GB17919-2025
Safety specification for explosion protection in combustible dust collection system
可燃性粉尘除尘系统防爆安全规范
GB 17919-2025 is an upcoming mandatory Chinese national standard for Safety specification for explosion protection in combustible dust collection system. It appears in the Machinery compliance cluster with a product safety focus and has an implementation date of Nov 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, manufacturing, installation, acceptance, use, and maintenance of dust collection systems used in areas subject to dust explosion hazards. It comprehensively covers various equipment including dry dust collectors, wet dust collectors, and integrated dust removal machines. This standard is mandatory for all industrial facilities handling combustible dusts, but it explicitly does not apply to underground coal mines, fireworks, explosives, and strong oxidizer dust locations.
Technical requirements
The standard outlines stringent general requirements, emphasizing that dust collection systems must be designed based on dust explosion risk assessments. It mandates that systems be set up independently by process zones; different types of combustible dusts or dust and combustible gases must not share the same collection system. Specific prohibitions include the use of electrostatic precipitators and gravity settling chambers. For combustible metal dusts (such as aluminum and magnesium), the standard requires negative pressure operation and atmosphere inertization. For equipment, it specifies that dry dust collectors must use steel metal materials with sufficient design strength to withstand maximum explosion pressures. Filter materials must be flame-retardant and anti-static. The standard details construction requirements for hoppers, lock-air ash discharging devices, and pneumatic/scrap/screw ash conveyors to prevent dust accumulation. For wet dust collectors, it mandates specific water flow rates and level monitoring, with special provisions for dusts that generate combustible gases (like hydrogen) when exposed to water. Regarding explosion control measures, the standard requires dry systems to adopt one or more methods from venting, isolation, suppression, explosion resistance, and inertization. Isolation measures must not be used alone and must be combined with other protective measures. It also sets specific parameters for venting areas, isolation device selection based on dust explosion characteristics, and suppressant agent compatibility. Finally, the standard mandates comprehensive monitoring and warning systems. Parameters such as air pressure difference, cleaning pressure, ash discharge faults, and hopper temperatures must be continuously monitored. Alarm signals must interlock with the control system to trigger automatic shutdowns during critical failures. It also requires systems to have the capability to transmit safety data to enterprise-level risk monitoring platforms.
Testing methods
The standard primarily utilizes on-site inspection and document verification as its confirmation methods. Compliance is evaluated by reviewing design and selection documents, installation acceptance records, and maintenance logs. Engineers must ensure all design calculations and equipment certifications are properly documented for regulatory review, rather than relying solely on laboratory testing of the final assembly.
FAQs
What products and facilities are regulated under GB 17919-2025?
It applies to the design, manufacturing, installation, acceptance, use, and maintenance of dust collection systems in areas subject to dust explosion hazards. However, it does not apply to underground coal mines, fireworks, explosives, or strong oxidizers.
Are there any significant updates from the previous GB/T 17919-2008 version?
The 2025 version is a mandatory GB standard replacing the previous recommended GB/T 17919-2008. It introduces expanded requirements for system design, specific equipment types (like dry and wet dust collectors), explosion control measures, monitoring parameters, and safety management. It also explicitly prohibits the use of electrostatic precipitators and gravity dust collectors.
How does GB 17919-2025 differ from international standards like ISO or NFPA?
While it aligns with general dust explosion protection principles, it incorporates specific Chinese compliance requirements, such as mandatory integration with corporate safety risk monitoring systems and strict isolation rules for different process zones. Engineers must follow this specific GB standard for Chinese market access rather than relying solely on international frameworks.
The summary above provides a high-level overview of GB 17919-2025. 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 17919-2025 today to access all detailed parameters, tables, and testing procedures.
Applicability hints
- Type
- Management
- CCS
- C67
- 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/T 17919-2008