A Bureau of Fire Prevention in the City Fire Department is hereby established. The Bureau shall be operated under the supervision of the Fire Chief, under the direction and control of the Director of Public Safety. Appointments to the Bureau shall be of such time and duration as determined by the Fire Chief.
   The Fire Chief shall designate an officer or firefighter of the Fire Department as Inspector for the Bureau of Fire Prevention and shall designate such other officers and firefighters of the Department, as he or she may from time to time deem necessary, as assistant inspectors for duties incident to the operation of the Bureau.