SIST-TS CEN/TS 14632:2007

Plastics piping systems for drainage, sewerage and water supply, pressure and non-pressure - Glass-reinforced thermosetting plastics (GRP) based on polyester resin (UP) - Guidance for the assessment of conformity

This Technical Specification gives guidance for parties involved in the assessment of conformity of piping systems made from GRP-UP (glass-reinforced thermosetting resins based on unsaturated polyesters) intended to be used for drainage, sewerage or water supply. It contains procedures for the assessment of conformity to the requirements in the relevant system standards for materials, pipes, fittings and joints.
NOTE 1    These procedures can be included in the manufacturer's quality plan as part of his quality system, which should conform to EN ISO 9001[1] or other systems, as applicable.
NOTE 2    This Technical Specification can be included in a quality system subject to third party certification of conformity by a certification body that is accredited to EN 45011[2] or EN 45012[3], as applicable.

Kunststoff-Rohrleitungssysteme für die Entwässerung und Wasserversorgung mit und ohne Druck - Glasfaserverstärkte duroplastische Kunststoffe (GFK) auf der Basis von Polyesterharz (UP) - Empfehlungen für die Beurteilung der KonformitätK

Diese Technische Spezifikation ist ein Leitfaden für die Parteien, die an der Beurteilung der Konformität von
Rohrleitungssystemen beteiligt sind, die aus GFK-UP (glasfaserverstärkte duroplastische Kunststoffe auf der
Basis von ungesättigtem Polyesterharz) hergestellt werden und die für die Entwässerung sowie für die
Wasserversorgung verwendet werden. Sie enthält Verfahren für die Beurteilung der Konformität für die
Anforderungen, die in den entsprechenden Systemnormen für Werkstoffe, Rohre, Formstücke und
Verbindungen enthalten sind.
ANMERKUNG 1 Diese Verfahren können im Qualitätssicherungsplan des Herstellers als Teil des
Qualitätssicherungssystems enthalten sein und sollten in Abhängigkeit der Anwendung EN ISO 9001 [1] oder anderen
Systemnormen entsprechen.
ANMERKUNG 2 Diese Technische Spezifikation kann in einem Qualitätssicherungssystem enthalten sein, in dem die
Zertifizierung durch unparteiische Dritte erfolgt, wobei

Systemes de canalisations en plastique pour les branchements, les collecteurs d'assainissement et l'alimentation en eau, avec ou sans pression - Plastiques thermodurcissables renforcés de verre (PRV) a base de résine polyester (UP) - Guide pour l'évaluation de conformité

La présente spécification technique fournit un guide pour les parties impliquées dans l’évaluation de
conformité des systemes de canalisations fabriqués a partir de PRV-UP (résines thermodurcissables
renforcées de verre a base de polyesters non saturés) destinés a etre utilisés pour les branchements et les
collecteurs d’assainissement ou l’adduction d’eau. Elle contient les procédures pour l’évaluation de la
conformité par rapport aux exigences contenues dans les normes de systeme concernées relatives aux
matériaux, tubes, raccords et assemblages.
NOTE 1 Ces procédures peuvent etre incluses dans le plan qualité du fabricant en tant que partie intégrante de son
systeme qualité. Il convient que celui-ci soit conforme a l’EN ISO 9001[1] ou a d’autres systemes, selon le cas.
NOTE 2 La présente spécification technique peut etre incluse dans un systeme qualité sous réserve d'une certification
de conformité par tierce partie par un organisme de certification accrédité conformément a l’EN 45011[2] ou EN 45012[3],
selon le cas.

Cevni sistemi iz polimernih materialov za odvodnjavanje, kanalizacijo in oskrbo z vodo, s tlakom in brez njega - S steklenimi vlakni okrepljeni duromerni materiali (GRP), ki temeljijo na nenasičeni poliestrski smoli (UP) - Navodilo za ugotavljanje skladnosti

General Information

• Status: Withdrawn
• Publication Date: 31-Dec-2006
• Withdrawal Date: 03-Apr-2012
• ICS: 23.040.05 - Pipeline and its parts for external sewage systems
• ICS: 91.140.60 - Water supply systems
• ICS: 91.140.80 - Drainage systems
• ICS: 93.030 - External sewage systems
• Technical Committee: PCV - Plastic pipes, fittings and valves
• Current Stage: 9900 - Withdrawal (Adopted Project)
• Start Date: 03-Apr-2012
• Due Date: 26-Apr-2012
• Completion Date: 04-Apr-2012
• Ref Project: CEN/TS 14632:2006 - Plastics piping systems for drainage, sewerage and water supply, pressure and non-pressure - Glass-reinforced thermosetting plastics (GRP) based on polyester resin (UP) - Guidance for the assessment of conformity

