ABSTRACT
Maintenance is an essential activity in power plants, and it consumes a significant amount of money spent on power generation. Human error in maintenance has been found to be an important factor in the causation of power generation safety-related incidents [1]. A study of reliability problem-related events concerning electrical/ electronic components in nuclear power plants revealed that human errors made by maintenance personnel and technicians exceeded operator errors and that over threequarters of the errors took place during the testing and maintenance activity [1, 2]. Furthermore, according to Refs. [1, 3], errors made during testing and maintenance caused reactor core melt more easily than did errors during operation.
