All of our bulk N2 systems are owned by the supplier and we pay per pound. If you have the same, ask them.

Good Luck,
Latexman

Do you have some specific questions?

I have an existing system with annual use rates from the gas supplier. I need to have this data reviewed and determine if this system can support additional loads at specific demand rates and how quickly these additional demands will deplete the existing supply.. Not looking for free information, time will be compensated. I am a contractor that specializes in process piping and equipment installations.
Additionally we have a Argon system requiring similar review..

Go to your supplier, they will tell you the max rate that your system is suitable for (limited by vaporizers and regulator) and if it can be up sized. A lot of this will depend on what your anticipated maximum and average usage rates are.
You will reach some limit where you need larger tanks. They would be more than willing to install larger ones for you if you really want to use more gas. All of the tanks/vaporizers/regulators belong to the bulk gas supplier.

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P.E. Metallurgy, consulting work welcomed