SIST EN 14901-2:2020

Ductile iron pipes, fittings and accessories - Requirements and test methods for organic coatings of ductile iron fittings and accessories - Part 2: Thermoplastic acid modified polyolefin coating (TMPO)

This document defines the requirements and test methods for factory applied thermoplastic acid modified polyolefin (TMPO) coatings used for the protection of ductile iron fittings and accessories according to EN 545, EN 598, EN 969, EN 12842 and EN 14525:
-   conveying water (e.g. potable water, raw water, …) at operating temperature up to 50 °C; or
-   conveying waste water at operating temperature up to 45 °C; or
-   conveying gas at operating temperature up to 50 °C;
-   suitable for external environments, i.e. soils, waters and atmospheres of all common corrosion loads, characterized in D.2.3 of EN 545:2010.

Rohre, Formstücke und Zubehör aus duktilem Gusseisen - Anforderungen und Prüfverfahren für organische Beschichtungen von Formstücken und Zubehör aus duktilem Gusseisen - Teil 2: Thermoplastisch säuremodifizierte Polyolefin-Beschichtung

Dieses Dokument legt die Anforderungen und Prüfverfahren fest für werkseitig aufgebrachte Beschichtungen aus thermoplastisch säuremodifiziertem Polyolefin (TMPO-Beschichtungen) für den Korrosionsschutz von Formstücken und Zubehör aus duktilem Gusseisen nach EN 545, EN 598:2007+A1:2009, EN 969, EN 12842 und EN 14525:
—   zum Transport von Wasser (z. B. Trinkwasser, Rohwasser, ...) bei Betriebstemperaturen bis 50 °C; oder
—   zum Transport von Abwasser bei Betriebstemperaturen bis 45 °C; oder
—   zum Transport von Gas bei Betriebstemperaturen bis 50 °C;
—   geeignet für äußere Umgebungsbedingungen, d. h. Böden, Wasser und Atmosphären mit allen üblichen Korrosionsbelastungen nach EN 545:2010, D.2.3.

Tuyaux, raccords et accessoires en fonte ductile - Prescriptions et méthodes d’essai relatives aux revêtements organiques des raccords et accessoires en fonte ductile - Partie 2 : Revêtement thermoplastique en polyoléfine modifiée par un acide (TPMA)

Le présent document établit les prescriptions et les méthodes d’essai relatives aux revêtements thermoplastiques en polyoléfine modifiée par un acide (TPMA) appliqués en usine, utilisés pour la protection des raccords et accessoires en fonte ductile conformes aux normes EN 545, EN 598:2007+A1:2009, EN 969, EN 12842 et EN 14525 :
—   destinés à transporter de l’eau (par exemple eau potable, eau brute, …) à une température de fonctionnement allant jusqu’à 50 °C ; ou
—   destinés à transporter des eaux usées à une température de fonctionnement allant jusqu’à 45 °C ; ou
—   destinés à transporter du gaz à une température de fonctionnement allant jusqu’à 50 °C ;
—   convenant aux environnements extérieurs définis en D.2.3 de l’EN 545:2010, c’est-à-dire la terre, l’eau et les atmosphères corrosives de toute nature.

Cevi, fitingi in pribor iz duktilne železove litine - Zahteve in preskusne metode za zunanje organske prevleke fitingov in pribora iz duktilne železove litine - 2. del: Termoplastična zunanja prevleka iz poliolefina, modificiranega s kislino (TMPO)

Proizvajalcem in uporabnikom cevi iz duktilne železove litine omogoča uporabo termoplastične zunanje prevleke iz poliolefina, modificiranega s kislino (TMPO), in pri tem zagotavljanje skladnosti z ustreznimi zahtevami iz standardov EN 545, EN 545, EN 969. To pomeni inovacijo v skladu z dodatkom I na podlagi uporabe netradicionalnih premaznih sistemov, ki ponujajo okoljske in ekonomske koristi. Obloge iz termoplastične zunanje prevleke iz poliolefina, modificiranega s kislino, izpolnjujejo kriterije iz standarda EN 14901, razen tistih, ki se navezujejo na kemijo vezanega epoksija. Obloge se uporabljajo v drugih delih sveta, npr. v Avstraliji in na Novi Zelandiji, in so bile vključene v nedavno objavo standarda AWWA C116/A21,16-15. Trenutni status oblog iz termoplastične zunanje prevleke iz poliolefina, modificiranega s kislino, v EU pomeni oviro za trgovanje ter ne podpira malih in srednjih podjetij, vključenih v proizvodnjo, oblaganje in nanašanje materiala, ki ponuja koristi za zdravje ljudi, kot je poudarjeno v dodatkih I in II.

