BS-8434-2-2003.pdf
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1、BRITISH STANDARD BS 8434-2:2003 Incorporating Amendment No. 1 Methods of test for assessment of the fire integrity of electric cables Part 2: Test for unprotected small cables for use in emergency circuits BS EN 50200 with a 930 C flame and with water spray ICS 13.220.40; 29.060.20 ? Licensed Copy:
2、London South Bank University, London South Bank University, Fri Dec 08 01:13:28 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 8434-2:2003 This British Standard was published under the authority of the Standards Policy and Strategy Committee on 14 August 2003 BSI 18 November 2005 The following BSI re
3、ferences relate to the work on this British Standard: Committee reference GEL/20/18 Draft for comment 02/209892 DC ISBN 0 580 42256 9 Committees responsible for this British Standard The preparation of this British Standard was entrusted by Technical Committee GEL/20, Electric cables, to Subcommitte
4、e GEL/20/18, Fire test methods, upon which the following bodies were represented: BEAMA Installation Ltd. British Approvals Service for Cables British Cables Association British Plastics Federation DTI Consumer Safety Unit Electricity Association ERA Technology Ltd. Institute of Fire Prevention Offi
5、cers MOD UK Defence Standardisation Network Rail Nuclear Industry Fire Safety QinetiQ Amendments issued since publication Amd. No.DateComments 1584718 November 2005See Foreword Licensed Copy: London South Bank University, London South Bank University, Fri Dec 08 01:13:28 GMT+00:00 2006, Uncontrolled
6、 Copy, (c) BSI BS 8434-2:2003 BSI 18 November 2005 i Contents Page Committees responsibleInside front cover Forewordii 1Scope 1 2Normative references 1 3Terms and definitions 1 4Duration of survival 1 5Test environment 1 6Test apparatus 1 7Verification procedure for source of heat 2 8Test sample 2 9
7、Cable test procedure 2 10Test report 3 Bibliography 5 Licensed Copy: London South Bank University, London South Bank University, Fri Dec 08 01:13:28 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 8434-2:2003 ii BSI 18 November 2005 Foreword BS 8434-2 has been prepared by GEL/20, Electric cables, thro
8、ugh its Subcommittee GEL/20/18. UK submitted a Vilamoura Notification (BT(GB/Not)84), and BT has allowed (D116/079) the work to proceed only at UK national level, and without standstill. A number of clauses in this standard are, by numbering and content, identical to the equivalent clause in BS EN 5
9、0200:2000. Such clauses are identified with the words “The provisions of BS EN 50200 shall apply” and are intended to be read as though the relevant wording from that standard was included at that point. !Changes as a result of Amendment 1:2005 are indicated by tags (!“) in the text.“ It has been as
10、sumed in the drafting of this British Standard that the execution of its provisions is entrusted to appropriately qualified staff and experienced people, for whose guidance it has been prepared. This publication does not purport to include all the necessary provisions of a contract. Users are respon
11、sible for its 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 to 5 and a back cover. The BSI copyright notice displayed in this do
12、cument indicates when the document was last issued. Licensed Copy: London South Bank University, London South Bank University, Fri Dec 08 01:13:28 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 8434-2:2003 BSI 18 November 2005 1 1 Scope This British Standard specifies a method of test to be used for
13、small unprotected cables where the requirements of BS EN 50200 are modified to use a flame temperature of 930 0 +40 () C and the application of water spray. Compliance with the requirements of BS 5839-1:2002, 26.2e) may be demonstrated using this method. NOTE 1 UK has been granted derogation from st
14、andstill from CENELEC Procedures in respect of the publication of BS 8434-2:2003. NOTE 2 The method of water spray application is described in BS 8434-1:2003. It is emphasized that the fire tests do not assess a fire hazard, nor can the results of the fire tests alone guarantee safety. They only pro
15、vide information to assist in the assessment of the suitability of a cable for a given application. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the reference cited applies. For undated references, the la
16、test edition of the referenced document (including any amendments). BS 8434-1, Methods of test for assessment of the fire integrity of electric cables Part 1: Test for unprotected small cables for use in emergency circuits BS EN 50200 with addition of water spray. BS EN 50200, Method of test for res
17、istance to fire of unprotected small cables for use in emergency circuits. 3 Terms and definitions The terms and definitions given in BS EN 50200 apply. 4 Duration of survival 4.1 Time !The duration of the test shall be 120 min (60 min for the initial fire and impact phase followed by an additional
18、60 min for the fire, impact and water phase), during which the cable shall not reach the point of failure. Conformity to this requirement shall qualify for a 120 min classification. NOTE 1 The 120 min classification meets the requirement specified in BS 5839-1:2002, 26.2e) (see Clause 1 of the prese
19、nt standard). NOTE 2 Particular product standards or specifications may use the same test protocol, and may contain other durations of test that do not lead to a classification under this standard.“ 4.2 Point of failure The provisions of BS EN 50200 shall apply. 5 Test environment The provisions of
20、BS EN 50200 shall apply. 6 Test apparatus 6.1 Test equipment. In addition to the provisions of BS EN 50200, the test equipment shall include a water spray device as described in 6.6 of BS 8434-1. 6.2 Wall and its mounting, conforming to BS EN 50200. 6.3 Continuity checking arrangement, conforming to
21、 BS EN 50200. Licensed Copy: London South Bank University, London South Bank University, Fri Dec 08 01:13:28 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 8434-2:2003 2 BSI 18 November 2005 6.4 Source of heat, conforming to BS EN 50200 except that: the nominal burner face width shall be 10 mm; the f
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