Standard No.:	GB 51283-2020
English Name:	Fire protection standard for engineering design of fine chemical enterprise
Chinese Name:	精细化工企业工程设计防火规范
Professional Classification:	GB    National Standard
Issued by:	MOHURD
Issued on:	2020-01-06
Implemented on:	2020-10-1
Status:	valid
Language:	English
File Format:	PDF
Word Count:	30000 words
Price(USD):	900.0
Delivery:	via email in 1 business day

Codeofchina.com is in charge of this English translation. In case of any doubt about the English translation, the Chinese original shall be considered authoritative. According to the requirements of Document JIANBIAO [2014] No. 189 issued by the Ministry of Housing and Urban-Rural Development of the People's Republic of China, “Notification on printing and distributing the Plan 2015 for development and revision of national engineering construction standards and specifications”, this standard is developed by Shanghai HuaYi Engineering Co., Ltd and Shanghai General Public Security and Fire Brigade jointly with the parties concerned. In the preparation of this standard, the standard preparation team conducted in-depth investigations on some production enterprises in domestic (fine) chemical zones (parks) , drawn from practical experience of engineering fire protection design of domestic fine chemical enterprises, and assimilated relevant domestic and foreign outcomes in construction standards and specifications, to finalize this standard based on extensive consultations, through repeated discussions, modifications and improvements, and review. The main technical contents of this standard include general, terms, classification of fire hazards, plant siting and general layout, process system and production facilities, storage facilities, pipeline arrangement, fire prevention of industrial building (warehouse), fire-fighting facilities, heating, ventilation and air conditioning, and electrical, etc. The provisions printed in bold type in this standard are compulsory and must be enforced strictly. The Ministry of Housing and Urban-Rural Development of the People's Republic of China is in charge of the administration of this standard and the explanation of the compulsory provisions, China Petroleum & Chemical Engineering Survey and Design Association is in charge of routine management, and Shanghai HuaYi Engineering Co., Ltd is in charge of the explanation of specific technical contents. In case of any comment or suggestion in the process of implementing this standard, please send it to Shanghai HuaYi Engineering Co., Ltd (Address: No.788 Chengjiang Road, Minhang District, Shanghai; 200241 China) for reference in future revision. Contents 1 General 1 2 Terms 1 3 Classification of fire hazards 3 4 Plant siting and general layout 3 4.1 Plant siting 3 4.2 General layout 8 4.3 In-plant roads 12 5 Process system and production facilities 12 5.1 General requirements 12 5.2 Reactor 14 5.3 Pumps and compressors 15 5.4 Thermal fluid boiler 16 5.5 Arrangement in production facilities 17 5.6 Wastewater treatment and circulating water 22 5.7 Pressure relief 23 5.8 Process monitoring and automatic control 26 6 Storage facilities 27 6.1 General requirements 27 6.2 Storage tank for combustible liquid 27 6.3 Storage tanks for liquefied hydrocarbon, combustible gas or combustion-supporting gas 31 6.4 Loading and unloading facilities for tank trucks carrying combustible liquids and liquefied hydrocarbons 33 6.5 In-plant warehouse 34 7 Pipeline arrangement 35 7.1 In-plant pipelines 35 7.2 Process and utilities pipelines 35 7.3 Pipelines of process wastewater containing combustible liquid 37 8 Fire prevention of plant building (warehouse) 38 8.1 Fire resistance rating of plant building (warehouse) and fire endurance of construction elements 38 8.2 Height, story number and area of plant building (warehouse) 39 8.3 Plane arrangement of plant building (warehouse) 41 8.4 Explosion protection of plant building (warehouse) 43 8.5 Safe evacuation of plant building (warehouse) 43 9 Fire fighting facilities 45 9.1 General requirements 45 9.2 Enterprise fire station 45 9.3 Water supply for fire fighting 45 9.4 Fire hydrant system 47 9.5 Automatic fire suppression system 48 9.6 Arrangement of fire extinguishers 49 9.7 Water drainage for fire fighting 49 10 Heating, ventilation and air-conditioning 50 10.1 Heating 50 10.2 Ventilation and air conditioning 50 10.3 Positive pressure ventilation 52 10.4 Emergency ventilation 53 10.5 Smoke control and exhaust system 54 11 Electrical 54 11.1 Power source and power distribution for fire fighting 54 11.2 Transformer, distribution cabinet and cabling 55 11.3 Fire emergency lighting 56 11.4 Lightning protection and static protection 56 11.5 Automatic fire alarm system 57 Annex A Starting and ending points of fire separation distance 58 Explanation of wording in this standard 59 List of quoted standards 60 Fire protection standard for engineering design of fine chemical enterprise 1 General 1.0.1 This standard is intended to standardize the fire protection design of fine chemical enterprises, prevent and reduce fire hazards, and ensure personal and property safety. 