SIST-TS CEN/TS 1555-7:2003
(Main)Plastics piping systems for the supply of gaseous fuels - Polyethylene (PE) - Part 7: Guidance for the assessment of conformity
Plastics piping systems for the supply of gaseous fuels - Polyethylene (PE) - Part 7: Guidance for the assessment of conformity
This Part of EN 1555 gives guidance for assessment of conformity to be included in the manufacturer's quality plan as part of the quality system. In conjuction with other Parts of prEN 1555, this Part is applicable to polyethylene (PE) piping systems in the field of the supply of gaseous fuels. This Part of EN 1555 includes: a) requirements for materials, components, joints and assemblies given in the applicable Parts of prEN 1555; b) requirements for the manufacturer's quality system; c) definitions and procedures to be applied if third party certification is involved.
Kunststoff-Rohrleitungssystme für die Gasversorgung - Polyethylen (PE) - Teil 7: Empfehlungen für die Beurteilung der Konformität
Dieser Teil der prEN 1555 gibt Empfehlungen für die Beurteilung der Konformität, die als Teil des Qualitätssicherungssystems im Qualitätssicherungsplan des Herstellers enthalten sein müssen.
Dieser Teil der prEN 1555 enthält:
a) Anforderungen an Werkstoffe, Rohrleitungsteile sowie Verbindungen und Bauteilkombinationen, die im betreffenden Teil der prEN 1555 festgelegt sind;
b) Anforderungen an das Qualitätssicherungssystem des Herstellers;
ANMERKUNG 1 Es wird empfohlen, dass das Qualitätssicherungssystem EN ISO 9001 [2] entspricht.
c) Definitionen und Verfahren, die anzuwenden sind, wenn eine Fremdüberwachung durchgeführt wird.
ANMERKUNG 2 Wird eine Fremdüberwachung durchgeführt, sollte die Zertifizierungsstelle, in Abhängigkeit der Anwendung, nach EN 45011 [3] oder EN 45012 [4] zugelassen sein.
Zusammen mit den übrigen Teilen der prEN 1555 gilt dieser Teil für Rohre, Formstücke und Armaturen aus PE, deren Verbindungen untereinander sowie mit Rohrleitungsteilen aus anderen Werkstoffen, die unter den folgenden Bedingungen für die Gasversorgung vorgesehen sind:
a) der maximal zulässige Betriebsdruck MOP beträgt nicht mehr als 10 bar 1);
b) es gilt eine Betriebstemperatur von 20 °C als Bezugstemperatur.
ANMERKUNG 3 Für andere Betriebstemperaturen können Minderungsfaktoren verwendet werden, siehe prEN 1555-5.
Für Formstücke für mechanische Verbindungen, die in Abhängigkeit der Anwendung ISO 10838-1 [5], ISO 10838-2 [6] oder ISO 10838-3 [7] entsprechen, sind in diesem Teil der prEN 1555 keine Empfehlungen für die Beurteilung der Konformität enthalten. Wird eine solche Beurteilung gefordert, sollte im Einvernehmen zwischen Anwender und Hersteller ein Qualitätssicherungsplan erstellt werden, der in Abhängigkeit der Anwendung auf den Prüfungen nach ISO 10838-1[5], ISO 10838-2[6] oder ISO 10838-3[7] basiert.
Systemes de canalisations en plastiques pour la distribution de combustibles gazeux - Polyéthylene (PE) - Partie 7: Guide pour l'évaluation de la conformité
La présente Partie du prEN 1555 donne un guide pour l'évaluation de la conformité a inclure dans le plan qualité du fabricant, en tant que partie de son systeme qualité.
La présente Partie du prEN 1555 comprend :
a) les exigences pour les matieres, les composants et les assemblages, données dans les différentes parties du prEN 1555 ;
b) les exigences pour le systeme qualité du fabricant ;
NOTE 1 Il est recommandé que le systeme qualité réponde a l'EN ISO 9001[2].
c) les définitions et les procédures a appliquer si une certification par tierce partie est prise en compte.
NOTE 2 Si une certification par tierce partie est prise en compte, il est recommandé que l'organisme de certification soit accrédité au sens de l'EN 450113] ou de l'EN 45012[4] selon le cas.
