I need all the help I can get here.
There is a sudden increase in water in our distillation operation. We checked for Cooling Water chemicals in the process (Cloride) for prossible ingress from the CW condenser but found none. This suggest that the water may be ingressed from the steam reboiler...
All,
I am putting in a RD to protect a PD pump. The RD is installed at the discharge line and routed back to the suction line. In case of overpressure, flow will be diverted back to the suction side. My question is, how to decontaminated this line for maintenance (case: RD does not burst but...
All,
I need you opinion on this one. I'm HAZOPing a PD pump set-up. For the pump block-in condition (discharge valve close), is it sufficient to depend on the pump's internal relief valve or must we install a PSV upstream of the discharge valve with its outlet being recirculated into the suction...
All,
In designing a piping system with variable pressure rating, what is the consideration when specifying the piping spec break? Must there be a valve at every spec break? Is there any code on this?
Thanks
One of the major concern for Turnaround scheduling is the late issuance of Work Permit. Someday, esp during the beginning of the Turnaround, some work can only begin after 10:00 in the AM (Normal shift started at 7:00 AM). One way suggested is to lengthen the validity of selected non critical...
Dear all,
I am having a shutdown maintenance. Just open a distillation column and found three trays are damaged. Due to the exotic material, we only have one tray for replacement. To order new will take months.
The total number of trays in the column is 50. If we run the column with two missing...
Dear all,
There are two types of steam flow control into a thermosyphon reboiler. One is by having the control valve at the steam inlet line and the other is controlling the exchanger condensate outlet flow.
Based on your experience, which one is more realiable and robust?
Appreciate any comments
Dear all,
Is there any step-by-step method for checking pump capacity?
I am looking into increasing a flow across a system. The volumetric flow is o.k with the pump but the density has increased. How do I translate this change into the pump curve?
Appreciate any ideas
Experiencing fouling at the tube side (Cooling Water) of a heat exchanger. The HX is of straight tubes with a longitudal baffle at the channel cover to allow for two passes design (TEMA type: BEP).
Cooling water enters thru the bottom nozzle of the channel cover, flow thru the tubes and return...
Experiencing fouling at the tube side (Cooling Water) of a heat exchanger. The HX is of straight tubes with a longitudal baffle at the channel cover to allow for two passes design (TEMA type: BEP).
Cooling water enters thru the bottom nozzle of the channel cover, flow thru the tubes and return...
Whenever there's hydrocarbon vapor release from our flare stack, the atomizing steam valve will be opened to ensure complete combustion therefore reduce black smoke formation. One persistent problem: with the steam discharge, come a defeaning noise (at 110 dBA monitored at grade level).
Happy to...
What is the best way to determine the vibration of tubes in a shell and tube exchanger. Is just monitoring vibration on the shell external wall gives a valid data? What is the normal vibration figure and the max allowable. If you guys have any experience in this, appreciate any sharing of ideas...
Having problem with absorption chiller which is delivering only 60% of the design load. Vendor recommends that we clean the Evaporation CW tubes. We opened up the tubes and guess what? It was as clean as new!. Second recommendation from vendor is to add a small amount of alcohol to improve the...
