Sentences with phrase «shield building roof»
Because the AP1000 design uses a chimney effect to draw air outside of the containment vessel upward (a design Westinghouse envisioned for cooling the containment and preventing rust using natural circulation), if radioactive air were to seep from the steel vessel, it would be ushered up into the outside air through the hole in the shield building roof.
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This involves clearing rubble, installing shields, dismantling the building roofs, and setting up platforms and special rooftop equipment to remove the rods.
The solution, Gundersen says, is to install filters in the hole of the shield building's roof to capture any vapors that could leak out of the containment vessel, if breached.