EN 14973:2015

Conveyor belts for use in underground installations - Electrical and flammability safety requirements

from CEN/TC 188 N362: The revision of EN 14973 should be started to bring it in line with the revised EN 12881-1 and EN 12881-2. (see Resolution 2/2011). The experts present agree that an Annex should be added to EN 14973 to specify that Family approval for belts is possible. Resolution 2/2011: The experts present agree that general revision of EN 14973 and EN 12882 is needed due to the work being done on EN 12881-1 and EN 12881-2.

Fördergurte für die Verwendung unter Tage - Elektrische und brandtechnische Sicherheitsanforderungen

Diese Europäische Norm legt elektrische und brandtechnische Sicherheitsanforderungen an Fördergurte für den Einsatz unter Tage bei entflammbarer und nicht entflammbarer Atmosphäre fest.
Fördergurte, die unter diese Europäische Norm fallen, sind vorgesehen für den Gebrauch in Förderanlagen beim Einsatz in entflammbaren Atmosphären (Bergwerken). Der Gurt ist ein Teil der Fördereinrichtung, die eine Ausrüstung nach Gruppe I, Kategorie M2 darstellt, wie in EN 13463-1:2009, 3.2.2 definiert.
Diese Europäische Norm ist nicht auf die in EN 873 beschriebenen leichten Fördergurte anwendbar und auch nicht auf Fördergurte, die vor dem Datum der Veröffentlichung dieses Dokuments durch CEN hergestellt wurden.
Diese Europäische Norm behandelt die in A.1 aufgeführten signifikanten Gefahren.
Aufmerksamkeit wird auf die Anhänge ZA und ZB gelenkt.
ANMERKUNG Tabelle 2 gibt eine Zusammenfassung der Anforderungen dieser Europäischen Norm.

Courroies transporteuses pour usage dans les installations souterraines - Prescriptions de sécurité électrique et protection contre l'inflammation

La présente Norme Européenne spécifie des prescriptions en matière de sécurité électrique et de protection contre l’inflammation, pour les courroies transporteuses destinées à être utilisées dans des installations souterraines, en atmosphères inflammables ou non inflammables.
Les courroies transporteuses couvertes par la présente Norme européenne et destinées à être utilisées en atmosphères inflammables sont destinées aux installations de convoyeur par bandes (machines dans les mines). La courroie est un composant ou une partie d’un équipement, qui peut être incorporé dans le convoyeur, qui est lui-même un équipement du Groupe 1, Catégorie M2, tel que défini en 3.2.2 de l'EN 13463 1:2009.
La présente Norme européenne n’est pas applicable aux courroies transporteuses légères telles que décrites dans l'EN ISO 21183 1:2006, ni aux courroies transporteuses qui ont été fabriquées avant la date de publication du présent document par le CEN.
La présente Norme européenne traite des phénomènes dangereux significatifs détaillés en A.1.
L’attention est attirée sur l’Annexe ZA et l'Annexe ZB.
NOTE   Un résumé des prescriptions de la présente Norme européenne est donné au Tableau 2. Ceci est destiné à une consultation rapide uniquement.

Naprave za kontinuirni transport - Trakovi tračnih transporterjev za podzemno vgradnjo - Električne in požarnovarnostne zahteve

Ta evropski standard določa električne in požarnovarnostne zahteve za trakove tračnih transporterjev, namenjenih za uporabo pri podzemnih vgradnjah, v prisotnosti vnetljivih ali nevnetljivih atmosfer.
Trakovi tračnih transporterjev, ki jih pokriva ta evropski standard in so namenjeni za uporabo v vnetljivih atmosferah, so namenjeni za uporabo v inštalacijah trakov tračnih transporterjev (stroji v rudnikih). Trak je komponenta ali del opreme, ki ga je mogoče vgraditi v tračni transporter, ki je oprema skupine I, kategorije M2, kot je opredeljeno v točki 3.2.2 v standardu EN 13463-1:2009.
Ta evropski standard ne velja za lahke trakove tračnih transporterjev, kot je opisano v standardu EN ISO 21183-1:2006, niti za trakove tračnih transporterjev, izdelane pred datumom objave tega dokumenta s strani združenja CEN.
Ta evropski standard obravnava večje nevarnosti, opredeljene pod točko A.1. Posebna pozornost je namenjena dodatkoma ZA in ZB. OPOMBA V preglednici 2 je podan povzetek zahtev tega evropskega standarda. To je namenjeno samo za hitri pregled.

