SANS 53763-6-2008 Explosives for civil uses - Detonators and relays Part 6 Determination of resistance to cracking in low temperatures of leading wires《民用爆炸品 雷管及导爆替续器 第6部分 引导线低温开裂阻.pdf

1、 Collection of SANS standards in electronic format (PDF) 1. Copyright This standard is available to staff members of companies that have subscribed to the complete collection of SANS standards in accordance with a formal copyright agreement. This document may reside on a CENTRAL FILE SERVER or INTRA

2、NET SYSTEM only. Unless specific permission has been granted, this document MAY NOT be sent or given to staff members from other companies or organizations. Doing so would constitute a VIOLATION of SABS copyright rules. 2. Indemnity The South African Bureau of Standards accepts no liability for any

3、damage whatsoever than may result from the use of this material or the information contain therein, irrespective of the cause and quantum thereof. ISBN 978-0-626-21725-9 SANS 53763-6:2008Edition 1EN 13763-6:2003Edition 1SOUTH AFRICAN NATIONAL STANDARD Explosives for civil uses Detonators and relays

4、Part 6: Determination of resistance to cracking in low temperatures of leading wires This national standard is the identical implementation of EN 13763-6:2003 and is adopted with the permission of the CEN, rue de Stassart 36, B-1050 Brussels. Published by Standards South Africa 1 dr lategan road gro

5、enkloof private bag x191 pretoria 0001 tel: 012 428 7911 fax: 012 344 1568 international code + 27 12 www.stansa.co.za Standards South Africa SANS 53763-6:2008 Edition 1 EN 13763-6:2003 Edition 1 Table of changes Change No. Date Scope National foreword This South African standard was approved by Nat

6、ional Committee StanSA TC 5140.04, Explosives and detonators, in accordance with procedures of Standards South Africa, in compliance with annex 3 of the WTO/TBT agreement. This document was published in August 2008. EUROPEAN STANDARDNORME EUROPENNEEUROPISCHE NORMEN 13763-6November 2003ICS 71.100.30E

7、nglish versionExplosives for civil uses - Detonators and relays - Part 6:Determination of resistance to cracking in low temperatures ofleading wiresExplosifs usage civil - Dtonateurs et relais - Partie 6:Dtermination de la rsistance la fissuration des filsdamorces basse tempratureExplosivstoffe fr z

8、ivile Zwecke - Znder undVerzgerungselemente - Teil 6: Bestimmung desWiderstandes der Isolation von Znderdrhten gegenRissbildung bei niedrigen TemperaturenThis European Standard was approved by CEN on 1 September 2003.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which sti

9、pulate the conditions for giving this EuropeanStandard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such nationalstandards may be obtained on application to the Management Centre or to any CEN member.This European Standard exist

10、s in three official versions (English, French, German). A version in any other language made by translationunder the responsibility of a CEN member into its own language and notified to the Management Centre has the same status as the officialversions.CEN members are the national standards bodies of

11、 Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece,Hungary, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Slovakia, Spain, Sweden, Switzerland and UnitedKingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMIT EUROPEN DE NORMALISATIONEUROPISCHES KOMI

12、TEE FR NORMUNGManagement Centre: rue de Stassart, 36 B-1050 Brussels 2003 CEN All rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 13763-6:2003 ESANS 53763-6:2008This s tandard may only be used and printed by approved subscription and freemai

13、ling clients of the SABS .EN 13763-6:2003 (E)2Contents pageForeword3Introduction .51 Scope 52 Normative references 53 Terms and definitions54 Test pieces55 Apparatus .66 Procedure .67 Test report 7Annex A (informative) Range of applicability of the test method.8Annex ZA (informative) Clauses of this

14、 European Standard addressing essential requirements or otherprovisions of EU Directives. .9SANS 53763-6:2008This s tandard may only be used and printed by approved subscription and freemailing clients of the SABS .EN 13763-6:2003 (E)3ForewordThis document (EN 13763-6:2003) has been prepared by Tech