Conjointement avec les autres Parties du prEN 1555, elle s'applique aux tubes, raccords et robinets en PE, leurs assemblages, et leurs assemblages avec des composants en d'autres matieres, destinés a etre utilisés dans les conditions suivantes :
a) une pression maximale de service, MOP, jusques et y compris 10 bar ) ;
b) une température de service de 20 °C, comme température de référence.
NOTE 3 Pour d'autres températures de service, des facteurs de réduction peuvent etre utilisés, voir prEN 1555-5.
Pour les raccords mécaniques conformes a l'ISO 10838-1[5], ISO 10838-2[6] ou ISO 10838-3 [7], selon le cas, le guide pour l'évaluation de la conformité n'est pas donné dans cette partie du prEN 1555. Si cela est nécessaire, il convient qu'un plan qualité basé sur les essais mentionnés dans l'ISO 10838-1[5], ISO 10838-2[6] ou ISO 10838-3[7], selon le cas, soit établi selon un accord entre l'utilisateur et le fabricant.
Le prEN 1555 concerne une gamme de pressions maximales de service et donne les exigences concernant la couleur et les additifs.
Cevni sistemi iz polimernih materialov za oskrbo s plinastimi gorivi - Polietilen (PE) - 7. del: Smernice za ugotavljanje skladnosti
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
SIST-TS CEN/TS 1555-7:2003
01-oktober-2003
Cevni sistemi iz polimernih materialov za oskrbo s plinastimi gorivi - Polietilen
(PE) - 7. del: Smernice za ugotavljanje skladnosti
Plastics piping systems for the supply of gaseous fuels - Polyethylene (PE) - Part 7:
Guidance for the assessment of conformity
Kunststoff-Rohrleitungssystme für die Gasversorgung - Polyethylen (PE) - Teil 7:
Empfehlungen für die Beurteilung der Konformität
Systemes de canalisations en plastiques pour la distribution de combustibles gazeux -
Polyéthylene (PE) - Partie 7: Guide pour l'évaluation de la conformité
Ta slovenski standard je istoveten z: CEN/TS 1555-7:2003
ICS:
83.140.30 Cevi, fitingi in ventili iz Plastics pipes, fittings and
polimernih materialov valves
91.140.40 Sistemi za oskrbo s plinom Gas supply systems
SIST-TS CEN/TS 1555-7:2003 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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SIST-TS CEN/TS 1555-7:2003
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SIST-TS CEN/TS 1555-7:2003
TECHNICAL SPECIFICATION
CEN/TS 1555-7
SPÉCIFICATION TECHNIQUE
TECHNISCHE SPEZIFIKATION
April 2003
ICS 23.040.01; 91.140.40
English version
Plastics piping systems for the supply of gaseous fuels -
Polyethylene (PE) - Part 7: Guidance for the assessment of
conformity
Systèmes de canalisations en plastiques pour la Kunststoff-Rohrleitungssystme für die Gasversorgung -
distribution de combustibles gazeux - Polyéthylène (PE) - Polyethylen (PE) - Teil 7: Empfehlungen für die Beurteilung
Partie 7: Guide pour l'évaluation de la conformité der Konformität
This Technical Specification (CEN/TS) was approved by CEN on 25 November 2002 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. 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, 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. CEN/TS 1555-7:2003 E
worldwide for CEN national Members.
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Contents
Foreword.3
Introduction .4
1 Scope.5
2 Normative references.5
3 Terms and definitions, symbols and abbreviations .6
3.1 Terms and definitions.6
3.2 Abbreviations.8
4 Requirements .9
4.1 General.9
4.2 Testing and inspection .9
4.3 Technical file .24
Annex A (normative) Change of compound .25
A.1 General.25
A.2 Change.25
A.3 Type testing required for re-evaluation .25
Bibliography .27
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Foreword
This document (CEN/TS 1555-7:2003) has been prepared by Technical Committee CEN /TC 155, "Plastics piping
systems and ducting systems", the secretariat of which is held by NEN.
It has been prepared in liaison with CEN/TC 234 "Gas supply".
