FIELD: handling spent nuclear fuel.
SUBSTANCE: proposed method includes disposition of spent fuel assembly in box and its exposure to dry heated inert gas environment. Drying process takes several cycles each time holding box space with fuel assembly under vacuum. Then box is filled with dry heated inert gas blown down for drying through adsorbers made in the form of shell-and-tube heat exchangers with sorbent-carrying tubes. Adsorbers are regenerated. In the process steam is blown through adsorber space and upon termination of desorption cooling water is passed through this space. Tube space of adsorbers is connected to vacuum line isolated from that of case. Upon sorbent cooling tube space is blown down with dry inert gas supplied from adsorbers drying out fuel assemblies while case space is held under vacuum.
EFFECT: reduced drying time, enhanced drying quality and safety.
2 cl, 1 dwg
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