Full water condition fault in the steam drum of a catalytic cracking unit
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The phenomena observed in the accident were as follows: 1. The drum water level indication was higher than the normal level, and a high water level alarm was triggered by the DCS. 2. The water level indicated by the local water gauge is high. 3. The temperature of the superheated steam drops. 4. The water supply flow rate is abnormally high, exceeding the steam flow rate. (Contrary to the case when the heat transfer tube or exchange tube ruptures) 5. In the event of severe water filling, water hammer occurs in the steam pipeline, and steam emerges from the flanges. Let’s discuss what the causes of such accidents are.
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