CEN/TS 1555-7:2021

Plastics piping systems for the supply of gaseous fuels - Polyethylene (PE) - Part 7: Guidance for the assessment of conformity

This document 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.
This document gives recommendations that the quality management system conforms to or is no less stringent than the relevant requirements to EN ISO 9001.
NOTE 1 If certification is involved, the certification and inspection body is preferably compliant with EN ISO/IEC 17065, EN IS0/IEC 17021 or EN ISO/IEC 17020, as applicable.
In conjunction with Parts 1 to 5 of EN 1555 (see Foreword), this document 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:
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.

Kunststoff-Rohrleitungssysteme für die Gasversorgung - Polyethylen (PE) - Teil 7: Empfehlungen für die Beurteilung der Konformität

Dieses Dokument enthält Leitlinien für die Bewertung der Konformität von Formmassen, Erzeugnissen, Verbindungen und Bauteilkombinationen in Übereinstimmung mit dem (den) zutreffenden Teil(en) von EN 1555, der (die) dazu vorgesehen ist (sind), als Bestandteil des Qualitätssicherungssystems und zur Einführung von Zertifizierungsverfahren in den Qualitätsplan des Herstellers einbezogen zu werden.
Dieses Dokument gibt Empfehlungen dazu, dass das Qualitätssicherungssystem entweder die einschlägigen Anforderungen von EN ISO 9001 [1] oder mindestens gleich strenge Anforderungen erfüllen sollte.
ANMERKUNG 1 Falls eine Zertifizierung durchgeführt wird, sollte(n) die Zertifizierungs- und Überwachungsstelle(n) vorzugsweise der zutreffenden Norm EN ISO/IEC 17065 [2], EN ISO/IEC 17021 [3] oder EN ISO/IEC 17020 [4] entsprechen.
Zusammen mit den Teilen 1 bis 5 der EN 1555 (siehe Vorwort) gilt dieses Dokument für Kunststoff-Rohrleitungssysteme aus Polyethylen (PE) für die Gasversorgung. Es gilt für Rohre, Formstücke und Armaturen aus PE, deren Verbindungen untereinander sowie für Verbindungen mit Rohrleitungsteilen aus anderen Werkstoffen, die für den Einsatz unter den folgenden Bedingungen vorgesehen sind:
a) der maximal zulässige Betriebsdruck (MOP, en: maximum operating pressure) beträgt nicht mehr als 10 bar ;
b) es gilt eine Betriebstemperatur von 20 °C als Bezugstemperatur.
ANMERKUNG 2 Für andere Betriebstemperaturen können Minderungsfaktoren verwendet werden, siehe EN 1555-5.
Für Formstücke für mechanische Verbindungen, die ISO 17885 entsprechen, sind in diesem Teil von EN 1555 keine Empfehlungen für die Konformitätsbewertung enthalten. Wird eine solche Bewertung gefordert, sollte im Einvernehmen zwischen Anwender und Hersteller ein Qualitätssicherungsplan erstellt werden, der auf den genannten Prüfungen basiert.
EN 1555 deckt einen Bereich maximal zulässiger Betriebsdrücke ab und legt Anforderungen an die Einfärbung von Rohrleitungsteilen fest.
ANMERKUNG 3 Der Käufer bzw. Auftraggeber ist unter Berücksichtigung der eigenen Anforderungen sowie der geltenden nationalen Festlegungen und Verlegepraktiken oder  vorschriften für die entsprechende Auswahl dieser Kriterien verantwortlich.

Systèmes de canalisations en plastique pour la distribution de combustibles gazeux — Polyéthylène (PE) — Teil 7: Guide pour l'évaluation de la conformité

Cevni sistemi iz polimernih materialov za oskrbo s plinastimi gorivi - Polietilen (PE) - 7. del: Smernice za ugotavljanje skladnosti

Ta tehnična specifikacija vsebuje navodila za ugotavljanje skladnosti materialov, proizvodov, spojev in sestavov z ustreznimi deli standarda FprEN 1555, ki naj bi se vključila v poslovnik kakovosti proizvajalca kot del sistema vodenja kakovosti, vsebuje pa tudi navodila za vzpostavitev postopka certificiranja.
Priporoča se, da je sistem vodenja kakovosti skladen s standardom EN ISO 9001 [2] oziroma da ni manj strog od ustreznih zahtev iz tega standarda.
OPOMBA 1:   Pri certificiranju se priporoča, da je certifikacijski in inšpekcijski organ akreditiran v skladu s standardom EN 45011 [3], EN 45012 [4] ali EN ISO/IEC 17020 [5].
V povezavi z deli od 1 do 5 standarda EN 1555 (glej Predgovor) se ta tehnična specifikacija uporablja za polietilenske (PE) cevne sisteme iz polimernih materialov za oskrbo s plinastimi gorivi. Uporablja se za polietilenske cevi, fitinge in ventile ter njihove spoje in spoje s komponentami iz drugih materialov, namenjene uporabi v naslednjih pogojih:
a)   najvišji obratovalni tlak MOP do vključno 10 barov;
b)   obratovalna temperatura 20 °C kot referenčna temperatura.
OPOMBA 2:   Za druge obratovalne temperature je mogoče uporabiti redukcijske koeficiente; glej standard EN 1555-5.
Ta del standarda EN 1555 ne podaja navodil za ugotavljanje skladnosti za mehanične fitinge, ki izpolnjujejo zahteve standarda ISO 17885. Uporabnik in proizvajalec naj bi na zahtevo sporazumno uvedla poslovnik kakovosti na podlagi omenjenih preskusov.
Standard EN 1555 zajema razpon najvišjih obratovalnih tlakov in določa zahteve glede barv in aditivov.
OPOMBA 3:   Za ustrezno izbiro teh vidikov je odgovoren kupec ali projektant, pri čemer mora upoštevati posebne zahteve ter vse ustrezne nacionalne predpise in prakse ali kodekse vgradnje.

