An inactive gas introducing facility for a storage rack is provided in which supply of inactive gas to a container is stopped if an open state of an inspection door is detected while in a normal stop state in which a stop nullifying command is not issued and in which the supply of the inactive gas based on the immediately preceding supply pattern is continued and any changes, through manual operation, to a parameter that defines the immediately preceding supply pattern are prohibited, if an open state of an inspection door is detected while in a stop nullifying state in which the stop nullifying command is issued.