GB21976.7-2012

Escape apparatus for building fire - Part 7: Filtering respiratory protective devices for self-rescue from fire

建筑火灾逃生避难器材第7部分：过滤式消防自救呼吸器

GB 21976.7-2012 é uma norma nacional chinesa obrigatória vigente: Escape apparatus for building fire - Part 7: Filtering respiratory protective devices for self-rescue from fire. Setor: Construção. Foco: Segurança de produtos. Entrada em vigor: 1 de jun. de 2013.

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 disposable filtering respiratory protective devices used for self-rescue during building fires, specifically in environments where the oxygen concentration is not less than 17%. It covers the types, models, technical requirements, and testing methods for these devices. It is mandatory for manufacturers producing fire escape equipment for the Chinese market. The standard references EN 403:2004 and other national standards like GB 2626-2006.

Requisitos técnicos

The standard specifies comprehensive requirements for filtering respiratory protective devices, including structural integrity, material properties, and protective performance. Key technical parameters include wearing weight, material flame retardancy, and resistance to mechanical collision and environmental changes. For protective performance, it sets strict limits on carbon monoxide penetration concentration, inhalation temperature, and breathing resistance. It also mandates a minimum smoke filtration efficiency and specific requirements for the protective hood, such as leakage coefficients, field of vision, and light transmittance. Additionally, the standard requires the device to maintain mechanical structural integrity under high carbon monoxide concentrations and specifies minimum connection strength between the filter and hood. Manufacturers must ensure the device is easy to wear and does not impede the user's movement during escape.

Métodos de ensaio

Testing methods include visual inspection for structure and electronic weighing for mass. Material tests cover aging, flame retardancy (referencing GB 2626-2006), and packaging strength. Performance testing involves simulated breathing machines to evaluate carbon monoxide protection and smoke filtration efficiency. Hood performance is tested for leakage, field of vision, and carbon dioxide content. Finally, a human wearability test is conducted to evaluate comfort and practical usability.

Perguntas frequentes

What products are regulated under GB 21976.7-2012?

It regulates disposable filtering respiratory protective devices designed for self-rescue from building fires where oxygen levels are at least 17%.

Are there mandatory sections in this standard?

Yes, clauses 5.1 to 5.8, Chapter 7, and 8.1.1 are mandatory. Compliance with these sections is legally required for market access.

What is the shelf life of the products specified in this standard?

The standard specifies a general product validity period of 3 years when stored under appropriate conditions.

The summary above provides a high-level overview of GB 21976.7-2012. 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 21976.7-2012 today to access all detailed parameters, tables, and testing procedures.

Indicações de aplicabilidade

Tipo: Produto
CCS: C85
ICS: 13.220.10
Órgão competente: National Fire and Rescue Administration
Comitê técnico: National Technical Committee on Fire Protection of Standardization Administration of China