目的 设计开发TC-I型放射性材料运输容器，用以运输少量的放射性材料。方法 按照GB 11806—2004《放射性物质安全运输规程》中B(U)型货包的规定进行设计，设计的运输容器为三层嵌套结构，主要由3部分组成，即外容器、隔热减振材料、内容器，其中外容器与内容器材料为304不锈钢，隔热减振材料主要为云杉。结果 对设计的TC-I型容器进行了运输事故条件下的考核试验，包括水浸试验、力学试验、耐热试验等，试验前后的漏率测试结果表明，该容器性能满足GB 11806—2004对内容物漏失限制的要求。结论 成功设计了一种B(U)型放射性材料运输容器，在规定的运输事故条件下能保证放射性材料运输的安全。

The work aims to design and develop TC-I type transport cask to transport small quantities of radioactive materials. The transport cask was designed in accordance with the stipulation of B(U) type package described in GB 11806—2004 Regulations for the Safe Transport of Radioactive Materials. The transport cask had a nested structure of three layers with three main components: drum, heat-resistant and vibration-resistant materials and containment vessel. The material of drum and containment vessel was stainless steel 304, and the main component of heat-resistant and vibration-resistant materials was spruce. The TC-I type transport cask designed was assessed with transport accident condition tests, including water immersion test, mechanical test and heat resistance test. The leak test results before and after the test showed that, the performance of such cask met the requirements of content leakage limit in GB 11806—2004. A B(U) type transport cask for radioactive materials is successfully designed. The transport cask can guarantee the transportation safety of radioactive materials in the stipulated transport accidents.