1、BRITISH STANDARD BS EN 14591-1:2004 Explosion prevention and protection in underground mines Protective systems Part 1: 2-bar explosion proof ventilation structure The European Standard EN 14591-1:2004 has the status of a British Standard ICS 13.230; 73.100.20 Licensed Copy: Wang Bin, na, Thu Sep 01
2、 09:03:49 BST 2005, Uncontrolled Copy, (c) BSIBS EN 14591-1:2004 This British Standard was published under the authority of the Standards Policy and Strategy Committee on 27 June 2005 BSI 27 June 2005 ISBN 0 580 46127 0 National foreword This British Standard is the official English language version
3、 of EN 14591-1:2004. The UK participation in its preparation was entrusted to Technical Committee FSH/23, Fire precautions in industrial and chemical plant, which has the responsibility to: A list of organizations represented on this committee can be obtained on request to its secretary. Cross-refer
4、ences The British Standards which implement international or European publications referred to in this document may be found in the BSI Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Search” facility of the BSI Electronic Catalogue or of British
5、 Standards Online. This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. aid enquirers to understand the text; present t
6、o the responsible international/European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; monitor related international and European developments and promulgate them in the UK. Summary of pages This document comprises a front cover, an insid
7、e front cover, the EN title page, pages 2 to 15 and a back cover. The BSI copyright notice displayed in this document indicates when the document was last issued. Amendments issued since publication Amd. No. Date Comments Licensed Copy: Wang Bin, na, Thu Sep 01 09:03:49 BST 2005, Uncontrolled Copy,
8、(c) BSIEUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 14591-1 September 2004 ICS 13.230; 73.100.20 English version Explosion prevention and protection in underground mines - Protective systems - Part 1: 2-bar explosion proof ventilation structure Protection contre lexplosion dans les mines sou
9、terraines - Systmes de protection - Partie 1 : Sas darage rsistant 2 bar Explosionsschutz in untertgigen Bergwerken - Schutzsysteme - Teil 1: 2-bar-Wetterbauwerk This European Standard was approved by CEN on 30 July 2004. CEN members are bound to comply with the CEN/CENELEC Internal Regulations whic
10、h stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the Central Secretariat or to any CEN member. This European Stan
11、dard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the Central Secretariat has the same status as the official versions. CEN members are the national stan
12、dards 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, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COM
13、MITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: rue de Stassart, 36 B-1050 Brussels 2004 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 14591-1:2004: E Licensed Copy: Wan
14、g Bin, na, Thu Sep 01 09:03:49 BST 2005, Uncontrolled Copy, (c) BSIEN 14591-1:2004 (E) 2 Contents Page Foreword .4 1 Scope5 2 Normative references.5 3 Terms and definitions 5 4 Symbols and abbreviations .6 5 Safety requirements.6 5.1 General6 5.2 Air shutter frames.7 5.2.1 Materials and components.7
15、 5.2.2 Air shutter frame length and rib thickness7 5.2.3 Connection to strata.9 5.3 Air doors.9 5.3.1 General9 5.3.2 2-bar travel way door9 5.3.3 2-bar haulage way door9 5.3.4 Control system .9 6 Marking .9 Annex A (normative) Representation of the verifiably tested 2-bar travel way door with an ins
16、ide width of a = 700 mm and a vertical clearance of h 0= 1 800 mm.10 Annex B (normative) Representation of the verifiably tested 2-bar haulage way door with an inside width of a = 1 600 mm and a vertical clearance h 0= 2 000 mm .12 Annex ZA (informative) Clauses of this European Standard addressing
17、essential requirements or other provisions of EU Directives14 Bibliography15 Figures Figure 1 Schematic representation of a 2-bar explosion proof ventilation structure. 7 Figure 2 Schematic representation of rib thicknesses R 1between the haulage way door and the travel way door and other fixtures 8
18、 Figure 3 Schematic representation of rib thicknesses R 2between one fixture and another and between the fixtures and wall or floor of the roadway. 8 Figure A.1 2-bar travel way door 10 Figure B.1 2-bar haulage way door 12 Tables Table 1 Symbols and abbreviations . 6 Table 2 Dimensions for the rib t
19、hickness of a 2-bar explosion proof ventilation structure as a function of roadway cross-section. 9 Licensed Copy: Wang Bin, na, Thu Sep 01 09:03:49 BST 2005, Uncontrolled Copy, (c) BSIEN 14591-1:2004 (E) 3 Table A.1 Parts list for a 2-bar travel way door . 11 Table B.1 Parts list for 2-bar haulage
20、way door 13 Licensed Copy: Wang Bin, na, Thu Sep 01 09:03:49 BST 2005, Uncontrolled Copy, (c) BSIEN 14591-1:2004 (E) 4 Foreword This document EN 14591-1:2004 has been prepared by Technical Committee CEN/TC 305 “Potentially explosive atmospheres - Explosion prevention and protection”, the secretariat
