CEN/TS 13476-4:2019

SLOVENSKI STANDARD
01-januar-2020
Nadomešča:
SIST-TS CEN/TS 13476-4:2013
Cevni sistemi iz polimernih materialov za odpadno vodo in kanalizacijo, ki delujejo
po težnostnem principu in so položeni v zemljo - Cevni sistemi s strukturirano
steno iz nemehčanega polivinilklorida (PVC-U), polipropilena (PP) in polietilena
(PE) - 4. del: Ugotavljanje skladnosti
Plastics piping systems for non-pressure underground drainage and sewerage -
Structured-wall piping systems of unplasticized poly(vinyl chloride) (PVC-U),
polypropylene (PP) and polyethylene (PE) - Part 4: Assessment of conformity
Kunststoff-Rohrleitungssysteme für erdverlegte drucklose Abwasserkanäle und -
leitungen - Rohrleitungssysteme mit profilierter Wandung aus weichmacherfreiem
Polyvinylchlorid (PVC-U), Polypropylen (PP) und Polyethylen (PE) - Teil 4:
Empfehlungen für die Beurteilung der Konformität
Systèmes de canalisations en plastique pour les branchements et les collecteurs
d'assainissement sans pression enterrés - Systèmes de canalisations à parois
structurées en poly(chlorure de vinyle) non plastifié (PVC-U), polypropylène (PP) et
polyéthylène (PE) - Partie 4 : Partie 4 : Guide pour l'évaluation de la conformité
Ta slovenski standard je istoveten z: CEN/TS 13476-4:2019
ICS:
23.040.05 Cevovodi za zunanje Pipeline and its parts for
sisteme za odpadno vodo in external sewage systems
njihovi deli
91.140.80 Drenažni sistemi Drainage systems
93.030 Zunanji sistemi za odpadno External sewage systems
vodo
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

CEN/TS 13476-4
TECHNICAL SPECIFICATION
SPÉCIFICATION TECHNIQUE
December 2019
TECHNISCHE SPEZIFIKATION
ICS 23.040.20; 93.030 Supersedes CEN/TS 13476-4:2013
English Version
Plastics piping systems for non-pressure underground
drainage and sewerage - Structured-wall piping systems of
unplasticized poly(vinyl chloride) (PVC-U), polypropylene
(PP) and polyethylene (PE) - Part 4: Assessment of
conformity
Systèmes de canalisations en plastique pour les Kunststoff-Rohrleitungssysteme für erdverlegte
branchements et les collecteurs d'assainissement sans drucklose Abwasserkanäle und -leitungen -
pression enterrés - Systèmes de canalisations à parois Rohrleitungssysteme mit profilierter Wandung aus
structurées en poly(chlorure de vinyle) non plastifié weichmacherfreiem Polyvinylchlorid (PVC-U),
(PVC-U), polypropylène (PP) et polyéthylène (PE) - Polypropylen (PP) und Polyethylen (PE) - Teil 4:
Partie 4 : Partie 4 : Guide pour l'évaluation de la Empfehlungen für die Beurteilung der Konformität
conformité
This Technical Specification (CEN/TS) was approved by CEN on 7 October 2019 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, 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.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2019 CEN All rights of exploitation in any form and by any means reserved Ref. No. CEN/TS 13476-4:2019 E
worldwide for CEN national Members.

Contents Page
European Foreword . 3
Introduction . 4
1 Scope . 6
2 Normative references . 6
3 Terms and definitions . 6
4 Abbreviated terms . 10
5 General . 10
6 Testing and inspection . 10
6.1 Material specification PVC-U . 10
6.2 Material specifications PP . 11
6.3 Material specifications PE . 12
6.4 External non-virgin materials - validation . 12
6.5 Grouping . 12
6.5.1 General . 12
6.5.2 Size groups . 12
6.5.3 Fitting groups . 12
6.6 Type testing . 13
6.7 Batch release tests . 17
6.8 Process verification tests . 18
6.9 Audit tests . 20
6.10 Indirect tests . 22
6.11 Test records . 22
Annex A (informative) Survey of test regime . 23
Bibliography . 25

European Foreword
This document (CEN/TS 13476-4:2019) has been prepared by 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/TS 13476-4:2013.
