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1、| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | BRITISH STANDARD BS EN 50016 : 1996 The Eu
2、ropean Standard EN 50016 : 1995 has the status of a British Standard ICS 29.260.20 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW Electrical apparatus for potentially explosive atmospheres Pressurized apparatus p Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 06 07:19:30
3、 GMT+00:00 2006, Uncontrolled Copy, (c) BSI This British Standard, having been prepared under the direction of the Electrotechnical Sector Board, was published under the authority of the Standards Board and comes into effect on 15 November 1996 BSI 1996 The following BSI references relate to the wor
4、k on this standard: Committee reference GEL/31 Draft for comment 91/31014 DC ISBN 0 580 25840 8 BS EN 50016 : 1996 Amendments issued since publication Amd. No.DateText affected Committees responsible for this British Standard The preparation of this British Standard was entrusted to Technical Commit
5、tee GEL/31, Electrical apparatus for explosive atmospheres, upon which the following bodies were represented: British Cable Makers Confederation British Gas plc British Lighting Association for the Preparation of Standards (BRITLAPS) Confederation of United Kingdom Coal Producers Council for Electri
6、cal Equipment for Flammable Atmospheres (BEAMA) Electrical Trace Heating Industrial Council (ETHIC) Electrical Contractors Association Electroheat Manufacturers Association of BEAMA (EMAB) Energy Industries Council Engineering Equipment and Materials Users Association ERATechnology Ltd. GAMBICA (BEA
7、MA Ltd.) Gland Manufacturers Technical Committee Health and Safety Executive Institute of Petroleum Lighting Industry Federation Ltd. Loss Prevention Council National Inspection Council for Electrical Installation Contracting Rotating Electrical Machines Association (BEAMA Ltd.) SIRA Ltd. Trades Uni
8、on Congress United Kingdom Offshore Operators Association Department of Trade and Industry (Standards Policy Unit) Marine Safety Agency Ministry of Defence Co-opted members Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 06 07:19:30 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN 50016 : 1996 B
9、SI 1996i Contents Page Committees responsibleInside front cover National forewordii Foreword2 Text of EN 500163 Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 06 07:19:30 GMT+00:00 2006, Uncontrolled Copy, (c) BSI ii BSI 1996 BS EN 50016 : 1996 National foreword This British Standard has been p
10、repared by Technical Committee GEL/31 and is the English language version of EN 50016 Electrical apparatus for potentially explosive atmospheres pressurized apparatus p, published by the European Committee for Electrotechnical Standardization (CENELEC). It supersedes BS 5501 : Part 3 : 1977, which i
11、s withdrawn. This standard should be read in conjunction with BS EN 50014 : 1993 Electrical apparatus for potentially explosive atmospheres General requirements, which it supplements. Product certification. Users of this British Standards are advised to consider the desirability of third party certi
12、fication of product conformity with this British Standard based on testing and continuing product surveillance, which may be coupled with assessment of a suppliers quality systems against the appropriate Part of BS EN ISO 9000. Enquiries as to the availability of third party certification schemes ar
13、e forwarded by BSI to the Association of British Certification Bodies. If a third party certification scheme does not already exist, users should consider approaching an appropriate body from the list of association members. Cross-references Publication referred toCorresponding British Standard EN 5
14、0014 : 1992BS EN 50014 : 1993 Electrical apparatus for potentially explosive atmospheres General requirements EN 50015 : 1994BS EN 50015 : 1994 Electrical apparatus for potentially explosive atmospheres Oil immersion o EN 50017 : 1994BS EN 50017 : 1994 Electrical apparatus for potentially explosive
15、atmospheres Powder filling q EN 50018 : 1994BS EN 50018 : 1995 Electrical apparatus for potentially explosive atmospheres Flameproof enclosure d EN 50019 : 1994BS EN 50019 : 1994 Electrical apparatus for potentially explosive atmospheres Increased safety e EN 50020 : 1994BS EN 50020 : 1995 Electrica
16、l apparatus for potentially explosive atmospheres Intrinsic safety i EN 50028 : 1987BS 5501 : Part 8 : 1988 Electrical apparatus for potentially explosive atmospheres Encapsulation m EN 50033 : 1991BS EN 50033 : 1991 Specification for construction and testing of miners caplamps in relation to the ri