21、 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 March 2005, and conflicting national standards shall be withdrawn at the latest by March 2005. This document has been prep
22、ared under a mandate given to CEN by the European Commission and the European Free Trade Association, and supports essential requirements of EU Directive(s). For relationship with EU Directives, see informative Annex ZA, which is an integral part of this document. This European Standard consists of
23、the following parts: EN 14591-1, Explosion prevention and protection in underground mines Protective systems Part 1: 2-bar explosion proof ventilation structure. prEN 14591-2, Explosion prevention and protection in underground mines Protective systems Part 2: Water trough barriers. prEN 14591-3, Exp
24、losion prevention and protection in underground mines Protective systems Part 3: Water troughs for explosion barriers. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, C
25、yprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. . Licensed Copy: Wang Bin, na, Thu Sep 01 0
26、9:03:49 BST 2005, Uncontrolled Copy, (c) BSIEN 14591-1:2004 (E) 5 1 Scope This document applies to air shutter frames and air doors for ventilation structures which are to remain functional after the passage of explosions with overpressures of up to 2 bar. Ventilation structures are protective syste
27、ms to provide the ventilation flow after the occurrence of an explosion such that the effects of an explosion on the ventilation system can be limited and adequate possibilities remain for escape and rescue. NOTE These structures may be used when ventilation studies indicate that the air flow in the
28、 work place would be reduced considerably providing no safe escape for workers in cases where the structure is destroyed. Explosion proof ventilation structures will be individually evaluated for directional stability of ventilation flows and in order to ensure adequate ventilation flows. 2 Normativ
29、e references The 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 10025, Hot rolled products of non
30、-alloy structural steels Technical delivery conditions. EN 13463-1, Non-electrical equipment for potentially explosive atmospheres Part 1: Basic method and requirements. EN 13478, Safety of machinery Fire prevention and protection. ISO 2768-1, General tolerances Part 1: Tolerances for linear and ang
31、ular dimensions without individual tolerance indications. 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 air shutter frame shutter frame that shuts off a working section except for those openings for haulage way, travel way, conveyor, cables
32、 and pipes as well as openings necessary to ensure the required air flow according to existing pressure conditions 3.2 pressure-relief air door air door with leaves opening and closing in opposite directions NOTE The forces are balanced by design measures, e.g. connecting rod or turning chain so tha
33、t only the friction and readjustment forces of the opening and closing device remain to be overcome. 3.3 non-pressure-relief air door air door that normally opens against the air flow direction with mechanical devices for opening and closing Licensed Copy: Wang Bin, na, Thu Sep 01 09:03:49 BST 2005,
34、 Uncontrolled Copy, (c) BSIEN 14591-1:2004 (E) 6 4 Symbols and abbreviations Table 1 Symbols and abbreviations Abbrevi- ation Dimension Unit l D 2 bar Minimum length of air shutter frame millimetre a w Maximum roadway width/height at ventilation structure millimetre bs Tensile bending strength of ma
35、terial used Newton per square millimetre R 1 , R 2Rib thickness millimetre T Thickness millimetre A Inside width millimetre h o Vertical clearance millimetre L Angle steel - U U-steel - Fl Flat-bar steel - Bl Plate - Vkt Square steel bar - TB T-steel - Ex Explosion - 5 Safety requirements 5.1 Genera
36、l A ventilation structure for explosion overpressures of up to 2 bar (2-bar explosion proof ventilation structure) comprises at least one air shutter frame according to 5.2. When air doors have to be provided in these air regulators, the former shall be designed, for transport and haulage purposes,
37、as folding leaf doors according to 5.3.3 which are set against the direction of an explosion and as a pressure-relief folding door according to 5.3.2 for the travel way (see Figure 1 a). Where it is not possible to determine clearly the direction of the explosion, the air doors shall be provided on
38、both sides of the air shutter frame (see Figure 1 b). Licensed Copy: Wang Bin, na, Thu Sep 01 09:03:49 BST 2005, Uncontrolled Copy, (c) BSIEN 14591-1:2004 (E) 7 Key 1 Normal ventilation structure 2 2-bar explosion proof ventilation structure 3 Air lock Figure 1 Schematic representation of a 2-bar ex
39、plosion proof ventilation structure 5.2 Air shutter frames 5.2.1 Materials and components The materials and components used shall be non-combustible and approved for use below ground. Only hydraulically-bonded materials having a tensile bending strength of 3.5 N/mm 2(7-day value) shall be used. 5.2.
