I'm certainly no vault expert either but have had a couple built from scratch back in the days when there were specific regulations. Didn't realize as one poster sugested that they had been abandoned.
Anyway,regulations or not you certainly want to protect the bank from loss as well as the embarassment of a simple hole in the wall from an adjoining suite cleaning out the vault.
You also want fire protection. Safe companies can most likely install a portable vault, if access is available to move it in, that will provide this type of protection. You can also erect some reinforced walls that are seperate from the dividing suite walls. Its a question of money and getting the most bang for the buck. IMO safety isn't cheap and remember there will be a lot more than cash in the vault to protect.
Your insurance company will have requirements to meet so you need to check with them as well. Find out what they are and start calling safe companies and see what is available.
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