Anonymous
The coke handling system in our DCU is sluice way system with dewater bin and sedimentation tank.
The accident happened when coke cutting operator just finished the vertical cutting(bore hole), a large amount of hot water(90 deg C) from bottom head suddenly poured down to the sluice way and one operator worked there was hurt.
This mean the drainage step is not complete. But it is difficult to know whether there remain some water in the coke drum.
The cutting water temperature is about 50 deg C.
We operate the coke drum pressure at 0.8 barg during water quench, is it too low?
We do not add MCB from RFCC unit.
We also have problem that drill stem became stuck in the coke bed sometime.