Rubber and plastics hoses and hose assemblies - Guidelines for selection, storage, use and maintenance (ISO 8331:2014)

ISO 8331:2014 sets out recommendations designed to maintain rubber and plastics hoses and hose assemblies, prior to use, in a condition as close as possible to the condition they were in when they were received and to obtain the expected service life.

Gummi- und Kunststoffschläuche und -schlauchleitungen - Richtlinien für die Auswahl, Lagerung, Verwendung und Wartung (ISO 8331:2014)

Dieses Dokument gilt für die folgenden Maschinengruppen:
-   Verpackungsmaschinen für die Verwendung durch Bedienpersonen an Arbeitsplätzen nach EN 415-1.
Dieses Dokument gilt, wenn Maschinen oder Gefährdungen in den spezifischeren Normen der EN 415 nicht behandelt sind oder diese Normen auf dieses Dokument verweisen.
ANMERKUNG 1   Für Maschinen, die in öffentlich zugänglichen Bereichen verwendet werden, können andere oder zusätz¬liche Anforderungen gelten. Der Hersteller sollte eine zusätzliche Risikobewertung durchführen.
Dieses Dokument behandelt die Sicherheitsanforderungen für Gestaltung, Konstruktion, Aufstellung, Inbetrieb¬nahme, Betrieb, Einstellung, Instandhaltung und Reinigung von Verpackungsmaschinen.
Der Umfang der behandelten Gefährdungen, Gefährdungssituationen und Gefährdungsereignisse ist in Abschnitt 4 dargelegt.
ANMERKUNG 2   Die Gefährdungen an einer spezifischen Maschine können variieren in Abhängigkeit von ihrer Funktions¬weise, von Typ, Größe und Masse des Produktes, vom Packstoff, von an der Maschine angebrachtem Zubehör sowie von der Umgebung, in der die Maschine verwendet wird. Weist die Maschine Gefährdungen auf, die in der vorlie¬genden Norm nicht behandelt sind, sollte der Hersteller diese Gefährdungen anhand der in EN ISO 14121 1 beschrie¬benen Grundsätze bewerten.
Ausnahmen
Diese Norm gilt nicht für die folgenden Maschinen:
-   Maschinen, die vor dem Datum der Veröffentlichung dieses Dokuments durch den CEN hergestellt wurden.
Diese Norm behandelt nicht die folgenden Gefährdungen:
-   die Verwendung von Verpackungsmaschinen in explosionsfähigen Atmosphären;
-   die Gefährdungen für Gesundheit, Sicherheit oder Hygiene in Zusammenhang mit den Produkten, die mög¬licher¬weise auf den Maschinen verarbeitet werden, allerdings sind allgemeine Hinweise dazu ange-geben;
-   Gefährdungen, die mit elektromagnetischen Störaussendungen von Verpackungsmaschinen zusammen-hängen können;
-   Gefährdungen, die mit der Außerbetriebnahme von Verpackungsmaschinen zusammenhängen können.

Tuyaux et flexibles en caoutchouc et en plastique - Lignes directrices pour la sélection, le stockage, l'utilisation et la maintenance (ISO 8331:2014)

L'ISO 8331:2014 établit des recommandations prévues pour conserver les tuyaux et assemblages flexibles en caoutchouc et en plastique, avant leur utilisation, dans un état aussi proche que possible de leur état lors de la réception et pour obtenir la durée de vie prévue.

Gumene in polimerne cevi ter cevni priključki - Smernice za izbiro, skladiščenje, uporabo in vzdrževanje (ISO 8331:2014)

EN ISO 8331 določa smernice, oblikovane za vzdrževanje gumenih in polimernih cevi ter cevnih priključkov pred uporabo v stanju, ki je čim bolj podobno stanju, v katerem so bili ob prejetju, ter za doseganje njihove pričakovane življenjske dobe.

