LEAK INSPECTION METHOD AND LEAK INSPECTION APPARATUS

A leak inspection method and a leak inspection apparatus for a fuel cell stack, in which a plurality of fuel cells are stacked, each having an electrode member and a pair of separators sandwiching the electrode member therebetween, and seal members provided on an outer peripheral portion of each of the separators, wherein a first leak inspection is performed by applying a fastening load which is a load applied to the fuel cell stack at a time of product shipment, and a second leak inspection is performed by applying to the fuel cell stack a second load which is lower than the fastening load.