EN 13763-25:2025

Explosives for civil uses - Detonators and detonating cord relays - Part 25: Verification of transfer capability of detonating cord relays, surface connectors and coupling accessories

This document specifies a method for the verification of the transfer capability of surface connectors, detonating cord relays and coupling accessories.
In case of coupling accessories, the document applies to non-electric detonators, electronic detonators and surface connectors where the shock tube is equipped with a coupling accessory and to shock tubes equipped with a coupling accessory.
This document does not apply to electric detonators, plain detonators, semi-finished detonators, and electronic initiation systems.

Explosivstoffe für zivile Zwecke - Zünder und Sprengschnurverzögerer - Teil 25: Überprüfung des Übertragungsvermögens von Sprengschnurverbindern, Oberflächenverbindern und Verbindern

Dieses Dokument legt ein Prüfverfahren zur Überprüfung des Übertragungsvermögens von Oberflächen-verbindern, Sprengschnurverzögerern und Verbindern fest.
Hinsichtlich Verbindern ist das Dokument anwendbar auf nichtelektrische Zünder, elektronische Zünder und Oberflächenverbinder, bei denen der Zündschlauch über einen Verbinder verfügt, und es ist anwendbar auf Zündschläuche, die über einen Verbinder verfügen.
Dieses Dokument ist nicht anwendbar auf elektrische Zünder, Sprengkapseln, halbfertige Zünder und elektronische Zündsysteme.

Explosifs à usage civil - Détonateurs et relais pour cordeau détonant - Partie 25 : Vérification de la capacité de transmission des relais pour cordeau détonant, des connecteurs de surface et des manchons d’accouplement

Le présent document spécifie une méthode de vérification de la capacité de transmission des connecteurs de surface, des relais pour cordeau détonant et des manchons d’accouplement.
Dans le cas de manchons d’accouplement, le document s’applique aux tubes à transmission d’ondes de choc équipés d’un manchon d’accouplement ainsi qu’aux détonateurs non électriques, aux détonateurs électroniques et aux connecteurs de surface dont le tube à transmission d’ondes de choc est équipé d’un manchon d’accouplement.
Le présent document ne s’applique pas aux détonateurs électriques, pyrotechniques et semi finis ni aux systèmes d’amorçage électroniques.

Eksplozivi za civilno uporabo - Detonatorji in zakasnilniki - 25. del: Preverjanje prenosne zmogljivosti zakasnilnikov, površinskih konektorjev in priključkov

General Information

• Status: Published
• Publication Date: 30-Sep-2025
• ICS: 71.100.30 - Explosives. Pyrotechnics and fireworks
• Technical Committee: CEN/TC 321 - Explosives for civil uses
• Drafting Committee: CEN/TC 321/WG 4 - Detonators and relays
• Current Stage: 6060 - Definitive text made available (DAV) - Publishing
• Start Date: 01-Oct-2025
• Due Date: 04-Apr-2022
• Completion Date: 01-Oct-2025
• Directive: 2014/28/EU - Directive 2014/28/EU of the European Parliament and of the Council of 26 February 2014 on the harmonisation of the laws of the Member States relating to the making available on the market and supervision of explosives for civil uses
• Mandate: M/055 - Standardization mandate to CEN for explosives for civil uses
• Mandate: M/562 - Standardization Request on Explosives for civil use
• Ref Project: SIST EN 13763-25:2025 - Explosives for civil uses - Detonators and detonating cord relays - Part 25: Verification of transfer capability of detonating cord relays, surface connectors and coupling accessories

Relations

• Replaces: EN 13763-25:2004 - Explosives for civil uses - Detonators and relays - Part 25: Determination of transfer capability of surface connectors, relays and coupling accessories
• Effective Date: 23-Oct-2019

Overview

EN 13763-25:2025 is a European standard developed by CEN that defines the verification method for the transfer capability of detonating cord relays, surface connectors, and coupling accessories used in explosives for civil applications. Specifically, it addresses the testing procedures to ensure that these components reliably transfer shock waves during initiation. The standard excludes electric detonators, plain detonators, semi-finished detonators, and electronic initiation systems. This updated version supersedes EN 13763-25:2004, incorporating key technical revisions to improve clarity and testing accuracy.

Key Topics

• Scope and Applicability
  EN 13763-25:2025 applies to non-electric detonators, electronic detonators, surface connectors with shock tubes, and coupling accessories that link shock tubes or detonating cords. It covers the verification of transfer capability but does not apply to certain detonator types and electronic systems.

