FprEN 13631-11

SLOVENSKI STANDARD
01-april-2021
Eksplozivi za civilno uporabo - Razstreliva - 11. del: Ugotavljanje prenosa
detonacije
Explosives for civil uses - High explosives - Part 11: Determination of transmission of
detonation
Explosivstoffe für zivile Zwecke - Sprengstoffe - Teil 11: Bestimmung der
Detonationsweiterleitung
Explosifs à usage civil - Explosifs - Partie 11: Détermination de la transmission de la
détonation
Ta slovenski standard je istoveten z: prEN 13631-11
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 13631-11
NORME EUROPÉENNE
EUROPÄISCHE NORM
April 2021
ICS 71.100.30 Will supersede EN 13631-11:2003
English Version
Explosives for civil uses - Explosives - Part 11:
Determination of the transmission of detonation of
explosives
Explosifs à usage civil - Explosifs - Partie 11: Explosivstoffe für zivile Zwecke - Explosivstoffe - Teil
Détermination de la transmission de la détonation des 11: Bestimmung der Detonationsübertragung von
explosifs Explosivstoffen
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 13631-11:2021 E
worldwide for CEN national Members.

prEN 13631-11:2021 (E)
Contents Page
European foreword . 3
1 Scope . 4
2 Normative references . 4
3 Terms and definitions . 4
4 Principle . 4
5 Apparatus . 5
6 Test pieces . 6
6.1 General. 6
6.2 Assembly of the test piece and means of initiation . 7
6.2.1 Test set up without confinement . 7
6.2.2 Test set up with confinement . 8
6.2.3 Initiation with a detonator . 9
6.2.4 Initiation with a booster . 9
7 Procedure . 9
8 Test report . 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 . 11
Bibliography . 12

