一种放射性物品公路运输系统力学安全性研究

王晓鹏; 张煜航; 庄大杰; 朱坤; 李国强

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一种放射性物品公路运输系统力学安全性研究
王晓鹏¹,张煜航²,庄大杰²,朱坤¹,李国强²
1.中核四0四有限公司第四分公司，甘肃嘉峪关 735100;2.中国辐射防护研究院核应急与核安全研究所，太原 030024

摘要:

目的根据所装载的内容物特点以及现有成熟的运输固定方式，进行放射性物品运输容器和配套栓系系统的设计，形成具有良好运输匹配性和操作便捷性的核燃料运输系统，为放射性物品安全运输提供参考。方法采用试验和仿真计算相结合的方法，其中针对放射性物品运输容器开展贯穿、自由下落、穿刺等验证性试验，针对栓系系统设计开展有限元仿真计算，以验证栓系结构强度。结果试验结果表明运输容器具有良好的力学安全性能，能够保证在经历正常运输条件和运输事故条件后对内容物的包容性。在规定的加速度载荷下，栓系系统的最大应力均小于材料的屈服强度，能够满足公路运输对栓系系统的强度要求。结论设计的放射性物品运输容器和配套栓系经过安全分析后，组成的公路运输系统能够满足放射性物品公路运输的安全需求。

关键词: 运输系统运输容器放射性物品栓系

DOI：10.19554/j.cnki.1001-3563.2023.13.032

分类号:TL931

基金项目:国家自然科学基金(12202414)

Mechanical Safety of Road Transport System for Radioactive Material

WANG Xiao-peng¹, ZHANG Yu-hang², ZHUANG Da-jie², ZHU Kun¹, LI Guo-qiang²

(1. No.4 Branch of China National Nuclear Industry Corporation 404, Gansu Jiayuguan 735100, China;2. Institute for Nuclear Emergency and Safety, China Institute for Radiation Protection, Taiyuan 030024, China)

Abstract:

The work aims to design the transport package and the supporting retention system for radioactive materials according to the characteristics of the loaded contents and the existing mature transport and fixing methods to form a nuclear fuel transport system with good transport matching and convenient operation and provide reference for the safe transport of radioactive materials. Experiment and simulation methods were used to carry out penetration test, free drop test and puncture test on radioactive material transport package. The finite element simulation calculation was carried out on the design of retention system to verify the strength of retention structure. The test results indicated that transport package had good mechanical safety performance and could guarantee the containment of interior radioactive material after normal transport and transport accident conditions. Under the specified acceleration load, the maximum stress of the retention system was less than the yield strength of the material, which could meet the strength requirements for road transport. After safety analysis, the road transport system composed of the designed radioactive material transport package and supporting retention can meet the safety requirement of road transport for radioactive materials.

Key words: transport system transport package radioactive material retention