{"id":239404,"date":"2024-10-19T15:39:32","date_gmt":"2024-10-19T15:39:32","guid":{"rendered":"https:\/\/pdfstandards.shop\/product\/uncategorized\/bs-en-60079-22014\/"},"modified":"2024-10-25T10:21:45","modified_gmt":"2024-10-25T10:21:45","slug":"bs-en-60079-22014","status":"publish","type":"product","link":"https:\/\/pdfstandards.shop\/product\/publishers\/bsi\/bs-en-60079-22014\/","title":{"rendered":"BS EN 60079-2:2014"},"content":{"rendered":"<p>This part of IEC&nbsp;60079 contains the specific requirements for the construction and testing of electrical equipment with pressurized enclosures, of type of protection \u201cp\u201d, intended for use in explosive gas atmospheres or explosive dust atmospheres. It also includes the requirements for pressurized enclosures containing a limited release of a flammable substance.<\/p>\n<p>This standard supplements and modifies the general requirements of IEC&nbsp;60079-0. Where a requirement of this standard conflicts with a requirement of IEC&nbsp;60079-0, the requirements of this standard take precedence.<\/p>\n<p>This standard does not include the requirements for:<\/p>\n<ul>\n<li>\n<p>pressurized enclosures where the containment system may release<\/p>\n<ol style=\"list-style-type:lower-alpha\">\n<li>\n<p>air with an oxygen content greater than normal, or<\/p>\n<\/li>\n<li>\n<p>oxygen in combination with inert gas where the oxygen is in a proportion greater than 21&nbsp;%.<\/p>\n<\/li>\n<\/ol>\n<\/li>\n<li>\n<p>pressurized rooms or analyser houses; see IEC&nbsp;60079-13;<\/p>\n<\/li>\n<li>\n<p>pressurized enclosures used where \u201cexplosives\u201d or pyrotechnics are present;<\/p>\n<\/li>\n<li>\n<p>pressurized enclosures used where hybrid mixtures of gas\/vapour and combustible dust are present;<\/p>\n<\/li>\n<li>\n<p>pressurized enclosures used where pyrophoric substances such as explosives or propellants containing their own oxidizers are present<\/p>\n<\/li>\n<li>\n<p>pressurized enclosures with an internal source of release of combustible dust.<\/p>\n<\/li>\n<\/ul>\n<blockquote>\n<p>NOTE When the user acts in the role of the manufacturer, it is typically the user\u2019s responsibility to ensure that all relevant parts of this standard are applied to the manufacturing and testing of the equipment.<\/p>\n<\/blockquote>\n<h4>PDF Catalog<\/h4>\n<table border=\"1px\" class=\"des-table\">\n<tr>\n<th>PDF Pages<\/th>\n<th>PDF Title<\/th>\n<\/tr>\n<tr>\n<td><b>2<b><\/td>\n<td>undefined  <\/td>\n<\/tr>\n<tr>\n<td><b>4<b><\/td>\n<td>Foreword <br \/> Endorsement notice  <\/td>\n<\/tr>\n<tr>\n<td><b>6<b><\/td>\n<td>Annex ZA (normative)  Normative references to international publications with their corresponding European publications  <\/td>\n<\/tr>\n<tr>\n<td><b>7<b><\/td>\n<td>Annex ZZ (informative)  Coverage of Essential Requirements of EU Directives  <\/td>\n<\/tr>\n<tr>\n<td><b>8<b><\/td>\n<td>Annex ZY (informative)  Significant changes between this European Standard and EN 60079-2:2007  <\/td>\n<\/tr>\n<tr>\n<td><b>12<b><\/td>\n<td>Explanations: <br \/> A) Definitions <br \/> B) Information about the background of \u2018major technical changes\u2019  <\/td>\n<\/tr>\n<tr>\n<td><b>15<b><\/td>\n<td>English  <br \/> CONTENTS  <\/td>\n<\/tr>\n<tr>\n<td><b>20<b><\/td>\n<td>FOREWORD  <\/td>\n<\/tr>\n<tr>\n<td><b>29<b><\/td>\n<td>INTRODUCTION  <\/td>\n<\/tr>\n<tr>\n<td><b>30<b><\/td>\n<td>1 Scope <br \/> 2 Normative references  <\/td>\n<\/tr>\n<tr>\n<td><b>31<b><\/td>\n<td>3 Terms and definitions  <\/td>\n<\/tr>\n<tr>\n<td><b>33<b><\/td>\n<td>4 Protection levels  <\/td>\n<\/tr>\n<tr>\n<td><b>34<b><\/td>\n<td>Tables  <br \/> Table 1 \u2013 Determination of protection level  <\/td>\n<\/tr>\n<tr>\n<td><b>35<b><\/td>\n<td>Table 2 \u2013 Design criteria based upon level of protection  <\/td>\n<\/tr>\n<tr>\n<td><b>36<b><\/td>\n<td>5 Constructional requirements for pressurized enclosures <br \/> 5.1 Enclosure <br \/> 5.2 Materials <br \/> 5.3 Doors and covers <br \/> 5.3.1 Group I pressurized enclosures  <br \/> 5.3.2 Group I pressurized enclosures with static pressurization  <br \/> 5.3.3 Group II and Group III pressurized enclosures   <\/td>\n<\/tr>\n<tr>\n<td><b>37<b><\/td>\n<td>5.3.4 Group II and Group III pressurized enclosures with static pressurization  <br \/> 5.3.5 Group II and Group III Level of Protection \u201cpxb\u201d  <br \/> 5.3.6 Group II and Group III Door and Cover warning <br \/> 5.4 Mechanical strength <br \/> 5.5 Group I and Group II Apertures, partitions, compartments and internal components  <\/td>\n<\/tr>\n<tr>\n<td><b>38<b><\/td>\n<td>5.6 Apertures for Static Pressurization <br \/> 5.7 Insulating materials for Group I equipment <br \/> 5.8 Sealing <br \/> 5.9 Spark and particle barriers  <\/td>\n<\/tr>\n<tr>\n<td><b>39<b><\/td>\n<td>5.10 Cells and batteries <br \/> 6 Temperature limits <br \/> 6.1 General <br \/> 6.2 For Level of Protection \u201cpxb\u201d or Level of Protection \u201cpyb\u201d <br \/> 6.3 For Level of Protection \u201cpzc\u201d <br \/> 7 Safety provisions and safety devices (except for static pressurization) <br \/> 7.1 Suitability of safety devices for hazardous area <br \/> 7.2 Integrity of safety devices  <\/td>\n<\/tr>\n<tr>\n<td><b>40<b><\/td>\n<td>7.3 Provider of safety devices <br \/> 7.4 Pressurization System evaluated as associated equipment <br \/> 7.4.1 Pressurization systems for Level of Protection \u201dpzc\u201d. <br \/> Table 3 \u2013 Safety devices based upon Level of Protection  <\/td>\n<\/tr>\n<tr>\n<td><b>41<b><\/td>\n<td>7.4.2 Pressurization systems for Level of Protection \u201dpyb\u201d. <br \/> 7.4.3 Pressurization systems for Level of Protection \u201dpxb\u201d. <br \/> 7.5 Sequence diagram for Level of Protection \u201cpxb\u201d <br \/> 7.6 Ratings for safety devices <br \/> 7.7 Group I and Group II Purging automated for Level of Protection \u201cpxb\u201d  <\/td>\n<\/tr>\n<tr>\n<td><b>42<b><\/td>\n<td>7.8 Group I or Group II \uf02d Purging criteria <br \/> 7.9 Group III \u2013 Cleaning <br \/> 7.10 Requirements when a minimum flow rate required <br \/> 7.11 Safety devices to detect minimum overpressure  <\/td>\n<\/tr>\n<tr>\n<td><b>43<b><\/td>\n<td>7.12 Value of minimum overpressure  <\/td>\n<\/tr>\n<tr>\n<td><b>44<b><\/td>\n<td>7.13 Pressurizing multiple enclosures <br \/> 7.14 Safety devices on doors and covers <br \/> 7.15 Equipment that may remain energized <br \/> 7.16 Equipment permitted within Level of Protection \u201cpyb\u201d  <\/td>\n<\/tr>\n<tr>\n<td><b>45<b><\/td>\n<td>8 Safety provisions and safety devices for static pressurization <br \/> 8.1 Suitability of safety devices for hazardous area <br \/> 8.2 Protective gas <br \/> 8.3 Internal sources of release <br \/> 8.4 Group I and Group II Filling procedure <br \/> 8.5 Group III Filling Procedure <br \/> 8.6 Safety devices <br \/> 8.7 Equipment that may remain energized <br \/> 8.8 Overpressure  <\/td>\n<\/tr>\n<tr>\n<td><b>46<b><\/td>\n<td>9 Supply of protective gas <br \/> 9.1 Backup supply  <br \/> 9.2 Independent supplies <br \/> 9.3 Type of gas <br \/> 9.4 Temperature <br \/> 10 Pressurized equipment with an internal source of release <br \/> 11 Release conditions <br \/> 11.1 