Plastics piping systems for hot and cold water installations - Polypropylene (PP) - Part 7: Guidance for the assessment of conformity (ISO/TS 15874-7:2018)

This document gives requirements and guidance for the assessment of conformity of compounds, products, and assemblies in accordance with the applicable part(s) of ISO 15874 intended to be included in the manufacturer's quality plan as part of the quality management system and for the establishment of certification procedures.
NOTE       In order to help the reader, a basic test matrix is given in Annex A.
In conjunction with the other parts of ISO 15874 (see Foreword), this document is applicable to polypropylene (PP) piping systems intended to be used for hot and cold water installations within buildings for the conveyance of water, whether or not intended for human consumption (domestic systems) and for heating systems, under design pressures and temperatures appropriate to the class of application (see ISO 15874-1:2013, Table 1).

Kunststoff-Rohrleitungssysteme für die Warm- und Kaltwasserinstallation - Polypropylen (PP) - Teil 7: Empfehlungen für die Beurteilung der Konformität (ISO/TS 15874-7:2018)

Dieses Dokument enthält Anforderungen und Empfehlungen für die Beurteilung der Konformität von Formmassen, Produkten und Bauteilkombinationen, die, in Übereinstimmung mit den/dem entsprechenden Teil(en) von ISO 15874, als Teil des Qualitätsmanagementsystems im Qualitätssicherungsplan des Herstellers und für die Erstellung von Zertifizierungsverfahren vorgesehen sind.
ANMERKUNG   Als Hilfe für den Leser enthält Anhang A eine grundlegende Prüfmatrix.
Zusammen mit den übrigen Teilen von ISO 15874 (siehe Vorwort) gilt dieses Dokument für Rohrleitungssysteme aus Polypropylen (PP), die in der Warm- und Kaltwasserinstallation innerhalb von Gebäuden für die Durchleitung von Trink- oder Brauchwasser (Hausinstallation) sowie für Heizungsanlagen unter Berücksichtigung des betreffenden Systembetriebsdruckes und der für die jeweilige Anwendungsklasse geltenden Temperaturen (siehe ISO 15874 1:2013, Tabelle 1) eingesetzt werden.

Systèmes de canalisations en plastique pour les installations d'eau chaude et froide - Polypropylène (PP) - Partie 7: Guide pour l'évaluation de la conformité (ISO/TS 15874-7:2018)

Cevni sistemi iz polimernih materialov za napeljave z vročo in hladno vodo - Polipropilen (PP) - 7. del: Navodilo za ugotavljanje skladnosti (ISO/TS 15874-7:2018)

Ta del standarda ISO 15874 vsebuje navodila za ugotavljanje skladnosti materialov, izdelkov in sestavov z ustreznimi deli standarda ISO 15874, ki naj bi se vključila v poslovnik kakovosti proizvajalca kot del sistema vodenja kakovosti, vsebuje pa tudi navodila za vzpostavitev postopka certificiranja. Ta tehnična specifikacija se v povezavi z drugimi deli standarda ISO 15874 (glej predgovor) uporablja za cevne sisteme iz polipropilena (PP), ki se uporabljajo za napeljave z vročo in hladno vodo za prenos pitne in nepitne vode v stavbah (gospodinjski sistemi), ter za sisteme ogrevanja glede na predvidene tlake in temperature, ki ustrezajo razredu uporabe (glej tabelo 1 v standardu ISO 15874:2013).

General Information

Status
Published
Publication Date
18-Dec-2018
Current Stage
6060 - Definitive text made available (DAV) - Publishing
Due Date
19-Dec-2018
Completion Date
19-Dec-2018

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SIST-TS CEN ISO/TS 15874-7:2019
01-marec-2019
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SIST-TS CEN ISO/TS 15874-7:2004
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Plastics piping systems for hot and cold water installations - Polypropylene (PP) - Part 7:

Guidance for the assessment of conformity (ISO/TS 15874-7:2018)

Kunststoff-Rohrleitungssysteme für die Warm- und Kaltwasserinstallation - Polypropylen

