1、 IEC 60079-13 Edition 2.0 2017-05 INTERNATIONAL STANDARD Explosive atmospheres Part 13: Equipment protection by pressurized room “p“ and artificially ventilated room “v“ IEC 60079-13:2017-05(en) THIS PUBLICATION IS COPYRIGHT PROTECTED Copyright 2017 IEC, Geneva, Switzerland All rights reserved. Unle
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10、.iec.ch/csc If you wish to give us your feedback on this publication or need further assistance, please contact the Customer Service Centre: csciec.ch. IEC 60079-13 Edition 2.0 2017-05 INTERNATIONAL STANDARD Explosive atmospheres Part 13: Equipment protection by pressurized room “p“ and artificially
11、 ventilated room “v“ INTERNATIONAL ELECTROTECHNICAL COMMISSION ICS 29.260.20 ISBN 978-2-8322-4326-8 Registered trademark of the International Electrotechnical Commission Warning! Make sure that you 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 Penetrati
13、ons and seals . 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 cle
14、an air 16 5.3 Environmental 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 explos
15、ive atmosphere from entering through 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
16、operations of the purging safety devices . 20 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 Verificatio
17、n 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 of the safety devices 22 7 Requirem
18、ents for artificially ventilated rooms . 22 7.1 General . 22 7.1.1 Design . 22 7.1.2 Source of clean air 22 7.1.3 Minimum flow rate . 23 7.1.4 Ventilation system . 23 7.1.5 Air consuming device . 24 7.1.6 Safety actions when ventilation system fails 24 7.1.7 Energizing the artificially ventilated ar
19、ea 24 7.2 Purging of artificially ventilated rooms . 25 7.2.1 General . 25 7.2.2 Sequence of operations of the purging safety devices . 25 7.3 Minimum safety provisions, safety devices and electrical disconnects . 25 7.3.1 Safety devices . 25 7.3.2 Safety devices based upon equipment protection leve
20、l 25 7.3.3 Artificial ventilation protection 26 7.3.4 Gas detectors 26 7.4 Loss of artificial ventilation 26 7.5 Verification for artificially ventilated rooms 27 7.5.1 General . 27 7.5.2 Tests . 27 7.5.3 Purging test . 27 7.5.4 Minimum ventilation flow rate test 27 7.5.5 Confirmation of the ratings
21、 of the safety devices 27 7.5.6 Verification of sequence of operation of the safety devices 27 7.5.7 Testing of ventilation system . 28 8 Marking . 28 8.1 General . 28 8.2 Marking of pressurized rooms . 28 8.3 Marking for artificially ventilated rooms . 29 9 Instructions 30 9.1 General . 30 9.2 Tech
22、nical documentation for pressurized rooms 30 9.3 Technical documentation for artificially ventilated rooms . 30 9.4 Technical documentation for rooms protected by pressurization and artificial ventilation combined . 31 9.5 Modifications. 31 Annex A (informative) Maintenance 32 A.1 Periodic verificat
23、ion 32 A.2 Modifications. 32 4 IEC 60079-13:2017 IEC 2017 Annex B (informative) Guidelines when pressurization or artificial ventilation is not immediately restored. 33 Annex C (informative) Examples of applications and associated guidelines . 34 C.1 Examples of applications 34 C.2 Guidelines for ga
24、s turbine enclosure/package . 34 Bibliography 35 Table 1 Exclusion of specific clauses or subclauses of IEC 60079-0 9 Table 2 Safety devices for pressurized rooms 21 Table 3 Safety actions for artificial ventilation failure 24 Table 4 Required safety devices for artificial ventilation . 26 IEC 60079
25、-13:2017 IEC 2017 5 INTERNATIONAL ELECTROTECHNICAL COMMISSION _ EXPLOSIVE ATMOSPHERES Part 13: Equipment protection by pressurized room “p“ and artificially ventilated room “v“ FOREWORD 1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
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35、e references cited in this publication. Use of the referenced publications is indispensable for the correct application of this publication. 9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of patent rights. IEC shall not be held responsib
36、le for identifying any or all such patent rights. International Standard IEC 60079-13 has been prepared by IEC technical committee 31: Equipment for explosive atmospheres This second edition cancels and replaces the first edition published in 2010. This edition constitutes a technical revision. This
