The planned reactor would have a containment vessel, but it would be located in the same seismic area as the current Metsamor plant.

计划的反应堆将有安全壳，但它仍和现在的Metsamor核电站一样位于同一地震区。

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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。

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That in turn sits within a larger steel structure, the primary containment vessel.

上面的这些结构外面还有一个更大的钢结构主容器。

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In that accident, the lack of a containment vessel surrounding the reactor meant radioactive materials from the accident were spread far and wide.

WSJ: Japan to Take 40 Years to Dismantle Fukushima Nuclear Plant

Both the drywell and the wetwell are surrounded by a secondary containment vessel (or shield building) also built from reinforced concrete about a meter thick.

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In late March, Tepco said readings of airborne radiation inside the containment vessel at the No. 2 reactor had surged to a deadly 79 sieverts, the highest level since the crisis began March 11 last year.

WSJ: New Leak at Japan Reactor Threatens Ocean