SIST EN 13631-2:2025

Explosives for civil uses - Explosives for blasting, boosters and explosive substances - Part 2: Verification of thermal stability

This document specifies a test method for the verification of the thermal stability at 75 °C of explosives for blasting, boosters and explosive substances.
This document also applies to black powder when used for blasting.
This document also applies to solid gun propellants, solid rocket propellants, black powder used as propellants, for safety fuse or for pyrotechnics and powder cakes as covered by EN 13938-1:2025.

Explosivstoffe für zivile Zwecke - Sprengstoffe, Verstärkungsladungen und Explosivstoffe - Teil 2: Überprüfung der thermischen Stabilität

Dieses Dokument legt ein Prüfverfahren für die Überprüfung der thermischen Stabilität von Sprengstoffen, Verstärkungsladungen und explosiven Stoffen bei 75 °C fest.
Dieses Dokument ist ebenfalls anzuwenden für zum Sprengen verwendetes Schwarzpulver.
Dieses Dokument ist ebenfalls anzuwenden für Treibladungspulver, feste Raketentreibstoffe sowie als Treibmittel für Sicherheitsanzündschnur oder Pyrotechnik verwendetes Schwarzpulver und Pulverrohmasse nach EN 13938-1:2025.

Explosifs à usage civil - Explosifs de mine, relais de détonation et substances explosives - Partie 2 : Vérification de la stabilité thermique

Le présent document spécifie une méthode d'essai pour la vérification de la stabilité thermique à 75 °C des explosifs de mine, des relais de détonation et des substances explosives.
Le présent document s'applique également à la poudre noire de mine.
Le présent document s'applique également aux poudres pour armes, aux propergols solides pour propulseurs, à la poudre noire utilisée comme propergol, pour les mèches de sûreté ou pour la pyrotechnie et les galettes tels que couverts par l’EN 13938 1:2025.

Eksplozivi za civilno uporabo - Eksplozivi za miniranje, ojačevalci in eksplozivne snovi - 4. del: Preverjanje toplotne stabilnosti

General Information

• Status: Published
• Public Enquiry End Date: 02-May-2021
• Publication Date: 26-Oct-2025
• ICS: 71.100.30 - Explosives. Pyrotechnics and fireworks
• Technical Committee: IEKS - Explosives
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 16-Oct-2025
• Due Date: 21-Dec-2025
• Completion Date: 27-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/562 - Standardization Request on Explosives for civil use
• Ref Project: EN 13631-2:2025 - Explosives for civil uses - Explosives for blasting, boosters and explosive substances - Part 2: Verification of thermal stability

Relations

• Revised: SIST EN 13631-2:2002 - Explosives for civil uses - High explosives - Part 2: Determination of thermal stability of explosives
• Effective Date: 18-Jan-2023

Overview

SIST EN 13631-2:2025 is a European standard developed by CEN that specifies a test method for verifying the thermal stability of explosives used for civil purposes. This includes explosives for blasting, boosters, and various explosive substances. A key focus of the standard is assessing the safety and stability of these materials when exposed to elevated temperatures, specifically at 75 °C. The standard also applies to black powder used for blasting, as well as certain solid gun and rocket propellants and pyrotechnic powders as referenced in EN 13938-1:2025.

Thermal stability verification is crucial for ensuring that explosives do not inadvertently detonate or degrade under environmental conditions encountered during handling, transport, and storage. SIST EN 13631-2:2025 supersedes the previous 2002 version, introducing updated terminology, procedures, and testing apparatus requirements.

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Key Topics

• Scope
  The standard covers testing of explosive materials such as blasting explosives, boosters, black powder (when used for blasting), solid propellants, and pyrotechnic powders. It defines a thermal stability verification test at 75 °C, relevant for transport and safety considerations.

• Test Principle
  Explosives are exposed to a controlled temperature of 75 ± 2 °C over a 48-hour period. Observations focus on signs of ignition, self-heating, mass change, or gas release that could indicate instability or degradation.

• Apparatus and Setup
  Required equipment includes a conditioning chamber with precise temperature control, glass beakers with gas-tight closures and rupture disks, thermocouples for temperature measurement, a balance with 0.1 g readability, and reference substances depending on the physical state of the explosive.

• Sample Preparation
  Testing involves preparing liquid, pasty, or compact explosive samples in specific volumes and dimensions, including the insertion of thermocouples into blind holes for solid samples to accurately monitor internal temperatures.

• Testing Procedure
  Samples and reference substances are conditioned at 75 °C, with temperature data logged continuously over 48 hours. The test ends immediately if ignition, pressure increase, or notable self-heating occurs.

• Result Interpretation
  A “pass” result is given if no ignition, flame, excessive pressure, self-heating (>3 °C difference), or mass loss (>1%) is observed. Any such occurrences lead to a “fail” classification.

• Reporting Requirements
  Test reports must reference SIST EN 13631-2:2025 and include identification of the explosive, pass/fail outcome, and details on any adverse reactions such as flame, temperature peaks, pressure changes, or color variations.

