CEN/TS 1555-7:2013

SLOVENSKI STANDARD
01-april-2013
1DGRPHãþD
SIST-TS CEN/TS 1555-7:2003
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-Rohrleitungssysteme für die Gasversorgung - Polyethylen (PE) - Partie 7 :
Empfehlungen für die Beurteilung der Konformität
Systèmes de canalisations en plastique pour la distribution de combustibles gazeux -
Polyéthylène (PE) - Teil 7: Guide pour l'évaluation de la conformité
Ta slovenski standard je istoveten z: CEN/TS 1555-7:2013
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
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

TECHNICAL SPECIFICATION
CEN/TS 1555-7
SPÉCIFICATION TECHNIQUE
TECHNISCHE SPEZIFIKATION
January 2013
ICS 23.040.01; 91.140.40 Supersedes CEN/TS 1555-7:2003
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 plastique pour la distribution Kunststoff-Rohrleitungssysteme für die Gasversorgung -
de combustibles gazeux - Polyéthylène (PE) - Partie 7: Polyethylen (PE) - Teil 7 : Empfehlungen für die
Guide pour l'évaluation de la conformité Beurteilung der Konformität
This Technical Specification (CEN/TS) was approved by CEN on 11 September 2012 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, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United
Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2013 CEN All rights of exploitation in any form and by any means reserved Ref. No. CEN/TS 1555-7:2013: E
worldwide for CEN national Members.

Contents Page
Foreword . 3
Introduction . 4
1 Scope . 6
2 Normative references . 6
3 Terms and definitions . 7
4 Abbreviated terms . 10
5 General . 10
6 Testing and inspection . 10
6.1 Grouping . 10
6.1.1 General . 10
6.1.2 Size groups. 11
6.1.3 Fitting groups . 11
6.1.4 Fitting types . 11
6.2 Type testing . 11
6.3 Batch release tests . 19
6.4 Process verification tests . 22
6.5 Audit tests . 25
6.6 Indirect tests . 28
6.7 One-off products and products produced in very low quantity . 28
6.8 Large diameter products. 28
6.9 Documentation . 29
6.9.1 Type test results . 29
6.9.2 Test records . 29
6.9.3 Technical file for certification purposes . 29
Annex A (normative) Change of compound . 30
A.1 General . 30
A.2 Change . 30
A.2.1 Change of base polymer . 30
A.2.2 Change of grade . 30
A.2.3 Change of pigment . 30
A.2.4 Change of additives other than pigments . 30
A.3 Type testing required for re-evaluation . 30
A.3.1 Changes A.2.1 and A.2.3.1 . 30
A.3.2 Changes A.2.2.1, A.2.2.2, A.2.2.3, A.2.3.2, A.2.4.1, A.2.4.2 and A.2.4.3 . 31
Annex B (informative) Basic test matrix for PE compounds and piping products. 32
Bibliography. 34

Foreword
This document (CEN/TS 1555-7:2013) 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 [and/or CENELEC] shall not be held responsible for identifying any or all such patent rights.
This document supersedes CEN/TS 1555-7:2003.
EN 1555 is composed of the following parts:
 EN 1555-1, Plastics piping systems for the supply of gaseous fuels  Polyethylene (PE)  Part 1:
General;
 EN 1555-2, Plastics piping systems for the supply of gaseous fuels  Polyethylene (PE)  Part 2: Pipes;
 EN 1555-3, Plastics piping systems for the supply of gaseous fuels  Polyethylene (PE)  Part 3:
Fittings;
 EN 1555-4, Plastics piping systems for the supply of gaseous fuels  Polyethylene (PE)  Part 4:
Valves;
 EN 1555-5, Plastics piping systems for the supply of gaseous fuels  Polyethylene (PE)  Part 5:
Fitness for purpose of the system;
 CEN/TS 1555-7, Plastics piping systems for the supply of gaseous fuels — Polyethylene (PE) — Part 7:
Guidance for the assessment of conformity (the present Technical Specification).