Relations

• Replaced By: SIST-TS CEN/TS 14632:2012 - Plastics piping systems for drainage, sewerage and water supply, pressure and non-pressure - Glass-reinforced thermosetting plastics (GRP) based on unsaturated polyester resin (UP) - Guidance for the assessment of conformity
• Effective Date: 01-May-2012

Standards Content (Sample)

SLOVENSKI STANDARD
SIST-TS CEN/TS 14632:2007
01-januar-2007
&HYQLVLVWHPLL]SROLPHUQLKPDWHULDORY]DRGYRGQMDYDQMHNDQDOL]DFLMRLQRVNUER]
YRGRVWODNRPLQEUH]QMHJD6VWHNOHQLPLYODNQLRNUHSOMHQLGXURPHUQLPDWHULDOL
*53NLWHPHOMLMRQDQHQDVLþHQLSROLHVWUVNLVPROL831DYRGLOR]DXJRWDYOMDQMH
VNODGQRVWL
Plastics piping systems for drainage, sewerage and water supply, pressure and non-
pressure - Glass-reinforced thermosetting plastics (GRP) based on polyester resin (UP) -
Guidance for the assessment of conformity
Kunststoff-Rohrleitungssysteme für die Entwässerung und Wasserversorgung mit und
ohne Druck - Glasfaserverstärkte duroplastische Kunststoffe (GFK) auf der Basis von
Polyesterharz (UP) - Empfehlungen für die Beurteilung der KonformitätK
Systemes de canalisations en plastique pour les branchements, les collecteurs
d'assainissement et l'alimentation en eau, avec ou sans pression - Plastiques
thermodurcissables renforcés de verre (PRV) a base de résine polyester (UP) - Guide
pour l'évaluation de conformité
Ta slovenski standard je istoveten z: CEN/TS 14632:2006
ICS:
23.040.20 Cevi iz polimernih materialov Plastics pipes
91.140.60 Sistemi za oskrbo z vodo Water supply systems
91.140.80 Drenažni sistemi Drainage systems
93.030 Zunanji sistemi za odpadno External sewage systems
vodo
SIST-TS CEN/TS 14632:2007 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST-TS CEN/TS 14632:2007

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SIST-TS CEN/TS 14632:2007
TECHNICAL SPECIFICATION
CEN/TS 14632
SPÉCIFICATION TECHNIQUE
TECHNISCHE SPEZIFIKATION
June 2006
ICS 23.040.01; 91.140.60; 91.140.80; 93.030

English Version
Plastics piping systems for drainage, sewerage and water
supply, pressure and non-pressure - Glass-reinforced
thermosetting plastics (GRP) based on polyester resin (UP) -
Guidance for the assessment of conformity
Systèmes de canalisations en plastique pour les Kunststoff-Rohrleitungssysteme für die Entwässerung und
branchements, les collecteurs d'assainissement et Wasserversorgung mit und ohne Druck -
l'alimentation en eau, avec ou sans pression - Plastiques Glasfaserverstärkte duroplastische Kunststoffe (GFK) auf
thermodurcissables renforcés de verre (PRV) à base de der Basis von Polyesterharz (UP) - Empfehlungen für die
résine polyester (UP) - Guide pour l'évaluation de Beurteilung der KonformitätK
conformité
This Technical Specification (CEN/TS) was approved by CEN on 17 December 2005 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, Cyprus, Czech Republic, Denmark, Estonia, Finland, France,
Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania,
Slovakia, Slovenia, 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
© 2006 CEN All rights of exploitation in any form and by any means reserved Ref. No. CEN/TS 14632:2006: E
worldwide for CEN national Members.

