| 摘要 |
<p>A containment enclosure (1) for a cryogenic unit (2) has a chamber (7) in which the cryogenic unit (2) is located. A chamber wall (4, 5, 6) includes thermally insulating bricks (10, 11) for thermally insulating the cryogenic unit (2) in the chamber (7). The chamber wall (4, 5, 6) is impermeable to liquid leaking from the cryogenic unit (2). A sump (30) is provided for receiving any liquid leaking from the cryogenic unit (2). Withdrawing means (31) are provided for withdrawing liquid from the sump (30) through an open uppermost end of the sump (30).</p> |