General Information

Status
Withdrawn
Publication Date
01-Apr-2014
Withdrawal Date
29-Nov-2016
Current Stage
9960 - Withdrawal effective - Withdrawal
Completion Date
30-Nov-2016

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SLOVENSKI STANDARD
SIST EN ISO 8331:2014
01-julij-2014
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SIST EN ISO 8331:2012

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Rubber and plastics hoses and hose assemblies - Guidelines for selection, storage, use

and maintenance (ISO 8331:2014)

Gummi- und Kunststoffschläuche und -schlauchleitungen - Richtlinien für die Auswahl,

Lagerung, Verwendung und Wartung (ISO 8331:2014)

Tuyaux et flexibles en caoutchouc et en plastique - Lignes directrices pour la sélection, le

stockage, l'utilisation et la maintenance (ISO 8331:2014)
Ta slovenski standard je istoveten z: EN ISO 8331:2014
ICS:
83.140.40 Gumene cevi Hoses
SIST EN ISO 8331:2014 en

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

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SIST EN ISO 8331:2014
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SIST EN ISO 8331:2014
EUROPEAN STANDARD
EN ISO 8331
NORME EUROPÉENNE
EUROPÄISCHE NORM
April 2014
ICS 23.040.70 Supersedes EN ISO 8331:2011
English Version
Rubber and plastics hoses and hose assemblies - Guidelines for
selection, storage, use and maintenance (ISO 8331:2014)

Tuyaux et flexibles en caoutchouc et en plastique - Lignes Gummi- und Kunststoffschläuche und -schlauchleitungen -

directrices pour la sélection, le stockage, l'utilisation et la Richtlinien für die Auswahl, Lagerung, Verwendung und

maintenance (ISO 8331:2014) Wartung (ISO 8331:2014)
This European Standard was approved by CEN on 15 February 2014.

CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European

Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national

standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN member.

This European Standard exists in three official versions (English, French, German). A version in any other language made by translation

under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management Centre has the same

status as the official versions.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,

Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,

Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United

Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels

© 2014 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 8331:2014 E

worldwide for CEN national Members.
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SIST EN ISO 8331:2014
EN ISO 8331:2014 (E)
Contents Page

Foreword ..............................................................................................................................................................3

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SIST EN ISO 8331:2014
EN ISO 8331:2014 (E)
Foreword

This document (EN ISO 8331:2014) has been prepared by Technical Committee ISO/TC 45 “Rubber and

rubber products” in collaboration with Technical Committee CEN/TC 218 “Rubber and plastics hoses and

hose assemblies” 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 2014, and conflicting national standards shall be withdrawn at

the latest by October 2014.

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 ISO 8331:2011.

According to the CEN-CENELEC Internal Regulations, the national standards organizations of the following

countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech

Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece,

Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal,

Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom.

Endorsement notice

The text of ISO 8331:2014 has been approved by CEN as EN ISO 8331:2014 without any modification.

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SIST EN ISO 8331:2014
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SIST EN ISO 8331:2014
INTERNATIONAL ISO
STANDARD 8331
Third edition
2014-04-01
Rubber and plastics hoses and hose
assemblies — Guidelines for selection,
storage, use and maintenance
Tuyaux et flexibles en caoutchouc et en plastique — Lignes directrices
pour la sélection, le stockage, l’utilisation et la maintenance
Reference number
ISO 8331:2014(E)
ISO 2014
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SIST EN ISO 8331:2014
ISO 8331:2014(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2014

All rights reserved. Unless otherwise specified, 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.
ISO copyright office
Case postale 56 • CH-1211 Geneva 20
Tel. + 41 22 749 01 11
Fax + 41 22 749 09 47
E-mail copyright@iso.org
Web www.iso.org
Published in Switzerland
ii © ISO 2014 – All rights reserved
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SIST EN ISO 8331:2014
ISO 8331:2014(E)
Contents Page

Foreword ........................................................................................................................................................................................................................................iv

1 Scope ................................................................................................................................................................................................................................. 1

2 Normative references ...................................................................................................................................................................................... 1

3 General recommendations ........................................................................................................................................................................ 1

3.1 Selection criteria.................................................................................................................................................................................... 1

3.2 Storage conditions ............................................................................................................................................................................... 2

3.3 Use and maintenance ........................................................................................................................................................................ 4

4 Additional recommendations for specific applications............................................................................................... 6

4.1 General ........................................................................................................................................................................................................... 6

4.2 Welding and gas-cutting hoses .................................................................................................................................................. 6

4.3 Steam hoses ............................................................................................................................................................................................... 6

4.4 Hoses for the conveyance of foodstuffs and drinking water............................................................................ 7

4.5 Hoses for the conveyance of abrasive products .......................................................................................................... 7

4.6 Hoses for the conveyance of corrosive or aggressive products .................................................................... 7

