GB 3836.14-2014 English PDF

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GB 3836.14-2014: Electrical apparatus for explosive gas atmospheres -- Part 14: Classification of hazardous areas
GB 3836.14-2014
Electrical apparatus for explosive gas atmospheres.Part 14. Classification of hazardous areas
ICS 29.260.20
K35
National Standards of People's Republic of China
Replacing GB 3836.14-2000
Explosive atmospheres - Part 14. Classification of
Explosive atmosphere
(IEC 60079-10-1.2008, IDT)
Issued on. 2014-12-05
2015-10-16 implementation
Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China
Standardization Administration of China released
Table of Contents
Introduction Ⅲ
Introduction Ⅳ
1 Scope 1
2 Normative references 1
3 Terms and definitions 2
4 General 4
4.1 Safety Principles 4
Objective 4.2 Location Category 5
5 Location Category 5 program
5.1 General 5
5.2 source of release 6
5.3 Area Type 6
5.4 6 regional
6 Ventilation 9
6.1 General 9
The main types of ventilation 6.2 9
6.3 Ventilation Level 9
6.4 ventilation effectiveness 9
7 file 9
7.1 General 9
7.2 drawings, records and data tables Table 10
Examples Appendix A (informative) source of release 11
Annex B (informative) Ventilation 16
Annex C (informative) Examples hazardous area classification 29
Annex D (informative) flammable mist 44
Figure C.1 hazardous location area is preferably 29 symbols
Figure C.2 Classification of hazardous areas schematic 43
Table A.1 influence through holes for different release levels of 12
Table B.1 independent influence of ventilation on type of zone 22
Table B.2 in V0 of multiple release summation program 22
Table B.3 1 release multiple-level summation procedure 23
Table C.1 hazardous area classification data sheet - Part 1. Details and characteristics of the flammable substance 42
Table C.2 hazardous area classification data sheet - Part 2. Released sources list 42
Foreword
All technical content in this section is mandatory.
GB 3836 "explosive atmosphere" is divided into the following sections.
Part --- 1. Equipment General requirements;
Part --- 2. the flameproof enclosure "d" protection equipment;
--- Part 3. by the increased safety "e" protection equipment;
--- Part 4. Equipment protection by intrinsic safety "i";
--- Part 5. The type pressurized enclosure "p" protection equipment;
--- Part 6. from oil immersed "o" equipment protection;
--- Part 7. from Powder filling "q" equipment protection;
--- Part 8. the "n" type protective equipment;
--- Part 9. the Encapsulation "m" protection equipment;
--- Part 11. Determination of the maximum experimental safe gap;
--- Part 12. a mixture of gases or vapors according to their maximum experimental safe gaps and minimum igniting currents;
--- Part 13. Equipment repair, overhaul, repair and modification;
Part --- 14. Classification of explosive gas environment;
--- Part 15. Electrical installations design, selection and installation;
Part --- 16. Inspection and maintenance of electrical installations;
--- Part 17. Construction and use of rooms or buildings of positive pressure;
--- Part 18. Intrinsic safety systems;
--- Part 19. Fieldbus intrinsically safe concept (FISCO);
--- Part 20. Equipment protection level (EPL) for the Ga-class equipment.
This section drafted in accordance with GB/T 1.1-2009 given rules.
This is Part 14 GB 3836's.
This Part replaces GB 3836.14-2000 "Electrical apparatus for explosive gas atmospheres - Part 14. Classification of hazardous areas", and
GB 3836.14-2000 compared to major technical changes are as follows.
--- Increased flammability mist explosion hazard high flash point liquid under pressure release (see Appendix D);
--- Thermodynamics formulas given many liquids and gases release rate estimated at the rate of release (see A.3).
This section uses the translation method is equivalent to using IEC 60079-10-1.2008 "Explosive atmospheres - Part 10-1. Classification of explosive
Atmosphere "(in English).
This part is proposed by the China Electrical Equipment Industrial Association.
This part of the National explosion-proof electrical equipment Standardization Technical Committee (SAC/TC9) centralized.
This part mainly drafted by. Nanyang Explosion Electric Institute, the national explosion-proof electrical products for Quality Supervision and Inspection Center, Long a proof electrical
Ltd., Shenzhen City Jin-Ming Technology Co., Ltd., a new dawn Technology Co., Ltd., electro explosion-proof electrical Co., Sinopec Qingdao
Full Engineering Research Institute.
The main drafters of this section. Wang Jun, Xie Shao Jian, Wu Xudong, Zhengzhen Xiao, Dan Xiaoxian, Li Xiaoning, Zhang Weihua, Zhao Hongyu.
This part of the standard replaces the previous editions are.
--- GB 3836.14-2000.
introduction
May occur in flammable gas or vapor concentration reaches a dangerous level and the number of places, explosion-proof measures should be taken to avoid the risk of explosion
risk. GB 3836 presented in this section can prevent ignition hazard assessment of the basic principles, and given that can be used to reduce such hazards
Design and control parameters guide.
Explosive atmospheres - Part 14. Classification of
Explosive atmosphere
1 Scope
GB This section 3836 specifies the possible flammable gas, vapor or mist Classification of hazardous areas (see Note 1, Notes 2 and 3),
As support proper selection and installation of electrical equipment in hazardous locations such foundation.
This section applies under standard atmospheric conditions (see Note 4), due to flammable gases or vapors mixed with air could ignite
Dangerous place, but does not apply to the following locations.
a) coal mine gas;
b) Explosives processing and manufacturing;
c) a dangerous place combustible dust or fibers that may arise (see GB 12476.3);
d) beyond the section relates to exceptions catastrophic failure (see Note 5);
e) Medical Interior;
f) residential.
This section does not consider the impact of indirect damage caused.
Together with definitions and explanations put forward based on the main principles and procedures of hazardous area classification terminology.
For detailed requirements Hazardous Locations range of industry-specific or application-specific advice can refer to the relevant industry design specifications.
Note 1. flammable mist can be formed simultaneously with the flammable vapors or appear. Despite the release of the liquid under pressure may also have flammable mist, but this section does not test
Zoning considered dangerous liquids (due to the flash point), in these cases, the strict use of gases and vapors may not be suitable as a basis for device selection.
Flammable mist information in Appendix D.
Note 2. GB 3836.15 selection and installation of equipment based on the risk of mist is not required.
Note 3. For this part, the dangerous places refers to the three-dimensional region or space.
Note 4. If the changes affect the flammable substance explosion characteristics can be negligible, then the reference atmospheric conditions including temperature and atmospheric pressure 101.3kPa
Fluctuating change 20 ℃.
Note 5. The concept of catastrophic accidents in this section is among those unexpected accidents, such as pressure vessels burst or pipe rupture.
Note 6. In any processing device, regardless of its size, in addition to electrical equipment associated with an ignition source, but also there are many possible sources of ignition. in this sense,
To ensure security, the need to take appropriate precautions in this section may be used to judge other ignition source.
2 Normative references <...