prEN 13631-11:2021 (E)
European foreword
This document (prEN 13631-11:2021) 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 for the CEN Enquiry.
This document will supersede EN 13631-11:2003.
In comparison with the previous edition, the following technical modifications have been made:
a) the main element of the document’s title has been changed from “High explosives” to “Explosives”;
b) the normative references have been updated;
c) Annex A, Range of applicability of the test method, has been removed;
d) 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 13631, Explosives for civil uses — Explosives, is currently composed with the following parts:
— Part 1: Requirements
— Part 2: Determination of thermal stability of explosives
— Part 3: Determination of sensitiveness to friction of explosives
— Part 4: Determination of sensitiveness to impact of explosives
— Part 5: Determination of resistance of explosives to water
— Part 6: Determination of resistance of explosives to hydrostatic pressure
— Part 7: Determination of safety and reliability of explosives at extreme temperatures
— Part 10: Method for the verification of the means of initiation of explosives
— Part 11: Determination of transmission of detonation of explosives
— Part 13: Determination of density of explosives
— Part 14: Determination of velocity of detonation of explosives
prEN 13631-11:2021 (E)
1 Scope
This document specifies a test method for the determination of the ability of cartridged explosives to
transmit detonation.
The method is applicable to explosives in cartridges, excluding black powder, explosives pre-products
and other non-detonating explosives.
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 13630-7:2021, Explosives for civil uses — Detonating cords and safety fuses — Part 10:
Determination of the reliability of initiation of detonating cords
prEN 13631-14:2021, Explosives for civil uses — Explosives — Part 14: Method for the determination of
the velocity of detonation of explosives
prEN 13857-1:2021, Explosives for civil uses — Part 1: Terminology
EN 10025-2:2005, Hot rolled products of structural steels — Part 2: Technical delivery conditions for non-
alloy structural steels
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
cap-sensitive explosive
explosive which can be initiated by a single detonator
4 Principle
The transmission of detonation is determined by testing the ability of two unconfined and coaxially
suspended cartridges to transmit the detonation from one to the other, where the cartridges have the
same diameter and are separated by an air gap.
While normally the cartridges in a borehole shall be in direct contact which each other, forming an
uninterrupted column of explosives, in practice it cannot always be excluded that smaller objects drop
in between and generate a small separation. This test adds to the safety in use.
When the manufacturer claims that the explosive will need confinement in order to properly function,
the transmission of detonation is determined with the explosive inside a steel tube of suitable
dimensions.
The donor cartridge when initiated shall initiate the acceptor cartridge.
The temperature during the test shall be within the range of use given by the manufacturer.
prEN 13631-11:2021 (E)
5 Apparatus
5.1 Means of initiation, as specified by the explosives’ manufacturer.
5.2 Support, for holding the cartridges, comprising a thin wooden or metal rod or other device which
will not affect the velocity of detonation. When confinement of the explosive is required, the support
shall hold the cartridges inside a steel tube (5.3).
5.3 Steel tubes, the dimensions shall be in accordance with Table 1.
The steel quality shall be structural steel with a minimum yield strength of 235 MPa at 16 mm, which is
specified in accordance with EN 10025-1:2005 as “S 235 xx”.
The internal diameter of the steel tube shall be the smallest where the cartridges still can be inserted
into it without difficulty.
In case the start-stop-method (prEN 13631-14:2021, 5.4.1) is used, holes shall be drilled in the tube to
allow the insertion of the sensors of the measuring equipment at positions in accordance to Clause 6.
The diameter of the holes shall be no larger than to allow the insertion of the sensors
(prEN 13631-14:2021, 5.4.1).
Table 1 — Dimensions of steel tubes
Internal diameter Wall thickness
[mm] [mm]
17,3 2,0
22,9 2,0
29,1 2,3
37,2 2,6
43,1 2,6
54,5 2,9
70,3 2,9
82,5 3,2
107,1 3,6
131,7 4,0
159,3 4,5
206,5 6,3
260,4 6,3
309,7 7,1
NOTE The dimensions are in accordance with ISO 4200:1991, Table 1, “range of preferred thickness E”,
which are commercial steel tubes for general use. To facilitate the use in this standard the outer diameter
dimensions given in ISO 4200:1991, Table 1 have been converted to inner diameter values.
5.4 Thermometer, capable of measuring the temperature of the test environment and the
temperature of the high explosive with an accuracy of ± 1 °C.
5.5 Measuring tape, capable of measuring length up to 200 cm with an accuracy of 1 mm.
prEN 13631-11:2021 (E)
5.6 Measuring equipment for velocity of detonation, as specified in prEN 13631-14:2021, 5.4.
5.7 Witness equipment for the verification of the reliability of initiation of detonating cords, as
specified in prEN 13630-7:2021.
5.8 Calliper, capable of measuring length up to 200 mm with an accuracy of 0,1 mm.
5.9 Balance, with an accuracy to 1 g.
6 Test pieces
6.1 General
The test pieces shall be cartridges of the same diameter d and having the smallest diameter placed on
the market by the manufacturer. The cartridge being initiated is referred to as the “donor”, the cartridge
which shall undergo complete detonation caused by the donor is referred to as “acceptor”.
In order to ensure that a stable detonation can be obtained, the length of the donor cartridge shall be at
least five times its diameter
The length of the acceptor cartridge shall be at least five times its diameter (d). This length shall be
increased as required if the measurement of velocity of detonation, as described in
prEN 13631-14:2021, is used to detect proper detonation of the acceptor cartridge.
When the length of the supplied cartridge(s) is less than that required to satisfy the above, prepare
donor and acceptor by joining two or more cartridges together. In case of clipped cartridges or
cartridges with rounded ends, the end portions of two cartridges shall be cut off to form a flat surface,
with the cross section not less than the diameter of the cartridge, and the cartridges shall be joined by
butting together and taping securely.
The cartridges are separated by a distance D of 20 mm. The length D of this gap is measured between
the ends of flat-ended cartridges (see Figure 1). For cartridges having rounded ends, the following
method shall be used: place the ends of the cartridges in contact, without pressure. Then move one
cartridge by the required distance of 20 mm along the central axis of the setup (see Figure 2).
Measure the diameter of the explosives using the calliper (5.6). Measure the length of the test piece with
measuring tape (5.5). Weigh the mass of test piece using the balance (5.9). Record all the values.

Figure 1 — Gap measurement for flat-end cartridges

Figure 2 — Gap measurement for cartridges having rounded ends
oSIS
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