GB 18245-2024 Safety specification for dust explosion prevention and protection in tobacco processing system
1 Scope
This document specifies the general requirements for dust explosion prevention and protection in tobacco processing system, and the requirements for prevention of ignition sources of process equipment, dedusting facilities and equipment, electrical safety and safety management, and describes the verification methods.
This document is applicable to the design, operation, management and inspection of dust explosion prevention and protection in tobacco processing system.
2 Normative references
The following documents contain requirements 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 signs and guideline for the use
GB/T 3836.1 Explosive atmospheres - Part 1: Equipment - General requirements
GB/T 3836.2 Explosive atmospheres - Part 2: Equipment protection by flameproof enclosures “d”
GB/T 3836.3 Explosive atmospheres - Part 3: Equipment protection by increased safety "e"
GB/T 3836.16 Explosive atmospheres - Part 16: Electrical installations inspection and maintenance
GB 15577 Safety regulations for dust explosion prevention and protection
GB/T 15604 Terminology for dust explosion prevention
GB/T 15605 Guide for pressure venting of dust explosions
GB/T 16758 The classification and technical specification of exhaust hood
GB/T 17919 Directives for dust explosion protection for dust collectors in dust explosion hazardous area
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
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
tobacco processing system
general term for the production process of processing tobacco leaves into finished cigarettes
Note: The tobacco processing processes include those such as tobacco leaf re-curing, tobacco primary processing, rolling packaging and tobacco leaf reconstitution.
3.2
dedusting room
building (structure) where the equipment collecting and treating the tobacco dust is arranged in a centralized way
4 Overall requirements
4.1 According to the Criteria for determining major accident hazards in industrial and trade enterprises, enterprises shall identify and evaluate the dust explosion risk in tobacco processing system, and take dust explosion prevention and control measures to eliminate or reduce the generation of ignition sources in dangerous places of dust explosion.
4.2 Enterprises shall establish a zoning map for explosive tobacco dust hazard areas in accordance with the requirements of GB/T 3836.3 and GB 15577 and based on the frequency and duration of the explosive dust. The tobacco production area shall be divided into areas 20, 21, 22, and non-explosive hazard areas, indicating the type and scope of the areas, and taking technical measures to reduce the risk of dust explosions.
Contents Foreword iii 1 Scope 2 Normative references 3 Terms and definitions 4 Overall requirements 5 Requirements for prevention of ignition sources of process equipment 6 Requirements for dedusting facilities and equipment 7 Requirements for electrical safety 8 Safety management requirements 9 Verification methods Bibliography
