All liquefied petroleum installations within the city, upon completion, shall be inspected by the Plumbing Inspector or by the Gas Inspector, if the Gas Inspector is appointed, and shall not be used by the occupants until approved by the inspector as complying with the section above and the rules and regulations adopted thereby.  Permits and fees for liquefied petroleum gas installations shall be governed by § 4-44.
(`90 Code, § 4-25)