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О, нашел описание на официальном сайте:
Vacuum Building
This 71 m (240 ft.) high cylindrical concrete structure is connected to the reactor buildings by a pressure relief duct and is a unique safety feature of the CANDU system. The vacuum building is maintained at negative atmospheric pressure. Any release of radioactive steam from the pressurized systems would be sucked into the vacuum building, thus preventing its release outside the station.
Эх, засосет! :)
Vacuum Building
This 71 m (240 ft.) high cylindrical concrete structure is connected to the reactor buildings by a pressure relief duct and is a unique safety feature of the CANDU system. The vacuum building is maintained at negative atmospheric pressure. Any release of radioactive steam from the pressurized systems would be sucked into the vacuum building, thus preventing its release outside the station.
Эх, засосет! :)
