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Position: Chinese Standard in English/GB 3836.5-2004
GB 3836.5-2004   Electrical apparatus for explosive gas atmosphere?Part 5:Pressurized enclosures “p” (English Version)
Standard No.: GB 3836.5-2004 Status:superseded remind me the status change

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Standard No.: GB 3836.5-2004
English Name: Electrical apparatus for explosive gas atmosphere?Part 5:Pressurized enclosures “p”
Chinese Name: 爆炸性气体环境用电气设备 第5部分:正压外壳型“p”
Chinese Classification: K35    Explosion-proof electric apparatus
Professional Classification: GB    National Standard
ICS Classification: 29.260.20 29.260.20    Electrical apparatus for explosive atmospheres 29.260.20
Issued by: AQSIQ; SAC
Issued on: 2004-05-14
Implemented on: 2005-2-1
Status: superseded
Superseded by:GB/T 3836.5-2017 Explosive atmospheres-Part 5:Equipment protection by pressurized enclosure"p"
Superseded on:2018-2-1
Superseding:GB 3836.5-1987 Electrical apparatus for explosive atmospheres--Pressurized electrical apparatus p
Language: English
File Format: PDF
Word Count: 16000 words
Price(USD): 400.0
Delivery: via email in 1 business day
1 Scope This part of GB 3836 contains the specific requirements for the construction and testing of electrical apparatus with pressurized enclosures, of protection type "p", intended for use in explosive gas atmospheres, and the requirements contained in this part are supplementary to those in GB 3836.1. This part specifies requirements for pressurized enclosures containing a limited release of a flammable substance. This part does not contain the requirements for pressurized enclosures where the containment system may release a) Air with an oxygen content greater than normal, or b) Oxygen in combination with inert gas in a proportion greater than 21%. This part does not contain requirements for pressurized rooms or analyser houses. 2 Normative References The following standards contain provisions which, through reference in this part of GB 3836, constitute provisions of this part. For dated reference, subsequent amendments to (excluding correction to), or revisions of, any of these publications do not apply. However, all parties coming to an agreement according to this part are encouraged to study whether the latest edition of these documents is applicable. For undated references, the latest edition of the normative document is applicable to this part. GB/T 2900.1-1992 "Electrotechnical Terminology-Fundamental Terms" (eqv IEC 60050) GB/T 2900.35-1998 "Electrotechnical Terminology-Electrical Apparatus for Explosive Atmospheres" (neq IEC 60050(426):1990) GB 3836.1-2000 "Electrical Apparatus for Explosive Gas Atmospheres-Part 1: General Requirements" (eqv IEC 60079-0:1998) GB/T 4207-1984 "Method for Determining the Comparative and the Proof Tracking Indices of Solid Insulating Materials under Moist Conditions" (neq IEC 60112:1979) GB 4208-1993 "Degrees of Protection Provided by Enclosure (IP Code)" (eqv IEC 60529:1989) GB/T 4942.1-2001 "Classification of Degrees of Protection Provided by Enclosures for Rotating Machines" (idt IEC 60034-5:1991) GB/T 16935.1-1997 "Insulation Coordination for Equipment within Low-voltage Systems-Part 1: Principles Requirements and Tests" (idt IEC 60664-1:1992) 3 Terms and Definitions For the purposes of this part, the terms and definitions given in GB/T 2900.1 and GB/T 2900.35 and the following apply. Note: Unless otherwise specified, the terms "voltage" and "current" mean the r.m.s. values of an alternating, direct or composite voltage or current. 3.1 Alarm Piece of apparatus that generates a visual or audible signal that is intended to attract attention. 3.2 Containment system Part of the apparatus containing the flammable substance that may constitute an internal source of release. 3.3 Dilution Continuous supply of a protective gas, after purging, at such a rate that the concentration of a flammable substance inside the pressurized enclosure is maintained at a value outside the explosive limits at any potential ignition source (that is to say, outside the dilution area). Note: Dilution of oxygen by inert gas may result in a concentration of flammable gas or vapour above the upper explosive limit (UEL). 3.4 Dilution area Area in the vicinity of an internal source of release where the concentration of a flammable substance is not diluted to a safe concentration. 3.5 Enclosure volume Volume of the empty enclosure without internal apparatus. For rotating electrical machines, the free internal volume plus the volume displaced by the rotor. 3.6 Flammable substance Gases, vapours, liquids or mixtures thereof that are capable of being ignited. 3.7 Hermetically sealed device Device which is so constructed that the external atmosphere cannot gain access to the interior and in which any seal is made by fusion, for example, brazing, welding or the fusion of glass to metal. 3.8 Ignition-capable apparatus (ICA) Apparatus which in normal operation constitutes a source of ignition for a specified explosive gas atmosphere. This includes electrical apparatus not protected by a type of protection listed in 7.13. 3.9 Indicator Piece of apparatus that shows whether flow or pressure is adequate and is monitored periodically, consistent with the requirement of the application.