• Verification Principle
  The standard describes how shock waves propagate from one explosive component to another through connectors, relays, or coupling accessories. Successful transfer is confirmed by initiation or observable effects such as piercing or burning on taped ends or indentations on witness plates.

• Test Apparatus and Materials
  Essential test equipment includes:

  • Specified shock tubes and detonating cords conforming to related standards
  • Means of initiation appropriate for the explosive article
  • Witness plates made from aluminum alloy EN AW-6082
  • Adhesive paper and conventional adhesive tapes for securing components and sealing open ends
  • Measuring devices for sample preparation

• Testing Procedures

  • Surface Connectors: Connect up to five shock tubes, tape their open ends, and initiate the test piece. Successful transfer is indicated by damage (piercing, burning, discoloration) to all shock tube ends.
  • Detonating Cord Relays: Connect donor and acceptor detonating cords with witness plates taped to acceptor cords. Initiate the donor cord and verify shock wave transfer by observing indentations on witness plates.
  • Coupling Accessories: Attach detonating cords and relevant detonators to the coupling accessory, tape open ends if applicable, and initiate. Successful transfer depends on detonator detonation or tape damage as applicable.

• Result Expression and Reporting
  Results are recorded as "pass" or "fail" based on whether each test piece successfully transfers the shock wave to all connected components. The standard includes detailed guidance on documenting and reporting test outcomes.

Applications

EN 13763-25:2025 is essential for manufacturers, quality auditors, and safety engineers dealing with explosives for civilian use. Its practical value lies in:

• Ensuring reliable initiation systems in mining, construction, and demolition blasting operations
• Confirming performance and safety of detonating cord relays and surface connectors before commercial release
• Supporting compliance with European directives on explosives safety and market supervision
• Assisting testing laboratories in uniform verification procedures aligned with EN 13763 series standards

By following this standard, stakeholders can mitigate risks associated with failure to transfer shock waves, thereby enhancing operational safety and reducing false initiations or misfires.

Related Standards

EN 13763-25:2025 works in conjunction with several other standards for comprehensive explosives safety and performance regulation, including:

• EN 13763-1:2025 – Requirements for detonators and detonating cord relays
• EN 13630-1:2025 – Requirements for detonating cords and safety fuses
• EN 13763-12:2025 – Verification of resistance to hydrostatic pressure of detonators and connectors
• EN 13857-1:2025 – Vocabulary related to explosives for civil uses
• EN 573-3:2019+A2:2023 – Chemical composition and designation of aluminum alloys for witness plates
• EN ISO/IEC 17025:2017 – General requirements for testing laboratory competence (referenced for test reporting)

Together, these standards form a robust framework to govern the safety, reliability, and testing of explosives initiation systems for civil applications.

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By adhering to EN 13763-25:2025, industry professionals ensure the dependable performance of critical linking components in explosive systems, supporting safe and effective operations in multiple civilian sectors. This standard represents a key element in harmonized European explosives regulation, bolstering safety, quality assurance, and regulatory compliance.

Standards Content (Sample)

SLOVENSKI STANDARD
01-december-2025
Eksplozivi za civilno uporabo - Detonatorji in zakasnilniki - 25. del: Preverjanje
prenosne zmogljivosti zakasnilnikov, površinskih konektorjev in priključkov
Explosives for civil uses - Detonators and detonating cord relays - Part 25: Verification of
transfer capability of detonating cord relays, surface connectors and coupling
accessories
Explosivstoffe für zivile Zwecke - Zünder und Sprengschnurverzögerer - Teil 25:
Überprüfung des Übertragungsvermögens von Sprengschnurverbindern,
Oberflächenverbindern und Verbindern
Explosifs à usage civil - Détonateurs et relais pour cordeau détonant - Partie 25 :
Vérification de la capacité de transmission des relais pour cordeau détonant, des
connecteurs de surface et des manchons d’accouplement
Ta slovenski standard je istoveten z: EN 13763-25:2025
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.

EN 13763-25
EUROPEAN STANDARD
NORME EUROPÉENNE
October 2025
EUROPÄISCHE NORM
ICS 71.100.30 Supersedes EN 13763-25:2004
English Version
Explosives for civil uses - Detonators and detonating cord
relays - Part 25: Verification of transfer capability of
detonating cord relays, surface connectors and coupling
accessories
Explosifs à usage civil - Détonateurs et relais pour Explosivstoffe für zivile Zwecke - Zünder und
cordeau détonant - Partie 25 : Vérification de la Sprengschnurverzögerer - Teil 25: Überprüfung des
capacité de transmission des relais pour cordeau Übertragungsvermögens von Sprengschnurverbindern,
détonant, des connecteurs de surface et des manchons Oberflächenverbindern und Verbindern
d'accouplement
This European Standard was approved by CEN on 29 September 2025.

