SIST EN 13052-1:2001

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Vpliv snovi na pitno vodo - Organske snovi - Ugotavljanje barve in motnosti vode v vodovodnih napeljavah - 1. del: Preskusna metodaEinfluss von Werkstoffen auf Wasser für den menschlichen Gebrauch - Organische Werkstoffe - Bestimmung von Färbung und Trübung von Wasser in Rohrleitungssystemen - Teil 1: PrüfverfahrenInfluence des matériaux sur l'eau destinée a la consommation humaine - Matériaux organiques - Evaluation de la couleur et de la turbinité de l'eau dans les réseaux de conduites - Partie 1: Méthode d'essaiInfluence of materials on water intended for human consumption - Organic materials - Determination of colour and turbidity of water in piping systems - Part 1: Test method91.140.60Sistemi za oskrbo z vodoWater supply systems13.060.20Pitna vodaDrinking waterICS:Ta slovenski standard je istoveten z:EN 13052-1:2001SIST EN 13052-1:2001en01-december-2001SIST EN 13052-1:2001SLOVENSKI
STANDARD



SIST EN 13052-1:2001



EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 13052-1September 2001ICS 13.060.20; 23.040.01English versionInfluence of materials on water intended for human consumption- Organic materials - Determination of colour and turbidity ofwater in piping systems - Part 1: Test methodInfluence des matériaux sur l'eau destinée à laconsommation humaine - Matériaux organiques -Evaluation de la couleur et de la turbinité de l'eau dans lesréseaux de conduites - Partie 1: Méthode d'essaiEinfluss von Werkstoffen auf Wasser für den menschlichenGebrauch - Organische Werkstoffe - Bestimmung vonFärbung und Trübung von Wasser inRohrleitungssystemen - Teil 1: PrüfverfahrenThis European Standard was approved by CEN on 17 August 2001.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 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 Management Centre has the same status as the officialversions.CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece,Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMITÉ EUROPÉEN DE NORMALISATIONEUROPÄISCHES KOMITEE FÜR NORMUNGManagement Centre: rue de Stassart, 36
B-1050 Brussels© 2001 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 13052-1:2001 ESIST EN 13052-1:2001



EN 13052-1:2001 (E)2ContentspageForeword.4Introduction.51Scope.62Normative references.63Terms and definitions.64Principle.85Reagents.85.1Disinfection reagents.85.2Waters to be used for testing.85.3Cleaning liquids for apparatus.86Apparatus.96.1Apparatus for migration assessment.96.2Apparatus for colour and turbidity assessment.97Samples of product and test pieces.97.1General.97.2Surface-area-to-volume ratio (S/V).107.2.1General.107.2.2Pipes.107.2.3Fittings, ancillaries and joints.118Preparation of reagents and apparatus.118.1reference water.118.2Test water with chlorine content.118.3Disinfection treatment water.118.4Cleaning of the apparatus.11923 °C test procedure.129.1General.129.2Flushing.129.3Stagnation.139.3.1
Stagnation with disinfection water.139.4Prewashing.139.4.1Flushing.139.4.2Rinsing.139.5Migration.1310Elevated temperature test procedure.1410.1General.1410.2Flushing.1410.3Stagnation.1410.3.1Stagnation with disinfection water.1410.3.2Stagnation without disinfection water.1410.4Flushing.1510.5Elevated temperature stagnation.1510.6Rinsing.1510.7Migration.1511Determination of colour and turbidity.15SIST EN 13052-1:2001



EN 13052-1:2001 (E)312Expression of results.1513Test report.1613.1General information.1613.2The information on the product shall at least include:.1613.3Information on the procedure.1713.4Test results.17Annex A (informative)
Arrangement for flushing large diameters pipes.18Annex B (informative)
Schematic presentation of the test method.19B.1Products to be tested at (23
2) °C.20B.2Products to be tested at elevated temperatures.21SIST EN 13052-1:2001



EN 13052-1:2001 (E)4ForewordThis European Standard 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 ofan identical text or by endorsement, at the latest by March 2002, and conflicting national standardsshall be withdrawn at the latest by March 2002.This European Standard has been prepared by CEN/TC 164 "Water supply" in co-operation withCEN/TC 155 "Plastics piping systems and ducting systems" and consists of two parts:Part 1: Test method;Part 2: Interpretation of laboratory values relative to field-use conditions.This standard is part 1. It contains the two following annexes.Annex A, which is informative, describes an arrangement for
flushing large diameter pipes.Annex B, which is informative, summarizes schematically the relationship between the variousstages of the document.The material- dependent parameters and/or performance requirements are incorporated into theProduct Standards, for example the System Standards for plastics piping systems.According to the CEN/CENELEC Internal Regulations, the national standards organizations of thefollowing countries are bound to implement this European Standard: Austria, Belgium, CzechRepublic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg,Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and the United Kingdom.SIST EN 13052-1:2001



EN 13052-1:2001 (E)5IntroductionIn respect of potential adverse effects on the quality of water intended for human consumptioncaused by the materials, it is recalled to mind that, while awaiting the adoption of verifiableEuropean acceptance criteria, such as proposed in a future European Acceptance Scheme,national regulations remain in force.SIST EN 13052-1:2001



