(a) New Or Replacement Installation:
(1) Underground flammable liquid storage tanks shall be installed and tested in accordance with the National Fire Protection Association flammable and combustible liquids code no. 30-1969, chapter 2, tank storage and chapter 7, service stations and in accordance with the recommended practice of NFPA no. 329-1965 as amended. Installations incorporating submersible pumps shall be equipped with a pump actuated leak detector.
(2) Before the installation of any tank intended for the use of storage of flammable liquids is covered from sight, the director of building and zoning shall inspect the installation and give approval if the requirements of this and other applicable provisions of the code have been observed. The installer, in the presence of the director of building and zoning or his authorized representative, shall subject the tank and its piping to a leak test in accordance with NFPA no. 30-1969, section 26 as amended. The test shall be conducted after the tank has been set in place and all piping has been permanently connected, but before the tank or piping are covered. The test shall be run with air pressure if the water table permits. When air tested, all joints shall be examined for leakage with a soap solution or equivalent. Approval of the installation shall not be given unless there shall be no leakage detected and there shall be no drop in indicated gauge pressure in thirty (30) minutes. Hydrostatic leak testing may be conducted with the product.
(b) Tanks In Service:
(1) Accurate inventory control records shall be maintained by the licensee for each underground tank in accordance with NFPA no. 30-1969, chapter 7, paragraph 7017 and NFPA no. 329-1965, chapter 2 as amended. The licensee shall promptly report abnormal loss of stock to the director of building and zoning. He shall make his stock control records available for checking by the director of building and zoning.
(2) Retesting of the installed system shall be conducted in accordance with NFPA no. 329-1965, chapter 3 as amended. When testing is required, such tests shall be made by a person, firm or corporation qualified to test such underground flammable storage systems and shall be conducted in the presence of the director of building and zoning or his authorized representative. The cost of such tests shall be paid by the licensee.
(3) The director of building and zoning may require retesting at any time when it is suspected that an underground tank or its connected piping may be leaking or when stock control records indicate an abnormal loss.
(4) Periodic retesting may be required after the tenth year of installation and every fifth year thereafter unless performed more frequently for cause.
(5) Station owners shall conduct periodic (at least monthly) tests for the presence of water in submerged steel tanks in accordance with NFPA 329-1965, chapter 2 as amended. (1963 Code § 17.1105; amd. Ord. 0-70-10)