You mean there's no such thing as buying one of that tanks and operating it by ourselves?
Yes, you can buy one fully outfitted and ready to go. It can be new or used. Shipping from the US or Europe is a possibility, and if you'd like some sources from the US, I can give them to you, but there must be much closer sources to you. The problem is I'm not familiar with what may be in Iran, and don't know what sources for industrial gas equipment your country may have. These tanks are often found in large hospitals, so you may try and contact a few hospitals there, or some other industry near you that has a tank and get some information from them.
On the other hand, the companies I listed above may also be able to sell you one and they all have an international presence. I suspect each of those companies has set up an organization somewhere inside Iran, though I'm not certain about that. I'd try locating a branch office from each of those companies and call them to see if they might sell you one.
Anyway, purchasing a tank is certainly an option. The main issue with owning the tank is repair and maintenance. If the tank needs to be repaired you're stuck with it. A vacuum repair such as a line that's leaking into the interior requires disassembly of the tank which can only be done at a very speciallized shop. There are also o-rings on the tank that can leak and you'll loose vacuum, so if you replace those o-rings you'll need to know how to backfill the annulus with an inert gas, and be able to pull a vacuum on the tank. If you lease the tank, that will be the responsibility of your supplier.
There are some benefits to owning your tank though. You can shop around for product more easily and contracts for product can be more easily negotiated and better terms made. And of course, after so many years, the cost of the lease may exceed the cost of the tank, so in the long run (ie: about 5 to 10 years) owning the tank will pay for itself.
The only problem I see may be the pressure. If the pressure is much above 10 bar, you may have to:
- blow the tank down to 10 bar to fill it
- find a supplier with a high pressure trailer pump
- install a pump to offload the trailer.
Plus, as part of the lease, you can work in a product delivery schedule to ensure you are never empty.
This is actually a very good point! At least in the US and Europe, all of these installations have something called "telemetry" on them which reads the liquid level in the tank and calls into the supplier through a phone line to tell them when to fill the tank. The entire filling system then is automated, and the chances of running out are almost eliminated. The telemetry can also monitor other things if you have additional equipment, and dispatch a maintenance person when the system goes down without having to call and let them know.