This Technical Specification can be used to support elaboration of national third party certification procedures for
products conforming to the applicable Parts of EN 1555.
This Technical Specification 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.
System Standards are based on the results of the work undertaken in ISO/TC 138 "Plastics pipes, fittings and
valves for the transport of fluids", which is a Technical Committee of the International Organization for
Standardization (ISO).
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.
EN 1555 consists of the following Parts, under the general title Plastics piping systems for the supply of gaseous
fuels - Polyethylene (PE)
— Part 1: General
— Part 2: Pipes
— Part 3: Fittings
— Part 4: Valves
— Part 5: Fitness for purpose of the system
— Part 7: Guidance for assessment of conformity (this Technical Specification).
NOTE The document dealing with recommended practice for installation which was initially submitted for CEN enquiry as
[1]
prEN 1555-6 was withdrawn when EN 12007-2 , prepared by CEN/TC 234 "Gas supply", was published with the title "Gas
supply systems - Pipelines for maximum operating pressure up to and including 16 bar - Part 2: Specific functional
recommendations for polyethylene (MOP up to and including 10 bar)".
This document includes the following:
— Annex A (normative) Change of compound
— Bibliography.
According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following
countries are bound to announce this CEN Technical Specification: 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.
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Introduction
The System Standard, of which this is Part 7, specifies the requirements for a piping system and its components
made from polyethylene (PE) and is intended to be used for the supply of gaseous fuels.
Requirements and test methods for material and components of the piping system are specified in EN 1555-1,
EN 1555-2, EN 1555-3 and EN 1555-4. Characteristics for fitness for purpose are covered in EN 1555-5.
[1]
Recommended practice for installation is given in EN 12007-2 prepared by CEN/TC 234.
This Part of EN 1555 gives guidance to procedures and requirements for the assessment of conformity of
materials, components, joints and is intended to be used by manufacturers, inspection bodies, testing laboratories
and certification bodies.
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1 Scope
This Part of EN 1555 gives guidance for assessment of conformity to be included in the manufacturer's quality plan
as part of the quality system.
This Part of EN 1555 includes:
a) requirements for materials, components and joints given in the applicable Parts of EN 1555;
b) requirements for the manufacturer's quality system;
[2]
NOTE 1 It is recommended that the quality system conforms to EN ISO 9001 .
c) definitions and procedures to be applied if third party certification is involved.
[3]
NOTE 2 If third party certification is involved, it is recommended that the certification body is accredited to EN 45011 or
[4]
EN 45012 , as applicable.
In conjunction with the other Parts of EN 1555 it is applicable to PE pipes, fittings, and valves, their joints and to
joints with components of other materials intended to be used under the following conditions:
1)
a) a maximum operating pressure, MOP, up to and including 10 bar ;
b) an operating temperature of 20 °C as reference temperature.
NOTE 3 For other operating temperatures, derating coefficients can be used, see EN 1555-5.
[5] [6] [7]
For mechanical fittings conforming to ISO 10838-1 , ISO 10838-2 or ISO 10838-3 , as applicable, guidance
for assessment of conformity is not given in this part of EN 1555. When requested, a quality plan based on the
[5] [6] [7]
tests mentioned in ISO 10838-1 , ISO 10838-2 or ISO 10838-3 , as applicable, should be set up in
agreement between user and manufacturer.
EN 1555 covers a range of maximum operating pressures and gives requirements concerning colours and
additives.
NOTE 4 It is the responsibility of the purchaser or specifier to make the appropriate selections from these aspects, taking into
account their particular requirements and any relevant national regulations and installation practices or codes.
2 Normative references
This European Technical Specification 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 Technical Specification only when incorporated in it by amendment or revision. For undated
references the latest edition of the publication referred to applies (including amendments).
EN 728, Plastics piping and ducting systems Polyolefin pipes and fittings Determination of oxidation
induction time.
EN 1555-1:2002, Plastics piping systems for the supply of gaseous fuels Polyethylene (PE) Part 1: General.
EN 1555-2:2002, Plastics piping systems for the supply of gaseous fuels Polyethylene (PE) Part 2: Pipes.
EN 1555-3:2002, Plastics piping systems for the supply of gaseous fuels Polyethylene (PE) Part 3: Fittings.
