Using simulation for intervention design in radiating environment: first evaluation of NARVEOS
Using simulation for intervention design in radiating environment: first evaluation of NARVEOS
复制标题
利用仿真进行辐射环境干预设计：NARVEOS 的首次评估
DOI：
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发表时间：
2009
期刊：
影响因子：
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通讯作者：
P. Gravez
中科院分区：
文献类型：
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作者：
J. Thevenon;L. Lopez;C. Chabal;C. Mahe;Jean;L. Chodorge;P. Desbats;P. Gravez
辐射环境中的干预设计一方面要解决技术和经济上的限制，另一方面也要满足辐射防护的原则和规则。模拟是很好地理解场景和检验假设的关键点。本文介绍了一个基于虚拟现实技术和几何描述与求解器之间快速耦合的仿真工具（NARVEOS）如何为负责方案设计的工程师提供重要的支持。除了针对具体项目（如拆除操作）的可行性研究方案设计外，该工具还适用于常规操作（如维护和大修）的剂量预测降低。用于交互式和同时计算CAD模型内的剂量估计的技术。通过使用CAD模型和可用的放射学数据（源术语描述），该软件允许模拟数字模型的不同特征（虚拟人类工人、机器人、源、生物防护等）的演变。以及使用与终端用户的交互性来评估可访问性问题。借助该软件，用户可以虚拟地测试操作可行性，优化成本并根据ALARA原则估算剂量率。该工具为退役项目的研究、成本和期限管理以及项目团队、供应商和安全机构之间关于综合剂量优化的沟通提供了新的视角。NARVEOS的第一批结果将通过在几个核场址正在进行的退役项目中进行的几项应用报告。一些评估测试也提出和讨论。
Interventions design in radiating environment must bring answers to technical and economical constraints on one hand and, on the other hand, to radiation protection principles and rules. Simulation is a key point for a good understanding of the scene and for testing hypothesis. The paper presents how a simulation tool (called NARVEOS), based on Virtual Reality technology and on fast coupling between geometries descriptions and a solver, can provide si gnificant support to engineers in charge of scenario design. Besides feasibility study scenario design for specific projects such as dismantling operations, such a tool is well adapted also for dose projection reduction on regular operations such as mainte nance and outage. The technologies used to interactively and simultaneously compute the dose estimate within a CAD model are presented. By using CAD model and available radiological data (source term description), the software allows simulating the evolut ion of the different features of the digital mock-up (virtual human workers, robots, sources, biological protections, etc.) and evaluating the accessibility issues using interactivity with the end-user. Thanks to this software, users can virtually test the operation feasibility, optimize the costs and estimate the dose rate according to ALARA principle. This tool offers new perspectives for studies, costs and deadlines management of decommissioning projects, as well as for communication between project team s, providers and safety authority about integrated dose optimi zation. The first results of NARVEOS will be reported through several applications carried out within on - going decommissioning projects in several nuclear sites. Some evaluation tests are also presented and discussed.