oSIST prEN 16056:2022

Influence of metallic materials on water intended for human consumption - Method to evaluate the passive behaviour of stainless steels and other passive alloys

This document specifies a procedure to evaluate the passive behaviour of stainless steels and other passive alloys used in construction products intended to come into contact with drinking water.
The passive state is the reason why no relevant amounts of metals are released from such materials into the drinking water. This test is used to verify whether the alloy under consideration is passive under conditions which can occur in drinking waters.
This document is not applicable for product testing. It is only applicable for the assessment of passive behaviour of materials.

Einfluss metallischer Werkstoffe auf Wasser für den menschlichen Gebrauch - Verfahren zur Ermittlung des Passivverhaltens von nichtrostenden Stählen

Passivverhaltens von nichtrostenden Stählen und andere passiven Legierungen fest, die in Bauprodukten eingesetzt werden, die dafür vorgesehen sind, mit Trinkwasser in Kontakt zu kommen.
Der Passivzustand ist der Grund, weshalb keine relevanten Mengen an Metallen aus solchen Werkstoffen in das Trinkwasser abgegeben werden. Diese Prüfung wird angewendet. um zu verifizieren, ob die betreffenden Legierungen unter den Bedingungen, die in Trinkwässern vorliegen können, passiv bleiben.
Dieses Dokument kann nicht für Produkttests angewendet werden. Es ist nur anwendbar für die Bewertung von passiven Materialien.

Influence des matériaux métalliques sur l'eau destinée à la consommation humaine - Méthode d'évaluation du comportement passif des aciers inoxydables et autres alliages passifs

Le présent document spécifie un mode opératoire pour évaluer le comportement passif des aciers inoxydables et autres alliages passifs employés dans des produits de construction destinés à entrer en contact avec de l'eau potable.
C'est en raison de leur passivité que ces matériaux ne relarguent pas de quantités significatives de métaux dans l'eau potable. Cet essai sert à évaluer la passivité de l'alliage à l'étude dans des conditions semblables à celles rencontrées dans l'eau potable.
Le présent document n’est toutefois pas applicable aux essais de produits. Il est uniquement applicable pour l’évaluation du comportement passif des matériaux.

Vpliv kovinskih materialov na pripravo pitne vode - Metoda za ovrednotenje pasivnega vedenja nerjavnih jekel in drugih pasivnih zlitin

General Information

• Status: Not Published
• Public Enquiry End Date: 29-Apr-2022
• ICS: 13.060.20 - Drinking water
• ICS: 67.250 - Materials and articles in contact with foodstuffs
• Technical Committee: IOVO - Water supply and waste water engineering
• Current Stage: 4020 - Public enquire (PE) (Adopted Project)
• Start Date: 23-Feb-2022
• Due Date: 13-Jul-2022
• Ref Project: prEN 16056 - Influence of metallic materials on water intended for human consumption - Method to evaluate the passive behaviour of stainless steels and other passive alloys

RELATIONS

• Revised: SIST EN 16056:2012 - Influence of metallic materials on water intended for human consumption - Method to evaluate the passive behaviour of stainless steels
• Effective Date: 02-Oct-2019

Standards Content (sample)

SLOVENSKI STANDARD
oSIST prEN 16056:2022
01-april-2022
Vpliv kovinskih materialov na pripravo pitne vode - Metoda za ovrednotenje
pasivnega vedenja nerjavnih jekel in drugih pasivnih zlitin

Influence of metallic materials on water intended for human consumption - Method to

evaluate the passive behaviour of stainless steels and other passive alloys

Einfluss metallischer Werkstoffe auf Wasser für den menschlichen Gebrauch - Verfahren

zur Ermittlung des Passivverhaltens von nichtrostenden Stählen

Influence des matériaux métalliques sur l'eau destinée à la consommation humaine -

Méthode d'évaluation du comportement passif des aciers inoxydables et autres alliages

passifs
Ta slovenski standard je istoveten z: prEN 16056
ICS:
13.060.20 Pitna voda Drinking water
67.250 Materiali in predmeti v stiku z Materials and articles in
živili contact with foodstuffs
oSIST prEN 16056:2022 en,fr,de

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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oSIST prEN 16056:2022
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oSIST prEN 16056:2022
DRAFT
EUROPEAN STANDARD
prEN 16056
NORME EUROPÉENNE
EUROPÄISCHE NORM
February 2022
ICS 67.250 Will supersede EN 16056:2012
English Version
Influence of metallic materials on water intended for
human consumption - Method to evaluate the passive
behaviour of stainless steels and other passive alloys

Influence des matériaux métalliques sur l'eau destinée Einfluss metallischer Werkstoffe auf Wasser für den

à la consommation humaine - Méthode d'évaluation du menschlichen Gebrauch - Verfahren zur Ermittlung des

comportement passif des aciers inoxydables et autres Passivverhaltens von nichtrostenden Stählen

alliages passifs

This draft European Standard is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee

CEN/TC 164.

