SIST ENV 1452-6:2002

SLOVENSKI STANDARD
01-junij-2002
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Plastics piping systems for water supply - Unplasticized poly(vinyl chloride) (PVC-U) -
Part 6: Guidance for installation
Kunststoff-Rohrleitungssysteme für die Wasserversorgung - Weichmacherfreies
Polyvinylchlorid (PVC-U) - Teil 6: Empfehlungen für die Verlegung
Systemes de canalisations en plastique pour l'alimentation en eau - Poly(chlorure de
vinyle) non plastifié (PVC-U) - Partie 6: Guide pour la pose
Ta slovenski standard je istoveten z: ENV 1452-6:2001
ICS:
23.040.01 Deli cevovodov in cevovodi Pipeline components and
na splošno pipelines in general
91.140.60 Sistemi za oskrbo z vodo Water supply systems
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN PRESTANDARD
ENV 1452-6
PRÉNORME EUROPÉENNE
EUROPÄISCHE VORNORM
November 2001
ICS 91.140.60
English version
Plastics piping systems for water supply - Unplasticized
poly(vinyl chloride) (PVC-U) - Part 6: Guidance for installation
Systèmes de canalisations en plastique pour alimentation Kunststoff-Rohrleitungssysteme für die Wasserversorgung
en eau - Poly(chlorure de vinyle) non plastifié (PVC-U) - - Weichmacherfreies Polyvinylchlorid (PVC-U) - Teil 6:
Partie 6: Guide pour la pose Empfehlungen für die Verlegung
This European Prestandard (ENV) was approved by CEN on 14 November 1999 as a prospective standard for provisional application.
The period of validity of this ENV 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 ENV can be converted into a European Standard.
CEN members are required to announce the existence of this ENV in the same way as for an EN and to make the ENV available promptly
at national level in an appropriate form. It is permissible to keep conflicting national standards in force (in parallel to the ENV) until the final
decision about the possible conversion of the ENV into an EN is reached.
CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece,
Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, 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
© 2001 CEN All rights of exploitation in any form and by any means reserved Ref. No. ENV 1452-6:2001 E
worldwide for CEN national Members.

Contents
Page
Introduction .3
1 Scope.5
2 Normative references.5
3 Definitions, symbols and abbreviations.5
4 Parameters influencing design .5
4.1 Allowable operating pressure .5
4.2 Ring stiffness of pipes .6
4.3 Precautions.7
5 Hydraulic properties.7
5.1 Loss of head.7
5.2 Internal diameter.7
6 Assembly methods.7
6.1 General.7
6.2 Integral rubber ring joints.8
6.3 Solvent cement joints .9
6.4 Mechanical joints .10
7 Cold bending on site .10
8 Storage, handling and transport of pipes .11
8.1 Storage .11
8.2 Handling.12
8.3 Transportation of loose pipes .12
9 Storage, handling and transport of fittings, valves and ancillaries .12
10 Installation.13
10.1 General.13
10.2 Installation below ground.13
10.3 Installation above ground.15
10.4 Installation in ducts .16
11 Site pressure testing .16
11.1 General.16
11.2 Preparation for test.16
11.3 Test pressures.17
11.4 Applying the test .18
11.5 Interpretation of results.18
12 Corrosion protection.18
13 Pressure surge.19
14 Repairs.19
15 Pipeline detection.19
Annex A (informative) Hydraulic flow chart.20
Annex B (normative) Figures and tables referred to in this prestandard .21
Foreword
This European Prestandard 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
collaboration with Eureau and in liaison with CEN/TC 164 "Water supply".
This prestandard 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.
This European Prestandard is a guidance document and gives a recommended practice for the
installation of PVC-U piping systems conveying water under pressure.
EN 1452 consists of the following Parts, under the general title Plastics piping systems for water
supply
Unplasticized poly(vinyl chloride) (PVC-U)

  Part 1: General

 Part 2: Pipes

 Part 3: Fittings

 Part 4: Valves and ancillary equipment

 Part 5: Fitness for purpose of the system

 Part 6: Guidance for installation (this prestandard)

 Part 7: Guidance for the assessment of conformity (ENV).
This prestandard includes the following:

 Annex A (informative): Hydraulic flow chart

 Annex B (normative): Figures and tables

 Bibliography
At the date of publication of this prestandard, Systems Standards for piping systems of other plastics
materials used for the same application are the following:
NOTE All listed System Standards have reached the Enquiry stage or are under preparation.
EN 1796, Plastics piping systems for water supply with or without pressure
Glass-reinforced
thermosetting plastics (GRP) based on polyester resin (UP)
EN 12201, Plastics piping systems for water supply
Polyethylene (PE)
According to the CEN/CENELEC Internal Regulations, the national standards organizations of the
following countries are bound to announce this European Prestandard: Austria, Belgium, Czech
Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg,
Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and the United Kingdom.
Introduction
The System Standard, of which this is Part 6, specifies the requirements for a piping system and its
components when made from unplasticized poly(vinyl chloride) (PVC-U). The piping system is
intended to be used for water supply.
The System Standard also includes guidance for installation (this Part) and for the assessment of
conformity.
1  Scope
This European prestandard gives recommended practices for installation of unplasticized
poly(vinyl chloride) (PVC-U) pipes, fittings, valves and ancillaries when used in piping systems
conveying water under pressure.
The recommendations are intended to give practical guidance for the best methods of design and
installation of piping systems incorporating pipes, fittings, valves and ancillary equipment made from
PVC-U materials and used for the following purposes:
a) water mains and services buried in ground;
b) conveyance of water above ground for both outside and inside buildings,
for the supply of water under pressure at approximately 20 °C (cold water) intended for human
consumption and for general purposes.
This prestandard is also applicable to components for the conveyance of water up to and including
45 °C. For temperatures between 25 °C and 45 °C Figure A.1 of EN 1452-2:1999 applies.
In addition, recommendations are given for the connection to fittings, valves and ancillary equipment
made from materials other than PVC-U.
2  Normative references
This Prestandard 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 Prestandard only when incorporated in it by amendment or revision. For
undated references the latest edition of the publication referred to applies (including amentments).
ENV 1046, Plastics piping and ducting systems — Systems outside building structures for the
conveyance of water or sewage — Guidance for installation above and below ground
EN 1452-1:1999, Plastics piping systems for water supply — Unplasticized poly(vinyl chloride)
(PVC-U) — Part 1: General
EN 1452-2:1999, Plastics piping systems for water supply — Unplasticized poly(vinyl chloride)
(PVC-U) — Part 2: Pipes
3  Definitions, symbols and abbreviations
For the purposes of this prestandard, the definitions, symbols and abbreviations given in ENV 1046
together with those given in EN 1452-1:1999 apply.
4  Parameters influencing design
4.1  Allowable operating pressure
4.1.1  Where pipe material temperatures do not exceed 25 °C, and where no extra safety
considerations are applicable (see 4.1.2), nominal pressures are given in Table A.1 of
EN 1452-2:1999 using an overall service (design) coefficient, C, of 2,5 for d up to and including
n
90 mm and 2,0 for d greater than 90 mm. These nominal pressures have been calculated on the
n
basis of well-established data taking into account a service life of at least 50 years of continuous
operation. For common water supply systems up to 25 °C the allowable operating pressure PFA in
1)
bars , is equal to the nominal pressure PN.

5 2
) 1 bar = 10 N/m = 0,1 MPa
4.1.2  In order to satisfy special users' requirements, an overall service (design) coefficient, C, other
than 2,5 and 2,0 but not lower than 1,6 may be applied.
4.1.3  Where the water service temperature is between 25 °C and 45 °C, then E
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