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Qualification <br />Procedure <br />S.O.# CUST. FacHity#_22LO <br />1. If the tank product level Is less than 60% or • _ i i of <br />capacity,. Do not test without specific Instructions from Houston <br />Quality Control. <br />diameter11. Safety check for tank bottom pressure diferential. <br />1 Enter tank <br />1 2. Enter Tank • • to Surface Distance <br />3. Calculate tank bottom • B <br />4. Enter water table distance from surface (D) \9il &&CV. In. <br />5. Subtract tablefrom bottom (C) \,1,Jekk VA5, 37T <br />•6 • • <br />t.Calculate water head pressure at tankbottom <br />•: • �•11 - W•ti. <br />7. To obtain tank bottom pressure differential (G), ADD water head <br />pressure (F) and the probe set point (1.2 for steel or 0.5 for fiberglass tanks). <br />or • <br />• dtferentialequals pal <br />totalIf diferential (G) exceeds 41`i psi i • NOT <br />without•-cial instructions from HoustonQuality <br />Control. <br />EMEMEME, <br />°^� E 1 TANKNOLOGY CORPORATION INTERNATIONAL <br />TAK 24 5225 Hollister St. • Hrniston. Texas 77040-6294 9 (713) 690-8265 • 1 (R00) R88-8563 • Fax: (713) 690-2255 <br />