General Information

• Status: Published
• Public Enquiry End Date: 03-Dec-2018
• Publication Date: 04-Dec-2019
• ICS: 23.040.10 - Iron and steel pipes
• ICS: 23.040.40 - Metal fittings
• ICS: 25.220.60 - Organic coatings
• Technical Committee: TLP - Pressure vessels
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 16-Oct-2019
• Due Date: 21-Dec-2019
• Completion Date: 05-Dec-2019
• Ref Project: EN 14901-2:2019 - Ductile iron pipes, fittings and accessories - Requirements and test methods for organic coatings of ductile iron fittings and accessories - Part 2: Thermoplastic acid modified polyolefin coating (TMPO)

Overview

EN 14901-2:2019 is a CEN standard that specifies requirements and test methods for factory-applied thermoplastic acid modified polyolefin (TMPO) coatings on ductile iron fittings and accessories. It applies to components used in water, wastewater and gas networks (operating temperatures: water and gas up to 50 °C, wastewater up to 45 °C) and is intended for external environments including common soils, waters and atmospheres. The document covers material, production, inspection and testing to ensure durable corrosion protection.

Key topics and technical requirements

• Scope & applicability: Coatings for ductile iron fittings and accessories referenced to EN 545, EN 598, EN 969, EN 12842 and EN 14525.
• Surface preparation: Manufacturer responsibility to demonstrate suitable blasting and preparation; visual checks per EN ISO 8501-1.
• Appearance: Uniform colour and smoothness; repairs allowed if compatible.
• Adhesion: Measured by pull-off test (EN ISO 4624). Average ≥ 8 MPa, minimum single value ≥ 6 MPa; no interlayer adhesive failure in multilayer systems.
• Coating thickness: Localized minimum > 300 µm, average ≥ 350 µm. Designated zones (joints, bolt holes, edges, ribs) permitted localized minimum 200 µm.
• Non-porosity: High-voltage test at 1 500 V - no electrical puncture permitted (except designated zones).
• Mechanical resistance: Impact and indentation tests - indentation depth must not exceed 30% of initial coating thickness.
• Durability / ageing: Heat ageing in water: adhesion after test ≥ 6 MPa.
• Repairs & compatibility: Repair materials must be compatible and meet thickness and performance requirements.
• Tests & quality control: Distinction between routine tests (production control) and performance tests (after material/process changes). Annexes address quality assurance, coating application and storage/handling.

Applications and who uses this standard

• Manufacturers of ductile iron fittings and accessories specifying TMPO external coatings.
• Coating material suppliers and applicators validating processes and formulations.
• Utilities and infrastructure owners (water, wastewater, gas) specifying corrosion protection performance.
• Procurement/specification engineers preparing purchase orders that reference EN 14901-2:2019.
• Testing laboratories and QA personnel performing adhesion, thickness, porosity and mechanical tests.
• Consulting engineers and designers assessing long-term performance of buried or exposed ductile iron components.

Related standards

• EN 545, EN 598, EN 969, EN 12842, EN 14525 (product/application references)
• EN ISO 4624 (pull-off adhesion test)
• EN ISO 8501-1 (surface cleanliness)
• EN 805 (water systems components)

Keywords: EN 14901-2:2019, TMPO coating, thermoplastic acid modified polyolefin, ductile iron fittings, coating requirements, test methods, coating thickness, adhesion, non-porosity, pipeline corrosion protection.