40、2 Air shutter frame length and rib thickness The minimum length of the air shutter frame is obtained from equation (1): bS a l = 5 , 2 95 , 0 w bar 2 D (1) The values for rib thickness R 1between the haulage way door and the travel way door and other fixtures (see Figure 2), and for rib thickness R
41、2between one fixture and another and between the fixtures and the side-wall or floor of the roadway (see Figure 3), are given in Table 2. Licensed Copy: Wang Bin, na, Thu Sep 01 09:03:49 BST 2005, Uncontrolled Copy, (c) BSIEN 14591-1:2004 (E) 8 Dimensions in millimetres Key 1 Compression insert Figu
42、re 2 Schematic representation of rib thicknesses R 1between the haulage way door and the travel way door and other fixtures Dimensions in millimetres Key 1 Compression insert Figure 3 Schematic representation of rib thicknesses R 2between one fixture and another and between the fixtures and wall or
43、floor of the roadway Licensed Copy: Wang Bin, na, Thu Sep 01 09:03:49 BST 2005, Uncontrolled Copy, (c) BSIEN 14591-1:2004 (E) 9 Table 2 Dimensions for the rib thickness of a 2-bar explosion proof ventilation structure as a function of roadway cross-section Roadway cross-section Rib thickness m 2 R 1
44、 mm R 2 mm 20 600 300 20 1 000 500 5.2.3 Connection to strata The air shutter frame shall be set into the strata to an all-round depth of at least 250 mm so as to create a solid abutment. Yielding components (compression inserts) may be used between the strata and the air shutter frame in order to a
45、bsorb strata movements. The thickness of the compression insert shall be allowed for in addition to the 250 mm-deep contact surface. 5.3 Air doors 5.3.1 General The air doors shall resist an overpressure of 2 bar and shall remain operative. 5.3.2 2-bar travel way door The 2-bar travel way door shall
46、 be constructed as a pressure-relief air door. Both door leaves shall allow simultaneous opening up to an angle of 90 from the door frame. Sealing bars shall be made of hardly combustible and antistatic materials (see EN 13478 and EN 13463-1). The construction represented in Annex A as an example ha
47、s been verifiably tested. Diverging dimensions shall be proven for their intended use with a proven static calculation. 5.3.3 2-bar haulage way door The 2-bar haulage way door shall be constructed as a non-pressure-relief air door. Both door leaves shall allow simultaneous opening up to an angle of
48、90 from the door frame. The construction represented in Annex B as an example has been verifiably tested. Diverging dimensions shall be proven for their intended use with a proven static calculation. 5.3.4 Control system The control lines and connections shall be protected from the potential effects
49、 of an explosion. Actuating contacts shall be designed and installed in such a way that they cannot be triggered by the pressure wave of an explosion. 6 Marking The 2-bar travel way door and 2-bar haulage way door shall be permanently marked with the year of manufacture and manufacturers stamp according to Directive 94/9/EC. Licensed Copy: Wang Bin, na, Thu Sep 01 09:03:49 BST 2005, Uncontrolled Copy, (c) BSIEN 14591-1:2004 (E