EN 1555-4:2002, Plastics piping systems for the supply of gaseous fuels Polyethylene (PE) Part 4: Valves.
EN 1555-5:2002, Plastics piping systems for the supply of gaseous fuels Polyethylene (PE) Part 5: Fitness
for purpose of the system.
EN ISO 12162, Thermoplastics materials for pipes and fittings for pressure applications Classification and
designation Overall service (design) coefficient (ISO 12162:1995).
1) 1 bar = 0,1 MPa
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ISO 2859-1, Sampling procedures for inspection by attributes Part 1: Sampling schemes indexed by
acceptance quality limit (AQL) for lot-by-lot inspection.
ISO 2859-2, Sampling procedures for inspection by attributes Part 2: Sampling plans indexed by limiting quality
(LQ) for isolated lot inspection.
ISO 6259-1, Thermoplastics pipes – Determination of tensile properties – Part 1: General test method.
ISO 6259-3, Thermoplastics pipes – Determination of tensile properties – Part 3: Polyolefin pipes.
ISO 13477, Thermoplastics pipes for the conveyance of fluids Determination of resistance to rapid crack
propagation (RCP) Small-scale steady-state test (S4 test).
ISO 13953, Polyethylene (PE) pipes and fittings Determination of the tensile strength and failure mode of test
pieces from a butt-fused joint.
ISO 13954, Plastics pipes and fittings Peel decohesion test for polyethylene (PE) electrofusion assemblies of
nominal outside diameter greater than or equal to 90 mm.
ISO 13955, Plastics pipes and fittings Crushing decohesion test for polyethylene (PE) electrofusion assemblies.
ISO/DIS 13956,, Plastics pipes and fittings Determination of cohesive strength Tear test for polyethylene
(PE) saddle assemblies.
3 Terms and definitions, symbols and abbreviations
For the purposes of this Technical Specification, the terms and definitions, symbols and abbreviations given in
prEN 1555-1:2002, prEN 1555-3:2002, prEN 1555-4:2002 and prEN 1555-5:2002, as applicable, apply together
with the following.
3.1 Terms and definitions
3.1.1
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
3.1.2
inspection body
impartial organization or company, approved by a certification body as possessing the necessary competence to
verify and/or to carry out initial type testing, witness testing, audit testing, and inspection of the manufacturer's
factory production control in accordance with the relevant European Standard
3.1.3
testing laboratory
laboratory which measures, tests, calibrates or otherwise determines the characteristics of the performance of
materials and products
3.1.4
quality system
organizational structure, responsibilities, procedures, processes and resources for implementing quality
[8]
management (see EN ISO 9000 )
3.1.5
quality plan
document setting out the specific quality practices, resources and sequence of activities relevant to a particular
product or range of products
3.1.6
type testing (TT)
testing performed to prove that the material, component, assembly is capable of conforming to the requirements
given in the relevant standard
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NOTE A component is a pipe, a fitting, or a valve intended to be a part of a piping system.
3.1.7
preliminary type testing (PTT)
type testing carried out by or on behalf of the manufacturer
3.1.8
initial type testing (ITT)
type testing carried out by or on behalf of a certification body for certification purposes
3.1.9
batch release test (BRT)
test performed by the manufacturer on a batch of material or components which has to be satisfactorily completed
before the batch can be released
3.1.10
process verification test (PVT)
test performed by the manufacturer on material, components, assemblies at specific intervals to confirm that the
process continues to be capable of producing components conforming to the requirements given in the relevant
standard
NOTE Such tests are not required to release batches of components and are carried out as a measure of process control.
