GB 48141-2026 Technical specification of explosion protection for equipment for explosive atmospheres English, Anglais, Englisch, Inglés, えいご
This is a draft translation for reference among interesting stakeholders. The finalized translation (passing through draft translation, self-check, revision and verification) will be delivered upon being ordered.
ICS
CCS
National Standard of the People's Republic of China
GB 48141-2026
Technical specification of explosion protection for equipment for explosive atmospheres
爆炸性环境设备防爆技术规范
Issue date: 2026-06-27 Implementation date: 2027-05-01
Issued by the General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China
the Standardization Administration of the People's Republic of China
Contents
Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 General requirements
5 Requirements for explosion-proof safety protection of equipment in hazardous areas
6 General safety technical requirements for equipment and protective systems
7 Equipment categories and equipment protection levels (EPL)
8 Basic explosion-proof safety requirements for the design and construction of equipment and protective systems
9 Explosion-proof inspection and testing
Annex A (informative) Main conformity standards
Annex B (normative) Principles for classification of hazardous areas with explosive atmospheres
Annex C (normative) Principles for selection of equipment and protective systems
Annex D (normative) Special requirements for promoting explosion-proof safety of workers in potentially explosive atmospheres
Annex E (normative) Warning signs for locations where explosive atmospheres may occur
Bibliography
Explosion-proof technical specification for equipment in explosive atmospheres
1 Scope
1.1 This document specifies the explosion-proof protection requirements for equipment in hazardous areas with explosive atmospheres (hereinafter referred to as "hazardous areas"), as well as the common explosion-proof safety technical requirements for equipment and protective systems during design, manufacture, inspection, sale, area classification, selection, installation, use, overhaul and maintenance.
1.2 This document is applicable to explosion-proof safety protection of equipment in hazardous areas, as well as equipment and protective systems used in hazardous areas.
Note: This document can serve as the basic requirements for explosion-proof protection of equipment in hazardous areas, the basic requirements for explosion-proof safety of equipment and protective systems in hazardous areas, and the technical basis for the design, manufacture, inspection, sale, area classification, selection, installation, use, overhaul and maintenance of equipment and protective systems in hazardous areas.
1.3 Safety devices, control devices and regulating devices that are intended for use outside hazardous areas but are associated with, or have an effect on, the explosion-proof safety function of equipment and protective systems in hazardous areas are also within the scope of this document.
1.4 This document is not applicable to the following: equipment and protective systems used in hazardous areas where the explosion hazard is entirely caused by explosive substances themselves or unstable chemical substances. In addition, the requirements in this document concerning hazardous area zoning and selection are not applicable to hazardous areas in the gas environment of the mining industry. For such relevant requirements for hazardous areas in the gas environment of the mining industry, see relevant national laws and regulations, such as the Coal Mine Safety Regulations.
2 Normative references
The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition (including any amendments) applies.
GB/T 2900.35, Electrotechnical terminology — Explosive atmospheres
GB/T 3836.1, Explosive atmospheres — Part 1: Equipment — General requirements
3 Terms and definitions
For the purposes of this document, the terms and definitions given in GB/T 2900.35 and GB/T 3836.1, as well as the following, apply.
3.1
explosive atmosphere
An environment under atmospheric conditions in which a mixture of combustible substances in the form of gas, vapour, mist or dust with air, after ignition, is capable of maintaining self-sustaining combustion.
3.2
hazardous area
An area in which an explosive atmosphere occurs, or is expected to occur, in quantities such that special precautions are required for the construction, installation and use of equipment.
3.3
equipment for explosive atmospheres
A general term for electrical explosion-proof equipment and non-electrical explosion-proof equipment used alone or in combination in explosive atmospheres, capable of preventing explosion caused by its own potential ignition sources.
Example: Machinery, apparatus, fixed or mobile devices, control units, instruments and detection or prevention systems that may cause explosion due to their own potential ignition sources in the links of energy generation, transmission, storage, measurement, control, conversion and/or material handling.
3.4
protective systems for explosive atmospheres
Design units capable of immediately suppressing an explosion that has just occurred and/or limiting the effective range of explosion flames and explosion pressure.
Note: A protective system may be part of equipment or may be placed on the market as an independent system.
3.5
component
A device that is essential to the safety function of equipment and protective systems but has no autonomous function.
3.6
equipment group
A classification method related to the explosive atmosphere for which the equipment is intended.
3.7
equipment protection level (EPL)
The protection level specified for equipment according to the possibility of the equipment becoming an ignition source and the different characteristics of explosive gas atmospheres, explosive dust atmospheres and coal mine gas explosive atmospheres.
3.8
intended use
Use in accordance with the equipment group and equipment protection level (EPL), as well as all information required by the manufacturer for the safe operation of equipment, protective systems and components.
3.9
working equipment
Any instrument, equipment, tool or device used in work.
4 General requirements
The basic requirements for explosion-proof safety protection of equipment in hazardous areas, equipment and protective systems used in various hazardous areas, and explosion-proof safety assessment of hazardous areas shall comply with the requirements of this document.
