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(3) Shell (wall , tcp bcttc:-,,, or head) thickne..s and <br /> corrosion allowa,-ce , if an-J . <br /> (4) Pressure rating, if, an'.. <br /> (5) StructuralSl::_Cr�S (lpo5 , Sc~�1e5 , rein orc=ent, <br /> . etc. ) . <br /> b. Construction materials (include specific grade of material , <br /> if applicable) . <br /> c. Lining mcterials , if ar. . <br /> d. Corrosion or erosion resistance to the wastes stored and <br /> to external enviro=,ental effects. <br /> e. Design specifications for the foundation of the tank <br /> including any sub-foundation word:, such as soil coc.pacticn, <br /> piles , etc. <br /> f.. Other pertinent characteristics , such as the date the <br /> tank went into service and its expected life. <br /> 3. Diagram for each tank: <br /> a . Piping (kith identification coding, if used) . <br /> b. Instrumentation (sho all interlock s stems , if used, <br /> and whether valves fail open or fail closed) . <br /> c. Process flow. <br /> 4. Describe for each tank: <br /> a . Feed systems. <br /> b. Waste feed cutoff system. <br /> c. Bypass system. <br /> d. Pressure controls (e.g. , vents , etc. ) . <br /> e. Other features , such as , . dip tubes , siphon-prevention, <br /> excess-flow check valves , failure position of valves , <br /> electrical grounding, etc. <br /> 5 . Describe: <br /> a. Type(s) of waste to be stored or treated in each tank. <br /> b. Specific gravity of each waste to be stored in each <br /> tank. <br /> I .A. I .b -54- <br />