1、 IEC 60079-13 Edition 2.0 2017-05 INTERNA TIONAL STA NDA RD Explosiv e atmospheres Part 13:Equipment protection by pressurized room p and artificially v entilated room v IEC 60079-13:2017-05(en)THIS PUBLICA TION IS COPYRIGHT PROTECTED Copyright 2017 IEC,Geneva,Switzerland All rights reserved.Unless
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10、 y ou wish to giv e us y our feedback on this publication or need further assistance,please contact the Customer Serv ice Centre:csciec.ch.IEC 60079-13 Edit ion 2.0 2017-05 INTER NA TIONAL STA NDA R D Explosiv e atmospheres Part 13:Equipment protection by pressurized room p and artificially v entila
11、ted room v INTERNATIONAL ELECTROTECHNICAL COMMISSION ICS 29.260.20 ISBN 978-2-8322-4326-8 R egist er ed tr ademar k of t he Int er national Electr ot echnical Commission W arning!Make sure that y ou obtained this publication from an authorized distributor.2 IEC 60079-13:2017 IEC 2017 CONTENTS FOREWO
12、RD.5 INTRODUCTION.7 1 Scope.8 2 Normative references.10 3 Terms and definitions.11 4 Requirements for all rooms.13 4.1 General.13 4.2 Type and level of protection.13 4.2.1 Pressurization p.13 4.2.2 Artificial ventilation v.14 4.3 Construction.14 4.4 Mechanical strength.14 4.5 Penetrations and seals.
13、14 4.6 Personnel access doors.14 4.7 Inlets and outlets.15 4.8 Ducts.15 4.9 Purging and cleaning.15 4.9.1 General.15 4.9.2 Gases Purging.15 4.9.3 Enclosures within the room.16 4.10 Ignition prevention under system failure.16 5 Clean air supply.16 5.1 General.16 5.2 Source of clean air.16 5.3 Environ
14、mental and air temperature conditions.17 5.4 Heating,ventilation and air conditioning services.17 6 Requirements for pressurized rooms.17 6.1 General.17 6.1.1 Design.17 6.1.2 Source of clean air.17 6.1.3 Flow.17 6.1.4 Pressurization system.17 6.1.5 Preventing the explosive atmosphere from entering t
15、hrough an open door.18 6.1.6 Airlock.18 6.1.7 Outward air velocity through a door.18 6.1.8 Air consuming device.19 6.1.9 Action when pressurization system fails.19 6.1.10 Re-energizing the room.19 6.2 Purging of rooms.19 6.2.1 General.19 6.2.2 Sequence of operations of the purging safety devices.20
16、6.2.3 Dusts Cleaning.20 6.3 Minimum safety provisions,safety devices and electrical disconnects.20 6.3.1 Safety devices.20 6.3.2 Safety devices based upon level of protection.21 IEC 60079-13:2017 IEC 2017 3 6.3.3 Gas detectors.21 6.4 Verification for pressurized rooms.21 6.4.1 General.21 6.4.2 Tests.21 6.4.3 Overpressure test.22 6.4.4 Purging test.22 6.4.5 Minimum pressure differential test.22 6.4.6 Confirmation of the ratings of the safety devices.22 6.4.7 Verification of sequence of operation
