Standard No.:	GB 6222-2025
English Name:	Safety specification for gas of industrial enterprises
Chinese Name:	工业企业煤气安全规范
Professional Classification:	GB    National Standard
Source Content Issued by:	SAMR; SAC
Issued on:	2025-10-31
Implemented on:	2026-5-1
Status:	to be valid
Superseding:	GB 6222-2005 Safety Code for Gas of Industrial Enterprises
Target Language:	English
File Format:	PDF
Word Count:	23000 words
Translation Price(USD):	690.0
Delivery:	via email in 1~8 business day

GB 6222-2025 Safety specification for gas of industrial enterprises 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 13.220 CCS H 57 National Standard of the People's Republic of China ‌GB 6222-2025 Replaces GB 6222-2005 Safety specification for gas of industrial enterprises 工业企业煤气安全规范 Issue date: 2025-10-31 Implementation date: 2026-05-01 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 1 Scope 2 Normative References 3 Terms and Definitions 4 General Requirements 5 Gas Production, Recovery, and Purification 5.1 Production and Purification of Producer Gas 5.2 Production and Purification of Water Gas (Including Semi-Water Gas) 5.3 Recovery and Purification of Blast Furnace Gas 5.4 Recovery and Purification of Coke Oven Gas 5.5 Production and Purification of Vertical Continuous Carbonization Furnace Gas 5.6 Recovery and Purification of Converter Gas 5.7 Recovery and Purification of Ferroalloy Furnace Gas 5.8 Leakage Test for Gas Purification Facilities 6 Gas Pipelines 7 Auxiliary Devices for Gas Equipment and Pipelines 8 Gas Pressurization Stations, Blending Stations, and Exhauster Rooms 8.1 Building Safety Requirements 8.2 General Requirements 9 Gas Holders 9.1 General Requirements 9.2 Wet Gas Holders 9.3 Dry Gas Holders 10 Operation, Inspection, and Maintenance of Gas Facilities 10.1 Operation of Gas Facilities 10.2 Inspection and Maintenance of Gas Facilities 11 Gas Dispatching and Protection 11.1 Gas Dispatching 11.2 Gas Protection Stations (Groups) 11.3 Carbon Monoxide Concentration Monitoring and Alarm Devices 12 Emergency Response 13 Verification Methods References 1 Scope This document specifies the safety management and technical requirements for the design, management, operation, maintenance, and emergency response of gas facilities in industrial plants, including generators, water gas generators, semi-water gas generators, vertical continuous carbonization furnaces, blast furnaces, converters, coke ovens, and ferroalloy furnaces, covering production, recovery, purification, transmission, storage, and use. It also describes the corresponding verification methods. This document applies to gas facilities within industrial enterprise plants. This document does not apply to gas facilities used for producing methane, methanol, hydrogen, and other industrial products, as well as urban gas distribution networks (including main pipes, branch pipes, courtyard pipelines, and pressure regulation facilities. 2 Normative References The contents of the following documents, through normative reference in this text, constitute essential provisions of this document. For dated references, only the edition cited applies; for undated references, the latest version (including amendments) applies. GB 2894 Safety Colors and Safety Signs GB 4053 (All Parts) Safety Requirements for Fixed Steel Ladders and Platforms GB 8958 Safety Regulations for Work in Oxygen-Deficient Atmospheres GB 12358 General Technical Requirements for Environmental Gas Detection and Alarm Instruments in Workplaces GB 16912 Safety Technical Regulations for Oxygen Production by Cryogenic Air Separation and Related Gases GB 18218 Identification of Major Hazard Installations for Dangerous Chemicals GB 50016 Code for Fire Protection in Building Design GB 50019 Design Code for Heating, Ventilation and Air Conditioning of Industrial Buildings GB 50057 Code for Design of Lightning Protection in Buildings GB 50058 Code for Design of Electrical Installations in Explosive Atmospheres GB 50140 Code for Design of Fire Extinguisher Distribution in Buildings GB 50184 Code for Construction Quality Acceptance of Industrial Metal Pipelines GB 50195 Design Code for Gas Generator Plants GB 50235 Code for Construction of Industrial Metal Pipelines GB 50236 Code for Construction of Field Equipment and Industrial Pipeline Welding GB 50316 Code for Design of Industrial Metal Pipelines GB 50683 Code for Construction Quality Acceptance of Field Equipment and Industrial Pipeline Welding GB 55037 General Code for Building Fire Protection JJG 915 Carbon Monoxide Detection and Alarm Instruments 3 Terms and Definitions The following terms and definitions apply to this document. 3.1 Calculated pressure The maximum working pressure that may occur under normal operating conditions. Note: The maximum working pressure during normal production operation is considered the highest working pressure. 3.2 Gas equipment All facilities through which gas flows. Note: Includes connected pipelines and equipment for other media (e.g., steam, nitrogen, water) up to the first shut-off device for the gas medium. 3.3 Curtain appliance Devices installed on gas pipelines to isolate gas and prevent leakage into isolated areas. Note: This function can be fulfilled by a single device or a combination of devices. 3.4 Shut-off appliance Various types of valves and facilities with opening/closing or on/off functions but unable to completely isolate gas. 3.5 Raw gas Unpurified gas. 3.6 Ferroalloy gas By-product gas from smelting ferroalloys in closed electric furnaces. Note: Main components are carbon monoxide and hydrogen. 3.7 Gas emission device Auxiliary devices installed on gas facilities to release gas into the atmosphere during purging, overpressure, excess volume, or abnormal conditions. Note: Includes vent heads, purge vent pipes, residual gas emission devices, and control valves. 3.8 Remaining gas emission device Devices installed on purified gas pipelines to discharge gas outside the system when pressure suddenly exceeds preset values or gas quality fails standards. Note: Includes gas emission towers and vent stacks. 3.9 Top gas pressure recovery turbine A device that recovers energy from pressure and temperature differences between by-product gas from ironmaking and users, driving a generator through an expansion turbine. 3.10 Blast furnace waste heat and pressure energy recovery gas turbine and blower coaxial unit A device that utilizes energy from pressure and temperature differences between by-product gas and users, driving a blower through an expansion turbine coaxial with the blower and motor. 3.11 Glasses valve Blind valve A special valve mechanism consisting of blind plates and transparent plates resembling glasses, performing reciprocating or swinging movements along the sealing surface to achieve shut-off or opening functions. Note: Includes closed-type, open-type, and sector-type spectacle valves. 4 General Requirements 4.1 The design of gas engineering projects shall be carried out by units holding corresponding engineering design qualifications. 4.2 Welding, construction, and acceptance of gas facilities shall comply with GB 50184, GB 50235, GB 50236, GB 50316, and GB 50683. 4.3 Construction shall follow the design; modifications require written consent from the design unit. Concealed parts of the project shall be inspected and approved by the construction unit, the owner, and the supervisor (if any) before closure. Upon completion, the construction unit shall prepare completion documentation and drawings for the owner's records. 4.4 Newly built, renovated, expanded, or overhauled gas facilities shall undergo inspection and acceptance before commissioning. Acceptance shall involve the owner's gas facility operation department and safety department.