Method for inspecting and repairing a PCB of atomic power plant facilities

摘要

The present invention is a method for precisely inspecting the electronic circuit board performing the essential functions of the power generation facilities to ensure the stability and reliability of the nuclear power plant, and to determine whether there is a failure, and repaired if it is determined that the failure or failure is high Repairing to a board with normal performance. The present invention provides a test preparation step for cleaning the substrate to be inspected and removing the insulation coating of the soldered portion; Appearance structure inspection step of inspecting the attachment state between the electronic component and the PCB board; A component inspection step of individually inspecting the performance of important components; A functional test step of checking whether an output signal is normally output by applying an operating voltage and an input signal to the electronic circuit board, and determining the pass failure by estimating the test result and the board design data and the remaining life of the part in the part checking step. A pass rejection determination step and an insulation coating step of insulating coating the soldered portion of the electronic circuit board passed through the above steps are included.;Nuclear power plant, electronic circuit board, board parts inspection, ICT inspection.