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:	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 business day

GB 6222-2025 Safety specification for gas of industrial enterprises English, Anglais, Englisch, Inglés, えいご Safety specification for gas of industrial enterprises 1 Scope This document specifies the safety management and technical requirements for the design, management, running, operation, maintenance, repair and emergency response of facilities such as producers, water gas furnaces, semi-water gas furnaces, vertical continuous carbonization furnaces, blast furnaces, converters, coke ovens and ferroalloy furnaces within the factory of industrial enterprises used for the production, recovery, purification, transmission and distribution, storage and use of gas. It also describes the corresponding substantive approach. This document is applicable to the gas equipment within the factory of industrial enterprises. This document is not applicable to gas equipment that use gas as raw material to produce methane, methanol, hydrogen and other industrial products, as well as urban gas main pipes, branch pipes, courtyard pipe networks and pressure regulation in urban areas. 2 Normative references The following documents contain provisions which, through reference in this text, constitute provisions of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. GB 2894 Safety colours and safety signs GB 4053 (all parts) Safety requirements for fixed steel ladders and platform GB 8958 Safety regulation for working under hazardous condition of the oxygen deficiency GB 12358 Gas detection and alarm instruments for workplace - General technical requirements GB 16912 Safety technical regulation for oxygen and relative gases produced with cryogenic method GB 18218 Identification of major hazard installations for hazardous chemicals GB 50016 Code for fire protection design of buildings GB 50019 Design code for heating ventilation and air conditioning of industrial buildings GB 50057 Code for design protection of structures against lightning GB 50058 Code for design of electrical installations in explosive atmospheres GB 50140 Code for design of extinguisher distribution in buildings GB 50184 Code for acceptance of construction quality of industrial metallic piping GB 50195 Design code for producer gas station GB 50235 Code for construction of industrial metallic piping engineering GB 50236 Code for construction of field equipment, industrial pipe welding engineering GB 50316 Design code for industrial metallic piping GB 50683 Code for acceptance of field equipment, industrial pipe welding construction quality GB 55037 General code for fire protection of buildings and constructions JJG 915 Verification regulation of carbon monoxide detector 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 calculated pressure maximum working pressure that may occur under normal operating conditions Note: Under normal production and operation conditions, the maximum working pressure that the gas equipment may reach is its highest working pressure. 3.2 gas equipment all facilities through which gas flows Note: All pipelines and equipment of other media (such as steam, nitrogen and water) connected to the gas equipment, and the first shutoff appliance to the gas medium is regarded as gas equipment. 3.3 curtain appliance devices installed on gas piping to isolate gas and prevent gas leakage into the isolated zone Note: A device with this function may be an independent facility or a combination of facilities. 3.4 shutoff appliance all kinds of valves and facilities that have the opening, closing or on-off functions, but cannot isolate gas and cannot be used alone as curtain appliance Note: Including gate valves, sealing butterfly valves, ball valves, globe valves, plug valves, and water seals. 3.5 raw gas unpurified gas 3.6 ferroalloy gas by-product gas produced during the smelting of ferroalloys in a closed electric furnace Note: The main components are carbon monoxide and hydrogen. 3.7 gas emission device auxiliary devices installed on gas equipment, which is used to discharge the gas inside the equipment into the atmospheric environment when the gas equipment is purged and replaced, under overpressure, overquantity or abnormal working conditions Note: Including gas release heads, purge and emission pipes, remaining gas emission devices, and control valves. 3.8 remaining gas emission device device installed on the clean gas piping that discharges gas outside the system when the gas pressure suddenly rises above the preset value or the gas quality is unqualified in the gas supply and use process Note: Including gas emission towers, and emission chimneys. 3.9 top gas pressure recovery turbine device that utilizes the energy contained in the pressure difference and temperature difference between the by-product gas of ironmaking and the user, recovers the energy through an expansion turbine, and then drives a generator to generate electricity 3.10 blast furnace waste heat and pressure energy recovery gas turbine and blower coaxial unit device that utilizes the energy contained in the pressure difference and temperature difference between the by-product gas of ironmaking and the user, and drives the air blower to rotate coaxially via an expansion turbine, an air blower and an electric motor 3.11 glasses valve blind valve special valve with valve plate mechanism resembling a pair of glasses, consisting of a blank plate, a through plate and other components, which moves back and forth or swings along the sealing surface to achieve the functions of cutting off and opening Note: Including closed-type glasses valve, open-type glasses valve and fan-shaped glasses valve.

Contents Foreword i 1 Scope 2 Normative references 3 Terms and definitions 4 General requirements 5 Production, recovery and purification of gas 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 (COG) 5.5 Production and purification of gas from vertical continuous carbonization furnace 5.6 Recovery and purification of converter gas 5.7 Recovery and purification of ferroalloy gas 5.8 Leakage test of gas purification facilities 6 Gas piping 6.1 Structure and construction of gas piping 6.2 Laying of gas piping 6.3 Testing of gas piping 6.4 Test of gas piping 6.5 Corrosion resistance of gas piping 7 Gas equipment and piping accessories 7.1 Burning device 7.2 Curtain and shutoff appliances 7.3 Emission device 7.4 Condensate drainer 7.5 Steam pipe and nitrogen pipe 7.6 Compensator 7.7 Explosion relief device 7.8 Manhole, handhole and inspection pipe 8 Fuel gas pressurizing stations, mixing stations, and gas exhauster rooms 8.1 Building safety requirements 8.2 General requirements 9 Gasholder 9.1 General requirements 9.2 Wet-type gasholders 9.3 Waterless gasholders 10 Operation and maintenance of gas equipment 10.1 Operation of gas equipment 10.2 Maintenance of gas equipment 11 Gas dispatching and protection 11.1 Gas dispatching 11.2 Gas protection station (team) 11.3 Carbon monoxide concentration monitoring and alarm devices 12 Emergency response 12.1 General requirements 12.2 Emergency response to gas poisoning accidents 12.3 Emergency response to gas fire accidents 12.4 Emergency response to gas explosion accidents 13 Substantive approaches Bibliography