CEN/TS 17274:2018

Nanotechnologies - Guidelines for determining protocols for the explosivity and flammability of powders containing nano-objects (for transport, handling and storage)

This document provides protocol guidelines for determining explosivity and flammability characteristics of powders containing manufactured nano-objects. These explosivity and flammability characteristics are needed for safety data sheets for safe storage, handling and transport of any powder.
In particular, this document will provide protocol guidelines concerning:
-   the determination of flammability characteristics of powders containing nano-objects with regard to sensitivity to ignition sources;
-   the ability of a powder containing nano-objects to generate an explosive atmosphere and the assessment of its explosion characteristics.
This document is not suitable for use with recognized explosives, such as gunpowder and dynamite, explosives which do not require oxygen for combustion, or substances or mixtures of substances which may under some circumstances behave in a similar manner. Where any doubt exists about the existence of hazard due to explosive properties, it is best to seek expert advice.

Nanotechnologien - Leitfaden für Protokolle zur Bestimmung des Brand- und Explosionsverhaltens von Pulvern, die Nano-Objekte beinhalten (für Transport, Handhabung und Lagerung)

Dieses Dokument stellt einen Leitfaden für Protokolle zur Bestimmung des Explosions- und Brandverhaltens von Pulvern, die industriell hergestellte Nanoobjekte enthalten, bereit. Diese Informationen zum Explosions- und Brandverhalten werden für Sicherheitsdatenblätter zur sicheren Lagerung und zum sicheren Umschlag und Transport aller Arten von Pulvern benötigt.
Im Besonderen stellt dieses Dokument einen Leitfaden für Protokolle zu Folgendem zur Verfügung:
-   Bestimmung des Brandverhaltens von Pulvern, die Nanoobjekte enthalten, im Hinblick auf die Sensibilität gegenüber Zündquellen;
-   Fähigkeit eines Pulvers, das Nanoobjekte enthält, eine explosionsfähige Atmosphäre zu erzeugen, und Beurteilung seines Explosionsverhaltens.
Dieses Dokument ist nicht für die Anwendung auf anerkannte Explosivstoffe, wie z. B. Schießpulver und Dynamit, auf Explosivstoffe, die zur Verbrennung keinen Sauerstoff benötigen, oder auf Substanzen oder Stoffgemische, die sich unter bestimmten Umständen ähnlich wie diese verhalten, geeignet. Bestehen Zweifel über das Vorliegen einer Gefährdung aufgrund von Explosionsfähigkeit, ist es ratsam, sich an einen Sachverständigen zu wenden.

Nanotechnologies - Lignes directrices sur les protocoles permettant de déterminer les caractéristiques d’explosivité et d’inflammabilité des poudres contenant des nano-objets (en vue de leur transport, manipulation et stockage)

Le présent document spécifie des lignes directrices sur les protocoles permettant de déterminer les caractéristiques d’explosivité et d’inflammabilité des poudres contenant des nano-objets manufacturés. Ces caractéristiques d’explosivité et d’inflammabilité sont nécessaires pour établir les fiches de données de sécurité utiles pour la sécurité du stockage, la mise en oeuvre et le transport des poudres.
Le présent document fournit notamment des lignes directrices sur les protocoles concernant :
-   la détermination des caractéristiques d’inflammabilité des poudres contenant des nano-objets au regard de leur sensibilité aux sources d’inflammation ;
-   la capacité d’une poudre contenant des nano-objets à générer une atmosphère explosive et l’évaluation des caractéristiques d’explosion de cette poudre.
Le présent document ne s’applique ni aux explosifs reconnus tels que la poudre noire et la dynamite, ni aux explosifs dont la combustion ne nécessite pas la présence d’oxygène, ni aux substances ou mélanges de substances susceptibles d’avoir un comportement analogue dans certaines circonstances. En cas de doute sur l’existence d’un danger dû aux propriétés explosives, il est fortement recommandé de solliciter l’avis d’un expert.

