These articles on DCU Safety Awareness are written by people who work in the field. We can all learn from each other’s safe and unsafe experiences. Send in your story
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Are you starting up or commissioning a new grassroots delayed coker? The cost to design, purchase, and build that unit is likely to exceeded $1 Billion USD. How many people at your plant have actually operated at delayed coker? Not very many refineries have more than 1 delayed coker so unless you hired all experienced people from your […]... more
The Coker unit has a valve to send drum outlet to the blowdown system when the cooling step is working. It is a routine operation. This operation was done at 4 pm. At 7 pm the shift supervisor and operators changed shift. The authorization was done, but the inspection was not. At 8 pm maintenance […]... more
by Bruce Kerr, Fluor Daniel Introduction Why are refiners today installing safety interlocks and even fully automating the coke drum switch? Delayed Cokers are very manpower intensive units that require a great deal of operator attention. Through the years refiners, that have Delayed Cokers, have seen and/or have read many incident reports where operators have inadvertently […]... more
Maloperation of Velan switch valve due to shorting of slow release relay (component failure) in the remote panel circuit. While on routine operation of coke drum switching, operator had finished the vapour heating of drum but was yet to open the feed isolation valve to vapour heated drum. As soon as switch valve selector switch […]... more
Inventor: Tariq Malik Brief Summary of the Invention A coke and water containment system has been developed which provides operators of delayed coking units improved margins of safety in draining, unheading and decoking coke drums. This invention utilizes on an exemplified embodiment, concentric cylindrical shields to provide a mechanical shield to protect personnel on the […]... more
An operator was reviewing his furnace charge pumps on a routine walk around and noticed some unnatural coking around a weld on a case drain. There was an indication of a possible leak. The 3/4″ piping was removed from the case drain and found to be corroded to paper thin. Proper inspection and metallurgy in […]... more
Don Merrell I could have saved a life that day, But I chose to look the other way. It wasn’t that I didn’t care, I had the time, and I was there. But I didn’t want to seem a fool, Or argue over a safety rule. I knew he’d done the job before, If I […]... more
By C H Anand, Reliance Group of Industries, Jamnagar There was a near miss incident in our coker unit about a year back. One of our decoking water hoses had failed from its top rotary joint end and fell down on the cutting platform. There was no indication that it was about to rupture (that’s […]... more
By C H Anand, Reliance Group of Industries, Jamnagar In our delayed coker unit one evening, one of our operators noticed fumes from the drain connection of feed line in one of our coke drums. The drum was in its coking cycle. It was found that the leakage was partially coked up when insulation was […]... more
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