Top and Bottom Unheading Devices

[Freddy Martinez]

I’d like to get a perspective on reliability strategies around Top and Bottom Unheading Devices, specifically Delta Valves. What strategies are employed to ensure long term reliability of the valves (tasks, inspection, overhauls, etc) and at what intervals?

[Claus Graf]

Hi

Two things to keep your Delta Valves working properly: steam supply & hydraulic fluid cleanliness.

Monitoring your steam supply to the bonnets will provide indication of the gate and seats condition.

The hydraulic fluid and the HPU require filter changes (typ.) every four to six months.

The valves can be serviced at the turnaround replacing the seats and gates.
Regards

CG

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