(PP) - Teil 7: Empfehlungen für die Beurteilung der Konformität (ISO/TS 15874-7:2018)

Systèmes de canalisations en plastique pour les installations d'eau chaude et froide -

Polypropylène (PP) - Partie 7: Guide pour l'évaluation de la conformité (ISO/TS 15874-

7:2018)
Ta slovenski standard je istoveten z: CEN ISO/TS 15874-7:2018
ICS:
23.040.20 Cevi iz polimernih materialov Plastics pipes
91.140.60 Sistemi za oskrbo z vodo Water supply systems
SIST-TS CEN ISO/TS 15874-7:2019 en

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

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SIST-TS CEN ISO/TS 15874-7:2019
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SIST-TS CEN ISO/TS 15874-7:2019
CEN ISO/TS 15874-7
TECHNICAL SPECIFICATION
SPÉCIFICATION TECHNIQUE
December 2018
TECHNISCHE SPEZIFIKATION
ICS 23.040.01; 91.140.60; 03.120.20 Supersedes CEN ISO/TS 15874-7:2003
English Version
Plastics piping systems for hot and cold water installations
- Polypropylene (PP) - Part 7: Guidance for the assessment
of conformity (ISO/TS 15874-7:2018)

Systèmes de canalisations en plastique pour les Kunststoff-Rohrleitungssysteme für die Warm- und

installations d'eau chaude et froide - Polypropylène Kaltwasserinstallation - Polypropylen (PP) - Teil 7:

(PP) - Partie 7: Guide pour l'évaluation de la Empfehlungen für die Beurteilung der Konformität

conformité (ISO/TS 15874-7:2018) (ISO/TS 15874-7:2018)

This Technical Specification (CEN/TS) was approved by CEN on 26 October 2018 for provisional application.

The period of validity of this CEN/TS is limited initially to three years. After two years the members of CEN will be requested to

submit their comments, particularly on the question whether the CEN/TS can be converted into a European Standard.

CEN members are required to announce the existence of this CEN/TS in the same way as for an EN and to make the CEN/TS

available promptly at national level in an appropriate form. It is permissible to keep conflicting national standards in force (in

parallel to the CEN/TS) until the final decision about the possible conversion of the CEN/TS into an EN is reached.

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

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

Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,

Turkey and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels

© 2018 CEN All rights of exploitation in any form and by any means reserved Ref. No. CEN ISO/TS 15874-7:2018 E

worldwide for CEN national Members.
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CEN ISO/TS 15874-7:2018 (E)
Contents Page

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

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SIST-TS CEN ISO/TS 15874-7:2019
CEN ISO/TS 15874-7:2018 (E)
European foreword

This document (CEN ISO/TS 15874-7:2018) 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.

Attention is drawn to the possibility that some of the elements of this document may be the subject of

patent rights. CEN shall not be held responsible for identifying any or all such patent rights.

This document supersedes CEN ISO/TS 15874-7:2003.

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, Former Yugoslav Republic of Macedonia,

France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta,

Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,

Turkey and the United Kingdom.
Endorsement notice

The text of ISO/TS 15874-7:2018 has been approved by CEN as CEN ISO/TS 15874-7:2018 without any

modification.
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SIST-TS CEN ISO/TS 15874-7:2019
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SIST-TS CEN ISO/TS 15874-7:2019
TECHNICAL ISO/TS
SPECIFICATION 15874-7
Second edition
2018-11
Plastics piping systems for hot
and cold water installations —
Polypropylene (PP) —
Part 7:
Guidance for the assessment of
conformity
Systèmes de canalisations en plastique pour les installations d'eau
chaude et froide — Polypropylène (PP) —
Partie 7: Guide pour l'évaluation de la conformité
Reference number
ISO/TS 15874-7:2018(E)
ISO 2018
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SIST-TS CEN ISO/TS 15874-7:2019
ISO/TS 15874-7:2018(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2018

