that can be injurious to health if adequate

precautions are not taken. It refers only to technical suitability and does not absolve the user from legal

obligations relating to health and safety at any stage.

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

appropriately qualified and experienced people. Where judgements are called for, it has been assumed

that they are made by competent persons who have been trained specifically for the tasks.

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

covered in CEN/TS 16765 [3] and this Technical Specification should be read in conjunction with this

document. This Technical Specification provides guidance on the environmental aspects to be

considered regarding equipment and accessories produced for the LPG industry and the following is

addressed:
a) design;
b) manufacture;
c) packaging;
d) use and operation; and
e) disposal.
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oSIST prEN 1439:2020
prEN 1439:2020 (E)
1 Scope

This document specifies the procedures to be adopted when checking transportable refillable LPG

cylinders before, during and after filling.

This document applies to transportable refillable LPG cylinders of water capacity not exceeding 150 l

and deemed to be fitted with valves designed according to EN ISO 14245 [4] and EN ISO 15995 [5].

This document does not cover the requirements for filling LPG cylinders that are designed and

equipped for filling by the user.

This document does not cover the requirements for filling LPG containers on vehicles.

This document is applicable to the following:

— welded and brazed steel LPG cylinders with a specified minimum wall thickness (see EN 1442 and

EN 12807 [1] or an equivalent standard);

— welded steel LPG cylinders without specified minimum wall thickness (see EN 14140 or an

equivalent standard);
— welded aluminium LPG cylinders (see EN 13110 [2] or an equivalent standard);
— composite LPG cylinders (see EN 14427 or an equivalent standard); and
— over-moulded cylinders (OMC).

Specific requirements for the different types of cylinders are detailed in Annex A, Annex B, Annex C,

Annex D and Annex G.

This document is intended to be applied to cylinders complying with RID/ADR [6] [7] (including pi

marked cylinders) and also to existing non RID/ADR cylinder populations.
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 549, Rubber materials for seals and diaphragms for gas appliances and gas equipment

EN 1440, LPG equipment and accessories - Transportable refillable traditional welded and brazed steel

Liquefied Petroleum Gas (LPG) cylinders - Periodic inspection

EN 1442, LPG equipment and accessories - Transportable refillable welded steel cylinders for LPG - Design

and construction

EN 10028-7, Flat products made of steels for pressure purposes - Part 7: Stainless steels

EN 12816, LPG equipment and accessories - Transportable refillable LPG cylinders - Disposal

EN 13952, LPG equipment and accessories - Filling operations for LPG cylinders

EN 14140:2014, LPG equipment and accessories - Transportable refillable welded steel cylinders for LPG

- Alternative design and construction
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oSIST prEN 1439:2020
prEN 1439:2020 (E)

EN 14427, LPG equipment and accessories - Transportable refillable fully wrapped composite cylinders for

LPG - Design and construction
EN 14894, LPG equipment and accessories - Cylinder and drum marking

EN 15202, LPG equipment and accessories - Essential operational dimensions for LPG cylinder valve outlet

and associated equipment connections

EN 16728, LPG equipment and accessories - Transportable refillable LPG cylinders other than traditional

welded and brazed steel cylinders - Periodic inspection
3 Terms and definitions
For the purposes of this document, the following terms and definitions 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
3.1
liquefied petroleum gas
LPG

low pressure liquefied gas composed of one or more light hydrocarbons which are assigned to UN 1011,

UN 1075, UN 1965, UN 1969 or UN 1978 only and which consists mainly of propane, propene, butane,

butane isomers, butene with traces of other hydrocarbon gases
3.2
competent person

person which by combination of appropriate qualification, training, experience, and resources, is able to

make objective judgments on the subject
3.3
over-moulded cylinder
OMC

pressure receptacle intended for the carriage of LPG of a water capacity not exceeding 13 l made of a

coated steel inner cylinder with an over-moulded protective case made from cellular plastic, which is

non removable and bonded to the outer surface of the steel cylinder wall
3.4
periodic inspection

activities carried out at defined intervals, such as examining, measuring, testing or gauging the

characteristics of a pressure vessel or a pressure receptacle and comparing these with specified

requirements
3.5
filled to a level
filled to a fixed level using a fixed liquid level device
3.6
filled by mass
filled with LPG using a weighing machine
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oSIST prEN 1439:2020
prEN 1439:2020 (E)
3.7
filled by volume
filled with a fixed volume of LPG
3.8
reconditioning

major repairs to cylinders, which can include hot work, welding or de-denting carried out by specialists

away from potential sources of flammable air/gas mixture
3.9
tare mass

sum of the mass of the empty cylinder, the mass of the valve including a dip tube where fitted, and the

mass of all other parts that are permanently attached to the cylinder when it is being filled, e.g. fixed

valve guard
3.10
filling plant
facility where filling and checking of LPG cylinders takes place
3.11
protective casing

layer of protective material which gives mechanical protection which, either cannot be removed

without destroying it or is only removable with special tools or is bonded to the cylinder wall

Note 1 to entry: This definition can be applied to cylinders with over-moulded layers or with separate casings.

