標(biāo)準(zhǔn)編號:	GB 19081-2025
中文名稱:	飼料加工系統(tǒng)粉塵防爆安全規(guī)范
英文名稱:	Safety specification for dust explosion prevention in feed processing system
行業(yè)分類:	GB    國家標(biāo)準(zhǔn)
發(fā)布機構(gòu):	國家市場監(jiān)督管理總局 國家標(biāo)準(zhǔn)化管理委員會
發(fā)布日期:	2025-01-24
實施日期:	2026-2-1
標(biāo)準(zhǔn)狀態(tài):	to be valid
替代舊標(biāo)準(zhǔn):	GB 19081-2008 飼料加工系統(tǒng)粉塵防爆安全規(guī)程
翻譯語言:	英文
文件格式:	PDF
中文字符數(shù):	18000 字
翻譯價格(元):	1260.0
交付時間:	付款后 1~3 個工作日

GB 19081-2025 Safety specification for dust explosion prevention in feed processing system 1 Scope This document specifies the division and scope of explosive dust hazardous areas in feed processing systems, as well as the general requirements, requirements for buildings (structures), requirements for process systems and equipment, electrical requirements, requirements for dust removal and pneumatic conveying systems, requirements for explosion control measures, and requirements for operational safety management of feed processing systems, and also describes the corresponding verification methods. This document is applicable to the design, operation, and safety management of feed processing systems that involve combustible dust explosion hazards. 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 12158 General requirements for preventing electrostatic accidents GB 15577 Safety regulations for dust explosion prevention and protection GB/T 15604 Terminology for dust explosion prevention and protection GB/T 15605 Specifications for pressure venting of dust explosion GB/T 26888 Grain and oil machinery - Magnetic separator GB/T 37241 Guide on inerting for the prevention of explosions GB 50016 Code for fire protection design of buildings GB 50057 Code for design protection of structures against lightning GB 50058 Code for design of electrical installations in explosive atmospheres GB 55037 General code for fire protection of buildings and constructions 3 Terms and definitions For the purposes of this document, the terms and definitions given in GB/T 15604 and the following apply. 3.1 feed processing process of converting feed materials into finished or semi-finished feed products through specific processing technology and equipment 3.2 feed processing system system comprising several feed processing equipment arranged into various processing sections according to process requirements, assembled within a building (or structure) 3.3 feed dust solid tiny particles of feed that can settle in the air due to their own weight but can also remain suspended in the air for a period of time Note: Including feed additives. 3.4 silo vertical cylindrical enclosed structure for storing bulk granular materials 3.5 feed processing workshop workshop for processing feed materials into feed products 3.6 hazardous area (dust) area in which combustible dust, in the form of a dust cloud is present, or may be expected to be present, in quantities such as to require special precautions for the construction, installation and use of equipment Note 1: Hazardous areas are divided into zones based upon the frequency and duration of the occurrence of explosive dust atmospheres (see GB/T 3836.35, 6.2). Note 2: The potential hazard of creating an dust cloud from a dust layer also needs to be considered. [Source: GB/T 3836.35-2021, 3.9] 3.7 Zone 20 a place in which an explosive dust atmosphere, in the form of a dust cloud in air, is present continuously, or for long periods or frequently [Source: GB/T 3836.35-2021, 3.25.1] 3.8 Zone 21 a place in which an explosive dust atmosphere, in the form of a dust cloud in air, is likely to occur in normal operation occasionally [Source: GB/T 3836.35-2021, 3.25.2] 3.9 Zone 22 area in which an explosive dust atmosphere, in the form of a dust cloud in air, is not likely to occur in normal operation but, if it does occur, will persist for a short period only Note: The potential of creating an explosive dust cloud from a dust layer also needs to be considered. [Source: GB/T 3836.35-2021, 3.25.3] 4 Division and scope of explosive hazardous areas for feed dust 4.1 The areas subject to dust explosion hazards in feed processing systems shall be divided into Zone 20, Zone 21, and Zone 22 based on the frequency and duration of the occurrence of explosive feed dust atmospheres. 4.2 The division and scope of explosive hazardous areas for feed dust shall be determined based on conditions such as processes, material characteristics, location of source of feed dust release, quantity and possibility of dust release, explosion conditions, ventilation and dust removal, and structure and layout of the areas. An example of area division is provided in Annex A. 4.3 When changes occur in processes, materials, equipment, structure and layout of areas, or work organization methods, the scope and level of explosive dust hazardous areas shall be re-evaluated, defined, and divided. 4.4 Throughout the duration of the entire operation, documentation on the division and description of zones shall be maintained, and the hazardous nature of the process and the zones shall be dynamically evaluated on a regular basis. 4.5 When changes occur in the classification and scope of explosive hazardous areas for feed dust, technical and management measures shall be promptly taken to ensure that equipment and facilities within the changed area meet the requirements for dust explosion prevention.