This issue of CEN/TS 1555-7 takes into account the technical changes made in the revision of EN 1555-1, -2,
-3, -5 and -4, published in 2010 and respectively in 2011. Guidance for the assessment of conformity given in
this document has been revised to reflect the changes made to test methods and requirements given in EN
1555-1, -2, -3, -4 and -5. Two new types of pipe have been introduced, i.e. coextruded pipes and peelalable
layer pipes. The sampling procedures and sampling frequencies for these types of pipes have been
introduced into the tables for TT, BRT, PVT and AT tests for pipes.
According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following
countries are bound to announce this Technical Specification: Austria, Belgium, Bulgaria, Croatia, Cyprus,
Czech Republic, Denmark, Estonia, Finland, Former Yugoslav of Macedonia, France, Germany, Greece,
Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal,
Romania, 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 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 part of EN 1555 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, pipes, fittings, valves, 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, pipes, fittings, valves, 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 Technical Specification gives guidance for the assessment of conformity of compounds, products, joints
and assemblies in accordance with the applicable part(s) of EN 1555 intended to be included in the
manufacturer’s quality plan as part of the quality management system and for the establishment of certification
procedures.
It is recommended that the quality management system conforms to or is no less stringent than the relevant
requirements to EN ISO 9001 [2].
NOTE 1 If certification is involved, the certification and inspection body is preferably compliant with EN 45011 [3],
EN 45012 [4] or EN ISO/IEC 17020 [5], as applicable.
In conjunction with Parts 1 to 5 of EN 1555 (see Foreword), this Technical Specification is applicable to
polyethylene (PE) plastics piping systems for the supply of gaseous fuels. 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 2 For other operating temperatures, derating coefficients can be used; see EN 1555-5.
For mechanical fittings conforming to ISO 10838-1 [6], ISO 10838-2 [7] or ISO 10838-3 [8], as applicable,
guidance for assessment of conformity is not given in this part of EN 1555. When requested, a quality plan
based on the tests mentioned in ISO 10838-1 [6], ISO 10838-2 [7] or ISO 10838-3 [8], 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 3 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
The following documents, in whole or in part, are normatively referenced in this document and are
indispensable for its application. For dated references, only the edition cited applies. For undated references,
the latest edition of the referenced document (including any amendments) applies.
EN 1555-1:2010, Plastics piping systems for the supply of gaseous fuels  Polyethylene (PE)  Part 1:
General
EN 1555-2:2010, Plastics piping systems for the supply of gaseous fuels  Polyethylene (PE)  Part 2:
Pipes
EN 1555-3:2010, Plastics piping systems for the supply of gaseous fuels  Polyethylene (PE)  Part 3:
Fittings
EN 1555-4:2011, Plastics piping systems for the supply of gaseous fuels  Polyethylene (PE)  Part 4:
Valves
EN 1555-5:2010, Plastics piping systems for the supply of gaseous fuels  Polyethylene (PE)  Part 5:
Fitness for purpose of the system

1) 1 bar = 0,1 MPa.
EN ISO 6259-1, Thermoplastics pipes ― Determination of tensile properties ― Part 1: General test method
(ISO 6259-1)
EN ISO 12162, Thermoplastics materials for pipes and fittings for pressure applications  Classification,
designation and design coefficient (ISO 12162)
EN 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 13477)
3 Terms and definitions
For the purposes of this document, the following terms and definitions given in EN 1555-1:2010,
EN 1555-2:2010, EN 1555-3:2010, EN 1555-4:2011 and EN 1555-5:2010 and the following apply.
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 compliant with EN 45011 [3].
3.2
inspection body
body that performs inspection
Note 1 to entry: A body can be an organisation or part of an organisation.
Note 2 to entry: An inspection body is 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
materials and products
Note 1 to entry: In the context of this part of EN 1555, the materials 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 compliant with EN ISO/IEC 17025[9].
