SANS 53763-4-2008 Explosives for civil uses - Detonators and relays Part 4 Determination of resistance to abrasion of leading wires and shock tubes《民用爆炸品 雷管及导爆替续器 第4部分 引入线及震激管磨损阻力测.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 978-0-626-21412-8 SANS 53763-4:2008Edition 1EN 13763-4:2003Edition 1SOUTH AFRICAN NATIONAL STANDARD Explosives for civil uses Detonators and relays

4、Part 4: Determination of resistance to abrasion of leading wires and shock tubes This national standard is the identical implementation of EN 13763-4:2003 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 groenkl

5、oof 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 53763-4:2008 Edition 1 EN 13763-4:2003 Edition 1 Table of changes Change No. Date Scope National foreword This South African standard was approved by Nationa

6、l 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 13763-4November 2003ICS 71.100.30Engli

7、sh versionExplosives for civil uses - Detonators and relays - Part 4:Determination of resistance to abrasion of leading wires andshock tubesExplosifs usage civil - Dtonateurs et relais - Partie 4:Dtermination de la rsistance labrasion des filsdamorce et des tubes transmission dondes de chocExplosivs

8、toffe fr zivile Zwecke - Znder undVerzgerungselemente - Teil 4: Bestimmung derWiderstandsfhigkeit von Znderdrhten undZndschluchen gegenber AbriebThis European Standard was approved by CEN on 1 September 2003.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate th

9、e 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 exists in thre

10、e 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 Austria,

11、 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 KOMITEE FR NO

12、RMUNGManagement 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 13763-4:2003 ESANS 53763-4:2008This s tandard may only be used and printed by approved subscription and freemailing clie

13、nts of the SABS .EN 13763-4:2003 (E)2ContentspageForeword3Introduction .51 Scope 52 Normative references 53 Terms and definitions54 Principle55 Apparatus .56 Test pieces97 Procedure .98 Test report 11Annex A (informative) Range of applicability of the test method12Annex B (normative) Specification o

14、f grinding steel13Annex C (informative) Availability of abrasive strips .15Annex ZA (informative) Clauses of this European Standard addressing essential requirements orother provisions of EU Directives 16SANS 53763-4:2008This s tandard may only be used and printed by approved subscription and freema

15、iling clients of the SABS .EN 13763-4:2003 (E)3ForewordThis document (EN 13763-4:2003) has been prepared by Technical 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 publicat

16、ion of an identical text orby endorsement, at the latest by May 2004, and conflicting national standards shall be 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

17、requirements of EU Directive(s).For the relationship with EU Directive(s), see informative annex ZA, which is an integral part of this document.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

18、 are listed below:prEN 13763-1 Part 1: Requirements.EN 13763-2 Part 2: Determination of thermal stability.EN 13763-3 Part 3: Determination of sensitiveness to impact.EN 13763-5 Part 5: Determination of resistance to cutting damage of leading wires and shock tubes.EN 13763-6 Part 6: Determination of

19、resistance to cracking at low temperatures of leading wires.EN 13763-7 Part 7: Determination of the mechanical strength of leading wires, shock tubes, connections,crimps and closures.EN 13763-8 Part 8: Determination of resistance to vibration of plain detonators.EN 13763-9 Part 9: Determination of r

20、esistance to bending of detonators.EN 13763-11 Part 11: Determination of resistance to damage by dropping of detonators and relays .EN 13763-12 Part 12: Determination of resistance to hydrostatic pressure.prEN 13763-13 Part 13: Determination of resistance of electric detonators against electrostatic

21、 discharge.prEN 13763-15 Part 15: Determination of equivalent initiating capability.prEN 13763-16 Part 16: Determination of delay accuracy.prEN 13763-17 Part 17: Determination of no-fire current of electric detonators.prEN 13763-18 Part 18: Determination of series firing current of electric detonato

