SIST-TP CEN/TR 16950:2017

Ductile iron pipes, fittings and accessories - Sanitary characteristics and test methods

This Technical Report contains the sanitary characteristics and test methods applicable to those factory applied lining, coating and jointing materials of ductile iron pipes and fittings conforming to EN 545 which are in contact with water intended for human consumption for use at operating temperatures up to 50 °C. Ductile cast iron itself is not in direct contact with the conveyed water therefore no characteristics in respect to the sanitary behaviour are necessary. As ductile cast iron is impermeable against diffusion of organic substances the water quality is maintained in service. Different surface/volume ratios are used in the tests for pipes, fittings and joints to reflect the different impact of their surface areas exposed to the water in the overall pipeline.

Rohre, Formstücke und Zubehör aus duktilem Gusseisen - Trinkwasserhygienische Eigenschaften und Prüfverfahren

Tuyaux, raccords et accessoires en fonte ductile - Qualités et méthodes d'essais

Cevi, fitingi in pribor iz duktilne železove litine - Sanitarne karakteristike in preskusne metode

Tehnično poročilo vsebuje sanitarne karakteristike in preskusne metode, ki se uporabljajo za tiste tovarniške obložne, premazne in spojne materiale cevi in fitingov iz duktilne železove litine, ki so skladni s standardom EN 545, so v stiku s pitno vodo in se uporabljajo pri delovnih temperaturah do 50° C. Duktilna železova litina ni v neposrednem stiku z dobavljeno vodo, zato karakteristike v zvezi s sanitarnim obnašanjem niso potrebne. Ker duktilna železova litina ne prepušča organskih snovi, se kakovost vode ohranja. Pri preskusih cevi, fitingov in spojev se uporabljajo različna razmerja med površino in prostornino, da se prikaže različne vplive na njihove površine prek celotnega cevovoda, ko so izpostavljeni vodi.

General Information

• Status: Published
• Public Enquiry End Date: 10-Jan-2016
• Publication Date: 12-Apr-2017
• ICS: 77.140.75 - Steel pipes and tubes for specific use
• Technical Committee: TLP - Pressure vessels
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 02-Feb-2017
• Due Date: 09-Apr-2017
• Completion Date: 13-Apr-2017
• Ref Project: CEN/TR 16950:2016 - Ductile iron pipes, fittings and accessories - Sanitary characteristics and test methods

Standards Content (Sample)

SLOVENSKI STANDARD
SIST-TP CEN/TR 16950:2017
01-maj-2017
Cevi, fitingi in pribor iz duktilne železove litine - Sanitarne karakteristike in
preskusne metode
Ductile iron pipes, fittings and accessories - Sanitary characteristics and test methods
Rohre, Formstücke und Zubehör aus duktilem Gusseisen - Trinkwasserhygienische
Eigenschaften und Prüfverfahren
Tuyaux, raccords et accessoires en fonte ductile - Qualités et méthodes d'essais
Ta slovenski standard je istoveten z: CEN/TR 16950:2016
ICS:
77.140.75 Jeklene cevi in cevni profili Steel pipes and tubes for
za posebne namene specific use
SIST-TP CEN/TR 16950:2017 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST-TP CEN/TR 16950:2017

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SIST-TP CEN/TR 16950:2017


CEN/TR 16950
TECHNICAL REPORT

RAPPORT TECHNIQUE

July 2016
TECHNISCHER BERICHT
ICS 23.040.10; 23.040.40
English Version

Ductile iron pipes, fittings and accessories - Sanitary
characteristics and test methods
Tuyaux, raccords et accessoires en fonte ductile - Rohre, Formstücke und Zubehör aus duktilem
Aspects sanitaires et methodes d'essais Gusseisen - Trinkwasserhygienische Eigenschaften und
Prüfverfahren


This Technical Report was approved by CEN on 29 February 2016. It has been drawn up by the Technical Committee CEN/TC
203.

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

CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2016 CEN All rights of exploitation in any form and by any means reserved Ref. No. CEN/TR 16950:2016 E
worldwide for CEN national Members.