4.7 Hoses for the conveyance of flammable products .................................................................................................... 7

4.8 Automotive hoses ................................................................................................................................................................................. 8

4.9 Hydraulic hoses ...................................................................................................................................................................................... 8

4.10 Fire-fighting hoses ............................................................................................................................................................................... 8

4.11 Oil-industry hoses and hose assemblies ........................................................................................................................10

Bibliography .............................................................................................................................................................................................................................13

© ISO 2014 – All rights reserved iii
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SIST EN ISO 8331:2014
ISO 8331:2014(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. 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. 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 meaning of ISO specific terms and expressions related to conformity

assessment, as well as information about ISO’s adherence to the WTO principles in the Technical Barriers

to Trade (TBT) see the following URL: Foreword - Supplementary information

The committee responsible for this document is ISO/TC 45, Rubber and rubber products, Subcommittee

SC 1, Hoses (rubber and plastics).

This third edition cancels and replaces the second edition (ISO 8331:2007), which has been technically

revised. The following principal changes have been made:

— Subclause 3.2.2: reference to ISO 2230 for long-term storage was deleted and recommendations for

bulk hoses and hose assemblies were added;
— Subclause 3.2.3: “hose assembly” was added;
— Subclause 3.2.4.: requirement for polyurethane products was added;

— Subclause 4.3: the requirement to examine the lining of steam hoses before re-use after a storage

period was added;

— Subclause 4.9: reference to ISO/TS 17165-2:2013, Clause 9 was added and 9.2.2 of that Technical

Specification was copied to specify conditions for long-term storage of hydraulic hoses;

— Bibliography: reference to the OCIMF Guide was updated.
iv © ISO 2014 – All rights reserved
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SIST EN ISO 8331:2014
INTERNATIONAL STANDARD ISO 8331:2014(E)
Rubber and plastics hoses and hose assemblies —
Guidelines for selection, storage, use and maintenance
1 Scope

This International Standard sets out recommendations designed to maintain rubber and plastics hoses

and hose assemblies, prior to use, in a condition as close as possible to the condition they were in when

they were received and to obtain the expected service life.

NOTE It is intended that this International Standard be used in conjunction with any applicable national

statutory regulations.
2 Normative references

The following documents, in whole or in part, are normatively referenced in this document and are

indispensable for its application. For dated references, only the edition cited applies. For undated

references, the latest edition of the referenced document (including any amendments) applies.

ISO 1402, Rubber and plastics hoses and hose assemblies — Hydrostatic testing
ISO 2230, Rubber products — Guidelines for storage

ISO 8031, Rubber and plastics hoses and hose assemblies — Determination of electrical resistance and

conductivity

ISO/TS 17165-2:2013, Hydraulic fluid power — Hose assemblies — Part 2: Practices for hydraulic hose

assemblies
3 General recommendations
3.1 Selection criteria

It is in the best interests of the user to select hoses or hose assemblies complying with national or

international standards whenever such standards exist for the intended application. For applications

outside the scope of such standards, needing special requirements or for which the necessary information

is not available, the hose manufacturer or trade association should be consulted.

The following points should be taken into consideration when selecting a hose or hose assembly for a

specific application:
a) Operational environment:
— ambient temperature;
— atmospheric conditions;
— contact with chemically aggressive liquids;
— contact with other deleterious media.
b) Media conveyed:
— liquid;
— gaseous;
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SIST EN ISO 8331:2014
ISO 8331:2014(E)
— solids;
— combinations of the above.
c) Method of conveyance:
— pressure (including rate of flow);
— suction (including rate of flow);
— gravity (including rate of flow);
— assisted (mixture of solid/fluid, solid/air).
d) Operating conditions:
— pressure and temperature of product conveyed;
— frequency of use.
e) Installation:
— degree of curvature (minimum bend radius);
— vibration of system;
— risk of damage by impact and abrasion;
— use of correct type of connection;
— type of movement and frequency.
3.2 Storage conditions
3.2.1 General

During storage, especially for long periods, and when hoses and hose assemblies are exposed to certain

adverse influences, the physical properties of hoses and hose assemblies can undergo changes that may

result in them no longer having the optimum characteristics corresponding to their application when

they are put into service. The storage conditions should be such as will offer maximum protection and

minimize deterioration of the articles during storage.
3.2.2 Storage period

The storage period should be kept to a minimum. Rotation of stock is therefore essential and the “first-in

first-out” rule applied. For long-term storage, the following maximum storage periods are recommended:

— For bulk hoses (without fittings attached) maximum 4 years
— For hose assemblies maximum 2 years

These two periods can be interpreted as consecutive for a maximum storage duration of 6 years (4 years

as bulk hose + 2 years as hose assembly.
3.2.3 Temperature

The storage temperature should be below 25 °C and articles stored away from direct heat sources.

