METHOD OF INSPECTION FOR ERRONEOUS ASSEMBLY OF FUEL CELL STACKS

The invention provides a method of inspection for erroneous assembly of a fuel cell stack which allows for determination of whether the fuel cell stack has been properly assembled without depending on the appearance of the fuel cell stack. The erroneous assembly inspection method inspects for erroneous assembly of a fuel cell stack that is produced by stacking power generation cells and dummy cells in proper power generation positions and proper dummy positions. The erroneous assembly inspection method measures a pressure difference in anode gas passages and cathode gas passages when gas is supplied at different pressures respectively to an anode gas inlet and a cathode gas inlet of the workpiece to determine whether or not the workpiece is in a third erroneous assembly state including a first abnormal cell in which a dummy MEA and a power generation separator are assembled.