The main change compared to the previous version concerns the compliance with the latest version of
the template for assessment of conformity, including the addition of the new test method for large
diameter pipes.
EN 13476 consists of the following Parts under the general title Plastics piping systems for non-pressure
underground drainage and sewerage — Structured-wall piping systems of unplasticized poly(vinyl chloride)
(PVC-U), polypropylene (PP) and polyethylene (PE):
— Part 1: General requirements and performance characteristics;
— Part 2: Specifications for pipes and fittings with smooth internal and external surface and the system,
Type A;
— Part 3: Specifications for pipes and fittings with smooth internal and profiled external surface and the
system, Type B;
— Part 4: Guidance for the assessment of conformity (the present TS).
According to the CEN/CENELEC Internal Regulations, the national standards organisations of the
following countries are bound to announce this Technical Specification: 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 the United
Kingdom.
Introduction
Figures 1 and 2 are intended to provide general information on the concept of testing and organization
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 compounds/formulations, pipes, fittings, joints or
assemblies by manufacturers is given in Figure 1.

Figure 1 — Typical scheme for the assessment of conformity by a manufacturer
A typical scheme for the assessment of conformity of compounds/formulations, pipes, fittings, joints or
assemblies by manufacturers, including certification, is given in Figure 2.
Figure 2 — Typical scheme for the assessment of conformity by a manufacturer, including
certification
1 Scope
This document gives guidance for the assessment of conformity of materials, products, joints and
assemblies in accordance with the applicable part(s) of EN 13476 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 1 The quality management system is expected to conform to or be no less stringent than the relevant
requirements to EN ISO 9001 [1].
NOTE 2 If third-party certification is involved, the certification body can be accredited to EN ISO/IEC 17065 [2]
or EN ISO/IEC 17021 [3], as applicable.
NOTE 3 In order to help the reader, a basic test matrix is given in Annex A.
In conjunction with EN 13476-1, EN 13476-2 and EN 13476-3 this document is applicable to Plastics
piping systems for non-pressure underground drainage and sewerage — Structural-wall piping systems
of unplasticized poly(vinyl chloride) (PVC-U), polypropylene (PP) and polyethylene (PE):
— for non-pressure underground drainage and sewerage outside the building structure (application
area code “U”) reflected in the marking of products by “U”, and
— for non-pressure underground drainage and sewerage for both buried in ground within the building
structure (application area code “D” and outside the building structure (application area code “U”)
reflected in the marking of products by “UD”.
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 13476-1:2018, Plastics piping systems for non-pressure underground drainage and sewerage —
Structured-wall piping systems of unplasticized poly(vinyl chloride) (PVC-U), polypropylene (PP) and
polyethylene (PE) — Part 1:General requirements and performance characteristics
EN 13476-2:2018, Plastics piping systems for non-pressure underground drainage and sewerage —
Structured-wall piping systems of unplasticized poly(vinyl chloride) (PVC-U), polypropylene (PP) and
polyethylene (PE) — Part 2: Specifications for pipes and fittings with smooth internal and external surface
and the system, Type A
EN 13476-3:2018, Plastics piping systems for non-pressure underground drainage and sewerage —
Structured-wall piping systems of unplasticized poly(vinyl chloride) (PVC-U), polypropylene (PP) and
polyethylene (PE) — Part 3: Specifications for pipes and fittings with smooth internal and profiled external
surface and the system, Type B
3 Terms and definitions
For the purposes of this document, the following terms and definitions given in EN 13476-1, EN 13476-2
and EN 13476-3 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
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
Note 1 to entry: A certification body is preferably accredited to EN ISO/IEC 17065 [7]
3.2
inspection body
impartial organisation or company, approved by the certification body as possessing the necessary
competence to verify and/or to carry out initial type testing, audit testing and inspection of the
manufacturer's factory production control in accordance with the relevant standard
Note 1 to entry: An inspection body is preferably accredited to EN ISO/IEC 17020 [5].
