GB4066-2017

Powder extinguishing agent

干粉灭火剂

GB 4066-2017 é uma norma nacional chinesa obrigatória vigente: Powder extinguishing agent. Setor: Construção. Foco: Segurança de produtos. Entrada em vigor: 1 de jul. de 2018.

A aplicabilidade depende do escopo do produto, da via de certificação, dos avisos da autoridade competente e das regras de transição. Solicite uma tradução ou verifique a fonte antes de usar este registro em uma decisão de conformidade.

Visão geral de conformidade

Esta visão geral está disponível por enquanto apenas em inglês.

Escopo e aplicabilidade

This standard applies to powder extinguishing agents where the first major chemical content is not less than 75%. It is designed for manufacturers and testing laboratories involved in BC dry powder and ABC dry powder extinguishing agents. This standard does not apply to ultra-fine powder extinguishing agents or Class D powder extinguishing agents, which are regulated by separate industry standards referenced as GA 578 and GA 979.

Requisitos técnicos

The standard specifies comprehensive physical and chemical requirements for dry powder extinguishing agents. Manufacturers must declare specific characterization values on packaging or manuals, including major component content, bulk density, and particle size distribution. The standard mandates strict tolerances for these published values to ensure product consistency. Key chemical parameters include the verification of sodium bicarbonate and ammonium dihydrogen phosphate contents. Physical properties such as moisture content, hygroscopicity, and electrical insulation are strictly regulated to guarantee long-term storage stability and operational safety. Furthermore, the standard outlines specific performance criteria for low-temperature resistance and water repellency to prevent caking under adverse environmental conditions. Different models of powder extinguishing agents are strictly prohibited from being mixed during equipment maintenance or refilling.

Métodos de ensaio

The standard outlines a series of standardized testing procedures to verify compliance. Chemical content is determined using titration and ignition methods detailed in the normative appendices. Physical tests include measuring bulk density using a graduated cylinder, assessing flowability via a specialized glass hourglass apparatus, and evaluating water repellency using a saturated sodium chloride environment. Particle size distribution is analyzed using a mechanical sieve shaker with specific mesh sizes. Fire extinguishing performance is evaluated through standardized fire models for Class A (wood crib) and Class B/C (heptane pan) fires, requiring at least two successful extinguishments out of three trials.

Perguntas frequentes

What products are regulated under GB 4066-2017?

It applies to powder extinguishing agents where the first major chemical content is not less than 75%. It does not apply to ultra-fine powder extinguishing agents regulated by GA 578 or Class D powder extinguishing agents regulated by GA 979.

Are there any updates from the previous version of GB 4066?

It consolidates the previous GB 4066.1-2004 and GB 4066.2-2004 into a single standard. Key updates include adding terminology, model representation methods, general requirements, and modifying several technical indicators such as bulk density, moisture content, and flowability.

How does GB 4066-2017 differ from ISO standards?

The standard was drafted with reference to ISO 7202:2012 (Fire protection — Fire extinguishing media — Powder). However, GB 4066-2017 includes specific Chinese national requirements, such as mandatory performance parameters and distinct testing models for Class A, B, and C fires.

The summary above provides a high-level overview of GB 4066-2017. 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 4066-2017 today to access all detailed parameters, tables, and testing procedures.

Indicações de aplicabilidade

Tipo: Produto
CCS: 83
ICS: 13.220.20
Órgão competente: National Fire and Rescue Administration
Comitê técnico: National Technical Committee on Fire Protection of Standardization Administration of China

Relações

Substitui:GB 4066.1-2004, GB 4066.2-2004