3.4
quality management system
management system to direct and control an organisation with regard to quality
Note 1 to entry: Requirements for quality management systems are given in EN ISO 9001 [2].
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 compound or products, which needs 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 compound or products or joints or assemblies at
specific intervals to confirm that type tests originally performed on the compound or products or joints or
assemblies continue to be valid and 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 carried out as a measure of process control and are not related to release of batches
of compound or products.
3.9
audit test
AT
test performed by a test laboratory on behalf of an inspection body or certification body to confirm that the
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
composition grouped by families, expressed by generic names, e.g. 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
clearly defined homogenous mixture of base polymer with additives, i.e. antioxidants, pigments, stabilisers
and others, at a dosage level necessary for the processing and the intended use of the final product
3.14
material batch
clearly identified quantity of a given homogeneous compound manufactured continuously under uniform
conditions and defined and identified by the compound manufacturer
3.15
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
3.16
product batch
clearly identified collection of products, manufactured consecutively or continuously under the same
conditions, using the same compound conforming to the same specification
Note 1 to entry: The product batch is defined and identified by the product manufacturer.
3.17
lot
clearly identifiable sub-division of a batch for inspection purposes
3.18
sample
one or more products drawn from the same production batch or lot, selected at random without regard to their
quality
Note 1 to entry: The number of products in the sample is the sample size.
Note 2 to entry: The number of test pieces required for each test are taken from the sample. This information is given
in this document, in the product standard, or in the relevant test method standard.
3.19
group
collection of similar products from which samples are selected for testing purposes
3.20
component
product manufactured out of a specific composition or compound, brought to the market as part of another
product or as a spare part
Note 1 to entry: Components are considered as products and are individually approved (e.g. o-rings and gaskets), or
they are tested as integral part of a finished product (e.g. in a valve).
3.21
joint
connection between two or more products
3.22
assembled product
assembled final product using two or more single parts
3.23
assembly
unit of two or more products assembled for testing purposes
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 to be made
EXAMPLE A specific plan which indicates the type of test, 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.
3.26
body type
generic description of a body
EXAMPLE A valve body of a particular design, which can have different end connections.
3.27
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.
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
PVT en : process verification test
fr : essai de vérification du procédé de fabrication
de : Prozessüberprüfung
TT en : type test
fr : essai de type
de : Typprüfung
WT en : witness test
fr : essai témoin
de : Prüfung unter Aufsicht
5 General
5.1 Compounds, products, joints and assemblies shall conform to the requirements given in EN 1555-1,
EN 1555-2, EN 1555-3, EN 1555-4, and EN 1555-5.
5.2 Products and assemblies shall be produced by the manufacturer under a quality management system
which includes a quality plan.
6 Testing and inspection
6.1 Grouping
6.1.1 General
For the purposes of this Technical Specification, the groups specified in 6.1.2 and 6.1.3 apply.
6.1.2 Size groups
Three size groups are defined for pipes and fittings, as given in Table 1. For testing purposes, one individual
nominal diameter, d , shall be selected from each group.
n
Table 1 — Size groups
Size group Nominal diameter, d
n
mm
d < 75
n
75 ≤ d < 250
n
250 ≤ d ≤ 630
n
6.1.3 Fitting groups
Three groups of fittings each having a similar design are defined, as given in Table 2.
For testing purposes, one individual fitting shall be selected from each group.
Table 2 — Fitting groups
Fitting groups Fitting type
(A) Electrofusion socket fitting
(B) Electrofusion saddle fitting
(C) Spigot end fitting
6.1.4 Fitting types
Fitting groups are divided in fitting types.
Fitting group (A) includes the following fitting types: Electrofusion couplers, electrofusion 45° elbows,
electrofusion 90° elbows, electrofusion tees, electrofusion reducers, electrofusion end caps, etc.
Fitting group (B) includes the following fitting types: Electrofusion tapping saddles, electrofusion branch
saddles, etc.
Fitting group (C) includes the following fitting types: 45° elbows, 90° elbows, tees, reducers, end caps, etc.