Foreword I IEC Introduction III 1 Scope 2 Normative References 3 Terms and Definitions 4 Protection Types 5 Constructional Requirements for Pressurized Enclosures 6 Temperature Limits 7 Safety Provisions and Safety Devices (except for Static Pressurization) 8 Safety Provisions and Safety Devices for Static Pressurization 9 Supply of Protective Gas 10 Pressurized Apparatus with an Internal Source of Release 11 Release Conditions 12 Design Requirements for the Containment System 13 Protective Gas and Pressurizing Techniques 14 Ignition-capable Apparatus 15 Internal Hot Surfaces 16 Type Verification and Tests 17 Routine Test 18 Marking Annex A (Normative) Purging and Dilution Tests Annex B (Informative) Examples of Functional Sequence Diagram Annex C (Informative) Examples of the Changes in Pressure in Ducts and Enclosures Annex D (Informative) Information to Be Provided to the User Annex E (Normative) Classification of the Type of Release within Enclosures Annex F (Informative) Examples for the Use of the Dilution Area Concept Annex G (Normative) Infallibility Test for Containment System Bibliography
Referred in GB 3836.5-2004:
*GB/T 2900.1-1992 Electrotechnical terminology Fundamental terms
*GB/T 2900.35-1998 Electrotechnical terminology Electrical apparatus for explosive atmospheres
*GB 3836.1-2000 Electrical apparatus for explosive gas atmospheres--Part 1:General requirements
*GB/T 4207-1984 Method for determining the comparative and the proof tracking indices of solid insulating materials under moist conditions
*GB 4208-1993 Degrees of protection provided by enclosure (IP code)
*GB/T 4942.1-2001 Classification of degrees of protection provided by enclosures of rotating electrical machines(IP code)
*GB/T 16935.1-1997 Insulation coordination for equipment within low-voltage systems Part 1: Principles,requirements and tests
GB 3836.5-2004 is referred in:
* GB 3836.1-2010 Explosive atmospheres—Part 1:Equipment—General requirements
* GB 3836.16-2006 Electrical apparatus for explosive gas atmospheres?Part 16: Inspection and maintenance of electrical installation (other than mines)
* GB 3836.1-2010 Explosive atmospheres—Part 1:Equipment—General requirements
* GB 3836.8-2003 Electrical apparatus for explosive gas atmospheres?Part 8:Type of protection “n”
* GB 20181-2006 Mine hoists and mine winders Safety requirements
* SY/T 0090-2006 Code of Instrument Control System Design for Oil-gas Fields and Pipelines
* GB/T 3215-2007 Centrifugal pumps for petroleum petrochemical and natural gas industries
* GB 31094-2014 Safety Rules for the Construction and Installation of Lifts for Explosive Atmospheres
*GB 21009-2007 Mine blast-hole drills—Safety requirements
Code of China
Standard
GB 3836.5-2004  Electrical apparatus for explosive gas atmosphere?Part 5:Pressurized enclosures “p” (English Version)
Standard No.GB 3836.5-2004
Statussuperseded
LanguageEnglish
File FormatPDF
Word Count16000 words
Price(USD)400.0
Implemented on2005-2-1
Deliveryvia email in 1 business day
Detail of GB 3836.5-2004
Standard No.
GB 3836.5-2004
English Name
Electrical apparatus for explosive gas atmosphere?Part 5:Pressurized enclosures “p”
Chinese Name
爆炸性气体环境用电气设备 第5部分:正压外壳型“p”
Chinese Classification
K35
Professional Classification
GB
ICS Classification
Issued by
AQSIQ; SAC
Issued on
2004-05-14
Implemented on
2005-2-1
Status
superseded
Superseded by
GB/T 3836.5-2017 Explosive atmospheres-Part 5:Equipment protection by pressurized enclosure"p"
Superseded on
2018-2-1
Abolished on
Superseding
GB 3836.5-1987 Electrical apparatus for explosive atmospheres--Pressurized electrical apparatus p
Language
English
File Format
PDF
Word Count
16000 words
Price(USD)
400.0
Keywords
GB 3836.5-2004, GB/T 3836.5-2004, GBT 3836.5-2004, GB3836.5-2004, GB 3836.5, GB3836.5, GB/T3836.5-2004, GB/T 3836.5, GB/T3836.5, GBT3836.5-2004, GBT 3836.5, GBT3836.5
Introduction of GB 3836.5-2004
1 Scope This part of GB 3836 contains the specific requirements for the construction and testing of electrical apparatus with pressurized enclosures, of protection type "p", intended for use in explosive gas atmospheres, and the requirements contained in this part are supplementary to those in GB 3836.1. This part specifies requirements for pressurized enclosures containing a limited release of a flammable substance. This part does not contain the requirements for pressurized enclosures where the containment system may release a) Air with an oxygen content greater than normal, or b) Oxygen in combination with inert gas in a proportion greater than 21%. This part does not contain requirements for pressurized rooms or analyser houses. 