3.3
testing laboratory
laboratory which measures, tests, calibrates or otherwise determines the characteristics of the
performance of compound / formulation and products
Note 1 to entry: In the context of this part of EN 13476, the compound / formulation and products can be
subjected to type testing, batch release testing, process verification testing, audit testing, and witness testing, as
applicable.
Note 2 to entry: A testing laboratory is preferably accredited to EN ISO/IEC 17025 [6].
3.4
quality management system
part of a management system with regard to quality
[Source: EN ISO 9000:2015 [6], definition 3.5.4]
Note 1 to entry: Requirements for quality management systems are given in EN ISO 9001 [1].
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
TT
testing performed to prove that the material, product, joint or assembly 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 material or product or assembly
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 formulation/ compound or products,
which has to be satisfactorily completed before the batch can be released
3.8
process verification test
PVT
test performed by or on behalf of the manufacturer on formulation/compound or products, joints or
assemblies at specific intervals to confirm that the process continues to be capable of producing products
which conform to the requirements given in the relevant standard
Note 1 to entry: Such tests are not required to release batches of formulation/compound or products and are
carried out as a measure of process control.
3.9
audit test
AT
test performed by a test laboratory on behalf of an inspection body or certification body to confirm that
the formulation / compound, product, joint or assembly continues to conform to the requirements given
in the relevant standard and to provide information to assess the effectiveness of the quality management
system
3.10
indirect test
IT
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
WT
test accepted by an inspection or a certification body for type testing 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, qualified in testing
3.12
material
generic term for compositions compounds/formulations grouped by families, expressed by generic
names
EXAMPLE: Examples of generic names are polypropylene, stainless steel, brass or EPDM.
Note 1 to entry: Definition from European Commission, Directorate-General for Enterprise and Industry, Sub-
group on Product Testing Procedures (EC, DG ENT and IND, SG PTP).
3.13
compound / formulation
clearly defined homogenous mixture of base 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
Note 1 to entry: Compound is used for polyolefins and formulation is used for PVC-U.
3.14
material batch
clearly identified quantity of a given homogeneous compound/formulation manufactured under uniform
conditions and defined and identified by the compound/formulation manufacturer
3.15
product
pipe or fitting of a clearly identified type intended to be a part of a piping system which the manufacturer
puts on the market
3.16
product batch
clearly identified collection of products, manufactured consecutively or continuously under the same
conditions, using the same compound/formulation conforming to the same specification
Note 1 to entry: The production batch is defined and identified by the product manufacturer.
3.17
sample
one or more products drawn from the same production batch, selected at random without regard to their
quality
Note 1 to entry: The number of products in the sample is the sample size.
3.18
group
collection of similar products from which samples are selected for testing purposes
3.19
component
product manufactured out of a specific composition compound/formulation, brought to the market as
part of another product or as a spare part
3.20
joint
connection between two products
3.21
assembled product
assembled final product using two or more single parts
3.22
fabricated fitting
fitting produced from pipe and/or from injection-moulded fittings by thermoforming, solvent-cementing
or welding
3.23
assembly
product that can be dismantled into a set of components
EXAMPLE A test piece consisting of various products.
3.24
sampling plan
specification of the type of sampling to be used combined with the operational specification of the entities
or increments to be taken, the samples to be constituted and the measurements or tests to be made
EXAMPLE A specific plan which indicates the number of units of products or assemblies to be inspected.
3.25
product type
generic description of a product
EXAMPLE A pipe or fitting or valve or their main parts, of the same design, from a particular compound.
3.26
cavity
part of the 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.
EN FR DE
AT audit test essai d’audit Überwachungsprüfung
BRT batch release test essai de libération de campagne de fabrication Freigabeprüfung einer Charge
IT indirect test essai indirect indirekte Prüfung
PVT process verification essai de vérification du procédé de fabrication Prozessüberprüfung
test
TT type test essai de type Typprüfung
WT witness testing essai témoin Prüfung unter Aufsicht
5 General
Compounds, formulations, products, joints and assemblies shall conform to the requirements given in
EN 13476-1, EN 13476-2 and EN 13476-3.