General Information

• Status: Published
• Publication Date: 21-Dec-2021
• ICS: 23.040.01 - Pipeline components and pipelines in general
• ICS: 91.140.40 - Gas supply systems
• Technical Committee: CEN/TC 155 - Plastics piping systems and ducting systems
• Drafting Committee: CEN/TC 155/WG 12 - Systems for water supply and pressure drainage and sewerage - PE, PP (solid wall)
• Current Stage: 9020 - Submission to 2 Year Review Enquiry - Review Enquiry
• Start Date: 15-Jan-2025
• Completion Date: 15-Jan-2025
• Ref Project: SIST-TS CEN/TS 1555-7:2022 - Plastics piping systems for the supply of gaseous fuels - Polyethylene (PE) - Part 7: Guidance for the assessment of conformity

Relations

• Replaces: CEN/TS 1555-7:2013 - Plastics piping systems for the supply of gaseous fuels - Polyethylene (PE) - Part 7: Guidance for the assessment of conformity
• Effective Date: 01-Mar-2017

Standards Content (Sample)

SLOVENSKI STANDARD
01-februar-2022
Nadomešča:
SIST-TS CEN/TS 1555-7:2013
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) - Teil 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 1555-7:2021
ICS:
83.140.30 Polimerne cevi in fitingi za Plastics pipes and fittings for
snovi, ki niso tekočine non fluid use
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.

CEN/TS 1555-7
TECHNICAL SPECIFICATION
SPÉCIFICATION TECHNIQUE
December 2021
TECHNISCHE SPEZIFIKATION
ICS 23.040.01; 91.140.40 Supersedes CEN/TS 1555-7:2013
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 Kunststoff-Rohrleitungssysteme für die Gasversorgung
distribution de combustibles gazeux - Polyéthylène - Polyethylen (PE) - Teil 7: Empfehlungen für die
(PE) - Teil 7: Guide pour l'évaluation de la conformité Beurteilung der Konformität
This Technical Specification (CEN/TS) was approved by CEN on 17 October 2021 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, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and
United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2021 CEN All rights of exploitation in any form and by any means reserved Ref. No. CEN/TS 1555-7:2021 E
worldwide for CEN national Members.

Contents Page
European foreword . 3
Introduction . 4
1 Scope . 6
2 Normative references . 6
3 Terms and definitions . 7
4 Abbreviated terms .10
5 General .11
6 Testing and inspection .11
6.1 Grouping .11
6.1.1 General .11
6.1.2 Size groups .11
6.1.3 Fitting groups .11
6.1.4 Fitting types .11
6.2 Type testing .12
6.3 Batch release tests .22
6.4 Process verification tests .26
6.5 Audit tests .30
6.6 Indirect tests .35
6.7 One-off products and products produced in very low quantity .36
6.8 Large diameter products .36
6.9 Documentation .36
6.9.1 6.9.1Type test results .36
6.9.2 Test records .36
6.9.3 Technical file for certification purposes .36
Annex A (normative) Change of compound .37
A.1 General .37
A.2 Change .37
A.2.1 Change of base polymer .37
A.2.2 Change of grade .37
A.2.3 Change of pigment .37
A.2.4 Change of additives other than pigments .37
A.3 Type testing required for re-evaluation .37
A.3.1 Changes A.2.1 and A.2.3.1 .37
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 .38
Annex B (informative) Basic test matrix for PE compounds and piping products .39
Bibliography .43

European foreword
This document (CEN/TS 1555-7:2021) 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 shall not be held responsible for identifying any or all such patent rights.
This document supersedes CEN/TS 1555-7:2013.
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/DTS 1555-7 takes into account the technical changes made in the revision of
EN 1555-1, -2, -3, -4 and -5, published in 2021. 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.
The revision of this System Standard has been carried out to add the PE 100-RC type materials with
enhanced resistance to slow crack growth. The size range has been increased to 800 mm diameter, test
methods have been updated, and new test methods have been added for PE 100-RC materials.
Any feedback and questions on this document should be directed to the users’ national standards body.
A complete listing of these bodies can be found on the CEN website.
According to the CEN/CENELEC Internal Regulations, the national standards organisations of the
following countries are bound to announce this Technical Specification: Austria, Belgium, Bulgaria,
Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland,
Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Republic of
North Macedonia, Romania, Serbia, 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 organization
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 document 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.
This document gives recommendations that the quality management system conforms to or is no less
stringent than the relevant requirements to EN ISO 9001 [1].
NOTE 1 If certification is involved, the certification and inspection body is preferably compliant with EN
ISO/IEC 17065 [2], EN IS0/IEC 17021 [3] or EN ISO/IEC 17020 [4], as applicable.
In conjunction with Parts 1 to 5 of EN 1555 (see Foreword), this document 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:
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 17885, guidance for assessment of conformity is not given in
this part of EN 1555. When requested, a quality plan based on the tests mentioned should be set up in
agreement between user and manufacturer.
EN 1555 covers a range of maximum operating pressures and gives requirements concerning colours.
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 1555-1:2021, Plastics piping syst
...