《BS-3402-1969.pdf》由会员分享，可在线阅读，更多相关《BS-3402-1969.pdf（14页珍藏版）》请在三一文库上搜索。
1、BRITISH STANDARD BS 3402:1969 Incorporating Amendment Nos. 1 and 2 Specification for Quality of vitreous china sanitary appliances Licensed Copy: sheffieldun sheffieldun, na, Wed Nov 29 08:57:32 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 3402:1969 This British Standard, having been approved by th
2、e Sanitary Appliances Industry Standards Committee was published under the authority of the Executive Board on 13th January, 1969 BSI 04-1999 First published, July, 1961 First revision, July, 1964 Second revision, January, 1969 The following BSI references relate to the work on this standard: Commit
3、tee reference SAB/I ISBN 580 00436 8 Co-operating organizations The Sanitary Appliances Industry Standards Committee, under whose supervision this British Standard was prepared, consists of representatives from the following Government departments and scientific and industrial organizations: Associa
4、tion of Public Health Inspectors*Ministry of Public Building and Works* British Bath Manufacturers AssociationMinistry of Public Building and British Ironfounders Association*Works Building Research Station* British Plastics Federation*National Brassfoundry Association* British Waterworks Associatio
5、n*National Federation of Building Trades Council of British Ceramic SanitarywareEmployers Manufacturers*Royal Institute of British Architects* Flushing Cistern Makers Association*Royal institute of Public Health and Hygiene Greater London Council*The Royal Institution of Chartered Surveyors Institut
6、e of Plumbing*Royal Society for the Promotion of Health* Institution of Municipal Engineers*Scottish Federation of Plumbers and Institution of Public Health Engineers*Domestic Engineers (Employers) Metal Sink Manufacturers Association*Associations Ministry of Housing and Local GovernmentWater Compan
7、ies Association The Government departments and scientific and industrial organizations marked with an asterisk in the above list, together with the following, were directly represented on the committee entrusted with the preparation of this British Standard: British Ceramic Research AssociationNatio
8、nal Federation of Builders and British Steel IndustryPlumbers Merchants Department of Health and Social SecurityNational Federation of Plumbers and Good Housekeeping InstituteDomestic Heating Engineers Institute of Housing ManagersStainless Steel Development Association Institute of Vitreous Enamell
9、ersWomens Advisory Committee of BSI Institution of Water EngineersIndividual manufactures Modular Society Amendments issued since publication Amd. No.DateComments 714April 1971 4922May 1989Indicated by a sideline in the margin Licensed Copy: sheffieldun sheffieldun, na, Wed Nov 29 08:57:32 GMT+00:00
10、 2006, Uncontrolled Copy, (c) BSI BS 3402:1969 BSI 04-1999i Contents Page Co-operating organizationsInside front cover Forewordii 1Scope1 2Definitions1 3Application of glazing2 4Tolerances2 5Visual examination2 6Water absorption2 7Crazing2 8Chemical resistance2 9Resistance to staining and burning2 1
11、0Suppliers certificate3 Appendix A Test for water absorption5 Appendix B Test for crazing5 Appendix C Tests for chemical resistance5 Appendix D Tests for resistance to staining and burning5 Figure 1 Viewing circle for WC pans, bidets, wash basins, Pedestals and urinals8 Table 1 Blemishes and defects
12、 permitted in wc pans, bidets, bowl urinals, pedestals and legs3 Table 2 Blemishes and defects permitted in cisterns and covers3 Table 3 Blemishes and defects permitted in wash basins and drinking fountains4 Table 4 Chemical solutions5 Licensed Copy: sheffieldun sheffieldun, na, Wed Nov 29 08:57:32
13、GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 3402:1969 ii BSI 04-1999 Foreword In order to keep abreast of progress in the industries concerned, British Standards are subject to periodical review. Suggestions for improvements will be recorded and in due course brought to the notice of the committee
14、s charged with the revision of the standards to which they refer. A complete list of British Standards, numbering over 6 000, fully indexed and with a note of the contents of each, will be found in the British Standards Yearbook, which may be purchased from BSI Sales Department. It may also be consu
15、lted in many public libraries and similar institutions. This British Standard was first published in 1961 to specify the permissible limits of water absorption and of resistance to crazing for vitreous china, and to establish test methods for assessing these properties. At the request of the sanitar