Standards Content (Sample)

SLOVENSKI STANDARD
01-januar-2020
Cevi, fitingi in pribor iz duktilne železove litine - Zahteve in preskusne metode za
zunanje organske prevleke fitingov in pribora iz duktilne železove litine - 2. del:
Termoplastična zunanja prevleka iz poliolefina, modificiranega s kislino (TMPO)
Ductile iron pipes, fittings and accessories - Requirements and test methods for organic
coatings of ductile iron fittings and accessories - Part 2: Thermoplastic acid modified
polyolefin coating (TMPO)
Rohre, Formstücke und Zubehör aus duktilem Gusseisen - Anforderungen und
Prüfverfahren für organische Beschichtungen von Formstücken und Zubehör aus
duktilem Gusseisen - Teil 2: Thermoplastisch säuremodifizierte Polyolefin-Beschichtung
Tuyaux, raccords et accessoires en fonte ductile - Prescriptions et méthodes d’essai
relatives aux revêtements organiques des raccords et accessoires en fonte ductile -
Partie 2 : Revêtement thermoplastique en polyoléfine modifiée par un acide (TPMA)
Ta slovenski standard je istoveten z: EN 14901-2:2019
ICS:
23.040.10 Železne in jeklene cevi Iron and steel pipes
23.040.40 Kovinski fitingi Metal fittings
25.220.60 Organske prevleke Organic coatings
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN 14901-2
EUROPEAN STANDARD
NORME EUROPÉENNE
November 2019
EUROPÄISCHE NORM
ICS 23.040.10; 23.040.40; 25.220.60
English Version
Ductile iron pipes, fittings and accessories - Requirements
and test methods for organic coatings of ductile iron
fittings and accessories - Part 2: Thermoplastic acid
modified polyolefin coating (TMPO)
Tuyaux, raccords et accessoires en fonte ductile - Rohre, Formstücke und Zubehör aus duktilem
Prescriptions et méthodes d'essai relatives aux Gusseisen - Anforderungen und Prüfverfahren für
revêtements organiques des raccords et accessoires en organische Beschichtungen von Formstücken und
fonte ductile - Partie 2 : Revêtement thermoplastique Zubehör aus duktilem Gusseisen - Teil 2: Beschichtung
en polyoléfine modifiée par un acide (TPMA) aus thermoplastisch säuremodifiziertem Polyolefin
This European Standard was approved by CEN on 16 September 2019.

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 CEN-CENELEC Management Centre 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 CEN-CENELEC Management
Centre has the same status as the official versions.

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
© 2019 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 14901-2:2019 E
worldwide for CEN national Members.

Contents Page
European foreword . 3
Introduction . 3
1 Scope . 5
2 Normative references . 5
3 Terms and definitions . 6
4 Ordering information . 8
5 Technical Requirements . 8
6 Performance requirements . 9
7 Test methods . 10
Annex A (informative) Quality assurance . 13
Annex B (informative) Coating materials and application . 15
Annex C (informative) Handling, transportation and storage . 16
Bibliography . 17