All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may

be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting

on the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address

below or ISO’s member body in the country of the requester.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: +41 22 749 01 11
Fax: +41 22 749 09 47
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland
ii © ISO 2018 – All rights reserved
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ISO/TS 15874-7:2018(E)
Contents Page

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

Introduction ..................................................................................................................................................................................................................................v

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

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

3 Terms and definitions ..................................................................................................................................................................................... 1

4 Abbreviated terms .............................................................................................................................................................................................. 4

5 General ............................................................................................................................................................................................................................ 5

6 Testing and inspection ................................................................................................................................................................................... 5

6.1 Grouping ....................................................................................................................................................................................................... 5

6.1.1 General...................................................................................................................................................................................... 5

6.1.2 Pressure groups ................................................................................................................................................................ 5

6.1.3 Size groups ............................................................................................................................................................................ 5

6.1.4 Fitting groups ..................................................................................................................................................................... 6

6.2 Type testing (TT) .................................................................................................................................................................................. 6

6.3 Batch release tests (BRT) ............................................................................................................................................................12

6.4 Process verification tests (PVT) ............................................................................................................................................13

6.5 Audit tests (AT) ....................................................................................................................................................................................14

6.6 Indirect tests (IT) ...............................................................................................................................................................................15

6.7 Test records.............................................................................................................................................................................................15

Annex A (informative) Basic test matrix ........................................................................................................................................................16

Bibliography .............................................................................................................................................................................................................................17

© ISO 2018 – All rights reserved iii
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ISO/TS 15874-7:2018(E)
Foreword

ISO (the International Organization for Standardization) is a worldwide federation of national standards

bodies (ISO member bodies). The work of preparing International Standards is normally carried out

through ISO technical committees. Each member body interested in a subject for which a technical

committee has been established has the right to be represented on that committee. International

organizations, governmental and non-governmental, in liaison with ISO, also take part in the work.

ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of

electrotechnical standardization.

The procedures used to develop this document and those intended for its further maintenance are

described in the ISO/IEC Directives, Part 1. In particular the different approval criteria needed for the

different types of ISO documents should be noted. This document was drafted in accordance with the

editorial rules of the ISO/IEC Directives, Part 2 (see www .iso .org/directives).

Attention is drawn to the possibility that some of the elements of this document may be the subject of

patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of

any patent rights identified during the development of the document will be in the Introduction and/or

on the ISO list of patent declarations received (see www .iso .org/patents).

Any trade name used in this document is information given for the convenience of users and does not

constitute an endorsement.

For an explanation on the voluntary nature of standards, the meaning of ISO specific terms and

expressions related to conformity assessment, as well as information about ISO's adherence to the

World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT) see the following

URL: www .iso .org/iso/foreword .html.

This document was prepared by the European Committee for Standardization (CEN) Technical

Committee CEN/TC 155, Plastics piping systems and ducting systems, in collaboration with ISO Technical

Committee TC 138, Plastics pipes, fittings and valves for the transport of fluids, Subcommittee SC 2,

Plastics pipes and fittings for water supplies, in accordance with the Agreement on technical cooperation

between ISO and CEN (Vienna Agreement).

This second edition cancels and replaces the first edition (ISO/TS 15874-7:2003), which has been

technically revised.
The main changes compared to the previous edition are as follows:

— Addition of new definitions of the terms “material”, compound” and “material grade”;

— Revision of 6.2 “Type testing (TT)” with a special focus on Table 4.
A list of all parts in the ISO 15874 series can be found on the ISO website.

Any feedback or questions on this document should be directed to the user’s national standards body. A

complete listing of these bodies can be found at www .iso .org/members .html.
iv © ISO 2018 – All rights reserved
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Introduction

This document can be used to support elaboration of national third party certification procedures for

products conforming to the applicable part(s) of ISO 15874.

This document is a part of a System Standard for plastics piping systems of a particular material for a

specified application. There are a number of such System Standards.

