Bsi bs en 13631 5 2002 (2003)

Unknown BRITISH STANDARD BS EN 13631 5 2002 Explosives for civil uses — High explosives — Part 5 Determination of resistance to water The European Standard EN 13631 5 2002 has the status of a British[.]

BRITISH STANDARD BS EN

13631-5:2002

Explosives for civil

uses — High

explosives —

Part 5: Determination of resistance

to water

The European Standard EN 13631-5:2002 has the status of a

British Standard

ICS 71.100.30

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This British Standard was

published under the authority

of the Standards Policy and

Strategy Committee on

6 June 2003

© BSI 6 June 2003

This British Standard is the official English language version of

EN 13631-5:2002

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 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 publication 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/European 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, pages 2 to 10, an inside back cover and a back cover

The BSI copyright date displayed in this document indicates when the document was last issued

Amendments issued since publication

EUROPEAN STANDARD

NORME EUROPÉENNE

EUROPÄISCHE NORM

EN 13631-5

September 2002

ICS 71.100.30

English version

Explosives for civil uses - High explosives - Part 5:

Determination of resistance to water

Explosifs à usage civil - Explosifs - Partie 5: Détermination

de la résistance à l'eau Explosivstoffe für zivile Zwecke - Sprengstoffe - Teil 5:Bestimmung der Wasserfestigkeit

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 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 (English, 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 Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom.

EUROPEAN COMMITTEE FOR STANDARDIZATION

C O M I T É E U R O P É E N D E N O R M A L I S A T I O N

E U R O P Ä IS C H E S K O M IT E E FÜ R N O R M U N G

Management Centre: rue de Stassart, 36 B-1050 Brussels

© 2002 CEN All rights of exploitation in any form and by any means reserved

worldwide for CEN national Members. Ref No EN 13631-5:2002 E

page

Foreword 3

1 Scope 4

2 Normative references 4

3 Terms and definitions 4

4 Preliminary test for cartridged explosives 4

5 Preparation of notched test pieces 6

6 Test for water resistance 6

7 Test report 8

Annex A (informative) Range of applicability of the test method 9

Annex ZA (informative) Clauses of this European Standard addressing essential requirements or other provisions of EU Directives 10

EN 13631-5:2002 (E)

3

Foreword

This document (EN 13631-5:2002) has been prepared by Technical Committee CEN/TC 321 "Explosives for civil uses", 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 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 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 of a series of standards on Explosives for civil uses – High explosives The other parts of this series are:

prEN 13631-1 Part 1: Requirements

EN 13631-2 Part 2: Determination of thermal stability of explosives

prEN 13631-3 Part 3: Determination of sensitiveness to friction of explosives

EN 13631-4 Part 4: Determination of sensitiveness to impact of explosives

EN 13631-6 Part 6: Determination of resistance to hydrostatic pressure

prEN 13631-7 Part 7: Determination of safety and reliability at extreme temperatures

prEN 13631-10 Part 10: Method for the verification of the means of initiation

prEN 13631-11 Part 11: Determination of transmission of detonation

prEN 13631-12 Part 12: Determination of the initiating capability of boosters

prEN 13631-13 Part 13: Method for the determination of density

prEN 13631-14 Part 14: Method for the determination of velocity of detonation

prEN 13631-15 Part 15: Calculation of thermodynamic properties

prEN 13631-16 Part 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: Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and the United Kingdom

1 Scope

This European Standard specifies a method of determining the resistance to water of cartridged or bulk high explosives for civil uses, which are designed to be used for blasting operations in wet conditions

2 Normative references

This European Standard incorporates by dated or undated reference, provisions from other publications These normative references are cited 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 of the publication referred to applies (including amendments)

prEN 13631-10:2000, Explosives for civil uses – High explosives – Part 10: Method for the verification of the means

of initiation

prEN 13631-14, Explosives for civil uses – High explosives – Part 14: Method for the determination of velocity of detonation

prEN 13857-1:2001, Explosives for civil uses – Part 1: Terminology

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 terms and definitions given in prEN 13857-1:2001 apply

4 Preliminary test for cartridged explosives

4.1 General

Unless the manufacturer claims that the explosive composition is inherently water resistant, the cover material shall

be subjected to this preliminary test

4.2 Apparatus

4.2.1 V-shaped guide, made from aluminium or similar material, of length at least 500 mm longer than the

length of the cartridge under test (see Figure 1) The guide shall have a series of holes, spaced 2 mm apart in the direction at right angles to the axis of the guide, for the pin (see 4.2.2) The holes shall be located approximately

500 mm from end ‘B’ of the guide and at least the length of the cartridge from end ‘A’

4.2.2 Pin, made of stainless steel with a cone angle of 45° and a height of 5 mm (see Figure 2)

EN 13631-5:2002 (E)

5

Key

1 Direction of pushing

2 Explosive cartridge

3 Pin in position

4 Holes for the pin

5 Guide

Figure 1 - V-shaped guide and cartridge

Figure 2 - Steel pin

4.3 Procedure

Place the guide horizontally on a table

Place a cartridge in the guide so that one end is in line with end ‘A’ of the guide

According to the diameter of the cartridge place the pin in one of the holes so that it is in line with the area of the cartridge touching the guide

