BS-6920-3-2000.pdf
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1、| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | BRITISH STANDARD BS 6920-3:2000 ICS 13.060
2、.20 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW Suitability of non-metallic products for use in contact with water intended for human consumption with regard to their effect on the quality of the water Part 3: High temperature tests This British Standard, having been prepa
3、red under the direction of the Health and Environment Sector Committee, was published under the authority of the Standards Committee and comes into effect on 15 May 2000 BSI 05-2000 The following BSI references relate to the work on this standard: Committee reference EH/3/7 Draft for comment 99/5601
4、32 DC ISBN 0 580 33112 1 BS 6920-3:2000 Amendments issued since publication Amd. No.DateComments Committees responsible for this British Standard The preparation of this British Standard was entrusted by Technical Committee EH/3, Water quality, to Subcommittee EH/3/7, Effects of materials on water q
5、uality, upon which the following bodies were represented: Association of Manufacturers of Domestic Electrical Appliances Automatic Vending Association of Britain British Bathroom Council British Cement Association British Coatings Federation Ltd. British Malleable Tube Fittings Association British N
6、on-Ferrous Metals Federation British Plastics Federation British Plumbing Fittings Manufacturers Association British Precast Concrete Federation Ltd. British Rubber Manufacturers Association British Valve and Actuator Manufacturers Association British Water Department of the Environment for Northern
7、 Ireland The Drinking Water Inspectorate Galvanizers Association Laboratory of the Government Chemist Lead Development Association Pipeline Industries Guild UK Steel Association UK Water Byelaws Scheme Water Research Centre Water UK Zinc Development Association BS 6920-3:2000 BSI 05-2000i Contents P
8、age Committees responsibleInside front cover Forewordii Introduction1 1Scope1 2Normative references1 3Terms and definitions1 4Principle1 5Apparatus1 6Samples1 7Test procedure2 8Expression of results2 9Test report2 ii BSI 05-2000 BS 6920-3:2000 Foreword This part of BS 6920 has been prepared by Subco
9、mmittee EH/3/7 under the direction of the Health and Environment Sector Committee. This part of BS 6920 supersedes BS 6920-3:1990, which is withdrawn. This edition introduces technical changes but it does not reflect a full review or revision of the standard. BS 6920 is published in several parts, n
10、amely Part 1: Specification, Part 2: Methods of test, Part 3: High temperature tests and Part 4: The GCMS identification of water leachable organic substances. Part 2 is further subdivided into a number of sections and subsections as follows. Section 2.1: Samples for testing; Section 2.2: Odour and
11、flavour of water; Subsection 2.2.1: General method of test; Subsection 2.2.2: Method of testing odours and flavours imparted to water by hoses and composite pipes and tubes; Subsection 2.2.3: Method of testing odours and flavours imparted to water by hoses for conveying water for food and drink prep
12、aration; Section 2.3: Appearance of water; Section 2.4: Growth of aquatic microorganisms; Section 2.5: The extraction of substances that may be of concern to public health; Section 2.6: The extraction of metals. Annex A is informative. A British Standard does not purport to include all the necessary
13、 provisions of a contract. Users of British Standards are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, pages i and ii, pages 1 an
14、d 2, an inside back cover and a back cover. The BSI copyright notice displayed in this document indicates when the document was last issued. BSI 05-20001 BS 6920-3:2000 Introduction Non-metallic products used in contact with hot and boiling water can leach water soluble compounds not detectable in s
15、ignificant quantities when tested under the conditions of test described in BS 6920-2. Such products, if satisfactory in the tests described in part 2, can be tested by the methods described in this part of BS 6920 if they are intended for use in hot domestic water installations where the water in c
16、ontact with the product will pass to a draw-off point and hence could be used for drinking or culinary purposes. Materials use in plastics kettles can also be assessed for suitability for drinking purposes using these tests. NOTEIt is recommended that no boiling water tests are undertaken on non-met
17、allic products until these products have been shown to comply with the complete requirements of BS 6920, including an Odour and Flavour assessment undertaken at 85 8C. 1 Scope This part of BS 6920 describes methods designed to assess the ability of a non-metallic product to affect hot and boiling wa
18、ter intended for human consumption by imparting a discernible odour or flavour, or any noticeable colour or turbidity. It is also applicable in assessing the leachability in hot or boiling water of metals from non-metallic products and the extraction from such products of substances that may be of c
19、oncern to public health. It is not applicable to the test for growth of aquatic microorganisms (see BS 692-2.4). Products used exclusively in industrial or steam services are excluded. 2 Normative references The following normative documents contain provisions which, through reference in this text,
20、constitute provisions of this part of BS 6920. For dated references, subsequent amendments to or revisions of any of these publications do not apply. For undated references, the latest edition of the publication referred to applies. BS 6920-1:2000, Suitability of non-metallic products for use in con
21、tact with water intended for human consumption with regard to their effect on the quality of the water Part 1: Specification. BS 6920-2.2.1, Suitability of non-metallic products for use in contact with water intended for human consumption with regard to their effect on the quality of the water Part
22、2: Methods of test Section 2.2: Odour and flavour of water Subsection 2.2.1: General method of test. BS 6920-2.2.2, Suitability of non-metallic products for use in contact with water intended for human consumption with regard to their effect on the quality of the water Part 2: Methods of test Sectio
23、n 2.2: Odour and flavour of water Subsection 2.2.2: Method of testing tastes imparted to water by hoses. BS 6920-2.2.3, Suitability of non-metallic products for use in contact with water intended for human consumption with regard to their effect on the quality of the water Part 2: Methods of test Se
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