Patent attributes
A pressure vessel defines an opening with a shoulder around a periphery of the opening. A door is configured to regulate access to the opening. The door is configured to compress against the shoulder when in the closed position. A first seal is between the door and the shoulder. The first seal touches an interior side of the door and the shoulder when the door is in the closed position. The first seal is configured to seal fluid within the pressure vessel. A second, active seal surrounds a periphery of the opening. The seal is actuable between an engaged position and a disengaged position regardless of a position of the door. The second, active seal touches the periphery of the door, perpendicular to the first seal, when in the engaged position and the door is in the closed position. The second, active seal is configured to seal fluid within the pressure vessel.
