GB23394-2024

Respiratory protection—Positive pressure self-contained closed-circuit compressed oxygen breathing apparatus

呼吸防护正压式自给闭路压缩氧气呼吸器

GB 23394-2024 es una norma nacional china obligatoria vigente: Respiratory protection—Positive pressure self-contained closed-circuit compressed oxygen breathing apparatus. Sector: Sanitario. Enfoque: Seguridad de productos. Entrada en vigor: 1 ene 2026.

La aplicabilidad depende del alcance del producto, la vía de certificación, los avisos de la autoridad competente y las reglas de transición. Solicite una traducción o verifique la fuente antes de usar esta ficha en una decisión de cumplimiento.

Resumen de cumplimiento

Este resumen está disponible por ahora solo en inglés.

Alcance y aplicabilidad

This standard applies to positive pressure self-contained closed-circuit compressed oxygen breathing apparatuses (oxygen breathing apparatuses) used for respiratory protection. It is designed for professionals operating in hazardous environments, including mining and firefighting. It is mandatory for manufacturers producing these specific respiratory protection devices for the Chinese market. The standard does not apply to open-circuit compressed air breathing apparatuses.

Requisitos técnicos

The standard specifies comprehensive technical requirements for the high pressure, medium pressure, and low pressure systems of the apparatus. It mandates a minimum design service life of 8 years for the complete machine. Manufacturers must ensure all materials in contact with the user's skin and breathing gas are harmless to health. The apparatus must function reliably across a wide range of environmental conditions, including temperatures from -20°C to 60°C and atmospheric pressures from 70 kPa to 125 kPa. Key component requirements include stringent criteria for the face mask, which must offer a wide field of vision, high light transmittance, and resistance to high-speed particle impacts. The breathing bag or chamber must possess adequate volume and airtightness. The apparatus must maintain positive pressure during the entire breathing cycle to prevent external contaminants from entering. Additionally, the standard outlines specific performance criteria for the pressure reducer, pressure indicator, and alarm system to ensure reliable oxygen supply and user warning. The standard also addresses the breathing protection performance, setting limits for inhalation resistance, exhalation resistance, and inspired gas temperature. It dictates that the oxygen content in the inhaled gas must not fall below 21%, while carbon dioxide content must be strictly controlled. Apparatuses must also pass rigorous tests for flame retardancy, temperature resistance, and impact adaptability.

Métodos de ensayo

The standard outlines various testing methods to verify compliance, including: - Breathing protection performance test: Utilizes a simulated human breathing device to evaluate oxygen and CO2 content, breathing resistance, and inspired gas temperature under different thermal conditions. - Practical performance test: Involves human subjects performing simulated operational tasks (e.g., crawling, climbing, carrying weights) to assess ergonomics and real-world functionality. - Environmental resistance tests: Evaluates the apparatus's durability against temperature extremes, flame retardancy, and impact. - Component-specific tests: Includes airtightness tests for high, medium, and low-pressure systems, as well as strength tests for critical valves and cylinders.

Preguntas frecuentes

What products are regulated under GB 23394-2024?

GB 23394-2024 regulates positive pressure self-contained closed-circuit compressed oxygen breathing apparatuses. These are respiratory protection devices that isolate the user's respiratory system from the ambient environment, using compressed oxygen and absorbing exhaled carbon dioxide.

Are there any updates from the previous version of GB 23394?

Yes, GB 23394-2024 replaces GB 23394-2009. Key updates include new classification criteria based on low-pressure storage structure and cylinder type, added requirements for the overall service life design, and enhanced performance criteria for face masks, such as fog resistance and high-speed particle impact resistance.

Does GB 23394-2024 apply to mining environments?

Yes, the standard includes specific requirements for mining use. For instance, mining oxygen breathing apparatuses must not use aluminum alloy seamless cylinders, and electronic components must meet specific explosion-proof performance standards outlined in GB/T 3836.4.

The summary above provides a high-level overview of GB 23394-2024. To ensure complete compliance for your respiratory protection 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 23394-2024 today to access all detailed parameters, tables, and testing procedures.

Indicaciones de aplicabilidad

Tipo: Seguridad
CCS: C 73
ICS: 13.340.30
Organismo competente: Ministry of Emergency Management
Comité técnico: National Technical Committee on Personal Protective Equipment of Standardization Administration of China

Relaciones

Sustituye a:GB 23394-2009