6.2 Type testing
Relevant TTs shall be carried out whenever there is a change in design, in compound or production method,
other than routine in-process adjustments, and/or whenever there is an extension of the product range or
change of production site.
Relevant tests selected from the type testing tables for the product concerned to be carried out when a
change of the production site occurs should be defined by the manufacturer. If certification is involved the
scheme should be agreed between the parties concerned.
Type tests shall demonstrate that the products conform to all requirements for the characteristics given in
Tables 3 to 6, as applicable.
In case of change in compound as defined in A.2, relevant type testing requirements as defined in A.3, and in
Tables 3 to 6 as applicable, shall apply.
For the purposes of a change in design, the following characteristics are relevant:
a) dimensions and geometry (see column D1 of Tables 5 and 6), as: change of visual and functional
optimisations, change of overall dimensions, change of a non-PE part;
b) joint affected part (see column D2 of Tables 5 and 6), 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 production range, the relevant characteristics given in Table 5 and Table 6, column E,
as applicable, shall be retested. If third party certification is involved, retesting shall be agreed between the
certification body and the manufacturer.
Table 3 — Characteristics of compounds that require type testing (TT) by the compound manufacturer
Reference to part,
clause or
Characteristic Sampling procedure
subclause of
EN 1555
Compound density -1:2010-4.2.3.1 3 samples/ compound
Oxidation induction time -1:2010-4.2.3.1 3 samples/ compound
(thermal stability)
Melt mass-flow rate (MFR) -1:2010-4.2.3.1 3 samples/ compound
Volatile content -1:2010-4.2.3.1 1 sample/ compound
a
Water content -1:2010-4.2.3.1 1 sample/ compound
b
Carbon black content -1:2010-4.2.3.1 3 samples/ compound
b
Carbon black dispersion -1:2010-4.2.3.1 1 sample/ compound
c
Pigment dispersion -1:2010-4.2.3.1 1 sample/ compound
Resistance to gas condensate -1:2010-4.2.3.2 1 sample/ compound
d
Resistance to weathering -1:2010-4.2.3.2 Once/compound
Resistance to rapid crack -1:2010-4.2.3.2 Number of test pieces shall conform to
e
propagation (critical pressure, EN ISO 13477, Once/compound
p ) (e ≥ 15 mm)
c
-5:2010-5 Number of pieces shall conform to
EN ISO 13477, Once/compound
e
Resistance to slow crack -1:2010-4.2.3.2 3 test pieces/ compound
growth (d : 110 mm SDR 11)
n
Determination of the failure -1:2010-4.3.1 3 samples/ compound
mode in a tensile test on a
-1:2010-4.3.2 3 samples/ compound
buttfusion weld (d : 110 mm
n
SDR 11)
Classification -1:2010-4.4 Shall conform to EN ISO 12162,
Once/compound
a
Only applicable if the requirement for volatile content is not conformed to. In case of dispute the
requirement for water content shall apply.
b
Only applicable for black compound.
c
Only applicable for non black compound.
d
Three pieces for elongation at break/ Three pieces for hydrostatic strength / One sample for decohesion of
an electrofusion joint.
e
Resistance to RCP and slow crack growth shall be measured on pipe made from the same compound
batch.