At the date of publication of this document, System Standards for piping systems of other plastics

materials used for the same application are the following:

— ISO 15875, Plastics piping systems for hot and cold water installations — Cross-linked polyethylene (PE-X)

— ISO 15876, Plastics piping systems for hot and cold water installations — Polybutene (PB)

— ISO 15877, Plastics piping systems for hot and cold water installations — Chlorinated poly(vinyl

chloride) (PVC-C)

— ISO 21003, Multilayer piping systems for hot and cold water installations inside buildings

— ISO 22391, Plastics piping systems for hot and cold water installations — Polyethylene of raised

temperature resistance (PE-RT)

They are supported by separate standards on test methods to which references are made throughout

the System Standard.

The System Standards are consistent with general standards on functional requirements and on

recommended practice for installation.

Figures 1 and 2 are intended to provide general information on the concept of testing and organisation

of those tests used for the purpose of the assessment of conformity. For each type of test, i.e. type testing

(TT), batch release test (BRT), process verification test (PVT), and audit test (AT), this document details

the applicable characteristics to be assessed as well as the frequency and sampling of testing.

A typical scheme for the assessment of conformity of materials, compounds, pipes, fittings, valves,

joints or assemblies by product manufacturers is given in Figure 1.

Figure 1 — Typical scheme for the assessment of conformity by a product manufacturer

A typical scheme for the assessment of conformity of compounds, pipes, fittings, joints or assemblies by

manufacturers, including certification, is given in Figure 2.
© ISO 2018 – All rights reserved v
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Figure 2 — Typical scheme for the assessment of conformity by a product manufacturer,

including certification
vi © ISO 2018 – All rights reserved
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SIST-TS CEN ISO/TS 15874-7:2019
TECHNICAL SPECIFICATION ISO/TS 15874-7:2018(E)
Plastics piping systems for hot and cold water
installations — Polypropylene (PP) —
Part 7:
Guidance for the assessment of conformity
1 Scope

This document gives requirements and guidance for the assessment of conformity of compounds,

products, and assemblies in accordance with the applicable part(s) of ISO 15874 intended to be included

in the manufacturer’s quality plan as part of the quality management system and for the establishment

of certification procedures.
NOTE In order to help the reader, a basic test matrix is given in Annex A.

In conjunction with the other parts of ISO 15874 (see Foreword), this document is applicable to

polypropylene (PP) piping systems intended to be used for hot and cold water installations within

buildings for the conveyance of water, whether or not intended for human consumption (domestic

systems) and for heating systems, under design pressures and temperatures appropriate to the class of

application (see ISO 15874-1:2013, Table 1).
2 Normative references

The following documents are referred to in the text in such a way that some or all of their content

constitutes requirements of this document. For dated references, only the edition cited applies. For

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

ISO 15874-1:2013, Plastics piping systems for hot and cold water installations — Polypropylene (PP) —

Part 1: General

ISO 15874-2:2013, Plastics piping systems for hot and cold water installations — Polypropylene (PP) —

Part 2: Pipes

ISO 15874-3:2013, Plastics piping systems for hot and cold water installations — Polypropylene (PP) —

Part 3: Fittings

ISO 15874-5:2013, Plastics piping systems for hot and cold water installations — Polypropylene (PP) —

Part 5: Fitness for purpose of the system
3 Terms and definitions

For the purposes of this document, the term and definitions in ISO 15874-1 and ISO 15874-3 and the

following 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
© ISO 2018 – All rights reserved 1
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ISO/TS 15874-7:2018(E)
3.1
certification body

impartial body, governmental or non-governmental, possessing the necessary competence and

responsibility to carry out certification of conformity according to given rules of procedure and

management
[2]

Note 1 to entry: A certification body is preferably compliant with ISO/IEC 17065 .

3.2
inspection body

body that performs examination of a product, process, service, or installation or their design and

determination of its conformity with specific requirements or, on the basis of professional judgement,

with general requirements

Note 1 to entry: An inspection body can be an organization, or part of an organization.

[3]
Note 2 to entry: An inspection body is preferably compliant with ISO/IEC 17020 .
3.3
testing laboratory

laboratory which measures, tests, calibrates or otherwise determines the characteristics of the

performance of materials and products
[4]

Note 1 to entry: A testing laboratory is preferably compliant with ISO/IEC 17025 .

