1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationExplosive atmospheresPart 13: Equipment protection by pressurized room “p”BS EN 60079-13:2010National forewordThis British Standard is the UK implementation of EN 60079-13:2010.
2、It isidentical to IEC 60079-13:2010.The UK participation in its preparation was entrusted by Technical CommitteeGEL/31, British Electrotechnical Committee, to Subcommittee GEL/31/X,Equipment for explosive atmospheres.A list of organizations represented on this committee can be obtained onrequest to
3、its secretary.This publication does not purport to include all the necessary provisions of acontract. Users are responsible for its correct application. BSI 2011ISBN 978 0 580 60924 4ICS 29.260.20Compliance with a British Standard cannot confer immunity fromlegal obligations.This British Standard wa
4、s published under the authority of the StandardsPolicy and Strategy Committee on 31 May 2011.Amendments issued since publicationAmd. No. Date Text affectedBRITISH STANDARDBS EN 60079-13:2010EUROPEAN STANDARD EN 60079-13 NORME EUROPENNE EUROPISCHE NORM December 2010 CENELEC European Committee for Ele
5、ctrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung Management Centre: Avenue Marnix 17, B - 1000 Brussels 2010 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members. Ref. No
6、. EN 60079-13:2010 E ICS 29.260.20 English version Explosive atmospheres - Part 13: Equipment protection by pressurized room “p“ (IEC 60079-13:2010) Atmosphres explosives - Partie 13: Protection du matriel par salle surpression interne “p“ (CEI 60079-13:2010) Explosionsfhige Atmosphre - Teil 13: Ger
7、teschutz durch berdruckgekapselte Rume (IEC 60079-13:2010) This European Standard was approved by CENELEC on 2010-12-01. CENELEC members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard wi
8、thout any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the Central Secretariat or to any CENELEC member. This European Standard exists in three official versions (English, French, German). A version in any other lang
9、uage made by translation under the responsibility of a CENELEC member into its own language and notified to the Central Secretariat has the same status as the official versions. CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Rep
10、ublic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. BS EN 60079-13:2010EN 60079-13:2010 - 2 - Fore
11、word The text of document 31/878/FDIS, future edition 1 of IEC 60079-13, prepared by IEC TC 31, Equipment for explosive atmospheres, was submitted to the IEC-CENELEC parallel vote and was approved by CENELEC as EN 60079-13 on 2010-12-01. This part of EN 60079 is to be read in conjunction with EN 600
12、79-0. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN and CENELEC shall not be held responsible for identifying any or all such patent rights. The following dates were fixed: latest date by which the EN has to be implemented a
13、t national level by publication of an identical national standard or by endorsement (dop) 2011-09-01 latest date by which the national standards conflicting with the EN have to be withdrawn (dow) 2013-12-01 Annex ZA has been added by CENELEC. _ Endorsement notice The text of the International Standa
14、rd IEC 60079-13:2010 was approved by CENELEC as a European Standard without any modification. In the official version, for Bibliography, the following notes have to be added for the standards indicated: IEC 60079-17 NOTE Harmonized as EN 60079-17. IEC 60079-20-1 NOTE Harmonized as EN 60079-20-1. IEC
15、 60079-29 series NOTE Harmonized in EN 60079-29 series (partially modified). IEC 60529 NOTE Harmonized as EN 60529. IEC 61285 NOTE Harmonized as EN 61285. IEC 61511 series NOTE Harmonized in EN 61511 series (not modified). _ BS EN 60079-13:2010- 3 - EN 60079-13:2010 Annex ZA (normative) Normative re
16、ferences to international publications with their corresponding European publications 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 edition of the referenced document
17、 (including any amendments) applies. NOTE When an international publication has been modified by common modifications, indicated by (mod), the relevant EN/HD applies. Publication Year Title EN/HD Year IEC 60050-426 - International Electrotechnical Vocabulary - Part 426: Equipment for explosive atmos
18、pheres - - IEC 60079-0 - Explosive atmospheres - Part 0: Equipment - General requirements EN 60079-0 - IEC 60079-2 - Explosive atmospheres - Part 2: Equipment protection by pressurized enclosure “p“ EN 60079-2 - IEC 60079-10-1 - Explosive atmospheres - Part 10-1: Classification of areas - Explosive