If other laws and regulations stipulate other safety requirements for equipment and protective systems in hazardous areas, and for the owner's safety protection of workers in hazardous areas, the equipment and protective systems in hazardous areas, and the owner's safety protection of workers in hazardous areas shall also comply with the corresponding requirements.
The special requirements specified in this document for equipment and protective systems in hazardous areas, and for the owner's explosion-proof safety protection of workers in hazardous areas, shall be embodied in the corresponding professional standards, and shall be specified through corresponding demonstration and verification and supplemented with technical data.
Note: In practical application, the essential safety elements in this document may be combined with the characteristics of various hazardous areas or products, and supplemented with corresponding data, provisions and special requirements. For published relevant standards, see Annex A.
5 Requirements for explosion-proof safety protection of equipment in hazardous areas
5.1 Overview
This clause contains the basic requirements for the owner's responsibilities.
5.2 Explosion prevention and explosion protection
In order to prevent explosion and provide explosion protection, technical and/or organizational measures appropriate to the business activities shall be taken in accordance with the following order of priority and the following basic principles:
— Prevent the formation of an explosive atmosphere, or the nature of the business activity does not permit the formation of an explosive atmosphere;
— Avoid igniting the explosive atmosphere;
— Reduce the impact of a (potential) explosion on the safety of workers.
If necessary, these measures shall be combined with and/or supplemented by other measures to prevent the propagation of explosions, and these measures shall be verified and assessed periodically and when significant changes occur.
5.3 Explosion risk assessment
5.3.1 The specific risks caused by explosive atmospheres shall be assessed at least from the following aspects:
— The possibility and duration of the occurrence of explosive atmospheres;
— The possibility of all ignition sources appearing, being activated and becoming effective ignition sources;
— The installation and facilities, the materials used, the process and their interactions;
— The expected scale of impact.
The explosion risk shall be comprehensively assessed.
5.3.2 When carrying out the explosion risk assessment, locations that may be connected to locations where explosive atmospheres may occur through openings shall also be included.
Note: Includes areas that may be connected to potentially occurring explosive atmospheres through openings, pipes and passages, etc., and areas that can be connected to potentially occurring explosive atmospheres in the event of improper handling or failure.
5.4 General responsibilities
Standard
GB 48141-2026 Technical specification of explosion protection for equipment for explosive atmospheres (English)
Standard No.
GB 48141-2026
Status
to be valid
Language
English
File Format
PDF
Word Count
16000 words
Translation Price(USD)
480.0
Implemented on
2027-9-1
Delivery
via email in 1~3 business day
Detail of GB 48141-2026
Standard No.
GB 48141-2026
English Name
Technical specification of explosion protection for equipment for explosive atmospheres
GB 48141-2026 Technical specification of explosion protection for equipment for explosive atmospheres English, Anglais, Englisch, Inglés, えいご
This is a draft translation for reference among interesting stakeholders. The finalized translation (passing through draft translation, self-check, revision and verification) will be delivered upon being ordered.
ICS
CCS
National Standard of the People's Republic of China
GB 48141-2026
Technical specification of explosion protection for equipment for explosive atmospheres
爆炸性环境设备防爆技术规范
Issue date: 2026-06-27 Implementation date: 2027-05-01
Issued by the General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China
the Standardization Administration of the People's Republic of China
Contents
Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 General requirements
5 Requirements for explosion-proof safety protection of equipment in hazardous areas
6 General safety technical requirements for equipment and protective systems
7 Equipment categories and equipment protection levels (EPL)
8 Basic explosion-proof safety requirements for the design and construction of equipment and protective systems
9 Explosion-proof inspection and testing
Annex A (informative) Main conformity standards
Annex B (normative) Principles for classification of hazardous areas with explosive atmospheres
Annex C (normative) Principles for selection of equipment and protective systems
Annex D (normative) Special requirements for promoting explosion-proof safety of workers in potentially explosive atmospheres
Annex E (normative) Warning signs for locations where explosive atmospheres may occur
Bibliography
Explosion-proof technical specification for equipment in explosive atmospheres
1 Scope
1.1 This document specifies the explosion-proof protection requirements for equipment in hazardous areas with explosive atmospheres (hereinafter referred to as "hazardous areas"), as well as the common explosion-proof safety technical requirements for equipment and protective systems during design, manufacture, inspection, sale, area classification, selection, installation, use, overhaul and maintenance.
1.2 This document is applicable to explosion-proof safety protection of equipment in hazardous areas, as well as equipment and protective systems used in hazardous areas.
Note: This document can serve as the basic requirements for explosion-proof protection of equipment in hazardous areas, the basic requirements for explosion-proof safety of equipment and protective systems in hazardous areas, and the technical basis for the design, manufacture, inspection, sale, area classification, selection, installation, use, overhaul and maintenance of equipment and protective systems in hazardous areas.
1.3 Safety devices, control devices and regulating devices that are intended for use outside hazardous areas but are associated with, or have an effect on, the explosion-proof safety function of equipment and protective systems in hazardous areas are also within the scope of this document.