Table 4 — Characteristics of pipes, including coextruded pipes and peelable layer pipes that require
type testing (TT) (1 of 2)
Reference Conditions
Sampling procedure
a
to part,
requiring test
j
Characteristic clause or
subclause
b b c
N D M E
Manufacturer Certification body
of EN 1555
1 test piece of each 1 test piece of one
Appearance -2:2010-5.1
+ + + +
diameter diameter/ size group
1 test piece of each 1 test piece of one
Colour -2:2010-5.2
+ + + +
diameter diameter/ size group
Geometrical characteristics -2:2010-6
+ - + + 1 test piece of each 1 test piece of one
diameter diameter/ size group
g
Circumferential reversion -2:2010-6.4
+ - + + 1 test piece of each 1 test piece of one
diameter/ size group 3 diameter/ size group 3
Hydrostatic strength -2:2010-7.2
3 test pieces of one 3 test pieces of one
g
+ - + +
(20 °C, 100 h) diameter/size group diameter/ size group
Hydrostatic strength -2:2010-7.2
3 test pieces of one 3 test pieces of one
g
+ - + +
(80 °C, 1 000 h)
diameter/size group diameter/ size group
Elongation at break -2:2010-7.2
Number of samples shall Number of samples shall
g
+ - + +
conform to EN ISO 6259-1, conform to EN ISO 6259-1,
One diameter/size group One diameter/ size group
3 test pieces of one 3 test pieces of one
Resistance to slow crack -2:2010-7.2
g
diameter/size group diameter/ size group
growth e ≤ 5 mm (Cone + - + +
test)
Resistance to slow crack -2:2010-7.2 3 test pieces of one 3 test pieces of one
g diameter/size group diameter/ size group
growth e > 5 mm (Notch
+ - +
+
test)
Number of samples shall Number of samples shall
Resistance to rapid crack -2:2010-7.2
conform to EN ISO 13477 confirm EN ISO 13477 of
propagation (critical + + + +
e f of one diameter one diameter
pressure, p )
c
1 sample of one diameter/ 1 sample of one diameter/
Oxidation induction time -2:2010-8.2
+ - + -
i
size group size group
(Thermal stability)
i 1 sample of one diameter/ 1 sample of one diameter/
-2:2010-8.2
Melt mass-flow rate (MFR)
+ - + -
size group size group
d
-2:2010-8.2 1 sample of one diameter/ 1 sample of one diameter/
Longitudinal reversion
+ - + +
size group size group
Marking -2:2010-10.2 1 sample of each diameter By checking the test result
+ - + -
of the manufacturer
Resistance to weathering -2:2010-8.2 Tested on the compound in the form of pipe by the compound supplier
Tensile strength for butt -5:2010- 1 sample of one diameter/ By checking the test results
fusion 4.2.2.1 + - + - size group 2 of the manufacturer

Table 4 (2 of 2)
Reference Conditions
a
Sampling procedure
to part, requiring test
j
Characteristic clause or
b b c
subclause
N D M E Manufacturer Certification body
of EN 1555
Tensile strength for buttfusion -5:2010- 1 sample of one diameter/ By checking the test results
4.2.2.2 + - + - size group 2 of the manufacturer
By checking the test results
Squeeze off -2:2010- 1 sample of one diameter
g h
Annex C + - + - of the manufacturer
Additional tests for coextruded pipes
1 sample of one diameter/
Integrity of the structure after -2:2010-A.7 1 sample of each diameter
+ - + + size group
deflection
Additional tests for peelable layer pipes
k
1 sample of one diameter/
Resistance to weathering -2:2010-B.3 1 sample of one diameter/
+ + + - peelable layer formulation peelable layer formulation
a
N : new system;
D : only applicable for change of thickness of peelable layer, and change of material type or adhesive (if used) for the peelable layer;
M : change of compound;
E : extension of the product range (except the products already covered by the scheme of sampling procedure);
+ : test to be carried out;
- : test not to be carried out.
b
Successful testing will validate pipe with the same d and a higher SDR, i.e. thinner wall thickness. Where a manufacturer extends his
n
production beyond his approval, additional relevant type testing shall be carried out.
c
Recommended sampling procedure for a testing laboratory working on behalf of a certification body. Testing undertaken in manufacturer's
laboratory shall be taken into account, by prior agreement with the certification body.
d
Longitudinal reversion is applicable to wall thickness < 16 mm.
e
For pipes and the base pipe of peelable layer pipes, if applicable (see Table 4 of EN 1555-2:2010).
f
Applicable for coextruded pipes, and for peelable layer pipes tested with the external layer.
g
Sampling procedure of one diameter.