Contents Foreword III 1 Scope 2 Normative references 3 Terms and definitions 4 Division and scope of explosive hazardous areas for feed dust 5 Overall requirements 6 Requirements for buildings (structures) 6.1 General requirements 6.2 Ground 6.3 Walls 7 Requirements for process systems and equipment 7.1 General requirements 7.2 Bucket elevator 7.3 Chute 7.4 Screw conveyor and scraper conveyor 7.5 Bin discharger 7.6 Magnetic separation equipment 7.7 Grinder 7.8 Batching scale, mixer, and surge hopper 7.9 Heating device 8 Electrical requirements 8.1 General requirements 8.2 Electrical equipment 8.3 Electrical wiring 9 Requirements for dust removal and pneumatic conveying systems 10 Requirements for explosion control measures 10.1 General requirements 10.2 Venting 10.3 Inerting 10.4 Flameproof 11 Requirements for operational safety management 12 Verification methods Annex A (Informative) Examples of division of explosive dust hazardous areas in feed processing systems Bibliography

飼料加工系統(tǒng)粉塵防爆安全規(guī)范 1 范圍 本文件規(guī)定了飼料加工系統(tǒng)粉塵爆炸危險區(qū)域的劃分和范圍、總體要求、建(構(gòu))筑物要求、工藝系統(tǒng)和設(shè)備要求、電氣要求、除塵與氣力輸送系統(tǒng)要求、控爆措施要求及作業(yè)安全管理要求，描述了相應(yīng)的 證實方法。 本文件適用于涉及可燃性粉塵爆炸危險的飼料加工系統(tǒng)的設(shè)計、運行和安全管理。 2 規(guī)范性引用文件 下列文件中的內(nèi)容通過文中的規(guī)范性引用而構(gòu)成本文件必不可少的條款。其中，注日期的引用文件，僅該日期對應(yīng)的版本適用于本文件；不注日期的引用文件，其最新版本(包括所有的修改單)適用于本文件。 GB 12158 防止靜電事故通用要求 GB 15577 粉塵防爆安全規(guī)程 GB/T 15604 粉塵防爆術(shù)語 GB/T 15605 粉塵爆炸泄壓規(guī)范 GB/T 26888 糧油機械 磁選器 GB/T 37241 惰化防爆指南 GB 50016 建筑設(shè)計防火規(guī)范 GB 50057 建筑物防雷設(shè)計規(guī)范 GB 50058 爆炸危險環(huán)境電力裝置設(shè)計規(guī)范 GB 55037 建筑防火通用規(guī)范 3 術(shù)語和定義 GB/T 15604界定的以及下列術(shù)語和定義適用于本文件。 3.1 飼料加工 feed processing 通過特定的加工工藝和設(shè)備將飼料原料制成飼料成品或半成品的過程。 3.2 飼料加工系統(tǒng) feed processing system 由若干飼料加工設(shè)備，按工藝要求組成若干加工工段，組合在建(構(gòu))筑物內(nèi)的系統(tǒng)。 3.3 飼料粉塵 feed dust 在空氣中依靠自身重量能沉降下來，但也能持續(xù)懸浮在空氣中一段時間的固體飼料微小顆粒。 注：包括飼料添加劑。 3.4 筒倉 silo 儲存散粒物料的立式筒形封閉構(gòu)筑物。 3.5 飼料加工車間 feed processing workshop 用來將飼料原料加工成飼料產(chǎn)品的車間。 3.6 危險場所(粉塵) hazardous area (dust) 可燃性粉塵以粉塵云的形式大量出現(xiàn)或預(yù)期可能大量出現(xiàn)，以致要求對設(shè)備的結(jié)構(gòu)、安裝和使用采取專門預(yù)防措施的場所。 注1:根據(jù)爆炸性粉塵環(huán)境出現(xiàn)的頻次和持續(xù)時間的長短對危險場所進(jìn)行分區(qū)(見GB/T 3836.35的6.2)。 注2:由粉塵層形成的粉塵云的潛在危險也需考慮。 [來源：GB/T 3836.35—2021，3.9] 3.7 20區(qū) Zone 20 爆炸性粉塵環(huán)境以粉塵云的形式在空氣中連續(xù)或長時間存在或頻繁出現(xiàn)的場所。 [來源：GB/T 3836.35—2021，3.25.1] 3.8 21區(qū) Zone 21 正常運行時，爆炸性粉塵環(huán)境以粉塵云的形式在空氣中可能出現(xiàn)的場所。 [來源：GB/T3836.35—2021，3.25.2] 3.9 22區(qū) Zone 22 正常運行時，爆炸性粉塵環(huán)境以粉塵云的形式在空氣中不可能出現(xiàn)，如果出現(xiàn)也僅是短時間存在的場所。 注：還要考慮從粉塵層產(chǎn)生爆炸性粉塵云的可能性。 [來源：GB/T 3836.35—2021，3.25.3] 4 飼料粉塵爆炸危險區(qū)域的劃分和范圍 4.1 應(yīng)根據(jù)飼料粉塵爆炸性粉塵環(huán)境出現(xiàn)的頻繁程度和持續(xù)時間，將飼料加工系統(tǒng)的粉塵爆炸危險場所劃分為20區(qū)、21區(qū)和22區(qū)。 4.2 應(yīng)根據(jù)工藝、物料特性、飼料粉塵釋放源位置、釋放粉塵的數(shù)量及可能性、爆炸條件和通風(fēng)除塵、場所結(jié)構(gòu)和布局等條件確定飼料粉塵爆炸危險區(qū)域的劃分和范圍，區(qū)域的劃分示例見附錄A。 4.3 在工藝、物料、設(shè)備、場所結(jié)構(gòu)及布局、作業(yè)組織方式等發(fā)生變化時，應(yīng)重新對粉塵爆炸危險區(qū)域的范圍和等級進(jìn)行評估、界定和劃分。 4.4 在整個作業(yè)過程存續(xù)期內(nèi)，應(yīng)保存分區(qū)的劃分和說明文件，并定期對過程的危險性和分區(qū)進(jìn)行動態(tài)評估。 4.5 在飼料粉塵爆炸危險區(qū)域的分類和范圍發(fā)生變化時，應(yīng)及時采取技術(shù)措施和管理措施，使區(qū)域變化范圍內(nèi)的裝備和設(shè)施達(dá)到粉塵防爆的要求。