3.4
quality management system
part of a management system with regard to quality
[SOURCE: ISO 9000:2015, 3.5.4]
[6]

Note 1 to entry: Requirements for quality management systems are given in ISO 9001 .

3.5
quality plan

document setting out the specific quality practices, resources and sequence of activities relevant to a

particular product or range of products
3.6
type testing

testing performed to prove that the compound (3.13), component (3.21), product (3.16), joint (3.22) or

assembly (3.23) is capable of conforming to the requirements given in the relevant standard

Note 1 to entry: The type test results remain valid until there is a change in the compound (3.13) or product (3.16)

or assembly (3.23) provided that the process verification tests are done regularly.

3.7
batch release test
BRT

test performed by or on behalf of the manufacturer on a batch of compound (3.13), components (3.21) or

products (3.16), which has to be satisfactorily completed before the batch can be released

2 © ISO 2018 – All rights reserved
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3.8
process verification test
PVT

test performed by or on behalf of the product manufacturer on compounds (3.13), components (3.21),

products (3.16) or joints (3.22) at specific intervals to confirm that the process continues to be capable

of producing components (3.21) and products (3.16) which conform to the requirements given in the

relevant standard

Note 1 to entry: Such tests are not required to release batches of materials (3.12), compound (3.13), components

(3.21) or products (3.16) and are carried out as a measure of process control.
3.9
audit test

test performed by a test laboratory on behalf of an inspection body (3.2) or certification body (3.1) to

confirm that the material, compound (3.13), components (3.21), product (3.16), joint (3.22) or assembly

(3.23) continues to conform to the requirements given in the relevant standard and to provide

information to assess the effectiveness of the quality management system (3.4)
3.10
indirect test

test performed by or on behalf of the manufacturer, different from that specified test for that particular

characteristic, having previously verified its correlation with the specified test

3.11
witness test

test accepted by an inspection or a certification body (3.1) for type testing (3.6) and/or audit testing,

which is carried out by or on behalf of the manufacturer and supervised by a representative of the

inspection or certification body (3.1), qualified in testing
3.12
material

composition grouped by specific families, expressed by generic names used in various standards, e.g.

PP-H, PB-R, PE-RT Type II, PE-X a
3.13
compound

clearly defined homogenous mixture of the polymer with additives, i.e. antioxidants, pigments,

stabilizers and others, at a dosage level necessary for the processing and the intended use of the final

product (3.16)
3.14
material grade
material (3.12) with a defined specification from a material manufacturer
3.15
batch of material grade

clearly identified quantity of a given homogeneous material (3.12) or compound (3.13) manufactured

under uniform conditions and defined and identified by the material/compound manufacturer

3.16
product

pipe, fitting, or valve of a clearly identified type intended to be a part of a piping system which the

manufacturer puts on the market
© ISO 2018 – All rights reserved 3
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3.17
product batch

clearly identified collection of units or products (3.16), manufactured consecutively or continuously

under the same conditions, using the same compounds (3.13) conforming to the same specifications

Note 1 to entry: The production batch is defined and identified by the product manufacturer.

3.18
lot
clearly identifiable sub-division of a batch for inspection purposes
3.19
sample

one or more units or products (3.16) drawn from the same production batch or lot (3.18), selected at

random without regard to their quality
Note 1 to entry: The number of products (3.16) in the sample is the sample size.
3.20
group

collection of similar components (3.21) or products (3.16) from which samples (3.19) are selected for

testing purposes
3.21
component

product (3.16) manufactured out of a specific compound (3.13), brought to the market as part of another

product (3.16) or as a spare part

Note 1 to entry: For drinking water application, components may be considered as products (3.16) and be

individually approved (e.g. o-ring, gasket) or they are tested as integral part of a product (3.16) (e.g. in a valve).