h
To be performed preferably on d 63 SDR 11.
n
i
Applicable for each layer of coextruded pipe.
j
All characteristics except marking are applicable for the base pipe of peelable layer pipe without the layer. Appearance, colour,resistance
to rapid crack propagation, resistance to weathering, and marking are also applicable to peelable layer pipes including the layer.
k
Weathering of the base pipe is assessed in accordance with EN 1555-1:2010. The weathering of peelable layer pipe with the layer is
assessed by testing three test pieces for elongation at break/ three test pieces for hydrostatic strength / one sample for decohesion of an
electrofusion joint.
Table 5 — Characteristics of fittings that require type testing (TT) (1 of 2)
Reference Conditions requiring
Sampling procedure
a
to part, test
clause or
c
Characteristic
subclause
b
N D1 D2 M E Manufacturer Certification body
of EN
Appearance 5 test pieces/ 5 test pieces of one diameter/
-3:2010-
+ − − + +
g
size/fitting type size group/ fitting type
5.1
-3:2010- 5 test pieces/ 5 test pieces of one diameter/
Colour + − − + +
g
5.2 size/fitting type size group/ fitting type
Electrical 5 test pieces/ 5 test pieces of one diameter/
-3:2010-
g
characteristics    + − + - + size/fitting type size group/ fitting type
5.5
(A) (B)
Geometrical 5 test pieces/ 5 test oieces of one diameter/
-3:2010-6 + + + + +
g
characteristics size/fitting type size group/ fitting type
Hydrostatic strength 3 test pieces/ size/ 3 test pieces of one diameter/
-3:2010-
f
+ − − + +
g i j k i j k
fitting type size group/ fitting type
7.2
(20ºC,100 h)
Hydrostatic strength 1 test piece/ size By checking the test results of
-5:2010-
h
group/ fitting type the manufacturer
(80 °C, 165 h) + − + + −
4.2.2
(C)
Hydrostatic strength 3 test pieces/ size/ 3 test pieces of one diameter/
-3:2010-
f
+ − + + +
g i j k i j k
fitting type size group/ fitting type
7.2
(80ºC,1 000 h)
-3:2010- 1 test piece/ size/ 1 test piece of one diameter/size
7.2 fitting type/ group/ fitting type/ condition

f
+ − + + +
g
condition
Decohesive -5:2010-
4.2.3.1
resistance
(A)
1 test piece/ size/ 1 test piece of one diameter/size
-5:2010-
f
+ − + + + fitting type/ group/ fitting type/ condition
4.2.3.2
g
condition
-3:2010- 1 test piece/ size/ 1 test piece of one diameter/size
l
7.2 fitting type/ group/ fitting type/ condition

f
Evaluation of
+ − + + +
g l
condition
-5:2010-
ductility of fusion
4.2.3.1
joint interface
1 test piece/ size/ 1 test piece of one diameter/size
(B) -5:2010-
I
f
+ − + + + fitting type/ group/ fitting type/ condition
4.2.3.2
g l
condition
-3:2010- 1 test piece/ size
7.2 group / fitting group/
By checking the test results of
+ − − + +
condition
Tensile strength the manufacturer
-5:2010-
h
4.2.2.1
for butt fusion
(C)
1 test piece/ size
-5:2010- By checking the test results of
+ − − − − group / fitting group/
4.2.2.2 the manufacturer
condition
Impact resistance 1 test piece/ size/ 1 test piece/ size group/ fitting
-3:2010-
f
+ − + + +
fitting type type
7.2
(B)
Pressure drop 1 test piece/ size/
-3:2010- By checking the test results of
+ + − − +
fitting type
7.2 the manufacturer
(B)
Short-term internal 3 test pieces/ size/ 3 test pieces of one diameter/
g i
-3:2010-
i
f
pressure resistance fitting type size group/ fitting type
+ − + + +
7.3
d
(A)
Resistance to tensile -3:2010- 3 test pieces/ size/ 3 test pieces of one diameter/

f
g i
+ − + + +
d i
load (A) 7.3 fitting type size group/ fitting type