Storage above 25 °C may shorten the life of the hose or hose assembly. Articles should not be subjected to

temperatures over 50 °C or below – 30 °C or to abnormal fluctuations in temperature during the storage

period. See ISO 2230 for information on the effect of higher and lower temperatures on the storage time.

2 © ISO 2014 – All rights reserved
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SIST EN ISO 8331:2014
ISO 8331:2014(E)
3.2.4 Humidity

The relative humidity should not exceed 70 %, or 65 % for polyurethane hose products.

3.2.5 Light

The articles should be stored in a dark place away from sunlight and strong artificial light. If the storage

area has windows or glazed openings, they should be obscured with red, orange or white coverings.

3.2.6 Ozone

Due to the harmful effect of ozone on rubber-based articles, storage areas should not contain equipment

capable of generating ozone, for example mercury vapour lamps or tubes, high-voltage electrical

equipment, electric motors or other equipment likely to cause sparks or electrical discharges.

3.2.7 Environment

Articles should not be placed in contact with certain products or exposed to their vapours, particularly

solvents, oils, greases, acids, disinfectants, etc. Some metals, such as copper, iron and manganese, have

a harmful effect on certain rubber compounds.
3.2.8 Sources of heat

Articles should not be stored in close proximity to heat sources. The distance between the articles and

the heat sources should be sufficient to ensure compliance with the recommendations of 3.2.3.

3.2.9 Electric and magnetic fields

Storage areas should not be in the vicinity of equipment that may generate electric or magnetic fields,

as variations/fluctuations in such fields could induce currents in metallic joints, which in turn generate

heat.
3.2.10 Method of storing

Articles should be stored in such a way that they are not subjected to excessive stress, elongation or

deformation. Contact with sharp, pointed or abrasive objects or surfaces should be avoided, and storage

racks should be provided whenever possible.

Coiled hose or hose assemblies should be stored flat and preferably not stacked. When stacking is

unavoidable, the height of the stack should be restricted so that the articles at the bottom do not suffer

permanent deformation. The hanging of coils on pegs is not recommended. Hoses and hose assemblies

supplied in straight lengths should be stored flat and unbent. End caps should be kept on hoses supplied

with them.
3.2.11 Rodents

Articles should be secure from attack by rodents, and adequate protection should be provided if there

are any risks.
3.2.12 Issue from storage

Care should be taken to ensure that articles issued from stock are in their correct condition and

correspond to their intended application. Identification of the different types in stock is essential. Hose

assemblies which do not have permanent end fittings, i.e. those with clipping/clamping arrangements

that can be adjusted, should be checked to ensure that the end fittings are secure.

© ISO 2014 – All rights reserved 3
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SIST EN ISO 8331:2014
ISO 8331:2014(E)
3.2.13 Return to storage

Before being returned to storage, articles which have been withdrawn from service should be drained

of the substance they have been used to convey. Special care should be exercised with hoses that have

been used to transport chemical, explosive, flammable or corrosive products. After cleaning and before

return to storage, the articles should be examined to establish their suitability for continued use.

3.3 Use and maintenance
3.3.1 Handling

Hoses and hose assemblies should always be handled with care. They should not be dragged over sharp

or abrasive surfaces. They should not be subjected to kinking or flattening, for example by being run

over by vehicles.
3.3.2 Pressure

Articles should not be subjected to pressures, including surge pressures, in excess of the specified

maximum working pressure.
3.3.3 Temperature

Articles should not be used at temperatures, either conveyed-product temperatures or environmental

temperatures, outside the range specified or recommended by the manufacturer.
3.3.4 Products conveyed

Hoses and hose assemblies should only be used for conveying the products for which they are designed.

If there is doubt regarding the suitability, the hose manufacturer should be consulted. When potentially

dangerous (for example toxic, corrosive, explosive or flammable) products are being conveyed,

precautions to minimize the effects of spillage due to leakage s
...

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