2 Normative References The following standards contain provisions which, through reference in this part of GB 3836, constitute provisions of this part. For dated reference, subsequent amendments to (excluding correction to), or revisions of, any of these publications do not apply. However, all parties coming to an agreement according to this part are encouraged to study whether the latest edition of these documents is applicable. For undated references, the latest edition of the normative document is applicable to this part. GB/T 2900.1-1992 "Electrotechnical Terminology-Fundamental Terms" (eqv IEC 60050) GB/T 2900.35-1998 "Electrotechnical Terminology-Electrical Apparatus for Explosive Atmospheres" (neq IEC 60050(426):1990) GB 3836.1-2000 "Electrical Apparatus for Explosive Gas Atmospheres-Part 1: General Requirements" (eqv IEC 60079-0:1998) GB/T 4207-1984 "Method for Determining the Comparative and the Proof Tracking Indices of Solid Insulating Materials under Moist Conditions" (neq IEC 60112:1979) GB 4208-1993 "Degrees of Protection Provided by Enclosure (IP Code)" (eqv IEC 60529:1989) GB/T 4942.1-2001 "Classification of Degrees of Protection Provided by Enclosures for Rotating Machines" (idt IEC 60034-5:1991) GB/T 16935.1-1997 "Insulation Coordination for Equipment within Low-voltage Systems-Part 1: Principles Requirements and Tests" (idt IEC 60664-1:1992) 3 Terms and Definitions For the purposes of this part, the terms and definitions given in GB/T 2900.1 and GB/T 2900.35 and the following apply. Note: Unless otherwise specified, the terms "voltage" and "current" mean the r.m.s. values of an alternating, direct or composite voltage or current. 3.1 Alarm Piece of apparatus that generates a visual or audible signal that is intended to attract attention. 3.2 Containment system Part of the apparatus containing the flammable substance that may constitute an internal source of release. 3.3 Dilution Continuous supply of a protective gas, after purging, at such a rate that the concentration of a flammable substance inside the pressurized enclosure is maintained at a value outside the explosive limits at any potential ignition source (that is to say, outside the dilution area). Note: Dilution of oxygen by inert gas may result in a concentration of flammable gas or vapour above the upper explosive limit (UEL). 3.4 Dilution area Area in the vicinity of an internal source of release where the concentration of a flammable substance is not diluted to a safe concentration. 3.5 Enclosure volume Volume of the empty enclosure without internal apparatus. For rotating electrical machines, the free internal volume plus the volume displaced by the rotor. 3.6 Flammable substance Gases, vapours, liquids or mixtures thereof that are capable of being ignited. 3.7 Hermetically sealed device Device which is so constructed that the external atmosphere cannot gain access to the interior and in which any seal is made by fusion, for example, brazing, welding or the fusion of glass to metal. 3.8 Ignition-capable apparatus (ICA) Apparatus which in normal operation constitutes a source of ignition for a specified explosive gas atmosphere. This includes electrical apparatus not protected by a type of protection listed in 7.13. 3.9 Indicator Piece of apparatus that shows whether flow or pressure is adequate and is monitored periodically, consistent with the requirement of the application.
Contents of GB 3836.5-2004
Foreword I IEC Introduction III 1 Scope 2 Normative References 3 Terms and Definitions 4 Protection Types 5 Constructional Requirements for Pressurized Enclosures 6 Temperature Limits 7 Safety Provisions and Safety Devices (except for Static Pressurization) 8 Safety Provisions and Safety Devices for Static Pressurization 9 Supply of Protective Gas 10 Pressurized Apparatus with an Internal Source of Release 11 Release Conditions 12 Design Requirements for the Containment System 13 Protective Gas and Pressurizing Techniques 14 Ignition-capable Apparatus 15 Internal Hot Surfaces 16 Type Verification and Tests 17 Routine Test 18 Marking Annex A (Normative) Purging and Dilution Tests Annex B (Informative) Examples of Functional Sequence Diagram Annex C (Informative) Examples of the Changes in Pressure in Ducts and Enclosures Annex D (Informative) Information to Be Provided to the User Annex E (Normative) Classification of the Type of Release within Enclosures Annex F (Informative) Examples for the Use of the Dilution Area Concept Annex G (Normative) Infallibility Test for Containment System Bibliography
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Keywords:
GB 3836.5-2004, GB/T 3836.5-2004, GBT 3836.5-2004, GB3836.5-2004, GB 3836.5, GB3836.5, GB/T3836.5-2004, GB/T 3836.5, GB/T3836.5, GBT3836.5-2004, GBT 3836.5, GBT3836.5