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1、BRITISH STANDARD BS EN 13631-4:2002 Explosives for civil uses High explosives Part 4: Determination of sensitiveness to impact of explosives The European Standard EN 13631-4:2002 has the status of a British Standard ICS 71.100.30 ? Licensed Copy: sheffieldun sheffieldun, na, Mon Oct 30 02:17:24 GMT+
2、00:00 2006, Uncontrolled Copy, (c) BSI BS EN 13631-4:2002 This British Standard was published under the authority of the Standards Policy and Strategy Committee on 6 June 2003 BSI 6 June 2003 ISBN 0 580 42007 8 National foreword This British Standard is the official English language version of EN 13
3、631-4:2002. The UK participation in its preparation was entrusted to Technical Committee CII/61, Explosives for civil uses, which has the responsibility to: A list of organizations represented on this committee can be obtained on request to its secretary. Cross-references The British Standards which
4、 implement international or European publications referred to in this document may be found in the BSI Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Search” facility of the BSI Electronic Catalogue or of British Standards Online. This publicati
5、on does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. aid enquirers to understand the text; present to the responsible international/E
6、uropean committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; monitor related international and European developments and promulgate them in the UK. Summary of pages This document comprises a front cover, an inside front cover, the EN title page,
7、 pages 2 to 11 and a back cover. The BSI copyright date displayed in this document indicates when the document was last issued. Amendments issued since publication Amd. No. DateComments Licensed Copy: sheffieldun sheffieldun, na, Mon Oct 30 02:17:24 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EUROPEA
8、N STANDARD NORME EUROPENNE EUROPISCHE NORM EN 13631-4 September 2002 ICS 71.100.30 English version Explosives for civil uses - High explosives - Part 4: Determination of sensitiveness to impact of explosives Explosifs usage civil - Explosifs - Partie 4: Dtermination de la sensibilit limpact des expl
9、osifs Explosivstoffe fr zivile Zwecke - Sprengstoffe - Teil 4: Bestimmung der Schagempfindlichkeit von Explosivstoffen This European Standard was approved by CEN on 11 July 2002. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this
10、European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the Management Centre or to any CEN member. This European Standard exists in three official versions (Engli
11、sh, French, German). A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Czech Republi
12、c, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: rue de Stass
13、art, 36 B-1050 Brussels 2002 CENAll rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 13631-4:2002 E Licensed Copy: sheffieldun sheffieldun, na, Mon Oct 30 02:17:24 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 13631-4:2002 (E) 2 Contents pa
14、ge Foreword3 1Scope 4 2Normative references 4 3Terms and definitions4 4Principle4 5Apparatus .5 6Test pieces7 7Procedure .8 8Test report 9 Annex A (informative) Range of applicability of the test method.10 Annex ZA (informative) Clauses of this European Standard addressing essential requirements or
15、other provisions of EU Directives11 Licensed Copy: sheffieldun sheffieldun, na, Mon Oct 30 02:17:24 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 13631-4:2002 (E) 3 Foreword This document (EN 13631-4:2002) has been prepared by Technical Committee CEN/TC 321 “Explosives for civil uses“, the secretari
16、at 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 or by endorsement, at the latest by March 2003, and conflicting national standards shall be withdrawn at the latest by March 2003. This document has been
17、prepared under a mandate given to CEN by the European Commission and the European Free Trade Association, and supports essential requirements of EU Directive(s). For relationship with EU Directive(s), see informative annex ZA, which is an integral part of this document. This European Standard is one
18、 of a series of standards on Explosives for civil uses - High explosives . The other parts of this series are: prEN 13631-1Part 1: Requirements. EN 13631-2Part 2: Determination of thermal stability of explosives. prEN 13631-3Part 3: Determination of sensitiveness to friction of explosives. EN 13631-
