Standard No.:	GB 14544-2025
English Name:	Safety technical specification for production of vinyl chloride by acetylene
Chinese Name:	乙炔法生产氯乙烯安全技术规范
Chinese Classification:	A65    Metal Chemical Component Standard Substance
Professional Classification:	GB    National Standard
Source Content Issued by:	SAMR; SAC
Issued on:	2025-10-05
Implemented on:	2026-9-1
Status:	to be valid
Superseding:	GB 14544-2008 Production of vinyl chloride from calcium carbide and acetylene-safety technology code
Target Language:	English
File Format:	PDF
Word Count:	9500 words
Translation Price(USD):	285.0
Delivery:	via email in 1~3 business day

GB 14544-2025 Safety technical specification for production of vinyl chloride by acetylene 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 13.300 CCS A 65 National Standard of the People’s Republic of China GB 14544-2025 Replaces GB 14544-2008 Safety technical specification for production of vinyl chloride by acetylene 乙炔法生产氯乙烯安全技术规范 (English Translation) Issue date: 2025⁃10⁃05 Implementation date: 2026⁃09⁃01 Issued by the State Administration for Market Regulation the Standardization Administration of the People's Republic of China Contents Foreword 1 Scope 2 Normative references 3 Terms and definitions 4 Basic requirements 5 Production safety 6 Storage safety 7 Emergency disposal Safety technical specification for production of vinyl chloride by acetylene 1 Scope This document specifies the basic requirements, production safety, storage safety and emergency treatment requirements of vinyl chloride enterprises producing vinyl chloride by acetylene method, and describes the corresponding verification methods. This document is applicable to the production, storage and emergency disposal of enterprises producing vinyl chloride by acetylene method. 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/T 567.2 Bursting disc safety devices - Part 2: Application, selection and installation GB 12158 General requirements for preventing electrostatic accidents GB 17681 Technical specification for safety monitoring of major hazard installations for hazardous chemicals GB/T 29639 Guidelines for enterprises to develop emergency response plan for work place accidents GB 30077 Requirements on emergency rescue materials equipment for hazardous chemical enterprises GB 30871 Safety specifications of special work in hazardous chemicals enterprises GB 36894 Risk criteria for hazardous chemicals production unit and storage installations GB/T 37243 Determination method of external safety distance for hazardous chemicals production units and storage installations GB 39800.2 Specification of the provision of personal protective equipment - Part 2: Oil, chemical and gas industry GB 45673 General specification for safety production standardization of hazardous chemical enterprises GB 50016 Code of design on building fire protection and prevention GB 50160 Fire prevention code of petrochemical enterprise design GB 50351 Code for design of fire dike in storage tank farm GB 50489 Code for design of general plot plan and transportation of chemical industrial enterprises GB/T 50493 Standard for design of combustible gas and toxic gas detection and alarm for petrochemical industry GB/T 50779 Standard for blast resistant design of buildings in petrochemical engineering AQ 3026 Safety code for equipment repair in chemical manufactory AQ 3059 Specification for safety management of liquefied hydrocarbon storage tank farm of chemical industrial enterprises AQ 3060 Safety management specification for work of online leak sealing and hot - tapping 3 Terms and definitions There are no terms and definitions to be defined in this document. 4 Basic requirements 4.1 Safety 4.1.1 Explosion-proof tools shall be used in places where flammable and explosive media such as vinyl chloride, acetylene, and hydrogen exist. Spiked shoes and clothing prone to static electricity shall not be worn to enter the vinyl chloride production area. 4.1.2 Workers exposed to vinyl chloride shall wear qualified personal protective equipment according to the provisions of GB 39800.2. 4.1.3 When vinyl chloride equipment, containers and pipelines are out of service, blind plates shall be used to isolate them from normal operating equipment and facilities, and they shall be replaced by chlorine or purged by steam. The indicators shall meet the requirements of hot fire analysis qualification judgment indicators in GB 30871. 4.1.4 After the operation of opening vinyl chloride equipment, containers and pipelines, the air tightness test shall be carried out and qualified. Before putting into use, nitrogen replacement or steam purge shall be used until the oxygen content is less than 1% (volume fraction). 4.1.5 Before hot work in acid tanks for vinyl chloride purification, alkali tanks and acid tanks for hydrochloric acid analysis, the gases sampled and analyzed shall at least include vinyl chloride, acetylene and hydrogen. 4.1.6 During the normal production of the enterprise, water containing vinyl chloride shall be collected and treated before discharging it. 4.1.7 When the transportation of liquid vinyl chloride is stopped, the pipeline shall not be closed, and safety pressure relief measures shall be taken to prevent the pipeline from being full of liquid or causing the pressure to rise due to liquid gasification. 4.1.8 Minor repairs of gas holders shall be carried out at least once a year, medium repairs of gas holders shall be carried out at least once every three years, and major repairs of gas holders shall be carried out at least once every five years. Before the maintenance, an inspection and maintenance plan shall be prepared, an inspection and maintenance ledger shall be established, and it shall comply with the provisions of AQ 3026. If special matters that directly affect safety are encountered, maintenance shall be carried out in time. 4.1.9 Minor repairs of the gas holder shall at least include: external inspection of the gas holder and inspection and cleaning of the guide rails, addition or replacement of lubricating oil (grease) to the guide rails, replacement of worn guide wheels, local anti-corrosion of the outer surface and other maintenance with small workloads. 4.1.10 The repair content of the gas cabinet shall at least include: eliminating leakage of the bell jar wall, annular water seal, and ceiling plate; Inspect and repair water tank, overflow water seal, bell jar, bottom plate, guide wheel and guide rail, automatic venting components, valves and pipes; Check and debug the high and low limit safety interlocking devices and lighting; Check all items such as lightning protection and anti-static devices with heavy workload maintenance, including minor repairs of gas cabinets. 4.1.11 The overhaul content of the gas cabinet shall at least include: inspection, repair or replacement of the I-beam bracket, bell jar steam heating pipe, bell jar, wall plate, skeleton air intake riser, air outlet riser, vent riser, counterweight block, guide rails, columns, components, water seal groove; Check, measure and correct the sinking and inclination of the gas cabinet; Gas cabinet foundation repair; The inner and outer walls are comprehensively anti-corrosion Heavy workload maintenance such as insulation repair of water supply pipe and steam pipe, including all items of repair of gas cabinet. 4.1.12 There shall be no more than 2 operators in the filling place of vinyl chloride and rectified high boiling substances. 4.1.13 The control index of acetylene content in the gas entering the vinyl chloride compressor shall be formulated. 4.1.14 During the normal production period of an enterprise, no more than 2 process operators shall enter the same vinyl chloride production plant or storage place; No more than 6 people shall be involved in replacing catalysts and other operations. 4.1.15 The disposal of abnormal working conditions shall comply with the principles of timely retreat to a safe state, minimizing on-site disposal personnel, comprehensively identifying and analyzing risks and safely handling them, effectively preventing accidental energy release, and considering unified command as a whole. If the abnormal working conditions are in line with the start of the emergency plan, they shall be responded according to the response procedures and disposal measures of the emergency plan.