17、sk of explosion, for mines susceptible to firedamp EN 50039 : 1980BS 5501 : Part 9 : 1982 Specification for intrinsically safe electrical systems i EN 60034-5 : 1986BS 4999 General requirements for rotating electrical machines Part 105 : 1988 Classification of degrees of protection provided by enclo
18、sures for rotating machinery EN 60529 : 1991BS EN 60529 : 1992 Specification for degrees of protection provided by enclosures (IP Code) HD 53.1 S2 : 1985BS EN 60034 Rotating electrical machines Part 1 : 1995 Rating and performance HD 214 S2 : 1980BS 5901 : 1980 Method for determining the comparative
19、 and the proof tracking indices of solid insulating materials under moist conditions Compliance with a British Standard does not of itself confer immunity from legal obligations. Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 06 07:19:30 GMT+00:00 2006, Uncontrolled Copy, (c) BSI CENELEC Europe
20、an Committee for Electrotechnical Standardization Comite Europe en de Normalisation Electrotechnique Europa isches Komitee fu r Elektrotechnische Normung Central Secretariat: rue de Stassart 35, B-1050 Brussels 1995 Copyright reserved to CEN members Ref. No. EN 50016 : 1995 E EUROPEAN STANDARDEN5001
21、6 NORME EUROPE ENNE EUROPA ISCHE NORM October 1995 ICS 29.260.20Supersedes EN 50016 : 1977 and its amendment Descriptors: Electrical apparatus, potentially explosive atmosphere, explosive atmosphere, explosion proofing, specific requirement, pressurized apparatus p English version Electrical apparat
22、us for potentially explosive atmospheres Pressurized apparatus p Mate riel e lectrique pour atmosphe res explosibles Surpression interne p Elektrische Betriebsmittel fu r explosionsgefa hrdete Bereiche U berdruckkapselung p This European Standard was approved by CENELEC on 1995-09-20. CENELEC member
23、s 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 without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application
24、 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 language made by translation under the responsibility of a CENELEC member into its own language and notified to the Central Secretariat has
25、 the same status as the official versions. CENELEC members are the national electrotechnical committees of Austria, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. Licensed Copy: sh
26、effieldun sheffieldun, na, Mon Nov 06 07:19:30 GMT+00:00 2006, Uncontrolled Copy, (c) BSI Page 2 EN 50016: 1995 BSI 1996 Foreword This European Standard was prepared by SC 31-7, Pressurization and other techniques, of Technical Committee CENELEC TC 31, Electrical apparatus for explosive atmospheres.
27、 The text of the draft was submitted to the formal vote and was approved by CENELEC as EN 50016 on 1995-09-20. This second edition of EN 50016 is based on the first edition but extended to also include pressurized enclosures with an internal source of release of flammable substances and static press
28、urization. This European Standard is to be read in conjunction with EN 50014 : 1992, Electrical apparatus for potentially explosive atmospheres General requirements, and with the second edition of the European Standards for the specific types of protection listed in the scope of EN 50014 : 1992. Thi
29、s European should not be considered in conjunction with any of the first edition standards and their amendments, published in 1977 or thereafter, listed in EN 50014. The following dates were fixed: latest date by which the EN has to be implemented at national level by publication of an identical nat
30、ional standard or by endorsement(dop) 1996-09-01 latest date by which the national standards conflicting with the EN have to be withdrawn(dow) 1996-09-01 Annexes designated normative are part of the body of the standard. Annexes designated informative are given for information only. In this standard
31、 annex D is normative and annexes A, B and C are informative. Contents Page General 1Scope3 2Definitions3 Requirements for pressurized enclosures 3Enclosures and ducting4 4Temperature limits5 5Safety provisions and safety devices (except for static pressurization)6 6Safety provisions and safety devi
32、ces for static pressurization7 7Supply of protective gas7 Additional requirements for pressurized enclosures with containment systems 8Introduction7 9Release conditions8 10Design requirements for the containment system8 11Protective gas and pressurizing technique9 12Ignition capable apparatus10 13In
33、ternal hot surfaces10 Verification and tests 14Type verification and tests10 15Routine tests13 Marking 16Marking13 Annexes A(informative) Ducting of protective gas14 B(informative) Infallibility test for a containment system18 C(informative) Function test of E surveillance circuits19 D(normative) Pu
34、rging and dilution tests20 Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 06 07:19:30 GMT+00:00 2006, Uncontrolled Copy, (c) BSI Page 3 EN 50016: 1995 BSI 1996 1) In preparation. 1 Scope 1.1 This European Standard contains the specific requirements for the construction and testing of electrical
