Research On Maintenance Policy Of Gas Turbine In Company C Based On RCM

With the national industrial upgrading and equipments' large-scale,automation,intelligence and integration,the offshore oil industry's production process and equipments' system are more and more complex,and the requirements for safety and reliability are higher.Gas turbine is the main power generation equipment for offshore oil and gas production platform.Its operational reliability determines the stability of power supply and is related to the normal production of oil and gas fields.It is the most critical equipment in oil and gas fields.The PL oilfield group under the jurisdiction of Company C is located in Bohai,China.It is the China's largest integrated offshore oil and gas oilfield.After the transfer of operation rights,key equipments such as gas turbines have experienced various problems in maintenance and management,resulting inequipment accidents and big production losses.Reliability-centered maintenance(RCM)is an effective theory and method to improve system reliability.This thesis first reviews the equipment maintenance concept,development and RCM theory and methods.Reliability and RCM concept,analysis process,and FMECA(failure mode effect and criticality analysis)method are also illustrated.Then,the basic situation and maintenance concept of company C are introduced.The FMECA and maintenance policy selection methods applicable to company C are provided.Next,the specific application of RCM in the main gas path and auxiliary system of gas turbine of company C is investigated in detail.Wherein,the influence and damage degree of the failure mode are analyzed in detail,and the corresponding maintenance policy selection schemes are proposed to improve the reliability and reduce the loss of production due to maintenance costs and unplanned shutdowns.Finally,the root cause analysis and improvement of the faults are further are carried out to get the corresponding rectification measures.The experience and applicable boundary of RCM in the application practice of company C gas turbine are summarized.Based on RCM,this thesis studies the maintenance policyof gas turbine of company C,and realizes the comprehensive coverage of equipment operation and maintenance stage management,which may provide a reference for other companies to better practice RCM.