Two things:
One,http://www.gamesas.com/index.php?/topic/1095939-devise-your-own-vault-experiment/page__st__180
Two.
Vault XX
The Experiment: To see how humans would cope without time.
Size: A normal sized vault with enough space for 3000 inhabitants.
Equipment: All normal fixtures, but no timekeeping devices, or light switches.
Organisation: All people entering the vault will place any diaries, watches or clocks that they have into an incinerator. Light's kept on at all times to confuse body clocks.
Length of experiment: Vault to be sealed for 300 years. However if the vault is opened one or more years before or after 300 years it will be filled with sarin gas.
Expected Outcome: Residents will do their damnedest to keep track of time but unless they etch markings into the wall every 24 hours when a 'day' passes for 300 years, they will die. Also some will go mad by counting in their heads constantly. At the very best of times it will be a very dull existence
I've already done that vault.
It's funny that I should be correcting somebody for doing the same mistake I did in the past when I first made a topic..