35、 apparatus with type of protection pressurization p, intended for use in potentially explosive atmospheres. This European Standard supplements European Standard EN 50014, the requirements of which apply to electrical apparatus with type of protection p. 1.2 This European Standard includes the requir
36、ements for the construction of the enclosure and its associated components, including, if any, the inlet and outlet ducts for the protective gas, and for the safety provisions and devices necessary for the type of protection pressurization p. 1.3 This European Standard specifies the requirements for
37、 pressurized enclosures with or without an internal source of release, with the exceptions given in 1.5 and 1.6. 1.4 This European Standard specifies requirement for pressurized enclosures containing an unlimited source of release of flammable gas or vapour only where the unlimited source of release
38、 is from the surface of a liquid. 1.5 This European Standard does not contain requirements for pressurized rooms or analyser houses. 1.6 This European Standard does not contain the requirements for pressurized enclosures where, in a containment system with limited or unlimited release there is: a) a
39、ir with an oxygen content greater than normal; b) or oxygen in combination with inert gas in a proportion greater than 21 %. 1.7 Due to the safety factors incorporated in the type of protection the uncertainty of measurement inherent in good quality, regularly calibrated measurement equipment is con
40、sidered to have no significant detrimental effect and need not be taken into account when making the measurements necessary to verify compliance of the apparatus with the requirements of this standard. 1.8 Publications European Standards: EN 50014 : 1992Electrical apparatus for potentially explosive
41、 atmospheres. General requirements EN 50015 : 1994Electrical apparatus for potentially explosive atmospheres. Oil immersion o EN 50017 : 1994Electrical apparatus for potentially explosive atmospheres. Powder filling q EN 50018 : 1994Electrical apparatus for potentially explosive atmospheres. Flamepr
42、oof enclosures d EN 50019 : 1994Electrical apparatus for potentially explosive atmospheres. Increased safety e EN 50020 : 1994Electrical apparatus for potentially explosive atmospheres. Intrinsic safety i EN 50028 : 1987Electrical apparatus for potentially explosive atmospheres. Encapsulation m EN 5
43、0033 : 1991Electrical apparatus for potentially explosive atmospheres. Caplights for mines susceptible to firedamp EN 50039 : 1980Electrical apparatus for potentially explosive atmospheres. Intrinsically safe systems i EN 9541)Safety of machinery Safety related parts of control systems EN 60034-5 :
44、1986 Rotating electrical machines. Part 5. Classification of degrees of protection provided by enclosures for rotating machines (IEC 34-5 : 1981) EN 60529 : 1991Degrees of protection provided by enclosures (IP Code) (IEC 529 : 1989) HD 53.1 S2 : 1985 Rotating electrical machines Rating and performan
45、ce (IEC 34-1 : 1983) HD 214 S2 : 1980 Method for determining the comparative and the proof tracking indices of solid insulating materials under moist conditions (IEC 112 : 1979) 2 Definitions The following definitions specific to type of protection pressurization p, are applicable in this European S
46、tandard; they supplement the definitions which are given in EN 50014. 2.1 type of protection pressurization p The technique of applying a protective gas to an enclosure in order to prevent the formation of an explosive atmosphere inside the enclosure by maintaining an overpressure against the surrou
47、nding atmosphere, and where necessary by using dilution. 2.2 pressurized enclosure An enclosure in which a protective gas is maintained at a pressure greater than that of the external atmosphere. Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 06 07:19:30 GMT+00:00 2006, Uncontrolled Copy, (c) B
48、SI Page 4 EN 50016: 1995 BSI 1996 2.3 protective gas Air or inert gas used for purging and maintaining an overpressure and, if required, dilution. NOTE. For the purpose of this standard inert gas means nitrogen, carbon dioxide argon or any gas which, when mixed with oxygen in the ratio 4:1 as found
49、in air, does not make the ignition and flammability properties, such as explosive limits, more onerous. 2.4 purging The operation of passing a quantity of protective gas through the pressurized enclosure and ducts, so that a) when the protective gas is air, any explosive atmosphere in the pressurized enclosure is reduced to a safe concentration; b) or when the protective gas is inert the concentration of oxygen in the pressurized enclosure is reduced to a safe level. 2.5 static pressurization T