Products and assemblies shall be produced by the manufacturer under a quality management system
which includes a quality plan.
NOTE It is expected that the quality management system conforms to or is not less stringent than the relevant
requirements to EN ISO 9001 [1].
6 Testing and inspection
6.1 Material specification PVC-U
For the purposes of this document, the material specification consists of a formulation which defines PVC-
U resin and additives and their dosage levels and, if applicable, non-virgin materials with known dosage
level.
The dosage level of ingredients of a material shall not exceed the tolerance bands given in Table 1. If any
level exceeds the dosage band or if a type is changed, this variation in formulation constitutes a change
in material.
The use of external non-virgin material with agreed specification shall be considered as a change in
formulation when the change in addition exceeds the tolerance bands given in Table 2.
The values of the parts X added to 100 parts by mass of PVC-U shall be specified by the manufacturer in
his quality plan.
Table 1 — Material specification PVC-U compound
Ingredients Type Band
PVC-U resin Nominal K value: as specified ±3 units
Type and content of stabilizer or 1) OBS (Organic Based Stabilizers) X : ± 25 %
masterbatch 2) Ca-Zn
3) Sn
4) Ca-Sn
5) others
Lubricants All X : ± 50 % for X ≤ 0,2
2 2
X : ± 0,1 parts for X > 0,2
2 2
Mineral modifiers 1) CaCO
X : parts
−6
2) others
X : %
4,1 −50
X : %
4,n −50
X : ± 1 part
Impact modifiers All
Flow agents All X : ± 25 % for X ≤ 2
6 6
X : ± 0,5 parts for X > 2
6 6
Pigments  No requirement
Others To be separately specified by the X : ± 12,5 %
7,1
manufacturer
X : ± 12,5 %
7,n
Table 2 — Specification of PVC-U non-virgin material
Ingredients Type Band
External non-virgin material from pipes and With an agreed
b
X :
− X
fittings a
specification
All layers See limitations in B.2.1
of
EN 13476-2:2018 or
EN 13476-3:2018
External non-virgin material not from pipes With an agreed 0
b
X :
and fittings a − X
specification 8
Intermediate layer See limitations in B.2.2
of
EN 13476-2:2018
a
The specification shall be declared by the manufacturer to the certification body.
b
Provided the tolerances of Table 1 are still met.
6.2 Material specifications PP
For the purposes of this document, the material specification consists of a compound comprising a
polypropylene (PP) compound, additives and, if applicable, non-virgin materials with known dosage
level. When a masterbatch is used, it shall be considered as a change of compound, if the type of carrier
of the pigment is changed.
In case the content of the mineral modifier by mass is higher than the measured content by mass at the
Type Testing or a new type of mineral modifier is used, the compound shall be considered as a new
material.
The use of external non-virgin material with the agreed specification shall be considered as a change in
compound when the change in addition exceeds the tolerance given in agreed specification.
Type test results with maximum amount of non-virgin material with the same agreed specification shall
be taken as proving conformity of products containing a lower amount.
The specification shall be declared by the manufacturer to the certification body.
6.3 Material specifications PE
For the purposes of this document, the material specification consists of a compound comprising a
polyethylene (PE) compound, additives and, if applicable, non-virgin materials with known dosage level
When a masterbatch is used, it shall be considered as a change of compound, if the type of carrier of the
pigment is changed.
In case the content of the mineral modifier by mass is higher than the measured content by mass at the
Type Testing or a new type of mineral modifier is used, the compound shall be considered as a new
material.
The use of external non-virgin material with the agreed specification shall be considered as a change in
compound when the change in addition exceeds the tolerance given in agreed specification.
Type test results with maximum amount of non-virgin material with the same agreed specification shall
be taken as proving conformity of products containing a lower amount.
The specification shall be declared by the manufacturer to the certification body.
6.4 External non-virgin materials - validation
In addition to fulfilling all the relevant requirements in EN 13476-1, EN 13476-2 and EN 13476-3, a
control of
...