第二十一篇

Passage 21
It has been reported that one of our vessels suffered an accidental release of dry powder. This happened during a routine，three monthly test of the system. The third officer was checking the fixed dry powder extinguishing system and decided to check the content of the pilot bottle. This particular system has two valves，one on the bottle itself with the pressure gauge behind it and the other one isolating the pilot bottle from the system. In order to check the pressure，the officer changed the position of the isolating valve into position he thought closed (perpendicular to the pipeline) and opened the bottle valve. By doing that he activated the dry powder system and the entire 1800kgs of dry powder was discharged on deck through the dry powder manifold monitors.
A lesson to be learnt from the above incident - make sure that not only the isolation valve is close but also the pipe is disconnected to avoid accidental release of dry powder.
据报道，我们的一艘船遭受了意外释放干粉。这是发生在一次例行的，系统三个月测试的时候。三副检查固定干粉灭火系统，并决定检查引导瓶的容量。这个特别的系统有两个阀门，一个在它本身的瓶子上压力表在它后面，另一个是在这个系统的引导瓶上隔离的。为了检查压力，三副改变隔离阀的位置到他认为是关闭（垂直于管线）的位置，并打开瓶上的阀。由于这样做，他激活了干粉系统并通过干粉监视器是全部1800kgs干粉泄漏到了甲板上。
从上述事件得到一个教训 - 确保不仅隔离阀关闭，而且管路要断开，以避免意外释放干粉。