If this draft becomes a European Standard, 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.

This draft European Standard was established by CEN 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.

Recipients of this draft are invited to submit, with their comments, notification of any relevant patent rights of which they are

aware and to provide supporting documentation.

Warning : This document is not a European Standard. It is distributed for review and comments. It is subject to change without

notice and shall not be referred to as a European Standard.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels

© 2022 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 16056:2022 E

worldwide for CEN national Members.
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oSIST prEN 16056:2022
prEN 16056:2022 (E)
Contents Page

European foreword ...................................................................................................................................................... 3

Introduction .................................................................................................................................................................... 4

1 Scope .................................................................................................................................................................... 5

2 Normative references .................................................................................................................................... 5

3 Terms and definitions ................................................................................................................................... 5

4 Test cell ............................................................................................................................................................... 5

5 Test water .......................................................................................................................................................... 6

6 Sample preparation ....................................................................................................................................... 6

7 Test procedure ................................................................................................................................................. 6

8 Evaluation of test results .............................................................................................................................. 7

9 Report ................................................................................................................................................................. 7

Annex A (informative) Test cell and presentation of test results ................................................................. 9

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oSIST prEN 16056:2022
prEN 16056:2022 (E)
European foreword

This document (prEN 16056:2022) has been prepared by Technical Committee CEN/TC 164 “Water

Supply”, the secretariat of which is held by AFNOR.
This document is currently submitted to the CEN Enquiry.
This document will supersede EN 16056:2012.

In comparison with the previous edition, the following technical modifications have been made:

— Scope extension with alloys with a passive behaviour comparable to stainless steel;

— other sample geometries than sheets have been added.

This document is one of a series of test methods which support associated product standards.

This document has been prepared under the mandate given to CEN by the Commission of the European

Communities and the European Free Trade Area.

With respect to the potential adverse effects on the quality of water intended for human consumption

caused by metallic materials, attention is drawn to the fact that the relevant national regulations remain

in force until the adoption of verifiable European acceptance criteria. Water intended for human

consumption is hereafter referred to as “drinking water” and means the same as the definition given at

Article 2(1) of the Council Directive 98/83/EC on the quality of water intended for human consumption.

This document describes the method to evaluate the passive behaviour of stainless steels and other

alloys in contact with water. The passive layer is the cause for the negligible release of metal ions from

stainless steels into the drinking water.
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oSIST prEN 16056:2022
prEN 16056:2022 (E)
Introduction

The test methods in this series are designed to provide information on metal release over time from

metallic materials into drinking water.

When tested in a test rig as described in EN 15664-1 stainless steels show very low metal release rates

and the resulting metal concentrations in the water are in most cases below the detection limits of

available analytical instruments. The reason for these small metal release rates is the formation of a

passive layer on the surface on stainless steels.

It was therefore decided to test stainless steels for the properties of the passive layer and not metal

release. The material under consideration is tested in an electrochemical test. For verification of the

correct performance of the test protocol, the test is also performed in parallel on material 1.4404 which

is passive in contact with drinking water but shows a clear pitting potential under the conditions of this

test.

The test method is also applicable to alloys having a passive behaviour comparable to that of stainless

steels.

This test is terminated when the pitting potential of the material or the break-through potential is

reached.
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oSIST prEN 16056:2022
prEN 16056:2022 (E)
1 Scope

This document specifies a procedure to evaluate the passive behaviour of stainless steels and other

passive alloys used in construction products intended to come into contact with drinking water.

The passive state is the reason why no relevant amounts of metals are released from such materials into

the drinking water. This test is used to verify whether the alloy under consideration is passive under

conditions which can occur in drinking waters.

This document is not applicable for product testing. It is only applicable for the assessment of passive

behaviour of materials.
2 Normative references

The following documents are referred to in the text in such a way that some or all of their con

...