5.1 The primary objectives of work at low-level radioactive waste sites are the protection of personnel, prevention of the spread of contamination, minimization of additional wastes, protection of sample data quality, and the unconditional release of equipment used.
5.2 Preventing the contamination of equipment used at low-level radioactive waste sites and the decontamination of contaminated equipment are key aspects of achieving these goals.
5.3 This practice provides guidance in the planning of work to prevent contamination and when necessary, for the decontamination of equipment that has become contaminated. The benefits include:
5.3.1 Minimizing the spread of contamination within a site and preventing the spread outside of the work area.
5.3.2 Reducing the potential exposure of workers during the work and the subsequent decontamination of equipment.
5.3.3 Minimizing the amounts of additional wastes generated during the work, including liquid, or mixed wastes, including separation of the waste types, such as protective clothing, cleaning equipment, cleaning solutions, and protective wraps and drapes.
5.3.4 Improving the quality of sample data and reliability.
5.3.5 Selecting equipment based on total life-cycle costs counting labor, waste, containment, disposal, treatment, and additional analytical costs, such as using dedicated or disposable equipment rather than decontaminating between uses.
5.4 This practice may not be applicable to all low-level radioactive waste sites, such as sites containing low-level radioactive wastes mixed with chemical or reactive wastes. Field personnel, with assistance from trained radiological control professionals, should have the flexibility to modify the decontamination procedures with due consideration for the sampling objectives, or if past experience supports alternative procedures for contamination protection or decontamination.
5.5 This practice does not address the monitoring, protection, or decontamination of personnel working with low-level radioactive wastes.
5.6 This practice does not address regulatory requirements that may control or restrict work, the need for permits or regulatory approvals, or the accumulation, handling, or disposal of generated wastes.
5.7 This practice does not set the release levels for equipment that has been decontaminated. Release levels are to be determined in advance in the QA/QC planning process. Guidance for release limits can be found in the reference documents.
5.8 This practice does not address the regulatory requirements for the handling, labeling, shipping, or storage of wastes or samples.
4.2.7 操作放射性物质的工作人员应正确穿戴好所需的个人防护用品。不允许用裸露的手直接接触放射性物质或进行污染物件操作。4.2.8 放射性操作之后应对工作台、设备、地面及个人防护用品等进行表面污染检查、清洗、去污。工作人员应进行淋浴。4.2.9 严禁在放射性工作场所进食、饮水、吸烟和存放食物。4.2.10 表面放射性物质污染控制水平按GB8703辐射防护规定的第3.1.4条执行。...
GB Z2工作场所有害因素职业接触限值 GB 3095环境空气质量标准 GB 3838地表水环境质量标准 GB 4915水泥工业大气污染物排放标准 GB 5750生活饮用水卫生标准检验方法 GB 5085.3危险废物鉴别标准浸出毒性鉴别 GB 6566建筑材料放射性核素限量 GB 6682分析实验室用水规格和实验方法 GB 8978污水综合排放标准 GB 9078工业炉窑大气污染物排放标准...
“放射性三废”的处理放射性药品使用后残留和剩下部分被称为放射性废物。放射性废物有固体、液体和气体三种,故称“放射性三废”。“放射性三废”处理不当会造成周围环境的放射性污染,影响工作人员和周围居民的健康。因而妥善处理“放射性三废”是十分重要的。(1)固体废物的处理主要采用放置法。被放射性药物污染的固体物质应存在固定的指定地点并采用适当的屏蔽物加以防护,待其自然衰变后,当做非放射性废物处理即可。...
12危险废物的包装物属于危险废物吗含有或直接沾染危险废物的废弃包装物、容器、清洗杂物属于危险废物在收集、贮存、运输、处置危险废物过程中所使用的装载、盛放、堆置、输送、容纳或包装过危险废物的场所、设施、设备和容器、包装物、装置、运输工具或其他物品,因直接与危险废物接触,受到了危险废物的污染,成为具有危险性质的污染物。 ...
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