GB/T 3836.30-2021 Active National standards

GB/T 3836.30-2021 Explosive atmospheres—Part 30:Equipment and components in explosive atmospheres in underground mines

Publish Date: 2021-10-11 Implement Date: 2022-05-01 For services related to genuine standard inquiry, procurement, translation, and other related services in China, please Contact Us

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Basic Information

Standard Code: GB/T 3836.30-2021

Standard Type: National standards

Standard Status: Active

is_force_gb: no

CCS Name: Explosion-proof electrical appliances

ICS Name: Electric equipment for use in explosive environments

Publish Date: 2021-10-11

Implement Date: 2022-05-01

Pages: 42 pages

Scope

This document specifies the explosion-proof requirements for the design, structure, evaluation, and use (maintenance, repair, and marking) of equipment that can operate independently or in combination in explosive environments.
It includes mining machinery and components used in explosive environments with methane and/or combustible dust. The standard atmospheric conditions under which the equipment is assumed to operate (related to the explosive characteristics of the environment) are as follows:
——Temperature: -20 ℃ to +60 ℃;
——Pressure: 80 kPa to 110 kPa;
——Normal oxygen content in the air: typically 21% (by volume).
Note: For electrical equipment used under atmospheric conditions outside this range, further consideration and testing may be required.
This document applies to Mb-class (EPL Mb) equipment and components used in explosive environments containing methane and/or combustible dust.
For Ma-class (EPL Ma) equipment and components, the requirements of this document, GB/T 3836.1, and GB/T 3836.28 apply.
External conditions and comprehensive protection measures that may affect safety also need to be considered. These measures may include ventilation, gas detection, or gas extraction.
This document also addresses the prevention of ignition in explosive environments caused by the combustion (or smoldering) of flammable materials used in the structure of the equipment, such as fabric fibers, plastic "O" rings, rubber sealing rings, lubricating oil, or grease. For example, mechanical failures of rotating bearings can cause friction-induced heat, igniting their plastic covers, plastic seals, or lubricating oil and grease.
The specific requirements and test procedures for fire protection of conveyor belts are not within the scope of this document.