EN 13052-1:2001 (E)61ScopeThis standard specifies a method for determining the colour and turbidity of test waters after theircontact with the organic materials used in piping systems. The term 'products' comprises pipes,fittings, ancillaries including their coatings and joints.The test method described in this standard is applicable to products to be used under variousconditions for the transport of water intended for human consumption and raw water used for themanufacture of water intended for human consumption. Coatings or protective layers on productswhich are not intended to be in contact with these types of water are not covered by this method.This standard specifies the test method comprising a set of procedures with and without adisinfection pretreatment and possible temperatures for the test waters. The use of the disinfectionpretreatment and the choice of the test temperature are dependant on the relevant nationalregulations and/or the system or product standards.2Normative referencesThis European Standard incorporates by dated or undated reference, provisions from otherpublications. These normative references are cited at the appropriate places in the text, and thepublications are listed hereafter. For dated references, subsequent amendments to or revisions ofany of these publications apply to this European Standard only when incorporated in it byamendment or revision. For undated references the latest edition of the publication referred toapplies (including amendments).EN ISO 7027:1999, Water quality - Determination of turbidity (ISO 7027:1999).EN ISO 7393-2:2000, Water quality – Determination of free chlorine and totalchlorine -Part 2: Colorimetric method using N, N-diethyl-1, 4-phenylenediamine for routine controlpurposes (ISO 7393-2:1985).EN ISO 7887:1994, Water quality - Examination and determination of colour (ISO 7887:1994).3Terms and definitionsFor the purpose of this standard the following terms and definitions apply:3.1colouroptical property that causes the changing of the spectral composition of transmitted visible lightmeasured at three wavelengths (see clause 3 of EN ISO 7887:1994)3.2turbidityreduction of transparency of a liquid caused by the presence of undissolved matter (see clause 3of EN ISO 7027:1999 as a source of this definition)SIST EN 13052-1:2001



EN 13052-1:2001 (E)73.3reference waterwater complying with the following requirements without and with addition of 1mg/l chlorine- for colour : spectral absorption coefficient less than 0,1 m-1 ;- for turbidity : FNU < 0,13.4test waterswater used for testing purposes as described in 5.2.2 and 5.2.33.5migration watertest water (see 3.4) which has been in contact with a test piece under specified conditions3.6blank watertest water (see 3.4) which has been kept at the same specified conditions as migration water butwithout contact with the test piece(s)3.7flushing watertapwater distributed by a public supplier3.8disinfection treatment waterwater containing chlorine as described in 5.1.23.9fitting, ancillarycomplete functional unit made up of one or more components and materials, parts of which are incontact with drinking water, e.g. taps, valves, water filters3.10producta manufactured item, in its finished form3.11sampleone or more units, or specified quantity, drawn from a batch or lot, selected at random forinspection, e.g. in a laboratory3.12specimena single sample of a product, to be prepared to obtain a single test result3.13test piecethe specimen or portion which is conditioned, treated or otherwise prepared to be tested to obtaina single test resultSIST EN 13052-1:2001



EN 13052-1:2001 (E)84PrincipleFollowing a defined pretreatment procedure of flushing, stagnation with or without disinfection andthen prewashing, the surface of the test pieces, exposed in practice to drinking water, is broughtinto contact with test waters.The migration procedure is carried out three times on the same test piece under specifiedconditions as follows :Test pieces are put in contact with chlorinated and unchlorinated waters for 72 h at 23 °C, or put incontact with unchlorinated water for 24 h at specified temperature in the range 60 °C to 85 °C.After this contact, the migration water is assessed for colour and turbidity.Additional information is given in the relevant product standard, system standards or in a futureEuropean Acceptance Scheme concerning:-the temperature to be used in the test,- the need for a disinfection pretreatment,- the need to carry out a 23 °C test, using chlorinated water, for products being tested atelevated temperatures.5Reagents5.1Disinfection reagents5.1.1 Sodium hypochlorite solution, prepared from a commercial solution of sodium hypochlorite(NaOCl) and having a known concentration of about 0,1 % by mass of free chlorine determined inaccordance with EN ISO 7393-2:2000.This sodium hypochlorite solution is unstable and shall be prepared on the day of use.5.1.2 Disinfection treatment water, shall consist of a batch of reference water (see 5.3.3) with afree chlorine content of (50
5) mg/l as Cl2 after addition of sodium hypochlorite solution(see 5.1.1).5.2Waters to be used for testing5.2.1 Reference water shall be without colour and turbidity.5.2.2 Test water without chlorine content, shall consist of a batch of reference water (see 5.3.3)used for contact with test piece(s)and preparation of the blank water.5.2.3 Test water with chlorine content, shall consist of a batch of reference water (see 5.3.3) with afree chlorine content of (1 ± 0,2) mg/l after addition of sodium hypochlorite solution (see 5.1).5.3Cleaning liquids for apparatus- biodegradable detergent;SIST EN 13052-1:2001



EN 13052-1:2001 (E)9- hydrochloric acid, 2 mol/l (analytical grade) ;- nitric acid, 10 % or 1,5 mol/l ( analytical grade);- hydrogen peroxide, 3 % vol/vol (analytical grade).6Apparatus6.1 Apparatus for migration assessmentThe following equipment shall be used:6.1.1 Vessels, containers, connectors and stoppers, made of materials which do not affect thecolour and turbidity assessment under the specified test conditions, such as glass,polytetrafluorethylene (PTFE) or stainless steel.NOTE
The material PTFE should only be used when there is a small contact area with the test water. Thus PTFE isunsuitable for containers.6.1.2 Equipment, capable of maintaining the test temperature within ± 2 °C, for the duration of thetest.6.2Apparatus for colour and turbidity assessmentThe following apparatus shall be used:6.2.1 Apparatus for colour analysis complying with the requirements of EN ISO 7887:1994, clause3.5.6.2.2 Apparatus for turbidity analysis complying with the requirements of EN ISO 7027:1999, 6.3.7Samples of product and test pieces7.1General7.1.1 Sampling of products shall be performed in accordance with the relevant product standard,system standard or the national regulations when applicable.7.1.2 If it is necessary to store samples before
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