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SIST-TS CEN/TS 14632:2007
CEN/TS 14632:2006 (E)
Contents
Page
Foreword.3
Introduction.4
1 Scope.5
2 Normative references .5
3 Definitions and abbreviations.6
3.1 Definitions.6
3.2 Abbreviations.8
4 Requirements .9
4.1 General.9
4.2 Testing and inspection.9
Annex A (informative) Typical statistical methods to compare means and variances.19
A.1 General.19
A.2 Example of comparison of means and variance .19
Annex B (normative) Procedures for dealing with test data provided by the manufacturer and for
witnessed tests in a manufacturer's laboratory .23
B.1 General.23
B.2 Test data provided by the manufacturer.23
B.3 Witnessed tests in a manufacturer's laboratory .23
Annex C (normative) Definitions of changes in material, design and process.24
C.1 General.24
C.2 Change in materials.24
C.3 Change in design.25
C.4 Change in process.26
Annex D (normative) Tests to assess the effects of changes .27
D.1 Tests .27
D.2 Evaluation of test results .27
Annex E (normative) Parameters and criteria for reduced long-term tests (RLTT).29
E.1 General.29
E.2 Reduced long-term test parameters.29
E.3 Other test parameters.31
E.4 Evaluation of results of destructive RLTTs (see E.2.2, E.2.3 and E.2.4) .32
Bibliography.37

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CEN/TS 14632:2006 (E)
Foreword
This Technical Specification (CEN/TS 14632:2006) has been prepared by Technical Committee CEN/TC155
"Plastics piping systems and ducting systems", the secretariat of which is held by NEN.
This Technical Specification can be used to support elaboration of national third party certification procedures for
GRP products (glass-reinforced thermosetting resins based on unsaturated polyesters) to be used in piping
systems for the transport of water, drainage and sewage.
According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following
countries are bound to announce this Technical Specification: Austria, Belgium, Cyprus, Czech Republic, Denmark,
Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta,
Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United
Kingdom.
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SIST-TS CEN/TS 14632:2007
CEN/TS 14632:2006 (E)
Introduction
This Technical Specification covers procedures and requirements for the assessment of conformity of materials,
components, joints and assemblies made from GRP (glass-reinforced thermosetting resins based on unsaturated
polyesters) intended to be used for drainage, sewerage or water supply. Requirements and test methods for
materials, pipes, fittings and joints are specified in the relevant system standards.

