1、November 2007DEUTSCHE NORM English price group 11No 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!$J3)“1391606ww
2、w.din.deDDIN EN 15198Methodology for the risk assessment of non-electrical equipment andcomponents for intended use in potentially explosive atmospheresEnglish version of DIN EN 15198:2007-11Methodik zur Risikobewertung fr nicht-elektrische Gerte und Komponenten zurVerwendung in explosionsgefhrdeten
3、 BereichenEnglische Fassung DIN EN 15198:2007-11www.beuth.deDocument comprises 20 pagesDIN EN 15198:2007-11 2 National foreword This standard has been prepared by Technical Committee CEN/TC 305 “Potentially explosive atmos-pheres Explosion prevention and protection” (Secretariat: DIN, Germany), Work
4、ing Group WG 4 “Terminology and Methodology”. The responsible German body involved in its preparation was the Normenausschuss Sicherheitstechnische Grundstze (Safety Design Principles Standards Committee), Technical Committee NA 095-02-06 AA Termi-nologie, Methodik. The DIN Standard corresponding to
5、 the International Standard referred to in this EN is as follows: ISO/IEC Guide 51 DIN 820-120 National Annex NA (informative) Bibliography DIN 820-120, Standardization Part 120: Guidelines for the inclusion of safety aspects in standards EUROPEAN STANDARDNORME EUROPENNEEUROPISCHE NORMEN 15198August
6、 2007ICS 13.230English VersionMethodology for the risk assessment of non-electrical equipmentand components for intended use in potentially explosiveatmospheresMthodes pour lvaluation du risque dinflammation desappareils et des composants non lectriques destins tre utiliss en atmosphres explosiblesM
7、ethodik zur Risikobewertung fr nicht-elektrische Gerteund Komponenten zur Verwendung inexplosionsgefhrdeten BereichenThis European Standard was approved by CEN on 13 July 2007.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this Eur
8、opeanStandard 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 CEN Management Centre or to any CEN member.This European Standard exists in three official versions (English
9、, 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 CEN Management Centre has the same status as theofficial versions.CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cypr
10、us, 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 STANDARDIZATIONCOMIT
11、EUROPEN DE NORMALISATIONEUROPISCHES KOMITEE FR NORMUNGManagement Centre: 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 15198:2007: EEN 15198:2007 (E) 2 Contents Page Foreword3 Introduction .
12、4 1 Scope 5 2 Normative references 5 3 Terms and definitions .6 4 General requirements6 5 Ignition risk assessment Procedure8 6 Documentation.13 Annex A (informative) Example of a reporting scheme for the ignition risk assessment .14 Annex ZA (informative) Relationship between this European Standard
13、 and the Essential Requirements of EU Directive 94/9/EC 16 Bibliography 18 Figures Figure 1 Ignition risk assessment for design of equipment or component 8 Figure 2 Identification of ignition hazards . 10 Tables Table A.1 Reporting scheme with cross references to the documentation requirements of Cl
14、ause 6 . 15 Table ZA.1 Correspondence between this European Standard and Directive 94/9/EC . 16 EN 15198:2007 (E) 3 Foreword This document (EN 15198:2007) has been prepared by Technical Committee CEN/TC 305 “Potentially explosive atmospheres - Explosion prevention and protection”, the secretariat of
15、 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 February 2008, and conflicting national standards shall be withdrawn at the latest by February 2008. Attention is drawn to th
16、e possibility that some of the elements of this document may be the subject of patent rights. CEN and/or CENELEC shall not be held responsible for identifying any or all such patent rights. This document has been prepared under a mandate given to CEN by the European Commission and the European Free
17、Trade Association, and supports essential requirements of EU Directive 94/9/EC. For relationship with EU Directive 94/9/EC, see informative Annex ZA, which is an integral part of this document. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following c
18、ountries are bound to implement this 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,
19、Spain, Sweden, Switzerland and the United Kingdom. EN 15198:2007 (E) 4 Introduction The function of this type A standard (description of general principles) as defined in CEN Guide 414 is to describe principles for a consistent systematic procedure for ignition risk assessment depending on Group II
20、or Group I equipment. Annex A is informative and contains examples for ignition risk assessment. This European Standard does not provide means to prove the conformity of equipment categories. The procedure of ignition risk assessment for the design of equipment and components lead to a defined safet
21、y level which allows categorisation according to the appropriate criteria. It is in both the manufacturers and users interest to establish a common methodology for achieving safety, reliability and efficacy in functioning and operating equipment and components with respect to the ignition hazards. T
22、hus, ignition risk assessment is a tool which provides the essential link between manufacturers and users, but only aspects that directly address manufacturers are incorporated. Integrated explosion safety is conceived to prevent the formation of explosive atmospheres as well as sources of ignition
23、and, should an explosion nevertheless occur, to halt it immediately and / or to limit its effects. In this connection, the manufacturer must take measures with respect to the potential ignition sources. In addition, equipment and component must be designed and constructed after due analysis of possi
24、ble operating faults in order as far as possible to preclude dangerous situations taking the misuse which can reasonably be anticipated into account. Therefore it is absolutely necessary to conduct an ignition risk assessment process. For the equipment and components the identification of the potent
25、ial ignition sources is the most relevant part of the ignition risk assessment. EN 15198:2007 (E) 5 1 Scope This European Standard specifies basic methodology used in achieving safety of equipment for intended use in potentially explosive atmospheres. The provisions specified in this European Standa
26、rd are intended for the designer. It also specifies a strategy for standard makers. This European Standard specifies the procedure and information required to allow ignition risk assessment to be carried out for the design of equipment or component. This European Standard provides advice for a decis
27、ion to be made for the categorisation of equipment but does not provide means to prove the conformity of equipment categories. In this procedure the following information is to be taken into account: a) Possible occurrence of an explosive atmosphere inside the equipment or component or penetrating t
