The reactor vessel is surrounded by a thick steel-and-concrete primary containment vessel, equipped with a water reservoir designed to suppress overheating of the vessel.

反应堆由一个钢与混凝土构成的厚实外壳（第一层安全壳）保护着，另外还配有一个蓄水库，防止反应堆过热。

To compare the results, numerical simulation of a monobloc thick-walled explosion containment vessel was also investigated.

作为比较，对相同尺寸的单层圆柱爆炸容器也作了相应的模拟。

To compare the results , numerical simulation of a monobloc thick - walled explosion containment vessel was also investigated.

作为比较, 对相同尺寸的单层圆柱爆炸容器也作了相应的模拟.

If the heat from a meltdown ruptures the containment vessel, that could permit a major release of radiation with serious health consequences.

如果溶化时产生的热量使安全罩出现破裂，可能会导致一次严重危害人体健康的重大辐射。