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CEN/TS 14632:2006 (E)
1 Scope
This Technical Specification gives guidance for parties involved in the assessment of conformity of piping systems
made from GRP-UP (glass-reinforced thermosetting resins based on unsaturated polyesters) intended to be used
for drainage, sewerage or water supply. It contains procedures for the assessment of conformity to the
requirements in the relevant system standards for materials, pipes, fittings and joints.
NOTE 1 These procedures can be included in the manufacturer’s quality plan as part of his quality system, which should
[1]
conform to EN ISO 9001 or other systems, as applicable.
NOTE 2 This Technical Specification can be included in a quality system subject to third party certification of conformity by a
[2] [3]
certification body that is accredited to EN 45011 or EN 45012 , as applicable.
2 Normative references
The following referenced documents are indispensable for the application of this Technical Specification. For dated
references, only the edition cited applies. For undated references, the latest edition of the referenced document
(including any amendments) applies.
EN 637, Plastics piping systems  Glass-reinforced plastics components  Determination of the amounts of
constituents using the gravimetric method
EN 681-1, Elastomeric seals — Materials requirements for pipe joint seals used in water and drainage applications
— Part 1: Vulcanized rubber
EN 705:1994, Plastics piping systems  Glass-reinforced thermosetting plastics (GRP) pipes and fittings 
Methods for regression analysis and their use
EN 761, Plastics piping systems  Glass-reinforced thermosetting plastics (GRP) pipes  Determination of the
creep factor under dry conditions
EN 978, Underground tanks of glass-reinforced plastics (GRP)  Determination of factor alpha and factor beta
EN 1119 Plastics piping systems  Joints for glass-reinforced thermosetting plastics (GRP) pipes and fittings 
Test methods for leaktightness and resistance to damage of flexible and reduced-articulation joints
EN 1120, Plastics piping systems  Glass-reinforced thermosetting plastics (GRP) pipes and fittings 
Determination of the resistance to chemical attack from the inside of a section in a deflected condition
EN 1226, Plastics piping systems  Glass-reinforced thermosetting plastics (GRP) pipes  Test method to prove
the resistance to initial ring deflection
EN 1228:1996, Plastics piping systems  Glass-reinforced thermosetting plastics (GRP) pipes  Determination
of initial specific ring stiffness
EN 1393, Plastics piping systems  Glass-reinforced thermosetting plastics (GRP) pipes  Determination of
initial longitudinal tensile properties
EN 1394, Plastics piping systems  Glass-reinforced thermosetting plastics (GRP) pipes  Determination of
initial apparent circumferential tensile strength
EN 1447, Plastics piping systems  Glass-reinforced thermosetting plastics (GRP) pipes  Determination of
long-term resistance to internal pressure
EN 1796:2006, Plastics piping systems for water supply with or without pressure — Glass-reinforced thermosetting
plastics (GRP) based on unsaturated polyester resin (UP)
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CEN/TS 14632:2006 (E)
EN 14364:2006, Plastics piping systems for drainage and sewerage with or without pressure — Glass-reinforced
thermosetting plastics (GRP) based on unsaturated polyester resin (UP) — Specifications for pipes, fittings and
joints
EN ISO 3126, Plastics piping systems — Plastics components — Determination of dimensions (ISO 3126:2005)
ISO 7432, Glass-reinforced thermosetting plastics (GRP) pipes and fittings  Test methods to prove the design of
locked socket-and-spigot joints, including double-socket joints, with elastomeric seals
ISO 8483, Glass-reinforced thermosetting plastics (GRP) pipes and fittings  Test methods to prove the design of
bolted flange joints
ISO 8533, Glass-reinforced thermosetting plastics (GRP) pipes and fittings  Test methods to prove the design of
cemented or wrapped joints
ISO 10468, Glass-reinforced thermosetting plastics (GRP) pipes  Determination of the long-term specific ring
creep stiffness under wet conditions and calculation of the wet creep factor
ISO 10471, Glass-reinforced thermosetting plastics (GRP) pipes  Determination of the long-term ultimate
bending strain and the long-term ultimate relative ring deflection under wet conditions
ISO 14828, Glass-reinforced thermosetting plastics (GRP) pipes  Determination of the long-term specific ring
relaxation stiffness under wet conditions and calculation of the wet relaxation factor
3 Terms, definitions and abbreviations
For the purposes of this Technical Specification, the terms, definitions and abbreviations given in EN 14364:2006
and EN 1796:2006 and the following apply.
3.1 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, audit testing and/or 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/or products
3.1.4
quality system
organizational structure, responsibilities, procedures, processes and resources for implementing quality
[4]
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
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CEN/TS 14632:2006 (E)
3.1.6
acceptable quality level
(AQL)
when a continuous series of lots or batches is considered, the quality level which for the purposes of sampling
[5]
inspection is the limit of a satisfactory process average (see ISO 2859-1 and ISO 3951)
NOTE The designation of an AQL does not imply that a manufacturer has the right knowingly to supply any non conforming
unit of product.
3.1.7
preliminary type test
(PTT)
test carried out by or on behalf of the manufacturer to prove that a material, component, joint or assembly is
capable of conforming to the relevant requirement
3.1.8
initial type test
(ITT)
test 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 components, which has to be satisfactorily completed before the
batch can be released
3.1.10
reduced long-term test
(RLTT)
test using shorter time periods than those specified for the long-term test. The RLTT results are to be compared to
the results from the long-term test to verify that the current performance of a material or component conforms to the
initially established long-term performance
3.1.11
process verification test
(PVT)
test performed by or on behalf of the manufacturer on materials, components, joints or assemblies at specified
intervals to confirm that the process continues to be capable of producing components conforming to the
requirements given in relevant standards
NOTE Such tests are not required to release batches of components and are carried out as a means of process control.
3.1.12
audit test
(AT)
test performed by, or on behalf of the certification body to confirm that a material, component, joint or assembly
continues to conform to the requirements of the relevant standard and to provide information to assess the
effectiveness of the quality system (see 3.1.4)
3.1.13
witnessed test
(WT)
test accepted by the certification body for initial type testing (ITT) (see 3.1.8) and/or audit testing (AT) (see 3.1.12),
which is carried out by, or on behalf of, the manufacturer and supervised by a representative of the certification
body who is qualified in testing
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CEN/TS 14632:2006 (E)
3.1.14
indirect test
(IT)
test performed by the manufacturer using a different parameter and/or test method from that specified, for which
the correlation with the specified parameter or test has been verified
3.1.15
batch
clearly identifiable collection of units, manufactured consecutively or continuously under the same conditions, using
material conforming to the same specification
3.1.16
lot
clearly identifiable sub-division of a batch for inspection purposes (see 3.1.15)
3.1.17
group
collection of similar components from which samples are selected for testing purposes
3.1.18
sample
one or more units drawn from a batch (see 3.1.15) or a lot (see 3.1.16) selected at random without regard to quality
NOTE The number of units in the sample is the sample size.
3.1.19
inspection level
[5]
relationship between the lot or batch size and the sample size (see ISO 2859-1 )
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.
NOTE 2 In the French language the abbreviation for "acceptable quality level" (AQL) is NQA, however for the purposes of
this Technical Specification for all three languages the same abbreviation (AQL) is used.
AQL en: acceptable quality level
fr: niveau de qualité‚ acceptable
de: annehmbares Qualitätsniveau
AT en: audit test
fr: essai d'audit
de: Überwachungsprüfung
BRT en: batch release test
fr: essai de libération de campagne de fabrication
de: Freigabeprüfung einer Charge
IT en: indirect test
fr: essai indirect
de: indirekte Prüfung
ITT en: initial type test
fr: essai de type initial
de: Erst-Typprüfung
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CEN/TS 14632:2006 (E)
PTT en: preliminary type test
fr: essai de type préliminaires
de: vorausgehende Typprüfung
PVT en: process verification test
fr: essai de vérification du procédé de fabrication
de: Prozessüberprüfung
RLTT en: reduced long-term test
fr: essai à long terme écourté
de: verkürzte Langzeitprüfung
WT en: witnessed test
fr: essai de témoins
de: beaufsichtigte Prüfung
4 Requirements
4.1 General
4.1.1 The materials, pipes, fittings and joints shall conform to the requirements in the referring standard taking
into account the applicable AQL. The quality plan shall show how an AQL of 6,5 % will be achieved.
4.1.2 Pipes, fittings and joints shall be produced by the manufacturer under a quality system including a quality
plan.
4.2 Testing and inspection
4.2.1 General
4.2.1.1 Records of inspection and test
Records should be maintained for a minimum of ten years or as required by national regulations.
4.2.1.2 Indirect testing
Generally, testing shall be performed according to the test method referred to in the relevant standard. Indirect
testing may be used for the BRT and PVT characteristics as indicated in 4.2.3.1 and 4.2.3.2. Indirect testing shall
not be applied to type testing. The correlation or safe relationship of the indirect testing to the specified testing shall
be documented in the manufacturer's quality plan and if third party certification is involved the IT shall be accepted
by the certification body. The continuing validity of the indirect testing shall be checked at regular intervals. In cases
of dispute the test methods referred to in the relevant standard shall be used for BRT or PVT, using RLTT where
applicable.
4.2.1.3 Testing classification
In the relevant standard, reference is made to type tests and quality control tests. These are classified as follows:
a) type tests:
1) preliminary type tests (PTT);
2) initial type tests (ITT);
3) audit tests (AT).
b) quality control tests:
1) batch release tests (BRT);
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CEN/TS 14632:2006 (E)
2) process verification tests (PVT).
4.2.1.4 Sampling
4.2.1.4.1 General
Where different concepts of design or production are used then these are different products and shall be treated
separately.
4.2.1.4.2 Sampling for type testing
For type test purposes (see 4.2.1.3 and 4.2.2) samples shall be obtained from type test groups defined by the
conditions in Table 1.
Table 1 — Groups for type test purposes
Group Limitation of groups
1 100 ≤ DN < 600
0,5
2 DN ≥ 600 and DN × PN ≤ 3 800
0,5
3 DN ≥ 600 and DN × PN > 3 800

