SIST EN 16701:2014

Energetic materials for Defence - Safety, vulnerability - Friability

This European Standard describes a method for assessing the deflagration to detonation transition (DDT) risk of an explosive material subjected to a mechanical threat.
Testing applies to any compact solid explosive material.

Energetische Wehrmaterialien - Sicherheit, Verwundbarkeit - Sprödigkeit

Matériaux énergétiques de défense - Sécurité, vulnérabilité - Friabilité

La présente Norme européenne décrit une méthode d'évaluation du risque de transition de la déflagration vers la détonation (TDD) d'une matière explosive soumise à une agression mécanique.
L'épreuve s’applique à toute matière explosive solide compacte.

Energetski materiali za obrambo - Varnost, ranljivost - Krhkost

Standard EN 16701 opisuje metodo za oceno tveganja prehoda iz deflagracije v detonacijo (DDT) eksplozivnega materiala, na katerega vpliva mehanska grožnja. Preskušanje se uporablja za poljuben kompakten trden eksplozivni material.

General Information

• Status: Published
• Publication Date: 04-Aug-2014
• ICS: 95.020 - Military in general
• Technical Committee: I13 - Imaginarni 13
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 07-Jul-2014
• Due Date: 11-Sep-2014
• Completion Date: 05-Aug-2014
• Ref Project: EN 16701:2014 - Energetic materials for defence - Safety, vulnerability - Friability

Overview

EN 16701:2014 - "Energetic materials for defence - Safety, vulnerability - Friability" (CEN) specifies a laboratory method to assess the risk that a compact solid explosive will undergo a deflagration-to-detonation transition (DDT) after mechanical insult. The standard defines how to generate controlled mechanical impacts, collect fragments, and measure burning behaviour in a closed vessel to characterise friability (fragmentation and burning vivacity) and DDT propensity.

Key topics and technical requirements

• Scope: Applies to compact solid explosive materials subjected to a mechanical threat (impact).
• Test principle: A cylindrical explosive specimen is projected onto a flat steel plate; fragments are collected and burned at constant volume in a closed vessel to derive the pressure–time signal P(t). The maximum derivative (dP/dt)max is used to characterise behaviour versus impact velocity (IV).
• Impact velocity range: Launcher must deliver velocities typically from about 70 m/s up to ≥200 m/s; trials progress from low speeds (<80 m/s) up through 200–250 m/s or to an IVmax where other effects dominate.
• Apparatus: Descriptions cover pneumatic or gun-propellant launchers, an impact steel plate and fragment collection tube, and a closed combustion vessel (~130 cm3) rated for high static pressure (specification in the standard).
• Measurements: Impact velocity measured at a fixed distance (±1 m/s accuracy) using optical barriers; pressure and pressure derivative inside the closed vessel recorded with an appropriate acquisition chain (referenced French standard NF T 70‑714).
• Specimen geometry: Cylindrical cores typically 18.0 ± 0.1 mm diameter and mass 9.0 ± 0.1 g (length adjusted).
• Results expressed as: (dP/dt)max vs IV curve, (dP/dt)max at 150 m/s, and the critical impact velocity (CIV) where (dP/dt)max reaches 18 MPa/ms. The standard notes the UN example threshold of 15 MPa/ms for Extremely Insensitive Detonating Substances (EIDS).

Practical applications and users

• Safety and vulnerability testing for military energetic materials and munitions.
• Classification and acceptance testing during R&D, manufacturing and procurement of explosives.
• Risk assessment for storage, handling and transport of compact solid explosives.
• Regulatory compliance and safety certification by test houses, defence labs, military safety authorities, manufacturers, and civil/military standards bodies.

Related standards

• NF T 70‑714 (referenced for closed-vessel firing practice and measurement chain specifications)
• UN testing/criteria references (e.g., 15 MPa/ms cited as an example threshold for EIDS)

EN 16701:2014 provides a standardised, repeatable framework for quantifying friability and DDT risk using measurable outputs (IV, (dP/dt)max, CIV) useful for safety classification, design iteration and regulatory reporting.

Standards Content (Sample)

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Energetski materiali za obrambo - Varnost, ranljivost - KrhkostEnergetische Wehrmaterialien - Sicherheit, Verwundbarkeit - SprödigkeitMatériaux énergétiques de défense - Sécurité, vulnérabilité - FriabilitéEnergetic materials for Defence - Safety, vulnerability - Friability95.020Vojaška tehnika. Vojaške zadeve. OrožjeMilitary engineering. Military affairs. WeaponsICS:Ta slovenski standard je istoveten z:EN 16701:2014SIST EN 16701:2014en,fr,de01-september-2014SIST EN 16701:2014SLOVENSKI
STANDARD
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 16701
May 2014 ICS 71.100.30 English Version
Energetic materials for defence - Safety, vulnerability - Friability Matériaux énergétiques de défense - Sécurité, vulnérabilité - Friabilité
Energetische Wehrmaterialien - Sicherheit, Verwundbarkeit - Sprödigkeit This European Standard was approved by CEN on 10 April 2014.
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, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre:
Avenue Marnix 17,
B-1000 Brussels © 2014 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 16701:2014 ESIST EN 16701:2014

Example of an experimental device . 11 Annex B (informative)
Description of the gun propellant device . 12 B.1 General . 12 B.2 Cartridge preparation . 12 Annex C (informative)
Example of a closed vessel . 13 Annex D (informative)
Example of a test report . 14 Annex E (informative)
Examples of results for typical Explosive Materials . 15 Bibliography . 16
...