22、rs.prEN 13763-19 Part 19: Determination of firing impulse of electric detonators.EN 13763-20 Part 20: Determination of total electrical resistance of electric detonators.prEN 13763-21 Part 21: Determination of flash-over voltage of electric detonators.SANS 53763-4:2008This s tandard may only be used

23、 and printed by approved subscription and freemailing clients of the SABS .EN 13763-4:2003 (E)4prEN 13763-22 Part 22: Determination of capacitance, insulation resistance and insulation breakdown of leadingwires.EN 13763-23 Part 23: Determination of the shock-wave velocity of shock tube.EN 13763-24 P

24、art 24: Determination of the electrical non-conductivity of shock tubes.prEN 13763-25 Part 25: Determination of transfer capability of surface connectors and coupling accessories.prEN 13763-26 Part 26: Definitions, methods and requirements for devices and accessories for reliable and safefunction of

25、 detonators and relays.CEN/TS 13763-27 Part 27: Definitions, methods and requirements for electronic initiation system.The annexes A and C are informative, annex B is normative.According to the CEN/CENELEC Internal Regulations, the national standards organizations of the followingcountries are bound

26、 to implement this European Standard: Austria, Belgium, Czech Republic, Denmark, Finland,France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal,Slovakia, Spain, Sweden, Switzerland and the United Kingdom.SANS 53763-4:2008This s tandard may only be

27、 used and printed by approved subscription and freemailing clients of the SABS .EN 13763-4:2003 (E)5IntroductionDuring usage on site, the insulation on the leading wires of electric detonators and the plastics tubing of shock tubenon-electric detonators can be subjected to many forces, including abr

28、asive forces when drawn over roughsurfaces and/or cutting forces when drawn over a sharp edge. In the former, the plastics material is worn awaygradually by abrasion. In the latter, the sharp edge cuts directly into the material. This standard deals with theformer case by determining the ability of

29、leading wire insulation/shock tube to resist the abrasive forces likely to beexperienced in normal use.1 ScopeThis European Standard specifies a method for determining the resistance to abrasion of plastics used asinsulating material for leading wires of electric detonators, or used as base material

30、 for the tubing of shock tubenon-electric detonators.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. Ford

31、ated references, subsequent 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

32、 for civil uses - Part-1 Terminology.EN ISO/IEC 17025, General requirements for the competence of testing and calibration laboratories (ISO17025:1999).3 Terms and definitionsFor the purposes of this European Standard, the terms and definitions given in EN 13857-1:2003 apply.4 PrincipleThe test piece

33、 is subjected to abrasion by an abrasive surface, moving at a specified speed, while a specified loadis applied. For leading wires the time taken for the insulation to be penetrated is determined. For shock tubes thefunctioning of the shock tube after immersion in water is tested.5 Apparatus5.1 Abra

34、sion test apparatus, as shown in Figure 1, comprising the following main components.SANS 53763-4:2008This s tandard may only be used and printed by approved subscription and freemailing clients of the SABS .EN 13763-4:2003 (E)6Dimensions in millimetresKey1Pivot2 Hinged arm3 Leading wire/shock tube4

35、Weight5Puley6Rod7 Weight8 Clamp screw for attaching the test piece9 Clamp for attaching the test piece10 RotorNOTE The weight on the rod to the right of the pulley (diameter 70 mm 1 mm) may hang down the right side of thepulley.Figure 1 Abrasion test apparatus with rotor in starting position5.1.1 St

36、eel or brass rotor, as shown in Figure 2, with a perimeter of (453 2) mm to which three abrasive strips(see 5.1.2) are attached by means of glue or double-sided adhesive tape. It shall be ensured that electrical contactbetween the abrasive strips and the rotor is made, e.g. at the slits on the rotor

37、 where the ends of the abrasive stripsare inserted (see Figure 2). The rotor shall rotate at a speed of (9,96 0,18) rpm, producing a mean peripheralspeed of (0,075 0,001) m/s.NOTE Depending on attachment principle (glue or tape) of the abrasive strip to the rotor, the abrasive strip may have to bebe

