在油罐或其它安装设备不停产条件下进行修理或改造工作。
Making repairs or modifications on a tank, or other installation without shutting down operations.
液压安全阀安装在油罐顶部，与呼吸阀并列使用，在呼吸阀失灵时起安全作用。
Hydraulic safety valve series shall be installed on the top the center of the tank, in order to withstand the damage to the tanks caused by operating failure of breather valve.
由于新的储油罐被安装在停机坪的对面，我们就在运营的飞机跑道底下挖了一条地下通道。
Since the new tanks were installed on the opposite side of the field from the parking ramp, a horizontal micro-tunnel was drilled beneath the operating runway.
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