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Development of a methodology for assessing radiological dose due to use of NORM sludge as fertilizer
Science of the Total Environment ( IF 8.2 ) Pub Date : 2023-12-02 , DOI: 10.1016/j.scitotenv.2023.168934
Gennaro Venoso 1 , Cristina Nuccetelli 1 , Christian Di Carlo 1 , Flavio Trotti 2 , Raffaella Ugolini 2 , Rosabianca Trevisi 3 , Federica Leonardi 3 , Laura Urso 4
Affiliation  

In Europe, the general obligation to recycle drives for increased reuse of residues containing Naturally Occurring Radioactive Material (NORM). In agriculture, this has led to the reuse of sludge produced by groundwater filtration facilities as a means of fertilization. In the frame of the RadoNorm project, a methodology was developed for dose assessment of agricultural workers and other members of the public living near agricultural fields in which NORM-containing sludge is applied. Appropriate exposure scenarios were identified and modelled for each relevant NORM decay segment of both U-238 and Th-232 series, as well as for K-40. Dose assessments were performed using the software RESRAD-ONSITE with dose coefficients for external and internal exposure taken from the latest publications from the International Commission on Radiological Protection (ICRP). The objective was to develop a generic methodology to quantify exposure and to obtain screening values – so-called Operational Levels (OLs). These OLs pertain to the activity concentration of natural radionuclides (in terms of kBq kg−1) present in sludge that is reused in agriculture, for which dose criterion of 1 mSv year−1 is complied with. OLs can be used as screening tools by an authority/operator, even non-experts in the field of radiation protection.

中文翻译:


开发评估使用 NORM 污泥作为肥料造成的放射剂量的方法



在欧洲,回收的一般义务推动了含有天然放射性物质 (NORM) 的残留物的增加再利用。在农业中,这导致地下水过滤设施产生的污泥被重新利用作为施肥手段。在 RadoNorm 项目的框架内,开发了一种方法,用于对施用含 NORM 污泥的农田附近的农业工人和其他公众进行剂量评估。为 U-238 和 Th-232 系列以及 K-40 的每个相关 NORM 衰变部分确定了适当的暴露场景并建模。使用 RESRAD-ONSITE 软件进行剂量评估,外部和内部照射的剂量系数取自国际放射防护委员会 (ICRP) 的最新出版物。目标是开发一种通用方法来量化暴露并获得筛查值——所谓的操作水平(OL)。这些 OL 涉及农业再利用污泥中天然放射性核素的活度浓度(以 kBq kg−1 表示),符合 1 mSvyear−1 的剂量标准。权威机构/操作人员甚至非辐射防护领域的专家都可以将 OL 用作筛查工具。
更新日期:2023-12-02
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