38、nt carefully using a suitable tool in order to fit properly against the surface of the rotor.SANS 53763-4:2008This s tandard may only be used and printed by approved subscription and freemailing clients of the SABS .EN 13763-4:2003 (E)7Dimensions in millimetresKey1 Slit for the end of the abrasive s

39、trip2 Abrasive stripFigure 2 Rotor5.1.2 Abrasive strips, three pieces approximately 10 mm G01 145 mm each, made of grinding steel as specified inannex B.5.1.3 Load, to be applied to the test piece through the hinged arm (see 5.1.4).5.1.4 Hinged arm, made of steel or brass as shown in Figure 3. In th

40、e starting position, the hinged arm shallapply a load of (8,35 0,05) N to the test piece.5.1.5 Pulley, diameter (70 1) mm, for applying a tensile load of (8,1 0,5) N to the test piece, by means of arod and a weight.5.1.6 Motor, capable of maintaining a constant speed of rotation whatever load is app

41、lied to the rotor.NOTE 1 A DC motor with an output power of at least 500 W and with a separate speed control can be used.The rotor shall reach its specified speed of rotation 0,6 s after starting.NOTE 2 This requirement can be verified by two electrodes about 20 mm apart, each adjusted to give elect

42、rical contact tothe tips of the rotor during rotation. The electrodes are connected to a digital counter, counting elapsed time between the pulsesfrom the two electrodes when they are touching the tips of the rotor. Comparison is made between the elapsed time during acontinuous run at the specified

43、speed and the elapsed time 0,6 s after start. First the rotor is rotated manually to an appropriateposition in order for a tip of the rotor to reach the second electrode after 0,6 s.The electrodes can also be used for calibrating the specified speed of rotation, e.g. by measuring the time for one re

44、volution. Inthis case only one electrode is required.SANS 53763-4:2008This s tandard may only be used and printed by approved subscription and freemailing clients of the SABS .EN 13763-4:2003 (E)85.1.7 Digital timer with relay output, capable of:- being set to a predetermined time in the range of (0

45、 to 10) s 0,1 s;- being started (triggered) when the hinged arm is lifted by the test piece;- automatically stopping the rotor when the predetermined time has elapsed (only required for shock tubetesting);- automatically stopping the rotor when electrical contact is made between the leading wire and

46、 the abrasivestrip or the rotor (only required for leading wire testing).Dimensions in millimetresFigure 3 Hinged arm5.2 Immersion test apparatus, as shown in Figure 4, comprising the following components.5.2.1 Cylindrical bending rig, capable of bending and maintaining the test pieces of shock tube

47、 in a ”U” formwith a bending radius of (1,6 0,1) times the diameter of the shock tube.5.2.2 Tank of water, deep enough to allow the abraded surface of shock tube to be immersed to (0,50 0,05) m.SANS 53763-4:2008This s tandard may only be used and printed by approved subscription and freemailing clie

48、nts of the SABS .EN 13763-4:2003 (E)9Dimensions in metresKey1 Shock tube2Water3 Cylindrical bending rig4 Rod with a diameter equal to the diameter of the shock tube (G01s)5 Abraded surface of shock tube on the outer radiusFigure 4 Water tank and bending rig5.3 Conditioning chamber, capable of mainta

49、ining the highest temperature 2 G02C claimed by themanufacturer.6 Test pieces6.1 Leading wiresSelect 10 lengths of leading wire, each at least 0,7 m long, from 10 detonators having the same leading wireconstruction, composition and dimensions. The test pieces can be selected from detonators, from which the piecesare cut, or from wires of the same specification supplied by the manufacturer of the detonator.6.2 Shock tubesSelect 10 lengths of shock tube, each (3,0 G03 0,5) m long, from 10 detonators having the same shock tubec