19、gas atmospheres EN 60079-10-1 - IEC 60695-11-10 - Fire hazard testing - Part 11-10: Test flames - 50 W horizontal and vertical flame test methods EN 60695-11-10 - BS EN 60079-13:2010 2 60079-13 IEC:2010 CONTENTS 1 Scope.7 2 Normative references .10 3 Terms and definitions .10 4 Requirements for room
20、s .13 4.1 General .13 4.2 Construction13 4.3 Mechanical strength 14 4.4 Openings, penetrations and seals .14 4.5 Doors 14 4.6 Inlets and outlets.14 4.7 Ducts 14 5 Clean air supply .14 5.1 Source of clean air 14 5.2 Environmental and air temperature conditions .15 5.3 Heating, ventilation and air con
21、ditioning services 15 5.4 Minimum flow rate .15 6 Purging and cleaning15 6.1 General .15 6.2 Gases Purging15 6.2.1 General .15 6.2.2 Purge volume 15 6.2.3 Purging flow rate .15 6.2.4 Sequence of operations of the purging safety devices for type of protection px16 6.2.5 Enclosures within the room16 6
22、.3 Dusts Cleaning.16 7 Temperature limits16 8 Minimum safety provisions, safety devices and electrical disconnects 16 8.1 Safety devices.16 8.2 Safety devices based upon type of protection17 8.3 Gas detectors18 8.4 Failure of the pressurization system 18 9 Pressurized room in a hazardous area and wi
23、th no internal source of flammable substance.18 9.1 General .18 9.2 Protective gas .18 9.2.1 Type of protection px.18 9.2.2 Type of protection py.18 9.2.3 Type of protection pz.19 9.3 Pressurization system .19 9.3.1 Room pressure differential.19 9.3.2 Power for pressurization system 19 9.4 Preventin
24、g the explosive atmosphere from entering an open door .19 9.5 Airlock.19 9.6 Outward air velocity through a door .20 BS EN 60079-13:201060079-13 IEC:2010 3 9.7 Air consuming device 20 9.8 Action when pressurization system fails 20 9.8.1 Type of protection px.20 9.8.2 Types of protection py and pz20
25、9.9 Re-energizing the room .21 10 Pressurized room in a hazardous area and containing an internal source of flammable substance21 10.1 Evaluation of internal sources of a flammable substance.21 10.1.1 Flammable substance assessment 21 10.1.2 Assessment of release 21 10.1.3 Release Additional require
26、ments 21 10.1.4 Adequate dilution.21 10.2 Applicability of Clause 9 21 10.3 Containment system21 10.4 Sample lines .21 10.5 Types of anticipated releases 22 10.5.1 General .22 10.5.2 No release.22 10.5.3 Negligible release22 10.5.4 Limited release22 10.5.5 Unlimited release.22 10.6 Safety measures .
27、23 10.7 Minimum flow rate for dilution23 10.8 Warning to prevent entry into a room.25 10.9 Air distribution .25 10.10 Protective gas .25 10.11 Additional pressurization system requirements when inert gas is used 25 11 Pressurized room in a non-hazardous area with internal source of flammable substan
28、ce (type of protection pv)25 11.1 Applicability of Clause 9 26 11.2 Applicability of Clause 10 26 11.3 Loss of flow of the protective gas 26 11.4 Safety devices.26 12 Verification .26 12.1 General .26 12.2 Sequence of tests .26 12.3 Mechanical strength test26 12.4 Overpressure test27 12.5 Purging te
29、st.27 12.6 Minimum pressure differential test for types of protection px, py and pz 27 12.7 Minimum flow rate test 27 12.8 Overpressure test for containment systems with limited release 27 12.9 Confirmation of the ratings of the safety devices .27 12.10 Verification sequence of operation of the safe
30、ty devices27 13 Marking 28 14 Technical documentation28 Annex A (normative) Containment system30 Annex B (informative) Maintenance .33 BS EN 60079-13:2010 4 60079-13 IEC:2010 Annex C (informative) Guidelines when pressurization not immediately restored .34 Annex D (normative) Classification of the t
31、ype of release within rooms35 Bibliography37 Table 1 Exclusion of specific clauses of IEC 60079-0.8 Table 2 Safety devices based on type of protection .17 Table 3 Safety devices, loss of pressurization or use of inert protective gas 24 Table 4 Protective gas requirements for a pressurized room with
32、an internal flammable substance 25 BS EN 60079-13:201060079-13 IEC:2010 7 EXPLOSIVE ATMOSPHERES Part 13: Equipment protection by pressurized room “p” 1 Scope This part of IEC 60079 gives requirements for the design, construction, assessment and testing and marking of rooms protected by pressurizatio
33、n in: a room located in an explosive gas atmosphere or explosive dust atmosphere hazardous area that does not include an internal source of a flammable substance; a room located in an explosive gas atmosphere or explosive dust atmosphere hazardous area that includes an internal source of a flammable
34、 substance; a room located in a non-hazardous area that includes an internal source of a flammable substance. NOTE If ventilation is used and pressurization is not used, then this part of IEC 60079 does not apply. The situation is covered by the requirements of IEC 60079-10-1. A room may be a single