15、nical Committee CEN/TC 321 “Explosives for civiluses“, the secretariat of which is held by AENOR.This European Standard shall be given the status of a national standard, either by publication of an identical text orby endorsement, at the latest by May 2004, and conflicting national standards shall b

16、e withdrawn at the latest byMay 2004.This document has been prepared under a mandate given to CEN by the European Commission and the EuropeanFree Trade Association, and supports essential requirements of EU Directive(s).For the relationship with EU Directive(s), see informative annex ZA, which is an

17、 integral part of this standard.This European Standard is one of a series of standards with the generic title Explosives for civil uses Detonatorsand relays. The other parts of this series are listed below:prEN 13763-1 Part 1: RequirementsEN 13763-2 Part 2: Determination of thermal stabilityEN 13763

18、-3 Part 3: Determination of sensitiveness to impactEN 13763-4 Part 4: Determination of resistance to abrasion of leading wires and shock tubesEN 13763-5 Part 5: Determination of resistance to cutting damage of leading wires and shock tubesEN 13763-7 Part 7: Determination of the mechanical strength o

19、f leading wires, shock tubes, connections,crimps and closuresEN 13763-8 Part 8: Determination of resistance to vibration of plain detonatorsEN 13763-9 Part 9: Determination of resistance to bending of detonatorsEN 13763-11 Part 11: Determination of resistance to damage by dropping of detonators and

20、relaysEN 13763-12 Part 12: Determination of resistance to hydrostatic pressureprEN 13763-13 Part 13: Determination of resistance of electric detonators against electrostatic dischargeprEN 13763-15 Part 15: Determination of equivalent initiating capabilityprEN 13763-16 Part 16: Determination of delay

21、 accuracyprEN 13763-17 Part 17: Determination of no-fire current of electric detonatorsprEN 13763-18 Part 18: Determination of series firing current of electric detonatorsprEN 13763-19 Part 19: Determination of firing impulse of electric detonatorsEN 13763-20 Part 20: Determination of total electric

22、al resistance of electric detonatorsprEN 13763-21 Part 21: Determination of flash-over voltage of electric detonatorsprEN 13763-22 Part 22: Determination of capacitance, insulation resistance and insulation breakdown of leadingwiresSANS 53763-6:2008This s tandard may only be used and printed by appr

23、oved subscription and freemailing clients of the SABS .EN 13763-6:2003 (E)4EN 13763-23 Part 23: Determination of the shockwave velocity of shock tubesEN 13763-24 Part 24: Determination of the electrical non-conductivity of shock tubesprEN 13763-25 Part 25: Determination of transfer capability of sur

24、face connectors and coupling accessoriesprEN 13763-26 Part 26: Definitions, methods and requirements for devices and accessories for reliable and safefunction of detonators and relays.CEN/TS 13763-27 Part 27: Definitions, methods and requirements for electronic initiation systemsAnnex A is informati

25、ve.According to the CEN/CENELEC Internal Regulations, the national standards organizations of the followingcountries are bound to implement this European Standard: Austria, Belgium, Czech Republic, Denmark, Finland,France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Luxembourg, Malta, Netherl

26、ands, Norway, Portugal,Slovakia, Spain, Sweden, Switzerland and the United Kingdom.SANS 53763-6:2008This s tandard may only be used and printed by approved subscription and freemailing clients of the SABS .EN 13763-6:2003 (E)5IntroductionDuring usage on site, leading wires of electric detonators can

27、 experience conditions which can produce cracking ofthe insulation, for instance when kinks or loops on insulated leading wires are subjected to a sudden traction undercold conditions. Plastics materials generally become more brittle as temperature decreases. This standard dealswith the ability of l

28、eading wire insulation to resist the conditions likely to be experienced in normal use.1 ScopeThis European Standard specifies a method for determining the resistance to cracking at low temperatures ofleading wire insulation of detonators. This method is only applicable to electric detonators with p