Push the cartridge through the guide to end ‘B’ Do not apply any vertical force

Rotate the cartridge 90° and repeat the test until there are four traces of the pin

Do this with a total of three cartridges

Inspect the traces very carefully and determine whether any perforation is visible If there is no perforation of the cover it is assumed to be an integral part of the water resistance of the product In this case the water resistance of the explosive shall be determined using the cartridges as supplied

If there is, on the other hand, any perforation of the cover it is not assumed to be an integral part of the water resistance of the explosive In this case the water resistance of the explosive shall be determined using test pieces comprising cartridges modified by cutting notches as described in 5.2

Do not use cartridges subjected to this preliminary test for further testing

5 Preparation of notched test pieces

5.1 General

If the manufacturer of cartridged explosives claims that the explosive composition is inherently water resistant, then notches shall be cut into all cartridges of the test piece

5.2 Cutting notches

Each notch shall be approximately 20 mm long, 0,5 mm wide and 5 mm deep The number of notches shall be such that there is one notch per 30 cm2 of surface The notches shall be uniformly distributed over the circumference

6 Test for water resistance

6.1 Apparatus

6.1.1 Means of initiation, as specified by the explosives manufacturer in terms of initiating capability according

to prEN 13631-10:2000, subclause 5.1

6.1.2 Water tank, which allows easy and complete immersion of the test pieces in water The height of the

water tank shall be sufficient to hold water to a depth of at least 200 mm plus the diameter of the test piece In the case of a tubular water tank its diameter shall be at least twice the diameter of the test piece

6.1.3 Means of assessing complete detonation, (e.g equipment for measuring velocity of detonation as

specified in prEN 13631-14, or witness plates)

EN 13631-5:2002 (E)

7

6.2 Procedure

6.2.1 Cartridged explosives

The test piece consists of a number of cartridges with a total length of at least 0,5 m The diameter and length of the cartridges shall be the minimum dimensions of products placed on the market

Fix the test piece along a wooden stick or metal rod If the test piece consists of two or more cartridges, there shall

be no visible gap between them

Prepare the test piece for initiation with the means of initiation as described in 6.1.1

Immerse the test piece in water at 20 °C to 30 °C to a water depth of 200 mm (see Figure 3) Fire the test piece after 5 h

If the cartridges are too big for the test method described, a plastic tubular tank of suitable length can be used as container In that case the test piece shall have a length of ten times its diameter Insert the test piece into the vertically oriented tube, prepare it for initiation with the means of initiation as described in 6.1.1 and fill the tube with water at 20 °C to 30 °C until the uppermost cartridge is covered by at least 200 mm of water Fire the test piece after 5 h

In either case, assess whether complete detonation has taken place

Key

1 Water

2 Wooden rod

3 Wire

4 Cartridge

5 Notches

6 Detonator

7 Leading wires

Figure 3 - Test assembly for cartridged explosives

The test piece consists of a representative sample of the explosive, which shall be loaded into a plastics liner with notches The liner shall have the smallest diameter intended for use of the explosive as stated by the manufacturer The length of the liner shall be at least ten times its diameter The dimensions, position and number of notches shall be as described in 5.2

Load the liner into a plastics pipe with an inner diameter of twice the diameter of the liner Prime the explosive with the means of initiation as described in 6.1.1 and fill the pipe with water

Fire the test piece after 5 h

Assess whether complete detonation has taken place

6.2.3 Alternative test method

If the methods described in 6.2.1 or 6.2.2 are not suitable, the explosive shall be tested using a borehole in a quarry or mine The diameter of the borehole shall be that normally used to accommodate the diameter of the test piece or, for bulk explosives, the minimum diameter recommended by the manufacturer for that product The borehole shall have a depth of at least 3 m below the water table After removing the water the borehole shall refill within not more than 60 min Load the borehole with the explosive under test and prepare it for blasting in the normal way Wait at least 5 h plus the time needed for refilling of the borehole and then fire the load Assess whether complete detonation has taken place

7 Test report

The test report shall conform to EN ISO/IEC 17025 In addition the following information shall be given:

a) a reference to this standard;

b) test parameters: temperature of the water in degrees Celsius, length of the cartridge column or liner or borehole, diameter of the cartridges or liner or borehole, material of the wrapping, if applicable;

c) for cartridged explosives the result of the preliminary test according to clause 4 and whether notches were cut or not, if applicable;

d) the number of tested cartridge columns or pipes or boreholes;

e) the number of fully detonated cartridge columns or the number of fully detonated pipes or boreholes

EN 13631-5:2002 (E)

9

Annex A

(informative)

Range of applicability of the test method

Range of applicability of the test method: 0 °C to + 99 °C

Clauses of this European Standard addressing essential requirements or

other provisions of EU Directives

This European Standard has been prepared under a mandate given to CEN by the European Commission and the European Free Trade Association and supports essential safety requirements of EU Directive 93/15/EEC

WARNING: Other requirements and other EU Directives may be applicable to the product(s) falling within the scope of this standard

The clauses of this standard are likely to support requirements I.1, I.2, II.1.(b), II.1.(f) and II.1.(j) of Directive 93/15/EEC

Compliance with this standard provides one means of conforming to the specific essential requirements of the Directive concerned and associated EFTA regulations