GB19081-2025
Safety specification for dust explosion prevention in feed processing system
饲料加工系统粉尘防爆安全规范
GB 19081-2025 is a current mandatory Chinese national standard for Safety specification for dust explosion prevention in feed processing system. It appears in the Food compliance cluster with a product safety focus and has an implementation date of Feb 1, 2026.
Applicability depends on product scope, certification route, competent authority notices and transition rules. Requst for the translation or verify source before using this record in a compliance decision.
Compliance overview
Scope and applicability
This standard applies to the design, operation, and safety management of feed processing systems that involve combustible dust explosion hazards. It covers facilities handling feed ingredients, additives, and finished products. It is mandatory for all new and existing feed processing facilities in China. It does not apply to grain storage systems that are not part of a feed processing workflow.
Technical requirements
The standard mandates the classification of dust explosion hazardous areas into Zone 20, Zone 21, and Zone 22 based on the frequency and duration of combustible dust presence. It requires an overall defense-in-depth approach in system design, explicitly defining protective measures across structural, process, and electrical engineering disciplines. For buildings and structures, the standard specifies requirements for fire resistance, flooring, and wall surfaces. Control rooms and distribution rooms must be protected from dust ingress, and structural openings must be properly sealed after equipment installation. Regarding process equipment, specific safety requirements are outlined for machinery such as bucket elevators, conveyors, hammer mills, and mixers. Equipment must be constructed from non-combustible materials, prevent static electricity accumulation, and avoid friction-induced ignition sources. For instance, bucket elevators must be equipped with anti-slip and deviation protection devices, as well as continuous bearing temperature monitoring. Electrical systems must comply with general explosion-proof design principles, utilizing dust-ignition-proof lighting and appropriate grounding. The standard also details strict requirements for dust collection and pneumatic conveying systems, emphasizing negative pressure operation, minimum air velocities, and the mandatory use of explosion venting or suppression on pulse-jet bag filters.
Testing methods
Compliance is verified through a combination of on-site inspections and the review of design documents, equipment certification files, and testing records. The standard outlines verification procedures for hazardous area classification, general requirements, structural integrity, process equipment, electrical safety, dust collection systems, and explosion control measures. Facilities must maintain comprehensive documentation to prove compliance.
FAQs
What products and facilities are regulated under GB 19081-2025?
It applies to the design, operation, and safety management of feed processing systems that involve combustible dust explosion hazards, including facilities handling feed ingredients, additives, and finished products.
Are there any significant updates from the previous GB 19081-2008 version?
The 2025 version introduces Zone 20, 21, and 22 classifications, adds general requirements for process design and equipment selection, includes new building structure requirements, and mandates specific dust explosion prevention measures like inerting and isolation. It also removes previous requirements for air compressors and dryers.
How does GB 19081-2025 differ from international dust explosion standards?
While it aligns with international dust explosion concepts by referencing explosive dust environment zones (similar to IEC standards), it provides specific, localized compliance requirements tailored for the Chinese feed processing industry, including detailed structural and operational mandates. Engineers must follow this specific GB standard for Chinese market compliance.
The summary above provides a high-level overview of GB 19081-2025. To ensure complete compliance for your products entering the Chinese market, a precise and professional translation of the full technical specifications is essential. Purchase our high-quality English translation of GB 19081-2025 today to access all detailed parameters, tables, and testing procedures.
Applicability hints
- Type
- Safety
- CCS
- C 67
- ICS
- 13.230
- Competent department
- Ministry of Emergency Management
- Technical committee
- National Technical Committee on Work Safety of Standardization Administration of China
Relationships
Replaces:GB 19081-2008