19、5Part 5: Determination of resistance to water. EN 13631-6Part 6: Determination of resistance to hydrostatic pressure. prEN 13631-7Part 7: Determination of safety and reliability at extreme temperatures. prEN 13631-10Part 10: Method for the verification of the means of initiation. prEN 13631-11Part 1
20、1: Determination of transmission of detonation. prEN 13631-12Part 12: Determination of the initiating capability of boosters. prEN 13631-13Part 13: Method for the determination of density. prEN 13631-14Part 14: Method for the determination of velocity of detonation. prEN 13631-15Part 15: Calculation
21、 of thermodynamic properties. prEN 13631-16Part 16: Detection and measurement of toxic gases. Annex A of this document is informative. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Aus
22、tria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and the United Kingdom. Licensed Copy: sheffieldun sheffieldun, na, Mon Oct 30 02:17:24 GMT+00:00 2006, Uncontrolled Copy, (
23、c) BSI EN 13631-4:2002 (E) 4 1 Scope This European Standard specifies a method for determining the sensitiveness to impact of explosives. 2 Normative references This European Standard incorporates by dated or undated reference, provisions from other publications. These normative references are cited
24、 at the appropriate places in the text, and the publications are listed hereafter. For dated references, subsequent amendments to or revisions of any of these publications apply to this European Standard only when incorporated in it by amendment or revision. For undated references the latest edition
25、 of the publication referred to applies (including amendments). prEN 13857-1:2001, Explosives for civil uses Part 1: Terminology. EN ISO 683-17:1999, Heat-treated steels, alloy steels and free-cutting steels Part 17: Ball and roller bearing steels (ISO 683-17:1999). EN ISO 4957, Tool steels (ISO 495
26、7:1999). EN ISO/IEC 17025, General requirements for the competence of testing and calibration laboratories (ISO/IEC 17025:1999). 3 Terms and definitions For the purposes of this European Standard, the following terms and definitions apply in addition to those given in prEN 13857-1:2001: 3.1 reaction
27、 occurrence of report or flame 3.2 drop height distance between the uppermost part of the impact device and the lower face of the striking head immediately before the drop 3.3 impact energy energy of the drop weight immediately before impact, calculated by multiplying the mass of the drop weight by
28、the drop height and by the acceleration due to gravity NOTEFor practical purposes, the acceleration due to gravity is rounded to 10 m/s so that, for example, with a drop weight of mass 1 kg and a drop height of 500 mm the impact energy is assumed to be 5 J. 3.4 sensitiveness to impact lowest impact
29、energy at which a reaction is obtained from at least one out of six tests 4Principle A weight of known mass is dropped onto a sample of the explosive which is confined in a way that during the impact of the weight no significant friction is applied to the explosive. Licensed Copy: sheffieldun sheffi
30、eldun, na, Mon Oct 30 02:17:24 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 13631-4:2002 (E) 5 5Apparatus 5.1 Drop Hammer, (see Figure 1) consisting of a cast steel block with base, an anvil, a column, guides, drop weights with release device, and an impact device. The column is made from a seamles
31、s drawn steel tube. The support into which the column is fixed is bolted to the back of the steel block. The dimensions of the anvil (see 5.2) and the intermediate anvil are given in Figure 2, which shows the arrangement of the lower parts. The two guides which are fixed to the column by means of th
32、ree cross-pieces are fitted with a toothed rack to limit the re-bound of the drop weight (see 5.3) and a moveable graduated scale for adjusting the drop height. NOTE An example of drop hammer is the BAM fall-hammer. Dimensions in millimetres Key 1 Guides 2 Release device 3 Drop weight 4 Anvil 5 Colu
33、mn 6 Steel block Key 1 Impact device 2 Locating ring 3 Locating plate 4 Intermediate anvil 5 Anvil 6 Steel block Figure 1 General arrangement of the BAM fall-hammer(scheme of BAM1 apparatus) Figure 2 Lower part of the BAM fall-hammer The drop height shall be accurate to within 0,5 cm. The drop weigh
34、t release mechanism is adjustable between the guides and is clamped to them by the operation of a lever nut on two jaws. The apparatus shall be firmly 1 BAM: Bundesanstalt fr Materialforschung und -prfung. Licensed Copy: sheffieldun sheffieldun, na, Mon Oct 30 02:17:24 GMT+00:00 2006, Uncontrolled C
