FprEN 13763-9

SLOVENSKI STANDARD
01-april-2021
Eksplozivi za civilno uporabo – Detonatorji in zakasnilniki – 9. del: Ugotavljanje
odpornosti detonatorjev proti upogibu
Explosives for civil uses - Detonators and relays - Part 9: Determination of resistance to
bending of detonators
Explosivstoffe für zivile Zwecke - Zünder und Verzögerungselemente - Teil 9:
Bestimmung des Widertandes von Zündern gegen Biegespannung
Explosifs à usage civil - Détonateurs et relais - Partie 9: Détermination de la résistance à
la flexion des détonateurs
Ta slovenski standard je istoveten z: prEN 13763-9
ICS:
71.100.30 Eksplozivi. Pirotehnika in Explosives. Pyrotechnics and
ognjemeti fireworks
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

DRAFT
EUROPEAN STANDARD
prEN 13763-9
NORME EUROPÉENNE
EUROPÄISCHE NORM
April 2021
ICS 71.100.30 Will supersede EN 13763-9:2003
English Version
Explosives for civil uses - Detonators and detonating cord
relays - Part 9: Determination of resistance to bending of
detonators
Explosifs à usage civil - Détonateurs et relais pour Explosivstoffe für zivile Zwecke - Zünder und
cordeau détonant - Partie 9 : Détermination de la Sprengschnurverbinder - Teil 9: Bestimmung des
résistance à la flexion des détonateurs Widertandes von Zündern gegen Biegespannung
This draft European Standard is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee
CEN/TC 321.
If this draft becomes a European Standard, 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.

This draft European Standard was established by CEN 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 CEN-CENELEC
Management Centre has the same status as the official versions.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and
United Kingdom.
Recipients of this draft are invited to submit, with their comments, notification of any relevant patent rights of which they are
aware and to provide supporting documentation.

Warning : This document is not a European Standard. It is distributed for review and comments. It is subject to change without
notice and shall not be referred to as a European Standard.

EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2021 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 13763-9:2021 E
worldwide for CEN national Members.

prEN 13763-9:2021 (E)
Contents Page
European foreword . 3
Introduction . 5
1 Scope . 6
2 Normative references . 6
3 Terms and definitions . 6
4 Principle . 7
5 Apparatus . 7
6 Preparation and handling of test samples and test pieces . 10
6.1 Handling of test samples . 10
6.2 Electric detonators . 10
6.3 Non-electric detonators . 10
6.4 Plain detonators . 10
6.5 Electronic detonators . 10
7 Procedure . 10
7.1 Electric and electronic detonators . 10
7.1.1 Electric detonators and electronic detonators supported at the base . 10
7.1.2 Electric detonators and electronic detonators supported at the top . 11
7.2 Non-electric detonators . 11
7.2.1 Non-electric detonators supported at the base . 11
7.2.2 Non-electric detonators supported at the top . 11
7.3 Plain detonators . 11
7.3.1 Plain detonators supported at base . 11
7.4 Functional test (all detonators) . 11
8 Expression of results . 12
9 Test report . 12
Annex ZA (informative) Relationship between this European Standard and the essential
safety requirements of Directive 2014/28/EU relating to the making available on the
market and supervision of explosives for civil uses aimed to be covered . 13
Bibliography . 14

