Bsi bs en 15664 1 2008 + a1 2013

BRITISH STANDARD Influence of metallic materials on water intended for human consumption — Dynamic rig test for assessment of metal release — Part 1: Design and operation ICS 13.060.20; 67.250 BS EN 15664-1:2008 +A1:2013 BS EN 15664-1:2008+A1:2013 National foreword This British Standard is the UK implementation of EN 15664-1:2008+A1:2013 It supersedes BS EN 15664-1:2008, which is withdrawn The start and finish of text introduced or altered by amendment is indicated in the text by tags Tags indicating changes to CEN text carry the number of the CEN amendment For example, text altered by CEN amendment A1 is indicated by !" The UK participation in its preparation was entrusted to Technical Committee EH/6, Effects of materials on water quality A list of organizations represented on this committee can be obtained on request to its secretary This publication does not purport to include all the necessary provisions of a contract Users are responsible for its correct application Compliance with a British Standard cannot confer immunity from legal obligations This British Standard was published under the authority of the Standards Policy and Strategy Committee on 29 February 2008 © The British Standards Institution 2014 Published by BSI Standards Limited 2014 ISBN 978 580 75968 Amendments/corrigenda issued since publication Date Comments 31 January 2014 Implementation of CEN amendment A1:2013 EUROPEAN STANDARD EN 15664-1:2008+A1 NORME EUROPÉENNE EUROPÄISCHE NORM November 2013 ICS 67.250 English Version Influence of metallic materials on water intended for human consumption - Dynamic rig test for assessment of metal release - Part 1: Design and operation Influence des matériaux métalliques sur l'eau destinée la consommation humaine - Banc d'essai dynamique pour l'évaluation du relargage de métaux - Partie : Conception et fonctionnement Einfluss metallischer Werkstoffe auf Wasser für den menschlichen Gebrauch - Dynamischer Prüfstandversuch für die Beurteilung der Abgabe von Metallen - Teil 1: Auslegung und Betrieb This European Standard was approved by CEN on 28 October 2007 and includes Amendment approved by CEN on 12 October 2013 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, 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 © 2013 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members Ref No EN 15664-1:2008+A1:2013 E BS EN 15664-1:2008+A1:2013 EN 15664-1:2008+A1:2013 (E) Foreword This document (EN 15664-1:2008+A1:2013) has been prepared by Technical Committee CEN/TC 164 “Water supply”, 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 2014, and conflicting national standards shall be withdrawn at the latest by May 2014 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 This document includes Amendment approved by CEN on 12 October 2013 This document supersedes EN 15664-1:2008 The start and finish of text introduced or altered by amendment is indicated in the text by tags  This European Standard is one of a series of test methods that supports associated product standards The standard has been prepared under the mandate given to CEN by the Commission of the European Communities and the European Free Trade Area deleted text With respect to 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 European Standard has been drafted in accordance with the CEN Internal Regulations, Part This European Standard is Part of a series dealing with the test method to determine the release of metals from metallic products into drinking water comprising: — Part 1: Design and operation; ! — Part 2: Test waters." Part 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, 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 the United Kingdom BS EN 15664-1:2008+A1:2013 EN 15664-1:2008+A1:2013 (E) Contents Page Introduction Scope Normative references Terms and definitions Principle 5.1 5.2 5.3 5.4 5.4.1 5.4.2 5.4.3 5.5 Test rig General Test rig arrangement .9 Control line 10 Test lines 10 General 