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Unless otherwise specified in the building provisions of this Code, oils, paints, varnishes and similar fluids having a flashpoint above 200 degrees Fahrenheit, according to the standard tests for flashpoint, shall, if stored in any building used for other purposes, in quantities exceeding ten barrels aggregate, be placed in approved metal tanks, and shall be drawn only by the use of approved pumps or other approved devices. Quantities less than ten barrels aggregate may be stored in barrels, or ordinary tanks, and if drawn on the premises, suitable drip pans shall be provided to catch the drips. Boxes of sawdust shall not be used for the purpose. The premises surrounding such tanks shall be kept clean at all times. Any absorbents used to clean flammable liquid spills shall be approved by a nationally recognized testing laboratory.
(Prior code § 129.1-34)
Closed containers stored outside in the open shall be of a type meeting the regulations of the Interstate Commerce Commission or Department of Transportation or as herein required. No more than 40 drums (55 gallon capacity per drum) of Class I flammable liquids shall be stored per pile and the pile shall be located at least 40 feet from the nearest building; except that the pile can be located ten feet from the nearest building located on the same premises and under the same management. No more than 80 drums (55 gallon capacity per drum) of Class II flammable liquids shall be stored per pile and the pile shall be located at least 30 feet from the nearest building; except that, the pile can be located ten feet from the nearest building located on the same premises and under the same management. Provided, however, where closed container drum storage on the premises is for resale only with no use other than repackaging the maximum amount of Class I flammable liquids stored per pile may be not more than 120 drums and not more than 160 drums for Class II flammable liquids. A minimum distance of five feet shall be maintained between all piles of Class I and/or Class II flammable liquids. There shall be a 12-foot wide access road within 200 feet of each container. If equipped with a deluge- type sprinkler system, the size of the piles can be doubled and all safety clearances reduced by one half. All storage shall be located so that runoff due to leakage is not toward any structure.
(Prior code § 129.1-35)
ARTICLE IV. PIPING, VALVES AND FITTINGS (15-24-440 et seq.)
Where the working pressure is less than 100 pounds, all pipe used in systems for transferring and venting of flammable liquids shall be of the standard full weight, ANSI Schedule ten wrought iron, steel, stainless steel, brass type pipe, Type K copper tube or copper pipe. All pipe shall be connected with standard malleable fittings or welded. Copper tubing shall be connected with flare joints or sweat fittings employing solder having a melting point of 1,000 degrees Fahrenheit or more. Where the working pressure is in the excess of 100 pounds per square inch, extra heavy wrought steel pipe (ASTM Schedule 80) and fittings shall be used. All aboveground piping shall be rigidly supported. Swing joints shall be made with butt or close nipples. Cast iron fittings shall not be permitted. Underwriters' Laboratories, Inc. listed expansion joints or flexible underground pipe connectors not exceeding 24 inches in length shall be permitted. No flexible underground pipe connector shall be connected to any impact check valve or within five feet of any remote pumping dispenser.
(Prior code § 129.1-36; Amend Coun. J. 2-7-96, p. 15463)
Test for Pipe. All standard full weight wrought iron, steel, stainless steel, brass type pipe, Type K copper tube or copper pipe and fittings shall be tested hydrostatically utilizing water or air tested when installed to 100 psi. Extra heavy wrought steel pipe (ASTM Schedule 80) and fittings shall be tested hydrostatically utilizing water or air tested when installed to one and one-half times its maximum working pressure. The air test shall be held for ten minutes without any loss of pressure. Suction lines may be tested under a vacuum of not less than 20 inches of mercury. Underground and enclosed tank vent pipes may be tested with said tank equal to tank pressure, and not less than five psi.
(Prior code § 129.1-37)
Valves in Drawing-Off Pipes. All drawing-off pipes terminating inside of any building, shall have an automatically closing type shutoff valve or dead-man switch to control pump and an emergency valve at the point of discharge.
Valves for Aboveground Tanks Below Liquid Level. All aboveground tanks shall have a valve in the discharge pipe leading from such tank which shall be located within two feet of the tank, with no branches or outlets between the tank and valve. All inlet pipes shall have a tank valve and shall have a check valve immediately adjacent to the tank valve. Where a pair of valves are used in a pipe line aboveground, a relief valve or a relief bypass valve shall be provided in each line and discharge into the top of the tank or a properly installed underground tank. Relief valves shall be of sufficient size to prevent excessive pressure in the pipe line and in no case shall the relief valve be set at a higher pressure than the maximum working pressure of the pipe. Pipes leading into or out of a diked area shall have an additional valve within ten feet of the dike, except no valves will be required in aboveground pipe lines when such pipes are used for conserving vapor losses and piped to an expanding roof tank.
All valves shall have identification tags, stating the use of the valve and the material that is conveyed. Tags shall be of the stamped metal type and not less than one-fourth-inch lettering used. Tags shall be permanently fixed to the valve. All piping shall be labeled stating material conveyed or flammable liquid and its class. The direction of the normal flow shall be clearly shown.
Pipe Drain to Tanks. Where underground tanks are used, vent, fill, and suction lines shall pitch toward the tank without traps or pockets. Suction piping entering a building from an underground tank, shall be equipped with an approved antisyphon device when said pipe is installed below, or may fall below the highest level of the tank.
Pipes in Rooms Containing Open Flames. Pipes conveying Class I or II flammable liquid, shall not extend into or pass through any room which contains open light or fire, unless said pipes are of standard full weight wrought iron, steel or extra heavy wrought steel pipe (ASTM Schedule 80) are without threaded joints or connection.
(Prior code § 129.1-40)
Pumps delivering to or taking supply from an aboveground tank shall be provided with valves on both suction and discharge side of pumps. When a positive displacement pump is used, a relief valve of sufficient size shall be provided at the discharge side. The discharge of the relief valve shall be piped the same size as the relief valve to the suction size of the pump or return to the supply tank. Integral relief valves may be produced. Flammable liquid discharged by means of a centrifugal pump into an aboveground storage tank, shall be provided with a check valve immediately adjacent to the tank valve.
Any flammable liquid heater or pipe incorporating a heater shall be provided with a relief valve of sufficient size and so arranged to discharge to the supply tank, when any valve, pump, or other device will prevent the release of excessive pressure.
(Prior code § 129.1-41)
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