Application of fault tree analysis in innovation to electrical system of SL-IE radiotherapy simulator / 医疗卫生装备

ABSTRACT

Objective To discuss the practicability of application of fault tree analysis in innovation to electrical system of SL-IE radiotherapy simulator.Methods The structure and principle of the electrical system were analyzed,the fault tree for the electrical system was built,and the qualitative analysis and quantitative analysis to the fault tree were made.The electrical system was innovated with effective redundant method,and the qualitative analysis and quantitative analysis were made after innovation.Theoretical analysis and the actual validation were made for the fault tree of electrical system after innovation.Finally,several notes were provided for the innovation to the similar medical equipments.Results The fault tree analysis method was applied to innovating the electrical system,and theoretical analysis indicated that the failure probability to total system reduced obviously.Actually,the actual effect after innovation also validated the correctness of the theoretical analysis.Conclusion Application of fault tree analysis in innovation to electrical system of SL-IE radiotherapy simulator is practical.But,the selection to the innovation event,the change to maintainence after innovation and the event to innovate carefully should be paid attention to.