3.12
filling ratio

ratio of the mass of gas introduced into a cylinder or pressure drum to the mass of water at 15 °C that

would fill the same cylinder or pressure drum fitted ready for use
3.13
competent authority

authority or authorities or any other body or bodies designated as such in each State and in each

specific case in accordance with domestic law
3.14
reference temperature
temperature used for the calculation of the safe filling quantity
4 Segregation of cylinders prior to filling
4.1 General

Cylinders shall be checked and segregated into the categories specified in 4.2 to 4.4 by a competent

person.

The flow diagram of the checks before, during and after filling given in Annex F (Figure F.1) shall be

followed.
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oSIST prEN 1439:2020
prEN 1439:2020 (E)
4.2 Cylinders suitable for filling

The cylinder shall be deemed suitable for filling if the following conditions apply:

a) tare indication and water capacity are marked;

b) allowed quantity and identification of the product (butane, propane or mixtures thereof, the

properties of which were considered for the design of the cylinder) are indicated;

c) cylinder is within the test date as determined from the marked manufacture date or periodic

inspection date;

d) cylinder and valve do not have unacceptable physical damage, corrosion or other defects. For

metallic cylinders, the inspection of the foot-ring for corrosion or damage shall determine the need

for a more thorough external visual examination of the cylinder base;

e) cylinder is fitted with a pressure relief valve, if required by the manufacturing standard; and

f) when cylinders are filled to a level, the fixed liquid level device shall be checked for operability.

4.3 Cylinders for periodic inspection

A cylinder shall be set aside for periodic inspection in accordance with EN 1440 or EN 16728 when

either of the following conditions apply:
a) cylinder is out of test date; or
b) cylinder cannot be confirmed to be within test date.
4.4 Cylinders requiring further assessment
A cylinder shall be set aside for further assessment (see Clause 5), if:
a) the tare indication of a cylinder, filled by mass, is missing or illegible;
b) the water capacity of a cylinder, filled by volume, is missing or illegible;

c) the cylinder is judged to have unacceptable physical damage, corrosion or other defects;

d) the valve or pressure relief valve (if fitted) is damaged, severely corroded or has been previously

identified as leaking.
Cylinders identified as leaking shall be made safe prior to their reassessment.
5 Reassessment of cylinders

Cylinders that have been set aside (see 4.4) shall be examined by a competent person who shall

determine if they are suitable for filling or if they shall be sent for reconditioning, where permitted by

the appropriate annex of this document, or disposal in accordance with EN 12816 (where applicable).

Cylinders that are intended to be filled by mass, and where the indication of tare weight is missing or

illegible, shall be reassessed and have the indication of the tare mass applied in accordance with

EN 14894.

Cylinders that are intended to be filled by volume, and where the indication of water capacity is missing

or illegible, shall be reassessed and have the indication of the water capacity applied in accordance with

EN 14894.
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oSIST prEN 1439:2020
prEN 1439:2020 (E)

Leaking cylinders and cylinders with damaged or leaking valves shall be safely vented. Cylinders

leaking through the body shall be disposed of in accordance with EN 12816 (where applicable). Leaking

or damaged valves shall be repaired or replaced. Replacement valve seals shall comply with the

requirements of EN 549 and EN 15202.

Valves can be removed from and refitted safely to a pressurized LPG cylinder, provided the facility

includes dedicated equipment. This equipment shall only be operated by a competent person working

in accordance with a written procedure.

The filling plant shall have means to ensure that, when a valve is fitted, its thread is of the same type as

the cylinder bung thread and its torque is compliant with both the cylinder and valve manufacturer’s

recommendations. The equipment used to fit valves shall be regularly checked, serviced and calibrated.

Rejection limits for physical, material and other defects on the cylinder shell or protective casing shall

be applied in accordance with Annex A, Annex B, Annex C, Annex D and Annex G.
6 Filling conditions

The filling plant operation and filling checks shall be in accordance with EN 13952.