If, when using the above groupings, there is only one product in a type test group then that product may be
included in an adjacent group.
When two or more type test groups are manufactured the full range of long-term type tests (see Table 3 and
Table 4) shall be performed on products from one group. The other type test group(s) may be covered by RLTT.
Grouping does not apply to joints (see Table 4).
4.2.1.4.3 Sampling for quality control testing
For quality control test purposes samples shall be obtained from either groups or individual products. A quality
control group consists of a range of:
 diameter (DN)
 stiffness (SN)
 pressure class (PN)
An individual product consists of
 a particular diameter
 having a particular stiffness
 and a particular pressure class
When quality control grouping is used, the manufacturer shall document his grouping system based on his process
and production activity. The grouping plan shall assure that over an extended period of time, as defined by the
manufacturer in his quality plan, all products produced are sampled.
4.2.1.5 Sample size and sampling rate
The sample size to be used for either of the testing classes in 4.2.1.4 is detailed in the relevant standard when the
characteristic is specified. For batch release testing the sampling size and sampling rate shall conform to the
requirements detailed in 4.2.3.1.
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CEN/TS 14632:2006 (E)
4.2.2 Type tests
4.2.2.1 General rules
Type tests shall be conducted in accordance with the requirements and rules given in Annex B and, as applicable,
the requirements given in 4.2.2.2 to 4.2.2.5 inclusive.
4.2.2.2 Preliminary type testing (PTT)
The manufacturer shall demonstrate conformance to the characteristics given in Table 2, Table 3 and Table 4 that
require PTT. In addition, the relevant preliminary type test(s) are to be carried out by the manufacturer whenever
there is a change, other than routine in-process adjustments, in material, design or process (see Annex C).
Reduced long-term tests as detailed in 4.2.2.5 may be used for satisfying the preliminary type test requirements.
The characteristics listed in Table 2, Table 3 and Table 4 shall be tested using sample sizes meeting the
requirements for type tests in the relevant standard.
Table 2  Characteristics for preliminary (PTT) and initial type test (ITT) —
Characteristics covered by a certificate of conformity to the pipe-
manufacturer's specification from the material producer
General
Characteristic Sampling requirements for ITT
Reinforcements
Thermosetting resins
Fillers
Aggregates Not applicable
Thermoplastic liners
Elastomers
Metals