10 Materials in the form of pipes 10 Materials in the form of test pieces 10 Reference lines for comparative testing 10 6.1 6.2 6.3 6.3.1 6.3.2 6.3.3 6.3.4 6.4 Operating conditions 10 General 10 Conditioning 11 Fractional Sampling 11 General 11 Calculation and expression of results for fractional sampling 11 Requirements for the hydraulic function of the test rig 13 Determination of sampling volumes 13 Normal operation of the test rig 14 7.1 7.2 Test water 14 Composition 14 Check of test water 14 8.1 8.2 8.3 8.4 8.4.1 8.4.2 8.4.3 Sampling 15 General 15 Test water sampling 15 Sampling to determine metal release 15 Sampling volumes 16 General 16 Test lines with test pieces 16 Test pipes 16 Analysis 16 10 10.1 10.2 10.3 10.4 Expression of results 16 Metal concentrations after fixed stagnation time 16 Equivalent pipe concentration 16 Mean concentration after a given operating time 17 Presentation of the test results 17 11 Test report 17 Annex A (normative) Test rig components and assembly 19 A.1 Test rig 19 A.2 Test piece 20 BS EN 15664-1:2008+A1:2013 EN 15664-1:2008+A1:2013 (E) A.3 Connecting piece 21 Annex B (normative) Test rig flow regime 23 B.1 Test rig flow regime and sampling plan (24 h cycle) 23 B.2 Test rig flow regime and sampling plan for 16 h stagnation time 24 Annex C(normative) Test water monitoring and analysis — Data on test water composition 25 Annex D (informative) Example of graphs for expression of results 27 Bibliography 30 BS EN 15664-1:2008+A1:2013 EN 15664-1:2008+A1:2013 (E) Introduction The main application of metallic materials in water supply is within the domestic installation The test method given in this standard is designed to provide information on metal release over time from metallic materials into drinking water 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 are 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 BS EN 15664-1:2008+A1:2013 EN 15664-1:2008+A1:2013 (E) Scope This European Standard specifies a procedure to determine the release of metals from metallic materials used in construction products intended to come into contact with drinking water 1) The test can be used for three purposes: a) assess a material as a reference material for a category of materials using the results of several investigations in different waters covering a broad range of water compositions; b) assess a material for approval by way of comparative testing; c) obtain data on the interaction of local water with a material 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 1484, Water analysis — Guidelines for the determination of total organic carbon (TOC) and dissolved organic carbon (DOC) EN 10088-1, Stainless steels — Part 1: List of stainless steels EN 12502-1:2004, Protection of metallic materials against corrosion — Guidance on the assessment of corrosion likelihood in water distribution and storage systems — Part 1: General EN 25813, Water quality - Determination of dissolved oxygen — Iodometric method (ISO 5813:1983) EN 25814, Water quality — Determination of dissolved oxygen — Electrotechnical probe method (ISO 5814:1990) EN 27888, Water quality — Determination of electrical conductivity (ISO 7888:1985) EN ISO 6878, Water quality — Determination of phosphorus — Ammonium molybdate spectrometric method (ISO 6878:2004) EN ISO 8044:1999, Corrosion of metals and alloys — Basic terms and definitions (ISO 8044:1999) EN ISO 9963 (all parts), Water quality — Determination of alkalinity (ISO 9963, all parts) EN ISO 10304-1, Water quality — Determination of dissolved fluoride, chloride, nitrite, orthophosphate, bromide, nitrate and sulphate ions, using liquid chromatography of ions — Part 1: Method for water with low contamination (ISO 10304-1:1992) EN ISO 11885, Water quality — Determination of 33 elements by inductively coupled plasma atomic emission spectroscopy (ISO 11885:1996) 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 November 1998 BS EN 15664-1:2008+A1:2013 EN 15664-1:2008+A1:2013 (E) EN