General Information

• Status: Published
• Publication Date: 17-Nov-2015
• Withdrawal Date: 30-May-2016
• ICS: 13.220.40 - Ignitability and burning behaviour of materials and products
• ICS: 53.040.10 - Conveyors
• ICS: 53.040.20 - Components for conveyors
• Technical Committee: CEN/TC 188 - Conveyor belts
• Drafting Committee: CEN/TC 188/WG 3 - Safety requirements for conveyor belting
• Current Stage: 9093 - Decision to confirm - Review Enquiry
• Start Date: 03-Oct-2021
• Completion Date: 14-Apr-2025
• Directive: 2006/42/EC - Directive 2006/42/EC of the European Parliament and of the Council of 17 May 2006 on machinery, and amending Directive 95/16/EC (recast)
• Directive: 2014/34/EU - Directive 2014/34/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 equipment and protective systems intended for use in potentially explosive atmospheres (recast)
• 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
• Mandate: M/079 - Mandate to CEN and CENELEC for standardization in the field of machines
• Mandate: M/396 - Mandate to CEN and Cenelec for standardisation in the field of machinery
• Mandate: 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 14973:2016 - Conveyor belts for use in underground installations - Electrical and flammability safety requirements

Relations

• Replaces: EN 14973:2006+A1:2008 - Conveyor belts for use in underground installations - Electrical and flammability safety requirements
• Effective Date: 25-Nov-2015
• Revised: prEN 14973 - Conveyor belts for use in underground installations - Electrical and flammability safety requirements
• Effective Date: 06-Mar-2023

Overview

EN 14973:2015 - "Conveyor belts for use in underground installations - Electrical and flammability safety requirements" is a CEN standard that specifies electrical and fire-safety requirements for conveyor belts used in underground environments (including potentially flammable atmospheres). It defines hazard assessment procedures and classifies belts into safety Classes A, B (B1/B2) and C (C1/C2) depending on access, presence of explosive atmospheres, combustible dust/materials and whether secondary safety devices are provided. The standard is a type C machinery-related standard and links to EU directives via informative annexes.

Key topics and technical requirements

• Ignition hazard assessment - Operating companies must carry out an ignition hazard assessment to determine which belt class is required; Annex A and example Annex B provide guidance.
• Classification - Three main classes:
  • Class A: general use (limited escape/access hazards).
  • Class B: potentially explosive atmosphere (B1 without secondary safety devices; B2 with devices).
  • Class C: potentially explosive atmosphere plus additional combustible dust/material or fire load (C1 without devices; C2 with devices).
• Electrical safety - Belts intended for underground use must meet electrical surface conductivity/resistance requirements (test methods referenced in EN ISO 284).
• Frictional heating - Drum friction tests (EN 1554) specify behaviour limits:
  • For B1 belts: no flame or glow and drum temperature must not exceed 450 °C.
  • For C1 belts (coal-dust environments): no flame or glow and drum temperature must not exceed 325 °C.
  • For A, B2, C2: glowing permitted but no flame in specified tests.
• Resistance to ignition and fire propagation - Requirements and test procedures (propane burner tests, double-burner, mid-scale high-energy tests). A laboratory-scale alternative (Method D) was added to allow substitution of a full-scale test for defined belt ranges.
• Marking and documentation - Marking, classification and supporting test evidence are required; Annex C suggests approval/compliance options.

Applications and who uses it

• Mining and underground operators selecting conveyor belts for shafts, galleries and tunnels.
• Conveyor-belt manufacturers and designers developing products for underground use.
• Safety engineers, risk assessors and maintenance teams responsible for fire and explosion safety.
• Certification bodies and regulators assessing compliance with EU directives for equipment in potentially explosive atmospheres.

Related standards (selection)

• EN 1554 (drum friction testing)
• EN 12881-1 / EN 12881-2 (fire simulation flammability testing)
• EN ISO 284 (electrical conductivity/resistance)
• EN ISO 22721 / EN ISO 15236-3 (belt specifications for mining)
• EN 1710 and EN 13463-1 (equipment for explosive atmospheres)

Keywords: EN 14973:2015, conveyor belts, underground installations, electrical safety, flammability, ignition hazard assessment, frictional heating, fire propagation, mining safety.

Standards Content (Sample)

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Fördergurte für die Verwendung unter Tage - Elektrische und brandtechnische SicherheitsanforderungenCourroies transporteuses pour usage dans les installations souterraines - Prescriptions de sécurité électrique et protection contre l'inflammationConveyor belts for use in underground installations - Electrical and flammability safety requirements53.040.20Deli za transporterjeComponents for conveyors13.220.40Sposobnost vžiga in obnašanje materialov in proizvodov pri gorenjuIgnitability and burning behaviour of materials and productsICS:Ta slovenski standard je istoveten z:EN 14973:2015SIST EN 14973:2016en,fr,de01-februar-2016SIST EN 14973:2016SLOVENSKI
STANDARDSIST EN 14973:2007+A1:20081DGRPHãþD

EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 14973
November
t r s w ICS
w uä r v rä s râ
s uä t t rä v r Supersedes EN
s v { y uã t r r x ªA sã t r r zEnglish Version
Conveyor belts for use in underground installations æ Electrical and flammability safety requirements Courroies transporteuses pour usage dans les installations souterraines æ Prescriptions de sécurité électrique et protection contre l 5inflammation
Fördergurte für die Verwendung unter Tage æ Elektrische und brandtechnische Sicherheitsanforderungen This European Standard was approved by CEN on
t x September
t r s wä
egulations which stipulate the conditions for giving this European Standard the status of a national standard without any alterationä Upætoædate lists and bibliographical references concerning such national standards may be obtained on application to the CENæCENELEC Management Centre or to any CEN memberä
translation under the responsibility of a CEN member into its own language and notified to the CENæCENELEC Management Centre has the same status as the official versionsä
CEN members are the national standards bodies of Austriaá Belgiumá Bulgariaá Croatiaá Cyprusá Czech Republicá Denmarká Estoniaá Finlandá Former Yugoslav Republic of Macedoniaá Franceá Germanyá Greeceá Hungaryá Icelandá Irelandá Italyá Latviaá Lithuaniaá Luxembourgá Maltaá Netherlandsá Norwayá Polandá Portugalá Romaniaá Slovakiaá Sloveniaá Spainá Swedená Switzerlandá Turkey and United Kingdomä
EUROPEAN COMMITTEE FOR STANDARDIZATION COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre:
Avenue Marnix 17,
B-1000 Brussels
t r s w CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Membersä Refä Noä EN
s v { y uã t r s w ESIST EN 14973:2016

Hazards and risk assessment . 13 SIST EN 14973:2016

Example of an ignition hazard assessment for a conveyor belt intended for use in a potentially explosive atmosphere . 15 Annex C (informative)
Suggested conveyor belt approval / compliance options . 16 Annex ZA (informative)
Relationship between this European Standard and the Essential Requirements of EU Directive 94/9/EC . 17 Annex ZB (informative)
Relationship between this European Standard and the Essential Requirements of EC Directive 2006/42/EC . 18 Bibliography . 19
A summary of the requirements of this European Standard is given in Table 2. This is intended for quick reference only. 2 Normative references The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 1554:2012, Conveyor belts — Drum friction testing EN 1710:2005+A1:2008, Equipment and components intended for use in potentially explosive atmospheres in underground mines EN 12881-1:2014, Conveyor belts — Fire simulation flammability testing — Part 1: Propane burner tests EN 12881-2, Conveyor belts — Fire simulation flammability testing — Part 2: Large-scale fire test EN 13463-1:2009, Non-electrical equipment for use in potentially explosive atmospheres — Part 1: Basic method and requirements EN 31010, Risk management — Risk assessment techniques EN ISO 284, Conveyor belts — Electrical conductivity — Specification and test method (ISO 284) EN ISO 340, Conveyor belts — Laboratory scale flammability characteristics — Requirements and test method (ISO 340) EN ISO 12100, Safety of machinery — General principles for design — Risk assessment and risk reduction (ISO 12100) EN ISO 15236-3:2007, Steel cord conveyor belts — Part 3: Special safety requirements for belts for use in underground installations (ISO 15236-3:2007) EN ISO 22721:2007, Conveyor belts — Specification for rubber- or plastics-covered conveyor belts of textile construction for underground mining (ISO 22721:2007) SIST EN 14973:2016

u r r M Àä 6 Frictional heating 6.1 Conveyor belts intended for general use in underground installations (Class A), and for use in hazardous installations where secondary safety devices are present (Classes B2 and C2) When tested in accordance with EN 1554:2012, Method B2, or Method B1 if the use of Method B2 is impossible, e.g. when testing steel cord conveyor belts, conveyor belts intended for use in these applications shall exhibit no flame whatsoever, although glowing is permissible. No requirements are included for the maximum temperature of the drum. 6.2 Conveyor belts intended for use in installations where there is a potentially flammable atmosphere and where secondary safety devices are not present (Class B1) When tested in accordance with EN 1554:2012, Method B2, or Method B1 if the use of Method B2 is impossible, e.g. when testing steel cord conveyor belts, conveyor belts intended for use in flammable atmospheres shall exhibit no flame or glow whatsoever and at no time shall the temperature of the drum exceed 450 °C. NOTE If the intrinsic properties of the conveyor belt alone are to be used to give a safe situation in the presence of flammable atmospheres, it is important to limit the temperature of the drum and not to allow glow. The temperature of 450 °C was chosen as being adequately below the ignition temperature of methane-air mixtures when in the presence of a hot drum surface. SIST EN 14973:2016
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