Nanotehnologija - Smernice za določanje protokolov za eksplozivnost in vnetljivost praškov, ki vsebujejo nanomateriale (za transport, ravnanje z njimi in shranjevanje)

Ta dokument vsebuje smernice za določanje protokolov za lastnosti eksplozivnosti in vnetljivosti praškov, ki vsebujejo proizvedene nanomateriale. Te lastnosti eksplozivnosti in vnetljivosti so potrebne za varnostne tehnične liste pri varnem skladiščenju, rokovanju in prevozu prahu.
Ta dokument bo zlasti zagotovil smernice za protokole glede:
– določanja lastnosti vnetljivosti praškov, ki vsebujejo nanomateriale, glede na občutljivost virov vžiga;
– zmožnost nanomaterialov, ki vsebujejo prašek, da ustvarijo eksplozivno okolje, in oceno lastnosti eksplozivnosti.
Ta dokument ni primeren za uporabo z znanimi eksplozivi, kot sta smodnik in dinamit, z eksplozivnimi materiali, ki za zgorevanje ne potrebujejo kisika, s snovmi ali mešanicami snovi, ki lahko v nekaterih okoliščinah delujejo na podoben način. Kadar obstaja kakršen koli dvom o obstoju nevarnosti zaradi eksplozivnih lastnosti, je najbolje poiskati nasvet strokovnjaka.

General Information

• Status: Published
• Publication Date: 11-Dec-2018
• ICS: 07.120 - Nanotechnologies
• Technical Committee: CEN/TC 352 - Nanotechnologies
• Drafting Committee: CEN/TC 352/WG 3 - Health, safety and environmental aspects
• Current Stage: 9093 - Decision to confirm - Review Enquiry
• Completion Date: 14-Sep-2022
• Mandate: M/461 - Mandate addressed to CEN, CENELEC and ETSI for Standardization activities regarding Nanotechnologies and Nanomaterials
• Ref Project: SIST-TS CEN/TS 17274:2019 - Nanotechnologies - Guidelines for determining protocols for the explosivity and flammability of powders containing nano-objects (for transport, handling and storage)

Standards Content (Sample)

SLOVENSKI STANDARD
01-marec-2019
1DQRWHKQRORJLMD6PHUQLFH]DGRORþDQMHSURWRNRORY]DHNVSOR]LYQRVWLQ
YQHWOMLYRVWSUDãNRYNLYVHEXMHMRQDQRPDWHULDOH]DWUDQVSRUWUDYQDQMH]QMLPLLQ
VKUDQMHYDQMH
Nanotechnologies - Guidelines for determining protocols for the explosivity and
flammability of powders containing nano-objects (for transport, handling and storage)
Nanotechnologien - Leitfaden für Protokolle zur Bestimmung des Brand- und
Explosionsverhaltens von Pulvern, die Nano-Objekte beinhalten (für Transport,
Handhabung und Lagerung)
Nanotechnologies - Lignes directrices pour la détermination de protocoles pour
l’explosivité et l’inflammabilité de poudre contenant des nano-objets (pour le transport, la
manipulation et le stockage) central
Ta slovenski standard je istoveten z: CEN/TS 17274:2018
ICS:
07.120 Nanotehnologije Nanotechnologies
13.220.40 Sposobnost vžiga in Ignitability and burning
obnašanje materialov in behaviour of materials and
proizvodov pri gorenju products
13.230 Varstvo pred eksplozijo Explosion protection
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

CEN/TS 17274
TECHNICAL SPECIFICATION
SPÉCIFICATION TECHNIQUE
December 2018
TECHNISCHE SPEZIFIKATION
ICS 07.120
English Version
Nanotechnologies - Guidelines for determining protocols
for the explosivity and flammability of powders containing
nano-objects (for transport, handling and storage)
Nanotechnologies - Lignes directrices sur les Nanotechnologien - Leitfaden für Protokolle zur
protocoles permettant de déterminer les Bestimmung des Brand- und Explosionsverhaltens von
caractéristiques d'explosivité et d'inflammabilité des Pulvern, die Nano-Objekte beinhalten (für Transport,
poudres contenant des nano-objets (en vue de leur Handhabung und Lagerung)
transport, manipulation et stockage)
This Technical Specification (CEN/TS) was approved by CEN on 28 September 2018 for provisional application.

