SIST EN ISO 16871:2003

SLOVENSKI STANDARD
SIST EN ISO 16871:2003
01-oktober-2003
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SIST EN 1056:1997
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Plastics piping and ducting systems - Plastics pipes and fittings - Method for exposure to
direct (natural) weathering (ISO 16871:2003)
Kunststoff-Rohrleitungs- und Schutzrohrsysteme - Rohre und Formstücke aus
Kunststoffen - Verfahren für die Bewitterung im Freien (ISO 16871:2003)
Systemes de canalisations et de gaines en matieres plastiques - Tubes et raccords en
matieres plastiques - Methode pour l'exposition directe aux intempéries (ISO
16871:2003)
Ta slovenski standard je istoveten z: EN ISO 16871:2003
ICS:
23.040.20 Cevi iz polimernih materialov Plastics pipes
23.040.45 Fitingi iz polimernih Plastics fittings
materialov
SIST EN ISO 16871:2003 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN ISO 16871:2003

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SIST EN ISO 16871:2003
EUROPEAN STANDARD
EN ISO 16871
NORME EUROPÉENNE
EUROPÄISCHE NORM
May 2003
ICS 23.040.20; 23.040.45 Supersedes EN 1056:1996
English version
Plastics piping and ducting systems - Plastics pipes and fittings -
Method for exposure to direct (natural) weathering (ISO
16871:2003)
Systèmes de canalisations et de gaines en matières Kunststoff-Rohrleitungs- und Schutzrohrsysteme - Rohre
plastiques - Tubes et raccords en matières plastiques - und Formstücke aus Kunststoffen - Verfahren für die
Mèthode pour l'exposition directe aux intempéries (ISO Bewitterung im Freien (ISO 16871:2003)
16871:2003)
This European Standard was approved by CEN on 5 May 2003.
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 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 Management Centre has the same status as the official
versions.
CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece,
Hungary, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Slovakia, Spain, Sweden, Switzerland and United
Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: rue de Stassart, 36  B-1050 Brussels
© 2003 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 16871:2003 E
worldwide for CEN national Members.

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SIST EN ISO 16871:2003
EN ISO 16871:2003 (E)
CORRECTED  2003-09-24
Foreword
This document (EN ISO 16871:2003) has been prepared by Technical Committee ISO/TC 138
"Plastics pipes, fittings and valves for the transport of fluids" in collaboration with Technical
Committee CEN/TC 155 "Plastics piping systems and ducting systems", the secretariat of which
is held by NEN.
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 November 2003, and conflicting national
standards shall be withdrawn at the latest by November 2003.
This document supersedes EN 1056:1996.
According to the CEN/CENELEC Internal Regulations, the national standards organizations of
the following countries are bound to implement this European Standard: Austria, Belgium, Czech
Republic, Denmark, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy,
Luxembourg, Malta, Netherlands, Norway, Portugal, Slovakia, Spain, Sweden, Switzerland and
the United Kingdom.
Endorsement notice
The text of ISO 16871:2003 has been approved by CEN as EN ISO 16871:2003 without any
modifications.
NOTE Normative references to International Standards are listed in Annex ZA (normative).
2

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SIST EN ISO 16871:2003
EN ISO 16871:2003 (E)
Annex ZA
(normative)
Normative references to international publications
with their relevant European publications
This European Standard incorporates by dated or undated reference, provisions from other
publications. These normative references are cited at the appropriate places in the text and the
publications are listed hereafter. For dated references, subsequent amendments to or revisions of
any of these publications apply to this European Standard only when incorporated in it by
amendment or revision. For undated references the latest edition of the publication referred to
applies (including amendments).
NOTE Where an International Publication has been modified by common modifications, indicated
by (mod.), the relevant EN/HD applies.
Publication Year Title EN Year
ISO 105-A02 1993 Textiles - Tests for colour fastness - EN 20105-A02 1994
Part A02: Grey scale for assessing
change in colour
ISO 877 1994 Plastics - Methods of exposure to EN ISO 877 1996
direct weathering, to weathering using
glass-filtered daylight, and to
intensified weathering by daylight
using Fresnel mirrors
ISO 2818 1994 Plastics - Preparation of test EN ISO 2818 1996
specimens by machining
3