1.4 This document is not applicable to the following: equipment and protective systems used in hazardous areas where the explosion hazard is entirely caused by explosive substances themselves or unstable chemical substances. In addition, the requirements in this document concerning hazardous area zoning and selection are not applicable to hazardous areas in the gas environment of the mining industry. For such relevant requirements for hazardous areas in the gas environment of the mining industry, see relevant national laws and regulations, such as the Coal Mine Safety Regulations.
2 Normative references
The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition (including any amendments) applies.
GB/T 2900.35, Electrotechnical terminology — Explosive atmospheres
GB/T 3836.1, Explosive atmospheres — Part 1: Equipment — General requirements
3 Terms and definitions
For the purposes of this document, the terms and definitions given in GB/T 2900.35 and GB/T 3836.1, as well as the following, apply.
3.1
explosive atmosphere
An environment under atmospheric conditions in which a mixture of combustible substances in the form of gas, vapour, mist or dust with air, after ignition, is capable of maintaining self-sustaining combustion.
3.2
hazardous area
An area in which an explosive atmosphere occurs, or is expected to occur, in quantities such that special precautions are required for the construction, installation and use of equipment.
3.3
equipment for explosive atmospheres
A general term for electrical explosion-proof equipment and non-electrical explosion-proof equipment used alone or in combination in explosive atmospheres, capable of preventing explosion caused by its own potential ignition sources.
Example: Machinery, apparatus, fixed or mobile devices, control units, instruments and detection or prevention systems that may cause explosion due to their own potential ignition sources in the links of energy generation, transmission, storage, measurement, control, conversion and/or material handling.
3.4
protective systems for explosive atmospheres
Design units capable of immediately suppressing an explosion that has just occurred and/or limiting the effective range of explosion flames and explosion pressure.
Note: A protective system may be part of equipment or may be placed on the market as an independent system.
3.5
component
A device that is essential to the safety function of equipment and protective systems but has no autonomous function.
3.6
equipment group
A classification method related to the explosive atmosphere for which the equipment is intended.
3.7
equipment protection level (EPL)
The protection level specified for equipment according to the possibility of the equipment becoming an ignition source and the different characteristics of explosive gas atmospheres, explosive dust atmospheres and coal mine gas explosive atmospheres.
3.8
intended use
Use in accordance with the equipment group and equipment protection level (EPL), as well as all information required by the manufacturer for the safe operation of equipment, protective systems and components.
3.9
working equipment
Any instrument, equipment, tool or device used in work.
4 General requirements
The basic requirements for explosion-proof safety protection of equipment in hazardous areas, equipment and protective systems used in various hazardous areas, and explosion-proof safety assessment of hazardous areas shall comply with the requirements of this document.
If other laws and regulations stipulate other safety requirements for equipment and protective systems in hazardous areas, and for the owner's safety protection of workers in hazardous areas, the equipment and protective systems in hazardous areas, and the owner's safety protection of workers in hazardous areas shall also comply with the corresponding requirements.
The special requirements specified in this document for equipment and protective systems in hazardous areas, and for the owner's explosion-proof safety protection of workers in hazardous areas, shall be embodied in the corresponding professional standards, and shall be specified through corresponding demonstration and verification and supplemented with technical data.
Note: In practical application, the essential safety elements in this document may be combined with the characteristics of various hazardous areas or products, and supplemented with corresponding data, provisions and special requirements. For published relevant standards, see Annex A.
5 Requirements for explosion-proof safety protection of equipment in hazardous areas
5.1 Overview
This clause contains the basic requirements for the owner's responsibilities.
5.2 Explosion prevention and explosion protection
In order to prevent explosion and provide explosion protection, technical and/or organizational measures appropriate to the business activities shall be taken in accordance with the following order of priority and the following basic principles:
— Prevent the formation of an explosive atmosphere, or the nature of the business activity does not permit the formation of an explosive atmosphere;
— Avoid igniting the explosive atmosphere;
— Reduce the impact of a (potential) explosion on the safety of workers.
If necessary, these measures shall be combined with and/or supplemented by other measures to prevent the propagation of explosions, and these measures shall be verified and assessed periodically and when significant changes occur.
5.3 Explosion risk assessment
5.3.1 The specific risks caused by explosive atmospheres shall be assessed at least from the following aspects:
— The possibility and duration of the occurrence of explosive atmospheres;
— The possibility of all ignition sources appearing, being activated and becoming effective ignition sources;
— The installation and facilities, the materials used, the process and their interactions;
— The expected scale of impact.
The explosion risk shall be comprehensively assessed.
5.3.2 When carrying out the explosion risk assessment, locations that may be connected to locations where explosive atmospheres may occur through openings shall also be included.
Note: Includes areas that may be connected to potentially occurring explosive atmospheres through openings, pipes and passages, etc., and areas that can be connected to potentially occurring explosive atmospheres in the event of improper handling or failure.
5.4 General responsibilities