3.1.11
audit test (AT)
test performed by or on behalf of a certification body to confirm that the material, components, assemblies
continues to conform to the requirements given in a System Standard and to provide information to assess the
effectiveness of the quality system
3.1.12
indirect test (IT)
test performed by the manufacturer, different from that specified for that particular characteristic, having verified its
correlation with the specified test
3.1.13
witness testing (WT)
testing accepted by an inspection or certification body as initial 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
3.1.14
material batch
clearly identifiable quantity of a particular material
3.1.15
compound batch
clearly identifiable quantity of a given homogeneous compound manufactured under uniform conditions. The
compound batch is defined and identified by the compound manufacturer
3.1.16
production batch
clearly identifiable collection of units, manufactured consecutively or continuously under the same conditions, using
material or compound conforming to the same specification
3.1.17
pipe batch
number of pipes, all of them of the same nominal outside diameter, wall thickness and marking, extruded from the
same compound on the same machine. The pipe batch is defined and identified by the pipe manufacturer
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3.1.18
fitting or valve batch
number of fittings or valves of the same type, identical dimensional characteristics (same nominal diameter, same
thickness) and same marking, from the same compound. The fitting or valve batch is defined and identified by the
fitting or valve manufacturer.
3.1.19
lot
clearly identifiable sub-division of a batch for inspection purposes
3.1.20
sample
one or more units of product drawn from a batch or lot, selected at random without regard to quality
NOTE The number of units of product in the sample is the sample size.
3.1.21
acceptable quality level (AQL)
when a continuous series of lots or batches is considered, the quality level which for the purposes of sampling
inspection is the limit of a satisfactory process average (see ISO 2859-1 and ISO 2859-2)
NOTE The designation of an AQL does not imply that a manufacturer has the right knowingly to supply any non-conforming
unit of product.
3.1.22
inspection level
the relationship between the lot or batch size and the sample size (see ISO 2859-1)
3.1.23
group
collection of similar components from which samples are selected for testing purposes
3.1.24
product type
pipe or a fitting or a valve or their main parts, of the same design, from a particular compound, suitable for the
conveyance of gaseous fuels, meeting the requirements given in a standard
3.1.25
body type
same body of a valve which contains different end connections
3.1.26
cavity
part of the injection mould which gives the form to the injection-moulded product. A mould can consist of several
cavities
3.2 Abbreviations
NOTE 1 For reasons of avoiding misunderstanding the following abbreviations are kept the same in each of the languages.
For the same reason the terms are given in the three languages. (E for English, F for French and D for German)
NOTE 2 In the French language the abbreviation for « acceptable quality level » (AQL) is NQA, however for the purpose of
this European Technical Specification for all three languages the same abbreviation (AQL) is used.
AQL en : acceptable quality level
fr : niveau de qualité acceptable
de : annehmbare Qualitätsgrenzlage
AT en : audit test
fr : essai d’audit
de : Überwachungsprüfung
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BRT en : batch release test
fr : essai de libération de lot de fabrication
de : Freigabeprüfung einer Charge
IT en : indirect test
fr : essai indirect
de : indirekte Prüfung
ITT en : initial type testing
fr : essais de type initiaux
de : Erst-Typprüfung
PTT en : preliminary type testing
fr : essais de type préliminaires
de : vorausgehende Typprüfung
PVT en : process verification test
fr : essai de vérification du procédé de fabrication
de : Prozessüberprüfung
TT en : type testing
fr : essais de type
de : Typprüfung
WT en : witness testing
fr : essais témoins
de : Prüfung unter Aufsicht
4 Requirements
4.1 General
4.1.1 Compound, components, joints shall conform to the requirements given in EN 1555-1:2002,
prEN 1555-2:2002, prEN 1555-3:2002, prEN 1555-4:2002 and prEN 1555-5:2002, as applicable.
4.1.2 Components and/or joints shall be produced by the manufacturer under a quality management system
which includes a quality plan.
4.2 Testing and inspection
4.2.1 Grouping
For the purposes of this Technical Specification the size groups given in Table 1 shall apply for pipes, fittings and
valves.
Table 1 — Size groups for pipes, fittings and valves
Dimensions in millimetres
Size group 1 2 3
Nominal outside
diameter, d , for pipes, d < 75 75 £ d < 250 250 £ d £ 630
n n n n
fittings and valves
Fittings are also grouped according to jointing technique
— (A) Electrofusion socket fitting;
— (B) Electrofusion saddle fitting;
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— (C) Spigot end fitting;
4.2.2 Type testing (TT)
4.2.2.1 General
Type tests shall demonstrate that products conform to all requirements for the characteristics given in Tables 2 to
5, as applicable.