ISO 14911, Water quality — Determination of dissolved Li+, Na+, NH4+, K+, Mn2+, Ca2+, Mg2+, Sr2+ and Ba2+ using ion chromatography — Method for water and waste water (ISO 14911:1998) EN ISO 15586, Water quality — Determination of trace elements using atomic absorption spectrometry with graphite furnace (ISO 15586:2003) EN ISO 17294 (all parts), Water quality — Application of inductively coupled plasma mass spectrometry (ICP-MS) (ISO 17294, all parts) ISO 6058, Water quality — Determination of calcium content — EDTA titrimetric method ISO 6059, Water quality — Determination of the sum of calcium and magnesium — EDTA titrimetric method ISO 9297, Water quality — Determination of chloride — Silver nitrate titration with chromate indicator (Mohr's method) ISO 9964-3, Water quality — Determination of sodium and potassium — Part 3: Determination of sodium and potassium by flame emission spectrometry ISO 10523, Water quality — Determination of pH Terms and definitions For the purposes of this document, the terms and definitions given in EN ISO 8044:1999, EN 12502-1:2004 and the following apply 3.1 test rig assembly of test lines, control lines and where necessary reference lines together with test water inlet and discharge arrangements, see Annex A, Figure A.1 3.2 line continuous part between a check valve and the corresponding flow regulator 3.3 control line line containing a single length of pipe made of an inert material for the purposes of the test 3.4 test line line containing test pieces or a test pipe 3.5 reference line line containing test pieces each made of the same reference material or line containing a single length of pipe made of a reference material 3.6 dummy lines pipes made of an inert material for the purposes of the test used for the conditioning run of a newly built test rig 3.7 test pipe specimen that is representative of a construction product in the form of a pipe for use with drinking water in terms of material composition and surface characteristics BS EN 15664-1:2008+A1:2013 EN 15664-1:2008+A1:2013 (E) 3.8 test piece specimen that is representative of a construction product, which is not a pipe, for use with drinking water in terms of material composition, see Annex A, Clause A.2 3.9 category group of materials with the same metal release characteristics in respect of their application in products and behaviour in contact with drinking water 3.10 reference material metallic material of a tightly defined composition for which the characteristics of metal release into drinking water are known and reproducible, and are accepted for a category 3.11 surface characteristics aspects of the surface of a product exposed to the water, which are derived from the production process 3.12 local water water from a particular supply zone 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 BS EN 15664-1:2008+A1:2013 EN 15664-1:2008+A1:2013 (E) 3) registration mark or number of the test report; 4) name and address of the customer and/or producer of the tested material; 5) name and address of the manufacturer of the test pieces or test pipes (if different from No 4.); 6) number of this standard and year of its publication; 7) description of the candidate material to be tested and its reference material(s); i) shape of the tested specimen (e.g pipes); ii) chemical composition of the specimen; iii) surface characteristics of the specimen; iv) description of the manufacturing steps used to produce the test pieces or test pipes; v) production date and specific storing conditions; 8) dates of starting and finishing rig testing; 9) relevant testing conditions, i) water source; ii) test water analysis during the testing period (see Annex C); iii) iv) graphs of the following test water parameters against the operating period, T, for the whole testing period: I) temperature; II) conductivity; III) alkalinity; IV) pH-value; V) oxygen; VI) TOC; graph of room temperature against the operating period, T, for the whole testing period; 