prEN 13763-9:2021 (E)
European foreword
This document (prEN 13763-9:2021) has been prepared by Technical Committee CEN/TC 321
“Explosives for civil uses”, the secretariat of which is held by UNE.
This document is currently submitted to the CEN Enquiry.
This document will supersede EN 13763-9:2003.
In comparison with the previous edition, the following technical modifications have been made:
a) Clause 1, Scope, has been revised:
1) It now includes electric detonators, non-electric detonators, plain detonators and electronic
detonators;
2) it has been added that the document applies to explosives for civil uses;
b) in Clause 3, Terms and definitions, term 3.1 has been added and Figure 2 has been added to term 3.2;
c) Clause 4, Principle, has been added;
d) Clause 6, Preparation and handling of test samples and test pieces, has been revised
1) it is now specified that detonators shall have the same design and composition according to the
manufacturer’s specification;
2) 6.1, Handling of test samples, has been added;
e) in Clause 7, Procedure, subclause 7.4, Functional test, has been added;
f) Clause 8, Expression of results, has been added;
g) Annex A, Range of applicability of the test method, has been removed;
h) Annex ZA has been updated.
This document has been prepared under a Standardization Request (M/562) annexed to the Commission
Implementing Decision C(2019)6634 final as regards Explosives for civil uses given to CEN by the
European Commission and the European Free Trade Association, and supports Essential Safety
requirements of Directive 2014/28/EU.
For relationship with Directive 2014/28/EU, see informative Annex ZA, which is an integral part of this
document.
EN 13763, Explosives for civil uses — Detonators and detonating cord relays, is currently composed with
the following parts:
— Part 1: Requirements
— Part 2: Verification of thermal stability
— Part 3: Determination of sensitiveness to impact
prEN 13763-9:2021 (E)
— Part 4: Determination of resistance to abrasion of leading wires and shock tubes
— Part 5: Determination of resistance to cutting damage of leading wires and shock tubes
— Part 6: Determination of resistance to cracking in low temperatures of leading wires
— Part 7: Determination of the mechanical strength of leading wires, shock tubes, connections, crimps and
closures
— Part 8: Determination of resistance to vibration
— Part 9: Determination of resistance to bending of detonators
— Part 11: Determination of drop resistance of detonators and relays
— Part 12: Determination of resistance to hydrostatic pressure
— Part 13: Determination of resistance of electric detonator to electrostatic discharge
— Part 15: Determination of equivalent initiating capability
— Part 16: Determination of delay accuracy
— Part 17: Determination of no-fire current of electric detonators
— Part 18: Determination of series firing current of electric detonators
— Part 19: Determination of firing pulse of electric detonators
— Part 20: Determination of total resistance of electric detonators
— Part 21: Determination of flash-over voltage of electric detonators
— Part 22: Determination of capacitance, insulation resistance and insulation breakdown of leading wires
— Part 23: Determination of the shock-wave velocity of shock tube
— Part 24: Determination of the non-conductivity of shock tube
— Part 25: Determination of transfer capacity of relay and coupling accessories
— Part 26: Definitions, methods and requirements for devices and accessories for reliable and safe function
of detonators and relays
— Part 27: Definitions, methods and requirements for electronic initiation system
prEN 13763-9:2021 (E)
Introduction
During use on site, detonators can be subjected to bending during the loading of boreholes. This test
assesses the ability of detonators to resist the bending forces likely to be experienced in normal use.
prEN 13763-9:2021 (E)
1 Scope
This document specifies a method for determining the resistance of the electric detonators, non-electric
detonators, plain detonators and electronic detonators to bending.
This document applies to explosives for civil uses.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any amendments) applies.
prEN 13857-1:2021, Explosives for civil uses — Part 1: Terminology
3 Terms and definitions
For the purposes of this document, the terms and definitions given in prEN 13857-1:2021 and the
following apply.
3.1
crack
discontinuity in the shell which can be detected by a visual examination
3.2
weakest point of the detonator
point from where the outer shell will break when subjected to a 90-degree angle pulling force
Note 1 to entry: The principle for finding the weakest point is shown in Figure 1 and Figure 2.

Key
1 delay element
2 primary charge cup
the weakest points
Figure 1 — Principle of finding weakest points of the detonator
prEN 13763-9:2021 (E)
Key
1 electronic circuit
2 fuse head
3 mechanically supported area (e.g. initiating element, base charge etc.
4 weakest point (middle of the unsupported area of the shell)
5 crimp
Figure 2 — Principle of finding weakest points of the electronic detonator
4 Principle
The test piece is subjected to a bending force by fixing one end in a steel block and attaching a weight to
the other end. Two types of tests are performed, one where the test piece is supported at the base and
one where the test piece is supported at the top. It is recorded whether the detonator explodes during
the test and if cracking or breaking of the shell occurs. After being subjected to the bending force the test
piece is initiated according to the manufacturer’s specification. It is recorded whether the test piece
detonate or not.
5 Apparatus
5.1 Steel block see Figure 3, with a hole (A) of at least 30 mm in length (L). The diameter of the hole
shall not exceed the diameter of the detonator by more than 0,1 mm. The radius (R) for the edge of the
hole shall be (2 ± 0,1) mm.
Key
A diameter of the hole
L length of the hole minimum 30 mm
R radius for the edge of the hole
Figure 3 — Steel block
5.2 Weights, capable of applying (50 ± 0,1) N, with wire attachment.
prEN 13763-9:2021 (E)
5.3 Movable support table, for supporting the weights as shown in Figure 4 and Figure 5.

Key
1 steel block
2 detonator (shown as an electric detonator)
3 ring
4 weight
5 movable support table
6 approx. position of the end of the delay element or the base charge
A diameter of the hole
Figure 4 — Assembly with detonator supported at the base
...