Table 3  Characteristics for preliminary (PTT) and initial type test (ITT) —

Characteristics declared by the manufacturers
Design
a
Characteristic Sampling requirements for ITT
Wall construction Not applicable
Wall thickness Not applicable
a
  The wall construction (the sequence and composition of the individual layers comprising the pipe wall) shall be
documented by the manufacturer. The manufacturer shall translate the product design into detailed process

specifications to control the amount and placement of materials components.

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CEN/TS 14632:2006 (E)
Table 4  Characteristics for preliminary (PTT) and initial type test (ITT) -
Characteristics verified by test
Characteristic Test method Sampling Requirements for ITT
Pipes
Specified diameters EN ISO 3126
a
Dry creep factor EN 761
Three samples per group
Wall thickness EN ISO 3126
Length EN ISO 3126
Initial specific ring stiffness EN 1228
Creep or relaxation factor under wet conditions ISO 10468 or
RLTT on one DN
ISO 14828
a
α and β factors EN 978 Three samples per group
Resistance to initial ring deflection EN 1226 Three samples per group
Resistance to long-term ultimate ring deflection ISO 10471 RLTT on one DN
Initial longitudinal tensile properties EN 1393 Three samples per group
Initial failure pressure EN 1394 Three samples per group
Long-term failure pressure EN 1447 RLTT on one DN
Resistance to strain corrosion for sewer pipe only EN 1120 RLTT on one DN
Fittings
Fittings general
b
Mechanical characteristics of fittings See RLTT and grouping according to
Table 1
b
Long-term chemical resistance of fittings for sewer See RLTT on one DN
application only
Bends
Fitting angle and angular tolerances EN ISO 3126
Length EN ISO 3126
Branches
Length EN ISO 3126
Reducers One component to be tested
Wall thickness EN ISO 3126
Length EN ISO 3126
Flanged adaptors
Wall thickness EN ISO 3126
Length EN ISO 3126
Joints
Flexible joints with elastomeric sealing components EN 1119
c
Locked socket and spigot joints with elastomeric sealing ISO 7432
components
One joint per design
c
Wrapped and cemented joints ISO 8533
c
Bolted flange joints ISO 8483
a
These characteristics are not required by the system standards, but are necessary to assess changes.
b
When a manufacturer makes fittings using pipes of the same classification with which the fittings are to be used, the initial and preliminary
type tests for the pipes covering mechanical and chemical characteristics cover these fittings.
c
An alternate bending test procedure for evaluating joints capable of bearing end trust loading is given in EN 1796 and EN 14364.

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SIST-TS CEN/TS 14632:2007
CEN/TS 14632:2006 (E)
4.2.2.3 Permitted special procedure
Where a factory, factory A, uses the same manufacturing procedures, raw materials and design (see Annex C) as
another factory, factory B, then data from factory B may be used by factory A to demonstrate conformity to the
long-term properties subject to all the following conditions:
a) the data provided by factory B fulfil the conditions in 4.2.2.1 and factory A performs RLTT (see 4.2.2.6) to
confirm that both factories products have the same long-term properties;
b) if a third party certifying body is involved it shall be informed prior to conducting the RLTT that these
procedures are being used to satisfy the PTT requirements.
The pro
...