FprEN 13763-16

SLOVENSKI STANDARD
01-april-2021
Eksplozivi za civilno uporabo – Detonatorji in zakasnilniki – 16. del: Ugotavljanje
časa zakasnitve
Explosives for civil uses - Detonators and relays - Part 16: Determination of delay
accuracy
Explosivstoffe für zivile Zwecke - Zünder und Verzögerungselemente - Teil 16:
Bestimmung der Verzögerungsgenauigkeit
Explosifs à usage civil - Détonateurs et relais - Partie 16 : Détermination de la précision
du retard
Ta slovenski standard je istoveten z: prEN 13763-16
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 13763-16
NORME EUROPÉENNE
EUROPÄISCHE NORM
April 2021
ICS 71.100.30 Will supersede EN 13763-16:2003
English Version
Explosives for civil uses - Detonators and detonating cord
relays - Part 16: Determination of delay accuracy
Explosifs à usage civil - Détonateurs et relais pour Explosivstoffe für zivile Zwecke - Zünder und
cordeau détonant - Partie 16: Détermination de la Sprengschnurverbinder - Teil 16: Bestimmung der
précision du retard Verzögerungsgenauigkeit
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 13763-16:2021 E
worldwide for CEN national Members.

prEN 13763-16:2021 (E)
Contents Page
European foreword . 3
Introduction . 5
1 Scope . 6
2 Normative references . 6
3 Terms and definitions . 6
4 Principle . 6
5 Apparatus . 6
6 Preparation and handling of test samples and test pieces . 7
7 Procedure . 7
7.1 Conditioning . 7
7.2 Electric detonators . 7
7.3 Non-electric detonators and surface connectors . 7
7.4 Detonating cord relays . 8
8 Expression of results . 8
9 Test report . 9
Annex A (normative) Calculation of results . 10
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 . 15
Bibliography . 16

prEN 13763-16:2021 (E)
European foreword
This document (prEN 13763-16:2021) 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 13763-16:2003.
In comparison with the previous edition, the following technical modifications have been made:
a) Clause 1, Scope, has been revised:
1) it has been specified that this is a method for electric detonators, non-electric detonators, surface
connectors and detonating cord relays with pyrotechnic delay elements;
2) it has been added that the document applies to explosives for civil uses;
b) in Clause 3, Terms and definitions, the definition for term 3.2 has been updated;
c) Clause 4, Principle, has been added;
d) Clause 5, Apparatus, has been revised;
e) Clause 6, Preparation and handling of test samples and test pieces, has been revised;
f) in Clause 7, Procedure:
1) magnetically coupled detonators have been removed;
2) subclauses for each product type including an addition of detonating cord relays have been
added;
g) Annex A, Range of applicability of the test method, has been removed;
h) Annex C, Guidance for theoretical verification, has been moved to prEN 13857-3;
i) 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
prEN 13763-16:2021 (E)
— Part 3: Determination of sensitiveness to impact
— 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 13763-16:2021 (E)
Introduction
During blasting work, non-electric detonators, electric detonators, surface connectors and detonating
cord relays with different delay times are used to ensure that the sequence of initiation of the explosive
charges is executed in a way where the risk of overlapping is minimized. This test method describes the
measurement of the delay time. It is checked that detonators of a certain delay interval do not detonate
at the time of a different delay interval.
prEN 13763-16:2021 (E)
1 Scope
This document specifies a method for determining the delay time accuracy of electric detonators, non-
electric detonators, surface connectors and detonating cord relays with pyrotechnic delay elements.
This document applies to explosives for civil uses.
NOTE The method for determining the delay time accuracy for electronic initiation systems is included in
prEN 13763-27.
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
overlapping
detonation out of intended sequence
3.2
outlier
member of a set of values which is inconsistent of other members of that set
[SOURCE: ISO 5725-1:1994, 3.21]
4 Principle
The test piece is initiated by means of initiation dependent of its type. The delay time between initiation
pulse and detonation is measured.
5 Apparatus
5.1 power source for electric detonators, able to produce a continuous current (i) in accordance
with the manufacturer’s specification and within i ≤ I ≤ 2i the series firing current (i ) for the specific
s s s
type of electric detonator) with an accuracy of ± 1,0 %.
5.2 initiating device for non-electric detonators/surface connectors/detonating cord relays, for
initiating shock tubes/detonating cord.
5.3 timer or oscilloscope to measure the delay time between the start pulse and the stop pulse with
an accuracy of 0,1 ms.
5.4 electric triggering circuit for electric detonators, capable of providing an electric pulse at the
time when the ignition current is applied; or
5.5 optical sensors or pressure sensors for non-electric detonators/surface
connectors/detonating cord relays, capable of providing one electric pulse when the shockwave of the
shock tube passes the sensor.
prEN 13763-16:2021 (E)
5.6 optical sensors, pressure sensors or two enamel insulated twisted copper wires for detonating
cord relays capable of detecting the detonation wave of detonating cord.
5.7 optical sensors, pressure sensors or two enamel insulated twisted copper wires for non
electric detonators/surface connectors, capable of providing one electric start pulse and one electric
stop pulse.
5.8 conditioning chamber, capable of maintaining a temperature in the range 15 °C to 30 °C
within ± 2 °C.
6 Preparation and handling of test samples and test pieces
Test samples for detonators, detonating cord relays, surface connectors should be handled according to
EN ISO/IEC 17025:2017, 7.4.
Select 30 non-electric detonators, electric detonators, surface connectors or detonating cord relays of
each interval number (i.e. nominal delay time stated by the manufacturer) from a specific type, having
the same chemical composition, charge, dimensions, material and construction. For non-electric
detonators, the length of shock tube attached to the non-electric detonator/surface connector during the
test shall be specified by the manufacturer.
7 Procedure
7.1 Conditioning
Condition the electric detonators, non-electric detonators, surface connectors or detonating cord relays
in the conditioning chamber (see 5.7) for at least 2 h prior to testing, within ± 2 °C of a temperature
specified by the manufacturer in the range 15 °C to 30 °C.
7.2 Electric detonators
The test shall be carried out within ± 2 °C of the conditioning temperature.
Insert the electric detonators in the apparatus to obtain a stop pulse from the sensor when the base
charge of the electric detonator detonates.
Connect the electric detonators to the power source (5.1) and electric triggering circuit (5.4).
Initiate the electric detonators according to the manufac
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