BS EN 579

BRITISH STANDARD BS EN
579:1994
BS 2782-11:
Method 1106E:
1994
Plastics piping
systems — Crosslinked
polyethylene (PE-X)
pipes —
Determination of
degree of crosslinking
by solvent extraction
The European Standard EN 579:1993 has the status of a
British Standard
UDC 621.643.2-036.742.2:620.1:543.832BS EN 579:1994
This British Standard, having
been prepared under the
direction of the Plastics and
Rubber Standards Policy
Committee, was published
under the authority of the
Standards Board and
comes into effect on
15 July 1994
© BSI 12-1999
The following BSI references
relate to the work on this
standard:
Committee reference PRM/61
Draft for comment 91/48474 DC
ISBN 0 580 22265 9
Cooperating organizations
The European Committee for Standardization (CEN), under whose
supervision this European Standard was prepared, comprises the national
standards organizations of the following countries:
Austria Oesterreichisches Normungsinstitut
Belgium Institut belge de normalisation
Denmark Dansk Standardiseringsraad
Finland Suomen Standardisoimisliito, r.y.
France Association française de normalisation
Germany Deutsches Institut für Normung e.V.
Greece Hellenic Organization for Standardization
Iceland Technological Institute of Iceland
Ireland National Standards Authority of Ireland
Italy Ente Nazionale Italiano di Unificazione
Luxembourg Inspection du Travail et des Mines
Netherlands Nederlands Normalisatie-instituut
Norway Norges Standardiseringsforbund
Portugal Instituto Portuguès da Qualidade
Spain Asociación Española de Normalización y Certificación
Sweden Standardiseringskommissionen i Sverige
Switzerland Association suisse de normalisation
United Kingdom British Standards Institution
Amendments issued since publication
Amd. No. Date CommentsBS EN 579:1994
© BSI 12-1999 i
Contents
Page
Cooperating organizations Inside front cover
National foreword ii
Foreword 2
1 Scope 3
2 Principle 3
3 Material 3
4 Apparatus 3
5 Test pieces 3
6 Procedure 3
7 Calculation and expression of results 4
8 Test report 4
National annex NA (informative) Committees responsible Inside back coverBS EN 579:1994
ii
© BSI 12-1999
National foreword
This British Standard has been prepared under the direction of the Plastics and
Rubber Standards Policy Committee and is the English language version of
EN 579:1993 Plastics piping systems — Crosslinked polyethylene (PE-X) pipes —
Determination of degree of crosslinking by solvent extraction, published by the
European Committee for Standardization (CEN).
It is incorporated into BS 2782 Methods of testing plastics —
Part 11: Thermoplastics pipes, fittings and valves, as Method 1106E:1994.
A British Standard does not purport to include all the necessary provisions of a
contract. Users of British Standards are responsible for their correct application.
Compliance with a British Standard does not of itself confer immunity
from legal obligations.
Summary of pages
This document comprises a front cover, an inside front cover, pages i and ii,
the EN title page, pages 2 to 4, an inside back cover and a back cover.
This standard has been updated (see copyright date) and may have had
amendments incorporated. This will be indicated in the amendment table on the
inside front cover.EUROPEAN STANDARD
NORME EUROPÉENNE
EUROPÄISCHE NORM
EN 579
July 1993
UDC 621.643.2-036.742.2:620.1:543.832
Descriptors: Plastics, pipes, polyethylene, crosslinked, tests, determination, extraction, solvent
English version
Plastics piping systems — Crosslinked polyethylene (PE-X)
pipes — Determination of degree of crosslinking by solvent
extraction
Systèmes de canalisations en plastiques —
Tubes et polyéthylène réticulé (PE-X)
Détermination du taux de gel par extraction
solvant
Kunststoff-Rohrleitungssysteme — Rohre aus
vernetztem Polyethylen (PE-X) — Bestimmung
des Vernetzungsgrades durch
Lösemittelextraktion
This European Standard was approved by CEN on 1993-06-25. CEN members
are bound to comply with the CEN/CENELEC Internal Regulations which
stipulate the conditions for giving this European Standard the status of a
national standard without any alteration.
Up-to-date lists and bibliographical references concerning such national
standards may be obtained on application to the Central Secretariat or to any
CEN member.
This European Standard exists in three official versions (English, French,
German). A version in any other language made by translation under the
responsibility of a CEN member into its own language and notified to the
Central Secretariat has the same status as the official versions.
CEN members are the national standards bodies of Austria, Belgium,
Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy,
Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and
United Kingdom. BS EN 579:1994
CEN
European Committee for Standardization
Comité Européen de Normalisation
Europäisches Komitee für Normung
Central Secretariat: rue de Stassart 36, B-1050 Brussels
© 1993 Copyright reserved to CEN members
Ref. No. EN 579:1993 EEN 579:1993
© BSI 12-1999 2
Foreword
This standard was prepared by CEN/TC 155
“Plastics piping systems and ducting systems”.
This standard is based on a proposal for a draft
International Standard ISO/DP 10147 “Crosslinked
polyethylene (PE-X) pipes — Degree of crosslinking
as determined by solvent extraction” prepared by
the International Organization for Standardization
(ISO). It is a modification of ISO/DP 10147 for
reasons of applicability to a variety of such
materials and for alignment with texts of other
standards on test methods.
This European Standard shall be given the status of
a national standard, either by publication of an
identical text or by endorsement, at the latest by
January 1994, and conflicting national standards
shall be withdrawn at the latest by January 1994.
The modifications are:
— no process-dependent product requirements
are given;
— editorial changes have been introduced.
The material-dependent test parameters and/or
performance requirements are incorporated in the
referring standard(s).
No existing European Standard is superseded by
this standard.
The standard was approved and in accordance with
the CEN/CENELEC Internal Regulations, the
following countries are bound to implement this
European Standard: Austria, Belgium, Denmark,
Finland, France, Germany, Greece, Iceland,
Ireland, Italy, Luxembourg, Netherlands, Norway,
Portugal, Spain, Sweden, Switzerland,
United Kingdom.EN 579:1993
© BSI 12-1999 3
1 Scope
This standard specifies a method for the
determination by solvent extraction, of the degree of
crosslinking of crosslinked polyethylene (PE-X)
pipe.
It is applicable to pipes of PE-X not containing filler.
2 Principle
A test piece is immersed in a specific boiling solvent
for a specific period of time and the proportion by
mass of insoluble material is measured.
The percentage of insoluble material is used to
express the degree of crosslinking.
NOTE It is assumed that the following test parameter is set by
the standard making reference to this standard:
— if necessary, the number of test pieces (see 5.2).
3 Material
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