This part of ISO\/IEC 80079 specifies the basic method and requirements for design, construction, testing and marking of non-electrical Ex equipment, Ex Components, protective systems, devices and assemblies of these products that have their own potential ignition sources and are intended for use in explosive atmospheres.<\/p>\n
Hand tools and manually operated equipment without energy storage are excluded from the scope of this standard. This standard does not address the safety of static autonomous process equipment when it is not part of equipment referred to in this standard.<\/p>\n
\nNOTE 1 Static autonomous process equipment includes items such as tanks, vessels, fixed pipework and hand operated valves which do not have their own source of energy that could create a potential ignition source during operation.<\/p>\n<\/blockquote>\n
This standard does not specify requirements for safety, other than those directly related to the risk of ignition which may then lead to an explosion. The standard atmospheric conditions (relating to the explosion characteristics of the atmosphere) under which it may be assumed that equipment can be operated are:<\/p>\n
\n
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temperature -20 \u00b0C to +60 \u00b0C;<\/p>\n<\/li>\n
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pressure 80 kPa (0,8 bar) to 110 kPa (1,1 bar); and<\/p>\n<\/li>\n
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air with normal oxygen content, typically 21 % v\/v.<\/p>\n<\/li>\n<\/ul>\n
Such atmospheres can also exist inside the equipment. In addition, the external atmosphere can be drawn inside the equipment by natural breathing produced as a result of fluctuations in the equipment\u2019s internal operating pressure, and\/or temperature.<\/p>\n
\nNOTE 2 Although the standard atmospheric conditions above give a temperature range for the atmosphere of – 20 \u00b0C to +60 \u00b0C, the normal ambient temperature range for the equipment is -20 \u00b0C to +40 \u00b0C, unless otherwise specified and marked. It is considered that -20 \u00b0C to +40 \u00b0C is appropriate for most equipment and that to manufacture all equipment to be suitable for a standard atmosphere upper ambient temperature of +60 \u00b0C would place unnecessary design constraints.<\/p>\n<\/blockquote>\n
\nNOTE 3 The requirements of this standard can also be helpful for the design, construction, testing and marking of equipment intended for use in atmospheres outside the validity range stated above. In this case however, the ignition hazard assessment, ignition protection provided, additional testing (if necessary), manufacturer\u2019s technical documentation and instructions to the user, clearly demonstrate and indicate the equipment\u2019s suitability for the conditions it may encounter. It is also recognized that changes in temperature and pressure can have a significant influence on characteristics of the explosive atmosphere, such as ignitability.<\/p>\n<\/blockquote>\n
This part of ISO\/IEC 80079 specifies the requirements for the design and construction of equipment, intended for explosive atmospheres in conformity with all Equipment Protection Levels (EPLs) of Group I, II and III.<\/p>\n
\nNOTE 4 It is not unusual for equipment designed and constructed in accordance with this standard for a particular EPL to be used in areas requiring an EPL with a higher level of safety by including the application of additional measures. Such measures include for example inerting, suppression, venting or containment or for example by dilution, drainage, monitoring and shut-down. Such measures are outside the scope of this standard.<\/p>\n<\/blockquote>\n
This standard supplements and modifies the general requirements of IEC 60079-0, as shown in Table 1. Where a requirement of this standard conflicts with a requirement of IEC 60079-0, as far as applicable for non-electrical equipment, the requirement of this standard takes precedence.<\/p>\n