28、he equipment or component from the outside (in normal operation or during malfunctions) and the amount of explosive atmosphere involved leading to possible explosion impact inside of the equipment or component; b) equipment or components surrounded by an explosive atmosphere (in normal operation or
29、during malfunctions); c) equipment or components wholly or partly surrounded by an explosive atmosphere considering also any explosive atmosphere in connection (in normal operation or during malfunctions); d) presence and likelihood (effectiveness) of ignition sources. The final objective is designi
30、ng and manufacturing equipment or components intended for use in potentially explosive atmospheres. For this purpose equipment or components if necessary should be designed with adequate preventive and/or protective measures. This European Standard specifies neither specific methods of analysis asso
31、ciated with ignition risk assessment, nor specific requirements for a category of equipment. It describes the methodology of ignition risk assessment. This European Standard does not apply to equipment with a potentially explosive atmosphere inside under operating conditions, and without interfaces
32、to an external potentially explosive atmospheres. This European Standard is applicable to all categories of equipment referred to in EN 13463-1. This ignition risk assessment procedure does not preclude the conditions prevailing in an installation where the equipment or component is put into operati
33、on by a user. NOTE Functional safety assessment of protective systems is covered by EN 15233. 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, the latest edi
34、tion of the referenced document (including any amendments) applies. EN 1127-1, Explosive atmospheres Explosion prevention and protection Part 1: Basic concepts and methodology EN 15198:2007 (E) 6 EN 1127-2, Explosive atmospheres Explosion prevention and protection Part 2: Basic concepts and methodol
35、ogy for mining EN 13237:2003, Potentially explosive atmospheres Terms and definitions for equipment and protective systems intended for use in potentially explosive atmospheres 3 Terms and definitions For the purposes of this document, the terms and definitions given in EN 13237:2003 and the followi
36、ng apply. 3.1 ignition risk probability of occurrence of an ignition source that is capable of igniting an explosive atmosphere 3.2 ignition hazard occurrence of a potential ignition source that is capable of igniting an explosive atmosphere 3.3 potential ignition source equipment related ignition s
37、ource that has the capability to ignite an explosive atmosphere (i.e. to become an effective ignition source) 3.4 protective measure means used to reduce the probability of an ignition source to become effective 3.5 ignition risk estimation determination of the probability of the occurrence of an ig
38、nition source 3.6 ignition risk evaluation procedure to determine whether the intended level of protection (related to the equipment category) has been achieved 4 General requirements 4.1 Basic concept Ignition risk assessment is a series of logical steps (see Figure 1) that enable designers and saf
39、ety engineers to examine in a systematic way, the function of an equipment or component arising from its use in a potentially explosive atmosphere and to decide whether protective measures and/or type of protection are needed. The objective shall be to achieve an adequate level of safety. Ignition r
40、isk assessment includes the following four steps: a) product description: performance, lifetime, configuration (see 5.2), b) identification of ignition hazards (see 5.3), c) ignition risk estimation (see 5.4), d) ignition risk evaluation (see 5.5). These four steps are the basis for the decision whe
41、ther the intended safety level is achieved (see 5.6). The result of the assessment shall be detailed in the technical documentation (see Clause 6). EN 15198:2007 (E) 7 If the intended level of protection is not achieved, it shall be necessary after redesign, to reassess the procedure to obtain the c
42、orrect category or use of suitable protective measures. NOTE The determination of correct categories and the selection of the suitable protective measures is not part of this standard. 4.2 Extent of ignition risk assessment Initially the boundary or limit of the equipment and/or components must be s
43、pecified under which the ignition risk assessment has to be carried out. The limit is determined by the extent of explosive atmosphere or the ignition sources which are originated by the considered equipment and/or components. The ignition risk assessment shall be limited to equipment and/or compone
44、nts and not extended to aspects for which the user is responsible. The extent of the ignition risk assessment, which includes all operations, shall take into account: a) intended use; and b) misuse which can be reasonably anticipated. An ignition risk assessment shall also include the possibility of
45、 an explosion inside the equipment and/or components causing an impact on the outside. NOTE Misuse that can be reasonably anticipated indicates incorrect use and/or operation of the equipment and/or components by the operator due to carelessness or misunderstanding. Misuse is not part of the normal
46、operation. Intent is not included in misuse that can reasonably be anticipated. 4.3 Information needed for ignition risk assessment The information needed to perform the ignition risk assessment shall include the following where appropriate: a) intended use referring to group I or group II and categ
47、ories 1, 2, 3; b) initial appraisal of the equipment or component; c) materials to be processed (or necessary safety data); d) requirements for maintenance including cleaning; e) design drawings; f) results of design calculations made, examinations carried out. If available: g) test reports, if they
48、 allow the evaluation of the probability of occurrence and/or the efficiency of ignition sources; h) accident history; i) information on relevant safety aspects. If an accident history is not available for the equipment and/or components, available information for similar equipment and/or components
49、 shall be used as it is unlikely that equipment and/or components are so unique that similar equipment and/or components cannot be found. The absence of an accident history, a small EN 15198:2007 (E) 8 number of accidents or low severities of accidents shall not be taken as an automatic presumption of a low ignition risk. The information shall be updated as the design develops and modifications are required. For quantitative assessment, data from data bases, handbooks, laboratories and manufacturers specifications shall be used provided tha
