Reliability Data Analysis of CT in the Early Stage of Use
Objective To analyze the reliability data of CT equipment in use,improve the theoretical framework of equipment reliability analysis and evaluation indicators,explore practical methods for equipment reliability evaluation,to provide practical reference solutions for performance comparison between different CT equipment.Methods Based on the data of the first two years of the newly commissioned CT equipment,the performance comparison framework was constructed according to the reliability theory.According to the maintenance records provided by the equipment manufacturer,the data related to the reliability,maintainability and supportability parameters in the work order of the first year,the second year and the first two years after the installation of a single CT equipment were statistically compared.And the maintenance time,fault time and maintenance interval of the first year and the second year after the installation were compared.Results The reliability parameters of the equipment in the first year,the second year,and the first two years after the installation showed excellent performance in the following order:the first year,the first two years,and second year.The maintenance time and fault time in the second year were longer than those in the first year,and the maintenance interval was shorter than that in the first year,but the difference was not statistically significant(P>0.05).The overall operation status of CT equipment was relatively stable in the first two years after installation,and decreased slightly in the second year.Conclusion The maintenance data analysis and evaluation system established in this study can provide reference information for improving equipment reliability,provide reference solutions for performance comparison between different CT equipment,which can promote the continuous progress of CT technology and industry standardization.
CTreliabilityavailabilityreachable availabilityinherent availabilitymean time between failure
国家科技期刊平台
NSTL
万方数据
