We're designing a facility to store motor oil, a class IIIB liquid, in bulk tanks ranging from 2,000 to 10,000 gallons.
Looking at NFPA 30 para. 22.7.1.1.3, tanks with Class IIIB liquids require emergency venting if they are below 12,000 gallons.
We have calculated emergency venting air...
We have installed some aboveground jet fuel piping. It is 1.5" Schedule 40 304 stainless. For larger diameters we have always welded pipe but this time we decided to thread it. Now, all the joints are leaking, some worse than others.
Is there any reason not to be threading this pipe? Is...
Thanks for your help, guys. What we did was install a variable speed drive so the pump turns at the correct speed and we don't need the rate of flow control valve any more. This also lowers the back pressure on the pump significantly, down to about 30 psi. The cavitation problem has gone...
The pump has an internal bypass. It also had an external bypass, but the owner's engineer insisted we remove it. The pressure settings on the two relief valves were not close so the second bypass was not causing a problem. The water slug valve was doubling as a raft of flow control valve...
The air eliminator is a 30-gallon pressure vessel with two floats. One at mid-height opens the discharge valve when it gets submerged by fuel. Then second, near the top, closes the air vent at the top when it gets submerged.
We will have run up to 8000 gallons through the system when the...
Pumping Jet-A fuel from one storgae tank to another,
we have the following setup:
Tank ->
Floating Suction ->
Check valve ->
Strainer ->
Positive Displacement Pump ->
Air Eliminator (NEW) ->
Filter/Separator ->
Relaxation Chamber ->
Meter ->
Tank
Everything has been working fine, but the...
Yes, it should not be too hard using Excel. Our first
step will be to verify that it reproduces the graphical
curves we have been using.
Thanks, butelja. Your answer was everything I was
hoping for.
Dave
I am in need of equations describing the temperature dependence of viscosity of various motor oils, hydraulic oils, gear oils, and ATFs. Typically, product data sheets only give the viscosity at 40 C. There are graphs available that show an approximately log-linear dependence of viscosity with...
I am in need of equations describing the temperature dependence of viscosity of various motor oils, hydraulic oils, gear oils, and ATFs. Typically, product data sheets only give the viscosity at 40 C. There are graphs available that show an approximately log-linear dependence of viscosity with...