This standard is supplemented or modified by the following standards concerning specific types of protection:<\/p>\n
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ISO 80079-37, Explosive atmospheres \u2013 Part 37: Non-electrical equipment for explosive atmospheres \u2013 Non-electrical type of protection constructional safety “c”, control of ignition source “b”, liquid immersion “k”<\/i><\/p>\n<\/li>\n
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IEC 60079-1, Explosive atmospheres \u2013 Part 1: Equipment protection by flameproof enclosures “d”<\/i><\/p>\n<\/li>\n
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IEC 60079-2, Explosive atmospheres \u2013 Part 2: Equipment protection by pressurized enclosures “p”<\/i><\/p>\n<\/li>\n
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IEC 60079-31, Explosive atmospheres \u2013 Part 31: Equipment dust ignition protection by enclosure “t”<\/i><\/p>\n<\/li>\n<\/ul>\n
The nature and ignition sources of non-electrical equipment shall be considered when applying types of protection “d”, “p”, or “t” on non-electrical equipment (see Annex G).<\/p>\n
PDF Catalog<\/h4>\n
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\n PDF Pages<\/th>\n PDF Title<\/th>\n<\/tr>\n \n 2<\/td>\n undefined <\/td>\n<\/tr>\n \n 4<\/td>\n European Foreword
Endorsement notice <\/td>\n<\/tr>\n\n 5<\/td>\n Annex ZA (informative) Relationship between this European Standard and the Essential Requirements of EU Directive 2014\/34\/EU
Table ZA.1 \u2014 Correspondence between this European Standard and Directive 2014\/34\/EU <\/td>\n<\/tr>\n\n 7<\/td>\n Annex ZB (informative) Correspondence of equipment groups
Table ZB.1 \u2014 Correspondence of equipment groups <\/td>\n<\/tr>\n\n 8<\/td>\n Annex ZC (informative) Significant changes between this European Standard and EN 13463-1:2009
Table ZC.1 \u2014 Significant changes between this European Standard and EN 13463-1:2009 <\/td>\n<\/tr>\n\n 11<\/td>\n English
CONTENTS <\/td>\n<\/tr>\n\n 15<\/td>\n FOREWORD <\/td>\n<\/tr>\n \n 17<\/td>\n INTRODUCTION <\/td>\n<\/tr>\n \n 18<\/td>\n 1 Scope <\/td>\n<\/tr>\n \n 19<\/td>\n Tables
Table 1 \u2013 Applicability of specific clauses of IEC 60079-0 (1 of 5) <\/td>\n<\/tr>\n\n 23<\/td>\n 2 Normative references <\/td>\n<\/tr>\n \n 24<\/td>\n 3 Terms and definitions <\/td>\n<\/tr>\n \n 27<\/td>\n 4 EPL and equipment groups
4.1 EPL
4.2 Group I
4.3 Group II <\/td>\n<\/tr>\n\n 28<\/td>\n 4.4 Group III
4.5 Equipment for specific explosive gas atmospheres
5 Ignition hazard assessment
5.1 General requirements <\/td>\n<\/tr>\n\n 29<\/td>\n 5.2 Procedure of ignition hazard assessment
5.2.1 Formal Ignition hazard identification and assessment
Figures
Figure 1 \u2013 Relationship between ignition source definitions <\/td>\n<\/tr>\n\n 30<\/td>\n 5.2.2 Group I equipment assessment
5.2.3 Group II and III equipment assessment <\/td>\n<\/tr>\n\n 31<\/td>\n 5.2.4 Assessment with malfunctions
5.2.5 Basic information necessary for the ignition hazard assessments
5.2.6 Ignition hazard assessment report <\/td>\n<\/tr>\n\n 32<\/td>\n 6 Assessment of possible ignition sources and control means
6.1 General
6.2 Hot surfaces
6.2.1 General
6.2.2 Ambient temperatures
6.2.3 Establishing the maximum surface temperature <\/td>\n<\/tr>\n\n 33<\/td>\n 6.2.4 Group I equipment
6.2.5 Group II equipment
Table 2 \u2013 Classification of maximum surface temperatures for Group II equipment <\/td>\n<\/tr>\n\n 34<\/td>\n 6.2.6 Special cases for Group I and Group II equipment
Table 3 \u2013 Assessment for temperature classification for small surface areas <\/td>\n<\/tr>\n\n 35<\/td>\n 6.2.7 Group III equipment
6.3 Flames and hot gases (including hot particles)
6.4 Mechanically generated sparks and hot surfaces
6.4.1 General
6.4.2 Assessment of sparks generated by single impacts <\/td>\n<\/tr>\n\n 37<\/td>\n 6.4.3 Assessment of sparks and hot surfaces generated by friction
Table 4 \u2013 Single impact energy limits for EPL Ga
Table 5 \u2013 Single impact energy limits for EPL Gb
Table 6 \u2013 Single impact energy limits for EPL Gc