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Applications

SIST EN 13631-2:2025 plays a critical role in the safety management of explosives used in:

• Civil blasting operations – ensuring explosives are stable under elevated temperature conditions typically found in operational or storage environments.
• Transport and storage – verifying that explosives can safely endure temperature stresses without risk of premature reaction or degradation.
• Manufacturing quality control – guiding producers in verifying the thermal stability of blasting agents, boosters, and explosive substances as part of product certification.
• Regulatory compliance – helping manufacturers and users comply with EU Directive 2014/28/EU essential safety requirements related to explosives for civil use.
• Pyrotechnics and propellant industries – supporting stability testing of related energetic materials covered under complementary standards like EN 13938-1:2025.

By adhering to SIST EN 13631-2:2025, stakeholders in the explosives supply chain can minimize accidents, avoid costly product recalls, and maintain high standards of safety and reliability.

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Related Standards

• EN 13631 series – Comprehensive European standards covering different aspects of explosives for civil uses, including high explosives and boosters.
• EN 13938-1:2025 – Specifies requirements for solid gun propellants, solid rocket propellants, black powder for safety fuses, pyrotechnics, and powder cakes.
• EN 13857-1:2025 – Provides vocabulary and definitions relevant to explosives for civil uses necessary for clarity in testing and reporting.
• UN Manual of Tests and Criteria – Contains parallel thermal stability testing protocols used for transport classification and safety regulations worldwide.
• EN ISO/IEC 17025:2017 – Outlines general requirements for the competence of testing and calibration laboratories, relevant for the test execution but not mandatory under this standard.

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Keywords: SIST EN 13631-2:2025, thermal stability verification, explosives for civil uses, blasting explosives, boosters, black powder, propellants, pyrotechnics, safety testing, CEN standard, explosive stability test, transport safety, temperature controlled testing, EU Directive 2014/28/EU compliance.

Standards Content (Sample)

SLOVENSKI STANDARD
01-december-2025
Eksplozivi za civilno uporabo - Eksplozivi za miniranje, ojačevalci in eksplozivne
snovi - 4. del: Preverjanje toplotne stabilnosti
Explosives for civil uses - Explosives for blasting, boosters and explosive substances -
Part 2: Verification of thermal stability
Explosivstoffe für zivile Zwecke - Sprengstoffe, Verstärkungsladungen und Explosivstoffe
- Teil 2: Überprüfung der thermischen Stabilität
Explosifs à usage civil - Explosifs de mine, relais de détonation et substances explosives
- Partie 2 : Vérification de la stabilité thermique
Ta slovenski standard je istoveten z: EN 13631-2:2025
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 13631-2
EUROPEAN STANDARD
NORME EUROPÉENNE
October 2025
EUROPÄISCHE NORM
ICS 71.100.30 Supersedes EN 13631-2:2002
English Version
Explosives for civil uses - Explosives for blasting, boosters
and explosive substances - Part 2: Verification of thermal
stability
Explosifs à usage civil - Explosifs de mine, relais de Explosivstoffe für zivile Zwecke - Sprengstoffe,
détonation et substances explosives - Partie 2 : Verstärkungsladungen und Explosivstoffe - Teil 2:
Vérification de la stabilité thermique Überprüfung der thermischen Stabilität
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 13631-2:2025 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 . 5
6 Preparation of test sample . 6
6.1 Liquid, pasty or non-compact explosive substances . 6
6.2 Compact explosive substances . 6
7 Procedure . 6
7.1 General. 6
7.2 Test set-up and testing . 7
8 Expression of results . 7
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 13631-2:2025) 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 13631-2:2002.
EN 13631-2:2002:
a) the document title has been changed from “Explosives for civil uses — High explosives — Part 2:
Determination of thermal stability of explosives” to “Explosives for civil uses — Explosives for
blasting, boosters and explosive substances — Part 2: Verification of thermal stability”;
b) the Scope has been revised to clarify the covered and not covered explosives;
c) the normative references have been updated;
d) the terminology entry 3.1 has been removed;
e) the Clause 4 “Principle” has been added;
f) the Clause “Apparatus” has been updated and the Figure 1 has been removed;
g) the Clause “Procedure” has been revised for clarification purposes and the Figure 2 has been
removed;
h) the Clause 8 “Expression of test results” has been added;
i) the Clause “Test report” does no longer require conformity with EN ISO/IEC 17025 and the
information to be provided has been updated;
j) the Annex ZA has been updated;
k) the Bibliography has been added and lists, e.g. 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 13631 series, published under the general title Explosives for civil uses —
Explosives for blasting, boosters and explosive substances, 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 test method for the verification of the thermal stability at 75 °C of explosives
for blasting, boosters and explosive substances.
This document also applies to black powder when used for blasting.
This document also applies to solid gun propellants, solid rocket propellants, black powder used as
propellants, for safety fuse or for pyrotechnics and powder cakes as covered by EN 13938-1:2025.
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 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 EN 13857-1:2025 apply.
ISO and IEC maintain terminology databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https://www.iso.org/obp
— IEC Electropedia: available at https://www.electropedia.org
4 Principle
Knowledge on thermal stability is relevant to guarantee the safet
...