EN 50016:2002

Electrical apparatus for potentially explosive atmospheres - Pressurized apparatus "p"

Superseded by EN 60079-2:2004

Elektrische Betriebsmittel für explosionsgefährdete Bereiche - Überdruckkapselung "p"

Matériel électrique pour atmosphères explosibles - Surpression interne "p"

Električne naprave za potencialno eksplozivne atmosfere - Nadtlak "p"

General Information

• Status: Withdrawn
• Publication Date: 16-Jul-2002
• Withdrawal Date: 29-Jun-2003
• ICS: 29.260.20 - Electrical apparatus for explosive atmospheres
• Technical Committee: CLC/TC 31 - Electrical apparatus for explosive atmospheres - General requirements
• Drafting Committee: CLC/SC 31-7 - Pressurization and other techniques
• Parallel Committee: IEC/TC 31 - Electrical apparatus for potentially explosive atmospheres
• Current Stage: 9960 - Withdrawal effective - Withdrawal
• Completion Date: 01-Jun-2007
• Mandate: BC/CEN/CLC/92-05 - BC/CEN/CLC/92-05
• Ref Project: SIST EN 50016:2003 - Electrical apparatus for potentially explosive atmospheres - Pressurized apparatus p

Relations

• Replaces: EN 50016:1995 - Electrical apparatus for potentially explosive atmospheres - Pressurized apparatus "p"
• Effective Date: 28-Jan-2023
• Replaced By: EN 60079-2:2004 - Electrical apparatus for explosive gas atmospheres - Part 2: Pressurized enclosures "p"
• Effective Date: 29-Jan-2023

Standards Content (Sample)

STANDARDElektrične naprave za potencialno eksplozivne atmosfere - Nadtlak "p"Electrical apparatus for potentially explosive atmospheres - Pressurized apparatus "p"©
Standard je založil in izdal Slovenski inštitut za standardizacijo. Razmnoževanje ali kopiranje celote ali delov tega dokumenta ni dovoljenoReferenčna številkaSIST EN 50016:2003(en)ICS29.260.20

EUROPEAN STANDARDEN 50016NORME EUROPÉENNEEUROPÄISCHE NORMJuly 2002CENELECEuropean Committee for Electrotechnical StandardizationComité Européen de Normalisation ElectrotechniqueEuropäisches Komitee für Elektrotechnische NormungCentral Secretariat: rue de Stassart 35, B - 1050 Brussels© 2002 CENELEC -All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.Ref. No. EN 50016:2002 EICS 29.260.20Supersedes EN 50016:1995English versionElectrical apparatus for potentially explosive atmospheres —Pressurized apparatus "p"Matériel électrique pour atmosphèresexplosibles —Surpression interne "p"Elektrische Betriebsmittel fürexplosionsgefährdete Bereiche —Überdruckkapselung "p"This European Standard was approved by CENELEC on 1999-10-01. CENELEC members are bound tocomply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving thisEuropean Standard the status of a national standard without any alteration.Up-to-date lists and bibliographical references concerning such national standards may be obtained onapplication to the Central Secretariat or to any CENELEC member.This European Standard exists in three official versions (English, French, German). A version in anyother language made by translation under the responsibility of a CENELEC member into its ownlanguage and notified to the Central Secretariat has the same status as the official versions.CENELEC members are the national electrotechnical committees of Austria, Belgium, Czech Republic,Denmark, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Luxembourg, Malta,Netherlands, Norway, Portugal, Slovakia, Spain, Sweden, Switzerland and United Kingdom.

- 3 -EN 50016:2002ContentsPage1Scope.42Normative references.43Definitions.5REQUIREMENTS FOR PRESSURIZED ENCLOSURES4Enclosures and ducting.75Temperature limits.96Safety provisions and safety devices (except for static pressurization).97Safety provisions and safety devices for static pressurization.118Supply of protective gas .12ADDITIONAL REQUIREMENTS FOR PRESSURIZED ENCLOSURES WITH CONTAINMENT SYSTEMS9Introduction .1210Release conditions.1211Design requirements for the containment system.1312Protective gas and pressurizing technique.1413Ignition capable apparatus.1614Internal hot surfaces.16VERIFICATION AND TESTS15Type verification and tests.1716Routine tests.21MARKING17Marking .21ANNEXESAnnex A (informative) Ducting of protective gas.23Annex B (informative) Infallibility test for a containment system.28Annex C (informative) Function test of surveillance circuits .29Annex D (normative) Purging and dilution tests.30

- 5 -EN 50016:2002EN 50018Electrical apparatus for potentially explosive atmospheres — Flameproofenclosures ‘d’EN 50019Electrical apparatus for potentially explosive atmospheres — Increased safety ‘e’EN 50020Electrical apparatus for potentially explosive atmospheres — Intrinsic safety ‘i’EN 50028Electrical apparatus for potentially explosive atmospheres — Encapsulation ‘m’EN 50033Electrical apparatus for potentially explosive atmospheres — Caplights for minessusceptible to firedampEN 50039Electrical apparatus for potentially explosive atmospheres — Intrinsically safesystems ‘i’EN 954SeriesSafety of machinery — Safety related parts of control systemsEN 60034-11998Rotating electrical machines — Rating and performance(IEC 60034-1:1996, modified)EN 60034-51986Rotating electrical machines — Part 5: Classification of degrees of protectionprovided by enclosures for rotating machines(IEC 60034-5:1981, modified)EN 605291991Degrees of protection provided by enclosures (IP Code)(IEC 60529:1989)HD 214 S21980Method for determining the comparative and the proof tracking indices of solidinsulating materials under moist conditions(IEC 60112:1979)3 DefinitionsFor the purposes of this European Standard, the definitions of EN 50014 and also the following apply.3.1type of protection pressurization ‘p’technique of applying a protective gas to an enclosure in order to prevent the formation of an explosiveatmosphere inside the enclosure by maintaining an overpressure against the surrounding atmosphere, andwhere necessary by using dilution3.2pressurized enclosureenclosure in which a protective gas is maintained at a pressure greater than that of the external atmosphere3.3protective gasair or inert gas used for purging and maintaining an overpressure and, if required, dilutionNOTE For the purpose of this standard inert gas means nitrogen, carbon dioxide, argon or any gas which, when mixed with oxygen in theratio 4:1 as found in air, does not make the ignition and flammability properties, such as explosive limits, more onerous.

- 7 -EN 50016:20023.13dilution areaarea in the vicinity of a source of release where the concentration of flammable gas or vapour is not dilutedto a safe concentration3.14limited releaserelease of flammable gas or vapour the maximum flow rate of which can be predicted3.15unlimited releaserelease of flammable gas or vapour the maximum flow rate of which cannot be predictedNOTE This refers to liquids which can evolve flammable gas or vapour where the rate of release cannot be predicted.3.16lower explosive limit (LEL)volume ratio of flammable gas or vapour in air below which an explosive gas atmosphere will not be formed3.17upper explosive limit (UEL)volume ratio of flammable gas or vapour in air above which an explosive gas atmosphere will not be formed3.18volume ratio (v/v)ratio of the volume of a component to the volume of the gas mixture under specified conditions oftemperature and pressureREQUIREMENTS FOR PRESSURIZED ENCLOSURES4 Enclosures and ducting4.1 GeneralThe pressurized enclosure, including any apertures for moving parts but excluding apertures for the inletand outlet of the protective gas, shall have a degree of protection in accordance with at least IP 40 ofEN 60529, or in the case of a rotat
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