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SIST EN ISO 16871:2003

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SIST EN ISO 16871:2003

INTERNATIONAL ISO
STANDARD 16871
First edition
2003-05-15


Plastics piping and ducting systems —
Plastics pipes and fittings — Method for
exposure to direct (natural) weathering
Systèmes de canalisations et de gaines en matières plastiques —
Tubes et raccords en matières plastiques — Méthode pour l'exposition
directe aux intempéries




Reference number
ISO 16871:2003(E)
©
ISO 2003

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SIST EN ISO 16871:2003
ISO 16871:2003(E)
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ii © ISO 2003 — All rights reserved

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SIST EN ISO 16871:2003
ISO 16871:2003(E)
Contents Page
Foreword. iv
Introduction . v
1 Scope. 1
2 Normative references . 1
3 Principle . 1
4 Apparatus. 2
5 Test pieces. 5
6 Procedure. 5
7 Test report. 7

© ISO 2003 — All rights reserved iii

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SIST EN ISO 16871:2003
ISO 16871:2003(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 16871 was prepared by Technical Committee ISO/TC 138, Plastics pipes, fittings and valves for the
transport of fluids, Subcommittee SC 5, General properties of pipes, fittings and valves of plastic materials and
their accessories ― Test methods and basic specifications.
iv © ISO 2003 — All rights reserved

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SIST EN ISO 16871:2003
ISO 16871:2003(E)
Introduction
Outdoor exposure tests of the type specified in this International Standard are needed to evaluate the
performance of plastics piping components or materials when exposed to direct sunlight. The results of such
tests should be regarded only as an indication of the effect of exposure to direct weathering by the method
described. Results obtained after exposure for a given time may not be comparable to those obtained after
other exposures of equal time using the same method. When identical materials are exposed at different times
for extended periods of several years, they generally show comparable behaviour after equal exposure
intervals. However, even in long-term tests, the results may be affected by the season in which the tests are
started.
The results of short-term direct-weathering tests can give an indication of the relative outdoor performance,
but should not be used to predict the absolute long-term performance of a pipe, fitting or joint. Even results of
tests carried out for longer than 24 months can show an effect of the season in which the exposure started.
Comparisons of non-full-year exposures will exhibit seasonable effects.
The test method chosen is usually designed to expose the material to the most severe conditions associated
with any particular climate. It should, therefore, be borne in mind that the severity of exposure in actual use is,
in most cases, likely to be less than that specified in this International Standard, and allowance should be
made accordingly when interpreting the results. For example, vertical exposure at 90° from the horizontal is
considerably less severe in its effects on plastics than near-horizontal exposure, particularly in tropical regions,
where the sun is most powerful at high zenith angles.
Surfaces facing away from the equator are much less likely to be degraded than equator-facing surfaces
because they are less exposed to solar radiation. However, the fact that they may remain wet for longer
periods may be of significance for materials affected by moisture.
© ISO 2003 — All rights reserved v

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SIST EN ISO 16871:2003

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SIST EN ISO 16871:2003
INTERNATIONAL STANDARD ISO 16871:2003(E)

Plastics piping and ducting systems — Plastics pipes and
fittings — Method for exposure to direct (natural) weathering
1 Scope
This International Standard specifies a method for exposing plastics pipes and fittings, individually or
assembled, or as pieces therefrom, to natural weathering in order to assess changes.
NOTE 1 The exposure is considered appropriate for evaluating components subject to yard storage prior to installation
and use without further exposure to direct weathering, and is quantified to promote rationalization of exposure doses and
comparability of data.
NOTE 2 For exposures appropriate to tropical or equatorial conditions, attention is drawn to ISO 877.
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 105-A02, Textiles — Tests for colour fastness — Part A
...