GB5172-1985

The rule for radiation protection of particle accelerators

粒子加速器辐射防护规定

GB 5172-1985 es una norma nacional china obligatoria vigente: The rule for radiation protection of particle accelerators. Sector: Sanitario. Enfoque: Seguridad de productos. Entrada en vigor: 1 ene 1986.

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 particle accelerator facilities where the energy of accelerated particles is below 100MeV. It excludes medical accelerators and sealed neutron tubes or similar portable accelerators. Facilities must comply with these mandatory radiation protection rules.

Requisitos técnicos

The standard specifies comprehensive dose equivalent limits for occupational workers and the public, including limits for external, internal, and combined exposures. It mandates the design of radiation shielding based on maximum radiation output, with a safety factor of 2. Facilities must implement radiation safety systems, including interlock devices, warning lights, and emergency stop switches. Accelerator facilities must have ventilation systems to exhaust toxic gases and airborne radioactive substances. The standard also outlines requirements for radiation safety management, environmental protection, and radioactive waste treatment, referencing GBJ 8-74 and IAEA Safety Series No. 9.

Métodos de ensayo

Testing involves personal dose monitoring for external and internal exposures, and area monitoring to classify zones into supervised and controlled areas. Surface contamination monitoring is required for areas using tritium targets or handling activated materials. Facilities must regularly calibrate radiation monitoring instruments at intervals not exceeding one year. Airborne radioactivity concentration monitoring is also mandated for relevant zones.

Preguntas frecuentes

What types of accelerators are covered under GB 5172-1985?

It covers particle accelerators with a single-nucleon energy below 100MeV, explicitly excluding medical accelerators and portable devices like sealed neutron tubes.

What are the dose limits for occupational workers under this standard?

The annual dose equivalent limit for occupational workers is 50mSv (5rem) for the whole body, while the limit for the public is 5mSv (0.5rem). Pregnant women and minors under 18 have stricter limits.

Does the standard address non-radiation hazards?

Yes, it includes supplementary guidelines on microwave radiation, ozone concentration limits, and general safety regarding flammable, explosive, and toxic substances.

The summary above provides a high-level overview of GB 5172-1985. 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 5172-1985 today to access all detailed parameters, tables, and testing procedures.

Indicaciones de aplicabilidad

Tipo: Seguridad
CCS: F70
ICS: 13.280
Organismo competente: Ministry of Ecology and Environment
Comité técnico: Ministry of Ecology and Environment

Relaciones

Sustituida por:GB 5172-2025 (Próxima)