BS EN 13052-1-2001 Influence of materials on water intended for human consumption - Organic materials - Determination of colour and turbidity of water in piping systems - Test meth.pdf

1、BRITISH STANDARD BS EN 13052-1:2001 Influence of materials on water intended for human consumption Organic materials Determination of colour and turbidity of water in piping systems Part 1: Test method The European Standard EN 13052-1:2001 has the status of a British Standard ICS 13.060.20; 13.060.6

2、0; 23.040.01 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBS EN 13052-1:2001 This British Standard, having been prepared under the direction of the Health and Environment Sector Policy and Strategy Committee, was published under the authority of the Standards Policy and Stra

3、tegy Committee on 16 November 2001 BSI 16 November 2001 ISBN 0 580 38396 2 National foreword This British Standard is the official English language version of EN 13052-1:2001. The UK participation in its preparation was entrusted to Technical Committee EH/6, Effects of materials on water quality, wh

4、ich has the responsibility to: A list of organizations represented on this committee can be obtained on request to its secretary. Cross-references The British Standards which implement international or European publications referred to in this document may be found in the BSI Standards Catalogue und

5、er the section entitled “International Standards Correspondence Index”, or by using the “Find” facility of the BSI Standards Electronic Catalogue. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their correct a

6、pplication. Compliance with a British Standard does not of itself confer immunity from legal obligations. aid enquirers to understand the text; present to the responsible European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; monitor rela

7、ted international and European developments and promulgate them in the UK. Summary of pages This document comprises a front cover, an inside front cover, the EN title page, pages 2 to 21 and a back cover. The BSI copyright date displayed in this document indicates when the document was last issued.

8、Amendments issued since publication Amd. No. Date CommentsEUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 13052-1 September 2001 ICS 13.060.20; 23.040.01 English version Influence of materials on water intended for human consumption Organic materials Determination of colour and turbidity of wat

9、er in piping systems Part 1: Test method Influence des matriaux sur leau destine la consommation humaine Matriaux organiques Evaluation de la couleur et de la turbinit de leau dans les rseaux de conduites Partie 1: Mthode dessai Einfluss von Werkstoffen auf Wasser fr den menschlichen Gebrauch Organi

10、sche Werkstoffe Bestimmung von Frbung und Trbung von Wasser in Rohrleitungssystemen Teil 1: Prfverfahren This 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 European Sta

11、ndard 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 Management Centre or to any CEN member. This European Standard exists in three official versions (English, French,

12、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 Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark,

13、Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: rue de Stassart, 36 B-1050 Brus

14、sels 2001 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 13052-1:2001 EEN 13052-1:2001 (E) 2 Contents Page Foreword .4 Introduction.5 1 Scope .6 2 Normative references6 3 Terms and definitions .6 4 Principle.8 5 Reagents 8 5.1 Dis

15、infection reagents.8 5.2 Waters to be used for testing 8 5.3 Cleaning liquids for apparatus .9 6 Apparatus.9 6.1 Apparatus for migration assessment .9 6.2 Apparatus for colour and turbidity assessment9 7 Samples of product and test pieces 9 7.1 General .9 7.2 Surface-area-to-volume ratio (S/V)10 7.2

16、.1 General .10 7.2.2 Pipes .10 7.2.3 Fittings, ancillaries and joints.11 8 Preparation of reagents and apparatus .11 8.1 reference water .11 8.2 Test water with chlorine content 11 8.3 Disinfection treatment water 11 8.4 Cleaning of the apparatus .11 9 23 C test procedure12 9.1 General .12 9.2 Flush

17、ing.12 9.3 Stagnation .13 9.3.1 Stagnation with disinfection water13 9.4 Prewashing13 9.4.1 Flushing .13 9.4.2 Rinsing .13 9.5 Migration .13 10 Elevated temperature test procedure 14 10.1 General .14 10.2 Flushing.14 10.3 Stagnation .14 10.3.1 Stagnation with disinfection water14 10.3.2 Stagnation w

18、ithout disinfection water.14 10.4 Flushing.15 10.5 Elevated temperature stagnation.15 10.6 Rinsing 15 10.7 Migration .15 11 Determination of colour and turbidity15 12 Expression of results16EN 13052-1:2001 (E) 3 13 Test report16 13.1 General information.16 13.2 The information on the product shall a

19、t least include:16 13.3 Information on the procedure 17 13.4 Test results17 Annex A (informative) Arrangement for flushing large diameters pipes .18 Annex B (informative) Schematic presentation of the test method .19 B.1 Products to be tested at (23 2) C 20 B.2 Products to be tested at elevated temp

20、eratures 21EN 13052-1:2001 (E) 4 Foreword This 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 of an identical text or by end

21、orsement, at the latest by March 2002, and conflicting national standards shall be withdrawn at the latest by March 2002. This European Standard has been prepared by CEN/TC 164, Water supply, in co-operation with CEN/TC 155, Plastics piping systems and ducting systems, and consists of two parts: Par

22、t 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 schemat

23、ically the relationship between the various stages of the document. The material-dependent parameters and/or performance requirements are incorporated into the Product Standards, for example the System Standards for plastics piping systems. According to the CEN/CENELEC Internal Regulations, the nati

24、onal standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and the United Kingdom.EN

25、 13052-1:2001 (E) 5 Introduction In respect of potential adverse effects on the quality of water intended for human consumption caused by the materials, it is recalled to mind that, while awaiting the adoption of verifiable European acceptance criteria, such as proposed in a future European Acceptan