No release  <\/td>\n<\/tr>\n<tr>\n<td><b>47<b><\/td>\n<td>11.2 Limited release of a gas or vapour <br \/> 11.3 Limited release of a liquid <br \/> 12 Design requirements for the containment system <br \/> 12.1 General design requirements <br \/> 12.2 Infallible containment system  <\/td>\n<\/tr>\n<tr>\n<td><b>48<b><\/td>\n<td>12.3 Containment system with a limited release <br \/> 13 Protective gas and pressurizing techniques when there is an internal source of release <br \/> 13.1 General  <\/td>\n<\/tr>\n<tr>\n<td><b>49<b><\/td>\n<td>13.2 Pressurization with leakage compensation <br \/> 13.2.1 No release <br \/> 13.2.2 Limited release of a gas or liquid <br \/> 13.3 Pressurization with dilution <br \/> 13.3.1 General <br \/> 13.3.2 No release <br \/> Table 4 \u2013 Protective gas requirements for a pressurized enclosure with a containment system  <\/td>\n<\/tr>\n<tr>\n<td><b>50<b><\/td>\n<td>13.3.3 Limited release of a gas or vapour <br \/> 13.3.4 Limited release of a liquid <br \/> 14 Ignition-capable equipment <br \/> 15 Internal hot surfaces <br \/> Table 5 \u2013 Equipment Protection Levels permitted within the dilution area based upon the Level of Protection of the pressurized enclosure  <\/td>\n<\/tr>\n<tr>\n<td><b>51<b><\/td>\n<td>16 Type verification and tests <br \/> 16.1 Determining the maximum overpressure rating <br \/> 16.2 Maximum overpressure test <br \/> 16.3 Leakage test <br \/> 16.3.1 Other than static pressurization <br \/> 16.3.2 Static pressurization   <\/td>\n<\/tr>\n<tr>\n<td><b>52<b><\/td>\n<td>16.4 Purging test for pressurized enclosures with no internal source of release and filling procedure test for static pressurization <br \/> 16.4.1 General <br \/> 16.4.2 Pressurized enclosure where the protective gas is air <br \/> 16.4.3 Pressurized enclosure where the protective gas is inert <br \/> 16.4.4 Pressurized enclosure where the protective gas may be either air or an inert gas with a density equal to air \u00b110 % <br \/> 16.4.5 Filling procedure test for a pressurized enclosure protected by static pressurization <br \/> 16.5 Purging and dilution tests for a pressurized enclosure with an internal source of release <br \/> 16.5.1 Test gas  <\/td>\n<\/tr>\n<tr>\n<td><b>53<b><\/td>\n<td>16.5.2 Pressurized enclosure where the flammable substance has less than 2 % (V\/V) oxygen and the protective gas is inert <br \/> 16.5.3 Pressurized enclosure with pressurization by continuous flow, containment system with less than 21 % (V\/V) oxygen and the protective gas is inert  <\/td>\n<\/tr>\n<tr>\n<td><b>54<b><\/td>\n<td>16.5.4 Pressurized enclosure where the flammable substance is not a liquid, pressurization by continuous flow and the protective gas is air <br \/> 16.6 Verification of minimum overpressure  <\/td>\n<\/tr>\n<tr>\n<td><b>55<b><\/td>\n<td>16.7 Tests for an infallible containment system <br \/> 16.7.1 Overpressure test <br \/> 16.7.2 Infallibility test <br \/> 16.8 Overpressure test for a containment system with a limited release <br \/> 17 Routine tests <br \/> 17.1 Functional test <br \/> 17.2 Leakage test <br \/> 17.3 Tests for an infallible containment system <br \/> 17.4 Test for a containment system with a limited release <br \/> 18 Marking <br \/> 18.1 General  <\/td>\n<\/tr>\n<tr>\n<td><b>56<b><\/td>\n<td>18.2 Identifying as pressurized <br \/> 18.3 Supplementary marking <br \/> 18.4 Internal source of release <br \/> 18.5 Static pressurization <br \/> 18.6 Pressurization systems  <\/td>\n<\/tr>\n<tr>\n<td><b>57<b><\/td>\n<td>18.7 Warnings required in other clauses <br \/> 18.8 Overpressure