GB14586-1993

Technical regulations for the environmental management of decommissioning of uranium mining and milling facilities

铀矿冶设施退役环境管理技术规定

GB 14586-1993 — действующий обязательный национальный стандарт Китая: Technical regulations for the environmental management of decommissioning of uranium mining and milling facilities. Отрасль: Строительство. Тема: Охрана окружающей среды. Дата вступления в силу: 1 апр. 1994 г..

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Обзор требований

Этот обзор пока доступен только на английском языке.

Область применения

This standard applies to the environmental management of all decommissioned uranium mining and milling facilities, including mines, mills, tailings ponds, and in-situ leaching sites. It also serves as a reference for non-uranium facilities if their radioactive material content exceeds relevant regulatory limits. Engineers managing nuclear site closures must verify if their facility's scale triggers these specific requirements.

Технические требования

The standard outlines the procedural framework for decommissioning, requiring a formal application, an environmental impact assessment, and a remediation design. It mandates that the entire decommissioning process generally be completed within three years. Key technical requirements focus on the stabilization and isolation of residual radioactive materials. For contaminated equipment, decontamination is required until non-fixed alpha and beta surface radioactivity meets specific regulatory thresholds. For underground mines and open-pit mines, the standard requires permanent sealing of shafts, slope stabilization to prevent landslides, and measures to control radon exhalation and contaminated water. The standard also specifies strict stabilization protocols for tailings ponds and waste rock dumps, requiring the construction of retaining dams, flood control trenches, and adequate soil coverage to prevent erosion and radon release. Long-term stewardship and monitoring must be transferred to local authorities after final acceptance.

Методы испытаний

Testing and monitoring procedures must be conducted in accordance with EJ 432 (Regulations for radiation environmental monitoring of uranium mining and milling). The primary testing focus is on verifying surface alpha and beta radioactivity levels, measuring average radon exhalation rates, and monitoring gamma radiation levels. Environmental monitoring also targets groundwater and surface water contamination pathways to ensure compliance with public dose limits referenced from GB 8703.

Частые вопросы

What facilities are regulated under GB 14586-1993?

It applies to all decommissioned uranium mining and milling facilities, including mines, mills, tailings ponds, and in-situ leaching sites. It also serves as a reference for non-uranium facilities if their radioactive material content exceeds relevant regulatory limits.

What is the general decommissioning procedure outlined in GB 14586-1993?

The standard mandates a comprehensive procedure including decommissioning application, environmental impact assessment, remediation design and implementation, project completion acceptance, and long-term stewardship of the site.

Does GB 14586-1993 reference international standards?

The environmental management limits for radon exhalation rates and Radium-226 specific activity are partially referenced from the IAEA Safety Series No. 85, adapted for Chinese regulatory requirements.

The summary above provides a high-level overview of GB 14586-1993. To ensure complete compliance for your projects entering the Chinese market, a precise and professional translation of the full technical specifications is essential. Purchase our high-quality English translation of GB 14586-1993 today to access all detailed parameters, tables, and testing procedures.

Подсказки по применимости

Тип: Управление
CCS: Z05
ICS: 27.120.30
Компетентное ведомство: Ministry of Ecology and Environment
Технический комитет: Ministry of Ecology and Environment