29、lastic coveredleading wires.2 Normative referencesThis European Standard incorporates by dated or undated reference, provisions from other publications. Thesenormative references are cited at the appropriate places in the text, and the publications are listed hereafter. Fordated references, subseque

30、nt amendments to or revisions of any of these publications apply to this EuropeanStandard only when incorporated in it by amendment or revision. For undated references the latest edition of thepublication referred to applies (including amendments).EN 13857-1:2003; Explosives for civil uses Part 1: T

31、erminology.EN ISO/IEC 17025; General requirements for the competence of testing and calibration laboratories (ISO/IEC17025:1999).3 Terms and definitionsFor the purposes of this European Standard, the terms and definitions given in EN 13857-1:2003 apply.4 Test piecesSelect 20 pieces of wire, length (

32、500 50) mm, of each type, composition and dimension of leading wire. The testpieces can be selected from detonators, from which the pieces are cut, or from wires supplied by the manufacturer.SANS 53763-6:2008This s tandard may only be used and printed by approved subscription and freemailing clients

33、 of the SABS .EN 13763-6:2003 (E)65 Apparatus5.1 Temperature-controlled chamber, capable of maintaining a specified temperature to 2 G01C, deep enoughto allow the wire to be fully extended.5.2 Rigid frame, for fixing the wires.5.3 Mass of (500 10) g.5.4 Release system, for the weight (for example el

34、ectro-magnetically operated).6 ProcedureMark a length of (300 10) mm on the test piece about 100 mm from the ends of the test piece. Make three kinksin the test piece, each with an inner diameter between one and two times the outer diameter of the insulated wire:one in the middle of the marked lengt

35、h (150 + 10) mm from the marked points and the others 50 mm to 60 mmfrom the kink in the middle of the test piece, as shown in Figure 1 and Figure 2. If the detonator leading wires arethe twin extruded type, both wires shall be tested together.Key1 Frame2 Attachment to frame3 Release system4 Weight5

36、 Leading wire6 KinksFigure 1 Schematic diagram of testing arrangementSANS 53763-6:2008This s tandard may only be used and printed by approved subscription and freemailing clients of the SABS .EN 13763-6:2003 (E)7Key1 Leading wire2 Inner diameter of the kinkFigure 2 Detail of a kinkMake a 300 mm loop

37、 by fixing one marked end of the test piece to the frame and the other end to the weight.Condition the test pieces for and least 1 h at a temperature not greater than the lowest temperature claimed by themanufacturer. Maintain this temperature within + 2 G01C for the duration of the test.Release the

38、 weight and allow it to fall freely.Determine whether any through cracking of the insulation has occurred by visual examination.7 Test reportThe test report shall conform to EN ISO/IEC 17025. In addition the following information shall be given:a) the number of test pieces with cracks;b) the tempera

39、ture during testing.SANS 53763-6:2008This s tandard may only be used and printed by approved subscription and freemailing clients of the SABS .EN 13763-6:2003 (E)8Annex A(informative)Range of applicability of the test methodRange of applicability of the test method: applicable down to - 30 G01C.SANS

40、 53763-6:2008This s tandard may only be used and printed by approved subscription and freemailing clients of the SABS .EN 13763-6:2003 (E)9Annex ZA(informative)Clauses of this European Standard addressing essential requirements orother provisions of EU Directives.This European standard has been prep

41、ared under a mandate given to CEN by the European Commission and theEuropean Free Trade Association and supports essential requirements of EU Directive 93/15/EEC.WARNING : Other requirements and other EU Directives may be applicable to the product(s) falling within thescope of this standard.The clau

42、ses of this standard are likely to support requirements I.1, I.2, II.1.(g), II.1.(j) and II.2.C.(f) of Directive93/15/EEC.Compliance with this standard provides one means of conforming with the specific essential requirements of theDirective concerned and associated EFTA regulations.SANS 53763-6:2008This s tandard may only be used and printed by approved subscription and freemailing clients of the SABS .