26、ce Scheme, national regulations remain in force.EN 13052-1:2001 (E) 6 1 Scope This standard specifies a method for determining the colour and turbidity of test waters after their contact with the organic materials used in piping systems. The term “products” comprises pipes, fittings, ancillaries inc

27、luding their coatings and joints. The test method described in this standard is applicable to products to be used under various conditions for the transport of water intended for human consumption and raw water used for the manufacture of water intended for human consumption. Coatings or protective

28、layers on products which 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 a disinfection pretreatment and possible temperatures for the test waters. The use of the disin

29、fection pretreatment and the choice of the test temperature are dependant on the relevant national regulations and/or the system or product standards. 2 Normative references This European Standard incorporates by dated or undated reference, provisions from other publications. These normative referen

30、ces are cited at the appropriate places in the text, and the publications are listed hereafter. For dated references, subsequent amendments to or revisions of any of these publications apply to this European Standard only when incorporated in it by amendment or revision. For undated references the l

31、atest edition of the publication referred to applies (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-phenylenedia

32、mine for routine control purposes (ISO 7393-2:1985). EN ISO 7887:1994, Water quality Examination and determination of colour (ISO 7887:1994). 3 Terms and definitions For the purpose of this standard the following terms and definitions apply: 3.1 colour optical property that causes the changing of th

33、e spectral composition of transmitted visible light measured at three wavelengths (see clause 3 of EN ISO 7887:1994) 3.2 turbidity reduction of transparency of a liquid caused by the presence of undissolved matter (see clause 3 of EN ISO 7027:1999 as a source of this definition) 3.3 reference water

34、water complying with the following requirements without and with addition of 1 mg/l chlorine for colour: spectral absorption coefficient less than 0,1 m -1 ; for turbidity: FNU 0,1EN 13052-1:2001 (E) 7 3.4 test waters water used for testing purposes as described in 5.2.2 and 5.2.3 3.5 migration wate

35、r test water (see 3.4) which has been in contact with a test piece under specified conditions 3.6 blank water test water (see 3.4) which has been kept at the same specified conditions as migration water but without contact with the test piece(s) 3.7 flushing water tapwater distributed by a public su

36、pplier 3.8 disinfection treatment water water containing chlorine as described in 5.1.2 3.9 fitting, ancillary complete functional unit made up of one or more components and materials, parts of which are in contact with drinking water, e.g. taps, valves, water filters 3.10 product a manufactured ite

37、m, in its finished form 3.11 sample one or more units, or specified quantity, drawn from a batch or lot, selected at random for inspection, e.g. in a laboratory 3.12 specimen a single sample of a product, to be prepared to obtain a single test result 3.13 test piece the specimen or portion which is

38、conditioned, treated or otherwise prepared to be tested to obtain a single test resultEN 13052-1:2001 (E) 8 4 Principle Following a defined pretreatment procedure of flushing, stagnation with or without disinfection and then prewashing, the surface of the test pieces, exposed in practice to drinking

39、 water, is brought into contact with test waters. The migration procedure is carried out three times on the same test piece under specified conditions as follows: Test pieces are put in contact with chlorinated and unchlorinated waters for 72 h at 23 C, or put in contact with unchlorinated water for

40、 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 future European Acceptance Scheme concerning: the temperature to be used

41、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 at elevated temperatures. 5 Reagents 5.1 Disinfection reagents 5.1.1 Sodium hypochlorite solution, prepared from a commercial solution of sodium hypochlorite (

42、NaOCl) and having a known concentration of about 0,1 % by mass of free chlorine determined in accordance 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 (se

43、e 5.3.3) with a free chlorine content of (50 5) mg/l as Cl 2after addition of sodium hypochlorite solution (see 5.1.1). 5.2 Waters to be used for testing 5.2.1 Reference water shall be without colour and turbidity. 5.2.2 Test water without chlorine content, shall consist of a batch of reference wate

44、r (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 a free chlorine content of (1 0,2) mg/l after addition of sodium hypochlorite solution (see 5.1).EN 13052-1:2001 (

45、E) 9 5.3 Cleaning liquids for apparatus biodegradable detergent; hydrochloric acid, 2 mol/l (analytical grade); nitric acid, 10 % or 1,5 mol/l ( analytical grade); hydrogen peroxide, 3 % vol/vol (analytical grade). 6 Apparatus 6.1 Apparatus for migration assessment The following equipment shall be u

46、sed: 6.1.1 Vessels, containers, connectors and stoppers, made of materials which do not affect the colour 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 co

47、ntact area with the test water. Thus PTFE is unsuitable for containers. 6.1.2 Equipment, capable of maintaining the test temperature within 2 C, for the duration of the test. 6.2 Apparatus for colour and turbidity assessment The following apparatus shall be used: 6.2.1 Apparatus for colour analysis

48、complying with the requirements of EN ISO 7887:1994, 3.5. 6.2.2 Apparatus for turbidity analysis complying with the requirements of EN ISO 7027:1999, 6.3. 7 Samples of product and test pieces 7.1 General 7.1.1 Sampling of products shall be performed in accordance with the relevant product standard,

49、system standard or the national regulations when applicable. 7.1.2 If it is necessary to store samples before testing, they shall be protected from contamination. If the manufacturer provides written storage instructions they shall be followed. The samples shall be stored in their original form as delivered. Where appropriate, storage containers shall be cleaned using the same procedures as are used for the test containers. 7.1.3 The test pieces shall be prepared such that only the surface inten