Grey Relational Clustering Analysis of LNG Plant Off-production Maintenance Project
In order to explore the rationality of maintenance plan for LNG Plant,merge and sort out the maintenance items,and guide the planning,supervision and inspection of maintenance work,the study has collected off-production maintenance records of domestic demonstration project of 5 million cubic meters/day in Hubei LNG Plant from 2015 to 2019.The grey relational clustering model is used for mathematical analysis of maintenance items.The research shows:First,the LNG Plant belongs to the process industry,which is composed of three stages in the production operation cycle,namely normal production,off-production maintenance,and resumption of production in the form of time axis.As the key link between the preceding and the following,the maintenance of off-production must be planned and dynamic program must be preset to ensure"stop and repair,and re-sume production at any time";Second,the grey relational clustering model can merge the existing 18 inspection project observation indexes into similar factors,comb and integrate them into 7 catego-ries,and simplify the complex system;Third,based on the grey relational clustering results of main-tenance work,the diagonalized off-production maintenance plan can be obtained through the prepa-ration of countermeasure fishbone diagram,which can comprehensively guide the control of mainte-nance work process and spot check on completion.
万方数据
维普
