GB5908-2024
Flame arrester
阻火器
GB 5908-2024 is a current mandatory Chinese national standard for Flame arrester. It appears in the Construction compliance cluster with a product safety focus and has an implementation date of Dec 1, 2025.
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 specifies the requirements for the design, manufacturing, and quality inspection of static flame arresters. It is applicable to devices operating under specific conditions where the working pressure of the medium ranges from 0.08 MPa to 0.16 MPa, and the working temperature ranges from -20°C to +150°C. Manufacturers of industrial piping systems and storage tanks must ensure their flame arresters comply with this standard. It does not apply to dynamic or other specialized types of flame arresters outside these operational parameters.
Technical requirements
The standard outlines comprehensive technical requirements for flame arresters, categorized by their installation position (end-of-line or in-line), flame arresting performance (deflagration or detonation), and endurance burning capability. Key requirements include: * Material and Structural Integrity: Components must be free from processing defects, and internal gaskets must not use combustible materials. The casing must withstand specific hydraulic strength tests without leakage or permanent deformation. * Corrosion Resistance: Devices must endure both salt spray and sulfur dioxide corrosion tests without significant damage to the outer shell. * Flame Arresting Performance: Depending on the classification, arresters must successfully stop deflagration or detonation (stable and unstable) flames under specified test conditions. Post-test pressure loss deviation must not exceed 20% of the pre-test value. * Endurance Burning and Operational Parameters: Devices are categorized into short-time burning and endurance burning types. They must also meet strict criteria for pressure loss, ventilation volume, and electrostatic bonding requirements as per GB/T 20801.4.
Testing methods
The standard mandates a series of rigorous testing procedures to validate compliance: * Corrosion Testing: Includes prolonged exposure in salt spray and sulfur dioxide environments to assess shell durability. * Strength and Sealing Tests: Hydraulic strength tests at 10 times the maximum working pressure, and pneumatic sealing tests to ensure no leakage occurs. * Deflagration and Detonation Tests: Specialized pipeline and end-of-line test rigs are used to simulate deflagration, stable detonation, and unstable detonation, verifying the arrester's ability to stop flame propagation. * Endurance Burning Tests: Evaluates the device's ability to prevent flashback during and after short-term (1-30 min) or long-term (2 hours) stable burning. * Flow and Pressure Testing: Measures pressure loss and ventilation volume to ensure deviations remain within ±10% of manufacturer specifications.
FAQs
What products are regulated under GB 5908-2024?
GB 5908-2024 regulates static flame arresters used in industrial piping and storage tank systems, specifically those operating within 0.08-0.16 MPa pressure and -20°C to +150°C temperature ranges.
Are there any updates from the previous version of GB 5908?
Yes, this version replaces GB 5908-2005 and GB/T 13347-2010. It introduces new terms like "end-of-line flame arrester" and "short time burning," updates classification and model compilation, and adds requirements for electrostatic bonding and specific test gases.
Does GB 5908-2024 reference international standards?
The standard primarily aligns with Chinese national standards, but it references concepts like the Maximum Experimental Safe Gap (MESG) for gas classification (IIA to IIC), which is a globally recognized parameter for explosion-proof equipment design.
The summary above provides a high-level overview of GB 5908-2024. To ensure complete compliance for your flame arresters entering the Chinese market, a precise and professional translation of the full technical specifications is essential. Purchase our high-quality English translation of GB 5908-2024 today to access all detailed parameters, classification tables, and rigorous testing procedures.
Applicability hints
- Type
- Product
- CCS
- C82
- ICS
- 13.220.20
- Competent department
- National Fire and Rescue Administration
- Technical committee
- National Technical Committee on Fire Protection of Standardization Administration of China
Relationships
Replaces:GB 5908-2005, GB/T 13347-2010