3.22
joint
connection between two or more products (3.16)
3.23
assembly
assembled product
product consisting of two or more parts
3.24
sampling plan

specific plan which defines the test and the number of units or products (3.16) or assemblies (3.23) to be

inspected
3.25
product type
generic description of a product (3.16)

EXAMPLE A pipe or fitting or valve or their main parts, of the same design, from a particular compound (3.13).

3.26
cavity
space within a mould to be filled to form the moulded product

EXAMPLE That part of an injection mould which gives the form to the injection-moulded product.

4 Abbreviated terms

To avoid misunderstanding, the abbreviations in this clause are defined as being the same in each

language. For the same reason, the terms are given in the three languages, English, French and German.

4 © ISO 2018 – All rights reserved
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ISO/TS 15874-7:2018(E)
EN FR DE
AT audit test essai d’audit Überwachungsprüfung

BRT batch release test essai de libération de campagne de fab- Freigabeprüfung einer Charge

rication
IT indirect test essai indirect indirekte Prüfung

PVT process verification essai de vérification du procédé de fab- Prozessüberprüfung

test rication
TT type test essai de type Typprüfung
WT witness testing essai témoin Prüfung unter Aufsicht
5 General

Compounds, products and assemblies shall conform to the requirements given in ISO 15874 (all parts).

Products and assemblies shall be produced by the manufacturer under a quality management system

which includes a quality plan.

For the effect on water quality, attention is drawn to the requirements of national regulations.

6 Testing and inspection
6.1 Grouping
6.1.1 General
For the purposes of this document, the groups specified in 6.1.2 to 6.1.4 apply.
6.1.2 Pressure groups
Two pressure groups are defined, as given in Table 1.
Table 1 — Pressure groups
Pressure group Operating pressure, p
bar
1 4; 6
2 8; 10
6.1.3 Size groups
Two size groups are defined for pipes and fittings, as given in Table 2.
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ISO/TS 15874-7:2018(E)
Table 2 — Size groups
Size group Nominal diameter, d
1 10 ≤ d ≤ 63
2 63 < d ≤ 160
3 d > 160
6.1.4 Fitting groups

Two groups of fittings each having a similar design are defined, as given in Table 3.

Table 3 — Fitting groups
Fitting group Type of fitting
1 Elbows, tees, reducers, couplers, end caps
2 Unions, flange adaptors, transition fittings, adaptor pieces and/or their
plastics parts, and others
6.2 Type testing (TT)

Relevant TTs shall be carried out on new systems and whenever there is a change in design, compound,

production site or production method, other than routine in-process adjustments, and/or whenever

there is an extension of the product range.

TTs shall demonstrate that the products conform to all requirements for the characteristics given in

Table 5 to Table 7.

Conditions considered as leading to a change of compound (M) are given in Table 4. The dosage level

of ingredients of the compound shall not exceed the tolerance bands given in Table 4. The values

(see Table 4) shall be specified in the manufacturer’s quality plan. The relevant characteristics to be

tested in case of change of compound are given in Tables 5, 6 and 7 in columns M1A to M2C, as applicable.

A change in the supplier of stabilizer or other additives does not necessarily constitute a change in

compound (see Table 4, footnote ).

A change of material of metal fittings without any change of design in those areas, which are relevant to

the joint performance, does not require testing as specified in ISO 15874-5.
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Table 4 — Conditions considered to lead to a change of compound (M)
Conditions A B C
Polymer used Thermal stabilizer Other additives, e.g.
in the compound pigments etc.
to manufacture a
product
a b

M1 Change of material — Full TT of the product — Full TT of the product — Reduced TT of the

grade product
— System test required — No system test
required — No system tests
required
M2 Change of amount — Reduced TT of the — Reduced TT of the
of any stabilizer product product
or other additives
— No system test — No system tests
greater than ±30 %
required required

Stabilizer, pigments or other additives with identical CAS number are considered to be identical substances.

The case of adding pigments to fully stabilized natural (not pigmented) material grade is covered by M1C.

Not applicable.
Stabilizer which affects the thermal stability of the compound.

Changes of the amount of stabilizer and other additives equal or less than ±30 % requires no testing.

For the purposes of
...

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