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TIN 5 <br /> CADMIUM 5 <br /> TITANIUM 5 <br /> VANADIUM 5 <br /> SILICON 100 <br /> SODIUM 100 <br /> POTASSIUM 50 <br /> MOLYBDENUM 5 <br /> LITHIUM 5 <br /> MAGNESIUM 100 <br /> BARIUM 100 <br /> PHOSPHORUS 1000 <br /> ZINC 200 <br /> REACTIVITY: NON-CORROSIVE, WASTER OIL AND STEEL ARE NOT REACTIVE. <br /> OBSERVATIONS <br /> OUTSIDE CONDITIONS: NO LEAKS OR CORROSION FROM THE OUTSIDE. <br /> EXTERIOR PAINT IS INTACT. <br /> INSIDE CONDITIONS: NO LEAKS OR CORROSION FROM THE INSIDE. <br /> SECONDARY CONTAINMENT CAVITY: CLEAN BARE STEEL WITH SLIGHT SURFACE RUST, NO <br /> SIGNS OF OIL OR WATER. <br /> CONTAINMENT CAPACITY: 998gal (197%OF LARGEST TANK) <br /> CONTAINMENT CONDITIONS: VERY GOOD <br /> INTEGRITY CONFIRMATION <br /> The wall thickness is not measurable due to complete welding of the joints. The condition of the bottom <br /> of the tank is not directly observable due to lack of access and waste oil at the bottom. A proof test is <br /> required to illustrate sufficient metal strength to confine the static fluid pressure head the tank may be <br /> subjected to. The tank is 6' deep and used oil has a specific gravity of 0.86 for static pressure of 2.24psi. <br /> A pressure test of 5psi is sufficient to illustrate a factor of safety of 2 against rupture. <br /> PROCEDURE: 1). REMOVE VENTED ACCESSORIES AND PLUG BUNGS. <br /> 2). LEAVE COLLECTION PIPING ATTACHED FOR TESTING. <br /> 3).ATTACH GAS TEST BLOCK w/ 15psi GAGE&SCHRADER AIR FILL VALVE. <br /> 4). APPLY 5psi AIR PRESSURE AND TEST FOR LEAKS WITH SOAPY WATER. <br /> 5). FIX LEAKS AND REAPPLY 5psi PRESSURE. <br /> 6).ALLOW TANK 15min TO ACCLIMATE TO PRESSURE. <br /> 7). RECORD PRESSURE AND TEMPERATURE FOR ONE HOUR. <br /> 8). CONFIRM THAT ANY OBSERVABLE PRESSURE CHANGES CORRELATED TO <br /> TEMPERATURE CHANGES. <br /> Page 4 of 6 <br />