1、STD.BS1 BS EN LSIIS-ENGL 1799 Lb24bb9 0784342 b79 BRITISH STANDARD Plastics piping systems - Unplasticized poly( vinyl chloride) (PVC-U) pipes, fittings and material - Method for assessment of the PVC content based on total chlorine content The European Standard EN 19051998 has the status of a Briti
2、sh Standard ICs 23.040.20; 23.040.45; 83.140.30 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGm LAW BS EN 1905: 1999 BS 2782-11: Method 1105C: 1999 STD-BSI BS EN LSO5-ENGL 1797 Lb24bbS 070iLi3 505 BS EN 1905:1999 direction of the Sector Amd. No. Date Committee for Materiais and Che
3、micals, was published under the authority of the Standards Committee and comes into effect on 15 July 1999 O BSI 07-1999 National foreword Comments This British Standard is the English language version of EN 1905:1998. The UK participation in its preparation was entrusted to Technical Committee PRY6
4、1, Piastics piping systems and components, which has the responsibility to: - aid enquirers to understand the text; - present to the responsible European committee any enquiries on the - monitor related international and European developments and promulgate interpretation, or proposals for change, a
5、nd keep the UK interests informed them in the UK. A list of organizations represented on this committee can be obtained on request to its secrem. This European Standard is also incorporated into BS 2782-1 1 Methods of testing plastics - Part 11: Thmmplastics pipes, fittings und valves, as Method 110
6、5C:1999, for association with related test methods for piastics materials and plastics piping systems. It may be used for the revision or amendment of other national standards, but it should not be presumed to apply to any existing standard or specification which contains or makes reference to a dif
7、ferent test method until thai standadspecication has been amended or revised to make reference to this method and dust any requirements as appropriate. Cross-references The British Standards which implement international or European publications referred to in this document may be found in the BSI S
8、tandards Catalogue under the section entitied “International Stanhds Correspondence Index”, or by using the “Find” facility of the BSI Standards Electronic Catalogue. WARNING This British Standard, which is identical with EN 19051998, does not necessarily detail all the precautions necessary to meet
9、 the requirements of the Health and Safety at Work etc. Act 1974. Attention should be paid to any appropriate safety precautions and the method should be performed oniy by trained personnel. A British Standard does not purport to include all the necessary provisions of a con-at. Users of British Sta
10、ndards 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, the EN titie page, pages 2 to 4, an inside back cover and a back cover. I
11、SBN O 680 32471 O I I STD-BSI BS EN L905-ENGL 1779 9 LbZL-lbbS 0784344 4lrL EUROPEAN SmNDAFtD EN 1905 NORME EUR0PEE”E EUROP mf is the filler content. NOTE 1 It is assumed that the combined amount of additives incorporated (e.g. pigments, stabilizers and lubricants) is at least 2 % by mass. If M 97 %
12、, conljnue in accordance with 6.4.2. if M 5 97 %, caiculate the PVC content m, in percentage by mass, using the following equation: NOTE 2 In this case, WCC or PVGCIABS blends may be present. These blends are considered not to have a detrimental effect on WC produds and therefore are counted as PVC-
13、U. 5.4.2 If M 97 %, the materiai may contab one or more of the foliowing: =100-(+2) - PE-C in iarge quantities; - other (chlorhefiee) polymeis; - additives in excess of 2 % by mass. In such cases, determine by ini-a-red or X-ray analysis whether chlorine-fi-ee polymers or additives are present and p
14、roceed in accordance with a) or b), as applicable. The infrared or X-ray analysis equipment shall be calibrated in accordance with the manufacturers instructions before testing. O BSI 07-1999 Page 4 Em 1m1998 a) If not more than 2 % by mass of additives and no additional polymers other than PEC are
15、present, calcula b) a full identification of the material under test; c) a description of the sampling procedure used; d) identification of the analytical methods used; e) list of the measured and calculated values in percentage by mass; f) any factors which may have affected the results, such as an
16、y incidents or any operating detajls not specified in this standard; g) the date of the test. b) If additives in excess of 2 % or other polymers are found, take the PVC content to be equal to the apparent PVC content (see 6.2). O BSI 07-1999 STD-BSI BS EN 1905-ENGL 1999 I Lb29bbS 079148 097 = BS EN
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