这一个是很熟悉的，增压安全阀的疏忽打开，或者是在压水式反应堆的减压阀，或者是在沸水式反应堆的安全阀。
This one is the familiar one, inadvertent opening of a pressurised safety or relief valve in a PWR or a safety valve in a BWR.
如果装上两个减压阀，就不需要安全阀。
No relief valve is required where two pressure reducing valves are installed.
压力控制阀有减压阀、安全阀和顺序阀三种。
Pressure control valve with pressure reducing valve, safety valve and the sequence of three kinds of valves.
手轮、手柄和扳手传动以及安全阀、减压阀、疏水阀省略本代号。
The engineer opened the safety valve to allow the steam to escape and so reduce the pressure.
但注意本安全阀不能作减压阀长期工作，需要时可在管路上另行安装。
But the relief valve cannot be long-term work, when need can be installed in the pipeline separately.
减压阀都装有安全阀。
但注意本安全阀不能作减压阀的长期工作，需要时可在管路上另行安装。
But note that this cannot be a long-term work pressure reducing valve, relief valve can be installed in the piping shall be separately when necessary.
但注意本安全阀不能作减压阀的长期工作，需要时可在管路上另行安装。
But note that the safety valve pressure relief valve can not be long-term work, when necessary, be installed in the pipeline.
但注意本安全阀不能作减压阀的长期工作，需要时可在管路上另行安装。
But note that the safety valve pressure relief valve can not be long-term work, when necessary, be installed in the pipeline.
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