10) description of any deviations from the specified procedure; 11) specification of the analytical devices used and their detection limits; 12) expression of the results (see Clause 10); 13) date of report and signature 18 BS EN 15664-1:2008+A1:2013 EN 15664-1:2008+A1:2013 (E) Annex A (normative) Test rig components and assembly A.1 Test rig The test rig shall be set up as shown in Figure A.1, Figure A.2 and Figure A.3 The test pieces shall be as shown in A.2 Check valves shall be provided in order to prevent interferences between test and control lines and vice versa The outlet shall be at least 300 mm higher than the inlet The test line shall not at any point be lower than the previous section The shut-off time of the outlet valves shall be in the range of 50 ms to 100 ms The flow regulator shall be positioned down stream of the test pieces Key test piece test line pipe test line control line inlet filter water meter distributing pipe and check valve test piece and connectors flow regulator 10 outlet valve 11 optional flow meter 12 inlet water sampling point Figure A.1 — Schematic of a test rig 19 BS EN 15664-1:2008+A1:2013 EN 15664-1:2008+A1:2013 (E) Dimensions in millimetres Key test piece sampling point Figure A.2 — Schematic of a test line with test pieces for fittings materials and the definition of the “representative water sample” Key check valve flow regulator sampling point flow regulator ΔP ≥ 10 Pa electronic water meter inlet automatic valve representative water sample Figure A.3 — Schematic of a test or control line with test pipe or control pipe and definition of the “representative water sample” A.2 Test piece The dimensions of test pieces shall be as shown in Figure A.4 20 BS EN 15664-1:2008+A1:2013 EN 15664-1:2008+A1:2013 (E) Dimensions in millimetres Figure A.4 — Test piece with machined inner surface A.3 Connecting piece To ensure that the connecting pipes not intrude into the test length of the test piece, connecting pieces shall be as shown in Figure A.5 21 BS EN 15664-1:2008+A1:2013 EN 15664-1:2008+A1:2013 (E) Key press/crimp connection connecting piece Figure A.5 — Connecting piece 22 BS EN 15664-1:2008+A1:2013 EN 15664-1:2008+A1:2013 (E) Annex B (normative) Test rig flow regime B.1 Test rig flow regime and sampling plan (24 h cycle) Seven water samples shall be taken after stagnation periods of 0,5 h to h, in accordance with the schedule shown in Table B.1 Table B.1 — Test rig flow regime and sampling plan (24 h cycle) Hours of cycle Time Stagnation time Through-flow a 0,00 to 0,01 22,00 to 22,01 0,01 to 8,00 22,01 to 6,00 479 8,00 to 8,01 6,00 to 6,01 8,01 to 8,30 6,01 to 6,30 29 8,30 to 8,31 6,30 to 6,31 8,31 to 9,00 6,31 to 7,00 29 9,00 to 9,02 7,00 to 7,02 9,02 to 9,15 7,02 to 7,15 13 9,15 to 9,16 7,15 to 7,16 9,16 to 9,30 7,16 to 7,30 14 9,30 to 9,31 7,30 to 7,31 9,31 to 10,00 7,31 to 8,00 29 10,00 to 10,02 8,00 to 8,02 10,02 to 11,00 8,02 to 9,00 58 11,00 to 11,02 9,00 to 9,02 11,02 to 13,00 9,02 to 11,00 118 13,00 to 13,02 11,00 to 11,02 13,02 to 13,30 11,02 to 11,30 28 13,30 to 13,31 11,30 to 11,31 13,31 to 13,45 11,31 to 11,45 14 13,45 to 13,46 11,45 to 11,46 13,46 to 14,00 11,46 to 12,00 14 14,00 to 14,02 12,00 to 12,02 14,02 to 14,30 12,02 to 12,30 28 14,30 to 14,31 12,30 to 12,31 14,31 to 15,00 12,31 to 13,00 29 15,00 to 15,01 13,00 to 13,01 15,01 to 19,00 13,01 to 17,00 239 Sample b after 479 (8 h) 5 10 5 after 29 (0,5 h) 10 after 58 (1 h) 10 after 118 (2 h) 10 after 28 (0,5 h) 5 10 5 after 239 (4 h) 23 BS EN 15664-1:2008+A1:2013 EN 15664-1:2008+A1:2013 (E) 19,00 to 19,02 17,00 to 17,02 19,02 to 20,00 17,02 to 18,00 58 20,00 to 20,01 18,00 to 18,01 20,01 to 20,30 18,01 to 18,30 29 20,30 to 20,31 18,30 to 18,31 20,31 to 21,00 18,31 to 19,00 29 21,00 to 21,02 19,00 to 19,02 21,02 to 21,15 19,02 to 19,15 13 21,15 to 21,16 19,15 to 19,16 21,16 to 21,30 19,16 to 19,30 14 21,30 to 21,31 19,30 to 19,31 21,31 to 22,00 19,31 to 20,00 29 22,00 to 22,01 20,00 to 20,01 22,01 to 23,00 20,01 to 21,00 59 