35、 room, multiple rooms, a complete building or a room contained within a building and includes inlet and outlet ducts. This part of IEC 60079 also includes requirements for associated equipment, safety devices and controls necessary to ensure that pressurization is established and maintained. This pa
36、rt of IEC 60079 covers rooms or buildings that are constructed or assembled on site, which may be either on land or off-shore, designed to facilitate the entry of personnel and primarily intended for installation by an end-user and verification on site. The room may be located in an explosive gas at
37、mosphere or a explosive dust atmosphere requiring equipment protection levels (EPL) Gb, Db, Gc or Dc. This part of IEC 60079 does not specify the methods that may be required to ensure adequate air quality for personnel with regard to toxicity and temperature within the room. NOTE 1 Whilst the scope
38、 of this part of IEC 60079 does not address toxicity it is vital that proper consideration is given to this aspect to ensure the safety of personnel. National regulations and requirements should be observed in this regard. NOTE 2 There is a related standard IEC60079-2 (Equipment protection by pressu
39、rized enclosure) covering the different conditions encountered when using the pressurization technique. NOTE 3 Maintenance needs are contained in Annex B until they are included IEC 60079-17. NOTE 4 For the purposes of this part of IEC 60079, the terms “lower flammable limit (LFL)“ and “lower explos
40、ive limit (LEL)“ are deemed to be synonymous, and likewise the terms “upper flammable limit (UFL)“ and “upper explosive limit (UEL)“ are deemed to be synonymous. For ease of reference, the two abbreviations LFL and UFL may be used hereinafter to denote these two sets of terms. It should be recognize
41、d that particular authorities having jurisdiction may have overriding requirements that dictate the use of one of these sets of terms and not the other. This part of IEC 60079 supplements and modifies the general requirements of IEC 60079-0, except as indicated in Table 1. Where a requirement of thi
42、s standard conflicts with a requirement of IEC 60079-0, the requirement of this standard takes precedence. BS EN 60079-13:2010 8 60079-13 IEC:2010 Table 1 Exclusion of specific clauses of IEC 60079-0 Clause of IEC 60079-0 Ed. 4.0 (2004) (Informative)Ed. 5.0 (2007) (Informative) Clause / subclause ti
43、tle (Normative) 4 4 Equipment grouping Applies 4.1 4.1 Group I Applies4.2 4.2 Group II Applies 4.3 4.3 Group III Applies 4.4 4.4 Equipment for a particular explosive atmosphere Applies 5.1 5.1 Environmental influences Applies 5.1.1 5.1.1 Ambient temperature Applies 5.1.2 5.1.2 External source of hea
44、ting or cooling Applies 5.2 5.2 Service temperature Applies 5.3.1 5.3.1 Determination of maximum surface temperature Applies 5.3.2.1 5.3.2.1 Group I electrical equipment Applies 5.3.2.2 5.3.2.2 Group II electrical equipment Applies 5.3.2.3 5.3.2.3 Group III electrical equipment Applies 5.3.3 5.3.3 S
45、mall component temperature for Group I and Group II electrical equipment Applies 6.1 6.1 GeneralApplies 6.2 6.2 Mechanical strength Excluded 6.3 6.3 Opening timesExcluded 6.4 6.4 Circulating currents Excluded 6.5 6.5 Gasket retention Excluded 6.6 6.6 Electromagnetic and ultrasonic radiating equipmen
46、t Excluded 7 7 Non-metallic enclosures and parts of enclosure Excluded 8 8 Metallic enclosures and metallic parts of enclosures Excluded 9 9 Fasteners Excluded 10 10 Interlocking devices Excluded 11 11 Bushings Excluded 12 12 Materials used for cementing Excluded 13 13 Ex components Excluded 14 14 C
47、onnection facilities and termination compartments Excluded 15 15 Connection facilities for earthing and bonding conductors Excluded 16 16 Entries into enclosuresExcluded 17 17 Supplementary requirements for rotating electrical machines Excluded 18 18 Supplementary requirements for switchgear Exclude
48、d 19 19 Supplementary requirements for fuses Excluded BS EN 60079-13:201060079-13 IEC:2010 9 Clause of IEC 60079-0 Ed. 4.0 (2004) (Informative)Ed. 5.0 (2007) (Informative) Clause / subclause title (Normative) 20 20 Supplementary requirements for plugs and sockets Excluded 21 21 Supplementary require
49、ments for luminaires Excluded 22 22 Supplementary requirements for caplights and handlights Excluded 23 23 Equipment incorporating cells and batteries Excluded 24 24 Documentation Applies 25 25 Compliance of prototype or sample with documents Excluded 26 26 Type tests Excluded 27 27 Routine tests Applies 28 28 Manufacturers responsibility Applies29.1 29.1 Location Applies 29.2 29.2 General Applies NR 29.3 Ex marking for explosive gas atmospheres Applies NR 29.4 Ex markin