Cylinders shall not be filled in excess of the safe filling quantity. The safe filling quantity is determined

from the safe filling ratio agreed by the relevant national competent authorities in accordance with

Annex E.
7 Post filling checks
7.1 Check of filled amount

Each cylinder shall be checked to ensure that the maximum mass has not been exceeded, either by

check weighing within the tolerances as determined by the relevant national competent authorities or

by a determination of the ullage space remaining. Where accepted by the relevant national competent

authorities, other systems of checking, such as sample weighing or statistical data application, may be

used when the filling mass is controlled automatically.
7.2 Action necessary for over/under-filled cylinders

If the cylinder is over-filled, the excess LPG shall be removed as soon as reasonably practical and the

cylinder re-checked for correct fill quantity.

If the cylinder is under-filled, the appropriate amount of LPG shall be added and the cylinder re-checked

for correct fill quantity.
7.3 Final checks

Cylinders, valves and valve seals shall be checked for leakage. Leaks shall be dealt with in accordance

with the procedures in Clause 5. The admissible leakage rate shall be either indicated in the national

regulation or defined by the national competent authority, but in any case, not higher than 5 g per hour

(g/h).

Equipment used to check for leakage shall be checked, serviced and calibrated regularly. Checks to

ensure the correct functioning of the leak detectors on the filling line shall be made, as a minimum, at

the beginning of every shift.

Cylinders shall be checked prior to dispatch or storage, for the correct fitting of valve caps or plugs,

valve protection caps/guards and labelling, if required.
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oSIST prEN 1439:2020
prEN 1439:2020 (E)
Annex A
(normative)
Specific requirements for welded and brazed steel LPG cylinders

Rejection limits for physical, material and other defects on the cylinder shell are given in Table A.1,

Table A.2 and Table A.3.
Table A.1 — Physical defects in the cylinder wall
Defect Description Rejection limit
Bulge Visible swelling of the cylinder. All.

Dent A depression in the cylinder that has When the depth of the dent exceeds 25 % of its

neither penetrated nor removed width at any point .
metal, when its width at any point is
greater than 2 % of the external
cylinder diameter.

Cut or A sharp impression where metal has Where the original calculated wall thickness is

gouge been removed or redistributed. known:
Depth of cut or gouge is such that the
undamaged (remaining) wall is less than the
minimum calculated wall thickness.
Where the original calculated wall thickness is
not known:
All.

Dent A depression in the cylinder within When the size of the dent, cut or gouge exceeds

containing which there is a cut or gouge. the dimensions for rejection as an individual

cut or defect.
gouge
Crack A split or rift in the cylinder shell. All.
Lamination Layering of the material within the All.
cylinder wall appearing as a
discontinuity, crack, lap or bulge at
the surface.

Appearance (e.g. sharp dent) and location (e.g. on shoulder of the cylinder) also play a part in the evaluation

of dent severity.
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oSIST prEN 1439:2020
prEN 1439:2020 (E)
Table A.2 — Corrosion on the cylinder wall
Type of Description Rejection limit
corrosion

Isolated A pitting of metal occurring in When the depth of discrete pits exceeds 0,6 mm. A

corrosion pits isolated areas at a greater depth of corrosion can be accepted provided

concentration not greater that depth of corrosion does not reduce the wall
than 1 pit per 500 mm of thickness below the minimum calculated wall
surface area. thickness.

Area Reduction in wall thickness When the depth of penetration of any pit exceeds

corrosion over an area not exceeding 0,4 mm. A greater depth can be accepted provided

20 % of the cylinder surface. that the depth of corrosion does not reduce the wall

thickness below the minimum calculated wall
thickness.

General A reduction in wall thickness When the depth of penetration of any pit exceeds

corrosion over an area exceeding 20 % 0,2 mm. A greater depth can be accepted providing

of the cylinder surface. that the depth of corrosion does not reduce the wall
thickness below the minimum calculated wall
thickness.

Chain pitting A series of pits or corroded When the total length of corrosion in any direction

or line or cavities of limited width along exceeds 50 % of the circumference of the cylinder; or

channel the length or around the
When the depth of penetration exceeds 0,4 mm. A
corrosion cylinder circumference.
greater depth can be accepted providing that the
depth of corrosion does not reduce the wall
thickness below the minimum calculated wall
thickness; or
When the depth of corrosion cannot be measured.

