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BULK STORAGE CONTAISRS <br /> ATMOSPHERIC AND LOW PRESSURE LIQUID STORAGE TANKS <br /> 1 <br /> CONTAINER SHAPE DESCRIPTION CONTENTS <br /> ' CONE ROOF TANK •TANK WITH VERTICAL CYLINDRICAL WALLS SUP. •STORES FLAMMABLE, COMBUSTI- <br /> PORTING A FIXED, INVERTED CONE ROOF. BLE AND CORROSIVE LIQUIDS. <br /> •OPERATES AT ATMOSPHERIC PRESSURE. <br /> •MAY HAVE INSULATION, PARTICULARLY FOR <br /> HEAVY FUEL OIL AND ASPHALT SERVICE. <br /> •IF CONSTRUCTED TO API 650 SPECIFICATIONS, <br /> ROOF-TO-SHELL SEAM DESIGNED TO FAIL IN <br /> CASE OF FIRE OR EXPLOSION. <br /> ' OPEN FLOATING ROOF TANK •WINO GIRDER AROUND TOP OF TANK SHELL. •STORES FLAMMABLE AND COM- <br /> LADDER ON ROOF. BUSTIBLE LIQUIDS. <br /> •ROOF ACTUALLY FLOATS ON LIQUID SURFACE. <br /> OPEN FLOATING ROOF TANK •OPEN FLOATING ROOF WITH LIGHTWEIGHT •STORES FLAMMABLE LIQUIDS. <br /> WITH GEODESIC DOME ALUMINUM GEODESIC DOME. <br /> COVERED FLOATING •ALSO REFERRED TO AS AN INTERNAL FLOATING •STORES FLAMMABLE AND COM- <br /> ROOF TANK ROOF. BUSTIBLE LIQUIDS. <br /> •CONE ROOF TANK WITH AN INTERNAL <br /> FLOATING ROOF. <br /> •LARGE VENTS FOUND AT THE TOP OF THE TANK <br /> SHELL. <br /> HORIZONTAL TANKS •HORIZONTAL,CYLINDRICAL TANK SITTING ON •STORES FLAMMABLE AND COM- <br /> LEGS, BLOCKS, ETC. BUSTIBLE LIQUIDS,CORROSIVES, <br /> •STRUCTURAL INTEGRITY OF THE SUPPORTS IS POISONS, ETC. <br /> CRITICAL. <br /> •OLDER TANKS HAVE BOLTED CONSTRUCTION: <br /> TANKS SINCE 19505 GENERALLY ARE WELDED. <br /> DOME •TANK WITH VERTICAL CYLINDRICAL WALLS SUP- •STORES FLAMMABLE AND COM- <br /> ROOF c3 PORTING A FIXED DOME-SHAPED ROOF. BUSTIBLE LIQUIDS. FERTILIZERS, <br /> •OPERATING PRESSURE OF 2.5 TO 15 psi. CHEMICAL SOLVENTS, ETC. <br /> TANKS •ROOF WILL NOT ALWAYS FAIL AS DESIGNED. <br /> UNDERGROUND •HORIZONTAL TANK CONSTRUCTED OF STEEL, •PRIMARILY STORES PETROLEUM <br /> STORAGE TANK FIBERGLASS,OR STEEL WITH FIBERGLASS PRODUCTS. <br /> COATING. <br /> •ANY TANK WITH GREATER THAN 10% SURFACE <br /> AREA UNDERGROUND IS CONSIDERED AN <br /> 4 y` :'I, %:'e'er%•_ 'Xi.'�3 �� UNDERGROUND TANK. <br /> L.�. <br /> y4._ 1, •:,�� .'•`� •VISIBLE CLUES ARE VENTS, FILL POINTS <br /> • +• '? AND POTENTIAL OCCUPANCY/LOCATIONS(E.G. <br /> moi' i �,• SERVICE STATION, FLEET MAINTENANCE). <br /> v y` <br /> FIGURE 6-3 <br /> 65 <br />