Table 5 (2 of 2)
Reference Conditions requiring Sampling procedure
a
to part, test
clause or
b
c
Characteristic Manufacturer Certification body
subclause
N D1 D2 M E
of EN
Oxidation induction 1 sample/ size 1 sample/ fitting group
-3:2010-
time       + − − + − group/ fitting type
8.2
e
(Thermal stability)
Melt mass-flow rate 1 sample/ size 1 sample/ fitting group
-3:2010-
+ − − + −
group/ fitting type
(MFR) 8.2
-3:2010- 5 test pieces/ size/ 5 test piece of one diameter/
Marking + − − + +
g
10.2 fitting type  size group/ fitting type
Fusion system 5 test pieces/ size/
-3:2010-
recognition fitting type
+ − + - + −
10.4
(A) (B)
a
N : new system;
D1 : change of dimensions and geometry as: change of visual and functional optimisation, change of overall dimensions, change of an
non-PE part;
D2 : change of joint affected part as: change of the dimension of the fusion zone (e.g. wire pitch, wire depth), the electrical
characteristics (e.g. wire, resistance), the fusion parameters (e.g. time, voltage);
M : change of compound of the same MRS. In case of change of the MRS, type tests according column (N) shall apply;
E : extension of the fitting range;
+ : test to be carried out;
- : test not to be carried out.
b
Recommended sampling procedure for a testing laboratory working on behalf of a certification body. Testing undertaken in a
manufacturer laboratory shall be taken into account, provided prior acceptance by the certification body.
c
(A): Electrofusion socket fitting;

(B): Electrofusion saddle fitting;
(C): Spigot end fitting.
d
Only applicable if EN 1555-3:2010, 6.2.2 b) applies.
e
Test pieces should be taken from surfaces, especially those forming part of a fusion joint.
f
Manufacturer sampling procedure changed from "size/fitting type" to "2 dimensions/size group/fitting type".
g
Shall contain fittings from each cavity. The minimum number of samples shall be at least one from each cavity.
h
Only applicable to size group 2 and 3.
i
One test piece for size group 3.
j
Aternatively for d > 450 mm, the test can be performed water-in-air. In case of dispute, water-in-water shall be used.
n
k
For fitting type (B), dn > 450 mm alternative testing (eg pressurisation through saddle outlet) allowed.
l
Alternatively for fitting type (B) dn > 450 mm may be checked by the strip bend test according to ISO 21751.

Table 6 — Characteristics of valves that require type testing (TT) (1 of 2)
a
Reference
Conditions requiring test  Sampling procedure
to part,
clause or
Characteristic
b
subclause
N D1 D2 M E Manufacturer Certification body
of EN
+ 5 test pieces/ size/ 5 test pieces of one
-4:2011- +
c
Appearance + 1/2/ − + diameter/ size group/
product type
5.1 1/2/6
6 product type
5 test pieces/ size/ 5 test pieces of one
-4:2011- + +
c
Colour + − + diameter/ size group/
product type
5.2 1/2 1/2
product type
5 test pieces/ size/ 5 test pieces of one
Geometrical + + +
c
-4:2011-6 + + diameter/ size group/
product type
characteristics 2/6 2/6 2/6
product type
3 test pieces/ size/ 3 test pieces of one
Hydrostatic strength -4:2011- + +
c
+ − + diameter/ size group/
product type
(20ºC,100 h) 7.2 ½ 1/2
product type
3 test pieces/ size/ 3 test pieces of one
Hydrostatic strength -4:2011- + +
c
+ + diameter/ size group/
− product type
(80ºC,1 000 h) 7.2 1/2/4 1/2/4
product type
Leaktightness of seat -4:2011- 1 test piece/ body 1 test piece/ body type
+ − + + +
and packing 7.2 type
+ 1 test piece/ size/
