(A) All gas piping, equipment and appliances for the conveyance and use of natural or artificial gas shall be installed to conform with generally accepted good practice. The standards for “Installation of Gas Piping and Gas Appliances in Buildings” as adopted and amended from time to time by the American Gas Association, while not exclusive, shall be deemed to be generally accepted good practice.
(B) It shall be unlawful to turn gas into or use any gas piping, equipment or appliance until the same has been inspected and approved by the City Clerk, as provided in this chapter.
(C) Rubber hose connections or fittings arranged for rubber hose connections for gas heaters or similar appliances shall not be permitted.
(D) Concealed gas fuel piping must not have any plugged openings except for such gas fuel appliances as will be installed. All plugged openings in concealed piping must be exposed. Concealed unions, standard weight steel couplings, gas cocks, valves or bushings will not be permitted. Concealed dresser-type couplings will not be permitted inside buildings.
(E) All gas-consuming appliances installed shall be equipped with an effective draft diverter, shall be properly vented to a suitable flue, and shall be inspected to determine that all products of combustion are vented to atmosphere, except that AGA-approved gas ranges need not be vented. AGA-approved gas refrigerators, gas mangles and other appliances, the consumption of which is less than 5,000 Btu per hour, need not have draft diverters or be vented to flues.
(F) Piping shall be of a size and so installed as to provide a supply of gas sufficient to meet the maximum demand of all appliances served by that piping without undue loss of pressure between the meter and the appliance or appliances.
(G) All piping, equipment and appliances shall be tested for tightness before being used, either by a meter “turn-on” test or an “air pressure” test, as follows.
(1) Meter “turn-on” test: all gas outlets shall be closed and gas shall be turned into the system and the hand on the test dial of the meter carefully watched to ascertain that no gas is passing through the meter. This test shall be applied for a reasonable length of time, but in no case for less than 15 minutes.
(2) Air pressure test: air pressure of not less than three pounds per square inch above the atmospheric pressure shall be applied to the system for a period of not less than ten minutes, in case of concealed piping, the air pressure test must be used, with pressure at not less than six pounds per square inch above atmospheric pressure.
(3) All testing apparatus shall be furnished by the installer. Piping shall be completely roughed in and ready for testing prior to the time an inspection is requested.
(H) Standard full weight wrought iron or steel pipe, free from defects, shall be used in conveying gas from meter to appliances, except that approved seamless, well annealed, nonferrous tubing with approved fittings may be used for permanent connections of small stationary appliances such as radiant fires installed in fireplaces and the like. All fittings for wrought iron or steel pipe (except stop cocks or valves) shall be of best quality malleable iron. Threads shall be in accordance with the American Pipe Thread Standard.
(Ord. 85, passed 12-13-1961) Penalty, see § 53.99