超导磁体的安全分析与检验建议

Safety Analysis and Test Advices of Superconductive Magnet

基于现行的国家和国际标准,讨论并指出了超导磁体特有的一些安全风险点,计算了现在广泛使用的超导磁共振成像系统的一些安全特征值,重点讨论了失超的风险和失超保护的方法和技术。由于现在在超导磁共振成像系统的注册检验过程中使用的国家标准和行业标准没有针对超导磁体本身的特点,文中进行一些建议性的探讨,希望能够促进未来标准的完善和提高。由于超导磁体需要使用大量的氦气,失超时会大量蒸发氦气,而且我国是一个氦气资源非常匮乏的国家,所以也就氦气的回收利用加以讨论。

Based on the current GB standard and IEC standard, some unique security risk points of the superconductive magnet were discussed and pointed, some security eigenvalue of widely used MRI were calculated, method and technology of the quench risk ＆ protection were focused. Currently during the type test of superconductive MRI, the national standards and industry standards have not included items focus on superconductive magnet particularly, so this paper gives some recommended discussing and hopes to improve and enhance the future standard. Because superconductive MRI uses a large number of helium gas which is very short in China and if quenching, helium will evaporate quickly, so the helium recycling are also discussed.