油库安全距离有两个不同的概念，一个是防火安全距离；另一个是防护安全距离。

There are two different concepts for safe clearance in tank farm:fire safe clearance, and protective safe clearance.

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对于带有掩体的油罐，其防护安全距离的确定应根据允许破坏等级、爆炸位置以及有掩体的两油罐间防护安全距离的计算来确定。

The protective safe clearance for a hidden tank shall be determined in accordance with the level of allowable destruction, location of explosion, and the safe clearance between two hidden tanks.

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文章着重探讨了燃气管道与地铁的安全距离、地铁杂散电流的危害和防护。

The article discusses on the safe distance between gas pipeline and metro rail, the hazards of metro stray current and protection measures.

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