Hi guys,
Quick question about tank bottom annular plates.
API 650 states (in section 5.5.1):
"When the bottom shell course is designed using the allowable stress for materials in Group IV, IVA, V, or VI, butt-welded annular bottom plates shall be used (see 5.1.5.6). When the bottom shell...
Thanks everyone!
I have performed the cslculations and they seem okay. However, I have on more concern.
NPSHa is calculated as follows:
NPSHa = Ha +/- Hs - Hvp - Hf
where:
Ha= pressure exterted on the fluid surface
Hs = Suction head, this is positive in my case because the liquid level is...
Hi everyone,
I am calculating the pipeline size for connecting a pump to a tank.
Currently, ther are already 2 pumps in parallel connected to that tank via 1 header.
Now a third pump is to be connected to that tank via a pipeline connected to the same main header (refer to the attached drawing...
Hi guys,
Thank you all for your responses.
I am already doing the NSPH calculations.
However, my main concern here is that when both pumps are on and "sucking" from one tank, is there a chance that one of the pumps will "starve"? Please keep in mind that one of the pumps is much further from...
Hi guys.
I have a situation I would appreciate some help on.
There are two gasoline storage tanks (Tank 1 and Tank 2), two pumps (Pump 1 and Pump 2). Currently, Tank 1 and Tank 2 are connected to Pump 1 through a 4 inch pipeline. For future operation purposes, an additional connection will be...
Hi guys,
I have aquestion regarding the spraying pressure of a water tank.
Suppose I have a storage tank for water with the following parameters:
Height: 10 m
Capacity: 651900 liters
There is a hole on the tank shell, almost at the bottom of the tank (assume that it is at the bottom) and the...
Hey guys,
I am studying a system which has a PRV at the discharge of a positive displacement pump.
The discharge of the PRV is sent back to the suction line of the pump.
The pump has no control whatsoever.
I was wondering, if the PRV relieves flow to the suction while the pump keeps receiving...
Thanks guys!
Indeed, when I mentioned to the supplier that the valve should be connected to the (Positive Displacement) pump outlet and that it shall be connected back to the pump's suction line, they recommended using a Hydraulic Bypass Relief Valve or a Constant‐Pressure Pump Governor...
Thank you all for the replies.
The PRV is meant to protect the piping of the system.
I have attached a PFD to illustrate the system.
I hope it is clear for further discussion.
Thank you in...
Hi all,
I am a Junior Mechanical Engineer and have no experience in PRV sizing, apart from all the research I have done during the last few days.
I am sizing a PRV for a PIG Launching System placed in the discharge line of Positive Displacement pump. The liquid is Crude Oil (16 deg API). I have...
