EN 14591-4-2007 en Explosion prevention and protection in underground mines - Protective systems - Part 4 Automatic extinguishing systems for road headers (Incorporating corrigendu.pdf

1、BRITISH STANDARDBS EN 14591-4:2007Explosion prevention and protection in underground mines Protective systems Part 4: Automatic extinguishing systems for road headersICS 13.230; 73.100.99g49g50g3g38g50g51g60g44g49g42g3g58g44g55g43g50g56g55g3g37g54g44g3g51g40g53g48g44g54g54g44g50g49g3g40g59g38g40g51g

2、55g3g36g54g3g51g40g53g48g44g55g55g40g39g3g37g60g3g38g50g51g60g53g44g42g43g55g3g47g36g58Incorporating corrigendum March 2008National forewordThis British Standard is the UK implementation of EN 14591-4:2007, incorporating corrigendum March 2008.The UK participation in its preparation was entrusted to

3、 Technical Committee FSH/23, Fire precautions in industrial and chemical plant.A list of organizations represented on this committee can be obtained on request to its secretary.This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its corr

4、ect application.Compliance with a British Standard cannot confer immunity from legal obligations.BS EN 14591-4:2007Amendments/corrigenda issued since publicationDate Comments 30 November 2009 Implementation of CEN corrigendum March 2008. Text added to 4.2.1 and 7.1This British Standard was published

5、 under the authority of the Standards Policy and Strategy Committee on 31 August 2007 BSI 2009ISBN 978 0 580 62687 6EUROPEAN STANDARDNORME EUROPENNEEUROPISCHE NORMEN 14591-4July 2007ICS 13.230; 73.100.99English VersionExplosion prevention and protection in underground mines -Protective systems - Par

6、t 4: Automatic extinguishing systems forroad headersProtection contre lexplosion dans les mines souterraines -Systmes de protection - Partie 4: Installation dextinctionautomatique dexplosion pour machines attaqueponctuelleExplosionsschutz in untertgigen Bergwerken -Schutzsysteme - Teil 4: Automatisc

7、heExplosionslschanlagen fr TeilschnittmaschinenThis European Standard 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.

8、 Up-to-date lists and bibliographical references concerning such 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 translationu

9、nder the responsibility of a CEN member into its own language and 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,

10、Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, 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

11、: rue de Stassart, 36 B-1050 Brussels 2007 CEN All rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 14591-4:2007: EIncorporating corrigendum March 2008EN 14591-4:2007 (E) 2 Contents Page Foreword3 1 Scope 4 2 Normative references 4 3 Terms an

12、d definitions .4 4 General requirements5 4.1 General5 4.2 Functional requirements.5 4.2.1 General5 4.2.2 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

13、General7 5.2 Mechanical strength 7 5.3 Vibration and impact resistance 7 5.4 Maintenance-friendly design 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 electroni

14、cs.8 7.1 General8 7.2 Triggering .8 7.3 Monitoring functions .9 7.4 Status displays.9 7.5 Resistance 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) Relations

15、hip between this European Standard and the Essential Requirements of EU 94/9/EC 12 Bibliography 14 BS EN 14591-4:2007EN 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 protec

16、tion”, the secretariat of which is held by DIN. This European Standard shall be given the status of a national standard, 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. T

17、his document has been prepared under a mandate given to CEN by the European Commission and the European Free Trade Association, 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 Europe

18、an Standard consists of the following Parts: EN 15491-1, Explosion prevention and protection in underground mines Protective 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 trou

19、gh barriers EN 14591-4, Explosion prevention and protection in underground mines Protective systems Part 4: Automatic 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

20、European Standard: Austria, Belgium, Bulgaria, 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 the Un

21、ited Kingdom. BS EN 14591-4:2007EN 14591-4:2007 (E) 4 1 Scope This document lays down requirements for automatic explosion extinguishing systems for roadheader machines (selective cut heading machines) in roadheader drivages where these systems automatically detect the initial phase of a firedamp ex

22、plosion which has been initiated by the cutter head of a roadheader machine and extinguish it at the roadhead in such a way that the roadway 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 extinguish

23、ing system for roadheaders is an autonomous protective system designed in accordance with Directive 94/9/EC. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references,

24、 the latest edition of the referenced document (including any amendments) applies. EN 1127-2:2002, Explosive atmospheres Explosion prevention and protection Basic concepts and methodology for mining EN 10025 (all Parts), Hot rolled products of structural steels EN 10204, Metallic products Types of i

25、nspection documents EN 13237:2003, Potentially explosive atmospheres Terms and definitions for equipment and protective systems intended for use in potentially explosive atmospheres EN 13463-1, Non-electrical equipment for potentially explosive atmospheres Part 1: Basic method and requirements EN 60

26、068-2-6, Environmental testing Part 2: Tests Tests Fc: Vibration (sinusoidal) (IEC 60068-2-6:1995 + Corrigendum 1995) EN 60079-0, Electrical apparatus for explosive gas atmospheres Part 0: General requirements (IEC 60079-0:2004, modified) EN 61000-6-2, Electromagnetic compatibility (EMC) Part 6-2 Ge

27、neric standards Emission standard for residential, commercial and light-industrial environments (IEC 61000-6-2:2005) EN 61000-6-4, Electromagnetic compatibility (EMC) Part 6-4: Generic standards Emission standard for industrial environments (IEC 61000-6-4:1997, modified) EN 61508-1, Functional safet

28、y of electrical/electronic/programmable electronic safety-related systems Part 1: General requirements (IEC 61508-1:1998 + Corrigendum 1999) 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 automa

29、tic explosion extinguishing system assembly of equipment for the automatic detection of the beginning of an explosion and initiation of the discharge of the extinguishing agent in order, in this way, to limit the destructive effects of the explosion BS EN 14591-4:2007EN 14591-4:2007 (E) 5 3.2 HRD ex

30、tinguishing agent container device containing an explosion suppression agent that can be discharged by internal pressure NOTE HRD is the abbreviation for 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 devel

31、oping explosion. 4 General requirements 4.1 General Automatic explosion extinguishing systems for roadheaders essentially comprise the following co-ordinated components: sensors for explosion ignition detection; extinguishing agent containers for explosion fighting; control system for monitoring the

32、 individual components and their combined effect as well as the triggering of the extinguishing system (electronic control and operating unit); power supply and emergency power supply. The number and configuration of the individual components are determined by the type of machine and by the roadway

33、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 high operating reliability in accordance with the “fail-safe” principle. A high level of protection against incorrect triggering shall be ensured

34、 by means of a selective response action and minimum sensitivity to external interference factors. Appropriate protection devices are to be used to protect the components from unauthorized external interventions. If the roadheader has an automatic explosion extinguishing installation, the roadheader

35、 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 to 40 C. A degree of protection of at least IP 54 is required. An error detection system shall be used to ensure that the components are operating

36、together correctly. BS EN 14591-4:2007EN 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 the maximum response spe

37、ed 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 which are initiated in

38、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 test with a methane fla

39、me. 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 particular: distance from roadhe

40、ad; 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 controls and monitors al

41、l 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 routine. It shall have

42、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, it shall be protected

43、against interference from the supply network. BS EN 14591-4:2007EN 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 follow

44、ing 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 machine; all

45、owance 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 designed

46、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 that the

47、y 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 certificat

48、es 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.

49、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 conditions according to EN 10025. Filler metals shall meet the requirements of the appropriate European Standard and shall suit the welding method, the parent metal and the welding process. The mechanical strength shall meet the requirements of the deep mining industry. Welds and sheet-metal constructions shall be desi