The period of validity of this CEN/TS is limited initially to three years. After two years the members of CEN will be requested to
submit their comments, particularly on the question whether the CEN/TS can be converted into a European Standard.

CEN members are required to announce the existence of this CEN/TS in the same way as for an EN and to make the CEN/TS
available promptly at national level in an appropriate form. It is permissible to keep conflicting national standards in force (in
parallel to the CEN/TS) until the final decision about the possible conversion of the CEN/TS into an EN is reached.

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, Serbia, 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: Rue de la Science 23, B-1040 Brussels
© 2018 CEN All rights of exploitation in any form and by any means reserved Ref. No. CEN/TS 17274:2018 E
worldwide for CEN national Members.

Contents Page
European foreword . 3
1 Scope . 4
2 Normative references . 4
3 Terms and definitions . 4
4 Safe handling of powders containing nano-objects . 7
5 Preparation and characterization of samples . 7
5.1 Receipt of sample . 7
5.2 Characterization of the sample . 7
5.3 Preparation of sample . 8
6 Flammability characteristics - Test methods to characterize the sensitivity to ignition
sources . 8
6.1 Test for pyrophoricity of a powder containing nano-objects . 8
6.2 Flammability characteristics in layers and accumulations . 9
6.3 Flammability characteristics in clouds . 12
7 Test methods for the determination of explosion characteristics . 13
7.1 Explosivity . 13
7.2 Determination of Minimum Ignition Energy (MIE) . 15
7.3 Determination of explosion characteristics . 15
8 Test report . 18
Annex A (informative) Figures of test equipment . 20
Annex B (informative) Example of test report for the explosivity of aluminum nanoparticles
................................................................................................................................................................... 29
Bibliography . 31

