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Union pacific waste Oil Tank Assessment, 10,000 galwii tank (2009) <br />Strandberg Associates 1(866) 388-0404 (650) 329-8918 rwaterquy(d�rwaterquy.com <br />Union Pacific <br />TNKO - 0295 <br />UTG Thickness <br />East <br />Side <br />East Side <br />Bottom <br />North <br />Side <br />South <br />Side <br />South Side <br />Bottom <br />reading # <br />mm <br />mm <br />mm <br />mm <br />mm <br />1 <br />2.7 <br />5.8 <br />5.4 <br />6 <br />5.3 <br />2 <br />6 <br />5.8 <br />5.8 <br />6 <br />5.7 <br />3 <br />5.9 <br />6.2 <br />6.2 <br />6.2 <br />5.6 <br />4 <br />5.6 <br />3 <br />6 <br />5.5 <br />5.5 <br />5 <br />5.6 <br />5.8 <br />5.8 <br />5.6 <br />5.5 <br />6 <br />3.2 <br />5.6 <br />5.5 <br />5.6 <br />5.5 <br />7 <br />5.6 <br />5.6 <br />5.8 <br />5.7 <br />5.3 <br />8 <br />5.7 <br />4.6 <br />6.4 <br />5.8 <br />5.4 <br />9 <br />5.9 <br />5.8 <br />6.1 <br />5.9 <br />5.3 <br />10 <br />5.3 <br />5.6 <br />6.1 <br />5.5 <br />5.3 <br />11 <br />6.2 <br />5.8 <br />6.1 <br />6 <br />5.3 <br />12 <br />6 <br />6 <br />5.6 <br />6.1 <br />5.6 <br />13 <br />6 <br />5.6 <br />6.1 <br />6 <br />5.5 <br />14 <br />4.2 <br />5.5 <br />6.1 <br />6.1 <br />5.5 <br />15 <br />6.1 <br />6.3 <br />6.2 <br />5.9 <br />5.5 <br />16 <br />6 <br />5.8 <br />6.3 <br />6 <br />17 <br />2.9 <br />5.5 <br />6.1 <br />6 <br />18 <br />3.6 <br />5.3 <br />6 <br />6 <br />19 <br />3.5 <br />5.7 <br />6.4 <br />5.7 <br />20 <br />5.8 <br />5.6 <br />5.8 <br />5.8 <br />21 <br />5.6 <br />5.5 <br />6 <br />6 <br />22 <br />5.3 <br />5.3 <br />23 <br />5.3 <br />5.3 <br />24 <br />2.7 <br />25 <br />4.6 <br />average, mm <br />5.114286 <br />5.372 <br />5.9304348 <br />5.8761905 <br />5.453333333 <br />std deviation <br />1.192596 <br />0.852212806 <br />0.3267398 <br />0.2047065 <br />0.130201309 <br />3 sigma, max pit dep h, mm <br />3.577789 <br />2.556638418 <br />0.9802194 <br />0.6141196 <br />0.390603928 <br />minimum shell thickn ss, API <br />650, mm, small tank <br />0.6604 <br />0.6604 <br />0.6604 <br />0.6604 <br />0.6604 <br />corrosion allowance, m <br />3.653886 <br />3.9116 <br />4.4700348 <br />4.4157905 <br />3.992933333 <br />minimum allowable s ell thicknes <br />a pit, mm <br />0.3302 <br />0.3302 <br />0.3302 <br />0.3302 <br />0.3302 <br />corrosion allowance a pit, mm <br />1.206297 <br />2.485161582 <br />4.6200154 <br />4.9318709 <br />4.732529405 <br />gage, standard rolled teel sheet <br />psf <br />in <br />mm <br />3 <br />10 <br />0.24435539 <br />6.2066269 <br />4 <br />9.375 <br />0.229083179 <br />5.8187127 <br />5 <br />8.75 <br />0.213810967 <br />5.4307986 <br />6 <br />8.28 <br />0.202326263 <br />5.1390871 <br />71 <br />6.732 1 <br />0.164500049 <br />14.17830121 <br />Thickness paint, mm fective <br />0.8 <br />0.8 <br />0.8 <br />0.8 <br />0.8 <br />avg thickness w.o. pai t <br />4.314286 <br />4.572 <br />5.1304348 <br />5.0761905 <br />4.653333333 <br />estimated original plato thickness <br />5.139087 <br />5.139087088 <br />5.1390871 <br />5.1390871 <br />5.139087088 <br />number of years, <br />15 <br />15 <br />15 <br />15 <br />15 <br />average corrosion rate, <br />mm/yr <br />0.054987 <br />0.037805806 <br />0.0005768 <br />0.0041931 <br />0.032383584 <br />life expectancy at plat <br />, yrs <br />66.45028 <br />103.4655897 <br />7749.4398 <br />1053.1069 <br />123.301157 <br />corrosion rate at pit., <br />m/yr <br />0.238519 <br />0.170442561 <br />0.065348 <br />0.0409413 <br />0.026040262 <br />life expectancy at pit, <br />ears <br />5.057441 <br />14.58063975 <br />70.698695 <br />120.46198 <br />181.7389329 <br />Strandberg Associates 1(866) 388-0404 (650) 329-8918 rwaterquy(d�rwaterquy.com <br />