GB17440-2025

Safety specification for the protection of dust explosion for grain processing,storage and transportation system

粮食加工、储运系统粉尘防爆安全规范

GB 17440-2025 は現行の中国強制国家規格です：Safety specification for the protection of dust explosion for grain processing,storage and transportation system。業界：食品。テーマ：製品安全。施行日：2026年2月1日。

適用可否は製品範囲、認証ルート、所管当局の通知、移行規定によって異なります。コンプライアンス判断に使う前に、翻訳をご依頼いただくか公式情報源をご確認ください。

コンプライアンス概要

この概要は現在英語のみで提供しています。

適用範囲

This standard is mandatory and applies to the design, operation, and safety management of grain processing, storage, and transportation systems where combustible dust explosion hazards exist. It is essential for facilities handling wheat, corn, rice, soybeans, and oil crops. It does not apply to non-grain related dust environments or facilities without combustible dust risks.

技術要求

The standard specifies comprehensive requirements for dust explosion protection across various system aspects. It mandates the classification of hazardous areas into Zone 20, Zone 21, and Zone 22 based on the frequency and duration of explosive dust presence. For process systems and equipment, it outlines design principles to minimize dust generation and ignition sources, including specific requirements for bucket elevators, conveyors, and grain drying systems. Equipment must incorporate explosion control measures such as venting, suppression, or inerting. Regarding electrical requirements, the standard details the selection of explosion-proof equipment, wiring, and lightning/static protection according to the classified zones. It also sets strict limits on maximum surface temperatures to prevent dust ignition. Additionally, it covers building structure, dust control, dust cleaning, pneumatic conveying, and operational safety management, emphasizing the need for regular cleaning and strict hot work procedures.

試験方法

Compliance is verified through site inspections and reviews of design documents, assessment files, process control records, and on-site markings. Verification covers area classification, process equipment, electrical installations, building structures, dust control systems, and operational safety management records.

よくある質問

What products are regulated under GB 17440-2025?

It regulates grain processing, storage, and transportation systems, including facilities handling wheat, corn, rice, soybeans, and oil crops where combustible dust hazards exist.

Are there any updates from the previous version of GB 17440?

Yes, GB 17440-2025 replaces GB 17440-2008. Key updates include new terminology for hazardous areas (Zones 20, 21, 22), added requirements for grain drying systems, variable frequency motor temperature control, and enhanced explosion control measures.

How does GB 17440-2025 classify hazardous areas?

It classifies areas into Zone 20 (continuous dust presence), Zone 21 (occasional presence during normal operation), and Zone 22 (unlikely presence, short duration only) based on release sources and ventilation conditions.

The summary above provides a high-level overview of GB 17440-2025. 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 17440-2025 today to access all detailed parameters, tables, and testing procedures.

適用のヒント

種別: 安全
CCS: C67
ICS: 13.230
所管部門: Ministry of Emergency Management
技術委員会: National Technical Committee on Work Safety of Standardization Administration of China