In addition, relevant type tests shall be carried out whenever there is a change in design, and/or in the production
method, other than routine in-process adjustments, and to extensions of the product range as indicated in Tables 3
to 5.
In case of change in compound as defined in A.2, relevant type test requirements as defined in A.3 and in Tables 3
to 5 shall apply.
For the purposes of a change in design, the following characteristics are relevant:
a) dimensions and geometry (See column X of Tables 4 and 5), as: change of visual and functional optimisations,
change of overall dimensions, change of a non-PE part;
b) joint affected part (See column Y of Tables 4 and 5), as: change of the dimensions of the fusion zone (e.g. wire
pitch, wire depth), the electrical characteristics (e.g. wire, resistance), the fusion parameters (e.g. time,
voltage).
For the extension of the product range for fittings and valves, the relevant characteristics given in Tables 4 and 5
shall be retested. If third party certification is involved, the extent of retesting shall be agreed between the
manufacturer and the certification body.
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Table 2 — Characteristics of the compound that require type testing (TT) by the compound manufacturer
Characteristic Reference to Part Sampling Number of samples Number of
a
and clause of procedure measurements per
prEN 1555:2002 sample
Conventional density 1-4.2.3.1 Once/compound 3 1
Oxidation induction time (thermal 1-4.2.3.1 Once/compound 3 1
stability)
Melt mass-flow rate (MFR) 1-4.2.3.1 Once/compound 3 1
Volatile content 1-4.2.3.1 Once/compound 1 1
b
Water content 1-4.2.3.1 Once/compound 1 1
c
Carbon black content 1-4.2.3.1 Once/compound 3 1
c
Carbon black dispersion 1-4.2.3.1 Once/compound 1 6
d
Pigment dispersion 1-4.2.3.1 Once/compound 1 6
Resistance to gas condensate 1-4.2.3.2 Once/compound 3 1
e f f
Resistance to weathering 1-4.2.3.2 Once/compound 3/3/5 1/1/1
Resistance to rapid crack 1-4.2.3.2 Once/compound Shall conform to Shall conform to
propagation (critical pressure, p ) ISO 13477 ISO 13477
c
5-5 Once/compound
(e ‡ 15 mm)
Resistance to slow crack growth 1-4.2.3.2 Once/compound 3 1
(d : 110 mm or 125 mm -
n
SDR 11)
Tensile strength for butt fusion 1-4.3.1 Once/compound 3 Shall conform to ISO
(d : 110 mm or 125 mm - SDR 13953
n
1-4.3.2 Once/compound 3
11)
Classification 1-4.4 Once/compound Shall conform to Shall conform to
EN ISO 12162 EN ISO 12162
a
The number of samples given in the table is the minimum. All samples shall pass the relevant test(s).
b
Only applicable if the requirement for volatile content is not conformed to. In case of dispute the requirement for water
content shall apply.
c
Only applicable for black compound.
d
Only applicable for yellow compound.
e
For the determination of the oxidation induction time. 0,2 mm from the weathered surface shall be taken off before
sampling. The diameter of the test pipes shall be given in the test report.
f
Three samples for oxidation induction time with one measurement per sample/ Three samples for hydrostatic strength with
one measurement per sample / Five samples for elongation at break with one measurement per sample.
