§ 27-828 Fuel oil storage equipment.
AC § 27-828
(a)General requirements for fuel oil tanks. All tanks shall be designed and installed in accordance with the provisions for steel work in subchapter ten of this chapter or in accordance with the provisions of this subchapter.
(1)All fuel oil storage tanks shall be built of steel plates or sheets, made by the open hearth or basic oxygen process. Such steel shall be free from physical imperfections, and shall be new, in good condition, and free from rust.
(2)Tanks shall be welded, riveted and caulked, or riveted and welded. Flanges or other pipe connections may be welded. All caulking shall be placed with round nose tools and without damage to the plates. Filler of any kind between plates shall be prohibited.
(3)Tanks to be buried shall be cleaned and then coated on the outside with two coats of red lead, or equivalent. They shall be further protected by a coating of hot tar, asphalt, or equivalent rust resistive material, applied at the work site. Tanks installed inside buildings above ground shall be coated with one coat of red lead, or equivalent.
(4)All buried storage tanks shall be constructed of at least one-quarter inch thick metal and shall be designed to withstand any external loads to which the tank may be subjected.
(5)At the time of installation all storage tanks shall bear a permanently-fixed plate, spot welded or equivalent, bearing the name of the tank manufacturer, the gauge of the material, and capacity of the tank. Shop fabricated storage tanks shall be installed without structural alteration.
(6)All openings shall be through the top of the storage tank, except that storage tanks of two hundred seventy-five gallon capacity or less, located above ground but below the lowest story, may be provided with a three-quarter inch opening for gravity discharge and a one inch opening in the bottom for cleaning and protection against corrosion.
(7)Tanks for no. 1, no. 2, no. 3 and no. 4 commercial grade oils need not have manholes. However, if manholes are used for such oils, the manhole covers shall be bolted and made gastight. Tanks for no. 5 and no. 6 commercial grade oils shall have manhole covers bolted or otherwise secured to the tanks and kept hydrostatically tight at all times.
(8)Tanks outside of buildings shall be electrically grounded in accordance with the requirements for equipment grounding of the electrical code of the city of New York.
(9)Tanks shall be located at least seven feet, measured in the most direct manner, from any source of exposed flame unless protected as provided in paragraph two or three of subdivision (a) of section 27-829 of this article and at least two feet from any surface where the temperature exceeds one hundred sixty-five degrees Fahrenheit.
(b)Construction requirements, cylindrical tanks, except vertical tanks above ground outside of buildings, more than two hundred seventy-five gallon capacity.
(c)Rectangular tanks, of more than two hundred seventy-five gallon capacity.
(d)All tanks except vertical tanks above ground, two hundred seventy-five gallon or less capacity.
(e)Vertical storage tanks over one thousand gallon capacity located outside of building above ground.
(f)Storage containers of six gallons or less.
