STORAGE TANK-HORIZONTAL 1

[Jay_]

Dear Members.
I'm designing a storage tank to store diesel. Dimensions to be ID 3600mm with a length of 15000mm.
Location to be above ground and has flanged flat dish.
Is there any other code than UL 142 to design it with. UL 142 seems too conservative.

Detailing is a hobby,

 

[MJCronin]

Over the past 25 years, as a consulting engineer, I have specified many diesel/fuel abovegound and underground oil storage tanks.

Such tanks can be completely described on a single datasheet. There are many options offered by many, many vendors. UL-142 tanks are very very common and are very price competitive. Many options are available, including various coatings, saddles and skids, secondary containments, ladders, multi-compartments, nozzles, manways and attached pumping units

Please explain why you must design your very own UL-142 tank. ????

Why not purchase a standard 50,000 gallon unit such as one shown here:

https://www.highlandtank.com/app/data/literature/G_LIT_Aboveground-Horizontal-Tanks.pdf

Why do you not want a tank that is designed, tested and certified to UL-142... and made by an experienced vendor ?

https://www.modweldco.com/products/aboveground-tanks/ul-142-tanks

https://www.highlandtank.com/aboveground-horizontal-ul-142/

There are thousands of tanks in diesel storage service around the world.... They are as common as 60W light bulbs

Also, since this is the first tank you have ever worked with, please explain why, in your opinion, UL-142 is "too conservative"

Good information here:

https://www.wpowerproducts.com/news/storage-tank-standards/

MJCronin
Sr. Process Engineer

 

[JStephen]

Generally, UL-142 seems less conservative than the other codes, for what that is worth.
I think API-620 can be used for horizontal tanks, but it doesn't really give any design guidance, either. ASME could be used as well.
The major task for a horizontal tank is the design of saddles, which is the same as for pressure vessels. The main issue being that you wind up with a much thinner shell to work with, which makes the saddle design that much more challenging.

 

[MJCronin]

I agree with JStephen !!!

UL142, IMHO is significantly less conservative than API_650 and 620, which are the only other codes commonly used for this above-ground service.

ASME-VIII is far, far far more complex and conservative ... ASME VIII tank saddles are considerably more robust and expensive than UL142 saddles.

Furthermore, I do not believe that API-620 or ASME VIII would effectively allow flat heads at the diameter that you have specified.

Again, Why are you doing this ???

MJCronin
Sr. Process Engineer

 

[Jay_]

I do appreciate both of your responses.
It is not the first time I design a storage tank.
Main reason is the saddles design yes, that's where I was stumbled upon how thick the saddles must be, in comparison with EN 12285-2.
We can't ship a this kind of tank from abroad to our country, it's just far more complicated than just fabricating it locally.
I wouldn't use ASME VIII for design for sure, it is the first time I work with a UL design.


Detailing is a hobby,