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Table 3 — Characteristics of pipes that require type testing (TT)
per compound by the pipe manufacturer
a
Characteristic Reference to Part Sampling procedure Number of test Number of
b
and clause of pieces measurements per
prEN 1555:2002 test piece
Appearance 2-5.1 Two diameters/ size group 1 1
Colour 2-5.2 Two diameters/ size group 1 1
c
Geometrical characteristics 2-6 Two diameters/ size group 8 1
Circumferential reversion 2-6.4 Two diameters/ size group 3 1 1
Hydrostatic strength 2-7.2 Two diameters/ size group 3 1
(20 °C, 100 h)
Hydrostatic strength 5-4.2.1.2 One diameter/ size group 3 1
(80 °C, 165 h)
Hydrostatic strength 2-7.2 Two diameters/ size group 3 1
(80 °C, 1000 h)
Elongation at break 2-7.2 Two diameters/ size group Shall conform to 1
ISO 6259-1
Resistance to slow crack 2-7.2 Two diameters/ size group 3 1
growth e £ 5 mm (Cone test)
2-7.2 Two diameters/ size group 3 1
Resistance to slow crack
growth e > 5 mm (Notch test)
Resistance to rapid crack 2-7.2 One diameter/ size group Shall conform to Shall conform to
propagation (critical pressure, (maximum wall thickness of the ISO 13477 ISO 13477
d
p ) manufacturer's range)
c
5-5 One diameter/ size group
(maximum wall thickness of the
manufacturer's range)
e
Oxidation induction time 2-8.2 Two diameters/ size group 3 1
(Thermal stability)
Melt mass-flow rate (MFR) 2-8.2 Two diameters/ size group 3 1
Longitudinal reversion 2-8.2 Two diameters/ size group 1 1
Resistance to weathering 2-8.2 Tested on the compound in the form of pipe by the compound
manufacturer
Marking 2-10.2 Two diameters/ size group 1 1
f
Tensile strength for butt fusion 5-4.2.1.1 One diameter/ size group 1 Shall conform to ISO
13953
f
5-4.2.1.2 One diameter/ size group 1
a
Evenly distributed diameters over the product range shall be chosen. The product range in each size group shall be defined by
the manufacturer. Samples shall comprise the smallest and largest diameter of the range manufactured. The successful testing
will validate pipe with the same d a higher SDR, i.e. thinner wall thickness. Where a manufacturer extends his production
n
beyond his approval, additional relevant type testing shall be carried out.
b
The number of test pieces given in the table is the minimum. All test pieces shall pass the relevant test(s).
c
Test pieces may be subsequently used in the destructive test listed in this table.
d
If applicable (See Table 4 of EN 1555-2:2002).
e
With one from the inner surface, one from the outside surface, and one from the middle of the wall for size groups 2 and 3, and
according to EN 728 for size group 1.
f
Results of tests in accordance with 4.3 of EN 1555-1:2002 done by the compound manufacturer should be taken into
consideration.
In case of change of compound, all type tests shall apply. For minor changes in accordance with A.3.2, the pipe
manufacturer shall only carry out PVT and BRT tests.
12
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SIST-TS CEN/TS 1555-7:2003
CEN/TS 1555-7:2003 (E)
Table 4 — Characteristics of the fittings that require type testing (TT) per compound by the fitting
manufacturer
a
Characteristic Reference to Sampling procedure Change of PE compound Change in Number Number of
b
Part and design of test measurements
c
clause of pieces per test piece
XY
prEN 1555:200
2
Appearance 3-5.1 Once/size/ One diameter/size group/ -- 11
d
product type/cavity
d
product type/cavity
Colour 3-5.2 Once/size/ One diameter/ size group/ 11
--
d d
product type/ cavity product type/cavity
e
Geometrical 3-6 Once/size/ One diameter/size ++ 8 1
d d
characteristics product type/ cavity group/product type/cavity
Hydrostatic strength 3-7.2 Once/size/ Two diameters/size group/ -- 31
(20 °C, 100 h) product type product type
Hydrostatic strength 5-4.2.1.2 Once/size group/ Once/size group/ product type-+3 1
h
(80 °C, 165 h) (C) product type
Hydrostatic strength 3-7.2 Once/size/ Two diameters/ ++ 3 1
(80 °C, 1000 h) product type size group/product type
Decohesive resistance 3-7.2 Once/size/ Two diameters/-+2
h
(A) product type size group/ product type
Shall conform to
5-4.2.2.1 Once/size/ Two diameters/ -+ 1
ISO 13954
product type size group/ product type
ISO 13955
5-4.2.2.2 Once/size/ Two diameters/ -+ 2
product type size group/ product type
h
Cohesive strength (B) 3-7.2 -+ 2
Once/size/ Two diameters/size
product type group/product type
5-4.2.2.1 Once/size/ Two diameters/ size group/ -+ 1 Shall conform to
product type product type ISO/DIS 13956
5.4.2.2.2 Once/size/ Two diameters/ size group/ -+ 2
product type product type
Tensile strength for butt 3-7.2 Once/size/ T
...
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