长贮装备性能退化评估刍议

Aimed for performance assessment of long-term storage equipment (LTSE) due to degradation, main features of LTSE such as "performance degradation", "environment change suddenly", "one-shot", "mission critical", are summarized. The degradation equation (DE) and functional equation (FE) are presented to describe the essential behaviours. Chance probabilities of performance margin (PM) and health status margin (HSM) are introduced to measure the reliability and service ability of LTSE. The key elements associated with the performance degradation assessment, including health status assessment, functionality assessment, reliability assessment, are elaborated. The technical framework for performance degradation assessment of LTSE are proposed. Scientific and technical problems related to performance degradation assessment of LTSE are listed, and they are degradation behaviour mechanism in complex environments, operation condition characterization and simulation, reliability assessment under multiple uncertainties and small sample size. Through the discussion, the concepts and the technical needs for performance degradation assessment of long-term storage equipment are clarified systematically.