DIN EN 14591-4-2007 Explosion prevention and protection in underground mines - nProtective systems - nPart 4 Automatic extinguishing systems for road headers nEnglish version EN 14.pdf

1、September 2007DEUTSCHE NORM English price group 9No part of this standard may be reproduced without prior permission ofDIN Deutsches Institut fr Normung e. V., Berlin. Beuth Verlag GmbH, 10772 Berlin, Germany,has the exclusive right of sale for German Standards (DIN-Normen).ICS 13.230; 73.100.99!$I3

2、Y“1381654www.din.deDDIN EN 14591-4Explosion prevention and protection in underground mines Protective systems Part 4: Automatic extinguishing systems for road headersEnglish version of DIN EN 14591-4:2007-09Explosionsschutz in untertgigen Bergwerken Schutzsysteme Teil 4: Automatische Explosionslscha

3、nlagen fr TeilschnittmaschinenEnglische Fassung DIN EN 14591-4:2007-09www.beuth.deDocument comprises 16 pages 11.07DIN EN 14591-4:2007-09 2 Start of validity This standard is valid from 01 September 2007. National foreword This standard includes safety requirements. This standard has been prepared b

4、y Technical Committee CEN/TC 305 “Potentially explosive atmos-pheres Explosion prevention and protection” (Secretariat: DIN, Germany), Working Group 5 “Equipment and protective systems for mining”. The responsible German body involved in its preparation was the Normenausschuss Bergbau (Mining Standa

5、rds Committee), Technical Committee Explosionsschutz. DIN EN 14591 Explosion prevention and protection in underground mines Protective systems consists of the following Parts: Part 1: 2-bar explosion proof ventilation Part 2: Passive water trough barriers Part 4: Automatic extinguishing systems for

6、road headers Based on Article 95 of the EC Treaty, 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 regulates explosion

7、 protection in underground and above ground mining. EUROPEAN STANDARDNORME EUROPENNEEUROPISCHE NORMEN 14591-4July 2007ICS 13.230; 73.100.99English VersionExplosion prevention and protection in underground mines -Protective systems - Part 4: Automatic extinguishing systems forroad headersProtection c

8、ontre lexplosion dans les mines souterraines -Systmes de protection - Partie 4: Installation dextinctionautomatique dexplosion pour machines attaqueponctuelleExplosionsschutz in untertgigen Bergwerken -Schutzsysteme - Teil 4: AutomatischeExplosionslschanlagen fr TeilschnittmaschinenThis European Sta

9、ndard was approved by CEN on 9 June 2007.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

10、 nationalstandards may be obtained on application to the CEN 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 translationunder the responsibility of a CEN member into its own language an

11、d notified to the CEN Management Centre has the same status as theofficial versions.CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland,France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg,

12、 Malta, Netherlands, Norway, Poland, Portugal,Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMIT EUROPEN DE NORMALISATIONEUROPISCHES KOMITEE FR NORMUNGManagement Centre: rue de Stassart, 36 B-1050 Brussels 2007 CEN All rights of exp

13、loitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 14591-4:2007: EEN 14591-4:2007 (E) 2 Contents Page Foreword3 1 Scope 4 2 Normative references 4 3 Terms and definitions .4 4 General requirements5 4.1 General5 4.2 Functional requirements.5 4.2.1 General5 4

14、.2.2 Sensors.6 4.2.3 Extinguishing agent containers6 4.2.4 Electronic control and discharge unit .6 4.2.5 Power supply and emergency power supply6 4.3 Other requirements7 5 Special requirements 7 5.1 General7 5.2 Mechanical strength 7 5.3 Vibration and impact resistance 7 5.4 Maintenance-friendly de

15、sign 8 6 Requirements for sensor systems.8 6.1 General8 6.2 Testing and monitoring.8 6.3 Resistance to interference/electromagnetic compatibility (EMC) 8 7 Requirements for signal-processing electronics.8 7.1 General8 7.2 Triggering .8 7.3 Monitoring functions .9 7.4 Status displays.9 7.5 Resistance