European foreword
This document (CEN/TS 17274:2018) has been prepared by Technical Committee CEN/TC 352
"Nanotechnologies", the secretariat of which is held by AFNOR.
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 has been prepared under a mandate given to CEN by the European Commission and the
European Free Trade Association.
According to the CEN/CENELEC Internal Regulations, the national standards organisations of the
following countries are bound to announce this Technical Specification: 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, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Turkey and the United Kingdom.
1 Scope
This document provides protocol guidelines for determining explosivity and flammability characteristics
of powders containing manufactured nano-objects. These explosivity and flammability characteristics
are needed for safety data sheets for safe storage, handling and transport of any powder.
In particular, this document will provide protocol guidelines concerning:
— the determination of flammability characteristics of powders containing nano-objects with regard to
sensitivity to ignition sources;
— the ability of a powder containing nano-objects to generate an explosive atmosphere and the
assessment of its explosion characteristics.
This document is not suitable for use with recognized explosives, such as gunpowder and dynamite,
explosives which do not require oxygen for combustion, or substances or mixtures of substances which
may under some circumstances behave in a similar manner. Where any doubt exists about the existence
of hazard due to explosive properties, it is best to seek expert advice.
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 14034-1:2004+A1:2011, Determination of explosion characteristics of dust clouds — Part 1:
Determination of the maximum explosion pressure p of dust clouds
max
EN 14034-2:2006+A1:2011, Determination of explosion characteristics of dust clouds — Part 2:
Determination of the maximum rate of explosion pressure rise (dp/dt) of dust clouds
max
EN 14034-3:2006+A1:2011, Determination of explosion characteristics of dust clouds — Part 3:
Determination of the lower explosion limit LEL of dust clouds
EN 14034-4:2004+A1:2011, Determination of explosion characteristics of dust clouds — Part 4:
Determination of the limiting oxygen concentration LOC of dust clouds
EN ISO/IEC 80079-20-2:2016, Explosive atmospheres — Part 20-2: Material characteristics —
Combustible dusts test methods (ISO/IEC 80079-20-2:2016)
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
• IEC Electropedia: available at http://www.electropedia.org/
• ISO Online browsing platform: available at http://www.iso.org/obp
3.1
powder
assembly of discrete particles usually less than 1 mm in size
[SOURCE: EN ISO 3252:2000, 1001]
3.2
nano-object
discrete piece of material with one, two or three external dimensions in the nanoscale
Note 1 to entry: The second and third external dimensions are orthogonal to the first dimension and to each
other.
[SOURCE: CEN ISO/TS 80004-1:2015, 2.5]
3.3
powder containing nano-objects
powder containing a specific relative amount of nano-objects in number, or displaying a specific surface
area per volume, above a specific threshold value
3.4
smouldering temperature
describes the flammability behaviour of a flat dust layer on a hot surface. It is defined as the lowest
temperature of a heated, free-standing surface which is capable of igniting a powder containing
nano-objects
3.5
cloud
solids dispersed in a gaseous phase
3.6
flammable powder containing nano-objects
combustible powder containing nano-objects which ignites and burns, under effective ignition sources
(see Clause 6)
Note 1 to entry: For the purpose of this document, the flammability characteristics of a powder containing
nano-objects will be viewed as its sensitivity to thermal ignition sources.
3.7
pyrophoric solid
solid substance or mixture which, even in small quantities, is liable to ignite after coming into contact
with air at ambient conditions.
Note 1 to entry: For the purpose of this document, pyrophoric powder containing nano-objects are considered to
be flammable and may yield explosive atmospheres.
3.8
combustible powder
powder able to undergo an exothermic oxidation reaction with air when ignited
3.9
explosive atmosphere containing nano-objects
combustible powder containing nano-objects which may form an explosive mixture with air at
atmospheric conditions
3.10
explosivity of an atmosphere containing nano-objects
aptitude of an explosive atmosphere containing nano-objects to explode.
Note 1 to entry: For the purpose of this document, the explosivity of a combustible powder will reside in its
ability to form an explosive atmosphere in which a combustion reaction can propagate
3.11 Flammability characteristics
3.11.1
minimum ignition temperature (MIT) in layer of a powder containing nano-objects
lowest temperature of a hot surface at which ignition occurs in air in a layer of combustible powder
containing nano-objects under specified test conditions
3.11.2
minimum ignition temperature (MIT) in cloud of a powder containing nano-objects
lowest temperature of a hot surface on which the most ignitable mixture of dispersed combustible nano-
objects and air is ignited under specified test conditions
3.11.3
self-ignition temperature of accumulations of powders containing nano-objects
highest temperature of a given volume of an accumulation of a powder containing nano-objects which
does not ignite
3.12 Explosion characteristics
3.12.1
minimum ignition energy (MIE) of an atmosphere containing nano-objects
smallest electrical energy stored in a capacitor, which is sufficient enough to ignite an explosive mixture
in its most critical composition when discharged via a spark gap
3.12.2
lower explosion limit
LEL
highest concentration at which an explosion is not detected in three successive tests (see Clause 7)
3.12.3
initial pressure
P
i
pressure inside the explosion vessel at the moment of ignition
3.12.4
initial air temperature
T
i
temperature inside the explosion vessel at the moment of ignition
3.12.5
explosion pressure
p
ex
highest over pressure relative to the initial pressure occurring in a closed vessel during the explosion of
a specific mixture of flammable powder containing nano-objects with air or air and inert substances
determined under specified test conditions
3.12.6
maximum explosion pressure
p
max
maximum explosion overpressure (pressure above initial pressure conditions) during explosions of all
explosive atmospheres in the explosion range of a combustible substance in a closed vessel under
specified test conditions and ambient atmospheric condition
...