GB21976.8-2025

Escape apparatus for building fire—Part 8: Chemical oxygen respiratory protective devices for self-rescue from fire

建筑火灾逃生避难器材第8部分：化学氧消防自救呼吸器

GB 21976.8-2025 é uma norma nacional chinesa obrigatória que entrará em vigor: Escape apparatus for building fire—Part 8: Chemical oxygen respiratory protective devices for self-rescue from fire. Setor: Químicos. Foco: Segurança de produtos. Entrada em vigor: 1 de jan. de 2027.

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 the design, manufacturing, and inspection of chemical oxygen respiratory protective devices specifically intended for building fire escape. It does not apply to industrial respirators or filtered self-rescuers. This standard is mandatory for manufacturers producing or selling fire escape apparatus in the Chinese market.

Requisitos técnicos

The standard outlines comprehensive technical requirements for chemical oxygen respiratory protective devices, focusing on structural integrity, material durability, and protective performance. It mandates that the device must consist of a protective hood, face mask, chemical canister, and gas storage bag, ensuring immediate usability upon opening the seal. Material requirements include salt spray corrosion resistance for metal components and flame retardancy for exposed non-metallic parts. The oxygen generation agent must comply with the specifications in MT/T 427. The wearing mass of the device shall not exceed 1800g. Protective performance parameters strictly dictate the inhaled gas concentrations, including minimum oxygen levels and maximum carbon dioxide levels during the rated protection time. Additionally, the inhalation temperature must not exceed 55°C, and breathing resistance is tightly controlled. Manufacturers must ensure the gas storage bag does not collapse during the rated protection time.

Métodos de ensaio

Testing procedures encompass environmental variation and mechanical collision tests, protective performance evaluations using a simulated human head and breathing machine, and practical human wearing tests. All testing methods are strictly designed to verify compliance under simulated fire escape conditions. Material assessments include salt spray tests per GB/T 10125 and flammability tests per GB 2626.

Perguntas frequentes

What products are covered under GB 21976.8-2025?

It covers chemical oxygen respiratory protective devices designed for self-rescue during building fires, utilizing chemical oxygen generation agents to provide oxygen in hypoxic environments.

When will GB 21976.8-2025 be implemented?

The standard was issued on December 31, 2025, and will be officially implemented starting January 1, 2027.

How does the standard classify the respiratory devices?

The respiratory devices are classified by their rated protection time, specifically available in 15-minute and 30-minute specifications.

The summary above provides a high-level overview of GB 21976.8-2025. 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 21976.8-2025 today to access all detailed parameters, tables, and testing procedures.

Indicações de aplicabilidade

Tipo: Produto
CCS: C 85
ICS: 13.220.10
Órgão competente: National Fire and Rescue Administration
Comitê técnico: National Technical Committee on Fire Protection of Standardization Administration of China