16、y pottery industry, it was revised in 1964, and enlarged to include additional requirements and test methods. The present revision is for the purpose of implementing the change to the metric system of measures. It is still not possible to include tests for impact strength and abrasion resistance. Th
17、is is because satisfactory tests, giving reproducible results, have not yet been devised; as soon as such tests are available, they will be included in the standard. Requirements to ensure adequate thicknesses of sanitary ware are given on the British Standard for individual appliances. A British St
18、andard does not purport to include all the necessary 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 cove
19、r, an inside front cover, pages i and ii, pages 1 to 8 and a back cover. This standard has been updated (see copyright date) and may have had amendments incorporated. This will be indicated in the amendment table on the inside front cover. Licensed Copy: sheffieldun sheffieldun, na, Wed Nov 29 08:57
20、:32 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 3402:1969 BSI 04-19991 1 Scope This British Standard specifies certain requirements concerning the quality and dimensional tolerances for vitreous china sanitary appliances and details the methods of test by which their properties may be assessed. 2
21、Definitions For the purposes of this British Standard the following definitions apply: 2.1 bubble a raised portion of the surface less than 1 mm maximum diameter 2.2 craze fine cracks in the glaze 2.3 discoloration a coloured spot greater than 6 mm maximum dimension or a concentrated number of speck
22、s or spots to give the effect of a change in colour 2.4 dull finish undeveloped glaze, slightly matt in appearance or a non-glossy finish on a visible surface 2.5 dunt a hair-line fracture extending through the body 2.6 exposed body an unglazed portion not less than 2 mm maximum dimension 2.7 finish
23、 the texture and condition of a surface other than its colour 2.8 fire crack a fine shallow crack in the body not covered with glaze. (Fire cracks, where not on a visible surface, may not necessarily be detrimental) 2.9 flushing surface the surface visible after installation and which becomes wet du
24、ring the operation of the appliance 2.10 grouping a number of spots, blisters, pinholes or specks within any pottery square 2.11 integral a part cast integrally with the appliance 2.12 large blister a raised portion of the surface not less than 3 mm and less than 6 mm maximum dimension 2.13 large sp
25、ot an area of contrasting colour not less than 3 mm and less than 6 mm maximum dimension 2.14 medium blister a raised portion of the surface not less than 1 mm and less than 3 mm maximum dimension 2.15 pinhole a small hole in the glazed surface less than 2 mm maximum dimension 2.16 polishing mark a
26、spot not more than 10 mm maximum dimension where a minor blemish has been ground off and the surface polished 2.17 pottery square a square of side 50 mm, i.e. with an area of 2 500 mm2. 2.18 projection a raised portion of not less than 6 mm maximum dimension on a visible surface 2.19 roughing-in mea
27、surements dimensions from the finished wall or floor to the centre of the waste or supply opening 2.20 speck an area of contrasting colour less than 1 mm maximum dimension. (Specks less than 0.25 mm maximum dimension do not constitute a defect unless sufficient in number to form a discoloration) 2.2
28、1 spot an area of contrasting colour not less than 1 mm and less than 3 mm maximum dimension Licensed Copy: sheffieldun sheffieldun, na, Wed Nov 29 08:57:32 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 3402:1969 2 BSI 04-1999 2.22 visible surface the surface which, after installation of the applian
29、ce, is readily visible to an observer in a normal standing position 2.23 vitreous china a strong high-grade ceramic ware used for sanitary appliances and made from a mixture of white burning clays and finely-ground minerals which, after firing at a high temperature and when tested in accordance with
30、 Appendix A, does not have a mean value of water absorption greater than 0.5 % of the dry weight. It is coated on all exposed surfaces with an impervious non-crazing vitreous glaze giving a white or coloured finish 2.24 water surface the surface of the water left in the WC pan trap after flushing 2.