16、 to interference/electromagnetic compatibility (EMC) 9 8 Extinguishing system9 8.1 General9 8.2 Extinguishing agent containers9 9 Marking .10 10 Information for use 10 Annex ZA (informative) Relationship between this European Standard and the Essential Requirements of EU 94/9/EC 12 Bibliography 14 E

17、N 14591-4:2007 (E) 3 Foreword This document (EN 14591-4:2007) has been prepared by Technical Committee CEN/TC 305 “Potentially explosive atmospheres - Explosion prevention and protection”, the secretariat of which is held by DIN. This European Standard shall be given the status of a national standar

18、d, either by publication of an identical text or by endorsement, at the latest by January 2008, and conflicting national standards shall be withdrawn at the latest by January 2008. This document has been prepared under a mandate given to CEN by the European Commission and the European Free Trade Ass

19、ociation, and supports essential requirements of EU Directives. For relationship with EU Directives, see informative Annex ZA, which is an integral part of this document. This European Standard consists of the following Parts: EN 15491-1, Explosion prevention and protection in underground mines Prot

20、ective systems Part 1: 2-bar explosion proof ventilation structures EN 15491-2, Explosion prevention and protection in underground mines Protective systems Part 2: Passive water trough barriers EN 14591-4, Explosion prevention and protection in underground mines Protective systems Part 4: Automatic

21、extinguishing systems for road headers According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Gre

22、ece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. EN 14591-4:2007 (E) 4 1 Scope This document lays down requirements for automatic explosion extinguishing

23、 systems for roadheader machines (selective cut heading machines) in roadheader drivages where these systems automatically detect the initial phase of a firedamp explosion which has been initiated by the cutter head of a roadheader machine and extinguish it at the roadhead in such a way that the roa

24、dway drivage team is not put at risk. This document does not lay down any requirements for the fighting of fires at the roadhead. The automatic explosion extinguishing system for roadheaders is an autonomous protective system designed in accordance with Directive 94/9/EC. 2 Normative references The

25、following referenced documents are indispensable for the application 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 1127-2:2002, Explosive atmospheres Explosion preve

26、ntion and protection Basic concepts and methodology for mining EN 10025 (all Parts), Hot rolled products of structural steels EN 10204, Metallic products Types of inspection documents EN 13237:2003, Potentially explosive atmospheres Terms and definitions for equipment and protective systems intended

27、 for use in potentially explosive atmospheres EN 13463-1, Non-electrical equipment for potentially explosive atmospheres Part 1: Basic method and requirements EN 60068-2-6, Environmental testing Part 2: Tests Tests Fc: Vibration (sinusoidal) (IEC 60068-2-6:1995 + Corrigendum 1995) EN 60079-0, Electr

28、ical apparatus for explosive gas atmospheres Part 0: General requirements (IEC 60079-0:2004, modified) EN 61000-6-2, Electromagnetic compatibility (EMC) Part 6-2 Generic standards Emission standard for residential, commercial and light-industrial environments (IEC 61000-6-2:2005) EN 61000-6-4, Elect

29、romagnetic compatibility (EMC) Part 6-4: Generic standards Emission standard for industrial environments (IEC 61000-6-4:1997, modified) EN 61508-1, Functional safety of electrical/electronic/programmable electronic safety-related systems Part 1: General requirements (IEC 61508-1:1998 + Corrigendum 1

30、999) 3 Terms and definitions For the purposes of this document, the terms and definitions given in EN 1127-2:2002, EN 13237:2003 and the following apply. 3.1 automatic explosion extinguishing system assembly of equipment for the automatic detection of the beginning of an explosion and initiation of

31、the discharge of the extinguishing agent in order, in this way, to limit the destructive effects of the explosion EN 14591-4:2007 (E) 5 3.2 HRD extinguishing agent container device containing an explosion suppression agent that can be discharged by internal pressure NOTE HRD is the abbreviation for

32、High Rate Discharge 3.3 sensor device that is triggered by changes in one or more parameters, e.g. temperature and/or radiation, caused by a developing explosion. 4 General requirements 4.1 General Automatic explosion extinguishing systems for roadheaders essentially comprise the following co-ordina

