EN 15664-1:2008

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Influence of metallic materials on water intended for human consumption - Dynamic rig test for assessment of metal release - Part 1: Design and operationInfluence des matériaux métalliques sur l'eau destinée à la consommation humaine - Banc d'essai dynamique pour l'évaluation de l'émission de métaux - Partie 1: Conception et fonctionnementEinfluss metallischer Werkstoffe auf Wasser für den menschlichen Gebrauch - Dynamischer Prüfstandversuch für die Beurteilung der Freisetzung von Metallen - Teil 1: Auslegung und BetriebTa slovenski standard je istoveten z:EN 15664-1:2008SIST EN 15664-1:2008en,fr,de67.25013.060.20ICS:SLOVENSKI
STANDARDSIST EN 15664-1:200801-april-2008

EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 15664-1January 2008ICS 13.060.20; 67.250 English VersionInfluence of metallic materials on water intended for humanconsumption - Dynamic rig test for assessment of metal release- Part 1: Design and operationInfluence des matériaux métalliques sur l'eau destinée à laconsommation humaine - Banc d'essai dynamique pourl'évaluation de l'émission de métaux - Partie 1: Conceptionet fonctionnementEinfluss metallischer Werkstoffe auf Wasser für denmenschlichen Gebrauch - Dynamischer Prüfstandversuchfür die Beurteilung der Freisetzung von Metallen - Teil 1:Auslegung und BetriebThis European Standard was approved by CEN on 28 October 2007.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such nationalstandards may be obtained on application to the CEN 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 translationunder the responsibility of a CEN member into its own language and notified to the CEN Management Centre has the same status as theofficial versions.CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland,France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal,Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMITÉ EUROPÉEN DE NORMALISATIONEUROPÄISCHES KOMITEE FÜR NORMUNGManagement Centre: rue de Stassart, 36
B-1050 Brussels© 2008 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 15664-1:2008: E

— Part 2: Test waters — Part 3: Guidance on interpretation of results. Part 1 describes a test method to produce contact waters for the assessment of metal release from metallic materials. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom.

The test is based on a programme of alternating periods of once-through flow and stagnation in a rig, simulating the conditions in a domestic distribution system.
The test conditions are more relevant than conditions of continuous through-flow or sit and soak tests and are applicable to all metallic materials in distribution systems. Internal corrosion of metallic products in water conveying systems generally leads to the build-up of layers, which might or might not be protective. The factors influencing corrosion are described in EN 12502-1. Type and rate of the production of corrosion products and the rate of metal release can depend on: • characteristics of the metallic material;
• characteristics of the water;
• design and construction;
• pressure testing and commissioning;
• operating conditions and duration of operation. Corrosion product layers begin to form as soon as a metallic material comes into contact with water. Their properties depend on the factors noted above and for a given water/material combination especially on the operating conditions. It is not possible to reproduce the conditions of an actual installation in tests by constant once-through flow or circulation of water. The flow regime (3.16) used in this test simulates the operating conditions in domestic drinking water installations where stagnation times of water considerably exceed the times of through-flow. An assessment by testing is possible only if the influence of the flow regime (3.16) and the operation period (3.19) is taken into consideration. A compilation of data is needed, which has been determined under defined conditions over a prolonged period of time. In most cases, metal release decreases with operation time. For some alloying elements and impurities, however, an increase in their release can be observed.

1 Water intended for human consumption is 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. Luxembourg, Office for Official Publications of the European Communities. 3 November 1998.

3.13
test water water used for testing purposes
3.14 contact water test water which has been in contact with a test line
3.15 control water test water which has been in contact with the control line
3.16 flow regime consecutive alternating periods of flow, at a given flow rate, and stagnation of the test water in the test rig 3.17 representative water sample continuous column of water in the test line containing released corrosion products from the test pieces or test pipe uninfluenced by the remainder of the test rig 3.18 fractional sampling method used to check the proper hydraulic function of the rig and to determine the representative volume of the water samples 3.19 period of operation or operation period (T) period of time, expressed in weeks, during which the flow regime is operated for a particular test 3.20
stagnation time (t) period of time, expressed in hours, when the test water is static in the test rig

5 Test rig 5.1 General The test rig shall be constructed in accordance with Annex A in addition to the requirements given in this clause. A test rig shall have: one line for control purposes (5.3); three identical test lines for each material submitted for testing as set out in 5.4; and three identical reference lines (see 5.5) for comparative testing. With the exception of the materials under test, all materials used in the test rig that come into contact with the test water shall be inert for the purposes of the test.
Precautions shall be taken to ensure there is no transformation or contamination of the surface of test pieces or pipes during preparation for installation or during the installation itself. The materials for testing shall be in the form of pipes or test pieces. Where the material used for testing is intended to be used for pipes and other applications, it shall be tested as a pipe. 5.2 Test rig arrangement The test rig shall be arranged in the following way for the relevant purpose: • Assess a material as a reference material for a category of materials the test rig shall comprise three test lines made up of the material under examination and a control line. The rig shall be operated in several different waters covering a broad range of water compositions (see Part 2 of this standard). • For comparative testing of materials the test rig shall comprise three test lines containing the material under examination, three reference lines containing the reference material for the categor
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