limited by user <br \/> 18.9 Inert gas <br \/> Table 6 \u2013 Text of warning markings  <\/td>\n<\/tr>\n<tr>\n<td><b>58<b><\/td>\n<td>19 Instructions  <\/td>\n<\/tr>\n<tr>\n<td><b>59<b><\/td>\n<td>Annexes  <br \/> Annex A (normative) Purging and dilution tests <br \/> A.1 General <br \/> A.2 Criteria for compliance where the protective gas is air <br \/> A.3 Criteria for compliance where the protective gas is inert  <\/td>\n<\/tr>\n<tr>\n<td><b>60<b><\/td>\n<td>Annex B (informative) Examples of functional sequence diagram <br \/> Figures  <br \/> Figure B.1 \u2013 State diagram of a leakage-compensation purge control system <br \/> Table B.1 \u2013 Truth table of a leakage-compensation purge control system  <\/td>\n<\/tr>\n<tr>\n<td><b>62<b><\/td>\n<td>Annex C (informative) Examples of the changes in pressure in ducts and enclosures  <\/td>\n<\/tr>\n<tr>\n<td><b>63<b><\/td>\n<td>Figure C.1 \u2013 Protective gas outlet  <\/td>\n<\/tr>\n<tr>\n<td><b>64<b><\/td>\n<td>Figure C.2 \u2013 Pressurized enclosures with leakage compensation,enclosures without moving parts  <\/td>\n<\/tr>\n<tr>\n<td><b>65<b><\/td>\n<td>Figure C.3 \u2013 Pressurized enclosures with leakage compensation, rotating electrical machine with an internal cooling fan   <\/td>\n<\/tr>\n<tr>\n<td><b>66<b><\/td>\n<td>Figure C.4 \u2013 Pressurized enclosure with a leakage compensation, rotating electrical machine with an external cooling fan  <\/td>\n<\/tr>\n<tr>\n<td><b>67<b><\/td>\n<td>Annex D (informative) Information to be provided to the user <br \/> D.1 General <br \/> D.2 Ducting of protective gas <br \/> D.2.1 Location of inlet <br \/> D.2.2 Ducting between pressurized enclosure and inlet <br \/> D.2.3 Outlets for protective gas  <\/td>\n<\/tr>\n<tr>\n<td><b>68<b><\/td>\n<td>D.2.4 Additional purge time to account for ducting <br \/> D.2.5 Temperature of protective gas at the inlet <br \/> D.3 Power for protective gas supply <br \/> D.4 Static pressurization <br \/> D.5 Enclosures with a containment system <br \/> D.6 Enclosure maximum overpressure  <\/td>\n<\/tr>\n<tr>\n<td><b>69<b><\/td>\n<td>Annex E (normative) Classification of the type of release within enclosures <br \/> E.1 General <br \/> E.2 No normal release, no abnormal release  <br \/> E.3 No normal release, limited abnormal release  <br \/> E.4 Limited normal release  <\/td>\n<\/tr>\n<tr>\n<td><b>70<b><\/td>\n<td>Annex F (informative) Examples for the use of the dilution area concept <br \/> Figure F.1 \u2013 Diagram showing the use of the dilution area concept to simplify the purge and dilution test requirements  <\/td>\n<\/tr>\n<tr>\n<td><b>71<b><\/td>\n<td>Figure F.2 \u2013 Diagram showing the use of the infallible containment system concept to simplify the purging and dilution requirements around ICE <br \/> Figure F.3 \u2013 Diagram showing the use of internal partitions around the potential source of release to simplify the purging and dilution requirements around ICE located outside the partitions  <\/td>\n<\/tr>\n<tr>\n<td><b>72<b><\/td>\n<td>Annex G (normative) Internal Cells and Batteries for Level of Protection \u201cpxb\u201d and Level of Protection \u201cpyb\u201d <br \/> G.1 General Requirements <br \/> G.1.1 General <br \/> G.1.2 Accepted Electrochemical Systems <br \/> G.1.3 Secondary cells and secondary batteries <br \/> G.1.4 Mechanical Protection  <\/td>\n<\/tr>\n<tr>\n<td><b>73<b><\/td>\n<td>G.2 Electrical Protection by energy limiting circuits. <br \/> G.2.1 Assessing as energy limited <br \/> G.2.2 Protective Components <br \/> G.2.3 Preventing excessive gas pressure  <\/td>\n<\/tr>\n<tr>\n<td><b>74<b><\/td>\n<td>G.3 Additional requirements for Primary batteries <br \/> G.3.1 Prevention of reverse charging.  <br \/> G.3.2 Prevention of accidental charging of primary batteries <br \/> Figure G.1 \u2013 Reverse charging protection <br \/> Figure G.2 \u2013 Accidental charging protection  <\/td>\n<\/tr>\n<tr>\n<td><b>75<b><\/td>\n<td>G.4 Additional requirements for secondary batteries <br \/> G.4.1 Charging of secondary batteries inside the pressurized housing <br \/> G.5 Specific requirements for Inherently Safe (IhS) cells and batteries  <\/td>\n<\/tr>\n<tr>\n<td><b>76<b><\/td>\n<td>G.6 Equipment located inside a pressurized enclosure connected to a battery which is also located inside the pressurized enclosure and not disconnected in the event of loss of pressurization <br \/> G.6.1 General <br \/> G.6.2 Circuit Isolation <br \/> G.6.3 Intrinsically safe battery or inherently safe battery used with \u201cEx\u201d equipment <br \/> G.6.4 Intrinsically Safe or Inherently Safe battery with non-&#8220;Ex&#8221; equipment.   <\/td>\n<\/tr>\n<tr>\n<td><b>78<b><\/td>\n<td>G.7 Supplementary marking and constructional requirements for pressurized enclosures containing one or more cells or batteries <br \/> G.7.1 General <br \/> G.7.2 Battery removal warning <br \/> G.7.3 Batteries requiring routine maintenance <br \/> G.8 Type tests <br \/> G.8.1 Voltage <br \/> G.8.2 Short circuit test for an Inherently Safe Cell or Battery <br \/> G.8.3 Full load test for other than Inherently safe batteries  <\/td>\n<\/tr>\n<tr>\n<td><b>79<b><\/td>\n<td>Annex H (normative) Internal Cells and Batteries for Level of Protection \u201cpzc\u201d <br \/> H.1 General Requirements <br \/> H.1.1 General <br \/> H.1.2 Accepted Electrochemical Systems <br \/> H.1.3 Secondary cells and secondary batteries <br \/> H.1.4 Mechanical Protection  <\/td>\n<\/tr>\n<tr>\n<td><b>80<b><\/td>\n<td>H.2 Equipment located inside a pressurized enclosure connected to a battery which is also located inside the pressurized enclosure and is not disconnected when power is removed from the enclosure.  <br \/> H.3 Supplementary marking and constructional requirements for pressurized enclosures containing one or more cells or batteries <br \/> H.3.1 General <br \/> H.3.2 Battery removal warning <br \/> H.3.3 Batteries requiring routine maintenance  <\/td>\n<\/tr>\n<tr>\n<td><b>81<b><\/td>\n<td>Bibliography  <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":"<p><b>Explosive atmospheres &#8211; Equipment protection by pressurized enclosure &#8220;p&#8221;<\/b><\/p>\n<table class=\"shortdes-table\" style=\"width: 100%\" border=\"0\" cellspacing=\"0\" cellpadding=\"0\">\n<tbody>\n<tr>\n<td>Published By<\/td>\n<td>Publication Date<\/td>\n<td>Number of Pages<\/td>\n<\/tr>\n<tr>\n<td><a href=\"https:\/\/pdfstandards.shop\/product-category\/publishers\/bsi\/\"><b>BSI<\/b><\/a><\/td>\n<td>2018<\/td>\n<td>82<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"featured_media":239411,"template":"","meta":{"rank_math_lock_modified_date":false,"ep_exclude_from_search":false},"product_cat":[551,2641],"product_tag":[],"class_list":{"0":"post-239404","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\/239404","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\/239411"}],"wp:attachment":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media?parent=239404"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_cat?post=239404"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_tag?post=239404"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}