Implementation of Failure Modes and Effect Analysis on the Electro-Hydraulic Servo Valve for Steam Turbine

摘要

This paper presents the implementation of a structural problem solving technique of Failure Modes and Effect Analysis to analyze and improve the reliability and performance of the electro-hydraulic servo valve for steam turbine with minimum defects. Even a minor error in the system may results in default automatic fire control produced by an ideal hydraulic servomechanisms with electronics signal processing. It leads to the increase in MTTR (Mean Time to Recover) or decrease the MTBF (Mean Time Between Fault). The Failure Mode and Effect analysis is a method to the planning quality tool to identify failure which may affect the process and prioritize the risk on system, product or service. It is used to control and prevent process errors. Hence, the various possible causes of failure and their effects on the electro-hydraulic servo valve for steam turbine has been used in along with ways of prevention are discussed in the work.