pressure vessel

[Jasmine2000]

I am trying to design a pressurized vessle for gasoline storage tank. This vessel will have relief valve. How can I calculate the pressure rise in the vessel with temperature rise? This vessel will have nitrogen blanketing? Gasoline is volatile I do nor think I can use ideal gas law. Please help.Thanks

 

[gr2vessels]

jasmine,
First of all, it is highly unusual to use pressure vessels for the storage of gasoline. It could get far to expensive to consider a pressure vessel. Normally the gasoline is stored in large volumes in storage tanks designed to API 650/620, not ASME BPVC. You could also consider the nitrogen blanketting, particularly for the in-breathing case, to prevent the ingrease of oxygen. The storage tank should be fitted with relief valves, including suitable vacuum breaker valves (breather valves) and design should be in accordance with API 2000. In many cases, the gasoline can be stored in tanks with floating roofs.
However, if you and your Client insist on storing gasoline in pressure vessels, the ASME VIII Div 1 and 2 can help you with your design. Be prepared of people giving you a funny look when you mention storing gasoline in a pressure vessel.
cheers,
gr2vessels

 

[Jasmine2000]

Why is unusual? Is that beacuse no one has done it yet?

 

[boredinref]

I agree with gr2vessels 100%. Gasoline storage should be done in a floating roof tank. I've never heard of a pressure vessel used for this purpose... In any case, I'd add to to ASTM section VIII consulting APIs 520 and 521. Follow the methodology and you'll be fine.

 

[mbeychok]

Jasmine2080:

It is unusual because it is much more expensive to use a pressure vessel than it is to use a fixed-roof or floating-roof tank.

Milton Beychok
(Visit me at www.air-dispersion.com)
.

 

[MJCronin]

to all...

I think we can all learn somthing from this particular post and the type of questions that seem to be posed by a virtual army of "process newbies"

This forum serves as a base mostly for those who are newly graduated and who do not have a clue...

IMHO, a careful reread of many of the process related questions reveals an infrastucture where there seem to be no experienced engineers in many organizations...just MBA managers and low-priced newbies...

It seems like a sad situation with some possible very dangerous implications

My opinion only..

-MJC

 

[boredinref]

MJC, I think you're right. I don't want to distract the main purpose of the post, but the reality is no one is properly training new engineers to be engineers. Everyone wants to be a manager and by next week…

Now, the other side of the coin. I honestly don’t feel like training anyone myself lately. You should see the attitude most of the new hires have in my company. I could tell you tens of stories, but this one stands out. I had to take a 3-month employee on a field trip, for training purposes, and she shouldn’t shut up in front of the customer. She would even challenge most of my statements, to the point I had to call the boss to get her pulled out of the job. After confronting her, she told me she read in a career development book that challenging his seniors was the way to get ahead… go figure… I don’t wanna sound old (I’m still in my 30s), but if I had done that to a senior engineer, I would’ve been shown the door… No anymore. That’s now call “being proactive.” Of course, I had no hope she’ll even learn to design anything, but I’m sure she’ll be my boss in a couple of years…

Sorry for the rant. I guess we should start a new thread just for this…