Development Information

Word Count: 83 Thousand words Pages: 42 pages

Same series standard

Referenced Standards

GB/T 3836.28-2021 Explosive atmospheres—Part 28:Non-electrical equipment for explosive atmospheres—Basic method and requirements GB/T 3836.29-2021 Explosive atmospheres—Part 29:Non-electrical equipment for explosive atmospheres—Constructional safety “c”,control of ignition source “b”, liquid immersion “k” ISO 15029-1 ISO 15029-2 GB/T 3685-1996 Conveyor belts—Flame retardation—Specifications and test method GB/T 3685-2009 Conveyor belts—Laboratory scale flammability characteristics—Requirements and test method GB/T 3685-2017 Conveyor belts—Laboratory scale flammability characteristics—Test method GB 3836.1-2000 Electrical apparatus for explosive gas atmospheres—Part 1:General requirements GB 3836.1-2010 Explosive atmospheres—Part 1:Equipment—General requirements GB/T 3836.1-2021 Explosive atmospheres—Part 1:Equipment—General requirements GB 3836.18-2010 Explosive atmospheres—Part 18:Intrinsically safe system GB/T 3836.18-2017 Explosive atmospheres—Part 18:Intrinsically safe electrical systems GB/T 3836.18-2024 Explosive atmospheres—Part 18:Intrinsically safe electrical systems GB 4208-1993 Degrees of protection provided by enclosure (IP code) GB/T 4208-2008 Degrees of protection provided by enclosure(IP code) GB/T 4208-2017 Degrees of protection provided by enclosure(IP code) GB 5226.1-2002 Safety of machinery—Electrical equipment of machines—Part 1:General requirements GB 5226.1-2008 Electrical safety of machinery—Electrical equipment of machines—Part 1:General requirements GB/T 5226.1-2019 Electrical safety of machinery—Electrical equipment of machines—Part 1:General requirements GB 5226.3-2005 Safety of machinery—Electrical equipment of machines—Part 11:Requirements for HV equipment for voltages above 1 000 Va.c. or 1 500 Vd.c. and not exceeding 36 kV GB/T 8642-2002 Thermal spraying—Determination of tensile adhesive strength GB/T 9239.1-2006 Mechanical vibration—Balance quality requirements for rotors in a constant(rigid)state—Part 1:Specification and verification of balance tolerances GB/T 13813-2001 Testing method and judging rule of safety to friction spark of metallic material for coal mine GB/T 13813-2008 Testing method and judging rule of safety to friction spark of metallic material for coal mine GB/T 13813-2023 Testing method and judging rule of safety to friction spark of metallic material for coal mine GB/T 16855.1-1997 Safety of machinery—Safety related parts of control systems—Part 1:General principles for design GB/T 16855.1-2005 Safety of machinery—Safety-related parts of control systems—Part 1:General principles for design GB/T 16855.1-2008 Safety of machinery—Safety-related parts of control systems—Part 1:General principles for design GB/T 16855.1-2018 Safety of machinery—Safety-related parts of control systems—Part 1:General principles for design GB/T 18380.11-2008 Tests on electric and optical fibre cables under fire conditions—Part 11:Test for vertical flame propagation for a single insulated wire or cable—Apparatus GB/T 18380.11-2022 Tests on electric and optical fibre cables under fire conditions—Part 11:Test for vertical flame propagation for a single insulated wire or cable—Apparatus GB/T 18380.12-2008 Test on electric and optical fibre cables under fire conditions—Part 12:Test for vertical flame propagation for a single insulated wire or cable—Procedure for 1 kW pre-mixed flame GB/T 18380.12-2022 Tests on electric and optical fibre cables under fire conditions—Part 12:Test for vertical flame propagation for a single insulated wire or cable—Procedure for 1 kW pre-mixed flame GB/T 18380.13-2008 Tests on electric and optical fibre cables under fire conditions—Part 13:Test for vertical flame propagation for a single insulated wire or cable—Procedure for determination of flaming droplets/particles GB/T 18380.13-2022 Tests on electric and optical fibre cables under fire conditions—Part 13:Test for vertical flame propagation for a single insulated wire or cable—Procedure for determination of flaming droplets/particles GB 28526-2012 Electrical safety of machinery—Functional safety of safety-related electrical,electronic and programmable electronic control systems GB/T 31523.1-2015 Safety information identification systems—Part 1:Signs GB/T 34560.5-2017 Structural steels—Part 5:Technical delivery conditionfor atmospheric corrosion resisting steels SH/T 0785-2006 Flame-resistant liquid core combustion endurance determination method GB/T 16855.1-2025 Safety of machinery—Safety-related parts of control systems—Part 1:General principles for design GB/T 8642-2025 Thermal spraying—Determination of tensile adhesive strength

Adopt standards

ISO/IEC 80079-38:2016

Related Standards

GB 5590-1985 Replaced

GB 5590-1985 Mining type flameproof electric magnetic starters

Publish Date: 1985-11-20

GB 3836.9-1990 Replaced

GB 3836.9-1990 Electrical apparatus for explosive atmospheres Encapsulated electrical apparatus "m"

Publish Date: 1990-08-27

GB 3836.11-1991 Replaced

GB 3836.11-1991 Electrical apparatus for explosive atmospheres-Method of test for ascertainment of maximum experimental safe gap

Publish Date: 1991-05-27

GB 3836.12-1991 Replaced

GB 3836.12-1991 Electrical apparatus for explosive atmospheres—Classification of gases or vapours with air according to their maximum experimental safe gaps and minimum igniting currents

Publish Date: 1991-05-27

GB 3836.13-1997 Replaced

GB 3836.13-1997 Electrical apparatus for explosive gas atmospheres—Part 13:Repair and overhaul for apparatus used in explosive gas atmospheres

Publish Date: 1997-12-30

MT 703-1997 Replaced

MT 703-1997 Technical condition of electro-chemical type carbon monoxide instrumentation for coal mine

Publish Date: 1997-12-30