The image below is a schematic flow diagram of a typical oil refinery that depicts the various unit processes and the flow of intermediate product streams that occurs between the inlet crude oil feedstock and the final end products.
In order to check-in into a hotel, the person must be 21 years old.  If the person is younger than 21, then a parent or guardian can  give permission for them to check-in. 1 person found this useful.
Hotel Age Policy Not Always What Itâs Posted. Those walking into a hotel with a 21 age limit might test the policy. Hotels might be willing to rent to 19- and 20-year olds if you have the identification and driverâs license.he age is often 17 in Canada. With locally-owned hotels, the age of motel rental is often left to the discretion of the hotel owners or the staff on hand when you ask to rent a room. As big of an issue as age is whether you have a credit card to rent the room with.