1.0.2 This standard is applicable to fire protection design for new construction, extension and retrofit of fine chemical enterprises with a total capacity of liquefied hydrocarbon tanks up to 300m3 and individual tank capacity up to 100m3, a total capacity of Class AB and Class B liquid tanks up to 5,000m3 and individual tank capacity up to 1,000m3, a total capacity of Class C liquid tanks up to 25,000m3 and individual tank capacity up to 5,000m3, and a total capacity of combustible gas tanks up to 5,000m3 and individual tank capacity up to 1,000m3, in the storage farm. 1.0.3 The engineering design for fire protection of fine chemical enterprises (the “fire protection design”) shall follow the relevant national approaches and policies, and adopt new techniques, new materials and new equipment on the basis of continuous drawing from production, construction and scientific experiments, so as to be safe, serviceable, technologically advanced, and economical. 1.0.4 The fire protection design shall not only comply with this standard but also current relevant national standards. 2 Terms 2.0.1 fine chemical enterprise factory that produces high-value-added and technology-intensive fine chemical products with specific functions, for specific uses, in small batches and multiple varieties, from primary or secondary chemicals and biomass materials produced in the basic chemical industry as initial feedstock through deep processing 2.0.2 production facilities process equipment required to complete the production process (production of products), including production equipment, industrial building, auxiliary equipment and various supporting facilities   2.0.3 process system system composed of reactor, tower, heat exchanger, container, thermal fluid boiler, pump and other process equipment, pipelines and control instruments 2.0.4 overall major facilities buildings and facilities, e.g. plant-wide office, control, laboratory, power transformation and distribution, fire pump house (station) and enterprise fire station, which may cause heavy casualties and property losses in case of fire 2.0.5 enclosed industrial building production-purpose building with a roof, all or part of which adopts uniformly distributed enclosed wall (including door and window) outer envelopes which cover an area exceeding 1/2 of the surface areas of the building's outer enclosure (excluding the roof) or has a perimeter exceeding 1/4 of the perimeter of the building's outer enclosure, or in any floor of which there is a functional room locally with an closed enclosure covering an area exceeding 1/2 of the floor area 2.0.6 semi-enclosed industrial building production-purpose building with a roof, part of which adopts uniformly distributed enclosed wall (including door and window) outer envelopes which cover an area not exceeding 1/2 of the surface areas of the building's outer enclosure (excluding the roof) or has a perimeter not exceeding 1/4 of the perimeter of the building's outer enclosure, or in any floor of which there is a functional room locally with an closed enclosure covering an area not exceeding 1/2 and not less than 5% of the floor area 2.0.7 opened industrial building production-purpose building with a roof, which is free of outer envelopes, or in any floor of which there is a functional room locally with an closed enclosure covering an area not exceeding 5% of the floor area 2.0.8 joint building complex building with sites for functional uses, e.g. production, storage, utilities and auxiliaries, adjacently distributed according to the characteristic requirements of process production   2.0.9 storage tanks within production workshop tanks that are arranged in or at the edge of production facilities in order to balance production, product quality inspection or single-exercise input, etc. depending on process requirement, and do not directly participate in the processes, in normal production, excluding the containers in the processes 2.0.10 non-electrical equipment equipment that contains no electrical components