-4:2011- 1 test piece/ size/product
Pressure drop + − 1/2/3/ − + product type
7.2 type
-4:2011- 1 test piece/ body 1 test piece/ body type
Operating torque + + + +
−
7.2 type
+ + 1 test piece/ body 1 test piece/ body type
-4:2011-
Stop resistance + − 1/3/5/ 1/3/5/ + type
7.2
6 6
Actuation mechanism -4:2011- + + 1 test piece/ body 1 test piece/ body type
+
− −
resistance 7.2 3/5/6 3/5/6 type
Resistance to + + 1 test piece/ size/ 1 test piece/ size/product
-4:2011-
c
bending between + 1/2/3/ 1/2/3/ + type
−
product type
7.2
supports 4 4
Thermal cycling 1 test piece/ body 1 test piece/ body type
-4:2011-
resistance dn > 63 + − + + + type
7.2
mm
Leaktightness under 1 test piece/ body 1 test piece/ body type
-4:2011-
bending with thermal + − + + + type
7.2
cycling , dn ≤ 63 mm
+ + 1 test piece/ body 1 test piece/ body type
Leaktightness under -4:2011-
+ 1/2/3/ 1/2/3/ + type
−
tensile loading 7.2
4 4
Leaktightness under 1 test piece/ body 1 test piece/ body type
and after bending -4:2011- type
+ − + + +
applied to the 7.2
operating mechanism
Table 6 (2 of 2)
a
Reference Sampling procedure
Conditions requiring test
to part, b
Manufacturer
Certification body
clause or
Characteristic
subclause
N D1 D2 M E
of EN
+ + 1 test piece/ 1 test piece/ body type
-4:2011-
Impact loading resistance + − 1/3/ 1/3/ − body type
7.2
5/6 5/6
Multiple test after the 1 test piece/ 1 test piece/ body type/
f g
body type/ size size group
internal pressure test
group
1) Long term resistance
2) Leaktightness of seat
-4:2011-
and packing 25 mbar
+ + + +
−
3) Leaktightness of seat 7.2
and packing 1,5 MOP
4) Operating torque
5) Impact loading
resistance
Oxidation induction time 1 sample/ size 1 sample/ size group
-4:2011- +
+ − − −
d
8.2 1/2 group
(thermal stability)
Melt mass-flow rate -4:2011- + 1 sample/ size 1 sample/ size group
+ − − −
(MFR) 8.2 1/2 group
1 test piece/ 1 test piece/ size/ product
-4:2011- + +
Marking + + size/ product type
−
10.2 1/2 1/2
type
1 test piece/ size By checking the test
Tensile strength for butt
-5:2010- + +
+ − + group/ product results of the
e
fusion 4.2.1.1 2 2
type manufacturer
1 test piece/ size By checking the test
Tensile strength for butt -5:2010- + +
+ + group/ product results of the
−
e
fusion 4.2.1.2 2 2
type manufacturer
1 test piece/ size By checking the test
Hydrostatic strength -5:2010- + +
+ group/ product results of the
− −
e
c
(80 °C, 165 h) 4.2.2 2 2
type manufacturer
a
N : new system;
D1 : change in design with no effect on valve performance;
D2 : change in design with effect on valve performance;
M : change of compound of the same MRS. In case of change of the MRS, type tests according column (N) shall apply;
E : extension of the valve range;
+ : test to be carried out;
- : test not to be carried out.
The code numbers following the + indicate which modified component of the valve initiate testing:
Code 1 : body
Code 2 : outlets
Code 3 : obturator
Code 4 : sealing element
Code 5 : spindle / drive
Code 6 : actuator
b
Recommended sampling procedure for a testing laboratory working on behalf of a certification body. Testing undertaken in a
manufacturer laboratory shall be taken into account, provided prior acceptance by the certification body.
c
Valves shall contain components from each PE cavity. The minimum number of samples shall be at least one from each cavity.
d
Test pieces should be taken from surfaces, especially those formi
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