GB4065-1983

Fire extinguishing agent--Bromochlorodifluoro-methane

二氟一氯一溴甲烷灭火剂

GB 4065-1983 é uma norma nacional chinesa obrigatória vigente: Fire extinguishing agent--Bromochlorodifluoro-methane. Setor: Máquinas. Foco: Segurança de produtos. Entrada em vigor: 1 de nov. de 1984.

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 Bromochlorodifluoromethane (commonly known as Halon 1211) fire extinguishing agents, specifically utilized for extinguishing Class B (flammable liquids or meltable solids) and Class C (flammable gases) fires. It is applicable to manufacturers and quality inspection agencies involved in the production and acceptance of this specific fire suppression agent. The standard outlines the physical and chemical properties required for the CF2ClBr compound in its liquid, gaseous, and storage states.

Requisitos técnicos

The standard specifies stringent physical and chemical parameters for the 1211 fire extinguishing agent to ensure its efficacy and safety. Key technical requirements include strict limits on the primary agent content, ensuring high purity by weight. Additionally, the standard regulates the maximum allowable presence of moisture and acidic substances (calculated as HBr) to prevent corrosion and maintain chemical stability within storage cylinders. Furthermore, the standard sets specific criteria for halide ions and evaporation residue limits to prevent the formation of harmful byproducts and ensure the agent leaves minimal deposits after discharge. The physical appearance of the agent is also governed by a strict chromaticity limit, requiring the liquid to be colorless and transparent, not darker than a specified standard. Compliance with these combined parameters is mandatory for product certification.

Métodos de ensaio

To verify compliance with the technical requirements, the standard outlines several precise laboratory testing methodologies. The primary agent content is determined using gas chromatography with a thermal conductivity detector, utilizing an area normalization method for calculation. Moisture content is measured using a phosphorus pentoxide absorption gravimetric method, passing the agent through specialized U-shaped absorption tubes. Other key evaluations include a colorimetric comparison method for acidic substances using a bromocresol green indicator, and a precipitation test for halide ions using a silver nitrate-methanol solution. Finally, evaporation residue is determined by weighing the remaining content in a porcelain dish after vaporization, and chromaticity is checked via a visual comparison against a standard platinum-cobalt color solution. These standardized methods ensure accurate and reproducible quality assessment.

Perguntas frequentes

What specific fire extinguishing agent does GB 4065-83 regulate?

This standard regulates Bromochlorodifluoromethane (commonly known as Halon 1211), a fire extinguishing agent specifically designed to suppress Class B (flammable liquids and meltable solids) and Class C (flammable gas) fires.

What are the inspection and compliance rules for Halon 1211 under this standard?

The standard mandates strict quality control, requiring manufacturers to guarantee that their products meet all specified technical requirements. Batch sampling requires testing 10% of cylinders (minimum 2), and failing any single parameter during re-inspection results in the entire batch being deemed non-compliant.

What testing methods are specified in GB 4065-83 for quality verification?

The standard specifies rigorous analytical procedures, including gas chromatography for purity determination, a phosphorus pentoxide absorption gravimetric method for moisture, and visual colorimetry for chromaticity, ensuring precise quality verification.

The summary above provides a high-level overview of GB 4065-83. To ensure complete compliance for your fire suppression 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 4065-83 today to access all detailed parameters, tables, and testing procedures.

Indicações de aplicabilidade

Tipo: Produto
CCS: C84
Órgão competente: National Fire and Rescue Administration
Comitê técnico: Ministry of Emergency Management