GB15605-2024

Specifications for pressure venting of dust explosion

粉尘爆炸泄压规范

GB 15605-2024 est une norme nationale chinoise obligatoire en vigueur : Specifications for pressure venting of dust explosion. Secteur : Machines. Thème principal : Sécurité des produits. Entrée en vigueur : 1 janv. 2026.

L’applicabilité dépend du périmètre du produit, de la voie de certification, des avis des autorités et des règles de transition. Demandez une traduction ou vérifiez la source avant d’utiliser cette fiche pour une décision de conformité.

Aperçu de conformité

Cet aperçu n’est actuellement disponible qu’en anglais.

Champ d’application

This standard applies to explosion pressure venting for process equipment and facilities in locations with combustible dust explosion hazards. It covers various dust-containing equipment, including containers, silos, pipelines, dust collectors, and bucket elevators. This standard is mandatory for all manufacturers and operators of dust-handling equipment in China. It explicitly does not apply to underground coal mines, fireworks, explosives, strong oxidizers, or areas with toxic or corrosive dusts.

Exigences techniques

The standard specifies comprehensive technical requirements for the design, selection, and installation of explosion venting devices. It mandates that venting measures must be selected based on the process, equipment, and dust explosion characteristics. The maximum reduced explosion pressure must not exceed the design strength of the protected equipment. For equipment located inside buildings, the standard requires the use of flameless venting devices or venting ducts (limited to 3 meters in length) to direct pressure and flames to the exterior. It also prohibits the use of standard valves, manholes, or observation windows as venting devices. The standard details specific design requirements for various equipment types, including bag filters, cyclone dust collectors, pipelines, and bucket elevators. It introduces parameters such as venting efficiency, static activation pressure, and nominal protection volume for flameless devices. Manufacturers must provide comprehensive technical documentation and permanent identification marks on all venting devices.

Méthodes d’essai

The standard describes verification methods focusing on document review and on-site inspection rather than specific physical testing. Compliance is verified by reviewing risk assessment files, venting design documents, and device selection records. Inspectors must verify the technical documentation, performance certification, and product labeling of the venting devices. It also references GB/T 16426 for determining dust explosion characteristic parameters like maximum explosion pressure and the explosion index.

Questions fréquentes

What products and facilities are regulated under GB 15605-2024?

GB 15605-2024 applies to process equipment and facilities in locations with combustible dust explosion hazards. It does not apply to underground coal mines, fireworks, explosives, strong oxidizers, or toxic/corrosive dusts.

Are there any significant updates from the previous GB/T 15605-2008 version?

The 2024 version transitions from a guideline to a mandatory specification. It introduces new terms like flameless explosion venting, adds requirements for device selection, installation, and maintenance, and removes building venting calculations. It also updates venting area calculation methods for containers and pipelines.

How does GB 15605-2024 differ from international standards like ISO or NFPA?

GB 15605-2024 aligns conceptually with international standards like EN 14491 and NFPA 68, focusing on deflagration venting. However, manufacturers must strictly adhere to the specific calculation formulas and parameters defined in this Chinese standard to achieve local compliance.

The summary above provides a high-level overview of GB 15605-2024. 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 15605-2024 today to access all detailed parameters, calculation formulas, tables, and testing procedures.

Indications d’applicabilité

Type: Sécurité
CCS: C67
ICS: 13.230
Autorité compétente: Ministry of Emergency Management
Comité technique: National Technical Committee on Work Safety of Standardization Administration of China

Relations

Remplace:GB/T 15605-2008