European foreword
This document (EN 14901-2:2019) has been prepared by Technical Committee CEN/TC 203 “Cast iron
pipes, fittings and their joints”, the secretariat of which is held by AFNOR.
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 May 2020, and conflicting national standards shall be
withdrawn at the latest by May 2020.
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.
According to the CEN-CENELEC Internal Regulations, the national standards organisations of the
following countries are bound to implement this European Standard: 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
This document is in conformity with the general requirements already established by CEN/TC 164 in
the field of water supply (e.g. potable water), CEN/TC 165 in the field of wastewater and CEN/TC 234 in
the field of gas distribution.
With respect to potential adverse effects on the quality of water intended for human consumption
caused by the product covered by this document:
a) this document provides no information as to whether the product may be used without restriction
in any of the member states of the EU or EFTA;
b) it should be noted that, while awaiting the adoption of verifiable European criteria, existing
national regulations concerning the use and/or the characteristics of this product remain in force.
1 Scope
This document defines the requirements and test methods for factory applied thermoplastic acid
modified polyolefin (TMPO) coatings used for the protection of ductile iron fittings and accessories
according to EN 545, EN 598:2007+A1:2009, EN 969, EN 12842 and EN 14525:
— conveying water (e.g. potable water, raw water, …) at operating temperature up to 50 °C; or
— conveying waste water at operating temperature up to 45 °C; or
— conveying gas at operating temperature up to 50 °C;
— suitable for external environments, i.e. soils, waters and atmospheres of all common corrosion
loads, characterized in D.2.3 of EN 545:2010.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any amendments) applies.
EN 545:2010, Ductile iron pipes, fittings, accessories and their joints for water pipelines - Requirements
and test methods
EN 598:2007+A1:2009, Coated and lined ductile iron pipes, fittings and their joints for sewerage and
drainage applications - Product characteristics and test and assessment methods
EN 805, Water supply - Requirements for systems and components outside buildings
EN 969, Ductile iron pipes, fittings, accessories and their joints for gas pipelines - Requirements and test
methods
EN 12842, Ductile iron fittings for PVC-U or PE piping systems - Requirements and test methods
EN 14525, Ductile iron wide tolerance couplings and flange adaptors for use with pipes of different
materials: ductile iron, Grey iron, Steel, PVC-U PE, Fibre-cement
EN ISO 4624, Paints and varnishes - Pull-off test for adhesion (ISO 4624)
EN ISO 8501-1, Preparation of steel substrates before application of paints and related products - Visual
assessment of surface cleanliness - Part 1: Rust grades and preparation grades of uncoated steel substrates
and of steel substrates after overall removal of previous coatings (ISO 8501-1)
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
• IEC Electropedia: available at http://www.electropedia.org/
• ISO Online browsing platform: available at https://www.iso.org/obp
3.1
ductile iron
type of cast iron used for pipes, fittings and accessories in which graphite is present primarily in
spheroidal form
3.2
fitting
casting other than a pipe or accessory which allows pipe network deviation, change of direction or bore
Note 1 to entry: Flanged-socket pieces, flanged spigot pieces and collars are also classified as fittings.
3.3
accessory
any casting other than a pipe or fitting which is used in a water pipeline
Note 1 to entry: Examples for accessory are:
— valves;
— inspection chambers;
— manholes;
— glands for mechanical flexible joints;
— glands and locking rings for restrained flexible joints;
— pipe saddles for house connection;
— adjustable flanges.
3.4
component
product defined in 3.2 to 3.3
3.5
adhesion
force per unit area, applied perpendicular to the surface, which is necessary to separate the coating
from its substrate
3.6
impact strength
impact energy which a coating can withstand without damage under specific test conditions
3.7
indentation resistance
resistance of the coating to the penetration of a punch under defined test conditions
3.8
non porosity
absence of electrical puncture in a high voltage test under defined test conditions
3.9
thermoplastic acid modified polyolefin powder material
TMPO powder
polyolefin resin in which a significant amount of carbon hydrogen chemical bonds is replaced by
carboxylic acid functional groups
3.10
thermoplastic acid modified polyolefin coating
TMPO coating
factory applied coating with TMPO powder applied by sintering or flock spraying or dipping in fluidized
bed on preheated parts or by electrostatic spraying and then heating the parts
3.11
performance test
test which is done once and is repeated only after change of coating material supplier, coating material
or relevant change in process application
3.12
routine test
test carried out to control the manufacturing process with a frequency defined by the manufacturer of
the coated ductile iron component
3.13
designated zones
areas of a casting where because of jointing tolerance restrictions, testing difficulties, or shrouding by a
gasket, etc. a lower coating performance is unavoidable
Note 1 to entry: For the purpose of this standard these areas are defined as:
— joint areas;
— bolt holes;
— permitted markings;
— ribs;
— edges.
Note 2 to entry: Where considered necessary, these zones may be protected by appropriate additional
corrosion protection measures during or after installation. However, such measures are not part of this standard.
3.14
average thickness
arithmetic mean of all thickness measurements taken on one coated item
3.15
localized thickness
measured thickness at any one point of one coated item
4 Ordering information
The following information shall be supplied to the manufacturer by the purchaser:
Ductile iron pipes, fittings, accessories and valves according to EN 545, EN 598:2007+A1:2009,
EN 12842 or EN 14525 coated in accordance with this document shall be specified in the purchase
enquiry and order by reference to this document.
EXAMPLE 10 pieces of ductile iron fitting DN 300 according to EN 545 with external coating and internal
lining according to EN 14901-2.
The purchaser shall stipulate the scope of application.
5 Technical Requirements
5.1 General
The coating shall comply with the following technical requirements.
5.2 Surface preparation
Surface preparation shall be designed in order to reach the required performances specified in this
document. It is the responsibility of the manufacturer to demonstrate the fitness for purpose of surface
preparation technology and to put in place a quality control procedure to ensure the stability of those
performances (see 7.1.2).
5.3 Appearance and continuity
The TMPO coating of the final product shall be of:
— uniform colour, except for permitted marking;
— uniform appearance and smoothness, except for admissible repairs;
— free of visible defects (pinholes, bubbles, b
...