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Contents Page
European foreword . 4
Introduction . 5
1 Scope . 6
2 Normative references . 6
3 Terms and definitions . 6
4 Test samples . 8
5 Characteristics . 8
5.1 Cement mortar linings of pipes . 8
5.1.1 General . 8
5.1.2 Organoleptic parameters (flavour and odour, colour and turbidity) . 8
5.1.3 Migration . 8
5.2 Porous seal coat on cement mortar linings of pipes. 9
5.3 Cement mortar linings of fittings . 9
5.4 Organic linings (except bitumen) . 10
5.4.1 Organoleptic parameters . 10
5.4.2 Migration . 10
5.4.3 Enhancement of microbial growth (EMG) . 10
5.5 Bituminous linings for fittings and joint areas . 10
5.5.1 Organoleptic parameters . 10
5.5.2 Migration . 10
5.5.3 Enhancement of microbial growth (EMG) . 11
5.6 Enamel coatings and linings . 11
5.6.1 Organoleptic parameters . 11
5.6.2 Migration . 11
5.6.3 Enhancement of microbial growth (EMG) . 11
5.7 Rubber gaskets . 11
5.7.1 Organoleptic parameters . 11
5.7.2 Migration . 12
5.7.3 Chlorine consumption . 12
Annex A (informative) National regulations on sanitary requirements, limit values, positive
lists . 13
A.1 General . 13
A.2 Austria . 13
A.3 Belgium . 13
A.4 France . 13
A.5 Germany . 13
A.6 Italy. 14
A.7 Netherlands . 14
A.8 Romania . 14
A.9 Spain . 14
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A.10 Switzerland . 14
A.11 United Kingdom . 14
Bibliography . 16

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SIST-TP CEN/TR 16950:2017
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European foreword
This document (CEN/TR 16950:2016) has been prepared by Technical Committee CEN/TC 203 “Cast
iron pipes, fittings and their joints”, the secretariat of which is held by AFNOR.
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.
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SIST-TP CEN/TR 16950:2017
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Introduction
This Technical Report is in conformity with the general requirements already established by
CEN/TC 164 in the field of water supply (e.g. potable water).
This Technical Report contains the essential sanitary characteristics to be verified in performance tests
by materials of pipes, fittings, accessories of ductile cast iron and their joints within the scope of this
Technical Report, which are in contact with water intended for human consumption. In addition, the
national regulations of member states apply, including positive lists of substances for organic and
inorganic materials.
Tests carried out using EN test methods to demonstrate compliance with existing national regulations
may be used to show that the sanitary characteristics of pipes, fittings, accessories of ductile cast iron
and their joints are verified, e.g. compliance with the sanitary requirements applicable either in F, G, NL
or UK ensures compliance with the properties of this Technical Report. Since the sanitary requirements
of construction products remain in the framework of the national regulations, Annex A of this Technical
Report contains a compilation of the different national requirements.
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SIST-TP CEN/TR 16950:2017
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1 Scope
This Technical Report contains the sanitary characteristics and test methods applicable to those factory
applied lining-, coating- and jointing materials of ductile iron pipes and fittings conforming to EN 545
that are in contact with water intended for human consumption for use at operating temperatures up to
50 °C. Ductile cast iron itself is not in direct contact with the conveyed water and therefore no
characteristics in respect to the sanitary behaviour are necessary. As ductile cast iron is impermeable
against diffusion of organic substances, the water quality is maintained in service. Different
surface/volume ratios are used in the tests for pipes, fittings and joints to reflect the different impact of
their surface areas exposed to the water in the overall pipeline.
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 1420, Influence of organic materials on water intended for human consumption — Determination of
odour and flavour assessment of water in piping systems
EN 1622, Water quality — Determination of the threshold odour number (TON) and threshold flavour
number (TFN)
EN 12873-1, Influence of materials on water intended for human consumption — Influence due to
migration — Part 1: Test method for factory-made products made from or incorporating organic or glassy
(porcelain/vitreous enamel) materials
EN 14718, Influence of organic materials on water intended for human consumption — Determination of
the chlorine demand — Test method
EN 14944-1, Influence of cementitious products on water intended for human consumption — Test
methods — Part 1: Influence of factory made cementitious products on organoleptic parameters
EN 14944-3, Influence of cementitious products on water intended for human consumption — Test
methods — Part 3: Migration of substances from factory-made cementititous products
EN 16421, Influence of materials on water for human consumption — Enhancement of microbial growth
(EMG)
EN ISO 7027-1, Water quality — Determination of turbidity — Part 1: Quantitative methods (ISO 7027-1)
EN ISO 7393-1, Water quality — Determination of free chlorine and total chlorine — Part 1: Titrimetric
method using N, N-diethyl-1,4-phenylenediamine (ISO 7393-1)
EN ISO 7887, Water quality — Examination and determination of colour (ISO 7887)
EN ISO 14402, Water quality — Determination of phenol index by flow analysis (FIA and CFA) (ISO 14402)
EN ISO 17993, Water quality — Determination of 15 polycyclic aromatic hydrocarbons (PAH) in water by
HPLC with fluorescence detection after liquid-liquid extraction (ISO 17993)
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
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3.1
ductile iron
cast iron used for pipes, fittings and accessories in which graphite is present substantially in spheroidal
form
Note 1 to entry: Ductile iron is impermeable to diffusion (e.g. contaminated soils).
3.2
cement mortar lining
internal coating system for ductile iron pipes and fittings, principally consisting of a blend of cement,
sand and water app
...