23,00 to 23,01 21,00 to 21,01 23,01 to 24,00 21,01 to 22,00 59 a ± 10 % b Only for materials which form a corrosion product layer 10 after 58 (1 h) 5 10 5 5 B.2 Test rig flow regime and sampling plan for 16 h stagnation time For samples taken after a stagnation time of 16 h, test rig operation shall be adapted to that shown in Table B.2 Thereafter normal operation in accordance with Table B.1 shall resume starting with the h stagnation period according to Table B.1 Table B.2 — Test rig flow regime and sampling plan for a 16 h stagnation time Hours of cycle 24 Stagnation time Through-flow (min) (l) 8,00 to 8,02 10 8,02 to 24,00 958 24,00 to 0,01 Sample After 958 BS EN 15664-1:2008+A1:2013 EN 15664-1:2008+A1:2013 (E) Annex C (normative) Test water monitoring and analysis — Data on test water composition Required test water parameters, frequency of monitoring and measurement methods Table C.1 — Required inspection frequency of parameters in the test water Parameter Measurement method a Unit Monitoring rate °C Once per hour or online monitoring c Hydrogen ion concentration b pH units Once per hour or online monitoring c ISO 10523 Specific electrical conductivity b µS cm−1 Once per hour or online monitoring c EN 27888 mg/l Once per hour or online monitoring c EN 25813 mmol/l Weekly EN ISO 9963 (all parts) Total organic carbon mg/l Weekly EN 1484 Free carbon dioxide mmol/l Weekly by direct measurement or by calculation from pH, alkalinity and temperature e mg/l Monthly ISO 6058 ISO 6059 Water temperature b Oxygen b Total alkalinity b Calcium EN 25814 EN ISO 11885 EN ISO 14911 EN ISO 14911 Magnesium mg/l Monthly EN ISO 11885 ISO 6059 EN ISO 14911 Potassium mg/l Monthly EN ISO 11885 EN ISO 14911 Sodium mg/l Monthly EN ISO 11885 ISO 9964-3 EN ISO 14911 Chloride mg/l Monthly EN ISO 10304-1 ISO 9297 Nitrate mg/l Monthly EN ISO 10304-1 Sulphate mg/l Monthly EN ISO 10304-1 Phosphorus d mg/l Monthly EN ISO 6878 EN ISO 11885 Silicon dioxide d mg/l Monthly EN ISO 11885 25 BS EN 15664-1:2008+A1:2013 EN 15664-1:2008+A1:2013 (E) Copper μg/l Monthly EN ISO 11885 EN ISO 15586 EN ISO 17294 (all parts) μg/l Iron Monthly EN ISO 11885 EN ISO 15586 EN ISO 17294 (all parts) Manganese μg/l Monthly EN ISO 11885 EN ISO 15586 EN ISO 17294 (all parts) μg/l Zinc Monthly EN ISO 11885 EN ISO 15586 EN ISO 17294 (all parts) Other metals μg/l Before start of test if appropriate EN ISO 11885 EN ISO 15586 EN ISO 17294 (all parts) a Alternative methods, either calibrated against the referenced method or which have proven comparable analytical performance may be used b Measuring shall take place immediately at the point of sampling or in situ c In case of online monitoring the laboratory shall ensure proper calibration of the instruments d Enquiries should be made with the water supplier to determine if they are using water treatment chemicals including phosphorus and silicon compounds e For the calculation of free carbon dioxide the measurements of pH, temperature and alkalinity shall be taken from the same water sample “. 26 BS EN 15664-1:2008+A1:2013 EN 15664-1:2008+A1:2013 (E) Annex D (informative) Example of graphs for expression of results Key concentration (μg/l) stagnation time (h) Figure D.1 — Example of a stagnation curve 27 BS EN 15664-1:2008+A1:2013 EN 15664-1:2008+A1:2013 (E) Key concentration (μg/l) operation period (weeks) test line test line Figure D.2 — Example of a run-time curve for the 4h stagnation periods 28 test line BS EN 15664-1:2008+A1:2013 EN 15664-1:2008+A1:2013 (E) Key concentration (μg/l) operation period (weeks) test line test line test line Figure D.3 — Example of a run-time curve of the average MEP(T) 29 BS EN 15664-1:2008+A1:2013 EN 15664-1:2008+A1:2013 (E) Bibliography [1] 30 ENV ISO 13530, Water (ISO/TR 13530:1997) quality — Guide to analytical quality control for water analysis This page deliberately set blank NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW British Standards 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