35、opy, (c) BSI EN 13631-4:2002 (E) 6 secured to a concrete block, with minimum dimensions of 0,6 m 0,6 m 0,6 m, by means of four anchoring bolts. The guides shall be vertical. A wooden protective box with inner protective lining and a window for observation surrounds the apparatus up to the level of t
36、he bottom crossbar. 5.2 Steel anvil, screwed onto the steel block and cast base. The steel used for the anvil is of type 90 MnCrV 8 (EN ISO 4957, HRC hardness of 60). 5.3 Three drop weights of mass 1 kg, 5 kg and 10 kg. Each drop weight is provided with two locating grooves to hold it between the gu
37、ides as it drops. A suspension spigot, a removable cylindrical striking head and a rebound catch are screwed onto the drop weight. The striking head is made from hardened steel of the same type as the anvil (see 5.2) with a minimum diameter of 25 mm. It has a shoulder to prevent it from being forced
38、 into the drop weight by the impact. The drop weights are used in conjunction with particular drop heights to produce the impact energies as given in Table 1. The mass of each drop weight shall be within 0,1% of its specified mass. Table 1 - Combinations of drop height, mass of drop weight and the r
39、esulting impact energies Drop height cm Mass of drop weight kg Impact energy J 1011 2012 3013 4014 5015 1557,5 20510 30515 40520 50525 60530 351035 401040 501050 5.4 Impact device, consisting of two coaxial steel cylinders, one above the other in a hollow cylindrical steel guide ring. The cylinders
40、are steel rollers from roller bearings with polished surfaces and rounded edges. Both the ring and the steel rollers are made of steel 100Cr6 as specified in EN ISO 683-17:1997 (HRC-Hardness 58 to 65). The dimensions of the cylinders and the ring are given in Figure 3. The impact device is placed on
41、 an intermediate anvil and centred by a locating ring with a ring of vent-holes to permit the escape of gases. Licensed Copy: sheffieldun sheffieldun, na, Mon Oct 30 02:17:24 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 13631-4:2002 (E) 7 Key 1 Steel cylinders 2 Guide collar 3 Locating ring Dimensi
42、ons in millimetres Figure 3 Parts of the impact device and their dimensions 6Test pieces 6.1 Solid substances which are easily broken up or in powdered form Granular substances shall be passed through a sieve with an aperture size of 0,5 mm. The fraction which passes through the sieve shall be used
43、for the test. Substances which have been compressed, cast or otherwise consolidated shall be broken into small pieces and sieved. The fraction which passes through a 1 mm sieve and is retained on a 0,5 mm sieve is used for the test. For substances which contain more than one constituent, the sieve f
44、raction used for the test shall be representative of the original sample. A sample of the substance prepared as described above shall be taken with a cylindrical measure of 40 mm3 capacity (3,7 mm diameter by 3,7 mm length) for each test. 6.2 Plastic bonded substances and other solids which are not
45、easily broken up These substances shall be tested in the form of discs of about 4 mm in diameter and about 3 mm in thickness (volume 40 mm). Licensed Copy: sheffieldun sheffieldun, na, Mon Oct 30 02:17:24 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 13631-4:2002 (E) 8 6.3 Paste-like and gel-type su
46、bstances For these substances no special preparation is necessary. A sample shall be taken with a cylindrical tube of 40 mm3 capacity (3,7 mm diameter by 3,7 mm length). The tube shall be inserted into the substance and, after levelling off the surplus, the sample shall be removed from the tube by m
47、eans of a wooden rod. For substances which contain more than one constituent, the sample used for the test shall be representative of the original sample. 6.4 Liquid substances A sample is taken with a fine-drawn pipette of 40 mm3 capacity. 7Procedure 7.1 Preparation of the impact device Set the app
48、ropriate drop weight and the release device to the required drop height and clamp the release device to the guides. Place the impact device into the locating ring on the intermediate anvil without the upper steel cylinder. Place solid, paste-like and gel-type samples directly into the open impact de
49、vice. Place the upper steel cylinder in the impact device and press gently until it touches the sample, which can be recognised by a noticeable resistance. Avoid flattening of the sample as much as possible. Where consecutive determinations have to be undertaken with the same sample, note the height of the upper cylinder with respect to the collar and set to the same height for each of the subsequent determinations. Place liquid samples in the open device in such a
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