GB23726-2009

Regulation for radiation environmental monitoring in uranium mine and mill

铀矿冶辐射环境监测规定

GB 23726-2009 é uma norma nacional chinesa obrigatória vigente: Regulation for radiation environmental monitoring in uranium mine and mill. Setor: Médico. Foco: Segurança de produtos. Entrada em vigor: 1 de fev. de 2010.

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 radiation environmental monitoring at uranium mines and uranium milling facilities in China. It covers environmental monitoring, effluent monitoring, sample collection, measurement methods, data processing, and quality assurance. Facilities processing associated radioactive minerals may also refer to this standard. This standard is mandatory for all uranium mining and milling operations in China. It references key standards including GB 12379, HJ/T 61, and GB 14586 for related environmental management requirements.

Requisitos técnicos

The standard specifies comprehensive monitoring requirements across four types: baseline surveys, routine environmental monitoring, emergency monitoring, and decommissioning monitoring. Monitoring covers multiple environmental media including air, aerosols, terrestrial gamma radiation, surface water, groundwater, soil, bottom sediment, and terrestrial/aquatic biota. Facilities must establish optimized monitoring plans tailored to their engineering characteristics and environmental features. For effluent monitoring, the standard requires tracking of gaseous emissions (including ²²²Rn and its progeny, natural uranium in aerosols) and liquid effluents (including ²²⁶Ra, ²¹⁰Po, ²¹⁰Pb, pH, and selected heavy metals). Monitoring frequency ranges from monthly for wastewater to quarterly or semi-annual for other media. Batch discharge monitoring is required for specific process streams such as adsorption tailings and precipitation mother liquor. The standard defines monitoring zones: 5 km radius for baseline and routine monitoring, 3 km radius for decommissioning monitoring, and the full accident impact area for emergency monitoring. Sampling point selection must account for meteorological conditions, hydrogeology, and population distribution. The standard also mandates quality assurance programs covering personnel qualification, instrument calibration, and inter-laboratory comparison.

Métodos de ensaio

The standard references established national measurement methods for key radionuclides and parameters. Gamma radiation air absorbed dose rate is measured per GB/T 14583. ²²²Rn and progeny in air are measured per GB/T 14582. Natural uranium in water, soil, biological samples, and air is determined using solid fluorometry or laser fluorescence methods (GB/T 6768, GB/T 11220.2, GB/T 11223.1, GB/T 12377). ²²⁶Ra in water is analyzed via barium sulfate co-precipitation emanation scintillation per GB/T 11214. ²¹⁰Po in water is measured by electroplating per GB/T 12376. Radon exhalation rate from solid surfaces is determined by accumulation method per EJ/T 979. Surface alpha/beta contamination is assessed per GB/T 14056.

Perguntas frequentes

What products or facilities are regulated under GB 23726-2009?

GB 23726-2009 applies to uranium mines and uranium milling facilities in China. It covers all radiation environmental monitoring activities at these sites, including routine operations, baseline surveys, emergency response, and decommissioning. Facilities processing associated radioactive minerals may also refer to this standard.

Is GB 23726-2009 a mandatory standard?

Yes. All technical content in GB 23726-2009 is mandatory. The standard was jointly issued by the Ministry of Environmental Protection and the General Administration of Quality Supervision, Inspection and Quarantine. Uranium mining and milling enterprises must comply with its monitoring requirements.

What is the monitoring range specified by GB 23726-2009?

The standard specifies a 5 km radius from the facility boundary for baseline surveys and routine environmental monitoring, a 3 km radius for decommissioning monitoring, and the full accident impact area for emergency monitoring. Monitoring points must be strategically placed based on wind direction, hydrogeology, and population distribution.

The summary above provides a high-level overview of GB 23726-2009. To ensure complete compliance for your uranium mining or milling operations in the Chinese market, a precise and professional translation of the full technical specifications is essential. Purchase our high-quality English translation of GB 23726-2009 today to access all detailed monitoring parameters, sampling tables, measurement procedures, and reporting formats.

Indicações de aplicabilidade

Tipo: Proteção ambiental
CCS: F74
ICS: 13.280
Órgão competente: Ministry of Ecology and Environment
Comitê técnico: Ministry of Ecology and Environment