31、25 wavy finish a defect in the finish having the appearance of numerous runs in the glaze; an irregular or mottled finish 2.26 eggshell finish a uniform semi-matt glaze 3 Application of glazing The glaze shall be thoroughly fused to the body. Subject to the exceptions given in 3.1, 3.2 and 3.3, all
32、exposed surfaces shall be glazed. 3.1 Surfaces coming into contact with walls and floors may be without glazed. 3.2 On wash basins set away from walls, those portions of the rear aprons used for supporting the appliances in kilns; the backs of overflows and the undersides of outlet bosses may be wit
33、hout glaze. 3.3 Appliances may have unglazed portions but the unglazed surfaces shall not be visible when the appliance is installed in the normal manner. 4 Tolerances Except where otherwise specified in this standard the tolerances shall be as follows. 1) on dimensions not less than 75 mm, 2 %; 2)
34、on dimensions less than 75 mm, 5 %; and 3) on the height of the flush outlet of P-traps or horizontal outlets, 5 mm. 5 Visual examination 5.1 WC pans, bidets, bowl urinals and pedestals. When examined from any point on the viewing circle, as illustrated in Figure 1, WC pans, bidets, bowl urinals and
35、 pedestals shall not show, to the unaided eye of a trained observer, blemishes or defects in excess of those listed in Table 1. 5.2 Cisterns and covers. When assembled together and when examined from a distance of 0.60 m, the outer surfaces of a cistern and its cover shall not show, to the unaided e
36、ye of a trained observer, blemishes or defects in excess of those listed in Table 2. 5.3 Wash basins and drinking fountains. When examined from a distance of 0.60 m, the surfaces of wash basins and drinking fountains shall not show, to the unaided eye of a trained observer, blemishes or defects in e
37、xcess of those listed in Table 3. 5.4 Illumination during visual examination. When checking an appliance by visual examination, either in natural of artificial light, the uniform light intensity at the surface of the appliance shall be 300 lx when checked with a light meter. When used, artificial li
38、ghting shall be provided by one or more fluorescent lamps of colour temperature 6 500 K, positioned 2 m minimum above the top of the appliance. The appliance shall be positioned so that it is between the light source and the observer. NOTEInternational effects in the surface are not to be regarded a
39、s defects. 6 Water absorption When tested by the method described in Appendix A, none of the individual values of water absorption shall exceed 0.75 % and the arithmetical mean of the values shall not exceed 0.50 %. 7 Crazing When tested by the method described in Appendix B, none of the test pieces
40、 shall show crazing. 8 Chemical resistance When tested by the method described in Appendix C none of the test pieces shall appear to the unaided eye of a trained observer to have suffered any loss of reflectivity on the glaze when compared with the control sample. 9 Resistance to staining and burnin
41、g When tested by the methods described in Appendix D, no stain shall remain on either of the test pieces. Licensed Copy: sheffieldun sheffieldun, na, Wed Nov 29 08:57:32 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 3402:1969 BSI 04-19993 10 Suppliers certificate The supplier shall, at the request o
42、f the purchaser, give a certificate to the effect that the articles supplied are capable of passing the tests referred to in Clauses 6 to 9 inclusive. Table 1 Blemishes and defects permitted in WC pans, bidets, bowl urinals, and pedestals Table 2 Blemishes and defects permitted in cisterns and cover
43、s LocationBlemish or defectMaximum permitted General Wavy finishNone on all visible surfaces Warpage WC pansNot more than 6 mm Other fixturesNot more than 1 %, total warpage not more than 6 mm DiscolorationNone on all visible surfaces Flushing surface and horizontal face of rims of WC pans bidets an
44、d urinals Spots, blisters and pinholesA total of not over three; no grouping; for coloured appliances, blister and pinhole limited to one each Bubbles and specksNot over two in one pottery square; a total of not over four Polishing marksOne only; none permitted for coloured appliances Visible surfac
45、es other than above Spots, blisters and pinholesA total of not over five; no grouping; for coloured appliances, no blisters are permitted and pinholes are limited to a total of two Bubbles and specksNot over three in one pottery square; a total of not over ten LocationBlemish or defectMaximum permit
46、ted General WarpageNot noticeably warped DiscolorationNone on visible surfaces Visible surface Wavy finish Not more than 2 500 mm2 on ends only; none on cover Spots, blisters and pinholes A total of not over four; no grouping; a total of not over two on covers except that for coloured appliances, bl
47、ister and pinhole limited to one each Bubbles and specksNot over two in one pottery square; total of not over six; a total of not over three on covers Polishing marksOne only; none on cover; none permitted for coloured appliances Licensed Copy: sheffieldun sheffieldun, na, Wed Nov 29 08:57:32 GMT+00
48、:00 2006, Uncontrolled Copy, (c) BSI BS 3402:1969 4 BSI 04-1999 Table 3 Blemishes and defects permitted in wash basins and drinking fountains LocationBlemish or defectMaximum permitted General Wavy finishNone on all visible surfaces WarpageWarpage of slab out of horizontal plane not to exceed 6 mm o
49、n all sizes (warpage of backs of wash basins which are attached to the wall not to exceed 3 mm) DiscolorationNone on all visible surfaces Service space, top of slab, inside of bowl, front of fascia Spots, blisters and pinholes A total of not over two; no grouping; for coloured appliances, no blisters are permitted and pinhole limited to one Bubbles and specksA total of not over four; no grouping Polishing marksOne only; none permitted for coloured fixtures Face of internal back and sides Spots, blisters and pinholes One only on back or on either