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 CEN-CENELEC 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 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, Türkiye and
United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2025 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 13763-25:2025 E
worldwide for CEN national Members.

Contents Page
European foreword . 3
1 Scope . 5
2 Normative references . 5
3 Terms and definitions . 5
4 Principle . 5
5 Apparatus . 6
6 Preparation of test samples and test pieces. 6
7 Procedure . 6
7.1 Surface connectors . 6
7.2 Detonating cord relays . 7
7.3 Coupling accessories . 8
8 Expression of results . 8
9 Test report . 8
Annex ZA (informative) Relationship between this European Standard and the essential
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 . 9
Bibliography . 10
European foreword
This document (EN 13763-25:2025) has been prepared by Technical Committee CEN/TC 321 “Explosives
for civil uses”, the secretariat of which is held by UNE.
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 April 2026, and conflicting national standards shall be
withdrawn at the latest by April 2026.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN shall not be held responsible for identifying any or all such patent rights.
This document supersedes EN 13763-25:2004.
EN 13763-25:2004:
a) the document title has been changed from “Detonators and relays — Part 25: Determination of
transfer capability of surface connectors, relays and coupling accessories” to “Detonators and
detonating cord relays — Part 25: Verification of transfer capability of detonating cord relays, surface
connectors and coupling accessories”;
b) the Introduction has been removed;
c) the Scope has been revised to clarify the covered and not covered explosives;
d) the normative references have been updated;
e) the former terminology entry 3.1 has been removed;
f) the Clause 4 “Principle” has been added;
g) the Clause “Apparatus” has been revised and completed;
h) the Clause “Test pieces” is now called “Preparation of test sample” and has been revised;
i) the Clause “Procedure” has been revised so that the criteria whether the explosive articles that may
be hung from near-vertical rock faces together with the IPX4-spray test has been removed;
j) the Clause “Procedure” has been restructured and further detailed; Figure 1 has been added;
k) the Clause 8 “Expression of results” has been added;
l) the Clause “Test report” does no longer require conformity with EN ISO/IEC 17025 and the
information to be provided has been revised and extended;
m) the former Annex A “Range of applicability of the test method” has been removed;
n) the Annex ZA has been updated;
o) the Bibliography has been added and lists EN ISO/IEC 17025:2017.
This document has been prepared under a standardization request addressed to CEN by the European
Commission. The Standing Committee of the EFTA States subsequently approves these requests for its
Member States.
For the relationship with EU Legislation, see informative Annex ZA, which is an integral part of this
document.
A list of all parts in the EN 13763 series, published under the general title Explosives for civil uses —
Detonators and detonating cord relays, can be found on the CEN website.
Any feedback and questions on this document should be directed to the users’ national standards body.
A complete listing of these bodies can be found on the CEN website.
According to the CEN-CENELEC Internal Regulations, the national standards organisations of the
following countries are bound to implement this European Standard: 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, Türkiye and the United
Kingdom.
1 Scope
This document specifies a method for the verification of the transfer capability of surface connectors,
detonating cord relays and coupling accessories.
In case of coupling accessories, the document applies to non-electric detonators, electronic detonators
and surface connectors where the shock tube is equipped with a coupling accessory and to shock tubes
equipped with a coupling accessory.
This document does not apply to electric detonators, plain detonators, semi-finished detonators, and
electronic initiation systems.
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.
EN 573-3:2019+A2:2023, Aluminium and aluminium alloys — Chemical composition and form of wrought
products — Part 3: Chemical composition and form of products
EN 13630-1:2025, Explosives for civil uses — Detonating cords and safety fuses — Part 1: Requirements
EN 13763-1:2025, Explosives for civil uses — Detonators and detonating cord relays — Part 1:
Requirements
EN 13763-12:2025, Explosives for civil uses — Detonators and detonating cord relays — Part 12:
Verification of resistance to hydrostatic pressure of detonators, detonating cord relays and surface
connectors
EN 13857-1:2025, Explosives for civil uses — Part 1: Vocabulary
3 Terms and definitions
For the purposes of this document, the terms and definitions given in
...