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fl <br /> TECHNOLOGY FOR TANKS Qualification <br /> . <br /> AND THEIR ENVIRONMENT ��"" <br /> Procedure <br /> S.O.# CUS i e // FaVJil` <br /> 1. If the tank product level is less than 60% or more than 9M of tank <br /> capacity,. Do not test without specific instructions from Houston <br /> Quality Control. <br /> 11. Safety check for tank bottom pressure diferential. <br /> 1 Enter tank diameter (A) in. <br /> 2. Enter Tank Top to Surface Distance ( ) in. <br /> 3. Calculate tank bottom to surface (A+B) - (C) / In. <br /> 4. Enter water table distance from surface (D) In. <br /> 5. Subtract water table (D) from tank bottom (C) <br /> to obtain (E) in. <br /> 6. Calculate water head pressure at tank bottom <br /> (E) x 0. psi - (F) psi. <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 fnr fiberglasstanks). <br /> ( + 1.2 - (G) or (F) • 0.5 - (G) <br /> Total diferential equals (G) PSI <br /> If total diferenti . (G) c 4. si DO NOT TEST <br /> it special Instructions from stn Quality <br /> Control. <br /> Surface <br /> D <br /> C <br /> Top of water table <br /> A <br /> E <br /> PE I <br /> TA -24 <br /> K-24 TANKNOLOGY CORPORATION INTERNATIONAL <br /> 5225 Hollister St.•Houston,Texas 77040.6294•(713)690-8265•1 (800)888-8563•Fax:(713)690-2255 <br />