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EN 14034-3:2006

(Main)

Determination of explosion characteristics of dust clouds - Part 3: Determination of the lower explosion limit LEL of dust clouds

Determination of explosion characteristics of dust clouds - Part 3: Determination of the lower explosion limit LEL of dust clouds

This standard describes a test method for the determination of the lower explosion limit of dust clouds in a closed vessel under defined initial conditions of pressure and temperature.
This method is not suitable for use with recognised explosives, like gunpowder and dynamite, explosives which do not require oxygen for combustion, pyrophoric substances, 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, expert advice should be sought.

Bestimmung der Explosionskenngrößen von Staub/Luft-Gemischen - Teil 3: Bestimmung der unteren Explosionsgrenze UEG von Staub/Luft-Gemischen

Diese Norm legt ein Prüfverfahren fest für die Bestimmung der unteren Explosionsgrenze von Staubwolken in
einem geschlossenen Behälter unter definierten Anfangsbedingungen von Druck und Temperatur.
Dieses Verfahren ist nicht geeignet für Sprengstoffe, wie Schießpulver und Dynamit sowie Stoffe, die ohne
Sauerstoff verbrennen, pyrophore Stoffe oder Stoffe bzw. Stoffgemische, die sich unter bestimmten
Umständen ähnlich verhalten. Wenn Zweifel über eventuell vorhandene Gefährdungen durch die
Explosionswirkung bestehen, sollten Fachleute zu Rate gezogen werden.

Détermination des caractéristiques d'explosion des nuages de poussière - Partie 3: Détermination de la limite inférieure d'explosivité LIE des nuages de poussière

La présente Norme spécifie une méthode d’essai pour déterminer la limite inférieure d’explosivité des nuages de
poussière dans un récipient fermé, dans des conditions initiales de pression et de températures définies.
Cette méthode ne convient pas aux explosifs reconnus comme tels, comme la poudre et la dynamite, aux explosifs
dont la combustion ne nécessite pas d’oxygène, aux substances pyrophoriques ou aux substances et mélanges de
substances pouvant, dans certaines circonstances, se comporter de manière similaire. Lorsqu’il existe un doute sur
l’existence d’un phénomène dangereux en raison de propriétés explosives, il convient de faire appel à l’avis
d’experts.

Ugotavljanje eksplozijskih značilnosti oblakov prahu – 3. del: Ugotavljanje spodnje meje eksplozivnosti SME oblakov prahu

General Information

Status
Withdrawn
Publication Date
23-May-2006
Withdrawal Date
11-Jan-2011
ICS
13.230 - Explosion protection
Technical Committee
CEN/TC 305 - Potentially explosive atmospheres - Explosion prevention and protection
Drafting Committee
CEN/TC 305/WG 1 - Test methods for determining the flammability characteristics of substances (provisional title)
Current Stage
9960 - Withdrawal effective - Withdrawal
Start Date
12-Jan-2011
Completion Date
12-Jan-2011
Directive
94/9/EC - Directive 94/9/EC of the European Parliament and the Council of 23 March 1994 on the approximation of the laws of the Member States concerning equipment and protective systems intended for use in potentially explosive atmospheres
98/37/EC - Machinery
Mandate
M/079 - Mandate to CEN and CENELEC for standardization in the field of machines
M/BC/CEN/92/46 - Standardization mandate assigned to CEN/CENELEC concerning equipment and protective systems intended for use in potentially explosive atmospheres
Ref Project
SIST EN 14034-3:2006 - Determination of explosion characteristics of dust clouds - Part 3: Determination of the lower explosion limit LEL of dust clouds

Relations

Merged Into
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
Effective Date
19-Jan-2023

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2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Determination of explosion characteristics of dust clouds - Part 3: Determination of the lower explosion limit LEL of dust cloudsDétermination des caractéristiques d'explosion des nuages de poussiere - Partie 3: Détermination de la limite inférieure d'explosivité LIE des nuages de poussiereBestimmung der Explosionskenngrößen von Staub/Luft-Gemischen - Teil 3: Bestimmung der unteren Explosionsgrenze UEG von Staub/Luft-GemischenTa slovenski standard je istoveten z:EN 14034-3:2006SIST EN 14034-3:2006en13.230ICS:SLOVENSKI
STANDARDSIST EN 14034-3:200601-september-2006







EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 14034-3May 2006ICS 13.230 English VersionDetermination of explosion characteristics of dust clouds - Part3: Determination of the lower explosion limit LEL of dust cloudsDétermination des caractéristiques d'explosion des nuagesde poussière - Partie 3: Détermination de la limite inférieured'explosivité LIE des nuages de poussièreBestimmung der Explosionskenngrößen von Staub/Luft-Gemischen - Teil 3: Bestimmung der unterenExplosionsgrenze UEG von Staub/Luft-GemischenThis European Standard was approved by CEN on 20 April 2006.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such nationalstandards may be obtained on application to the Central Secretariat or to any CEN member.This European Standard exists in three official versions (English, French, German). A version in any other language made by translationunder the responsibility of a CEN member into its own language and notified to the Central Secretariat has the same status as the officialversions.CEN members are the national standards bodies of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France,Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania,Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMITÉ EUROPÉEN DE NORMALISATIONEUROPÄISCHES KOMITEE FÜR NORMUNGManagement Centre: rue de Stassart, 36
B-1050 Brussels© 2006 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 14034-3:2006: E



EN 14034-3:2006 (E) 2 Contents Page Foreword.4 Introduction.5 1 Scope.6 2 Normative references.6 3 Terms and definitions.6 4 Test apparatus.7 4.1 General.7 4.2 Explosion vessel.7 4.3 Dust dispersion system (dust container, fast acting valve, connecting tube, dust disperser).9 4.4 Ignition source.12 4.5 Control unit.12 4.6 Pressure measuring system.12 5 Dust sample.12 6 Test procedure.12 7 Calibration and verification.14 7.1 Calibration.
...

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