and can cause explosion due to non-electrical potential ignition source when used in explosive environment 2.0.11 protection air lock service space that is equipped with forced draft and compartmented by fire partition so it is enabled to prevent spread of fire, buffer explosion shock wave and limit diffusion of explosive substances 3 Classification of fire hazards 3.0.1 The fire hazard classification of production and storage articles shall comply with the current national standard GB 50016 Code for fire protection design of buildings. The fire hazard classification of liquefied hydrocarbons and combustible liquids shall comply with the current national standard GB 50160 Fire prevention code of petrochemical enterprise design. 3.0.2 In case of production or storage with different fire hazards in a plant building or warehouse, the fire hazard classification of the plant building or warehouse shall be comply with the current national standard GB 50016 Code for fire protection design of buildings. 4 Plant siting and general layout 4.1 Plant siting 4.1.1 Plant siting shall meet local requirements of the overall urban and rural planning. 4.1.2 The siting shall be reasonably determined according to the characteristics and fire hazard classes of enterprises, adjacent enterprises or facilities, as well as natural conditions such as wind direction and topography.   4.1.3 Siting of an enterprise emitting harmful substances shall be on the windward side of the neighboring residential areas or towns with the yearly-minimum-frequency wind direction, and shall avoid wind trapping areas. For enterprises with higher cleanliness requirements, if severe air pollution cannot be kept away from, siting shall be on the windward side of the yearly-maximum-frequency wind direction or on the leeward side of the yearly-minimum-frequency wind direction. 4.1.4 Regional flood drains shall not pass through any production area of the plant. 4.1.5 The fire separation distance between fine chemical enterprise and adjacent factory or facility shall not be less than that specified in Table 4.1.5. Table 4.1.5 Fire separation distance between fine chemical enterprise and adjacent factory or facility (m) Adjacent factory or facility Liquefied hydrocarbon storage tank Class A and B liquid storage tanks Storage tank for combustible gases Class A and B production facilities Overall major facilities (except enterprise fire stations) Total capacity Vt or individual capacity Vi (m3) Total capacity Vt (m3) Total capacity Vt (m3) Vt≤50 Vi≤20 50

1 General 2 Terms 3 Classification of fire hazards 4 Plant siting and general layout 4.1 Plant siting 4.2 General layout 4.3 In-plant roads 5 Process system and production facilities 5.1 General requirements 5.2 Reactor 5.3 Pumps and compressors 5.4 Thermal fluid boiler 5.5 Arrangement in production facilities 5.6 Wastewater treatment and circulating water 5.7 Pressure relief 5.8 Process monitoring and automatic control 6 Storage facilities 6.1 General requirements 6.2 Storage tank for combustible liquid 6.3 Storage tanks for liquefied hydrocarbon, combustible gas or combustion-supporting gas 6.4 Loading and unloading facilities for tank trucks carrying combustible liquids and liquefied hydrocarbons 6.5 In-plant warehouse 7 Pipeline arrangement 7.1 In-plant pipelines 7.2 Process and utilities pipelines 7.3 Pipelines of process wastewater containing combustible liquid 8 Fire prevention of plant building (warehouse) 8.1 Fire resistance rating of plant building (warehouse) and fire endurance of construction elements 8.2 Height, story number and area of plant building (warehouse) 8.3 Plane arrangement of plant building (warehouse) 8.4 Explosion protection of plant building (warehouse) 8.5 Safe evacuation of plant building (warehouse) 9 Fire fighting facilities 9.1 General requirements 9.2 Enterprise fire station 9.3 Water supply for fire fighting 9.4 Fire hydrant system 9.5 Automatic fire suppression system 9.6 Arrangement of fire extinguishers 9.7 Water drainage for fire fighting 10 Heating, ventilation and air-conditioning 10.1 Heating 10.2 Ventilation and air conditioning 10.3 Positive pressure ventilation 10.4 Emergency ventilation 10.5 Smoke control and exhaust system 11 Electrical 11.1 Power source and power distribution for fire fighting 11.2 Transformer, distribution cabinet and cabling 11.3 Fire emergency lighting 11.4 Lightning protection and static protection 11.5 Automatic fire alarm system Annex A Starting and ending points of fire separation distance Explanation of wording in this standard List of quoted standards