Table 7 \u2013 Single impact energy limits for EPL Da, Db and Dc <\/td>\n<\/tr>\n\n 38<\/td>\n 6.4.4 External equipment parts containing light metals
6.5 Electrical ignition sources except stray current
6.6 Stray electric currents, cathodic corrosion protection
6.6.1 Internal sources
6.6.2 External sources
6.7 Static electricity
6.7.1 General <\/td>\n<\/tr>\n\n 39<\/td>\n 6.7.2 Connection facilities for earthing conducting parts
6.7.3 Prevention of highly efficient charge generating mechanisms (leading to propagating brush discharges on non-conductive layers and coatings)
6.7.4 Equipment group I <\/td>\n<\/tr>\n\n 40<\/td>\n 6.7.5 Equipment group II
6.7.6 Equipment group III
Table 8 \u2013 Permitted maximum projected areas for non-conductive parts of equipment liable to become electrostatically charged <\/td>\n<\/tr>\n\n 41<\/td>\n 6.8 Adiabatic compression and shock waves
6.9 Exothermic reactions, including self-ignition of dusts
7 Additional considerations
7.1 Dust deposits and other material in the gap of moving parts <\/td>\n<\/tr>\n\n 42<\/td>\n 7.2 Dust deposits and other material in the flame arresters incorporated in the equipment
7.3 Opening times of enclosures
7.4 Non-metallic enclosures and non-metallic parts of the equipment
7.4.1 General
7.4.2 Specification of the materials
7.4.3 Thermal endurance
7.5 Removable parts
7.6 Materials used for cementing <\/td>\n<\/tr>\n\n 43<\/td>\n 7.7 Light transmitting parts
7.8 Stored energy
8 Verification and tests
8.1 General
8.2 Determination of the maximum surface temperature
8.2.1 General <\/td>\n<\/tr>\n\n 45<\/td>\n 8.2.2 Hot Surface Ignition Test <\/td>\n<\/tr>\n \n 46<\/td>\n 8.3 Mechanical tests
8.3.1 Test for resistance to impact
8.3.2 Drop test
8.3.3 Required results
8.4 Additional tests of non-metallic parts of the equipment relevant for explosion protection
8.4.1 Test temperatures
8.4.2 Tests for Group I equipment <\/td>\n<\/tr>\n\n 47<\/td>\n 8.4.3 Tests for Group II and III equipment
8.4.4 Thermal endurance to heat
Table 9 \u2013 Thermal endurance test <\/td>\n<\/tr>\n\n 48<\/td>\n 8.4.5 Thermal endurance to cold
8.4.6 Resistance to chemical substances for Group I equipment
8.4.7 Mechanical resistance tests
8.4.8 Surface resistance test of non-conductive parts of the equipment relevant for explosion prevention and protection
8.4.9 Thermal shock test
9 Documentation
9.1 Technical documentation <\/td>\n<\/tr>\n\n 49<\/td>\n 9.2 Conformity with the documentation
9.3 Certificate
9.4 Responsibility for marking
10 Instructions <\/td>\n<\/tr>\n\n 50<\/td>\n 11 Marking
11.1 Location
11.2 General <\/td>\n<\/tr>\n\n 51<\/td>\n 11.3 Warning markings
Table 10 \u2013 Ambient temperature marking
Table 11 \u2013 Text of warning markings <\/td>\n<\/tr>\n\n 52<\/td>\n 11.4 Marking on very small equipment
11.5 Examples of marking <\/td>\n<\/tr>\n\n 53<\/td>\n Annexes
Annex A (informative) Methodology for confirming the EPL
A.1 Methodology for confirming the EPL of Group I
A.1.1 EPL Ma
A.1.2 EPL Mb
A.2 Methodology for confirming the EPL of Group II and III
A.2.1 EPL Ga and Da
A.2.2 EPL Gb and Db
A.2.3 EPL Gc and Dc <\/td>\n<\/tr>\n\n 54<\/td>\n Annex B (informative) Explanation of the ignition hazard assessment procedure
B.1 Overview
B.1.1 General
B.1.2 Reporting with the help of a table
B.2 Assessment Procedure <\/td>\n<\/tr>\n\n 55<\/td>\n B.3 Assessment Steps
B.3.1 Identification of Ignition Hazards
Table B.1 \u2013Table showing recommended documentation of an example of initial assessment of equipment related ignition sources <\/td>\n<\/tr>\n\n 56<\/td>\n B.3.2 Determination of measures
Table B.2 \u2013 Example for reporting of the identification of ignition hazards (step 1) and the first assessment (step 2) <\/td>\n<\/tr>\n\n 57<\/td>\n B.3.3 Concluding ignition hazard estimation and categorisation
B.3.4 Determination of the EPL
Table B.3 \u2013 Example for reporting of the determination of protective measures (step 3) and the concluding estimation and categorisation (step 4) <\/td>\n<\/tr>\n\n 58<\/td>\n Annex C (informative) Examples of ignition hazard assessment
