Reflux Failure Case

Reflux failure case is the major case of all tower or column. Reflux failure can be caused by the following:
- Power failure lead to reflux pump off
- Pump failure
- Control valve failure ( fail closed or stuck closed)
- Operator error etc

Tube Rupture Case

Tube rupture may be occurred for shell and tube heat exchanger type. Based on my experience, some design philosophy using 2/3 rule, and some other using 10/13 rule for the criteria of requirement PSV for tube rupture. Which one is correct? Should we apply 2/3 or 10/13 rule?

Blowdown PSV

I can't sleep again, till this midnight , almost 00.00 PM (or AM ? ), I just confuse what to do. I think it will better for me to do something useful. But what ? I don't get any idea. Until finally, I remember this blog.
My blog save my brain :D.

Gas Blowby Case

Gas Blowby is the discharge of gas from a process component through a liquid outlet. It can be caused;
- Failure of a liquid level control system.
- Or in advertent opening of the control valve by pass.

Block Outlet Case

My friend, regarding the overpressure protection system design, one of important responsibility for process engineer is determining the cause of overpressure. In this posting, we will discuss whether a kind of case is possible occurred.