Anonymous
There has been any change (quality) in the feed unit? have you changed the way of cooling?
The type of formed coke (shot, sponge, needle) and their way of cooling can generate these hot spots that usually occur more during the pilot cut , high contents of asphaltenes can generate Shot coke and that due to poor cooling or a quick cut can generate these events
we had several events (geyser) and what we did was comply with the procedure that during the cutting we keep the spedd of 3 ft / min to give opportunity to cut water to help cool down, also we introduced a half-hour soaking during the quenching step (the last half hour) and in case of this event the operator rises faster the tool and leaves her there for a few minutes and continued to cut more slowly
Best Regards
Espaa2005