Crevice Crevice corrosion occurs in When the depth of penetration exceeds 0,4 mm or

corrosion the area of the intersection of when the depth of corrosion cannot be measured.

the foot-ring or shroud with
the cylinder.
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oSIST prEN 1439:2020
prEN 1439:2020 (E)
Table A.3 — Other defects
Defect Description Rejection limit

Depressed Damage to the bung which has altered the profile of — A limited level of

bung the cylinder. depression/alignment
deviation, as agreed by the
competent authority;
— Otherwise; All.
Arc or torch Burning of the cylinder base metal, a hardened heat All.
burns affected zone, the addition of extraneous weld metal,
or the removal of metal by scarfing or cratering.
Fire damage Excessive general or localized heating of a cylinder All.
usually indicated by:
— charring or burning of paint;
— fire damage of the metal;
— distortion of the cylinder;
— melting of metallic valve parts;
— melting of any plastic components, e.g. date ring,
plug or cap.
Damaged Foot ring not firmly attached. All.
foot-ring
Badly deformed foot-ring. Unstable or unbalanced
cylinder.
Damaged Loose or badly deformed shroud. Preventing proper operation
shroud or protection of valve.

If paint is only superficially charred, a cylinder may be accepted by a competent person.

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oSIST prEN 1439:2020
prEN 1439:2020 (E)
Annex B
(normative)
Specific requirements for welded steel LPG cylinders in accordance with
EN 14140 or equivalent standard
B.1 General

The owner of the cylinder (or their authorized representative) shall provide the testing station with the

rejection criteria for the physical and material defects and heat damage to the cylinder.

The procedure for establishing the acceptance/rejection criteria is described in B.2.

These criteria shall be at least those established by the manufacturer, taking into account the design

conditions of the cylinder, e.g. wall thickness, material, protective casing.

The procedure and the records of the test results shall be witnessed and assessed by a competent

authority.

The descriptions of defects on carbon steel cylinders are shown in Table B.1, Table B.2 and Table B.3.

The description of defects for stainless steel cylinders are shown in Table B.4, Table B.5 and Table B.6.

B.2 Procedure for establishing rejection criteria for carbon steel cylinders

The rejection criteria for the defects described in Table B.1, Table B.2 and Table B.3 shall be established

in accordance with the following procedure for each design of cylinder as defined in EN 14140:

— for each defect, four cylinders with the same defect shall be tested. The size of this defect shall be

recorded. If the defects of the cylinders are different sizes, the size of the smaller defect shall be

recorded;

— two cylinders shall be submitted to the burst test as described in EN 14140 and two cylinders shall

be submitted to the fatigue test as described in EN 14140;

— if the cylinders pass the tests, the defect is acceptable; the rejection limit can then be defined by the

size of that defect;

— when all rejection criteria have been established for a design of cylinder as defined in

EN 14140:2014, Table B.1; and

— Table B.2 and Table B.3 shall be completed by the owner/manufacturer of the cylinder.

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oSIST prEN 1439:2020
prEN 1439:2020 (E)
Table B.1 — Carbon steel cylinders - Physical defects in the cylinder wall
Defects Description Rejection limit
Bulge Visible swelling of the cylinder All.
Dent A depression in the cylinder that See B.2 .
has neither penetrated nor
removed metal, and its width at any
point is greater than 2 % of the
external cylinder diameter.
Cut or gouge A sharp impression where metal See B.2.
has been removed or redistributed.
Intersecting cut or gouge The point of intersection of two or All.
more cuts or gouges.

Dent containing cut or A depression in the cylinder within When the size of the dent or cut or

gouge which there is a cut or gouge. gouge exceeds the dimensions for
rejection as an individual defect.
Crack A split or rift in the cylinder shell. All.
Lamination Layering of the material within the All.
cylinder wall appearing as a
discontinuity, crack, lap or bulge at
the surface.

Appearance (e.g. sharp dent) and location (e.g. on shoulder of the cylinder) also play a part in the evaluation of

dent severity.
Table B.2 — Carbon steel cylinders - Corrosion on the cylinder wall
Defects Description Rejection limit
Isolated corrosion pits A pitting of metal occurring in See B.2.
isolated areas at a concentration
not greater than 1 pit per 500 mm2
of surface area.
Area corrosion Reduction in wall thickness over an See B.2.
area not exceeding 20 % of the
cylinder surface.
General corrosion A reduction in wall thickness over See B.2.
an area exceeding 20 % of the
cylinder surface.
Chain pitting or line or A series of pits or corroded cavities See B.2.
channel corrosion of limited width along the length or
around the cylinder circumference.
Crevice corrosion Crevice corrosion occurs in the area See B.2.
of the intersection of the foot ring
or shroud with the cylinder.
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oSIST prEN 1439:2020
prEN 1439:2020 (E)
Table B.3 — Carbon steel cylinders – Other defects
Defects Description Rejection limit
Depressed bung Damage to the bung which has All or a limited level of
altered the profile of the cylinder. depression/alignment deviation as
agreed with the competent
authority.
Arc or torch burns Burning of the cylinder base metal, a All.
hardened heat affected zone, the
additi
...

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