33、ted components: sensors for explosion ignition detection; extinguishing agent containers for explosion fighting; control system for monitoring the individual components and their combined effect as well as the triggering of the extinguishing system (electronic control and operating unit); power supp

34、ly and emergency power supply. The number and configuration of the individual components are determined by the type of machine and by the roadway cross-section to be protected. EN 13463-1 and EN 60079-0 shall be applied. 4.2 Functional requirements 4.2.1 General All components are to be designed for

35、 high operating reliability in accordance with the “fail-safe” principle. A high level of protection against incorrect triggering shall be ensured by means of a selective response action and minimum sensitivity to external interference factors. Appropriate protection devices are to be used to protec

36、t the components from unauthorized external interventions. If the roadheader has an automatic explosion extinguishing installation, the roadheader shall be equipped with a compulsory interlock. All electrical equipment shall be of class M1. The system is designed for an ambient temperature of 20 C t

37、o 40 C. A degree of protection of at least IP 54 is required. EN 14591-4:2007 (E) 6 4.2.2 Sensors Explosion-detection sensors shall operate on the basis of one of the physical quantities related to the event of an explosion (e.g. type of flame, radiation). In this respect, full use shall be made of

38、the maximum response speed and sensitivity. The monitoring range of the detection sensors shall be fixed in such a way that the system only detects those events that have to be controlled. The events to be detected are explosions that have been caused by the cutter head of the roadheader machine and

39、 which are initiated in the vicinity of the machine, but not fires occurring outside the cutting zone. The functional reliability of the sensors shall not be impaired by local factors (dust, water/mist, construction materials, etc.). The function of the sensors shall be proven by means of a function

40、 test with a methane flame. 4.2.3 Extinguishing agent containers The discharge speed and total discharge time of the extinguishing agent containers have to be harmonized to the geometrical conditions of the roadhead. In this respect, the following parameters have to be taken into account in particul

41、ar: distance from roadhead; radial dimensions of roadway cross-section; direction of discharge relative to the cutter-arm axis. 4.2.4 Electronic control and discharge unit It shall be possible to connect at least 2 sensors to the electronic control and discharge unit. The control and discharge unit

42、controls and monitors all the electrical signals relating to the functions and safety of the systems, such as: the power supply; all the connected sensors; the storage of important system data in non-volatile memory modules; the display and operating elements; the ignition system; the automatic test

43、 routine. It shall have a data transmission interface to the remote monitoring unit. 4.2.5 Power supply and emergency power supply The power supply shall be designed as an emergency power supply for an operating period of at least 24 h with automatic changeover. In order to prevent spurious tripping

44、, it shall be protected against interference from the supply network. EN 14591-4:2007 (E) 7 4.3 Other requirements The manner in which the components of the extinguishing system are installed on the roadheader and/or incorporated into the technical equipment of the machine shall take account of the

45、following factors: mechanical loading due to impact and vibration stress; minimum disruption of the normal working sequence with regard to line-of-sight obstruction, restriction of working zone, e.g. when back-cutting the face, and access to the roadhead area and to the vicinity of roadheader machin

46、e; allowance for mechanical equipment such as water sprays, scaffolds and mobile platforms; sufficient access for repair and maintenance work; maintenance-friendly design for routine maintenance and inspection. 5 Special requirements 5.1 General Automatic explosion extinguishing systems shall be des

47、igned so that they do not affect the performance or mode of operation of the roadheader. Their component parts shall not impede the cutting action (e.g. back-cutting of arches, loading, collision with loading device) or block the operators line of sight. Components shall be designed in such a way th

48、at they can be replaced at the workplace, provided that this does not conflict with safety requirements. 5.2 Mechanical strength All machine and sheet-metal parts, including all strengthening and stiffening members, are to be constructed from steel which meets the requirements of EN 10025. Test cert

49、ificates shall be issued. When designing and manufacturing welded components, care shall be taken to ensure that notching and stress concentrations are avoided and are neutralized by appropriate measures, e.g. heat treatment and stress-free annealing. As a minimum requirement, an inspection certificate 3.1 according to EN 10204 shall be issued when using sheet and wide flats of high yield strength structural steels in the quenched and tempered or precipitation hardened