C.1 General remarks
C.2 Examples for common cases demonstrating the use of the scheme
Table C.1 \u2013 List of examples <\/td>\n<\/tr>\n\n 59<\/td>\n Table C.2 \u2013 Common cases demonstrating the use of the scheme \u2013 Electrostatic discharge (1 of 2) <\/td>\n<\/tr>\n \n 61<\/td>\n Table C.3 \u2013 Common cases demonstrating the use of the scheme \u2013 Hot surface (1 of 2) <\/td>\n<\/tr>\n \n 63<\/td>\n Table C.4 \u2013 Common cases demonstrating the use of the scheme \u2013 Mechanical spark (1 of 2) <\/td>\n<\/tr>\n \n 65<\/td>\n C.3 Example of an ignition hazard assessment for a pump <\/td>\n<\/tr>\n \n 66<\/td>\n Table C.5 \u2013 Ignition hazard assessment report for a pump (1 of 3) <\/td>\n<\/tr>\n \n 69<\/td>\n C.4 Example of an ignition hazard assessment for an agitator <\/td>\n<\/tr>\n \n 70<\/td>\n Table C.6 \u2013 Ignition hazard assessment report for an agitator (1 of 10) <\/td>\n<\/tr>\n \n 80<\/td>\n Annex D (normative) Charging tests with non-conductive materials
D.1 General
D.2 Principle of the test <\/td>\n<\/tr>\n\n 81<\/td>\n D.3 Samples and apparatus
D.4 Procedure
D.4.1 Conditioning
D.4.2 Determination of the most efficient charging method <\/td>\n<\/tr>\n\n 83<\/td>\n Figure D.1 \u2013 Rubbing with a pure polyamide cloth
Figure D.2 \u2013 Discharging the charged surface of the test piece with a probe connected to earth via a 0,1 \u03bcF capacitor <\/td>\n<\/tr>\n\n 84<\/td>\n Figure D.3 \u2013 Charging by the influence of a DC high voltage power <\/td>\n<\/tr>\n \n 85<\/td>\n Annex E (informative) Consideration of misuse which can reasonably be anticipated during ignition hazard assessment procedure
E.1 General
E.2 Identification and analysis of the ignition hazards
E.3 First assessment of the ignition hazards
E.4 Determination of safety measures <\/td>\n<\/tr>\n\n 86<\/td>\n E.5 Final assessment of the ignition hazards <\/td>\n<\/tr>\n \n 87<\/td>\n Annex F (informative) Development of different types of incendive electrostatic discharges
Figure F.1 \u2013 Different types of incendive electrostatic discharges <\/td>\n<\/tr>\n\n 88<\/td>\n Annex G (normative) Protection concepts of types of protection “d”, “p”and “t” acceptable for non-electrical equipment <\/td>\n<\/tr>\n \n 89<\/td>\n Annex H (informative) Volume dependence of auto-ignition temperature
Table H.1 \u2013 AITs of combustibles taken from IEC 60079-20-1 as contained in Figure H.1. <\/td>\n<\/tr>\n\n 90<\/td>\n Figure H.1 \u2013 Volume dependence of auto-ignition temperature <\/td>\n<\/tr>\n \n 91<\/td>\n Annex I (informative) Relationship between Equipment protection levels (EPLs) and zones
Table I.1 \u2013 Relationship between Equipment protection levels (EPLs) and zones <\/td>\n<\/tr>\n\n 92<\/td>\n Bibliography <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":" Explosive atmospheres – Non-electrical equipment for explosive atmospheres. Basic method and requirements<\/b><\/p>\n
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\n Published By<\/td>\n Publication Date<\/td>\n Number of Pages<\/td>\n<\/tr>\n \n BSI<\/b><\/a><\/td>\n 2020<\/td>\n 94<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"featured_media":422932,"template":"","meta":{"rank_math_lock_modified_date":false,"ep_exclude_from_search":false},"product_cat":[551,2641],"product_tag":[],"class_list":{"0":"post-422927","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-29-260-20","7":"product_cat-bsi","9":"first","10":"instock","11":"sold-individually","12":"shipping-taxable","13":"purchasable","14":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product\/422927","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/types\/product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media\/422932"}],"wp:attachment":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media?parent=422927"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_cat?post=422927"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_tag?post=422927"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}