Patent ID: 9453610
Filing Date: 2016-09-27
CPC Classification: F17C

Claim Text:
1. An inactive gas introducing facility comprising: a storage rack including a storage section for storing a container for storing a substrate, the storage rack being installed in storage space which is closed off from exterior space; an introducing portion configured to act on the container which is capable of discharging gas inside the container into the storage space through a gas discharge opening when stored in the storage section, and configured to introduce inactive gas into an interior of the container through a gas feed opening of the container; an introducing controller for controlling supply of the inactive gas to the container by controlling an operation of the introducing portion based on a supply pattern defined by a predetermined parameter; an inspection door open-and-close detector for detecting whether an inspection door for allowing a worker to go in, and out of, the storage space is in an open state or a closed state; a manually-operated stop nullifying command portion for issuing a stop nullifying command, wherein the introducing controller is configured: an oxygen concentration detection sensor for detecting oxygen concentration within the storage space, and wherein the introducing controller is configured to stop the supply of the inactive gas to the container by stopping the supply control of the inactive gas based on the immediately preceding supply pattern, if the oxygen concentration detected by the oxygen concentration detection sensor becomes less than a preset value defined in advance when the introducing controller is continuing with the supply of the inactive gas based on the immediately preceding supply pattern in the stop nullifying state.