37、 edition includes the following significant technical changes with respect to the previous edition: a) modification of the title of this document to include artificially ventilated room “v“ in addition to pressurized room “p“; b) addition of types of protection “pb“, “pc“, and “vc“ and removal of ty
38、pes of protection “px“, “py“, “pz“ and “pv“; c) definition of the differences between pressurization and artificial ventilation types of protection; 6 IEC 60079-13:2017 IEC 2017 d) removal of protection of rooms with an inert gas or a flammable gas from the scope of this document; e) addition of an
39、informative annex to include examples of applications where types of protection pressurization or artificial ventilation or pressurization and artificial ventilation can be used and associated guidelines. The text of this document is based on the following documents: FDIS Report on voting 31/1309/FD
40、IS 31/1317/RVD Full information on the voting for the approval of this document can be found in the report on voting indicated in the above table. This publication has been drafted in accordance with the ISO/IEC Directives, Part 2. This document is to be used in conjunction with the principles of ha
41、zardous area classification from IEC 60079-10-1 and artificial ventilation for the protection of analyser(s) houses from IEC 60079-16. A list of all parts in the IEC 60079 series, published under the general title Explosive atmospheres, can be found on the IEC website. The committee has decided that
42、 the contents of this publication will remain unchanged until the stability date indicated on the IEC website under “http:/webstore.iec.ch“ in the data related to the specific publication. At this date, the publication will be reconfirmed, withdrawn, replaced by a revised edition, or amended. A bili
43、ngual version of this publication may be issued at a later date. IEC 60079-13:2017 IEC 2017 7 INTRODUCTION This part of IEC 60079 gives requirements for the design, construction, assessment, verification and marking of rooms used to protect internal equipment by pressurization or artificial ventilat
44、ion or both as applicable when located in an explosive gas atmosphere or combustible dust atmosphere hazardous area with or without an internal source of a flammable gas or vapour. It also includes a room located in a non-hazardous area that has an internal source of release of a flammable gas or va
45、pour. This document deals with rooms that are partially constructed in a manufacturers facility and intended to have the final installation completed on-site, as well as rooms that are constructed completely on-site. Rooms partially constructed in a manufacturers facility may include third- party ve
46、rification. For rooms built on-site, this document can be used by plant operators as a guide for assessment of those facilities. This document represents a major technical revision of the requirements for equipment protection by pressurized room “p“ and artificially ventilated room “v“ and should be
47、 considered as introducing all new requirements. 8 IEC 60079-13:2017 IEC 2017 EXPLOSIVE ATMOSPHERES Part 13: Equipment protection by pressurized room “p“ and artificially ventilated room “v“ 1 Scope This part of IEC 60079 gives requirements for the design, construction, assessment, verification and
48、marking of rooms used to protect internal equipment: located in a Zone 1 or Zone 2 or Zone 21 or Zone 22 explosive atmosphere (an area normally requiring an equipment protection level (EPL) Gb, Gc, Db or Dc) without an internal source of gas/vapour release and protected by pressurization; located in
49、 a Zone 2 explosive atmosphere (an area normally requiring EPL Gc) with or without an internal source of gas/vapour release and protected by artificial ventilation; located in a non-hazardous area, containing an internal source of gas/vapour release and protected by artificial ventilation; located in a Zone 1 or Zone 2 or Zone 21 or Zone 22 explosive atmosphere (an area normally requiring EPL Gb, Gc, Db or Dc), containing an internal source of gas/vapour release and protected by both press
